Cancelation

[shuding]

⚠️ This proposal isn't finalized yet.

An abort signal will always be passed to fetcher via the option:

useSWR('/api', (url, { signal }) => {
  return fetch(url, { signal }).then(res => res.json())
})

And SWR will abort the signal when the request is discarded and the result is no longer needed. After aborted, SWR ignores the AbortError thrown.

[700software]

This is amazing! Elegant and in spirit with SWR's simplicity.

It would cause aborts to happen in applications where none were happening before. But is it a breaking change? I think not.

[l-mbert]

Looks good!
Maybe add a new configurarion option for People who don't want it?

[CaptainPants]

I have given implementation of this a go in the above PR if anyone is competent to have a look and give any feedback? Cheers.