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re-frame 2024-02-22
lilactown 2024-02-22T17:16:51.139979Z
When an error occurs in a re-frame sub, it often crashes the app; e.g. a common one is we call (sort-by (comp str/lower-case :name) ,,,) in a sub when sometimes it occurs that :name is nil.
often the stack trace will bottom out somewhere in clojure.core or re-frame, and not point at the particular subscription function which actually caused the crash.
anyone figured out a way to capture these errors in a way that links it back to the particular subscription that failed?
lilactown 2024-02-23T17:14:41.498829Z
hmm, could be an issue with how we're using using reagent with hooks then- we have a use-reaction hook that we use with helix that uses a combo of useSubscription + run-in-reaction to replicate the behavior of derefing inside a reagent component. I'll look further into that.
p-himik 2024-02-22T23:06:01.781109Z
I see the component that ended up derefing that sub - that's pretty much always enough. Although I agree that seeing the sub itself would be more useful.
p-himik 2024-02-22T23:06:44.210729Z
Ah, hold on - I see the component in a stacktrace made by React. The original stacktrace does show the exact location.
p-himik 2024-02-22T23:07:46.960359Z
Clicking on the link navigates me to the exact line where I put a throw. And I haven't made any special setup to make it work.
p-himik 2024-02-22T23:09:36.592949Z
Just tried with a sub that gets used only as a signal - same result, everything's perfectly clear.