v15.5.2

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v15.5.1

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v15.5.2

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v15.5.1

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v15.5.0

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v15.4.7

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v15.4.6

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[!NOTE]
This release is backporting bug fixes. It does not include all pending features/changes on canary.

Core Changes

• fix: _error page's req.url can be overwritten to dynamic param on minimal mode (#​82347)
• fix: add ?dpl to fonts in /_next/static/media (#​82384)

Credits

Huge thanks to @​devjiwonchoi, @​ijjk, and @​styfle for helping!

v15.4.5

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v15.4.4

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v15.4.3

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v15.4.2

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v15.4.1

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v15.4.0

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v15.3.5

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v15.3.4

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v15.3.3

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v15.3.2

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v15.3.1

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[!NOTE]
This release is backporting bug fixes. It does not include all pending features/changes on canary.

Core Changes

• chore: Backport SWC-based RC optimization (#​78260)
• fix: bump image-size@1.2.1 (#​78164)

Credits

Huge thanks to @​kdy1 and @​styfle for helping!

v15.3.0

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Core Changes

• [dev-overlay] Customize <select> styling for consistency: #​76973
• Upgrade React from 029e8bd6-20250306 to 0ca3deeb-20250311: #​76989
• [metadata]: add pinterest meta tag: #​76988
• [dev-overlay] ensure stripping overlay bundle in prod build: #​76976
• Apply env inlining during generate build mode: #​76990
• Turbopack: Implement deploymentId: #​76904
• track persistent caching usage: #​76996
• [metadata] re-insert icons to head for streamed metadata: #​76915
• Upgrade React from 0ca3deeb-20250311 to 6aa8254b-20250312: #​77033
• Move static-env imports: #​77035
• [dev-overlay] Add size setting to preferences: #​77027
• Add config for only generating static env: #​77038
• chore(HMR clients): Clean up and share code between app and pages router: #​76960
• Add dev warning for cross-origin and stabilize allowedDevOrigins: #​77044
• unify allowed origin detection handling: #​77053
• Handle hash change in all files for static env: #​77058
• [dev-overlay] highlight errored code line for runtime errors: #​77078
• NFT: Ignore all of Webpack: #​77081
• Add experimental build mode flag for env: #​77089
• (feat) support client-side instrumentation: #​76916
• Fix JSDoc comment for 'seconds' cache life profile: #​77084
• refactor(HMR clients): Encapsulate some of the turbopack state tracking into a shared TurbopackHmr class: #​76994
• Slightly improve error handling for unknown server actions: #​77135
• Fix output standalone for alternative bundler: #​76971
• Add alternate bundler plugin information to next info: #​77059
• [metadata] remove the default segement check for metadata rendering: #​77119
• [dev-overlay] Fix stacking order of highlighted line: #​77189
• Upgrade React from 6aa8254b-20250312 to 5398b711-20250314: #​77129
• fix(styled-jsx): Pass useLightningcss option to styled-jsx correctly: #​77008
• log the instrumentation-client execution time: #​77121
• Turbopack: canary-gate production builds: #​77146
• [dev-overlay] remove special handling for missing tag error : #​77147
• chore(react-dev-overlay): Remove confusingly underscored variables in useErrorOverlayReducer: #​77205
• Update middleware request header: #​77201
• Update default allowed origins list: #​77212
• Ensure deploymentId is used for CSS preloads: #​77210
• chore(HMR clients): Fix a bunch of typescript errors by including the appropriate webpack type declarations: #​77207
• Update cache handler interface: #​76687
• Turbopack: don't include AMP optimizer in NFT: #​77242
• Server actions should not read stale data after calling revalidate*: #​76885
• [dev-overlay] Blur fader for scrollable container: #​77196
• Make revalidate* work when followed by a redirect in a route handler: #​77090
• feat: onNavigate for link: #​77209
• fix: pass telemetry plugin rspack tests: #​77257
• feat(eslint-plugin): add minimal built-in flat presets: #​73873
• [perf] skip loading client manifest for static metadata routes: #​77260
• Upgrade React from 5398b711-20250314 to c69a5fc5-20250318: #​77249
• [ppr] Handle failed resume data cache entries: #​77258
• Bypass "use cache" caches when Draft Mode is enabled: #​77141
• chore(HMR clients): Clean up tryApplyUpdates, reduce differences between app/pages versions: #​77219
• Upgrade React from c69a5fc5-20250318 to db7dfe05-20250319: #​77295
• Turbopack: layout segment optimization for Pages: #​74815
• [dev-overlay] Make footer sticky without side effects: #​77327
• Alternate bundler: show state in app info message: #​77259
• Revert "Turbopack: layout segment optimization for Pages": #​77339
• [metadata] add Yeti to html limited bots: #​77335
• [dev-overlay] Remove unused code from pages: #​77325
• [metadata] remove dead code of metadata routes handling: #​77336
• Alternate bundler: pass more tests and update to 1.3.0-beta: #​77269
• [metadata] fix the metadata route like pages and refactor utils: #​77264
• fix: absolute assetPrefix url with path: #​77256
• clean up useReducer code re dev indicator: #​77354
• test: ensure that router identity stays stable when navigating: #​77356
• [dev-overlay] Remove unused fields from hydration error state: #​77332
• Turbopack: implement optimized css production chunking: #​77284
• only log when instrumentation client takes too long: #​77378
• switch development origin verification to be opt-in rather than opt-out: #​77395
• remove direct ip/port bypass in dev origin check: #​77414
• ensure /__next middleware URLs are included in the origin check: #​77416
• exclude images and static media from dev origin check: #​77417
• Refactor metadata and viewport preloading: #​77400
• [dev-overlay] Remove unused fields from unhandled error action event: #​77333
• Turbopack: Add --turbopack for next start: #​77442
• Update README: #​77464
• Remove unnecessary indirections around dispatch-related methods: #​77423
• Lift public router instance to module level : #​77426
• directly import param resolver in metadata: #​77401
• [metadata] always serve streaming metadata in build: #​77437
• directly import search param resolver in metadata: #​77402
• Remove forwardRef from Link in App Router: #​77471
• Match subrequest handling for edge and node: #​77474
• Add deprecation warning for legacyBehavior prop: #​77473
• feat: useLinkStatus: #​77300
• [dynamicIO] Avoid memory leak warning for hanging promises: #​77480
• [dev-overlay] Remove "Unhandled Runtime Error" label: #​77484
• Upgrade React from db7dfe05-20250319 to 740a4f7a-20250325: #​77507
• Upgrade React from 740a4f7a-20250325 to 313332d1-20250326: #​77527
• Do not call expireTags/getExpiration unnecessarily: #​77570
• fix(jest): stricter regex for 'server-only' in default config: #​77588
• Fix: RESTORE_ACTION should not be thenable: #​77582
• Use NEXT_PRIVATE_DEBUG_CACHE env variable for cache handler debug logs: #​77585
• fix: make sure body can be read using nodejs runtime in middleware: #​77553
• Update alternate bundler and pass more tests : #​77579
• Refactor build scripts and rewrite pack-next in TypeScript: #​77536
• fix isCsrfOriginAllowed handling for localhost: #​77594
• Turbopack build: fix deterministic build test: #​77618
• Turbopack build: Fix urlencoding test: #​77622
• [og] fix vercel og build issue on windows: #​77650
• [Segment Cache] Add "client-only" option: #​77655
• Remove useSyncExternalStore from useIsDevRendering: #​77651
• Track navigation timestamp on CacheNode: #​77251
• Upgrade @​playwright/test and cleanup internal APIs: #​77659
• Refactor: move "use cache" revalidation logic out of incremental cache: #​77577
• Remove obsolete update of implicit tags expiration after server action: #​77595
• Revert "Remove useSyncExternalStore from useIsDevRendering (#​77651)": #​77672
• Upgrade React from 313332d1-20250326 to 63779030-20250328: #​77643
• Turbopack build: Add marker for when a build used Turbopack: #​77674
• feat(images): use experimental isrFlushToDisk option to prevent writing optimized images to cache: #​70645
• doc: instrumentation-client: #​77649
• Alternate bundler: use equivalent native plugins for built-in plugins: #​77355
• Resolve Viewport separately from Metadata: #​77427
• fix(turbopack): Suppress logging for short no-op turbopack HMRs: #​76924
• Turbopack build: Fix node-file-trace test: #​77641
• Turbopack build: Implement error when using next start without --turbopack: #​77678
• legacyBehavior deprecation error should only trigger once: #​77687
• Pass only required props to NonIndex: #​77685
• Revert "fix: make sure body can be read using nodejs runtime in middleware": #​77690
• [dev-overlay] Harden types when handling hydration mismatches: #​77334
• [dev-overlay] Fix ref warning when Pages Router with React 18 is used: #​77726
• add support for cssmodules-pure-no-check to allow global CSS features like View Transitions: #​77321
• [dev-overlay] Only warn once per invalid sourcemap: #​77444
• [dynamicIO] only abort once per prerender: #​77747
• Turbopack build: Move Turbopack marker to SERVER_FILES_MANIFEST: #​77711
• Reapply "Turbopack: layout segment optimization for Pages" (#​77339): #​77696
• feat(next/image): support new URL() for images.remotePatterns: #​77692
• [dev-overlay] remove text wrap for terminal: #​76953
• Upgrade React from 63779030-20250328 to 040f8286-20250402: #​77742
• Optimize server runtime bundles: #​77723
• Turbopack Build: Remove cases of process.env.TURBOPACK: #​77757
• [dev-overlay] Fix unactionable useLayoutEffect warning if React 18 is used: #​77737
• [dev-tools] Fix flashing of disabled state on indicator: #​77727
• Webpack build: Add compiled in x seconds in missing places: #​77751
• Ignore an existing HMR refresh hash cookie with next start: #​77714
• Turbopack build: Replace process.env.TURBOPACK usage: #​77783
• Client instrumentation: onRouterTransitionStart: #​77791
• Turbopack: log telemetry events when TurbopackInternalErrors occur: #​77660
• Rename alternate bundler package name: #​77793
• Turbopack: fix sideEffects matching for non-relative globs: #​77693
• Revert "Upgrade @​playwright/test and cleanup internal APIs": #​77814
• [next-ts-plugin] fix: language service crashes / metadata plugin not working: #​77213
• [dev-overlay] always display bundler name on version info: #​77739
• [dev-overlay] sync horizontal scrollbar style: #​77769
• [dev-overlay] Read issueCount from non-async errors array: #​77821
• [dev-overlay] Fix error dialog resizing logic: #​77830
• Turbopack Build: Optimize instrumentation hook generation: #​77832
• [next-server] skip setting vary header for basic routes: #​77797
• Lazily call refreshTags and getExpiration: #​77779
• Add debug logging to default cache handler and "use cache" wrapper: #​77827
• [ts-next-plugin] fix: properly exit when failed to initialize: #​77842
• Alternate bundler: correctly inject react refresh loader: #​77713
• [dynamicIO] Fix dev warmup: #​77829
• fix: don't reset the prefetch segment data routes on loop: #​77845
• Ensure searchParams access in "use cache" triggers error when caught: #​77838
• Revert "[dev-overlay] Fix error dialog resizing logic": #​77849
• fix: add cache tags to segment prefetch responses: #​77846
• Avoid microtaskiness when lazily fetching from cache handlers: #​77843
• [Experiment] : #​77866
• [dev-overlay] disable font ligatures: #​77865
• Enable process.env.TURBOPACK when process.env.IS_TURBOPACK_TEST is set: #​77894
• [ts-next-plugin] fix: use getSourceFile instead of fileExists to check file existence: #​77863
• fix: only set request phase to "action" when actually running an action: #​76993
• Alternate bundler: fix react refresh and adjust sourcemap: #​77875
• Upgrade React from 040f8286-20250402 to 33661467-20250407: #​77899
• refactor: rename isAction to isPossibleServerAction: #​77011
• [logging] improve logging of port retry: #​77868
• Remove canary-gate and add experimental warning for alternate bundler: #​77806
• fix(next/image): bump sharp@0.34.1: #​77839
• Turbopack builds: Remove canary-gate and add experimental warning: #​77808
• feat: Disable char frequency analysis for mangler: #​77887
• Set Turbopack env var for internal modules: #​77902
• Don't externalize various new next/* entrypoints: #​77844
• Revert "Fix: RESTORE_ACTION should not be thenable": #​77909
• Fix resolve alternate bundler in monorepo: #​77913
• Output server.mjs for standalone with type: module: #​77944

Example Changes

• with-polyfills example: only link to specific browsers: #​77211
• Add example for alternate bundler: #​77057
• chore(examples): remove examples that can be v0'd: #​77349
• Alternate bundler example: use canary version: #​77754
• Fix Wasm example: #​77924

Misc Changes

• [test] consolidate hmr test for react 18.3: #​76975
• docs: update API example: #​76987
• docs: add Pinterest Rich Pins metadata example: #​77025
• fix(CI): Correctly call test/update-bundler-manifest.js script: #​77000
• Update bundler development test manifest: #​77040
• Update bundler production test manifest: #​77043
• Update Turbopack development test manifest: #​77041
• chore(github): remove /examples from contribution guidelines, remove examples issue template: #​77050
• Turbopack: when reading a non yet existing cell from a in progress tasks, wait for the computation to finish: #​77029
• Turbopack: wait before reading cells when the task is scheduled: #​77031
• Turbopack: don't call individual() again: #​77048
• Turbopack: create module graph strongly consistent: #​77051
• Turbopack: Vc stability of ModuleGraph: #​77052
• Turbopack: fix corrected time calcuation for trace server: #​77080
• Turbopack: fewer manifests for static metadata: #​77087
• Update Turbopack development test manifest: #​77071
• Update bundler production test manifest: #​77069
• Update bundler development test manifest: #​77068
• Revert "Update rust toolchain to 2025年03月12日": #​77103
• perf(turbopack): Merge nodes with same starting point: #​76938
• refactor(actions): Remove turbopack magic comments: #​77063
• Update Turbopack development test manifest: #​77108
• Turbopack: move must_use to actually have an effect: #​77111
• Turbopack: align chunking with graph entries: #​76441
• Turbopack: ChunkGroup in evaluated_chunk_group: #​76593
• Turbopack: charset=utf-8 in data-url source maps: #​77112
• Update bundler production test manifest: #​77107
• Update bundler development test manifest: #​77106
• Update Turbopack production test manifest: #​77109
• docs(scripts): update Script -> beforeInteractive docs: #​77136
• Add doc for instrumentation client hook: #​77134
• docs(scripts): missing 'soon': #​77137
• doc: diff between instrumentation vs instrumentation-client: #​77143
• Alternate bundler: add index.d.ts types to plugin: #​77144
• Alternate bundler: Add react-refresh as a dependency of plugin: #​77142
• build: Update swc_core to v16.6.0: #​77155
• Allow building node-pty in tests: #​77187
• Don't mark ppr-errors Turbopack dev tests as failed: #​76951
• Bump lightningcss: #​77132
• Update Turbopack production test manifest: #​77183
• Turbopack: fix graph layout segment optimization: #​77094
• Turbopack: split up server actions modules for better treeshaking: #​76877
• Turbopack: conditional parse in apply_module_type: #​77191
• build: Update swc_core to v16.6.2: #​77194
• Turbopack: more tracing: #​75351
• Update bundler development test manifest: #​77180
• Better failure tracking for middleware-custom-matchers-i18n: #​76974
• Update bundler production test manifest: #​77179
• fix(test/e2e/prerender): Remove race condition in test: #​77222
• Update Turbopack production test manifest: #​77228
• Update Turbopack development test manifest: #​77227
• [Turbopack] basic production chunking for CSS: #​75049
• docs: optimizing local dev: #​77140
• Update bundler production test manifest: #​77225
• devlow-bench: wait for complete ready for server startup event: #​77217
• fix(CI): Re-enable retries for bundler integration tests: #​77265
• Turbopack: handle non chunkable modules in module batches: #​77282
• Update Turbopack development test manifest: #​77276
• Update Turbopack production test manifest: #​77275
• Turbopack: avoid single css chunks when there is only a single chunk item: #​77283
• Update bundler development test manifest: #​77272
• Update bundler production test manifest: #​77273
• Turbopack: compute ordered entries in module batches: #​77294
• Update Turbopack production test manifest: #​77316
• Update Turbopack development test manifest: #​77317
• Update bundler production test manifest: #​77314
• fix(turbopack): Call .minify() of lightningcss StyleSheet: #​77313
• fix(CI build_and_deploy): Use a larger fetch-depth for build-native job: #​77307
• chore(turbopack): Fix a few syntactic nits: #​77310
• Update bundler development test manifest: #​77315
• Turbopack: refactor CssEmbed to avoid creating a chunk item: #​77303
• fix: Update swc_core and use rayon instead of chili: #​77338
• Fix chakra link: #​77280
• Update Turbopack production test manifest: #​77366
• Update Turbopack development test manifest: #​77365
• Turbopack: ignore static asset imports for Edge: #​77382
• Update bundler development test manifest: #​77364
• docs: clarify middleware use cases: #​77438
• fix(turbopack-bench): Limit copy_dir concurrency to avoid running out of file descriptors: #​77468
• docs: fix typo: #​77483
• Update swc_core to v16.10.0: #​77489
• fix(turbopack): Use strongly consistent reads for sourcemaps in napi FFI boundary: #​77511
• Update mappings in launch.json to improve debugging in VSCode: #​76559
• chore(ci): Configure codspeed: #​76884
• Update bundler production test manifest: #​77602
• Update bundler development test manifest: #​77603
• Update Turbopack development test manifest: #​77605
• Update Turbopack production test manifest: #​77604
• Turbopack build: Fix symbolic-file-links test: #​77615
• Update pnpm swc-build-native's file path: #​77623
• fix: Use standard PostCSS configuration in create-next-app format for ecosystem compatibility: #​77376
• Turbopack build: Fix basepath test: #​77630
• Turbopack: disable pages dir css test cases: #​77380
• Update bundler development test manifest: #​77627
• Update Turbopack development test manifest: #​77628
• Update bundler production test manifest: #​77626
• refactor(turbo-tasks): Make TraceRawVcs a supertrait of TaskInput: #​77397
• refactor(turbo-tasks): Make TraceRawVcs a supertrait of MagicAny: #​77596
• fix(turbopack): Recognize urls starting with // as external: #​77526
• Update CI build caching docs to include bun and other package manager: #​77633
• fix(turbopack): Fix panic while tree shaking optimization: #​77492
• fix(turbopack): Prevent duplicate in tree shaking: #​77491
• Turbopack: Skip ssr processing when next/dynamic ssr: false: #​77636
• Turbopack Build: CSR bailout test skip check for file path: #​77639
• Turbopack: fix side effects optimization bug: #​77640
• Turbopack: add tracing for fetch calls: #​77673
• [test] Update stale snapshots: #​77680
• Turbopack: fix bug in handling of module batches: #​77638
• pack-next: use default --js-build as option instead of --no-js-build: #​77686
• Turbopack: Allow overriding tsconfig path via next-config: #​77563
• Scripts: migrate unpack-next to TypeScript: #​77538
• chore(turbopack): Make TaskInputs use ResolvedVc: #​77700
• Getting Started Docs: Add Metadata and OG images page: #​74077
• Getting Started Docs: Add Upgrade page: #​77717
• Docs IA 2.0: Rename Examples to Guides: #​77722
• build: Update swc_core to v19.0.0: #​77669
• Add Josh to Turbopack team for created-by label: #​77738
• Turbopack: use better ident for worker chunk group: #​77731
• chore(turbo-tasks): Remove redundant ast-grep lint rule: #​77701
• fix(docs): update error type in notFound function description: #​77503
• Update bundler development test manifest: #​77706
• Update Turbopack production test manifest: #​77709
• Turbopack: refactor resolve_url_reference to avoid chunk_path: #​77732
• Update Turbopack development test manifest: #​77708
• Port "app-document" test to e2e: #​77748
• [ci]: skip build-windows job for docs only change: #​77743
• Update bundler production test manifest: #​77707
• chore(turbo-tasks): Audit all remaining uses of Vc in a struct: #​77756
• docs: instrumentation-client follow up: #​77752
• [test] Get rid of unrelated "Invalid hook call" error from tests using styled-components: #​77736
• Turbopack: keep side-effect-full imports: #​76545
• Docs: Recommend inline use server and update examples: #​77770
• Revert "Docs: Recommend inline use server and update examples": #​77771
• doc: useLinkStatus: #​77648
• Update Turbopack production test manifest: #​77767
• Update bundler development test manifest: #​77765
• [docs] fix lint issue in use link status doc: #​77785
• doc: onNavigate: #​77647
• Update bundler production test manifest: #​77764
• doc: useLinkStatus doc follow-up: #​77790
• Update Turbopack development test manifest: #​77766
• [ci] remove needs build-native for lint job: #​77787
• test(examples): update turbopack manifest: #​75092
• [test] fix bad test fixuture for perf test: #​77804
• [test] fix react 19.1 related tests: #​77809
• doc: onNavigate follow-up: #​77805
• fix(turbopack): Apply hygiene if mangling is disabled: #​77815
• Turbopack: omit empty source map when code starts with a new line: #​77734
• [next-lint] test: remove eslint config snapshot testing: #​77818
• Turbopack: avoid deriving css source map path from generated code path: #​77735
• Turbopack: pass asset to chunk_path to allow to use content hash later: #​77772
• Docs IA 2.0: Add Deep Dive section placeholder: #​77724
• Turbopack: use document.currentScript instead of chunk path literal: #​77773
• Turbopack: don't include client-fs assets in NFT: #​77799
• Turbopack: enable content hashing in production: #​77775
• Turbopack: correctly track await import("path") in static analysis: #​77811
• fix(turbopack-cli): Make turbopack_cli::dev::source a persistent (non-transient) task: #​77798
• [test] temporarily disable flaky test for react 18: #​77848
• Update Turbopack production test manifest: #​77872
• Rename process.env.TURBOPACK to process.env.IS_TURBOPACK_TEST for tests: #​77892
• [test] consolidate missing tag dev test: #​77896
• fix(Turbopack): Intermittent CapacityExceeded Error in Persistent Caching: #​77691
• fix: flaky test detection needs to use new turbopack flag: #​77908
• fix: apply Geist fonts correctly on default cna template: #​77237
• Update bundler development test manifest: #​77884
• Update bundler production test manifest: #​77885
• Update Turbopack development test manifest: #​77886
• Update bundler production test manifest: #​77914
• Update bundler development test manifest: #​77915
• fix(turbopack): Apply import_map option of swc_emotion correctly: #​71776
• Turbopack: handle removed routes: #​77890
• build: Update swc_core to v21.0.1: #​77918
• IA 2.0: Review Getting Started Section: #​77921
• test: attempt to de-flake rsc-basic: #​77934
• docs: revert image 15.3 change until live: #​77941
• Turbopack: remove CSS comments when minifying: #​77940

Credits

Huge thanks to @​raunofreiberg, @​huozhi, @​ijjk, @​timneutkens, @​gaojude, @​leerob, @​mezotv, @​bgw, @​samcx, @​ztanner, @​sokra, @​mischnic, @​wbinnssmith, @​kdy1, @​unstubbable, @​ahabhgk, @​ScriptedAlchemy, @​SukkaW, @​wyattjoh, @​eps1lon, @​Amirroid, @​Netail, @​lubieowoce, @​gnoff, @​jackwilson323, @​acdlite, @​sbougerel, @​kevva, @​kasperpeulen, @​Cy-Tek, @​dvoytenko, @​husseinraoouf, @​isBatak, @​iamkd, @​delbaoliveira, @​jantimon, @​padmaia, @​Bernardoow, @​styfle, @​devjiwonchoi, @​JamBalaya56562, and @​Marukome0743 for helping!

v15.2.5

Compare Source

[!NOTE]
This release is backporting bug fixes. It does not include all pending features/changes on canary.

Core Changes

• Update swc_core and use rayon instead of chili (#​77338)
• Update swc_core to v16.6.2 (#​77194)
• Update swc_core to v16.6.0 (#​77155)
• [og] fix vercel og build issue on windows (#​77650)
• clean up useReducer code re dev indicator (#​77354)
• [dev-overlay] ensure stripping overlay bundle in prod build (#​76976)

Credits

Huge thanks to @​huozhi, @​gaojude and @​kdy1 for helping!

v15.2.4

Compare Source

[!NOTE]
This release is backporting bug fixes. It does not include all pending features/changes on canary.

Core Changes

• Match subrequest handling for edge and node (#​77474)
• exclude images and static media from dev origin check (#​77417)
• ensure /__next middleware URLs are included in the origin check (#​77416)
• remove direct ip/port bypass in dev origin check (#​77414)
• switch dev