v15.6.0-canary.38

Core Changes

• Revert "Revert "Revert "Add a --webpack flag and default --turbopack to true (#84216)""": #84389

Misc Changes

• Turbopack: trace module.createRequire: #84335

Credits

Huge thanks to @mischnic and @lukesandberg for helping!

v15.6.0-canary.37

Core Changes

• Revert "Revert "Add a --webpack flag and default --turbopack to true (#84216)"": #84351
• [Breaking] Remove AMP codemod: #84356
• [Breaking] Remove deprecated built-in AMP: #84312
• auto-enable clientParamParsing and clientSegmentCache w/ cacheComponents: #84250
• [mcp] get server action tool: #84382

Example Changes

• examples: Remove AMP example: #84355

Misc Changes

• docs: Remove AMP docs: #84357
• docs: Type helpers don't need to be imported: #84265
• Turbopack: Add docs for debugIds option: #84375
• Remove references to size metrics in next build from our docs: #83823
• Bump to swc v42: #83477
• Turbopack: skip invalidating a task on cell/output change when the dependency is outdated: #84376

Credits

Huge thanks to @devjiwonchoi, @icyJoseph, @timneutkens, @lukesandberg, @mischnic, @ztanner, @sokra, and @huozhi for helping!

v15.6.0-canary.36

Core Changes

• [cna] Add reactCompiler option: #82251
• Turbopack: remove canary version check for turbopackPersistentCachingForDev: #84277
• [turbopack] Add support for debug_ids: #84319

Misc Changes

• Turbopack: only replace edge dynamic calls in dev: #84354
• [turbopack] Remove a bunch of dead code from the source map implementation: #84318
• Turbopack: prevent duplicate NFT modules: #84369

Credits

Huge thanks to @mischnic, @lukesandberg, @poteto, and @sokra for helping!

v15.6.0-canary.35

Core Changes

• Turbopack: add separate turbopackPersistentCachingForBuild/ForDev flags: #84215
• Revert "Add a --webpack flag and default --turbopack to true (#84216)": #84348
• Upgrade React from df38ac9a-20250926 to d15d7fd7-20250929: #84347
• Mark React Compiler integration as stable: #84220

Example Changes

• Use Array.from to avoid @ts-ignore when copying i18n.locales: #82148

Misc Changes

• [test] Stop downloading unused test browsers when generating PR stats: #84329
• docs: remove repeated to: #84325
• Turbopack: Use more robust logic for absolute and percent-encoded URLs in source maps received from loaders: #84255

Credits

Huge thanks to @eps1lon, @sokra, @lukesandberg, @Anshuman71, @bgw, and @RobertFent for helping!

v15.6.0-canary.34

Core Changes

• Turbopack: only write merged manifests when they have been changed: #84261

Misc Changes

• [test] Ignore pnpm update notifier: #84328

Credits

Huge thanks to @sokra and @eps1lon for helping!

v15.6.0-canary.33

Core Changes

• Move config.turbopack.moduleIds to config.experimental.turbopackModuleIds: #84230
• Show invalid default export errors during prerendering: #84242
• fix: make sure caller exists in babel preset: #84154
• [mcp] allow to enable mcp server through env var: #84278
• fix(metadata): make formatDetection respect true/false properly: #83924
• Upgrade React from b0c1dc01-20250925 to df38ac9a-20250926: #84276
• Add a --webpack flag and default --turbopack to true: #84216
• fix: Update URL resolution logic to handle search parameters on root path /?foo=bar: #78262
• [Breaking] Remove deprecated sync access to Dynamic APIs: #84179

Misc Changes

• Turbopack: Scope with work queue: #84225
• [test] Make Undefined default export an e2e test suite: #84240
• [turbopack] Conditionally create pages router data endpoints.: #84194
• Turbopack: parallel connect children: #84173
• Turbopack: count turbo_tasks::run as foreground tasks to avoid being idle: #84245
• Turbopack: make persistent caching log line more clear: #84262
• Turbopack: make tracing nicer: #84263
• docs:Small improvement on the contribution guide for clarity: #84200
• Turbopack: Remove not-very-useful "Finished writing to disk in" log line: #84244
• Turbopack: follow up changes from parallel children: #84219
• [turbopack] Simplify take_issues and peek issues: #84199
• Update Rspack development test manifest: #84260
• Update Rspack production test manifest: #84259

Credits

Huge thanks to @devjiwonchoi, @sokra, @unstubbable, @lukesandberg, @FelipeChicaiza, @bgw, @kevva, @huozhi, @m1abdullahh, @vercel-release-bot, and @F7b5 for helping!

v15.6.0-canary.32

Core Changes

• Move config.turbopack.moduleIds to config.experimental.turbopackModuleIds: #84230
• Show invalid default export errors during prerendering: #84242
• fix: make sure caller exists in babel preset: #84154
• [mcp] allow to enable mcp server through env var: #84278
• fix(metadata): make formatDetection respect true/false properly: #83924
• Upgrade React from b0c1dc01-20250925 to df38ac9a-20250926: #84276
• Add a --webpack flag and default --turbopack to true: #84216
• fix: Update URL resolution logic to handle search parameters on root path /?foo=bar: #78262
• [Breaking] Remove deprecated sync access to Dynamic APIs: #84179

Misc Changes

• Turbopack: Scope with work queue: #84225
• [test] Make Undefined default export an e2e test suite: #84240
• [turbopack] Conditionally create pages router data endpoints.: #84194
• Turbopack: parallel connect children: #84173
• Turbopack: count turbo_tasks::run as foreground tasks to avoid being idle: #84245
• Turbopack: make persistent caching log line more clear: #84262
• Turbopack: make tracing nicer: #84263
• docs:Small improvement on the contribution guide for clarity: #84200
• Turbopack: Remove not-very-useful "Finished writing to disk in" log line: #84244
• Turbopack: follow up changes from parallel children: #84219
• [turbopack] Simplify take_issues and peek issues: #84199
• Update Rspack development test manifest: #84260
• Update Rspack production test manifest: #84259

Credits

Huge thanks to @devjiwonchoi, @sokra, @unstubbable, @lukesandberg, @FelipeChicaiza, @bgw, @kevva, @huozhi, @m1abdullahh, @vercel-release-bot, and @F7b5 for helping!

v15.6.0-canary.31

Core Changes

• Feat: get_page_metadata MCP endpoint: #84211
• feat: capture logs into logging file during development: #84183
• babel-loader: Avoid calling expensive isReactCompilerRequired check when we must run Babel anyways: #84103
• [mcp] expose logging: #84226

Misc Changes

• Turbopack: trace fs-extra calls: #84246
• [test] Overhaul Undefined default export test suite: #84235

Credits

Huge thanks to @mischnic, @gaojude, @huozhi, @unstubbable, and @bgw for helping!

v15.6.0-canary.30

Core Changes

• Add internal environment variable for enabling React Compiler: #84176
• [devtools] Disable React's default Transition indicator: #84202
• Upgrade React from e2332183-20250924 to b0c1dc01-20250925: #84248

Example Changes

• docs: update Dockerfile to use node:lts-alpine instead of node:18-alpine: #84229

Misc Changes

• Turbopack: increase retry duration, reduce busy looping when there is other work: #84171
• Turbopack: Try to avoid block_in_place in scope: #84172
• [turbopack] Remove some bitmap clones: #84193
• Turbopack: lazier manifests, part deux: #84191
• Turbopack: avoid panic on updating output when a task was cancelled: #84214
• docs: nav_title for long unbroken words: #84233
• Turbopack: Use RawValue for mappings inside SourceMapJson: #84208
• Update Rspack development test manifest: #84218
• Turbopack: fix NFT of readFileSync of relative path: #84155
• Turbopack: improve references benchmark: #84223
• Update Rspack production test manifest: #84217
• Turbopack: drop ASTs when only tracing: #84185
• docs: Include more detailed instructions on excluding from common AV solutions, including macOS Gatekeeper: #84206

Credits

Huge thanks to @sokra, @lukesandberg, @eps1lon, @mischnic, @Samii2383, @icyJoseph, @bgw, and @vercel-release-bot for helping!

v15.6.0-canary.29

Core Changes

• Feat: get_errors MCP endpoint: #84161

Misc Changes

• Revert "[turbopack] Set liveness of exports based on assignment ana…: #84207

Credits

Huge thanks to @gaojude and @ztanner for helping!