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Releases3Avg0/wkVersionsv2.3.7 → v2.4.0

Feb 1, 2026

What's Changed

chore: Migrate suspense related tests to e2e by @promer94 in https://github.com/vercel/swr/pull/4204
CI: add missing flag for canary test by @promer94 in https://github.com/vercel/swr/pull/4206
fix: Ensure useSWRImmutable overrides global refreshInterval by @CODEAbhinav-art in https://github.com/vercel/swr/pull/4208
fix: Extra render when changing to new key with useSWRImmutable by @promer94 in https://github.com/vercel/swr/pull/4209
fix: isHydration will cause unnecessary rerender by @promer94 in https://github.com/vercel/swr/pull/4212
fix: Ensure preload runs only on client by @Copilot in https://github.com/vercel/swr/pull/4213

New Contributors

@CODEAbhinav-art made their first contribution in https://github.com/vercel/swr/pull/4208
@Copilot made their first contribution in https://github.com/vercel/swr/pull/4213

Full Changelog: https://github.com/vercel/swr/compare/v2.3.8...v2.4.0

Dec 15, 2025

What's Changed

deps: upgrade dev deps for build by @promer94 in https://github.com/vercel/swr/pull/4188
update use-sync-external-store to latest by @huozhi in https://github.com/vercel/swr/pull/4189
fix: cve-2025-55182 critical rce vulnerability by @PierreCrb in https://github.com/vercel/swr/pull/4192
fix: cve-2025-55184 & CVE-2025-55183 by @PierreCrb in https://github.com/vercel/swr/pull/4198
upgrade dev dep nextjs by @huozhi in https://github.com/vercel/swr/pull/4199
update dev dependencies to address cve by @PierreCrb in https://github.com/vercel/swr/pull/4200
enhance: Improve TSDoc comments by @shuding in https://github.com/vercel/swr/pull/4203
test: Import act from React by @shuding in https://github.com/vercel/swr/pull/4202

New Contributors

@PierreCrb made their first contribution in https://github.com/vercel/swr/pull/4192

Full Changelog: https://github.com/vercel/swr/compare/v2.3.7...v2.3.8

Nov 28, 2025

What's Changed

deps: upgrade ci node version to 22 by @promer94 in https://github.com/vercel/swr/pull/4184
deps: upgrade pnpm version by @promer94 in https://github.com/vercel/swr/pull/4185
deps: upgrade playwright version by @promer94 in https://github.com/vercel/swr/pull/4186
deps: upgrade eslint version and fix lint problem by @promer94 in https://github.com/vercel/swr/pull/4187
feat: Add strictServerPrefetchWarning by @shuding in https://github.com/vercel/swr/pull/4183

Full Changelog: https://github.com/vercel/swr/compare/v2.3.6...v2.3.7

Aug 11, 2025

Patches

fix: do not error when not enabled during suspense by @huozhi in https://github.com/vercel/swr/pull/4156

Full Changelog: https://github.com/vercel/swr/compare/v2.3.5...v2.3.6

Aug 9, 2025

Patches

perf: optimize useSWRConfig with useMemo to maintain stable reference by @samuel871211 in https://github.com/vercel/swr/pull/4110 https://github.com/vercel/swr/pull/4076
fix: react.use should not depend on data condition by @huozhi in https://github.com/vercel/swr/pull/4150

Chores

doc: Sync PublicConfiguration.onDiscarded tsdoc with SWR official website by @samuel871211 in
test: e2e test for 2702 by @promer94 in https://github.com/vercel/swr/pull/4154

New Contributors

@eungwang1 made their first contribution in https://github.com/vercel/swr/pull/2947

Full Changelog: https://github.com/vercel/swr/compare/v2.3.4...v2.3.5

Aug 6, 2025

Patches

perf: optimize useSWRConfig with useMemo to maintain stable reference by @samuel871211 in https://github.com/vercel/swr/pull/4110
doc: Sync PublicConfiguration.onDiscarded tsdoc with SWR official website by @samuel871211 in https://github.com/vercel/swr/pull/4076
feat: modify cache type to allow generic usage by @eungwang1 in https://github.com/vercel/swr/pull/2947
Revert "feat: modify cache type to allow generic usage" by @huozhi in https://github.com/vercel/swr/pull/4151
fix: react.use should not depend on data condition by @huozhi in https://github.com/vercel/swr/pull/4150

New Contributors

@eungwang1 made their first contribution in https://github.com/vercel/swr/pull/2947

Full Changelog: https://github.com/vercel/swr/compare/v2.3.4...v2.3.5-beta.0

Jul 2, 2025

What's Changed

Fix markdown typo by @Nusab19 in https://github.com/vercel/swr/pull/4106
fix: check "if (!error)" skip error if value is cast to false by @vtgrachev in https://github.com/vercel/swr/pull/4118
feat: Improve global suspense-enabled data type by @oosawy in https://github.com/vercel/swr/pull/4126
fix: Performance improvement by reducing calls to toString() by @garyhuntddn in https://github.com/vercel/swr/pull/4092
fix: Optimize the revalidation logic for same key requests. by @agadzik in https://github.com/vercel/swr/pull/4138

New Contributors

@Nusab19 made their first contribution in https://github.com/vercel/swr/pull/4106
@vtgrachev made their first contribution in https://github.com/vercel/swr/pull/4118
@garyhuntddn made their first contribution in https://github.com/vercel/swr/pull/4092

Full Changelog: https://github.com/vercel/swr/compare/v2.3.3...v2.3.4

Mar 6, 2025

Patches

enhance: use empty prototype object by @huozhi in https://github.com/vercel/swr/pull/4099
Initialise nextFocusRevalidatedAt on mount by @mgoodfellow in https://github.com/vercel/swr/pull/2857

Misc

Update Twitter references to X by @ManuLpz4 in https://github.com/vercel/swr/pull/4103

New Contributors

@ManuLpz4 made their first contribution in https://github.com/vercel/swr/pull/4103
@mgoodfellow made their first contribution in https://github.com/vercel/swr/pull/2857

Full Changelog: https://github.com/vercel/swr/compare/v2.3.2...v2.3.3

Feb 5, 2025

Patches

(fix) keepPreviousData: return fallback instead of undefined value by @dvoytenko in https://github.com/vercel/swr/pull/4087

Full Changelog: https://github.com/vercel/swr/compare/v2.3.1...v2.3.2

Fixes

fix: missing throwOnError in SWRMutationHook options by @Ram4GB in https://github.com/vercel/swr/pull/3054
fix: sever env detection for deno by @elrrrrrrr in https://github.com/vercel/swr/pull/4064
keepPreviousData: return fallback instead of undefined value by @dvoytenko in https://github.com/vercel/swr/pull/4084

Misc

ci: update pnpm setup and lock pnpm vesion by @huozhi in https://github.com/vercel/swr/pull/4085
build: bump bundler by @huozhi in https://github.com/vercel/swr/pull/4086
refactor: type improvement of useSWRHandler by @samuel871211 in https://github.com/vercel/swr/pull/4075

New Contributors

@Ram4GB made their first contribution in https://github.com/vercel/swr/pull/3054
@elrrrrrrr made their first contribution in https://github.com/vercel/swr/pull/4064
@dvoytenko made their first contribution in https://github.com/vercel/swr/pull/4084
@samuel871211 made their first contribution in https://github.com/vercel/swr/pull/4075

Full Changelog: https://github.com/vercel/swr/compare/v2.3.0...v2.3.1

Dec 23, 2024

Feature

Support promises as fallback data by @shuding in https://github.com/vercel/swr/pull/2891
Allow to use with React 19 by @vladshcherbin and @devjiwonchoi in https://github.com/vercel/swr/pull/3047, https://github.com/vercel/swr/pull/2963

Patches

fix #3030 and run relateive test in edge-runtime by @promer94 in https://github.com/vercel/swr/pull/3036
fix: Only suspend when using the fallback by @shuding in https://github.com/vercel/swr/pull/3045
fix type check in tests by @huozhi in https://github.com/vercel/swr/pull/3052
fix: Replace the deprecated 'window' with 'globalThis' for Deno by @saul-atomrigs in https://github.com/vercel/swr/pull/2915
fix: check if config.fallback is undefined by @taku-hatano in https://github.com/vercel/swr/pull/2913
fix(infinte): export SWRInfiniteKeyedMutator type by @LeoMcA in https://github.com/vercel/swr/pull/2900
fix: Improve comparison performance by @shuding in https://github.com/vercel/swr/pull/2973
Export ScopedMutator type by @joshkel in https://github.com/vercel/swr/pull/2937
Improve-Type-Safety-and-State-Access-in-useStateWithDeps-Hook by @O-BERNARDOFOEGBU in https://github.com/vercel/swr/pull/3027

Misc

chore: bump dev deps and change example react version to latest by @huozhi in https://github.com/vercel/swr/pull/2894
build: fix beta release job by @huozhi in https://github.com/vercel/swr/pull/2895
chore: Improve test coverage by @shuding in https://github.com/vercel/swr/pull/2903
chore: simplify test coverage strategy by @huozhi in https://github.com/vercel/swr/pull/2909
build: simplify react-server export and update bundler by @huozhi in https://github.com/vercel/swr/pull/2897
examples: add RSC streaming pre-render with promise fallback example by @promer94 in https://github.com/vercel/swr/pull/2905
Drop client-only by @huozhi in https://github.com/vercel/swr/pull/2910
Mark package as side-effect free by @htunnicliff in https://github.com/vercel/swr/pull/2904
Drop exports module field by @huozhi in https://github.com/vercel/swr/pull/2911
chore: update pkg script watch by @unliar in https://github.com/vercel/swr/pull/2920
test: remove console.error times check by @promer94 in https://github.com/vercel/swr/pull/2918
build: bump bundler for perf by @huozhi in https://github.com/vercel/swr/pull/2929
Fix bundling of client entry chunks by @huozhi in https://github.com/vercel/swr/pull/2932
ci: fix ci error and upgrade action version by @promer94 in https://github.com/vercel/swr/pull/2952
Add SWRInfiniteMutatorOptions type to export by @ludwigbacklund in https://github.com/vercel/swr/pull/2954
test: update the revalidate function test for useSWRInfinite by @koba04 in https://github.com/vercel/swr/pull/2955
chore: upgrade nextjs dev dep for e2e testing by @huozhi in https://github.com/vercel/swr/pull/3044
ci: simplify ci config and bump some deps version by @promer94 in https://github.com/vercel/swr/pull/2770
chore: reorganize entries by @huozhi in https://github.com/vercel/swr/pull/3048
Bump bundler and reorganize serialize exports by @huozhi in https://github.com/vercel/swr/pull/3049
upgrade use-sync-external-store to support react 19 by @huozhi in https://github.com/vercel/swr/pull/3050

New Contributors

@htunnicliff made their first contribution in https://github.com/vercel/swr/pull/2904
@saul-atomrigs made their first contribution in https://github.com/vercel/swr/pull/2915
@unliar made their first contribution in https://github.com/vercel/swr/pull/2920
@ludwigbacklund made their first contribution in https://github.com/vercel/swr/pull/2954
@taku-hatano made their first contribution in https://github.com/vercel/swr/pull/2913
@LeoMcA made their first contribution in https://github.com/vercel/swr/pull/2900
@devjiwonchoi made their first contribution in https://github.com/vercel/swr/pull/2963
@vladshcherbin made their first contribution in https://github.com/vercel/swr/pull/3047
@O-BERNARDOFOEGBU made their first contribution in https://github.com/vercel/swr/pull/3027

Full Changelog: https://github.com/vercel/swr/compare/v2.2.5...v2.3.0

Jun 1, 2024

What's Changed

fix: Improve comparison performance by @shuding in https://github.com/vercel/swr/pull/2973

Full Changelog: https://github.com/vercel/swr/compare/v2.2.6-beta.3...v2.2.6-beta.4

May 24, 2024

What's Changed

ci: fix ci error and upgrade action version by @promer94 in https://github.com/vercel/swr/pull/2952
Add SWRInfiniteMutatorOptions type to export by @ludwigbacklund in https://github.com/vercel/swr/pull/2954
test: update the revalidate function test for useSWRInfinite by @koba04 in https://github.com/vercel/swr/pull/2955
Export ScopedMutator type by @joshkel in https://github.com/vercel/swr/pull/2937
fix: check if config.fallback is undefined by @taku-hatano in https://github.com/vercel/swr/pull/2913
fix(infinte): export SWRInfiniteKeyedMutator type by @LeoMcA in https://github.com/vercel/swr/pull/2900
chore: add react peerDeps 19 by @devjiwonchoi in https://github.com/vercel/swr/pull/2963

New Contributors

@ludwigbacklund made their first contribution in https://github.com/vercel/swr/pull/2954
@taku-hatano made their first contribution in https://github.com/vercel/swr/pull/2913
@LeoMcA made their first contribution in https://github.com/vercel/swr/pull/2900
@devjiwonchoi made their first contribution in https://github.com/vercel/swr/pull/2963

Full Changelog: https://github.com/vercel/swr/compare/v2.2.6-beta.2...v2.2.6-beta.3

Apr 6, 2024

Patches

build: bump bundler for perf by @huozhi in https://github.com/vercel/swr/pull/2929
Fix bundling of client entry chunks by @huozhi in https://github.com/vercel/swr/pull/2932

Full Changelog: https://github.com/vercel/swr/compare/v2.2.6-beta.1...v2.2.6-beta.2

Mar 31, 2024

What's Changed

build: fix beta release job by @huozhi in https://github.com/vercel/swr/pull/2895
chore: Improve test coverage by @shuding in https://github.com/vercel/swr/pull/2903
chore: simplify test coverage strategy by @huozhi in https://github.com/vercel/swr/pull/2909
build: simplify react-server export and update bundler by @huozhi in https://github.com/vercel/swr/pull/2897
examples: add RSC streaming pre-render with promise fallback example by @promer94 in https://github.com/vercel/swr/pull/2905
Drop client-only by @huozhi in https://github.com/vercel/swr/pull/2910
Mark package as side-effect free by @htunnicliff in https://github.com/vercel/swr/pull/2904
Drop exports module field by @huozhi in https://github.com/vercel/swr/pull/2911
fix: Replace the deprecated 'window' with 'globalThis' for Deno by @saul-atomrigs in https://github.com/vercel/swr/pull/2915
chore: update pkg script watch by @unliar in https://github.com/vercel/swr/pull/2920
test: remove console.error times check by @promer94 in https://github.com/vercel/swr/pull/2918

New Contributors

@htunnicliff made their first contribution in https://github.com/vercel/swr/pull/2904
@saul-atomrigs made their first contribution in https://github.com/vercel/swr/pull/2915
@unliar made their first contribution in https://github.com/vercel/swr/pull/2920

Full Changelog: https://github.com/vercel/swr/compare/v2.2.6-beta.0...v2.2.6-beta.1

Feb 15, 2024

Patches

types: isLoading typed as boolean when using fallbackData (#2866) by @yjrhgvbn in https://github.com/vercel/swr/pull/2875
fix: allow onErrorRetry on inactive tab without focus/reconnect revalidation by @qkdreyer in https://github.com/vercel/swr/pull/2848
feat: pass a function to the revalidate option in mutate by @koba04 in https://github.com/vercel/swr/pull/2862
fix: SWRConfiguration type by @hulla-dev in https://github.com/vercel/swr/pull/2882

Misc

build: use new bundle convention by @huozhi in https://github.com/vercel/swr/pull/2865
chore: update pnpm-lock.yaml by @koba04 in https://github.com/vercel/swr/pull/2874
chore: remove useless comment by @kongmoumou in https://github.com/vercel/swr/pull/2868
test: run pnpm test on CI by @koba04 in https://github.com/vercel/swr/pull/2872
fix: all act warnings by @koba04 in https://github.com/vercel/swr/pull/2861
Update bundler by @huozhi in https://github.com/vercel/swr/pull/2830

New Contributors

@kongmoumou made their first contribution in https://github.com/vercel/swr/pull/2868
@yjrhgvbn made their first contribution in https://github.com/vercel/swr/pull/2875
@qkdreyer made their first contribution in https://github.com/vercel/swr/pull/2848
@hulla-dev made their first contribution in https://github.com/vercel/swr/pull/2882

Full Changelog: https://github.com/vercel/swr/compare/v2.2.4...v2.2.5

Sep 25, 2023

Patches

Revert "Remove index.js suffix of use-sync-external-store/shim to support React Native" by @huozhi in https://github.com/vercel/swr/pull/2802

Full Changelog: https://github.com/vercel/swr/compare/v2.2.3...v2.2.4

Patches

fix: remove permissive type by @wcatron in https://github.com/vercel/swr/pull/2759
Remove index.js suffix of use-sync-external-store/shim to support React Native by @malash in https://github.com/vercel/swr/pull/2767
fix: default to fetch type in keyed mutator by @linkvt in https://github.com/vercel/swr/pull/2753
types: export mutation types by @promer94 in https://github.com/vercel/swr/pull/2780

Misc

test: update tests, use matched types for mutate api by @huozhi in https://github.com/vercel/swr/pull/2781

New Contributors

@wcatron made their first contribution in https://github.com/vercel/swr/pull/2759
@malash made their first contribution in https://github.com/vercel/swr/pull/2767
@linkvt made their first contribution in https://github.com/vercel/swr/pull/2753

Full Changelog: https://github.com/vercel/swr/compare/v2.2.2...v2.2.3

Aug 27, 2023

What's Changed

fix: It should use startTransition only when IS_REACT_LEGACY is false by @TopGrd in https://github.com/vercel/swr/pull/2756
fix: simplify ArgumentsTuple by @Andarist in https://github.com/vercel/swr/pull/2761

New Contributors

@TopGrd made their first contribution in https://github.com/vercel/swr/pull/2756
@Andarist made their first contribution in https://github.com/vercel/swr/pull/2761

Full Changelog: https://github.com/vercel/swr/compare/v2.2.1...v2.2.2

What's Changed

Add use client directive for client components exports by @huozhi in https://github.com/vercel/swr/pull/2696
remove the 'use client' directive and add client-only to useSWR entry. by @promer94 in https://github.com/vercel/swr/pull/2705
fix: should serialize subscription fn key by @promer94 in https://github.com/vercel/swr/pull/2711
build(deps-dev): bump word-wrap from 1.2.3 to 1.2.4 by @dependabot in https://github.com/vercel/swr/pull/2720
fix: only make data and error update as a non-blocking transition by @promer94 in https://github.com/vercel/swr/pull/2691
build: generate d.mts for for .mjs, so typescript could resolve types correctly by @promer94 in https://github.com/vercel/swr/pull/2695
fix(infinite): Fix the ability to use preload along with useSWRInfinite by @agadzik in https://github.com/vercel/swr/pull/2723
fix: Ensure that using preload with useSWRInfinite returns back an array of data by @agadzik in https://github.com/vercel/swr/pull/2726
fix: preload request should be consumed within revalidate to support parallel option by @promer94 in https://github.com/vercel/swr/pull/2727
Fix the issue that useSWR revalidation isn't triggered if the useSWR call happens after mutation by @Ponyets in https://github.com/vercel/swr/pull/2731
fix(mutate): fix types of mutate/trigger; make mutate/trigger always return the result of fetcher by @Ponyets in https://github.com/vercel/swr/pull/2708
build(deps-dev): bump tough-cookie from 4.1.2 to 4.1.3 by @dependabot in https://github.com/vercel/swr/pull/2735
build(deps-dev): bump json5 from 2.2.1 to 2.2.3 by @dependabot in https://github.com/vercel/swr/pull/2736
docs: use isLoading instead of !data by @pawfa in https://github.com/vercel/swr/pull/2734

New Contributors

@agadzik made their first contribution in https://github.com/vercel/swr/pull/2723
@Ponyets made their first contribution in https://github.com/vercel/swr/pull/2731
@pawfa made their first contribution in https://github.com/vercel/swr/pull/2734

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