mutate() and the deduping interval

Bug report

Description / Observed Behavior

I prefetch and mutate some data when the user hovers a link using mutate(key, data, false) When the user clicks the link, the page is loaded and useSWR revalidates the data.

However, the hover and the click where made within deduping interval.

Expected Behavior

Do not revalidate if mutate(key, data, false) has been called within the deduping interval

Repro Steps / Code Example

export async function prefetch(){
  mutate("/api/data", () => fetcher("/api/data"), false)
}

export function DataPage(){
  const res = useSWR("/api/data", fetcher) // will revalidate even though mutate has been called withing the deduping interval

  return <>
    ...
  </>
}

Additional Context

swr@1.0.0

[hazae41]

For those who don’t want to scratch their heads anymore, wondering why the fuck swr does this, I made my own library.

https://github.com/hazae41/xswr

It uses composition-based hooks and has a very easy learning curve, and 0% weird behaviour.

[hazae41]

I tried and it doesn’t revalidate, but I want it to revalidate if the stale data is older than the deduping interval