v12.1.0

Core Changes

• Relay Support in Rust Compiler: #33702
• fix eslint link-passhref rule: #33857
• update webpack: #33831
• Flush buffered vitals metrics on page mount: #33867
• fix problem with HMR when middleware and page reference the same node_module: #33873
• Refactor page component getter in web server: #33759
• update NextResponse default redirect status to 307 to match docs: #33505
• Bug fix: dynamic page should not be interpreted as predefined page: #33808
• Group streaming experimental apis: #33878
• Encapsulate routing and initial hydration: #33875
• Optimize offline condition judgment: #33238
• Ensure external beforeFiles rewrites are handled with next/link: #33888
• Fix parsing params for i18n optional route in minimal mode: #33896
• Ensure browserslist extends works properly: #33890
• Fix image cache race condition: #33883
• Add support for Relay projects without artifactDirectory: #33918
• fix: handle jsxspreadattribute in inline-script-id eslint rule: #32421
• feat(next-swc): Update swc: #33724
• Update to latest version of amphtml-validator: #33967
• Warn in dev mode when script tags are added with next/head: #33968
• Ensure optional chaining in swc matches babel: #33995
• Use react-dom/server.browser in Node.js: #33950
• Ensure external middleware rewrite is handled correctly: #33962
• Update Terser to v5.10.0, fix minification issues: #33045
• Warn in dev mode when stylesheets are added using next/head: #34004
• Use ReadableStream in RenderResult: #34005
• Fix suffix ordering while streaming: #34011
• Don't use yarn if a package-lock.json file is found: #31926
• Do not warn when application/ld+json scripts are used with next/head: #34021
• Babel & next-swc: Fix exporting page config with AsExpression: #32702
• Detect per page runtime config for functions manifest: #33945
• Add JSDoc to config options: #32915
• Update font-stylesheet-gathering-plugin.ts: #30709
• Add decoratorMetadata flag if enabled by tsconfig: #32914
• fix: data url handling in css-loader: #34034
• Place 'charset' element at the top of : #28119
• Fix detection of anchor click events inside svg: #23272
• Allow passing nothing as custom jest config: #32328
• Fixes #31240: Adding a recursive addPackagePath function in webpack-config: #31264
• Require component rendered as child of Link to pass event to onClick handler: #27723
• Allow scroll prevention on hash change: #31921
• Add support for async fn / promise in next.config.js/.mjs: #33662
• Fix lazyRoot functionality for next/image: #33933
• Change SWC minify from beta to release candidate: #34056
• Make Router state immutable: #33925
• Stop exposing internal render and renderError methods from next/client: #34069
• Add api-utils helper for testing: #34078
• feat(next-swc): Update swc: #34045
• Deprecate concurrentFeatures with runtime: #34068
• Add check for resolveWeak to next/dynamic: #33908
• remove unneeded and broken plugin: #34087
• Remove experimental warning from next/jest: #34096
• fix: arrow function export in rsc client component: #34105
• Use renderToStream with React 18: #34106
• Fix static result being piped: #34111
• Polyfill pipeTo and pipeThrough: #34112
• Update to leverage response-cache for image-optimizer: #34075
• fix: next/image usage from node_modules: #33559
• Fix included flight manifest on node runtime: #34113
• Fix: Use react-dom/server.browser when reactRoot: true: #34116
• Fix image-optimizer requires in next-server: #34141
• Fix required files matching in rsc: #34137
• Throw error when ts file contains css.resolve: #34149
• Chore/stable swc compiler options: #34074
• Fix bug with "Circular Structure" error: #23905
• Add _document and _app pre-import: #23261
• Ensure standalone server handles SIGTERM: #34151
• Bump nft to 0.17.5: #34190
• feat: copy .env file in standalone mode: #34143
• Fix reuse of inline flight response and 404 for RSC in node runtime: #34202
• Use updated recursive rm fs method for image-optimizer: #34210
• Fix link for "Delete Query Params in Middleware" error message in next-server.ts: #34230
• Enable dynamic HTML in minimal mode: #34222
• Fix uncaught error in getInitialProps when runtime is set to nodejs: #34228
• Optimize the web server size: #34242
• feat: allow node-sass@7 as peer dependency: #34107
• Adding step to build the app with docker in existing projects: #34083
• Changed all occurrences of etc to match: #34280
• Align reactRoot config between server and webpack config: #34328
• Fix <RouteAnnouncer/> shouldn't announce initial path under strict mode and React 18: #34338
• Fix flight root failed to hydrate in strict mode: #34333
• Allow dismissing full refresh warning for session: #33868
• Remove experimental image optimization feature: #34349
• Add support for "type": "module" in package.json: #33637
• feat(next-swc): Update swc: #34355
• Ensure invalid request to static page is handled correctly: #34346
• Add Error Handing section for ISR: #34360
• feat(next-swc): Update swc: #34408
• feat: improve opening a new issue flow: #34434
• Ensure we don't poll page in development when notFound: true is returned: #34352
• Add image config for dangerouslyAllowSVG and contentSecurityPolicy: #34431
• Revert swc css bump temporarily: #34440
• update webpack: #34444
• Update server-only changes HMR handling: #34298
• Fix .svg image optimization with a loader prop: #34452
• Allow reading request bodies in middlewares: #34294
• Revert "Allow reading request bodies in middlewares": #34479
• update webpack: #34477
• Fix chunk buffering for server components: #34474
• Remove deprecation for relative URL usage in middlewares: #34461

Documentation Changes

• Building web forms with Next.js and Vercel: #32525
• Add Clarity About Downloading and Self-Hosting a Font File: #33760
• Correct pluralization in newly added Relay documentation: #33880
• Update MDX document: #33916
• Update info on how to process webhooks by disabling bodyParser: #33909
• Update deployment docs to fix oversized image.: #33934
• docs: recommend .end instead of .send when no body is being sent: #33611
• Update custom document docs to prepare for React 18.: #33814
• Fix typo in new experimental Relay support docs: #33963
• docs(isr): add missing key prop in jsx loop: #33984
• docs: use function for components in general: #33990
• Updated going-to-production with loading performance: #33179
• docs: fix variable name from profileData to data in CSR page: #34018
• Improve Form Guide Contents: #33913
• Add async to middleware docs.: #31356
• (docs): update i18n-routing.md: #33123
• Fix redirect url for prefixing the default locale: #33762
• Add note about dns-prefetch as fallback: #30385
• Update custom server docs for async methods: #30521
• Update multiple docs pages to follow Docs Content style guide: #33855
• fix: Change url to nextUrl inside delete-query-params-in-middlewa…: #33796
• Changing GitHub Actions cache documentation: #28228
• [docs] Add env var load order: #32350
• docs: add Ory vercel example to auth page: #33029
• Add note about crawlers and fallback: true: #34114
• docs(api-routes): fix node docs links: #34125
• add note to clarify use of Link when clearing preview cookies (issue #34129): #34142
• Re-render details if rewrites are used: #34049
• Add heading to invalid-api-status-body error: #34150
• Ensure /index route is redirected correctly for docs: #34206
• Update docs for image lazyRoot prop: #34241
• Update link for includeFiles glob reference: #34269
• Update Preview Mode docs.: #34278
• Update frequently asked questions in documentation: #34252
• Alphabetize auth docs providers.: #34281
• Replace babel with SWC & minor changes in getting started: #34282
• Update Middleware docs to add version history.: #34302
• Fix typo on getInitialProps: #34309
• Update missing curly brace in image.md: #34307
• docs: Add link to pageExtensions config in page-without-valid-component.md: #34285
• Add an example to Write server-side code directly section: #34319
• Few touch-ups to the docs on web forms in Next: #34286
• Update MDX Custom Elements setup: #34175
• Update image.md: #34374
• Updated failed to load error page to include info about node versions: #34362
• docs: react 18, streaming SSR, rsc with new apis: #33986
• Update MDX Guide config example: #34405
• Remove hello world RSC example.: #34456
• Fix typo: #34480

Example Changes

• Update npm comment in Docker example: #33881
• Update Contentful example to add validations to solve graphql complexity errors.: #33958
• Update all CMS examples dependencies.: #33580
• Fix warning unknown prettier option when running yarn lint.: #34019
• [New Example] with docker - multiple deployment environments: #34015
• Fix ambiguous flags in Dockerfile example: #33417
• fix(examples/with-docker): update env comments: #29972
• Remove unused "start" script from with-docker/package.json: #31053
• Update remark in blog-starter-typescript: #31393
• Update _document.js: #29930
• Docs: use the nextv12 example from the storybook-addon-next repo as the with-storybook example: #33891
• examples, update with new URL: #34035
• [with-typescript-graphql] fixes breaking changes in graphql-let v0.18.0: #32681
• fix(example): with-typescript-graphql graphql-let package migrate: #29996
• feat: update firebase in with-firebase: #29581
• progressive web app example converted to typescript : #33100
• Make adjustment to cache config of with-apollo example: #32733
• Fix error thrown by next/image in the Sanity example: #34203
• Update examples/active-class-name: #34205
• chore(example): update preact links in examples: #34233
• fix: don't wrap profile in firebase example: #34457

Misc Changes

• Fix flakey image-optimizer test: #33957
• Update azure config: #33999
• Add types to nextConfig in default template : #34029
• docs(contributing): Search GitHub for an open or closed PR that relates to your submission: #22533
• fix(create-next-app): add default version: #33006
• chore: do not run lock/stale actions on forks: #34053
• Fix functions manifest test: #34092
• add pnpm debug file in gitignore templates: #34091
• Update failing tests from upstream resource: #34110
• Update version number in next.config.js API reference
• chore: log lock bot output: #34168
• chore: decrease lock action runs #34180
• Allow listening for page requests in tests: #34204
• Update code of conduct from v1.4 to v2.1: #34208
• Update contributing.md to link to walkthrough video.: #34299
• fix: typo in gitignore in typescript template: #34372
• test: add inline flight response reuse test: #34364
• Update 2.example_bug_report.yml
• Update 1.bug_report.yml
• Update 2.example_bug_report.yml
• Update font-optimization test snapshot: #34478

Credits

Huge thanks to @MaedahBatool, @mutebg, @sokra, @huozhi, @hanford, @shuding, @sean6bucks, @jameshfisher, @devknoll, @yuta-ike, @zh-lx, @amandeepmittal, @alunyov, @stefanprobst, @leerob, @balazsorban44, @kdy1, @brittanyrw, @jord1e, @kara, @vvo, @ismaelrumzan, @dlindenkreuz, @mohammadxali, @nguyenyou, @thibautsabot, @hanneslund, @vertti, @KateKate, @stefee, @mikinovation, @Leticijak, @mohsen1, @ncphillips, @ehowey, @lancechentw, @krychaxp, @fmacherey, @pklawansky, @RyanClementsHax, @lakbychance, @sannajammeh, @oliviertassinari, @alexander-akait, @u-yas, @Cheprer, @msp5382, @chrispat, @getspooky, @Ryz0nd, @klaasman, @midgleyc, @kumard3, @jesstelford, @neeraj3029, @glenngijsberts, @pie6k, @wouterraateland, @timneutkens, @11koukou, @thesyedbasim, @aeneasr, @ijjk, @lfades, @JuniorTour, @xavhan, @mattyocode, @padmaia, @Skn0tt, @gwer, @Nutlope, @styfle, @stipsan, @xhoantran, @eolme, @sespinosa, @zenorocha, @hjaber, @benmvp, @T-O-R-U-S, @dburrows, @atcastle, @kiriny, @molebox, @kitayoshi, and @Schniz for helping!