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DefaultonError for invoked actors#5195

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crishoj asked this question inIdeas
Feb 12, 2025· 1 comments· 1 reply
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I find myself repeatingonError attributes in machines with lots of invoked actors.

Would it be crazy to allow a "default"onError to be specified inStateNodeConfig?

createMachine({initial:'running',states:{running:{onError:'failed',// 👈 This is what I would like to dostates:{idle:{invoke:{src:'someService',onDone:'processing'}},processing:{invoke:{src:'someOtherService',onDone:'success'}},success:{}}},failed:{// From here we could resume to a history state}}})

Invoked actors within therunning state could use the defaultonError transition, if they don't specify their ownonError transition.

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This is a good idea. Might not really be type-safe, since it's hard to predict which invokes it's for, and ideally this can be used for any error that happens in the state.

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1 reply
@Hebilicious
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I like this idea, and I would also like foronError to catchall errors that happens, not just errors that happens in the invoked actor. ie, catch synchronous errors from actions and inputs as well.
See#5271 (comment)

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