hello. I was trying the re-navigate app (one of the examples in re-natals repo) and if I tap the "next" button twice or more but quickly, the app breaks

is that because of 'dispatch'

?

should it be using dispatch-sync or something? is there a way to fix that?

@pvinis, interesting, in what way does it break?

I mean it crashes

and as far as I saw, it's because of dispatch?

does it not happen to you?

@pvinis Yes, I was able to reproduce it, it seems the handler is not idempotent

what does that mean?

The function mutates the state multiple times when it should not

ah ok

so what would be the fix here?

"Disable button after first click" would be one way to fix it

"Make mutating function idempotent" - another