v15.2.1-canary.0

Core Changes

• Unify Link and Form prefetching: #76184

Credits

Huge thanks to @acdlite for helping!

v15.2.0

Core Changes

• Fix unstable_allowDynamic when used with pnpm: #73732
• [dynamicIO] use new heuristic to track whether server render is dynamic: #73751
• Fix receiveExpiredTags not always called: #73759
• error-overlay: Rename "Error" to "Issue": #72817
• remove redundant segment collection call: #73773
• Metadata resolvers can be fetched synchronously: #73771
• Turbopack: migrate client references to single-graph-traversal: #73322
• next-codemod: update gitignore file for parity for yarn recommendations: #71963
• feat: error code: #73332
• Detach next-error-code-swc-plugin from workspace: #73806
• [CI] Prominent error message for check_error_codes: #73807
• [Segment Cache] Add PPR header to segment prefetch: #73756
• fix: path escaping issue on windows: #73843
• Rename variables in LayoutRouter for clarity: #73826
• [Segment Cache] Skip prefetched segments on server: #73626
• [Segment Cache] No data on tree prefetch if no PPR: #73767
• Remove segmentPath from RSC payload: #73827
• build: better error if fetching AMP validator fails: #73851
• Escape the '.' in '.json' when making static data routes.: #73850
• fix(next@15): use the asset prefix when loading a CSS in App Router: #72095
• Exclude .test. files from using error code plugin: #73868
• Refactor telemetry API: #73865
• Add additional error classes and error codes: #73862
• refactor: collectAppPageSegments: #73908
• cleanup unnecessary map in dev server: #73745
• Retry manifest file loading only in dev mode: #73900
• Turbopack: ignore empty NEXT_TURBOPACK_TRACING var: #73903
• Ignore RSC fetch errors after hard navigation: #73975
• Fix error code check in windows: #73981
• Separate viewport and metadata in rsc and cache: #73867
• Add feature flag for new dev overlay: #73977
• Restore RSC fetch error handling after navigating back: #73985
• refactor: make locales array immutable: #74037
• fix: skip rendering dynamic root segment routes: #74039
• refactor: cache lowercasing all the locales: #74038
• Add SRI support for Node.js Runtime : #73891
• Separate bots detection utils: #74000
• docs: remove a duplicated word in redirect code comment: #74043
• examples: update gitignore files for parity for yarn recommendations: #71956
• chore: update turbopack document path in the warning message: #72597
• Clean up react-dev-overlay before fork: #74016
• chore(next/image): improve imgopt api bypass detection for unsupported images: #73909
• [Segment Cache] Add CacheStatus.Empty: #73667
• chore: move static paths utils into own folder: #73928
• Delete unused GroupedStackFrames.tsx: #74028
• [Segment Cache] Move cache key creation to client : #73853
• feat: added partial shell generation using root params: #73816
• feat: added error when there's missing root params in generateStaticParams: #73933
• Remove parentRendered argument: #73877
• Generate per-segment responses for any static page: #73945
• feat: added fallback route params to prerender manifest: #74004
• refactor(turbopack): Make various types directly or indirectly included in State<T> types into OperationValues and/or NonLocalValues: #74008
• Fork react-dev-overlay for new UI: #74017
• fix: added fallback source route to prerender manifest: #74052
• Add storybook for UI testing: #74032
• [Segment Cache] Support for non-PPR projects/pages: #73960
• exclude .stories. and .test. files from taskfile watch and error plugin: #74064
• Upgrade React from 7283a213-20241206 to 372ec00c-20241209: #73749
• fix: aria attribute typo for error overlay: #74074
• fix: set x-deployment-id to every middleware prefetch request: #71193
• Add middleware handler for error code telemetry: #74088
• Create ErrorOverlay component: #74073
• fix(typed-routes): Fix route type fallback: #73271
• Rename root-layout-missing-tags-error.tsx to pascal case: #74089
• Turbopack: next/dynamic use transitions instead of AST analysis: #73627
• [Turbopack] fix root and project path usages in a monorepo: #73552
• support bun.lock as package manager lockfile: #74056
• Stop sourcemapping function names: #74085
• Move ErrorIndicator to separate file: #74090
• Upgrade React from 372ec00c-20241209 to 518d06d2-20241219: #74155
• used shared worker for lint & typecheck steps: #74154
• chore(turbopack): Ignore no-vc-struct lint in trybuild proc macro tests: #74110
• Use provided waitUntil for pending revalidates: #74164
• Port ErrorPagination: #74097
• Port LeftIcon RightIcon from ErrorPagination: #74098
• Port ToolButtonsGroup: #74099
• [Turbopack] fix import.meta.url in monorepo: #72612
• refactor: rename the react client error callbacks module: #74192
• Use ErrorOverlayLayout in Errors component: #74107
• refactor: remove internal queries, move to request metadata: #74100
• Fix accessing headers in progressively enhanced form actions: #74196
• Use Geist font in Dev Overlay: #74160
• [metadata] Align prefetch head type with head: #74161
• refactor: error boundary rendering in app-render: #74259
• [metadata] Merge the metadata resolve apis into one api: #74191
• [DevOverlay] fix: restore pagination style: #74296
• fix: update broken links in config-shared.d.ts: #74122
• fix: fix typos in errors.json & create-component-tree.tsx: #74471
• Safely retrieve router, improve page reload logic: #74209
• docs: bump year: #74475
• [DevOverlay] Remove Dialog Banner: #74464
• [DevOverlay] Add color palette script: #74465
• Fix: Preserve intentional percent encoding in search param for client nav: #74473
• [DevOverlay] Implement New Overlay Layout with Bottom Stacks: #74466
• [DevOverlay] Add error overlay footer and feedback: #74472
• [DevOverlay] Remove temporary header children: #74490
• fix: server functions x-forwarded-host possible multiple values: #73701
• [DevOverlay] Pass footer message from error containers: #74493
• feat(rsc): allow host or forwarded: #74199
• [DevOverlay] Adjust border style for header and footer: #74480
• feat(next/image): add support for images.qualities in next.config: #74257
• Upgrade React from 518d06d2-20241219 to 3b009b4c-20250102: #74492
• fix: add node internals stack frames to ignored list: #73698
• chore: break calls to forEach into for loops: #74523
• [DevOverlay] Add error message: #74541
• [DevOverlay] Add error type label: #74543
• feat: connect error rating buttons to telemetry API: #74496
• [metadata] Move metadata rendering adjacent to page component: #74262
• Delete set-cache-busting-search-param.test.ts: #74561
• fix: enhance a11y, prevent double firing in error rating: #74563
• fix: add aria-hidden to error overlay voting icons: #74568
• Update font data: #74572
• Upgrade React from 3b009b4c-20250102 to 3ce77d55-20250106: #74557
• [metadata] Change the array head to single node in flight data: #74299
• [DevOverlay] Add Toolbar: #74555
• restore deleted comment in next-app-loader: #74597
• Turbopack dev: Remove client to server websocket ping event: #74584
• Fix prerender tags when notFound is called: #74577
• fix: add prerender abort errors to unstable rethrow: #74556
• Upgrade React from 3ce77d55-20250106 to 7b402084-20250107: #74599
• fix: handle optional catchall parameters properly when deployed: #74562
• refactor: generic dev build indicator: #74615
• ensure custom cache handlers are preloaded: #74622
• feat: dev build indicator for App Router: #74618
• fix fetch lock not being consistently released: #74623
• Ensure global cache handlers are used properly: #74626
• Ensure custom Suspense boundaries in layouts resolve if they contain the page: #74552
• test: exclude the ts testing files from tsconfig during local dev in nextjs repo: #74647
• Remove unused dependencyFactory plugin code: #74661
• test: do not log the changes for local dev tsconfig: #74674
• [metadata] initial support of streaming metadata: #74619
• Remove PPR feature check from Segment Cache client: #74669
• [Segment Cache] Add act-inspired internal router testing helper: #74668
• [Segment Cache] Background segment revalidation: #74057
• Upgrade React from 7b402084-20250107 to 42687267-20250108: #74649
• Indicate boolean value for configured experimental features on startup: #74691
• Implement encryption key into turbopack as hash salt: #72933
• Show numerical values for configured experimental features: #74692
• Upgrade React from 42687267-20250108 to 74ea0c73-20250109: #74693
• feat: DevToolsIndicator: #74679
• Fix presentation when onerror receives an event without error: #74643
• refactor: move the global client error code: #74699
• fix: ts language server rule metadata should allow null: #74704
• [DevTools] create error state for indicator: #74717
• [DevOverlay] Add Basic Stories for Error Containers: #74697
• Add experimental flag for View Transitions: #74659
• [DevOverlay] Floating Header and Bottom Stacks: #74581
• [DevOverlay] Add Pagination: #74583
• Fix @vercel/og license SPDX expression: #74745
• [DevOverlay] Add Next.js version staleness indicator: #74601
• Write errors.json fully formatted: #74753
• [DevOverlay] Fix style details and correctly pass version info: #74606
• [DevOverlay] Decouple Dialog component from Error Overlay: #74638
• [DevOverlay] Apply Turbopack Styling: #74636
• [DevOverlay] Add Call Stack: #74658
• [DevOverlay] Add Runtime Error CodeFrame: #74682
• Do not warn during build for supported modules in the Edge runtime: #74752
• Ensure metadata doesn't break scroll-to-top on navigation: #74748
• [Segment Cache] Fix stale time unit conversion: #74759
• [metadata] add option of configuring ua of async metadata: #74594
• SingleModuleGraph: yield edge weights during traversal: #74620
• refactor(turbopack/next-api): Implement NonLocalValue for TracedDiGraph and SingleModuleGraph: #74506
• Always display version indicator: #74774
• Update font data: #74777
• Upgrade React from 74ea0c73-20250109 to `0560...

v15.2.0-canary.77

Core Changes

• [dev-overlay]: remove background on custom select: #76526
• [dev-overlay]: tweak system icon: #76527
• fix: remove initial-scale=1 from viewport when set to false: #76397
• [dev-overlay] control scrollbar by selected theme: #76553
• [dev-overlay] misc: Ignored-listed -> Ignore-listed: #76554
• [dev-overlay] add disabled backround-color for toolbar buttons: #76555
• [dev-overlay]: update docs for devIndicators & outdated screenshot: #76463
• [dev-overlay] improve color contrast for terminal: #76525
• [dev-overlay]: use proper labels for preferences: #76558
• Handle duplex automatically for NextRequest: #76531
• [Segment Cache] Implement scroll-to-new-page: #76170
• Do not pass an empty string tag into receiveExpiredTags: #76561
• [Segment Cache] Re-prefetch links on navigation: #76060
• [dev-overlay] fix: svg icon ids are not unique: #76566
• [dev-overlay] change button to lowercase except leading letter: #76565
• Remove rewrite query params from request URL when deployed to Vercel: #76548
• exclude AppDevOverlayErrorBoundary from prod build: #76568
• [dev-overlay] rephrase docs button title as link to related docs: #76571
• [dev-overlay]: allow disabled state to be dismissable: #76572

Example Changes

• Updated remove-console example to utilize the app router.: #76543
• Fix createclient: #76567

Misc Changes

• Move known failed test back into failed set in Turbopack manifest: #76542
• Run React 18 tests for automated update PRs: #76544
• Skip globally installing turbo CLI: #76532
• docs(errors): update suppressHydrationWarning section: #76521

Credits

Huge thanks to @ztanner, @unstubbable, @artemszelenov, @huozhi, @devjiwonchoi, @ijjk, @acdlite, @gaojude, @samcx, @PapatMayuri, and @saltcod for helping!

v15.2.0-canary.76

Core Changes

• [dev-overlay] Add indicator when sourcemapping fails: #76516
• refactor: clean up forked Form implementations: #76495
• [dev-overlay]: fix invalid font in info panels: #76519
• [dev-overlay] upgrade storybook@8.6.0: #76511
• [dev-overlay]: add preference panel: #76522

Misc Changes

• docs: fix typo in route-segment-config: #74403
• Docs: Fix minor typo in api-reference/functions/cookies.mdx: #76376
• Correcting typo: #76440
• Update error-recovery test snapshots for alternative bundler [3/n]: #76446
• refactor(CI): Assign tests to groups round-robin instead of sequentially when we don't have timings: #76462
• Update Turbopack development test manifest: #76471
• Update Turbopack production test manifest: #76472

Credits

Huge thanks to @bratvanov, @hedgeday, @cassian-goode, @eps1lon, @wbinnssmith, @bgw, @lubieowoce, @ztanner, and @devjiwonchoi for helping!

v15.2.0-canary.75

Core Changes

• Upgrade React from 25677265-20250224 to 22e39ea7-20250225: #76481
• [app i18n]: warn about i18n configuration deprecation in app router: #76346
• [dev-overlay] style: improve error label background color contrast: #76490
• Fork Form implementation for Pages and App Router: #76498
• Webpack: handle file:// urls when finding sourcemaps: #76443
• Ensure middleware layer is bundled: #76466
• [dev-overlay] do not force hide scrollbar: #76504
• [Segment Cache] Hard nav when root layout changes: #76163
• [metadata] clarify the default list behavior: #76450
• [dev-overlay]: generalize ISR status functions for pages/app: #76457
• [dev-overlay]: wire up ISR status for pages router: #76458
• [dev-overlay]: fix inline docs to show correct info for given router: #76461
• [dev-overlay] add title for the dev indicator menu items: #76510
• [dev-overlay] sync suffix N of --size-N with px value of base font 16px: #76384
• Add event for webpack plugin customization: #76477
• [dev-overlay] use rem for sizes and px for spacings: #76385
• [dev-overlay] hide dev indicator for server session or 1 day: #76430
• [dev-overlay] customize scrollbar styling: #76509

Example Changes

• Update with urql example: #76485

Misc Changes

• fix: workaround for TS bug in Object.defineProperty: #75944
• [docs]: add --api option information: #76493
• refactor(CI): Extend areweturboyet integration test jobs for all bundlers: #76361
• [repo] misc: rename .cursorignore to .cursorindexingignore: #76494
• [ci]: PPR tests should run on development/acceptance-app: #76505
• chore(CI): Only update areweturboyet datasets for other bundlers from canary branch results: #76449

Credits

Huge thanks to @lubieowoce, @ztanner, @devjiwonchoi, @bgw, @acdlite, @wbinnssmith, @ijjk, @huozhi, @timneutkens, and @PapatMayuri for helping!

v15.2.0-canary.74

Misc Changes

• refactor(CI): Convert daily turbopack (areweturboyet) integration tests into reusable workflows: #76251

Credits

Huge thanks to @bgw for helping!

v15.2.0-canary.73

Core Changes

• [Testing] Update middleware/next-config tests to include search params: #76354
• Add node middleware handling for turbopack: #76360

Misc Changes

• [test] fix client navigation error count in react 18: #76442
• docs: add note to language and filename section: #74239
• docs: fix duplicate "scroll" parameter in Link component documentation: #74820

Credits

Huge thanks to @wentsul, @ijjk, @huozhi, @JamBalaya56562, and @loopy-lim for helping!

v15.2.0-canary.72

Core Changes

• Flight loader: use normalModule.type to determine module type: #76338
• update type for next/dynamic loading option to accept ReactNode: #76402
• [dev-overlay] Link to section explaining opt-in error feedback: #76424
• [dev-overlay] polish component stack mask css: #76434
• [dev-overlay] Disable error feedback in UI if NEXT_TELEMETRY_DISABLED is set: #76423
• [metadata] promote streaming metadata configs to stable: #76344
• [metadata] update metadat docs for streaming metadata: #76282
• [app] Send errors not handled by explicit error boundaries through reportError: #76101
• Upgrade React from 662957cc-20250221 to 25677265-20250224: #76437

Misc Changes

• fix(turbopack): Fix pure span check in advanced tree shaking: #76406
• Turbopack: fix graph chunk groups: #76383
• toDisplayRedbox() matcher: trim line endings: #76404
• Turbopack: rename reverse topological to postorder topological, fix async referenced modules: #76429
• Turbopack: handle removed assets similar to non-existing assets: #76420
• Turbopack: fix duplicate modules due to import context: #76432
• typechecking inputs/outputs in action transform tests: #75935
• [test] Use new Redbox matchers in app/ ReactRefreshLogBox: #76431

Credits

Huge thanks to @wbinnssmith, @kdy1, @sokra, @stefanprobst, @eps1lon, @huozhi, and @lubieowoce for helping!

v15.2.0-canary.71

Core Changes

• [dev-overlay] fix: bottom stack count: #76375
• [next] use tsconfig.build.json for production build: #76373
• [metadata] only blocking render for html bots in ppr pages: #76379
• [metadata] enable streaming metadata by default: #76221
• [dev-overlay] toggle overlay when clicking N issues section: #76398
• [dev-overlay]: hiding devtools shouldn't hide errors: #76399
• [dev-overlay] docs: add readme: #76396
• Add test to assert on current build output tree view: #76342

Misc Changes

• Turbopack: ChunkGroupType for graph entries: #76235
• Turbopack: accept ChunkGroup in chunking context: #76242
• [test] Use new Redbox matchers in pages/ error-recovery test: #76348
• [test] Use new Redbox matchers in pages/ ReactRefreshLogBox-builtins: #76392
• [test] Use new Redbox matchers in pages/ ReactRefreshLogBox: #76391
• [test] Use new Redbox matchers in app/ ReactRefreshLogBox-builtins: #76394
• docs: update building.md to contain descriptive build process: #76393

Credits

Huge thanks to @mischnic, @devjiwonchoi, @eps1lon, @huozhi, @ztanner, and @unstubbable for helping!

v15.2.0-canary.70

Core Changes

• [dev-overlay] do not attach hydration info to non hydration errors: #76349
• [dev-overlay] adjust Next.js logo stroke color during dev builds: #76351
• [dev-overlay] fix: restore the missing Cursor editor case in dev-overlay : #76371
• [dev-overlay] remove the experiment config for overlay: #76356
• [dev-overlay] minify css: #76370
• [dev-overlay] remove unused base styles: #76372
• [dev-overlay] use css var for <a> tag focus ring: #76374
• [dev-overlay] fix: fallback to local machine's Geist Font if applicable: #76377

Misc Changes

• test: update snapshot for component stack: #76359
• Update error-recovery test snapshots for alternative bundler: #76299

Credits

Huge thanks to @huozhi, @gaojude, @Knoa0405, @devjiwonchoi, and @wbinnssmith for helping!