rsc: remove router injection: #36101
Fix export from and native modules in server component: #36072
feat(next-swc): Update css parser: #36114
fix: do not add locale prefix to api route on NextURL: #36118
Add experimental onlyGenereated flag for unstable_revalidate: #36108
Support necessary headers in the web server response: #36122
Fix only generated case in minimal mode: #36130
Fix req.url of rsc dynamic routes pages gSSP in edge runtime: #36134
Reogranize the client component detection utils: #36135
Add support for catch-all route params in NextRequest page type declaration:

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Last checked 2 Oct 2026, 11:00 UTC

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12.1.6

2 May 2022GitHub Release

Additional changes to review2Matched wording:removedno longerThese matches may be harmless in context. Expand to see the excerpts.

The changelog contains “removed”; check what was removed.
Removed unnecessary React Fragment: #36331
The changelog contains the phrase “no longer”; its impact needs context.
Remove passhref Eslint rule as it's no longer needed with new link behavior: #36511

Core Changes

rsc: remove router injection: #36101
Fix export from and native modules in server component: #36072
feat(next-swc): Update css parser: #36114
fix: do not add locale prefix to api route on NextURL: #36118
Add experimental onlyGenereated flag for unstable_revalidate: #36108
Support necessary headers in the web server response: #36122
Fix only generated case in minimal mode: #36130
Fix req.url of rsc dynamic routes pages gSSP in edge runtime: #36134
Reogranize the client component detection utils: #36135
Add support for catch-all route params in NextRequest page type declaration:

#36137

rsc: mark next head as client component: #36138

rsc: keep static page props: #36157

Update to target es5 for use-subscription: #36159

Fix text decoding for chunk: #36165

Fix symlink and copy logic to standalone directory when using outputStandalone: #35535

Adds linting rule to avoid assignment to 'module' variable: #35279

Fix res.json support for string / null: #36186

Update swc: #36187

Fix next/image usage in most cases of onLoad(): #36176

[eslint-config-next] Update @typescript-eslint/parser to v5.19.0: #36156

Add support for tsconfig moduleResolution node | node12 | nodenext: #36189

Fix missing _app component of AppTree in gIP context: #36206

refactor(build): no force transpile optional chaining: #35976

NextResponse.json: pass options to Response: #35367

Improve NextApiHandler type for early returns: #35166

Fix build activity indicator position: #36208

404 page - Responsive color scheme: #32113

perf(escapeStringRegexp): test before replace: #34472

rsc: skip next builtin module when apply loaders: #36202

Use finally to clean up seen requests: #36222

fix(next-swc/ssg): less aggressive exports drop: #36199

fix type definition for defaultGetInitialProps: #36252

Use renderToStaticMarkup to render documentHTML: #36213

Fix flight loader: #36282

Add telemetry for image config formats (avif/webp): #36289

Ensure error is cleared for missing global css: #36292

next/jest: Allow moduleNameMapper to match before Next.js internal mappings: #36312

Add client HMR tracing for debugging: #36328

feat:Add support for useDefineForClassFields typescript option: #36335

Use fallbackable path module for node and edge runtime: #36306

Update swc: #36269

fix(next): use moduleGraph.getIssuer to avoid deprecation warning (#36329): #36330

Ensure beforeFiles client-side resolving handles dynamic routes: #36317

Ensure there is only 1 render pass in concurrent rendering with getInitialProps in _document: #36352

Changes to the beforeInteractive strategy to make it work for streaming: #31936

Update swc: #36351

Fix failing E2E deployment test cases: #36368

chore: upgrade PostCSS dependencies: #34354

Fix next/image usage of onError(): #36305

Simplify the App and Component handling in render: #36395

Do not polyfill node built-in modules on edge functions: #36190

Fix to remove webpack message per error: #36452

Rework behavior (backwards compatible): #36436

Fix missing interpolation on next/head exports: #36435

Add stitches and material-ui tests for new link behavior + fix TypeScript types when imported: #36474

chore: remove git.io: #36479

fix(#36435): apply correct fix: #36464

Add process env NEXT_RUNTIME: #36383

Fix incorrect asPath with fallback rewrite in minimal mode: #36463

Update manual revalidate response cache handling: #36462

Pass nextRuntime in webpack context: #36488

Support swc parse api in WASM: #36482

Use edge compiler for middleware: #36486

Update swc: #36477

Remove passhref Eslint rule as it's no longer needed with new link behavior: #36511

Add string children case for newNextLinkBehavior codemod: #36516

Add with-edgedb example: #35929

polish isomorphic path module: #36521

Ensure optional params are normalized correctly in minimal mode: #36513

Always add height and width prop to image with layout="raw": #36523

Align behavior of SWC transform & transformSync: #36500

Add event for swc load failure and attempt patching lockfile: #36527

next-swc/wasm: Make span start at 0: #36532

Add support for passing ref to next/link with new behavior enabled: #36537

Update swc: #36535

Refactor base server to get rid of the __server_context hack: #36550

Tweak lockfile patching to be eager: #36549

unlock eslint-config-next dependencies: #35781

Hoist the desired ReactDOM import expression: #36552

bump styled-jsx to latest: #36554

chore: clarify CLI network errors: #36567

Ensure older lockfile/invalid formats are handled: #36577

Adds inline script functionality to next/script for worker and beforeInteractive strategies: #36364

Fix missing Content-Length header from Image Optimization API: #36581

Refactor Page Paths utils and Middleware Plugin: #36576

Reexports styled-jsx JSXStyle in nextjs: #36585

Update status code for normalize error: #36580

Add pagesDir to Jest transformer: #36599

Add tests for routing experiment: #36618

Update findPagesDir: #36619

Fix swc jest pagesDir config: #36623

Fix next node buildin module error message for edge runtime: #36434

Handle styled-jsx in newLinkBehavior codemod: #36628

Documentation Changes

Add instructions to create pages directory and add an index.js file to it: #35971
docs: specify minimum required react version: #36091
Loosen the "public" condition on getSSP: #36018
fixed typo, that should say 'in' not 'from': #36046
Docs: workarounds for router not resetting state (fixes #35138): #35651
Add onLoad gotcha note to basic-features doc: #36261
Fix introduction.md for next.config.js: #36286
Clarifies that path params exist on query object: #36321
Fix broken data fetching links in docs: #33766
Change getStaticProps to getStaticPaths in getStaticPaths docs: #36403
Revert "Change getStaticProps to getStaticPaths in getStaticPaths docs": #36425
Update usage paragraph of next/script onLoad: #36453
Add note about lockfile causing swc to fail to load: #36484
Add docs on self-hosted ISR persisting across pods.: #36520
Adds <link rel="preconnect" ... /> to example optimized font output: #36529
Add note about running next without a sub-command: #36560
Add docs about SSR caching (yes, you can do this with Next.js): #36588

Example Changes

Fixes scripts in Electron examples.: #36133
docs(examples/with-emotion-swc): update readme: #36197
docs: add yoga to examples: #36253
Adds removeListener handler to with-electron-typescript example.: #36323
Removed unnecessary React Fragment: #36331
updated with-rebass dependencies: #36416
Add pnpm-debug: #36394
added with-react-foundation example: #36375
Grammar Changed features and API to features and it's API: #36396
Adding Typescript and Mantine example: #36294
[examples] Update styled-components with Babel - add types: #36125
Fix failing yarn PnP test from missing dependency: #36515
docs(examples): Updated Chakra UI examples: #36333
Fix typo: #36592
add Script key for cache: #36627

Misc Changes

Update CODEOWNERS: #36164
Stabilize flakey prerender test: #36193
Stabilize flakey build-output test: #36195
Validate streaming writer chunk type in testing: #36200
Update CI cache key to allow re-running only failed: #36249
feat(trace): next/trace to event format converter: #36281
Add handling for testing against deployments: #36285
Make setup-wasm script work for local dev: #36355
chore(create-next-app): fix pnpm create step: #36398
Update font-optimization test snapshot: #36492
docs: clarify triaging: #36507
Remove extra yarn PnP example test: #36518
Update rewrite destination for flakey rewrite tests: #36519
Normalize font optimization snapshot to reduce flakes: #36531
Bump react dev dep to 18.1: #36491

Credits

Huge thanks to @huozhi, @shuding, @kdy1, @nkzawa, @prichey, @manovotny, @balazsorban44, @remorses, @amandeepmittal, @mward-sudo, @eric-burel, @timneutkens, @styfle, @ytkg, @CuriosBasant, @bart-krakowski, @SukkaW, @jameshfisher, @Kikobeats, @bjorm, @alex-page, @fmmoret, @ijjk, @davidbarker, @kwonoj, @seanparmelee, @ddgrishkin, @mmartinsoliv, @byjoshuadavis, @sakib412, @Chastrlove, @padmaia, @janicklas-ralph, @MaedahBatool, @shinkj11, @youngvform, @zaida04, @therealmarzouq, @codedbyjordan, @deadlynjdj, @lfades, @Brooooooklyn, @renbaoshuo, @javivelasco, @triyanox, @rafae2k, @colinhacks, @atcastle, @leerob, @sa3dany, @nikolovlazar, @refactorized, @housseindjirdeh, @ro11ingbutler, and @gusrb3164 for helping!

12.1.6#

Core Changes

12.1.6#

Core Changes

Documentation Changes

Example Changes

Misc Changes

Credits

12.1.6

12.1.6