rrv7 about fetcher data state?

[pbpoon]

when I use useFetcher in some submit, the server action return data, then I in the component use fetcher.data console.log in the chrome console print 4 times ?why

[sergiodxa]

Apart of fetcher.data, there's also fetcher.state going from idle to submitting to idle again, also other parts of the router state needs to change and since React context has no way to only subscribe to a part of a value any internal state change in the router will cause a re-render.

Remember that re-renders are not bad, slow renders are bad, if you component render fast enough there's no issue will letting it re-render many times.