vercel/swr

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React Hooks for Data Fetching

Stars: 32.5k
Forks: 1.4k
Open beginner issues: 0
Indexed issues: 147
Avg merge: 28m
Merged PRs (30d): 2

Dominant language: TypeScript
License: MIT
Last GitHub push: Sep 14, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
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147 open issues indexed

Older Preload state overwrites a more recent mutated cached value Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

vercel/swr#4327 · 1 comment · Opened Sep 6, 2026
`useSWRImmutable` ignores hook-level `refreshInterval` since 2.4.0 (regression of #4208) Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

vercel/swr#4322 · 1 comment · 1 reaction · Opened Aug 28, 2026
Suspense mode passes an uncached promise to use(), triggering React's uncached-promise warning Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

vercel/swr#4314 · 1 comment · Opened Aug 12, 2026
[useSWRMutation] `trigger` called within `<form action />` won't have proper `isMutating` Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

vercel/swr#4247 · Opened Apr 24, 2026
useSWRMutation trigger is uncallable when wrapped in a generic function Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

vercel/swr#4234 · Opened Mar 25, 2026
codesandbox ci migration Open

vercel/swr#4233 · 1 assignee · Opened Mar 18, 2026
Unexpected fetcher call on focus when using useSWRImmutable Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

vercel/swr#4225 · Opened Feb 25, 2026
Infinite loop when passing `onSuccess: undefined` explicitly Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

vercel/swr#4218 · 1 comment · Opened Feb 7, 2026
Documentation inconsistency: useSWRMutation doesn't accept null key unlike useSWR Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

vercel/swr#4217 · 4 comments · 2 reactions · Opened Feb 4, 2026
Data in client side Next.js app bundle not being fetched consistently after updating to 2.4.0 Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

vercel/swr#4215 · 2 reactions · Opened Feb 3, 2026
useSWRSubscription does not work with async subscribe function Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

vercel/swr#4214 · 1 comment · 1 reaction · Opened Feb 2, 2026
Prefetching data with dynamic keys in Nextjs 16 `cacheComponents: true` Open

Difficulty 5/5 Over a week Newbie friendliness 24/100

vercel/swr#4211 · 4 comments · Opened Jan 23, 2026
SWR re-renders the whole paginated data array when optimisticData and data functions return an array Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

vercel/swr#4180 · 1 comment · Opened Nov 13, 2025
Destruct "error" from useSWR throws an error Open

reproduction needed

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

vercel/swr#4179 · 2 comments · 4 reactions · Opened Nov 7, 2025
cache.get() not working with fallback Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

vercel/swr#4175 · 1 comment · Opened Oct 1, 2025
onSuccess in useSWRMutation does not await async callbacks Open

discussion

Difficulty 3/5 1-2 days Newbie friendliness 45/100

vercel/swr#4171 · 1 comment · Opened Sep 15, 2025
useSWRInfinite hook returns incorrect data on versions >= 2.3.0 Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

vercel/swr#4170 · 1 comment · Opened Sep 8, 2025
Typings do not catch mistyped fetcher arguments Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

vercel/swr#4166 · Opened Aug 22, 2025
Feature request: exported types / easier augmentation patterns Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

vercel/swr#4164 · Opened Aug 18, 2025
SWRMutationConfiguration.optimisticData types is not correct Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

vercel/swr#4161 · 1 comment · 1 reaction · Opened Aug 18, 2025
Global mutate not causing rerender for hooks from swr/immutable Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

vercel/swr#4158 · 2 comments · Opened Aug 12, 2025
Typescript doesn't work properly for suspense configuration Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

vercel/swr#4157 · 1 comment · Opened Aug 12, 2025
Custom compare function in useSWR is called excessively Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

vercel/swr#4153 · Opened Aug 6, 2025
Unstable Vitest Runs – Occasional Error Without Clear Cause Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

vercel/swr#4152 · 1 comment · Opened Jul 31, 2025
Global mutate with a matcher function does not receive keys from useSWRInfinite Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

vercel/swr#4149 · 2 comments · 2 reactions · Opened Jul 27, 2025
when keepPreviousData is true, Suspense Fallback just show once Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

vercel/swr#4147 · Opened Jul 20, 2025
SWR cannot properly infer the argument types of fetcher from key in some condition Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

vercel/swr#4145 · Opened Jul 19, 2025
Revalidation on focus broken in Chrome Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

vercel/swr#4130 · 3 comments · Opened May 28, 2025
optimisticData not working after upgrading to Expo 53 Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

vercel/swr#4129 · 5 comments · 6 reactions · Opened May 27, 2025
Suspense mode with `useTransition` mutate not work expectly Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

vercel/swr#4113 · 2 comments · Opened Mar 31, 2025
useSWRInfinite - Mutate multiple items Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

vercel/swr#4104 · 1 comment · Opened Mar 8, 2025
mutate optimisticData does not use updated optimistic state on consecutive calls Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

vercel/swr#4100 · 2 comments · Opened Feb 24, 2025
Non isolated behavior in multiple `useSWRInfinite` with same URL Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

vercel/swr#4098 · 1 comment · Opened Feb 19, 2025
Make providing fallback data for `useSWRSubscription` more intuitive Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

vercel/swr#4094 · 1 comment · Opened Feb 15, 2025
hash function does multiple toStrings when it could do 1 Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

vercel/swr#4090 · 1 comment · Opened Feb 9, 2025
Feature request: Add configuration for running SWR on simulated runtimes on the server Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

vercel/swr#4083 · 2 comments · 3 reactions · Opened Feb 3, 2025
When using two `useSWRInfinite` in one page, `initialPageSize` of one is overwritten by `initialPageSize` of other. Open

Difficulty 4/5 3-5 days Newbie friendliness 28/100

vercel/swr#4082 · 2 comments · Opened Jan 30, 2025
Can't import the named export 'createContext' from non EcmaScript module (only default export is available) Open

reproduction needed

Difficulty 4/5 3-5 days Newbie friendliness 32/100

vercel/swr#3058 · 17 comments · 4 reactions · Opened Dec 24, 2024
cache on useSWRConfig is delayed Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

vercel/swr#3056 · 1 comment · Opened Dec 19, 2024
Type-narrowing doesn't work Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

vercel/swr#3055 · 14 comments · 1 reaction · Opened Dec 17, 2024
`revalidateOnMount` With Fallback triggers `isLoading` instead of `isValidating` Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

vercel/swr#3046 · 2 comments · Opened Dec 5, 2024
When using useSWRInfinite with {revalidateOnMount: true, revalidateFirstPage: false}, if there is a useLayoutEffect, the component will not make a new request when it is mounted. Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

vercel/swr#3042 · 2 comments · 1 reaction · Opened Nov 19, 2024
onSuccess not called after upgrading from Expo 51 to 52 Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

vercel/swr#3040 · 3 comments · 1 reaction · Opened Nov 13, 2024
refreshWhenHidden not working properly Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

vercel/swr#3039 · 2 comments · 1 reaction · Opened Nov 13, 2024
FetcherResponse not exported Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

vercel/swr#3038 · Opened Nov 13, 2024
useSWRInfinite could not load new page correctly after `clear` and `refresh` Open

area: infinite area: pagination

Difficulty 3/5 1-2 days Newbie friendliness 35/100

vercel/swr#3037 · Opened Nov 11, 2024
useSWR not back to fallback data after switching key to fallback key when keepPreviousData is true Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

vercel/swr#3034 · 5 comments · 4 reactions · Opened Oct 31, 2024
Making changes to data prop incorrectly updates the cache Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

vercel/swr#3032 · 1 comment · Opened Oct 28, 2024
Asynchronous mutations are handled when finished. Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

vercel/swr#3031 · 1 comment · 1 reaction · Opened Oct 27, 2024
Clear Cache Hook Open

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

vercel/swr#3023 · 1 comment · 2 reactions · Opened Oct 2, 2024

vercel/swr

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