The fact that useEffect is called after render (return) doesn't mean anything to your Application component, I hope you realise this. Any component update, apart from loading, will update wasLoading value. And then when loading will eventually change, the fact that useEffect is called after render will play cruel joke with you, because your if statement will never fire. Hmm...
...though I guess in this will still work based on the fact that useEffect in custom hook will always be invoked before the one in Application, just in time switching values back. OK
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The fact that
useEffectis called after render (return) doesn't mean anything to yourApplicationcomponent, I hope you realise this. Any component update, apart fromloading, will updatewasLoadingvalue. And then whenloadingwill eventually change, the fact thatuseEffectis called after render will play cruel joke with you, because yourifstatement will never fire. Hmm......though I guess in this will still work based on the fact that
useEffectin custom hook will always be invoked before the one inApplication, just in time switching values back. OK