Clojurians Log v2

We have inherited this old angularjs 1.x project served by ASP .NET framework, I’m not sure where to start on how converting this app and introduce clojurescript to this. Full rewrite does not seem an option, what would you do ? I’m a newbie to cljs

In all honesty, I'd sit back and consider if adding clojurescript is a good idea.

Right, that’s what I’m also thinking :white_frowning_face:. I’ve never pushed cljs in production, I’ve never developed on windows (.net framework only runs on windows). I don’t know how’s the cljs tooling in that OS

> net framework only runs on windows Not entirely true, given the Mono project. .NET landing page explicitly talks about being able to run your apps on macOS and "Supported on Linux, Windows, and macOS" if you scroll down.

@vnctaing is there a support from the customer/sponsor to switch technologies?

Hey all, quick question– is it possible to use (intern) with clojurescript?

I get a "use of undeclared Var intern at line..." when I try it with the cljs compiler

hmm... another question too actually: how shall I check the typeof an object in clojurescript? I want to distinguish whether I'm operating on a number or an an object (map)

(def name "Bob") (= (type name) js/String) ;; => true (string? name) ;; => true (not= (type name) js/Number) ;; => true (not (number? name)) ;; => true

https://kanaka.github.io/clojurescript/web/synonym.html

@nickt

you should be able to use (type thing)

Can someone point me to a good project to use as a starting point for embedding a REPL in a browser, which can invoke third party code (ex: com.library/whatever)? I have been playing around with this, but it’s a bit difficult for me to understand how to expose “new” API calls that invoke the libraries: https://github.com/timothypratley/power-turtle

I notice that, even when I specify :output-to and :output-dir to somewhere other that target/, CLJS compilation still makes files in target/ . Is there a way I can change that? I'm trying to run two separate compilations at once and they're both clobbering target/, when I configured them to output somewhere else entirely.

:output-to and output-dir are the way to change that. The clojurescript webpack guide uses out rather than target and it works. How are you building your clojurescript files?

No, there is no such thing as a var at runtime in CLJS

Is there a ClojureScript compiler option to have output .js files mirror the file/directory structure of the source .cljs files?

e.g.

src/foo/core.cljs
........util.cljs
....bar/main/core.cljs
.............foo2.cljs

out/foo/core.js
........util.js
....bar/main/core.js
.............foo2.js

I would love anyone's input on https://stackoverflow.com/q/64036018/59439

does this not exist in cljs? https://clojuredocs.org/clojure.core/intern

any other way to dynamically "def" a var ?

> I have both the cognitect.transit-clj and cognitect.transit-cljs dependencies because my project is Clojure on the backend and CLJS on the frontend. This is a really bad idea, causes all sorts of problems. This may be one of them, not sure.

You should have separate sets of dependencies for each, don't try to share them

No: https://clojurescript.org/about/differences#_vars_and_the_global_environment

(From the ClojureScript article on "Differences from Clojure")

somehow i find that hard to believe. you can do a lot of "dynamic" things in "dynamic" languages (and both cljs and the host language are "dynamic"). it's only a matter of finding out how.

Well you can just do (aset js/window "foo" "something"), of course. But if you really mean var, and you don't trust the official docs, I don't think I can help you

@isak, thanks so much! I will look into how to split them up.

👍 thanks!

Ah, that is on my do list! I am thinking easier to start with a good JS data grid such as agGrid. Did you check out https://github.com/Kah0ona/re-datagrid?

thank you, I will have a try.

that doesn't matter at all, just keep both

@thheller, Thank you for your SO answer. That fixed it!