v15.4.2-canary.12

Core Changes

• Upgrade React from dffacc7b-20250717 to e9638c33-20250721: #81899
• chore(devtools): sync todos to linear: #81901
• Introduce 'use cache: private': #81816
• chore(deps): update browserslist: #81851
• Remove web-server from edge-ssr-app: #81389

Misc Changes

• Remove experimental.strictNextHead: #81882
• Remove some random commas: #81875
• Turbopack: Add cache for reqwest clients: #81742
• Update Rspack development test manifest: #81878
• Update Rspack production test manifest: #81879

Credits

Huge thanks to @RobPruzan, @eps1lon, @unstubbable, @MidnightDesign, @bgw, @stephenliang, @vercel-release-bot, and @ijjk for helping!

v15.4.2-canary.11

Core Changes

• [sourcemaps] Try VM for retrieving source maps first: #81869
• [devtools] save user config inside .next/cache: #81807
• Server: Remove unused code: #81886
• refactor: encapsulate content type within RenderResult: #81861
• refactor: handle null RenderResult responses gracefully: #81895

Misc Changes

• Turbopack: fix unhelpful error message when deleting folder fails: #81718

Credits

Huge thanks to @eps1lon, @devjiwonchoi, @timneutkens, @wyattjoh, and @sokra for helping!

v15.4.2-canary.10

Core Changes

• Turbopack: fix dist dir on Windows: #81758
• fix: remove boundary sentinel from RSC responses: #81857

Credits

Huge thanks to @mischnic and @wyattjoh for helping!

v15.4.2

Note

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

Core Changes

• pages router metadata bugs with React 19 (#81733)
• [metadata] replace for initial body icon case (#81688)
• Ensure custom NextServer config is honored (#81681)

Credits

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

v15.4.2-canary.9

Core Changes

• [devtool] migrate css reset to global.css: #81783
• [dev-tools] Robust shortcut detection: #81756
• [segment explorer] hide for pages router: #81813
• [devtool] fix scrollbar styling: #81814
• fix(ppr): ensure fallback route params trigger dynamic resume: #81812
• [devtools] restart server pending state: #80858

Misc Changes

• [turbopack] use require to load chunks in our node runtime: #81738

Credits

Huge thanks to @huozhi, @raunofreiberg, @lukesandberg, @wyattjoh, and @devjiwonchoi for helping!

v15.4.2-canary.8

Core Changes

• [devtool] move font styling to global.css: #81782
• [devtool] copy decoded info of error details: #81735
• fix(build): add sourcePage context for PPR dynamic route lambda creation: #81781
• refactor: rename experimental.dynamicIO to experimental.cacheComponents: #81562
• Properly handle hanging promise rejections during prerendering: #81754
• Upgrade React from d85ec5f5-20250716 to dffacc7b-20250717: #81767
• Refactor: Get rid of overly generic getExpectedRequestStore function: #81791

Misc Changes

• Update Rspack production test manifest: #81746
• Update Rspack development test manifest: #81747
• Turbopack: Split DynamicEqHash trait into smaller traits in a separate re-usable crate: #81741
• [turbopack] Reuse shared Promise for loaded chunks: #81755
• Add VSCode tasks to show TypeScript compilation errors in problems view: #81799
• Turbopack: remove unneeded manifests for API routes: #81536

Credits

Huge thanks to @vercel-release-bot, @huozhi, @bgw, @wyattjoh, @unstubbable, @eps1lon, and @mischnic for helping!

v15.4.2-canary.7

Core Changes

• bugfix: static resources staleTime should be renewed once refetched: #81771

Misc Changes

• fix(turbopack) Adjust the way catchall routes are handled when a more specific parallel route exists: #81634
• Add trigger for v0 sync workflow: #81645

Credits

Huge thanks to @ztanner, @Cy-Tek, and @padmaia for helping!

v15.4.2-canary.6

Core Changes

• [devtool] enable segment explorer by default: #81737
• [turbopack] Stop exposing globals from Turbopack runtime: #81727
• Remove unnecessary await: #81761
• [chore] bump zod to latest v3: #81757
• feat(turbopack): Log anonymized internal error (panic) information to telemetry: #81272
• fix: revert client segment route changes for sub shell generation: #81740

Misc Changes

• Turbopack: consistently name runtime chunk: #81769
• Turbopack: include more details in panic: #81773

Credits

Huge thanks to @huozhi, @eps1lon, @mischnic, @bgw, and @wyattjoh for helping!

v15.4.2-canary.5

Core Changes

• fix: pages router metadata bugs with React 19: #81733
• Improve error handling for headers/cookies/draftMode in 'use cache': #81716
• [devtool] fix duplicate rendered indicator on server: #81729

Misc Changes

• chore: update username from 'nebrelbug' to 'bgub': #81734

Credits

Huge thanks to @bgub, @ztanner, @unstubbable, and @huozhi for helping!

v15.4.2-canary.4

Core Changes

• [Segment Cache] Support dynamic head prefetching: #81677
• [sourcemaps] Consistent cursor columns: #81375
• fix: revert client segment route changes for sub shell generation: #81731

Misc Changes

• Fix: createRouterAct "reject" config: #81720
• Update Rspack development test manifest: #81702
• Update Rspack production test manifest: #81701
• Add an e2e test for the css serving issue: #81683

Credits

Huge thanks to @acdlite, @vercel-release-bot, @lukesandberg, @eps1lon, and @wyattjoh for helping!