v15.5.1-canary.37

Core Changes

• Development: Make 'ready in' 195ms faster: #83628

Credits

Huge thanks to @timneutkens for helping!

v15.5.1-canary.36

Core Changes

• Exit next dev with a non-zero code when next.config.js is invalid: #83602
• Development: Only load getStaticInfoIncludingLayouts when it's needed: #83555
• Development: Only load HotReloaderWebpack when it is used: #83609
• Fix logic bug in sortByPageExts: #83610
• Update PPR cases with adapter config: #83595
• Development: Don't load Babel when it's not used: #83619
• Development: Don't load hot-reloader-webpack when using Turbopack: #83621
• Development: Only require loadJsConfig when using webpack: #83623
• Upgrade React from b9a04536-20250904 to 6b70072c-20250909: #83627

Example Changes

• examples(with-supabase): fix import statement in tutorial: #83605

Misc Changes

• Enable more tests for Turbopack: #83589
• Enable more tests for Turbopack, II: #83600
• chore: remove $ from cli cmd: #83603
• Tests: Move build-indicator test to test/development: #83591
• docs: rewrite+usePathname+prerender hydration error mitigation: #83462

Credits

Huge thanks to @mischnic, @icyJoseph, @timneutkens, @tomhmoses, @unstubbable, and @ijjk for helping!

v15.5.1-canary.35

Core Changes

• Update types and more test coverage for adapters: #82919
• fix: devtools initial position should be from next config: #83571

Misc Changes

• [turbopack] Simplify up and dowcasts: #83456
• Turbopack: remove unused transforms: #83567
• Turbopack: emit JSON.parse only for more than 10kb: #83483
• cna: fix typo: #83121
• Fix build-indicator test flaking: #83585
• Turbopack: remove GlobalTypeofs AST pass: #83479
• Turbopack: don't define process.cwd() in node_modules: #83452

Credits

Huge thanks to @lukesandberg, @mischnic, @roottool, @timneutkens, @ijjk, and @devjiwonchoi for helping!

v15.5.1-canary.34

Core Changes

• Turbopack: Remove 20ms overhead on bootup: #83554
• fix: transpile-config should await import before return: #83566
• Make hasNecessaryDependencies sync: #83564

Misc Changes

• Update Rspack development test manifest: #83551
• metadata: align turbopack loader with js loader: #83559
• Docs: Add authentication note for external/internal image sources: #83469

Credits

Huge thanks to @vercel-release-bot, @huozhi, @pontasan, @timneutkens, and @devjiwonchoi for helping!

v15.5.1-canary.33

Core Changes

• feat: use Node.js native TS resolver for next.config.ts: #83240
• Disable React debug channel by default: #83552

Example Changes

• Fix/msw-issue-68521: #83482

Credits

Huge thanks to @HamadUllah16, @devjiwonchoi, and @unstubbable for helping!

v15.5.1-canary.32

Misc Changes

• Update Rspack production test manifest: #83512

Credits

Huge thanks to @vercel-release-bot for helping!

v15.5.1-canary.31

Misc Changes

• fix: route handlers should validate invalid exports: #83500

Credits

Huge thanks to @ztanner for helping!

v15.5.1-canary.30

Core Changes

• Use React's debug channel to transport debug info via WebSocket connection: #82748

Misc Changes

• Update Rspack production test manifest: #83475

Credits

Huge thanks to @unstubbable and @vercel-release-bot for helping!

v15.5.1-canary.29

Core Changes

• [metadata] not add suffix to sitemap.xml in group routes: #83486
• [devtools] Use useEffectEvent instead of ignoring exhaustive deps: #83236
• [metadata] refactor metadata sitemap loader code: #83443
• Include prerender interrupted error in unstable_rethrow: #83463

Misc Changes

• [turbopack] Attempt #2 at making rust-analyzer happy with our macros: #83461
• [turbopack] RFC: Serialize turbopack objects as u16s instead of fully qualified symbol names: #83193
• [turbopack] enable the signal feature of nix: #83473
• Turbopack: Don't resolve tsconfig relative to file: #83484

Credits

Huge thanks to @lukesandberg, @huozhi, @timneutkens, @eps1lon, and @gnoff for helping!

v15.5.1-canary.28

Core Changes

• [codemod] return origin src in viewport mod if not changed: #83435
• feat(next/image): introduce preload prop and deprecated priority prop: #83351
• [metadata] use generateStaticParams for getImageMetadata: #83374
• fix: Include CSP nonce in next/dynamic preload: #81999
• [Segment Cache] use loading from dynamic response for unprefetched navigations: #83305
• Upgrade React from 3302d1f7-20250903 to b9a04536-20250904: #83446

Misc Changes

• test: add prerender snapshot for metadata-dynamic-routes test: #83432
• Docs: Fix broken getImageProps sample code: #83436
• auto-enable errors.json merge driver: #83420
• [turbopack] Improve handling of symlink resolution errors in track_glob and read_glob: #83357
• Update Rspack development test manifest: #83407
• Update Rspack production test manifest: #83408
• [turbopack] Add an execution test for the behavior when a module throws an error: #83451
• [turbopack] Don't execute inventory_submit in rust analyzer: #83447
• Turbopack: Remove unused turbopack-node rendering code: #83414

Credits

Huge thanks to @huozhi, @styfle, @HondaYt, @lubieowoce, @TrevorBurnham, @lukesandberg, @vercel-release-bot, and @mischnic for helping!