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Cancel InteractionManager's task on unmount #233

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@avet-m avet-m commented Jun 8, 2021

There are some cases when interaction manager's task executing when component have already unmounted and React return a warning when setState happed on unmounted component. The whole warning you can see below:

Can't perform a React state update on an unmounted component. This is a no-op, but it indicates a memory leak in your application. To fix, cancel all subscriptions and asynchronous tasks in a useEffect cleanup function

So this tiny fix will cancel task on component unmount.

Fix for this warning:

 Can't perform a React state update on an unmounted component. This is a no-op, but it indicates a memory leak in your application. To fix, cancel all subscriptions and asynchronous tasks in a useEffect cleanup function
Comment on lines +8 to +13
const {cancel} = InteractionManager.runAfterInteractions(() => {
updateInteractionStatus(true)
})

return () => {
cancel?.()
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runAfterInteractions returns a promise and I'm not sure if they are required to have their methods bound so that they work without this being set 🤔

Also, I think that cancel will always be set, right? It's documented as returning a cancelable promise 🤔

What do you think about this instead:

Suggested change
const {cancel} = InteractionManager.runAfterInteractions(() => {
updateInteractionStatus(true)
})
return () => {
cancel?.()
const promise = InteractionManager.runAfterInteractions(() => {
updateInteractionStatus(true)
})
return () => {
promise.cancel()

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2 participants