v15.0.0-rc.0

Core Changes

• fix(next): global not-found not working on multi-root layouts: #63053
• chore(next): add keywords on package.json: #64173
• Fix DynamicServerError not being thrown in fetch: #64511
• fix: lib/helpers/install.ts to better support pnpm and properly respect root argument: #64418
• fix(next): Metadata.openGraph values not resolving basic values when type is set: #63620
• disable production chunking in dev: #64488
• update turbopack: #64501
• Turbopack: Allow client components to be imported in app routes: #64520
• refactor: remove always truthy flag: #64522
• Turbopack: don’t show long internal stack traces on build errors: #64427
• next/script: Correctly apply async and defer props: #52939
• chore(next/font): update @capsizecss/metrics package: #64528
• feat: add information that revalidate interval is in seconds: #64229
• Typo "Minifer" in config.ts: #64359
• Enhance types for Node and Edge envionments: #64454
• feat: Add a validation for postcss with useLightningcss: #64379
• fix HMR for cases where chunking changes: #64367
• perf: improve Pages Router server rendering performance: #64461
• Fix cjs client components tree-shaking: #64558
• fix refresh behavior for discarded actions: #64532
• fix: filter out middleware requests in logging: #64549
• chore: remove unused rust dependencies: #62176
• fix(next-swc): correctly set wasm fallback for known target triples: #64567
• memoize layout router context: #64575
• fix incorrect refresh request when basePath is set: #64589
• fix TypeError edge-case for parallel slots rendered multiple times: #64271
• Fix ASL bundling for dynamic css: #64451
• Revert "fix(next): global not-found not working on multi-root layouts": #64601
• chore(test): run related E2E deploy tests on PRs: #63763
• Improve top level await coverage: #64508
• Upgrade typescript to 5.3: #64043
• add pathname normalizer for actions: #64592
• Fix experimental/testmode by removing console.log: #64670
• Don't output .test.ts files in next/font: #63472
• Fix reporting when performance.measure doesn't exist (Edge): #64669
• Reduce amount of data passed to collectBuildTraces: #59665
• fix(next-server): 'quiet' setting delegate for custom server: #64512
• Revert "chore(test): run related E2E deploy tests on PRs": #64682
• update turbopack: #64686
• Fix: resolve mixed re-exports module as cjs: #64681
• Revert "fix TypeError edge-case for parallel slots rendered multiple times": #64690
• Fix typo: 'serverComponentsExtenalPackages' should be 'serverComponentsExternalPackages': #64705
• prevent erroneous route interception during lazy fetch: #64692
• Add @appsignal/nodejs to the external packages list: #64503
• fix root page revalidation when redirecting in a server action: #64730
• Clean-up fetch metrics tracking: #64746
• [actions] Enforce body limit using Transform stream: #64694
• Turbopack: Don’t show stack traces for internal modules: #64228
• Reapply "chore(test): run related E2E deploy tests on PRs" (#64682): #64712
• fix(fetch-cache): fix typo: #64786
• fix: remove traceparent from cachekey should not remove traceparent from original object: #64727
• fix interception route rewrite regex not supporting hyphenated segments: #64805
• Disable ncc cache instead of cache cleaning: #64804
• Move next-swc Turborepo config to packages/next-swc: #64789
• build: Update swc_core to v0.90.33: #64553
• Enable loading source maps for Next Server and React: #64527
• fix: mixing namespace import and named import client components: #64809
• fext(next): extend next.config for mdxRs support options: #64801
• skip test_e2e_deploy_related when triggered from a fork: #64893
• fix(fetch-cache): fix additional typo, add type & data validation: #64799
• feat(next-core): support parsing matcher config object: #64678
• Fix mixed exports in server component with barrel optimization: #64894
• fix: improve tsconfig extends checks: #61413
• Fix next/image usage in mdx: #64875
• fix dynamic route interception not working when deployed with middleware: #64923
• feat(turbopack): Handle fragments in requests: #64232
• feat(turbopack): Check for duplicate parallel routes: #64181
• Speed up createNext test suite isolation: #64909
• fix(rewrites): support external rewrite destination: #64943
• Ensure edge prerender-manifest is minimal: #64946
• remove special-cased prefetch kind in dev mode: #64941
• feat: support import attributes: #59480
• NextJS App router: add isolated-vm to server-external-packages.json: #64749
• Add next experimental-test command: #64352
• Revert "feat: support import attributes": #65001
• NODE_OPTIONS updates: #65006
• Update React from 14898b6a9 to c3048aab4: #64798
• initialize ALS with cookies in middleware: #65008
• feat(next/image)!: remove squoosh in favor of sharp as optional dependency: #63321
• fix: Workaround acorn bug/version issue by using SWC: #65021
• build: Update @swc/core to v1.5.0: #65022
• Ensure escaped string are parsed in NODE_OPTIONS: #65046
• chore(fetch-cache): remove zod from fetch cache: #65079
• support breadcrumb style catch-all parallel routes: #65063
• Improve initial setup with new App Router TypeScript project: #64826
• Add experimental trace file field: #65071
• Fix playwright config merging for webServer property: #65090
• chore(logging): Disable info logging of critters in production: #62776
• [unstable_cache] Don't track dynamic fetches in an unstable_cache callback: #65010
• fix(page-static-info): refine warning message to emit once: #65091
• update redirect handling on forwarded action requests: #65097
• Tracing: allow opt-in flag to send build traces to url: #65019
• Turbopack: Allow client components from foreign code in app routes: #64751
• fix node.js module warning in middleware: #65112
• Fix: strip _rsc query for client navigation rsc request: #65084
• fix unhandled runtime error when notFound() triggered in generateMetadata w/ parallel routes: #65102
• Use vercel deployment url for metadataBase fallbacks: #65089
• Fix next/dynamic with babel and src dir: #65177
• update turbopack: #65191
• Fix crypto import in edge runtime with Turbopack: #65171
• Resolve global next Webpack alias last: #65123
• Add oslo, @node-rs/argon2, and @node-rs/bcrypt to external packages: #65204
• [trace] Reduce the size of .next/trace files: #65101
• Remove extra suspense boundary for default next/dynamic: #64716
• Only apply metadata manifest credentials for preview deployment: #64940
• fix(next): add missing browser.major type: #65185
• Turbopack: rename source map prefix: #64965
• fix(next/image): detect react@19 for fetchPriority prop: #65235
• Use POST for invokeIpcMethod: #65238
• fix redirect to url with semicolon: #65165
• Provide non-dynamic segments to catch-all parallel routes: #65233
• Fix an issue parsing catchall params: #65277
• Enable preloading entries by default: #65289
• Trace uploader: add worker spans to allowed events: #65255
• Update font data: #65301
• Update revalidateTag to batch tags in one request: #65296
• Revert "Remove extra suspense boundary for default next/dynamic": #65309
• Emit polyfill-nomodule.js into the build manifest polyfillFiles: #65223
• Remove broken #[turbo_tasks::value(transparent)] attributes: #65336
• Delete dead concatenate_output_assets function: #65337
• Upgrade Turbopack: #65320
• Pages router: Use attribute-based head children reconciler when strictNextHead is enabled: #65408
• Revert "Implement Turbopack trace server bindings": #65419
• use correct not-found component when triggered from a parallel route: #65343
• Implement Turbopack trace server bindings: #65410
• fix(next/image): bypass icns images: #65414
• [PPR] Enable incremental adoption: #63847
• fix: replace deprecated/removed functions in eslint-plugin-next: #64251
• docs: update revalidatePath & fix cache debug logic: #65365
• fix(next-core): mark turbopack embed fs to be internals: #65420
• fix(next/image): add missing svg test and refactor missing types: #65345
• build(edge): extract buildId into environment: #64521
• Revert "build(edge): extract buildId into environment": #65425
• fix(next/image): set max url length to 3072: #65457
• Support React 19 in App and Pages router: #65058
• Promote and rename server bundling options serverComponentsExternalPackages and bundlePagesExternals: #65421
• add experimental flag to allow forcing NODE_ENV=development in builds: #65463
• Support esm externals in app router: #65041
• fix: lazy load sharp: #65484
• make sure children is first in loader tree to fix head css bug on client navigation: #65279
• Re-land build(edge): extract buildId into environment: #65426
• improve versioned content map: #65466
• update turbopack: #65503
• Remove ineffective webpack rules and unused app-page context modules: #65321
• add page name to crashes: #65504
• Bump styled-jsx to 5.1.3: #65485
• Preload all chunks for next/dynamic in SSR: #65486
• fix!: add sharp timeout of 10 seconds: #65517
• Turbopack: new graph aggregation: #65206
• feat(next): revise server component error message: #65468
• chore: update prettier to 3.2.5: #65092
• Revert "Remove ineffective webpack rules and unused app-page context modules": #65558
• Remove auto appending xml extension to dynamic sitemap routes: #65507
• Remove rsc esm client module extra exports: #65519
• Handle nonce on Next.js injected script/link tags: #65508
• Fix multi-zone test by removing dependency list: #65589
• remove next-action header when following a redirect: #65615
• Remove @next/font resolving for font loaders: #65601
• remove legacy deprecated warnings: #65579
• feat(turbopack): add support for bundlePagesRouterDependencies: #65520
• fix(next-swc): load wasm fallback if native bindings fail to load: #65623
• fix(next-swc): correct path interop to filepath for wasm: #65633
• Add ...

v14.3.0-canary.79

Core Changes

• fix: ensure prefetch data routes are always added when app has ppr enabled: #66102
• [Breaking] Disable automatic fetch caching: #66004
• Update React from 81c5ff2e04 to f994737d14: #66093
• [ppr] Remove canary requirement: #66112
• [ppr] Data route fixes: #66109
• [unstable_after] always use 'waitUntil' from '@next/request-context' if available: #66119
• Don't fail the build if @types/ packages appear to be missing: #66127
• Stabilize swrDelta config: #66108
• Revert "Don't fail the build if @types/ packages appear to be missing": #66130

Misc Changes

• docs: add missing /: #66105
• Add release candidate handling to start release: #66107
• Docs: Next.js 15 updates: #65603
• Fix validate externals docs

Credits

Huge thanks to @wyattjoh, @ijjk, @eps1lon, @tokkiyaa, @lubieowoce, and @delbaoliveira for helping!

v14.3.0-canary.78

Core Changes

• fix: ensure prefetch data routes are always added when app has ppr enabled: #66102
• [Breaking] Disable automatic fetch caching: #66004
• Update React from 81c5ff2e04 to f994737d14: #66093

Credits

Huge thanks to @wyattjoh, @ijjk, and @eps1lon for helping!

v14.3.0-canary.77

Core Changes

• Update React from 04b058868c to 81c5ff2e04 : #65869
• implement unstable_rethrow: #65831
• chore(next/image): remove unused output parameter: #66083
• next-swc-napi: Enable "plugin" feature by default: #66006
• [turbopack] Use updated RawOutput API: #65300
• Skip setting to fetch cache when not modified: #66055
• [Memory] Add option to reduce memory usage caused by duplicate strings in webpack-sources: #66003
• Ensure metadata routes dont skip static optimization: #66097
• [unstable_after] fix occasional dev-mode crash in edge runtime pages: #66099

Misc Changes

• Tweak flakey metadata error tests: #66060
• Fix cloudflare transform images url: #66076
• React sync: Reduce manual tasks: #66095
• React sync: Handle React PRs landed via ghstack: #66069
• [Memory] Add docs for new experimental.webpackMemoryOptimizations option: #66096

Credits

Huge thanks to @ijjk, @eps1lon, @todor0v, @ztanner, @styfle, @bgw, @mknichel, and @lubieowoce for helping!

v14.3.0-canary.76

Core Changes

• Add dedicated client entry for Turbopack builds: #65824

Credits

Huge thanks to @wbinnssmith for helping!

v14.3.0-canary.75

Core Changes

• [Breaking] disable client router cache for page segments: #66039

Example Changes

• Update Google Analytics example for App Router: #66021

Misc Changes

• Improve sync-react changelog generator: #66051

Credits

Huge thanks to @qqww08, @ztanner, and @eps1lon for helping!

v14.3.0-canary.74

Core Changes

• [Breaking] Disable automatic static generation for route handlers: #65825
• Fix router.refresh missing canonical url override: #65999
• Fix typo in JSDoc of ppr flag of next.config.js: #66028
• Revert webpack bundling layer changes for middleware/pages: #66049
• Upgrade lightningcss, disable grid prefixing: #65986

Misc Changes

• Update Turbopack development test manifest: #66002
• docs: Update Route Handlers docs for dynamic: #66010
• Update Turbopack production test manifest: #66007
• Include base commit in changes included by a React sync: #65868
• add missing "prerenderEarlyExit: false" to dynamic-data test
• add pre-push hook to guard against accidental pushes directly to canary: #66030
• Add missing 'prerenderEarlyExit: false' in tests: #66032
• chore(docs): remove suggestion of manually installing sharp: #66034
• Update Turbopack development test manifest: #66044
• Fix swc test path from node_modules: #66047
• Update create-next-app template CSS: #66043
• Update lightningcss to 1.0.0-alpha.56: #66046
• ci(workflow): skip building next-swc with latest turbopack: #66048

Credits

Huge thanks to @ijjk, @gaojude, @leerob, @eps1lon, @lubieowoce, @Nayeem-XTREME, @styfle, @ypessoa, @wbinnssmith, @kwonoj, and @timneutkens for helping!

v14.3.0-canary.73

Core Changes

• fix(next/image): prefer sharp defaults, use mozjpeg for JPEG: #65846
• Update font data: #65961
• unstable_after: support nested unstable_after calls: #65950
• Fix revalidateTimings route for catchall index route: #65843
• fix(next): initial prefetch cache not set properly with different search params: #65977
• Add additional log to experimental ppr flag in next.config.js: #65944
• Change default of prerenderEarlyExit to true: #65830
• short-circuit OPTIONS requests to pages: #65295
• Turbopack: Implement next/font/local with BeforeResolvePlugin and show custom error message: #65870

Misc Changes

• docs: clarify gSSP docs for runtime: #65962
• fix(docs): update styled components option: #65718
• feat: Add option to enable Turbopack with create-next-app: #65926
• chore(github-workflow): move issues, prs, features to #next-info channel: #65991

Credits

Huge thanks to @lovell, @leerob, @lubieowoce, @nsams, @devjiwonchoi, @Nayeem-XTREME, @JamBalaya56562, @ijjk, @ztanner, @Arindam200, @samcx, and @wbinnssmith for helping!

v14.3.0-canary.72

Core Changes

• experimental: unstable_after: #65038
• Docs: Replace "twitter.com" to "x.com": #65917

Example Changes

• chore: Bump react-modal to 3.16.2 in with-router-as-modal example: #65841

Misc Changes

• Update create-next-app template: #65803
• Fix send-trace-to-jaeger boolean span values: #65920
• Mention Renaming of useFormState: #65934

Credits

Huge thanks to @lubieowoce, @ypessoa, @ryohidaka, @icyJoseph, @timneutkens, and @Arinji2 for helping!

v14.3.0-canary.70

Misc Changes

• fix: race condition in CLI output in react-compiler test: #65909

Credits

Huge thanks to @lubieowoce for helping!