2024-08-22 sci | Clojure Slack Archive

sci

hoppy 2024-08-22T14:45:53.578049Z

have a cljs (node) app that invokes some non-trivial sci code, which in turn ends up calling out to (cljs) fns that were bound in the environment: A: app(nodejs) -> B: big-fuzzy-ball-of-sci-code (sci) -> C: app(nodejs) Something in C throws exception, which in turn bubbles up to A, leaving me wondering if there is any straightforward/kosher way of introspecting what the call-stack in B was at the time - obviously looking for the call stack in terms of the code being interpreted rather then SCI itself. any clean / kosher way to do such a thing?

borkdude 2024-08-22T18:32:35.885879Z

the SCI exception contains information that can be turned into a stack trace

borkdude 2024-08-22T18:34:33.757699Z

Example:

$ clj -M:cljs -m cljs.main -re node
ClojureScript 1.11.54
cljs.user=> (require '[sci.core :as sci])
nil
cljs.user=> (try (sci/eval-string "(assoc :a 1 2)") (catch js/Error e (->> (sci/stacktrace e) sci/format-stacktrace (run! println))))
clojure.core/assoc - <built-in>
user               - <expr>:1:1
nil

hoppy 2024-08-22T18:45:11.207279Z

was seeing that when the source was sci code, but not when in node code it called into. Also bothered to look and updated from 0.8.40 to 0.8.43 and seems different (better). I was previously looking at (ex-data) and was getting back nil when it was a JS execption (like IndexError), but this looks better. I think you exposed sci/stacktrace recently, no?

borkdude 2024-08-22T18:46:45.566009Z

not sure when that was exposed, but it's been a while

hoppy 2024-08-22T18:48:12.706459Z

btw, If I haven't said it to you before, thanks a ton for SCI and offspring. We use the hell out of it, and it's flying around doing its job in airplanes.

🙏 1

borkdude 2024-08-22T18:48:44.005119Z

haha amazing! hope it won't cause any airplane crashes!

hoppy 2024-08-22T18:48:54.495149Z

non flight critical systems

😅 1

hoppy 2024-08-22T18:49:34.283359Z

worst that could happen is somebody can't turn on a light, flush a toilet, or watch their apple-tv

borkdude 2024-08-22T18:49:48.367569Z

Clojurians Log v2

sci