Reaching invalid state by dispatching continuosly

[shakdwipeea]

I am trying to run re-frame on clojure. I am running into a invalid route when I dispatch continuosly.
The error msg I get is:

Exception in thread "pool-1-thread-1" clojure.lang.ExceptionInfo: re-frame: router state transition not found. :scheduled :finish-run {:fsm-state :scheduled, :trigger :finish-run}

I have created a repo to reproduce this:
https://github.com/shakdwipeea/reframe-state-transition-bug

[danielcompton]

It looks like there may be a race condition here in the Clojure (note, not ClojureScript) code. I could reproduce this as well. After looking at the code for a few minutes, my best guess is that an event is dispatched while the executor is running and the FSM is in the :running state. The executor tries to run the :finish-run trigger, but underneath it, the FSM was moved back to the :scheduled state.

[danielcompton]

Fixed in #471

[piotr-yuxuan]

That feeling when I've been stumbling upon a weird error for some hours, finally I get convinced that nothing obvious in my code is responsible for it, I find this issue which has exactly the same symptoms and at the end of it I can read « Fixed » ❤️

[piotr-yuxuan]

@scgilardi and @danielcompton thanks a lot for your work in #471. However, might I suggest you to release it? ^^ looks like it's currently in master, but latest release comes from February.