https://github.com/binaryage/cljs-oops is probably one of the mostunderrated libs of all time

pre https://github.com/binaryage/cljs-oops I keep 6 emacs windows open {boot client, boot server, gae} * {dev, prod} so that after hcekcin things work in dev :optimizations :none, I look over at prod :optimizations :advanced

but now, there's no longer need to keep prod open with ocall/oget/oset!, so I can kill the prods most of the time

this speeds up compile time and also reduces heat generated toward global warming

What does the error "Feature should be a keyword" mean?

I've not even used a keyword in that part of the code

Probably your using a function from maybe a library which expects a keyword to get something from a map?

hi all , has anyone experianced this error or know what it indicates when using sente DEBUG [taoensso.sente:208] - Bad package: , then it outputs the map that i was trying to send , it seems like its an issue with the size of the data but im not sure

closest i found was this , http://ptaoussanis.github.io/sente/taoensso.sente.html , but it doesnt explain what it means

@urbanslug I see that in cljc files. Just put one form under :clj or :cljs or wrap it in a do

ok so the actual exception seems to be "Reader tag must be a symbol" , though that doesnt seem to explain much more

Can you share what you’re sending

If I add a depend like [cljsjs/moment "2.10.6-4"] in my project.clj is there anything special I need to make this work in my cljs code?

*cljc

With a funtion like

(defn format-date
  [date]
  #?(:cljs (if (or (js/isNaN (new js/Date date))
                   (= (new js/Date date) "Invalid Date"))
             date
             (-> date js/moment (.format "ll")))))

you just need to require the namespace as usual

moment?

hmmm it doesn't seem to be required in other places. It's used with js/moment

I think you can do a #?(:cljs (require …) )

Funny is that it's working in another piece of code that doesn't require it.

requiring it worked

thanks @xsyn

Damn typing that name is hard

It’s 4 characters ?

Err… and cool 🙂

PvNP is also only 4 chars 🙂

@urbanslug it might work from other namespaces that don't require it, it just depends on if it was required from another ns "before" the ns in question (think about the compiled js)

best bet is to require it.

with lumo (or anything else) is it possible to run *.cljs files as shell scripts under node.js?

(main concern is somehow firing up the compiler, compiling the cljs and running it) --- or straight up interpreting the cljs file

shell scripting in cljs would be amazing

@qqq yes it is already possible

@richiardiandrea : awesome ; what do I need to install to make this happen?

Lumo for Node.js 😀 or Planck, one sec I am fetching some samples from our meetup

https://github.com/paullucas/lumo-misc/blob/master/ip.cljs @qqq

In the repo you will find other examples of how we were playing around with it 😀

Yes, you can just, for example do lumo foo.cljs and it will run it. If you do lumo -h you will see that it follows the same command-line argument patterns used in the regular Clojure REPL.

I notice, in the CLJS API, there's a "special form" called let*. It doesn't have any documentation for it, though, and it doesn't seem to be in "normal" Clojure. What does it do?

@qqq this is what I did specifically for you a few days ago: https://github.com/binaryage/dirac-sample/blob/master/scripts/reveal.cljs

oh, you didn’t look? 😉

here I call it from a normal bash script: https://github.com/binaryage/dirac-sample/blob/master/scripts/reveal.sh

@darwin: I did look, which is where I got the name "lumo" from

@darwin: which then led me to believ "either @darwin is an idiot; or somehow it's magically possible to run cljs files as shell scripts with no downtime; despite cljs itself being slow"

As one might imagine, it's difficult to search the internet for let*.

For reference, here is let* in the CLJS API: http://cljs.github.io/api/cljs.core/#letSTAR And in the CLJ API, there is only let: https://clojure.github.io/clojure/clojure.core-api.html#clojure.core/let

@tech_hutch I did a search for "clojure let star" and found this: https://groups.google.com/forum/#!topic/clojure/f8iovY57J4k

Okay, thanks. So I guess it's just a low-level compiler thing, then.

It would be nice if they mentioned this in the documentation.

(trying to install lumo) is "npm install -g" supposed to require root? (newcomer to node.js)

I think it just installs for your account, so it shouldn't.

If it errors out, you could try root.

@qqq use brew if you are on a mac

or jump into another rabbit hole: https://github.com/creationix/nvm

@tech_hutch what made you look for let*?

I just happened to see it in the API.

api docs?

Yeah

http://cljs.github.io/api/

^ Linked to from the ClojureScript website

i’ll add a note to it

@tech_hutch If you do (source let) you can at least see how the let macro is built atop the let* special form.

Oh okay.

The repl at http://clojurescript.net/ doesn't seem to have source. Maybe it was added after it was created.

@qqq if you’re on a Mac you can brew install lumo

or npm install -g lumo-cljs otherwise

@darwin: just got lumo working -- it's amazing, every time I study dirac, I end up learning something new (besides the choice of lein vs boot and cursive vs emacs)

I also maintain downloadable binaries here https://github.com/anmonteiro/lumo/releases/tag/1.2.0

@anmonteiro : thanks; just got it working

I just tried (source let) at http://clojurescript.io/ and it returned nil. :thinking_face:

@tech_hutch that’s not an officially supported REPL

source is a REPL special that different REPLs need to implement

Oh.

the ClojureScript REPL that ships with the CLJS compiler will have source

I saw the source at http://cljs.github.io/api/cljs.core/let anyway.

@tech_hutch updated let* docs 🙂 http://cljs.github.io/api/cljs.core/#letSTAR

@tech_hutch answering your question, let* is an internal thing which is not meant to be used

it’s one of the special forms that the analyzer needs to parse separately

may need a refresh, but you can submit docs in the details page, click “edit here” at bottom

I saw, thanks. 🙂

just like def, loop*, ns, etc

Oh, you can submit docs? That's nice.

I added this so I could get myself to start writing more docs: http://cljs.github.io/api/#progress

color-coded by documentation progress

we’ll get there

hey folks, what are y’all doing to automate browser testing? clj-webdriver is unmaintained 😞

@robert-stuttaford https://github.com/igrishaev/etaoin looks interesting

Anyone use Lumo to make a server?

Thinking about using it to make a game server ish situation

@robert-stuttaford I had to vendor clj-webdriver in dirac for latest selenium updates, feel free to grab my patches: https://github.com/binaryage/dirac/commits/master/test/src/webdriver/clj_webdriver

@nwjsmith nice find — what did you search for to find that?

thanks @darwin! given this, would you consider clj-webdriver to still be a viable foundation to base long-lived tests on?

I think it came up here on one of the channels and I starred it on GH, not sure actually.

Starred it as well, pretty sure it was on slack 🙂

@darwin do you know if the clj-webdriver you have can be used with http://browserstack.com?

I don't

cool, thx

@robert-stuttaford I'm working on my own Webdriver implementation: https://github.com/igrishaev/etaoin Today I released a new version. Here are autodoc pages: http://grishaev.me/etaoin/ There are also unit tests as example.

In our company, we did try to use clj-webdriber but faced some troubles.

I found a large list on HN about small js libs/frameworks (https://news.ycombinator.com/item?id=13830148). A lot of them implement some kind of virtual DOM like React. I wonder if there are any attempts doing the same in plain cljs?

The only one I know of is https://github.com/brandonbloom/cljs-vdom

Cool! Seems it’s a bit abandoned though.

@tech_hutch you probably want cond

cond-> threads the first argument, so it actually becomes (let (count choices) [...])

Really? I thought it only threaded the conditions?

it doesn’t thread the conditions 🙂

so they’re also wrong

I mean, the logic is wrong, because (> 1) will always return true

Oh, I see. Thanks.

I just wanted to avoid the repetition of (count choices).

I guess I'll put the whole thing in a let.

is there a widely-used library for sanitizing human input for cljs? I haven't found anything terribly useful.