v15.1.6

Note

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

Core Changes

• fix: don't memory-leak promises passed to waitUntil (#75041)
• backport: fix prerender issue with intercepting routes + generateStaticParams (#75170)

Credits

Huge thanks to @lubieowoce and @ztanner for helping!

v15.2.0-canary.19

Core Changes

• [DevOverlay] Decouple Error Overlay with DevTools Indicator: #74999
• [DevOverlay] Open Error Overlay when DevTools Indicator clicked: #75025
• fix: be more defensive in useMergedRef: #75088
• [Dev Badge] Focus states and fluid transitioning between states: #75141
• polish indicator loading behaviour for new dev overlay: #75149
• clean unused stop: #75156
• [Segment Cache] Remove segment access tokens: #75157
• [Segment Cache] Minimize special root key handling: #75159
• [next:dev] fix: console error conflicting public file: #75140
• [Turbopack] allow to disable source maps: #75136
• Allow disabling HTTP request logs in dev server: #74349
• [metadata] Fix streaming metadata was missing in ssr: #75155

Misc Changes

• refactor(turbopack): Only perform strongly consistent reads/resolves on VcOperation: #75016
• fix: remove unnecessary parentheses in draft mode API: #75153
• perf(turbo-tasks): Turn on local_resolution feature by default: #75051
• [Turbopack] allocation improvements for SingleModuleGraph: #75145
• [Turbopack] pass sourceMap flag to webpack loaders and postcss: #75144

Credits

Huge thanks to @devjiwonchoi, @lubieowoce, @raunofreiberg, @bgw, @gaojude, @sokra, @acdlite, @mohsen1, and @huozhi for helping!

v15.2.0-canary.18

Misc Changes

• Turbopack: don't create span for parallel chunking type: #75094

Credits

Huge thanks to @mischnic for helping!

v15.2.0-canary.17

Core Changes

• Display global-error along dev overlay during development: #75101

Misc Changes

• [Turbopack] Production Chunking: #75010
• Include CI runner labels in Turborepo hashes: #75099
• [Turbopack] try to avoid too small chunks size when optimizing for production: #75048
• perf(turbopack): Reduce size of EffectArg: #74973
• build: Update swc_core to v10.5.0: #75098
• perf(turbopack): Use u32 for the total node count: #75100
• test: add dynamic api usage test case for streaming metadata: #75109
• Turbopack: optimize NftJsonAsset: #75105
• [Turbopack] Low hanging fixes and improvement on module graph: #75106

Credits

Huge thanks to @sokra, @unstubbable, @kdy1, @huozhi, and @mischnic for helping!

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!