Core Changes

• [dev-overlay] Use same bundle for Pages and App Router: #80019
• Revert "Revert "[turbopack] Compute Import Traces for Issues"": #80220

Misc Changes

• Revert "[test] fix flaky test of basepath navigation": #80259
• Turbopack: really fix export collection: #80240

Credits

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

Core Changes

• fix: invalid middleware configs should fail the build: #80221
• [dev-overlay] Render /app Dev Overlay with a separate React instance: #79699
• [devtool] display segment explorer as tree view: #80261

Misc Changes

• [turbopack] Replace uses of Value<Pattern> with just Pattern
  : #80134
• [test] Unflake back-forward-cache test: #80250
• perf(turbopack): Decode sourcemap partially: #80177
• [turbopack] Replace uses of Value<ExecutionEnvironment> with just ExecutionEnvironment: #80135
• [turbopack] Replace uses of Value<ContentSourceData> with just ContentSourceData: #80140

Credits

Huge thanks to @lukesandberg, @eps1lon, @kdy1, @ztanner, and @huozhi for helping!

Core Changes

• Replay redirect if RSC parameter is missing: #80180
• [devtool] style the segment explorer as nested view: #80212
• Prerender with streaming metadata during revalidation: #80245

Misc Changes

• [turbopack] Remove Value::new wrapper for ServerContextType parameters: #80133
• Turbopack: fix export collection: #80203
• Docs: Linking and Navigating Page: #80103
• Turbopack Build: docs for unsupported composes handling: #80238
• Turbopack Build: Update manifest for #80238: #80244
• [test] More robust extraction off CSS sources in Flight chunks: #80243

Credits

Huge thanks to @acdlite, @lukesandberg, @mischnic, @delbaoliveira, @timneutkens, @eps1lon, @huozhi, and @unstubbable for helping!

Core Changes

• docs: fix grammar in Code of Conduct section ('them' → 'it') : #80181
• [error-overlay] remove footer message: #80169
• Turbopack: Log persistent cache store time: #80149
• fix(turbopack): Next.js package not found panics in Turbopack: #79572
• [turbopack] Compute Import Traces for Issues: #79351
• Typecheck require() calls: #80056
• Revert "[turbopack] Compute Import Traces for Issues": #80215
• remove unique metadata prop from initial RSC payload #79388

Misc Changes

• Update Rspack production test manifest: #80136
• small typo fix: #80171
• build(turbopack): Update swc_core to v26.4.4: #80161
• [turbopack] Remove uses of Value<ClientContextType> by making ClientContextType a TaskInput: #80127
• Update Turbopack development test manifest: #80196
• Update Rspack production test manifest: #80192
• Update Rspack development test manifest: #80193
• Update Turbopack production test manifest: #80195
• [turbopack] Remove uses of Value<ReferenceType> by making ReferenceType a TaskInput: #80130
• Upgrade rust version to 2025-06-04: #80200
• Fix race condition in types-and-precompiled: #80162
• Turbopack: ignore module ids config in dev: #80204
• Remove forks to switch back to upstream crates: #80198
• Add a test to show that 'use cache' works in generateMetadata: #80172
• [test] Add test for dev rendering indicator: #80205
• docs: add Docker development performance guidance for Mac/Windows: #80002
• [test] fix flaky test of basepath navigation: #80213
• [turbopack] Remove Value::new wrapper for Availabilityinfo parameters: #80132

Credits

Huge thanks to @chdeskur, @nakanoh, @kdy1, @lukesandberg, @devjiwonchoi, @mischnic, @eps1lon, @sokra, @Cy-Tek, @unstubbable, @ztanner, and @huozhi for helping!

Core Changes

• [metadata] fix nonce prop for hoist script: #80174

Misc Changes

• Turbopack Build: Fix metadata dynamic force-dynamic: #80167
• [turbopack] Remove turbo_tasks::value attribute from NativeFunction
  : #80170
• Turbopack: add tool to print DB structure: #80148

Credits

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

Core Changes

• [dev-overlay] Remove indirection in app dev error boundary : #79984
• Docs: preload entries impact on memory consumption: #80098
• [dev-overlay] Move building indicator into Dev Overlay state: #79985
• [metadata] only render one metadata outlet: #80146
• Add a regions property to the Functions Config Manifest file: #80104

Misc Changes

• chore(turbopack): Use label for large benchmark: #80114
• [test] add custom timeout for start server: #80160
• Turbopack: Fix sst filter handling and order for meta files: #80147

Credits

Huge thanks to @eps1lon, @icyJoseph, @kdy1, @huozhi, @agadzik, and @sokra for helping!

Core Changes

• [dev-overlay] Remove unnecessary code from /pages dev error boundary: #79983
• Turbopack Build: Implement helpful error for missing sass package: #80155
• [global-not-found] fix shared css imports not being picked: #80151
• Add experimental flag for RSC request validation: #80157

Credits

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

Core Changes

• [dynamicIO] Document client component remediations for sync IO: #79787
• [dynamicIO] prioritize preprocessing RSC rows when prerendering: #80125
• [dev-overlay] Remove unused onError in /pages: #79982
• Remove unused vendored server-inserted-metadata module: #80143
• Webpack Build: Use name-contenthash instead of name-chunkhash for dynamic imports: #80153

Misc Changes

• chore(turbopack): Remove unused dependencies reported by cargo-shear: #80121
• [turbopack] Eliminate many calls to into and from and cell involving RcStr: #80076
• fix(turbo-persistence): Atomically mark old versioned directories for deletion before deleting them: #80082
• Turbopack: Improve errors when opening SST files: #80106

Credits

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

Core Changes

• [dev-overlay] Parse stacks in reducer not during dispatch: #79788
• Remove obsolete @ts-expect-error: #80065
• [dev-tools] Navigation header replaces close button: #80097
• [dev-overlay] Inject get*Stack implementation: #79789
• [dev-overlay] Fix dark‐mode styling for <option> in Preferences dropdowns: #80025
• Use relative sources in require() instead of next/dist/ if possible: #80054
• [dev-overlay] Inject isRecoverableError implementation: #80003
• [devtool] fix explorer flag consuming and style: #80110
• [dev-tools] add restart dev server button to error overlay: #80060
• [dev-tools] add restart dev server button on dev-tools indicator preferences: #80072
• [chore] remove legacy useEarlyImport flag: #80112
• [testmode] Fix types of wrapRequestHandler: #80055
• Extend bot list with googleweblight, Storebot-Google, Google-Inspecti…: #77728
• [dev-overlay] Inject getSquashedHydrationErrorDetails implementation: #80046
• [dev-tools] better description for restart server button: #80118
• [dev-tools] style: preferences section title: #80120
• [metadata] refactor to remove async metadata: #78495

Misc Changes

• docs: Manual calls to action should we wrapped in startTransition: #80101
• [dev-tools] Re-focus previous item after closing sub menu: #80099
• perf(turbopack/rcstr): Precompute hash for equality bailout: #78943
• perf(turbopack/rcstr): Use precomputed hash: #80074
• Docs: Improve Turbopack webpack loader documentation: #79523
• fix(turbopack): Allow google font fetch errors to propagate when in production: #79999
• chore(turbopack): Fix building local crates with --all-features: #80117
• fix React 18 test failures: #80119

Credits

Huge thanks to @icyJoseph, @eps1lon, @raunofreiberg, @teamleaderleo, @kdy1, @huozhi, @devjiwonchoi, @Cy-Tek, @vitaliemiron, @bgw, and @ztanner for helping!

Core Changes

• Update font data: #80036
• Fix defunct ESLint overrides: #80053
• [devtools] Add an endpoint to poll for server status: #80005
• [dynamicIO] Only report client sync IO errors if they are above a Suspense boundary: #80026

Misc Changes

• Turbopack: add print_cache_item_size feature flag to print cache size per task: #80043
• Turbopack: remove verbose output: #80044
• docs: Reference to statically imported images: #80048
• Docs: Drop innacurate override information for dynamicParams: #79966
• chore: Use same function references in useReportWebVitals examples: #79963
• refactor(turbopack): Do not use Result for Rope#read: #80004
• Turbopack Build: Fix next-font test: #80049
• chore(ci): Disable flaky turbopack benchmarks: #80058
• Turbopack Build: Implement locale:false middleware matcher: #80057
• [turbopack] Simplify the definition of AssetIdent: #79805
• Update Rspack production test manifest: #80038
• Update Turbopack production test manifest: #80040
• Update Rspack development test manifest: #80039
• chore(turbopack): Update rust-sourcemap to v9.2.2: #80066
• chore(turbopack): Remove Lightningcss prefix for CSS types: #80067
• build(turbopack): Update swc_core to v26.3.3: #80059
• perf(turbopack): Use owned instance of Code for minify(): #79991
• Update Turbopack development test manifest: #80041

Credits

Huge thanks to @sokra, @icyJoseph, @kdy1, @timneutkens, @lukesandberg, @eps1lon, @bgw, and @gnoff for helping!