1.2.1

Highlights of This Release

shouldRetryOnError accepts a function

Previously shouldRetryOnError is either true or false. Now it accepts a function that conditionally determines if SWR should retry. Here's a simple example:

const fetcher = url => fetch(url).then(res => {
  // Fetcher throws if the response code is not 2xx.
  if (!res.ok) throw res
  return res.json()
})

useSWR(key, fetcher, {
  shouldRetryOnError: (error) => {
    // We skip retrying if the API is returning 404:
    if (error.status === 404) return false
    return true
  }
})

Thanks to @sairajchouhan for contributing!

What's Changed

• shouldRetryOnError accepts a function that can be used to conditionally stop retrying by @sairajchouhan in https://github.com/vercel/swr/pull/1816
• build(deps-dev): bump next from 12.0.8 to 12.0.9 by @dependabot in https://github.com/vercel/swr/pull/1821
• fix: useSWRInfinite revalidates with revalidateOnMount by @koba04 in https://github.com/vercel/swr/pull/1830

New Contributors

• @sairajchouhan made their first contribution in https://github.com/vercel/swr/pull/1816

Full Changelog: https://github.com/vercel/swr/compare/1.2.0...1.2.1