v15.2.0-canary.26

Core Changes

• Upgrade React from 9b62ee71-20250122 to ae9017ce-20250122: #75233
• Update React types: #75245
• docs: opengraph-image files work with the node.js runtime: #75274
• Upgrade vercel/og: #75247
• Turbopack: migrate global module ids to single-graph: #73752
• Emit build error when useCache is enabled and Edge runtime is used: #75279
• Fix use server diagnostics for type exports: #74256
• Turbopack: don't hardcode edge-instrumentation.js: #75289
• Upgrade React from ae9017ce-20250122 to de1eaa26-20250124: #75286
• Update bundler for pre-bundling runtime: #75294

Misc Changes

• misc: add Rauno to CI approved: #75269
• [Turbopack] include async loaders in chunking instead of separating it: #75052
• perf(turbopack): Use Pass API for styled-jsx SWC plugin: #75271
• perf(turbopack): Reduce needless allocations for SWC plugins: #75275
• Add test fixtures demonstrating export statement validation bugs: #75277
• Fix export statement validations for app router pages: #75278
• change turbopack-cli to new backend: #75242
• chore(turbo-tasks): Remove argument resolution from backends, only allow local-task-based argument resolution: #75214
• refactor(turbo-tasks): Merge dynamic_call/native_call with dynamic_this_call/native_this_call: #75253
• chore(turbo-tasks): Clean up consistency/untracked APIs around local outputs and cells: #75171
• fix(turbo-tasks): Implement is_transient on OperationVc: #75291
• [Turbopack] box InnerStorage to avoid overallocation: #75287
• [Turbopack] Inline commonly used storages: #75284
• perf(turbo-tasks): Add a 'local' option to #[turbo_tasks::function(..)]: #75259
• [Turbopack] avoid some allocations: #75285

Credits

Huge thanks to @devjiwonchoi, @eps1lon, @sokra, @kdy1, @leerob, @unstubbable, @huozhi, @mischnic, @jrandolf, @bgw, and @ijjk for helping!

v15.2.0-canary.25

Core Changes

• Introduce standalone experimental.useCache flag: #75240
• [metadata] keep blocking metadata rendered in head: #75227

Credits

Huge thanks to @unstubbable and @huozhi for helping!

v15.2.0-canary.24

Core Changes

• [DevOverlay] Enable reactOwnerStack when newDevOverlay is enabled: #75199
• fix: typeof msg should compare to object: #75221
• [DevOverlay] Align old and new overlay: #74935

Misc Changes

• refactor(turbopack): Remove ReadRawVcFuture.turbo_task: #75217
• test: Move should not cause error when removing loading.js to flaky manifest: #75239
• test: skip dev/deploy testing for test/e2e/app-dir/segment-cache/revalidation/segment-cache-revalidation.test.ts: #75249

Credits

Huge thanks to @devjiwonchoi, @kdy1, and @HQidea for helping!

v15.2.0-canary.23

Core Changes

• Remove internal_disableSyncDynamicAPIWarnings flag: #75231
• router.prefetch should not trigger a React update: #75238

Misc Changes

• refactor(turbo-tasks): Use Return Position Impl Traits (RPIT) to reimplement GraphTraversal: #74896
• chore(turbo-tasks): Delete non_local_return support from #[turbo_tasks::function]: #75209
• perf(turbopack): Update SWC plugins (styled-jsx, emotion): #75236

Credits

Huge thanks to @bgw, @eps1lon, @acdlite, and @kdy1 for helping!

v15.2.0-canary.22

Core Changes

• Error handling for hanging promises in "use cache" closures: #74750
• Fix source mapping of generated cache wrapper calls: #74987
• [Turbopack] use new backend by default: #72434
• eslint: allow ts extensions for config: #75222
• Split entrypoint/route handling into separate dev and prod versions: #75169
• [Segment Cache] Prioritize route trees over segments: #75213

Misc Changes

• perf(turbopack): Use Cow::into_owned instead of .to_string(): #75216
• [Turbopack] Memory improvements: #75210
• docs: Update robots for generateMetadata spec: #75229

Credits

Huge thanks to @unstubbable, @sokra, @kdy1, @devjiwonchoi, @wbinnssmith, @acdlite, and @leerob for helping!

v15.2.0-canary.21

Core Changes

• fix: Merge link header from middleware with the ones from React: #73431
• Restore and enhance error handling for hanging inputs in "use cache": #74652

Misc Changes

• Remove endpoint.write_to_disk() in favor of standardized endpoint.output(): #75059

Credits

Huge thanks to @amannn, @wbinnssmith, and @unstubbable for helping!

v15.2.0-canary.20

Core Changes

• fix(turbopack/napi): Flush optional task cache hit statistics upon completion of build: #75122
• add hostname to default error boundary message: #75151
• [Segment Cache] Predictable fallback param encoding: #75166
• misc: remove authors section in the readme: #75184
• Track use cache usage: #75007
• Upgrade React from 5b51a2b9-20250116 to 9b62ee71-20250122: #75187
• fix after export in next-types-plugin: #75190

Misc Changes

• Update 06-data-fetching-and-streaming.mdx (Removed duplicate word): #74810
• add test case for intercepting route + catchall + generateStaticParams: #75167
• [Turbopack] remove verbose new backend tracing: #75165
• optimize read matches to reduce FileSystemPath calls: #75164
• chore(turbo-tasks): Remove the ability to opt-out of NonLocalValue for VcValueType and VcValueTrait: #75053
• chore(turbopack): Mark ResolvedVc::resolve as deprecated to prevent resolving an already-resolved ResolvedVc: #75168
• Turbopack: don't generate CSS for Node.js: #75117
• chore(tests): Remove linguist-generated git attribute from test snapshot data/fixtures: #75194
• chore(github): remove Developer Experience area: #75198
• [Turbopack] fix invalidation and counting with collectibles: #75195
• chore(github): add CSS area/label: #75201

Credits

Huge thanks to @skushagra, @bgw, @ztanner, @acdlite, @sokra, @feedthejim, @gaojude, @mischnic, and @samcx for helping!

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!