v15.2.0-canary.16

Core Changes

• [DevOverlay] Polish new Error Overlay badge: #74975
• [DevOverlay]: hook up issue click handlers in NextLogo: #75069
• error when output: export is used with intercepting routes: #75058

Misc Changes

• perf(turbo-tasks): Use the type information we already have for all ResolvedVc casts, expose synchronous versions of functions: #75055
• docs: update Next.js 15 versions in upgrade guide: #74960

Credits

Huge thanks to @bgw, @leerob, @raunofreiberg, and @ztanner for helping!

v15.2.0-canary.15

Core Changes

• fix: don't memory-leak promises passed to waitUntil: #75041
• refactor: include new option for including prefixes: #75015
• Disable colormin feature from cssnano: #53393
• types: improve types in app-index: #75045
• feature(error): capture ssr error in overlay during dev: #74983

Misc Changes

• Turbopack: don't search for layout segments in routes: #73847
• Turbopack: resolve arguments to EsmAssetReference::new: #75040
• perf(turbo-tasks): Optionally schedule ResolveNative/ResolveTrait tasks as local tasks: #69126
• hopefully fix infinite recursion in optimize: #75043
• [Turbopack] implement chunking based on the module graph: #74979
• [Turbopack] avoid crashing on e.g. .DS_Store: #75050

Credits

Huge thanks to @mischnic, @lubieowoce, @bgw, @sokra, @wyattjoh, @RobinMalfait, and @huozhi for helping!

v15.2.0-canary.14

Core Changes

• Fix dhat support for turbo dev: #67166
• Fix missing revalidate with notFound(): #75009
• fix: always ensure element before set to weakmap: #75012
• Fix ping event being sent unintentionally for Pages Router with Turbopack: #75030

Misc Changes

• refactor(turbopack/next-api): Make VcArc use OperationVc: #74479
• Add next-custom-transforms tests to verify source maps: #75005
• build: Update swc_core to v10.3.0: #75018
• put dirty task tracing behind a feature flag: #75022
• Turbopack: fix layout segment optimization: #75026
• fix layout segment optimization: #75035

Credits

Huge thanks to @bgw, @unstubbable, @kdy1, @sokra, @ijjk, @huozhi, and @timneutkens for helping!

v15.1.5

Note

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

Core Changes

• Fix missing revalidate with notFound() (#75009)
• fix: when metadatabase is set we should not warn (#74840)
• Fix @vercel/og license SPDX expression (#74745)
• fix: ts language server rule metadata should allow null (#74704)
• fix: eslint rule of using img in metadata routes (#74864)
• Fix presentation when onerror receives an event without error (#74643)
• fix fetch lock not being consistently released #74623 (#75028)

Credits

Huge thanks to @ijjk, @huozhi, @matmannion and @ztanner for helping!

v15.2.0-canary.13

Core Changes

• Turbopack: chunk_group_multiple: #74859
• [DevOverlay] Fix floating header invisble on small screen: #74886
• rest errors queue after passing to handler: #74982
• [DevOverlay] Keep pagination on Build Error: #74905
• [Segment Cache] Evict client cache on revalidate: #74874
• Upgrade React from b158439a-20250115 to 5b51a2b9-20250116: #74993
• [DevOverlay] Gather Feedback per Error: #74908
• Fix dev server ignores ENOENT error when loading page: #65213
• refactor: updated route regexp handling to simplify: #74996
• [DevOverlay] Rename file names to kebab: #75000

Example Changes

• Update readme for with-mux-video: #74966

Misc Changes

• perf(turbopack): Reduce size of ConstantValue: #74965
• Turbopack: singular EcmascriptClientReferenceModule: #74946
• refactor(turbopack): Merge Atom and JsWord variant of ConstantString: #74967
• Turbopack: add server actions loader to module graph: #74951
• perf(turbopack): Box ConstantValue::Regex: #74968
• perf(turbopack): Reduce size of Effect: #74969
• test: temporarily disable after deploy test: #74989
• test: add turbopack hmr flaky test: #74995
• Turbopack error logging: check NEXT_TEST_CI to use verbose behavior: #75001
• Turbopack: compute chunk group info: #74947
• build: Update swc_core to v10.2.5: #75002
• Re-enable app-dir logging test: #75003
• chore(github): use Issue Types: #75006
• chore(github): remove documentation label from area dropdown: #75008

Credits

Huge thanks to @mischnic, @kdy1, @devjiwonchoi, @lubieowoce, @huozhi, @acdlite, @lukahartwig, @jsanford8, @wyattjoh, @wbinnssmith, @gaojude, and @samcx for helping!

v15.2.0-canary.12

Core Changes

• Ensure client reference manifest is traced for global not found page: #74919
• Polish error feedback row: #74880
• fix: static indicator for new overlay decoupled from appIsrStatus: #74933
• [test] Avoid hydration errors in react-compiler tests: #74928
• feat: write the segment path data out from the incremental cache: #74892
• Track dynamic IO feature usage: #74942
• Upgrade React from f0edf41e-20250115 to b158439a-20250115: #74936

Misc Changes

• fix persisent caching restore bug: #74917
• Fix missing await of params when metadata with an image file pt2: #74193
• Turbopack: capture all references in module graph: #74873
• Add reference library that supports React Server and uses React Compiler: #74923
• [Turbopack] refactor to pass ModuleGraph to chunk_group: #74937
• [Turbopack] fix unemit collectible: #74932
• refactor(turbo-tasks): Convert local Vcs to non-local Vcs when returning from task functions: #74714
• perf(turbo-tasks): Add a synchronous try_sidecast method to ResolvedVc: #74844

Credits

Huge thanks to @sokra, @gadcam, @unstubbable, @gaojude, @mischnic, @eps1lon, @wyattjoh, and @bgw for helping!

v15.2.0-canary.11

Core Changes

• Skip client reference manifests for static metadata route handlers: #74876
• Upgrade React from b3a95caf-20250113 to f0edf41e-20250115: #74890
• fix: moved down segment path handling after cache headers are set: #74893
• [Turbopack] improve task optimization: #74837

Misc Changes

• ci: ensure fnm is installed in build_reusable: #74891
• feat(turbopack): Add a compile-time feature to turbopack to enable tokio-console support: #74675
• [Turbopack] fix task optimization by removing children count: #74907
• fix(turbopack-swc-utils): Don't panic if issues aren't emitted, use #[must_use] annotation: #74906
• Create synchronous snapshots of recursive AvailableModuleInfo struct: #74894

Credits

Huge thanks to @ztanner, @unstubbable, @wyattjoh, @bgw, @sokra, and @wbinnssmith for helping!

v15.2.0-canary.9

Core Changes

• Add partial support for "use cache" in metadata route handlers: #74835
• [DevOverlay] Hydration Error Code Frame: #74822
• fix: when metadatabase is set we should not warn: #74840
• [DevOverlay] Sync Terminal component with CodeFrame for Build Error: #74831
• feat: animated dev build/render indicator: #74833
• Fix mojibake in server action inputs (fixes #74843): #74845
• [DevOverlay] Add Turbopack story for Error Containers: #74834
• Add pagination SEO link tags: #74737
• chore: fix local development warnings inside next monorepo: #74863
• fix: eslint rule of using img in metadata routes: #74864
• Upgrade React from cabd8a0e-20250113 to b3a95caf-20250113: #74868
• [Segment Cache] Support <Link prefetch={true}>: #74172
• Remove unnecessary re render on link reveal: #74670
• [Segment Cache] Cancel prefetch on viewport exit: #74671
• [Segment Cache] Prioritize hovered links: #74672
• Refine NextLogo Accessibility and Styling: #74869

Example Changes

• examples: add StackBlitz preview to README.md: #73546
• examples: improve DX while copying command to create new project: #73463
• examples: fix with-zones repository name in the deploy link: #74852

Misc Changes

• docs: fix typos in 08-mutating-data.mdx: #74856
• [Turbopack] add count method to storage: #74830
• [Turbopack] add tracing to task execution: #74770
• [Turbopack] improve task aggregation update: #74771
• [Turbopack] add active_counter to keep tasks active: #74772
• Update CI config for Windows runner: #74850

Credits

Huge thanks to @JamBalaya56562, @unstubbable, @devjiwonchoi, @huozhi, @sokra, @gaojude, @vexcat, @Zach-Jaensch, @ijjk, and @acdlite for helping!

v15.2.0-canary.10

Core Changes

• Disable failed scroll restoration warning: #74875
• Polish UI for dev indicator popover: #74872
• [DevTools] Add CMD + . keyboard shortcut to show/hide: #74878
• [DevOverlay] use buttons for interactive indicator row options: #74887
• [DevOverlay] close popover/overlay on Esc: #74889

Example Changes

• with-mux-video: recommend environment variables instead of secrets: #74879
• with-mux-video: updates for next 15 compat: #74881

Misc Changes

• fix(turbopack): Fix tree shaking with import * as R: #74725

Credits

Huge thanks to @eps1lon, @kdy1, @gaojude, @decepulis, @devjiwonchoi, and @ztanner for helping!

v15.2.0-canary.8

Core Changes

• feat: added rewrite headers after user-supplied rewrites: #74776

Misc Changes

• refactor(turbopack-core): Use ResolvedVc in ContextCondition: #74711
• refactor(turbopack/next-core): Use ResolvedVc in PackagesGlobs: #74712
• docs: mention special case for trailing slash: #74839
• refactor(turbopack): Remove last known (non-test) usages of unresolved vcs in turbo_tasks::value (!!!): #74713

Credits

Huge thanks to @bgw, @huozhi, and @wyattjoh for helping!