I think the "problem" with "cursors" is that there's sorta only one place where you're supposed to be changing things.

This works great if it's a single user application and there are no timers / no incoming data sources / no other updates.

However, if you have timers / othter channels also sending updates to your app, something like reagent (with reactive atoms) may work better than Om (with a single data store + cursors)

in cljs, is there a way to throw/catch arbitrary cljs data structure, rather than a (js/Error) ?

@hwk (throw (ex-info msg {:thing "data"})) and get it via (catch :default e (something (ex-data e)))

Hi. Is there 1-level version of clj->js?

Is it possible to configure the figwheel server to catch-all routes?

@danielcompton you probably need to setup custom ring handler

wrong person, but ok, I'll look into this

oops, sorry

thanks for the pointer

Trying this as a simple handler but doesn't work:

(defn handler [request]
  (io/resource "public/index.html"))

@danielstockton what the error is?

Just get a 404 on any other route "Figwheel Server: Resource not found"

ok, you might need "routes"

Perhaps it isn't picking up the handler for some reason

you (println ...) to figure this out

or even (throw ...)

Don't routes dispatch on something in the request? A simple handler shouldn't need routes.

uhm, not sure

But am I getting right, you actually have added :figwheel {:ring-handler foo.core/handler} to project.clj?

I mean :ring-handler to :figwheel section

Yep

Oh, damn 🙂 Not exactly

foor.core.handler...typo

yes, and make sure there ain't like two :figwheel inclusions

and everything's in place

Got it working, thanks a lot

👍

Not with io/resource, but with

(ns dev
  (:require [ring.util.response :as resp]))

(defn handler [request]
  (resp/resource-response "index.html" {:root "public"}))

Needs to be a proper ring response

@thheller : thanks! (re ex-info, re-data, throwing arbitrary cljs data structures)

anybody know a good way of transpiling markdown into hiccup in cljs?

i can do it into html using something like yogthos/markdown-clj, but if the markdown is large then it's inefficient to keep rendering the html in react, it would be better to provide hiccup

With ag, how do I only search in ClojureScript files?

ag —clojure foo is too broad

@kenny You asked about what's wrong with cursors, this blog expands on it: https://circleci.com/blog/why-we-use-om-and-why-were-excited-for-om-next/

this post too: https://groups.google.com/forum/#!topic/clojurescript/7K7VcIX3qP4

@borkdude ag -G .cljs foo

ah, ag -G .clj\[sc\] foo is what I wanted then, thanks 🙂

for completeness:

alias ag-cljs='ag -G .clj\[sc\]'
alias ag-clojure='ag -G .cljc\?'

nice

@borkdude stealing that, thanks!

hi, how do I reference js/Error at compile time?

for what reason?

js/Error should only be part of the compiled output

I'm trying to catch an error in a macro that should work both for clj/cljs

but I must be doing something wrong: https://gist.github.com/spacepluk/85b07e6eabb146e78c7fc02fb091057f

@spacepluk [email protected](err-sym)

I don’t think you want splicing-unquote here

oops, that was me being desperate

~(err-sym)

yields -> No such namespace: js

@spacepluk You're using js/Error in :clj code

it's a macro

Oh, I see what you're trying to do

You want 'js/Error

I tried that as well, let me do it again

nah, same 😞

I chose a bad first macro

Heh 🙂

Oh, I see the problem!

err-sym shouldn't be a macro

It should be a function, in clj

hmm but then there's no &env

Right, but &env is wrong here anyhow

That's the clj environment, because you're calling a macro when the clj code of your other macro compiles

You'll need to pass the &env from profile into err-sym

oh, I see

(or just the :ns, if you like)

@spacepluk I myself use a little helper macro:

(defmacro cljs? []
  `(boolean (:ns ~'&env)))

I'm confused

just macroexpand it and you'll understand

the ~' is to ensure that the literal &env symbol is embedded, not the namespace qualified

it works!

but I don't completely understand why

it's the same as if you have typed (boolean (:ns &env))

why do I need the function? :?

https://gist.github.com/spacepluk/85b07e6eabb146e78c7fc02fb091057f

to save a few keystrokes 😄

hehehe, but if I make it a macro it fails

you are missing an unquote though

~'&env

Also, you can simply do

(catch (cljs?) `js/Error `Throwable ...)

really?

oh wait I messed up

(catch ~(if (cljs?) `js/Error `Throwable) ...)

OH

I got it

wow this is mind bending hehehe

feels good

just wait until you get to double syntax quotes, that's where the real fun begins 🙂

hahaha,

thanks a lot

Looking for a boot project example with working source maps

Re: the CircleCI Om Next article - the 'mutations' concept seems to lead in a direction resembling Redux's reducers, to the best of my knowledge. Is that accurate?

@fellshard not accurate

it’s based on Relay & Falcor - not Redux

No action-based dispatch, I guess that's a major difference. Will do more digging.

I mean Redux is not really innovating here that much

Flux had a variant of the command pattern - so does Redux

so does Om Next

but as far as direct inspiration - look at Relay & Falcor not Redux

anyone notice clojurescript compiler / figwheel slow down after they've been running it for a while?

the figwheel hotloading slows now and I need to kill the jvm and restart

what's the best/easiest way to import a NPM module for frontend/client-side use (and this NPM module has 4-5 other modules as dependencies). Neither it or its dependencies are currently provided by CLJSJS

[i haven't looked yet at the dependencies of those 4-5 other modules but if they each have a handful of dependencies, this could get painful fairly quickly]

The root module in question is: react-swipeable-views if anyone knows about or alternatives to this functionality in particular.

@jasonjckn haven’t encountered that myself