v15.3.1

Note

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

Core Changes

• chore: Backport SWC-based RC optimization (#78260)
• fix: bump [email protected] (#78164)

Credits

Huge thanks to @kdy1 and @styfle for helping!

v15.3.1-canary.13

Core Changes

• @next/mdx: Use stable turbopack config options: #78261
• Upgrade React from b04254fd-20250415 to 4a36d3ea-20250416: #78297

Misc Changes

• Turbopack: fix duplicate unsupported edge import modules: #78236
• Turbopack: Include Next.js version in panic handler report: #78263

Credits

Huge thanks to @wbinnssmith and @mischnic for helping!

v15.3.1-canary.12

Core Changes

• fix: alternate bundler support for dropping client pages in AMP: #77601
• [errors] refactor default global-error into a separate file: #78182
• [metadata] render streaming metadata on the top level: #77620
• [metadata] skip head cache in default slot: #78206

Misc Changes

• Docs IA 2.0: Move Production Checklist under Guides: #78240
• Docs: Fix nav item lettercasing for multi-zones: #78250
• [docs] fix function signature of og image: #78277
• Turbopack: dedupe additional traced references: #78241
• Update Turbopack development test manifest: #78274
• [test] Improve coverage for fetch errors in Edge runtime: #78257
• Update Turbopack production test manifest: #78273

Credits

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

v15.3.1-canary.11

Core Changes

• Preserve slashes when custom URL schemes are used in redirects: #78176
• ignore-list published sources if they have a sourcemap: #78242
• Upgrade React from 1d6c8168-20250411 to 39cad7af-20250411: #78152
• Turbopack: add test case for persistent caching: #77030
• Upgrade React from 39cad7af-20250411 to b04254fd-20250415: #78253

Misc Changes

• Turbopack: Support ECMAScript styleregex with negative lookahead in require.context calls: #78251

Credits

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

v15.3.1-canary.10

Core Changes

• [dev-overlay] Add dedicated label for recoverable errors: #78186
• [chore] remove unused __NEXT_PRIVATE_RUNTIME_TYPE: #78230

Misc Changes

• [docs] Update 03-fonts.mdx: #77965
• Turbopack Persistent Caching: Use SmallVec to avoid allocations for small values written to DB: #78136
• Turbopack: wait for tracing to be written before exiting: #78210
• refactor(turbopack): Prepare removal of fake AST in tree-shaking: #78172
• Turbopack: more module ident collisions: #78207
• fix(turbo-tasks-fs): Update notify-rs, handle recursive symlinks in realpath implementation, add an e2e test for symlinked files: #78220
• Update Turbopack production test manifest: #78224
• Update Turbopack development test manifest: #78225
• Turbopack: normalize ref type for external tracing: #78226
• Update Rspack production test manifest: #78222
• Getting Started Docs: Add deploying page: #77720
• Docs IA 2.0: Move multi-zones docs to Guides: #78238
• Turbopack: Do multiple unit test runs: #78212
• Turbopack: fix cell not found bug: #78246
• Prevent typescript errors in IDE for newly generated tests: #78247

Credits

Huge thanks to @praizjosh, @sokra, @kdy1, @mischnic, @eps1lon, @bgw, @huozhi, @delbaoliveira, and @unstubbable for helping!

v15.3.1-canary.9

Core Changes

• [dev-overlay] Stop squashing hydration related errors in App Router: #78140
• [test] Enable strictNullChecks in test utils: #78142
• Document Turbopack trace viewer: #78184
• [dev-overlay] Fix error dialog resizing logic: #78144
• Include types in published eslint-plugin-next: #78109
• [dev-overlay] Stop appending wrong Owner Stacks to SSR-only shell errors: #77302

Misc Changes

• [test] Assert on all errors in app/ hydration-error suite: #78132
• Skip failing test via manifest instead: #78161
• Update Turbopack development test manifest: #78179
• Correct require.context relative import keys to match Webpack: #78148
• Getting Started Docs: Clean up docs/app and docs/pages pages: #78151
• Update Rspack production test manifest: #78177
• Update Turbopack production test manifest: #78180
• Update Rspack development test manifest: #78178
• Turbopack: fix duplicate facade module: #78191
• Added @types/jest in installtion commands.: #78090
• Update turbopack.mdx: #78082
• docs: improve wording around NextRequest and query params: #77923
• Docs IA 2.0: Move version upgrade docs under Guides: #78189
• Docs IA 2.0: Move SPA docs under Guides: #78195
• Docs IA 2.0: Move migration docs under Guides: #78193
• Docs Papercuts: #78200
• feat(turbo-tasks): Generate a trace of transient tasks when panicking: #77600
• Turbopack: fix duplicate module from internal ref: #78194
• Fix externals doc validation: #78208

Credits

Huge thanks to @eps1lon, @mischnic, @Cy-Tek, @delbaoliveira, @timneutkens, @raunofreiberg, @devchaudhary24k, @Neschadin, @OreQr, @drewlong314, @bgw, and @ijjk for helping!

v15.3.1-canary.8

Core Changes

• [next-server] remove unnecessary query shallow copy: #78003
• [dev-overlay] disable copy button when clipboard is not available: #78101
• [dev-overlay] Stop stashing React error details on error instances: #77975
• [dynamicIO] Model invalid dynamic on empty shells: #77270
• fix: bump [email protected]: #78149
• Handle graceful fallback for custom error boundaries: #78121

Misc Changes

• refactor(turbo-tasks): Check for transient tasks called from persistent tasks in more places: #77760
• [font] prefix leading numeric google-font name with underscore: #78127
• build: Update swc_core to v22.3.1: #78129
• Update Turbopack production test manifest: #78124
• [test] isolate parallel metadata test: #78134
• Update Turbopack development test manifest: #78125
• Update Rspack production test manifest: #78123
• [test] Add dedicated tsconfig for test utils: #78141
• Turbopack: load chunks only once: #75143
• Reenable a few more Turbopack tests: #78153
• test: remove "@testing-library/jest-dom" from default jest setup: #78157
• Turbopack: Update toolchain to 2025-04-14 (Reapply #78062): #78167

Credits

Huge thanks to @bgw, @Fonger, @huozhi, @ospira, @eps1lon, @kdy1, @gnoff, @styfle, @mischnic, @lubieowoce, and @wbinnssmith for helping!

v15.3.1-canary.7

Core Changes

• Upgrade React from c44e4a25-20250409 to 1d6c8168-20250411: #78067

Misc Changes

• chore(CI): Add lukesandberg to turbopack team: #78074
• [test] Activity has types and supports react-server: #78066

Credits

Huge thanks to @bgw and @eps1lon for helping!

v15.3.1-canary.6

Core Changes

• Add graceful error fallback for bots requests: #77916

Misc Changes

• chore(github): remove redundant markdown body: #76187
• chore(CI): Mention Rspack explicitly, use arewerspackyet.com domain: #77995
• Update Turbopack production test manifest: #78053
• Turbopack: support for CSS Modules in Data URLs: #78040
• test: adjust default timeouts for [waitFor]elementByCss: #78026
• Revert Rust upgrade to nightly-2025-04-10: #78062
• Update Rspack development test manifest: #78049
• Update Rspack production test manifest: #78050

Credits

Huge thanks to @Marukome0743, @bgw, @jantimon, @lubieowoce, @mischnic, and @huozhi for helping!

v15.3.1-canary.5

Core Changes

• Experimental bfcache: Restore state w/ : #77992

Misc Changes

• [test] separate rsc-basic tests: #78038

Credits

Huge thanks to @huozhi and @acdlite for helping!