CHANGELOG.md

## [1.2.16] - 2026-10-29

### 🚀 Features

- perf-kit: check rendered output against the original build (#11140) by @IWANABETHATGUY
- perf-kit: node/deno server startup mode (#10601) by @IWANABETHATGUY
- perf-kit: browser page-load perf harness for coding agents (#10365) by @IWANABETHATGUY
- devtools: report mode - agent-readable build metrics report (#10364) by @IWANABETHATGUY
- inline-common-chunks: print record factories parenthesized so they compile eagerly (#11282) by @mattlewis92
- fold `'key' in ns` on namespace imports with statically known exports (#11333) by @danielroe
- inline-common-chunks: inline chunks using `import.meta.hot` in dev mode (#11339) by @hyfdev
- support `experimentalInlineCommonChunks` in dev mode (#11335) by @hyfdev
- use `INVALID_TLA_FORMAT` error for Rollup compatibility (#11266) by @sapphi-red

### 🐛 Bug Fixes

- await bundle.close() in loadConfig and clean up every generated config file (#10347) by @Brooooooklyn
- deps: update mimalloc-safe to 0.1.69 (#11376) by @shulaoda
- transform: don't crash when the working directory has been deleted (#11352) by @shulaoda
- import-glob: follow directory symlinks on the wasm binding (#10624) by @hyfdev
- tree-shaking: preserve exported rest bindings from dynamic imports (#11365) by @shuvroroy
- transform: report `tsconfigFilePaths` for a tsconfig resolved through `TsconfigCache` (#11346) by @cainrus
- tsconfig: don't apply tsconfig when resolving imports from virtual modules (#11089) by @rubas
- code-splitting: handle emitted entries the same as `input` entries when placing the runtime (#11353) by @IWANABETHATGUY
- error: make Diagnostic::add_file idempotent (#10610) by @Nic-Polumeyv
- avoid retaining callable builtin callback owners (#10961) by @IWANABETHATGUY
- code-splitting: only host the runtime in a chunk that every consumer's entries load (#11293) by @IWANABETHATGUY
- code-splitting: keep the source order of chunk imports (#11298) by @IWANABETHATGUY
- dev: don't treat a wrapped module's init as a no-op in dev mode (#11334) by @hyfdev
- treat `cwd` as a literal path in relative glob filters (#11291) by @onmax
- deps: update emnapi to 2.0.0-beta.2 and pin `@napi-rs/wasm-runtime` to 1.2.6 (#11292) by @IWANABETHATGUY
- chunk-import-map: hash stable module ids so keys don't depend on the build folder (#11277) by @mandyheg
- respect CPU limits when sizing native runtime workers (#11280) by @Brooooooklyn
- deconflict the namespace of a module without module syntax (#11256) by @IWANABETHATGUY
- code-splitting: rebuild an absorbed dynamic entry's namespace from what its imports read (#11200) by @mattlewis92
- escape line terminators in debug-info comments (#11258) by @IWANABETHATGUY

### 🚜 Refactor

- extract callable builtin hook wrapper (#10964) by @IWANABETHATGUY

### 📚 Documentation

- add an in-depth explanation for inline common chunks (#11239) by @hyfdev

### ⚡ Performance

- incremental cycle check for `avoidRedundantChunkLoads` (#11320) by @IWANABETHATGUY
- avoid copying module code for `renderedLength` and share `chunk.code` across plugins (#11342) by @IWANABETHATGUY
- count UTF-16 lengths with `simd-utf16-len` (#11259) by @IWANABETHATGUY
- don't load consola when importing rolldown (#11257) by @magurotuna

### 🧪 Testing

- dev: cover hot updates that need modules the tab never received (#9647) by @matthewdavis-oai
- dev: add dynamic import rebuild test (#7123) by @sapphi-red
- code-splitting: import file URLs in fresh-process runtime host tests on Windows (#11354) by @shulaoda
- esbuild: mark loader_data_url_base64_invalid_utf8 as an intentional difference (#10790) by @CoderSerio
- watch: fix flaky `watch buildDelay` (#11175) by @Brooooooklyn

### ⚙️ Miscellaneous Tasks

- install `cmake-core` instead of the `cmake` metapackage on FreeBSD (#11361) by @shulaoda
- deps: update oxc to 0.156.0 (#11326) by @Dunqing
- stop the Discord notification when the metric workflow fails (#11357) by @IWANABETHATGUY
- connect to the Void platform before the docs deploy (#11350) by @shulaoda
- deps: update rust crates (#11297) by @renovate[bot]
- deps: update dependency vite-plus to v1.4.0 (#11288) by @renovate[bot]
- deps: update npm packages (#11296) by @renovate[bot]
- deps: update napi (#11287) by @renovate[bot]
- deps: update rollup submodule for tests to v4.65.1 (#11331) by @rolldown-guard[bot]
- deps: update test262 submodule for tests (#11332) by @rolldown-guard[bot]
- deps: update dependency rolldown-plugin-dts to v0.28.8 (#11286) by @renovate[bot]
- deps: bump tokio to 1.53.3 (#11317) by @Brooooooklyn

### ❤️ New Contributors

* @mattlewis92 made their first contribution in [#11282](https://github.com/rolldown/rolldown/pull/11282)
* @shuvroroy made their first contribution in [#11365](https://github.com/rolldown/rolldown/pull/11365)
* @cainrus made their first contribution in [#11346](https://github.com/rolldown/rolldown/pull/11346)
* @matthewdavis-oai made their first contribution in [#9647](https://github.com/rolldown/rolldown/pull/9647)
* @rubas made their first contribution in [#11089](https://github.com/rolldown/rolldown/pull/11089)
* @danielroe made their first contribution in [#11333](https://github.com/rolldown/rolldown/pull/11333)
* @onmax made their first contribution in [#11291](https://github.com/rolldown/rolldown/pull/11291)
* @mandyheg made their first contribution in [#11277](https://github.com/rolldown/rolldown/pull/11277)
* @magurotuna made their first contribution in [#11257](https://github.com/rolldown/rolldown/pull/11257)


## [1.2.15] - 2026-10-21

### 🚀 Features

- rolldown_plugin_vite_resolve: add `isBundled` to pick the browser-external stub format (#11260) by @h-a-n-a
- dev: mark entry modules in the HMR module graph (#11252) by @h-a-n-a
- mark module starts with `// <id>` comments instead of `#region` pairs (#11235) by @IWANABETHATGUY

### 🐛 Bug Fixes

- plugin: stop `this.resolve` recursion between plugins with `skipSelf: true` (#11181) by @anzal1
- rolldown_plugin_vite_resolve: handle external `require` for `ssr.target: 'webworker'` (#11205) by @sapphi-red
- rolldown_plugin_vite_build_import_analysis: only wrap dynamic imports with static specifiers in __vitePreload (#10879) by @smeng9
- strict-execution-order: wrap eager modules that forward wrapped definers (#11186) by @hyfdev
- chunk-import-map: keep common chunk keys unique when enabling inline common chunks (#11230) by @hyfdev
- only register signal-exit handler when a trace subscriber is active (#11208) by @DaniilIsupov

### 🧪 Testing

- fold hand-unrolled Rust test tables (#11212) by @Brooooooklyn

### ⚙️ Miscellaneous Tasks

- deps: upgrade oxc to 0.155.0 (#11228) by @Dunqing
- rollup-tests: retriage failed tests (#11251) by @sapphi-red
- deps: update rollup submodule for tests to v4.64.12 (#11249) by @rolldown-guard[bot]
- deps: update test262 submodule for tests (#11242) by @rolldown-guard[bot]

### ❤️ New Contributors

* @anzal1 made their first contribution in [#11181](https://github.com/rolldown/rolldown/pull/11181)
* @smeng9 made their first contribution in [#10879](https://github.com/rolldown/rolldown/pull/10879)
* @DaniilIsupov made their first contribution in [#11208](https://github.com/rolldown/rolldown/pull/11208)


## [1.2.14] - 2026-10-14

### 🚀 Features

- add `output.charset` option (#11194) by @sapphi-red
- code-splitting: route independent ESM re-exports per consumer (#11177) by @hyfdev

### 🐛 Bug Fixes

- handle `output.charset: 'ascii'` + `output.minify: false` (#11207) by @sapphi-red
- tree-shaking: preserve initialization of wrapped ESM re-exports (#11167) by @hyfdev
- sourcemap: preserve boundaries when tracing has no mapping (#11170) by @sapphi-red
- strict-execution-order: account for init imports during code splitting (#11162) by @hyfdev
- strict-execution-order: avoid eager loading through mixed re-exports (#11151) by @hyfdev
- tree-shake expression statements that coerce known constants (#10825) by @IWANABETHATGUY
- shim-missing-exports: shim deep namespace reads through default imports (#11184) by @IWANABETHATGUY
- shim-missing-exports: shim missing static namespace members (#11179) by @hyfdev
- preserve-entry-signatures: keep internal bindings out of entry exports (#11094) by @hyfdev
- report ASSIGN_TO_IMPORT for writes to re-exported namespace members (#11148) by @IWANABETHATGUY
- dev: keep files loaded by the HMR stage watched when the same task rebuilds (#11154) by @Brooooooklyn
- dev: watch lazily compiled files even when a build starts first (#11152) by @Brooooooklyn
- cjs: print a CommonJS module's top-level `this` as a wrapper parameter rolldown names (#11135) by @IWANABETHATGUY
- renamer: keep fixed names off the bindings that would capture them (#11134) by @IWANABETHATGUY
- renamer: keep an external `require()` local in a CJS module off the top-level names (#11133) by @IWANABETHATGUY
- rolldown: make a repeated `close()` a no-op (#11142) by @Brooooooklyn
- avoid renaming entry top-level bindings onto their nested bindings (#11122) by @IWANABETHATGUY
- renamer: keep generated top-level names off inner bindings (#11121) by @IWANABETHATGUY

### 🚜 Refactor

- renamer: treat a CJS-wrapped module's root scope as an inner scope (#11130) by @IWANABETHATGUY

### 📚 Documentation

- add renaming design and implementation docs (#11131) by @IWANABETHATGUY

### ⚡ Performance

- ci: overlap independent setup, checks, and artifacts (#11169) by @hyfdev

### 🧪 Testing

- dev: use dunce::canonicalize so dev engine tests pass on Windows (#11192) by @shulaoda
- preserve-entry-signatures: cover nested dynamic imports (#11164) by @hyfdev

### ⚙️ Miscellaneous Tasks

- deps: upgrade oxc to 0.154.0 (#11209) by @shulaoda
- make Security Analysis pass again (security-action v1.0.10, serde_yaml -> saphyr) (#11197) by @Brooooooklyn
- deps: update rollup submodule for tests to v4.64.5 (#11190) by @rolldown-guard[bot]
- deps: update test262 submodule for tests (#11191) by @rolldown-guard[bot]
- deps: update crate-ci/typos action to v1.51.1 (#11174) by @renovate[bot]
- vite-tests: link the workspace rolldown into the Vite clone again (#11147) by @Brooooooklyn


## [1.2.13] - 2026-10-07

### 🚀 Features

- rolldown_plugin_vite_import_glob: follow file creation and deletion via hotUpdate (#10550) by @shulaoda
- inline-common-chunks: deduplicate shared code along known loading paths (#11093) by @hyfdev
- rolldown_plugin_vite_import_glob: record a matcher per glob call in dev (#10592) by @shulaoda
- rolldown_plugin_vite_import_glob: watch the directory each glob reads (#10549) by @shulaoda
- watch: hand watch.exclude to notify as its ignore filter (#11008) by @shulaoda
- dev: add `experimental.devMode.hotUpdate` option (#11123) by @h-a-n-a

### 🐛 Bug Fixes

- renamer: check the printed name of namespace-alias imports for captures (#11129) by @IWANABETHATGUY
- devtools: honor `devtools.sessionId` by @Brooooooklyn
- renamer: keep a renamed nested binding off its module's top-level bindings (#11128) by @IWANABETHATGUY
- dev: keep `this` undefined when calling an imported function in HMR patches and lazy chunks (#11126) by @h-a-n-a
- dev: read string-named imports correctly in HMR patches and lazy chunks (#11127) by @h-a-n-a
- sanitize preserveModules chunk names after resolving the relative path (#11087) by @waltuov
- keep the `with` clause on bare external imports (#11100) by @IWANABETHATGUY
- generator: filter DISABLE_JS_HOOK bits from generated HookUsage (#10346) by @Brooooooklyn
- dev: make the module factory async for top-level await (#11118) by @h-a-n-a
- node: give each renderChunk call its own meta object (#11115) by @Brooooooklyn
- honor `externalLiveBindings` for imported exports (#11048) by @camc314
- dev: keep a late payload from replacing newer module code (#11030) by @h-a-n-a
- binding: use-after-free in async `transform` with a `TsconfigCache` (#11080) by @shulaoda
- fail on chunk syntax errors and escape export names once (#11051) by @hyfdev
- dev: ship newly imported modules the client never received (#11029) by @h-a-n-a
- code-splitting: avoid cycles from redundant re-export initialization (#11073) by @hyfdev
- link: treat re-exports of the same external binding as one export (#11069) by @IWANABETHATGUY
- escape namespace properties in IIFE and UMD output (#11085) by @hyfdev
- escape dependency paths in CJS and UMD output (#11084) by @hyfdev
- use computed access for arbitrary import names (#11083) by @hyfdev
- generate valid bindings for shimmed exports (#11082) by @hyfdev
- dev: reload the page when an HMR update fails after merging its edit (#11031) by @h-a-n-a
- dev/lazy: ship the deps of a module that a patch shipped but never ran (#11028) by @h-a-n-a
- code-splitting: don't move init calls in front of unwrapped JSON modules (#11062) by @IWANABETHATGUY
- escape export names in `defineProperty` calls (#11047) by @camc314

### 📚 Documentation

- say the CLI bundles multiple configs one after another (#11111) by @Brooooooklyn
- add `renderChunk` hook filter docs (#11065) by @sapphi-red

### ⚡ Performance

- use `concat_string!` instead of `format!` for plain string joins (#11139) by @IWANABETHATGUY
- utils: evaluate each `concat_string!` argument once (#11105) by @IWANABETHATGUY
- json: escape `JSON.parse` string with `json-escape-simd` (#11104) by @IWANABETHATGUY
- unwrap JSON modules with a non-object root (#11066) by @IWANABETHATGUY

### 🧪 Testing

- inline-common-chunks: fix flaky inlineCommonChunks concurrent imports (#11088) by @hyfdev

### ⚙️ Miscellaneous Tasks

- deps: upgrade oxc to 0.153.0 (#11109) by @camc314
- update pnpm to v12 (#10876) by @btea
- deps: update pnpm to v11.28.0 (#11049) by @renovate[bot]
- deps: update rollup submodule for tests to v4.64.0 (#11116) by @rolldown-guard[bot]
- deps: update napi (#11137) by @renovate[bot]
- scripts: spawn the rolldown CLI without a shell in setup-vite (#10875) by @Brooooooklyn
- deps: bump `@napi-rs/wasm-runtime` to `~1.2.5` (#11117) by @shulaoda
- deps: update napi (#11108) by @renovate[bot]
- deps: update taiki-e/install-action action to v2.87.22 (#11096) by @renovate[bot]
- deps: update npm packages (#11095) by @renovate[bot]
- deps: update rust crates (#11097) by @renovate[bot]
- deps: update napi (#11063) by @renovate[bot]
- deps: update dependency rust to v1.99.0 (#11071) by @renovate[bot]
- deps: update dependency vite-plus to v1 (#11056) by @renovate[bot]


## [1.2.12] - 2026-09-30

### 🚀 Features

- inline common chunks containing import() and deduplicate shared code in lazy chunks (#11034) by @hyfdev
- experimental `inlineCommonChunks` support (#10899) by @hyfdev
- dev: ship imported bindings for HMR partial accept (#10856) by @h-a-n-a

### 🐛 Bug Fixes

- chunking: re-derive chunk exec orders after the runtime leaves its host chunk (#11005) by @hyfdev
- code-splitting: gate member-read init paths on the reading statement (#11039) by @hyfdev
- code-splitting: retain initialization paths through re-exported namespaces (#11037) by @hyfdev
- dev: reject non-ESM output formats in dev mode (#11038) by @h-a-n-a
- dev: align `import.meta.hot.accept` deps with Vite (#10997) by @h-a-n-a
- dev: clear the resolver cache when a file is created or deleted (#10986) by @waltuov
- error: name the resolved specifier in unresolved import diagnostics (#11014) by @linyiru
- make entries-aware chunk merging deterministic (#11002) by @hyfdev
- watch: avoid restarting macOS watcher for unchanged paths (#10992) by @sep2

### 🚜 Refactor

- dev: ship the dev runtime entry as one file (#10998) by @h-a-n-a
- binding: remove `__internalForcePanic` (#10989) by @IWANABETHATGUY

### 📚 Documentation

- fix cloudflare preview builds (#10996) by @sapphi-red
- fix build config loader warning (#10994) by @sapphi-red
- deps: use Vite 8 (#10993) by @sapphi-red

### ⚡ Performance

- dev: only ship rows with dynamic edges in registerGraph (#11019) by @h-a-n-a

### 🧪 Testing

- code-splitting: cover more re-exported namespace shapes (#11042) by @hyfdev
- webcontainer: cover the WebContainer download fallback in plain Node (#10966) by @shulaoda
- dev: pin the runtime entry file layout that Vite serves (#10983) by @h-a-n-a

### ⚙️ Miscellaneous Tasks

- pin VOID_API_URL for the docs deploy (#11041) by @shulaoda
- opt into the WebContainer smoke test for napi bumps and loader changes (#10967) by @shulaoda
- deps: upgrade oxc to 0.152.0 (#11018) by @camc314
- deps: update rust crates (#11012) by @renovate[bot]
- deps: update npm packages (#11011) by @renovate[bot]
- deps: update crate-ci/typos action to v1.50.3 (#11023) by @renovate[bot]
- deps: update test262 submodule for tests (#11022) by @rolldown-guard[bot]
- deps: update rollup submodule for tests to v4.63.5 (#11021) by @rolldown-guard[bot]
- deps: update dependency vite-plus to v1 (#11017) by @renovate[bot]
- deps: update github actions (#11010) by @renovate[bot]
- remove `CLAUDE.md` (#10925) by @iiio2
- verify release debug info by matching file IDs (#10988) by @IWANABETHATGUY
- deps: update rollup submodule for tests to v4.63.4 (#10940) by @rolldown-guard[bot]

### ❤️ New Contributors

* @waltuov made their first contribution in [#10986](https://github.com/rolldown/rolldown/pull/10986)
* @linyiru made their first contribution in [#11014](https://github.com/rolldown/rolldown/pull/11014)
* @sep2 made their first contribution in [#10992](https://github.com/rolldown/rolldown/pull/10992)


## [1.2.11] - 2026-09-24

### 🚀 Features

- watch: report only file events (#10974) by @shulaoda

### 🐛 Bug Fixes

- sourcemap: preserve names through `collapse_sourcemaps` (#9486) by @eoin
- watch: map metadata events by kind and missing paths as deleted (#10973) by @shulaoda

### 🚜 Refactor

- rolldown_fs_watcher: hand the handler file events instead of notify results (#10980) by @shulaoda
- rolldown_fs_watcher: share one event handler adapter between the notify watchers (#10979) by @shulaoda
- rolldown_fs_watcher: register every path with one watch mode (#10978) by @shulaoda
- rolldown_fs_watcher: tweak the backend traits and the event mapping (#10977) by @shulaoda
- watch: translate notify events inside FsWatcher (#10972) by @shulaoda

### 📚 Documentation

- watch: update the fs watcher layout and the dev coordinator message (#10981) by @shulaoda
- watch: document the event translation in FsWatcher (#10975) by @shulaoda

### ◀️ Revert

- "perf(dev/lazy): fetch a lazy route in one request" (#10789) (#10982) by @h-a-n-a

### ❤️ New Contributors

* @eoin made their first contribution in [#9486](https://github.com/rolldown/rolldown/pull/9486)


## [1.2.10] - 2026-09-23

### 🚀 Features

- rolldown_plugin_esm_external_require: prefer 'module.exports' over a namespace spread (#10901) by @isker
- watch: support directories in addWatchFile (#10944) by @shulaoda
- label code-splitting timing rows (#10896) by @IWANABETHATGUY
- separate code-splitting group timing rows (#10892) by @IWANABETHATGUY
- clarify callback owners in the timing report (#10890) by @IWANABETHATGUY
- add checks.bundlerTimings with deprecated pluginTimings alias (#10883) by @IWANABETHATGUY

### 🐛 Bug Fixes

- code-splitting: initialize leaves behind a re-exported namespace import (#10694) by @hyfdev
- node: record the WASI target on the WebContainer binding fallback (#10952) by @shulaoda
- dev: force incremental build on in DevEngine::new (#10958) by @o-alexandrov
- tree-shaking: propagate side effects through cycles (#10893) by @IWANABETHATGUY
- deconflict CJS locals that shadow a renamed require wrapper (#10793) by @logaretm
- include group indexes in labeled `codeSplitting` timing rows (#10916) by @IWANABETHATGUY
- docs: type-check Algolia `indices` option (#10934) by @shulaoda
- docs: restore Algolia search (#10929) by @isker
- tell code-splitting timing rows apart by position (#10903) by @IWANABETHATGUY

### 🚜 Refactor

- rolldown_fs_watcher: remove the single-path API (#10950) by @shulaoda
- dev: register watch files through FsWatcher (#10949) by @shulaoda
- watch: let FsWatcher own the watched paths (#10948) by @shulaoda
- watch: identify watch files by normalized absolute path (#10943) by @shulaoda
- plugin: build a plugin-resolved `ResolvedId` in one place (#10921) by @IWANABETHATGUY

### 📚 Documentation

- dev: add HMR design, align dev docs and engine comments (#10271) by @h-a-n-a

### ⚡ Performance

- batch `sourcemapPathTransform` calls (#10763) by @IWANABETHATGUY
- batch `sourcemapIgnoreList` calls (#10762) by @IWANABETHATGUY
- hmr: drop the unused kind argument from registerFactory (#10915) by @h-a-n-a

### 🧪 Testing

- handle Windows paths in sourcemap callback tests (#10942) by @IWANABETHATGUY

### ⚙️ Miscellaneous Tasks

- replace custom `ban-expect-assertions` JS lint with builtin `no-restricted-properties` (#10933) by @isker
- deps: update napi (#10959) by @renovate[bot]
- deps: upgrade oxc to 0.151.0 (#10939) by @camc314
- deps: update test262 submodule for tests (#10941) by @rolldown-guard[bot]
- deps: update npm packages (#10931) by @renovate[bot]
- deps: update napi (#10928) by @renovate[bot]
- deps: update dependency vite-plus to v0.3.3 (#10914) by @renovate[bot]
- deps: update rust crates (#10932) by @renovate[bot]
- deps: update github actions (#10930) by @renovate[bot]
- deps: update dependency rolldown-plugin-dts to v0.28.6 (#10924) by @renovate[bot]
- deps: update crate-ci/typos action to v1.50.2 (#10917) by @renovate[bot]
- deps: update dependency @napi-rs/cli to v3.10.4 (#10913) by @renovate[bot]
- deps: update napi (#10897) by @renovate[bot]

### ❤️ New Contributors

* @o-alexandrov made their first contribution in [#10958](https://github.com/rolldown/rolldown/pull/10958)


## [1.2.9] - 2026-09-16

### 🚀 Features

- add `MODULE_LEVEL_DIRECTIVE` warning (#10791) by @sapphi-red

### 🐛 Bug Fixes

- handle CommonJS exports through top-level `this` (#10872) by @IWANABETHATGUY
- scripts: make setup-vite CLI invocation work on Windows (#10885) by @shulaoda
- remove deleted property from output bundle proxy target (#10815) by @Vladexy88x
- treat module-scope `await using` as top-level await (#10739) by @MarshallOfSound
- watch: preserve plugin attribution in warnings (#10473) by @Nic-Polumeyv
- test-dev-server: link the workspace rolldown before building vite (#10857) by @h-a-n-a
- minify: preserve annotation comments when minified (#10854) (#10855) by @justonemorenight

### ⚡ Performance

- dev/lazy: fetch a lazy route in one request (#10789) by @h-a-n-a
- plugin: reduce binding binary size (#10776) by @Boshen
- vite-reporter: reuse emitted sourcemap sizes (#10841) by @hyfdev

### 🧪 Testing

- dev: full-bundle-mode regression test for cyclic import binding (#9946) (#9947) by @ShMcK
- cover asset option callback timings (#10870) by @IWANABETHATGUY

### ⚙️ Miscellaneous Tasks

- wait for npm bindings before publishing rolldown (#10866) by @shulaoda
- deps: update dependency @napi-rs/cli to v3.10.1 (#10889) by @renovate[bot]
- deps: update napi (#10888) by @renovate[bot]
- compress debug info archives with zstd (#10778) by @IWANABETHATGUY
- publish split debug info for release bindings (#10777) by @IWANABETHATGUY
- rolldown_utils: simplify MIME guessing and remove UTF-8 check bypass (#10884) by @shulaoda
- add npm bugs metadata for rolldown (#9694) by @kingshuaishuai
- deps: upgrade oxc to 0.150.0 (#10877) by @camc314
- deps: update rust crates (#10869) by @renovate[bot]
- deps: update dependency vite-plus to v0.3.2 (#10878) by @renovate[bot]
- deps: update rollup submodule for tests to v4.63.3 (#10880) by @rolldown-guard[bot]
- deps: update test262 submodule for tests (#10881) by @rolldown-guard[bot]
- deps: update github actions (#10867) by @renovate[bot]
- deps: update npm packages (#10868) by @renovate[bot]
- deps: update napi to v3.12.4 (#10862) by @renovate[bot]
- deps: update napi (#10861) by @renovate[bot]

### ❤️ New Contributors

* @Vladexy88x made their first contribution in [#10815](https://github.com/rolldown/rolldown/pull/10815)
* @MarshallOfSound made their first contribution in [#10739](https://github.com/rolldown/rolldown/pull/10739)
* @kingshuaishuai made their first contribution in [#9694](https://github.com/rolldown/rolldown/pull/9694)
* @ShMcK made their first contribution in [#9947](https://github.com/rolldown/rolldown/pull/9947)
* @justonemorenight made their first contribution in [#10855](https://github.com/rolldown/rolldown/pull/10855)


## [1.2.8] - 2026-09-09

### 🚀 Features

- dev: add `hotUpdate` dev option to gate the `hotUpdate` hook (#10837) by @h-a-n-a
- docs: add wrangler (#10821) by @mdong1909

### 🐛 Bug Fixes

- dev: clean stale dynamic entry references after partial scans (#10846) by @shulaoda
- include external wildcard re-exports in `OutputChunk.imports` (#10845) by @isker

### 📚 Documentation

- document dynamic entry cache merging after partial scans (#10848) by @shulaoda

### ⚡ Performance

- cache `getModuleInfo` during code splitting (#10838) by @hyfdev

### 🧪 Testing

- dev: cover stale dynamic entry references after partial scans (#10847) by @shulaoda

### ⚙️ Miscellaneous Tasks

- deps: update dependency @napi-rs/cli to v3.9.0 (#10816) by @renovate[bot]
- deps: update dependency rolldown-plugin-dts to v0.28.5 (#10827) by @renovate[bot]
- deps: update dependency vite-plus to v0.3.1 (#10842) by @renovate[bot]
- deps: upgrade oxc to 0.149.0 (#10834) by @camc314
- deps: update rust crates (#10830) by @renovate[bot]
- deps: update npm packages (#10832) by @renovate[bot]
- deps: update crate-ci/typos action to v1.50.1 (#10824) by @renovate[bot]
- deps: update test262 submodule for tests (#10836) by @rolldown-guard[bot]
- deps: update github actions (#10831) by @renovate[bot]
- deps: update dependency rust to v1.98.1 (#10819) by @renovate[bot]

### ❤️ New Contributors

* @isker made their first contribution in [#10845](https://github.com/rolldown/rolldown/pull/10845)


## [1.2.7] - 2026-09-02

### 🐛 Bug Fixes

- rolldown_binding: make `PreRenderedChunk.facadeModuleId` nullable like Rollup (#10810) by @IWANABETHATGUY
- plugin_timings: reword the warning so it does not contradict itself (#10788) by @IWANABETHATGUY
- model a facade's host import in the fold cycle check (#10743) by @ulrichstark

### 🧪 Testing

- dev: add circular reexport test (#10563) by @sapphi-red

### ⚙️ Miscellaneous Tasks

- deps: update npm packages (#10795) by @renovate[bot]
- deps: update rust crates (#10794) by @renovate[bot]
- deps: update dependency rolldown-plugin-dts to v0.28.3 (#10805) by @renovate[bot]
- renovate: disable oxc auto-updates (#10813) by @IWANABETHATGUY
- deps: upgrade oxc to 0.148.0 (#10809) by @camc314
- deps: update pnpm to v11.24.0 (#10803) by @renovate[bot]
- deps: update crate-ci/typos action to v1.50.0 (#10806) by @renovate[bot]
- deps: update test262 submodule for tests (#10808) by @rolldown-guard[bot]
- deps: update rollup submodule for tests to v4.63.1 (#10807) by @rolldown-guard[bot]
- deps: update crate-ci/typos action to v1.49.1 (#10796) by @renovate[bot]
- deps: update github actions (#10749) by @renovate[bot]


## [1.2.6] - 2026-08-26

### 🚀 Features

- minify: support property name mangling (#10374) by @Dunqing
- add `tsconfig: string` option to `transform` (#10727) by @sapphi-red
- rolldown_plugin_vite_transform: add `tsconfig` option (#10725) by @sapphi-red
- rolldown_plugin_vite_resolve: add top-level `tsconfig` option (#10724) by @sapphi-red
- dev: expose module graph queries on the dev engine handle (#10716) by @h-a-n-a

### 🐛 Bug Fixes

- dev: assign import bindings before initializing dependencies (#10783) by @h-a-n-a
- dev: copy star re-exports before initializing dependencies (#10761) by @h-a-n-a
- dev: register an empty exports object for a module without exports (#10772) by @h-a-n-a
- name the module when a `codeSplitting` group callback returns a wrong type (#10753) by @IWANABETHATGUY
- dev: map dev rename events like build watch (#10758) by @shulaoda
- clear resolution cache when `TsconfigCache::clear` is called (#10726) by @sapphi-red
- dev: resolve in-flight `ensureLatestBuildOutput` when the engine closes (#10730) by @h-a-n-a
- binding: replace undeclared BindingErrorsOr with BindingResult in hook types (#10717) by @h-a-n-a

### 🚜 Refactor

- rolldown_fs_watcher: collapse fs-watcher backends behind a single FsWatcher (#10735) by @shulaoda
- hoist invariants out of the `codeSplitting` group loop (#10744) by @IWANABETHATGUY

### 📚 Documentation

- document shared notify rename mapping (#10759) by @shulaoda
- update watch-mode internals for unified FsWatcher (#10736) by @shulaoda

### ⚡ Performance

- batch `codeSplitting` group `test` / `name` calls (#10745) by @IWANABETHATGUY
- deduplicate used symbol ref readers (#10742) by @Boshen
- reduce release debug formatting (#10728) by @Boshen
- enable compiler cache via `module.enableCompileCache()` (#10678) by @btea
- deduplicate regress codegen (#10732) by @Boshen

### 🧪 Testing

- define: add expected failure for default parameter scope (#10780) by @hyfdev
- use an absolute filename for transform tsconfig path (#10782) by @shulaoda

### ⚙️ Miscellaneous Tasks

- deps: upgrade oxc to 0.147.0 (#10767) by @camc314
- deps: update resolver dependencies (#10766) by @Boshen
- deps: update rollup submodule for tests to v4.62.5 (#10770) by @rolldown-guard[bot]
- deps: update dependency vite-plus to ^0.3.0 (#10757) by @renovate[bot]
- deps: update npm packages (#10750) by @renovate[bot]
- deps: update rust crates (#10748) by @renovate[bot]
- deps: update rust crate napi to v3.12.2 (#10738) by @renovate[bot]
- deps: update dependency rust to v1.98.0 (#10733) by @renovate[bot]
- wasi: cap each Node Test attempt with timeout to survive hangs (#10709) by @hyfdev


## [1.2.5] - 2026-08-19

### 🚀 Features

- bench: record per-suite peak memory in the node benchmark (#10704) by @IWANABETHATGUY
- binding: allocation-tracking global allocator behind the `tracking_allocator` feature (#10703) by @IWANABETHATGUY
- add armv7 android (armv7-linux-androideabi) support (#10691) by @shulaoda
- add `NAMESPACE_CONFLICT` warning for conflicting star re-exports (#7452) by @AliceLanniste

### 🐛 Bug Fixes

- rolldown_plugin_vite_reporter: avoid ANSI erase-line escape in non-TTY output (#10692) by @shulaoda
- rolldown_plugin_vite_resolve: preserve Yarn PnP virtual importer (#10591) by @Freakazo
- exclude hash placeholders from case-insensitive filename deconfliction (#10590) by @Nic-Polumeyv
- code-splitting: fold already-loaded side-effectful libraries into eager entries (#10645) by @JoviDeCroock
- dev: flush re-emitted assets when their content changes (#10637) by @btea
- renamer: rename nested `require`/`__filename`/`__dirname` bindings in CJS output (#10655) by @marcoroth
- silence two wasm-only warnings (#10668) by @IWANABETHATGUY

### 🚜 Refactor

- skip case folding for filenames with hash placeholders (#10689) by @hyfdev
- code-splitting: remove redundant synthetic statement owner (#10503) by @hyfdev
- renamer: move the cjs check into `rename_bindings_shadowing_cjs_ambient_names` (#10672) by @IWANABETHATGUY

### 📚 Documentation

- agents: point the never-edit list at the binding files that exist (#10719) by @melbinjp

### 🧪 Testing

- deconflict: pin renaming the external process binding away from the global (#10702) by @hyfdev
- dev: expect a hot update across a circular import (#10700) by @hyfdev

### ⚙️ Miscellaneous Tasks

- deps: upgrade oxc to 0.146.0 (#10707) by @Boshen
- deps: update rust crates (#10684) by @renovate[bot]
- deps: update npm packages (#10685) by @renovate[bot]
- build the benchmark comparison window from the JSON lines (#10701) by @IWANABETHATGUY
- wasi: retry the Node Test step to absorb the shared-dlmalloc flake (#10699) by @hyfdev
- append benchmark results to storage as JSON lines (#10682) by @IWANABETHATGUY
- deps: update github actions (#10683) by @renovate[bot]
- deps: update dependency rolldown-plugin-dts to v0.28.2 (#10679) by @renovate[bot]
- deps: update dependency rolldown-plugin-dts to v0.28.1 (#10674) by @renovate[bot]

### ❤️ New Contributors

* @melbinjp made their first contribution in [#10719](https://github.com/rolldown/rolldown/pull/10719)
* @Freakazo made their first contribution in [#10591](https://github.com/rolldown/rolldown/pull/10591)
* @marcoroth made their first contribution in [#10655](https://github.com/rolldown/rolldown/pull/10655)


## [1.2.4] - 2026-08-12

### 🚀 Features

- code-splitting: widen namespace extraction for already-loaded merges (#10594) by @IWANABETHATGUY

### 🐛 Bug Fixes

- binding: illegal instruction crash on Android arm64 (#10638) by @shulaoda
- code-splitting: stop negated sideEffects globs retaining modules (#10660) by @JoviDeCroock
- devtools: resolve log paths against the build cwd (#10622) by @hyfdev

### 📚 Documentation

- plugin-api: document sourcemap differences from Rollup (#10636) by @IWANABETHATGUY

### 🧪 Testing

- browser: smoke test the packed `@rolldown/browser` in a real browser page (#10634) by @hyfdev
- node-wasi: run the full node test suite against the WASI binding (#10616) by @hyfdev
- webcontainer: smoke test the packed WASI artifacts inside a WebContainer (#10626) by @hyfdev

### ⚙️ Miscellaneous Tasks

- deps: update napi (#10649) by @renovate[bot]
- deps: update esbuild for tests to 0.28.2 (#10662) by @rolldown-guard[bot]
- deps: update test262 submodule for tests (#10663) by @rolldown-guard[bot]
- deps: update npm packages (#10653) by @renovate[bot]
- deps: update github actions (#10651) by @renovate[bot]
- deps: update crate-ci/typos action to v1.49.0 (#10642) by @renovate[bot]
- deps: update dependency vite-plus to v0.2.9 (#10627) by @renovate[bot]
- deps: update rust crates (#10652) by @renovate[bot]
- deps: upgrade oxc to 0.144.0 (#10657) by @camc314
- ignore napi-rs temp files (#10658) by @camc314
- deps: tighten `@napi-rs/wasm-runtime` range to `~1.2.2` (#10615) by @hyfdev
- wasi: point the wasm skips at the right place (#10644) by @hyfdev


## [1.2.3] - 2026-08-05

### 🐛 Bug Fixes

- dev: don't let a failed watch registration abort the batch (#10548) by @shulaoda

### 🚜 Refactor

- remove deprecated `watch.notify` option (#10628) by @sapphi-red

### 📚 Documentation

- fix the dangling spec link on `generate_minified_names` (#10617) by @IWANABETHATGUY

### ⚡ Performance

- reduce finalization memory usage (#10554) by @ericclemmons
- chunk-naming: build minified export names without allocating (#10618) by @IWANABETHATGUY

### 🧪 Testing

- resolve-file-url: allow a reference id to start with a digit (#10623) by @jjb
- code-splitting: pin the already-loaded namespace-extraction boundaries (#10593) by @IWANABETHATGUY

### ⚙️ Miscellaneous Tasks

- deps: upgrade oxc to 0.143.0  (#10603) by @camc314
- deps: update rollup submodule for tests to v4.62.4 (#10607) by @rolldown-guard[bot]
- deps: update test262 submodule for tests (#10608) by @rolldown-guard[bot]

### ❤️ New Contributors

* @ericclemmons made their first contribution in [#10554](https://github.com/rolldown/rolldown/pull/10554)
* @jjb made their first contribution in [#10623](https://github.com/rolldown/rolldown/pull/10623)


## [1.2.2] - 2026-08-03

### 🚀 Features

- code-splitting: support inlining of shared deps in dynamic entries (#10526) by @nicolo-ribaudo
- plugin: time the user callbacks configured on the options (#10509) by @IWANABETHATGUY

### 🐛 Bug Fixes

- dev: force `cleanDir` off in dev mode (#10579) by @shulaoda
- dev: keep `?rolldown-lazy` proxy ids out of user `resolveId` hooks (#10580) by @btea
- initialize re-exported wrapped ESM modules at the entry chunk (#10567) by @hyfdev
- link: resolve circular star reexports as null (#10445) by @Nic-Polumeyv
- transform: transformer gate skips newer syntax that oxc can lower (#10564) by @sekyungk
- code-splitting: materialize consumer-local barrel routing when the order-wrap plan is empty (#10544) by @hyfdev
- plugin: measure plugin hooks in JavaScript, report them from Rust (#10508) by @IWANABETHATGUY
- plugin: include external dynamic imports in chunk metadata (#10557) by @hyfdev
- plugin: report plugin timings after closeBundle has run (#10521) by @IWANABETHATGUY
- browser: avoid using node builtin modules (#10542) by @sapphi-red

### 🚜 Refactor

- plugin: give the build's own clocks their own type (#10520) by @shulaoda

### 📚 Documentation

- correct stale `buildStart` comment in `ScanStageCache::merge` (#10577) by @shulaoda
- update outdated pluginutils references (#10574) by @dogledogle

### ⚡ Performance

- external: drop the runtime import from chunks that never wrap (#10517) by @IWANABETHATGUY
- plugin: clock the build only when it is being measured (#10558) by @IWANABETHATGUY

### 🧪 Testing

- vite-tests: drop the dead `@rolldown/pluginutils` pnpm override (#10575) by @IWANABETHATGUY
- transform: group the transform-target fixtures and say why each exists (#10569) by @IWANABETHATGUY
- dev: fix hmr-hot-update-hook-vite fixture on Windows (#10565) by @h-a-n-a
- dev: match Vite's renamed full-reload log (#10547) by @shulaoda

### ⚙️ Miscellaneous Tasks

- deps: update napi (#10576) by @renovate[bot]
- deps: bump `@napi-rs/wasm-runtime` to 1.2.2 (#10570) by @shulaoda
- deps: update npm packages (#10583) by @renovate[bot]
- deps: update dependency rolldown-plugin-dts to ^0.28.0 (#10588) by @renovate[bot]
- deps: update taiki-e/install-action action to v2.85.5 (#10587) by @renovate[bot]
- deps: update codspeedhq/action action to v5 (#10584) by @renovate[bot]
- deps: update github actions (#10582) by @renovate[bot]
- deps: update rust crates (#10581) by @renovate[bot]
- deps: update dependency vite-plus to v0.2.7 (#10568) by @renovate[bot]
- deps: update dependency rolldown-plugin-dts to v0.27.14 (#10531) by @renovate[bot]
- deps: update pnpm to v11.17.0 (#10571) by @renovate[bot]
- deps: update @napi-rs/wasm-runtime to 1.2.1 (#10545) by @sapphi-red

### ❤️ New Contributors

* @sekyungk made their first contribution in [#10564](https://github.com/rolldown/rolldown/pull/10564)
* @nicolo-ribaudo made their first contribution in [#10526](https://github.com/rolldown/rolldown/pull/10526)


## [1.2.1] - 2026-07-29

### 🚀 Features

- dev: support `hotUpdate` hook (#10305) by @h-a-n-a
- dev: expose `disableWatcher` through the dev engine bindings (#10474) by @shulaoda
- plugin: surface output-option callbacks in [PLUGIN_TIMINGS] (#10411) by @IWANABETHATGUY
- `import.meta.ROLLDOWN_FILE_URL_<referenceId>_<urlId>` support to pass context to `resolveFileUrl` hook (#10297) by @sapphi-red
- dev: skip the HMR update when a module's rebuilt output is unchanged (#10333) by @h-a-n-a
- code-splitting: wrap strict execution order modules on demand (#10104) by @hyfdev
- support `import.meta.ROLLDOWN_FILE_URL_*` (#10296) by @sapphi-red
- implement `resolveFileUrl` plugin hook (#10291) by @sapphi-red
- magic-string: support storeName on overwrite/update (#10312) by @IWANABETHATGUY

### 🐛 Bug Fixes

- external: keep `__toESM` when the importing module is tree-shaken (#10516) by @IWANABETHATGUY
- dev: resolve re-exports from externals through a real import (#10489) by @tbvjaos510
- code-splitting: route CJS barrel initialization per consumer (#10488) by @hyfdev
- error: align filename-pattern diagnostics with Rollup's wording (#10501) by @IWANABETHATGUY
- plugin: validate emitted prebuilt-chunk file names (#10399) by @IWANABETHATGUY
- code-splitting: point a two-argument dynamic import at the chunk that holds the module (#10479) by @hyfdev
- common: align is_path_fragment with Rollup's isPathFragment (#10398) by @IWANABETHATGUY
- code-splitting: never name an internal chunk export `then` (#10480) by @hyfdev
- code-splitting: avoid creating call-site-triggered entry facades (#10485) by @hyfdev
- code-splitting: collect top-level eager order reasons in every strict build (#10463) by @hyfdev
- code-splitting: let a cross-chunk dynamic importer carry the order trigger (#10456) by @hyfdev
- code-splitting: avoid the dynamic-entry facade when the same-chunk collapse carries the trigger (#10433) by @hyfdev
- binding: forward resolveId options.kind to callable builtin plugins (#10440) by @martijnwalraven
- dev: keep the export name of `export * as ns from` (#10476) by @tbvjaos510
- code-splitting: only split an entry facade when something else can load its chunk (#10441) by @hyfdev
- code-splitting: fold the runtime chunk back after order lowering (#10414) by @hyfdev
- runtime: don't leave default undefined for cjs that fakes __esModule (#10453) by @IWANABETHATGUY
- import-glob: escape generated string literals (#10438) by @shantanuraj
- preserve-modules: don't assume every chunk mirrors a module (#10442) by @hyfdev
- filter: treat missing hook inputs as non-matches, not panics (#10443) by @IWANABETHATGUY
- code-splitting: keep CommonJS modules wrapped under strict execution order (#10405) by @hyfdev
- code-splitting: align dynamicImports metadata with the rewritten import() specifier (#10430) by @hyfdev
- dev: skip user plugin hooks for ?rolldown-lazy proxy modules (#10426) by @unknownjedi
- treeshake: preserve side-effect-free spread arguments in manual-pure chains (#10432) by @IWANABETHATGUY
- treeshake: preserve eagerly evaluated child effects of manual pure chains (#10427) by @Nic-Polumeyv
- code-splitting: initialize pure definers behind star re-export barrels under strict execution order (#10409) by @hyfdev
- resolveId: reject string `id` filters (must be a RegExp) (#10412) by @IWANABETHATGUY
- code-splitting: collect eager order reasons for on-demand wrapping (#10387) by @hyfdev
- rolldown: apply output.paths to CJS export-star of external modules (#10406) by @IWANABETHATGUY
- dev: sourcemaps of lazily compiled chunks (#10386) by @tbvjaos510
- plugin: validate emitted file names at emitFile time (#10377) by @Nic-Polumeyv
- guarantee tokio runtime release when close rejects (#10381) by @shulaoda
- code-splitting: make strict transitive init registration deterministic and constant-time (#10320) by @hyfdev
- pair tokio runtime acquire and release on wasm to prevent premature shutdown (#10363) by @shulaoda
- don't body-demand modules from simulated facade chunk includes (#10351) by @IWANABETHATGUY
- tracing: invalid RD_LOG filter and RD_LOG_OUTPUT=json no longer panic (#10343) by @Brooooooklyn
- code-splitting: treat class definition-time global reads as order-sensitive (#10322) by @hyfdev
- code-splitting: deconflict force-included runtime helper statements (#10336) by @hyfdev
- binding: forward all missing parallel JS plugin hooks (#10345) by @Brooooooklyn
- code-splitting: re-derive chunk exec order after the runtime sweep (#10334) by @hyfdev
- types: add undefined to ExistingRawSourceMap optional properties (#10355) by @ocavue
- magic-string: validate relocate ranges before rewiring (#10327) by @IWANABETHATGUY
- add EMPTY_IMPORT_META warning for non-node CJS output (#10222) by @sapphi-red
- call `resolveFileUrl` in a deterministic order (#10330) by @sapphi-red
- magic-string: refuse repeated sendMagicString on a consumed instance (#10331) by @IWANABETHATGUY
- magic-string: refuse to use a MagicString after sendMagicString consumed it (#10326) by @IWANABETHATGUY
- magic-string: reject non-contiguous moves before rewiring the chunk list (#10311) by @IWANABETHATGUY
- handle `./foo/bar` glob pattern the same as `foo/bar` (#10313) by @sapphi-red
- magic-string: throw instead of panicking when append/prepend splits an edited chunk (#10301) by @IWANABETHATGUY
- output: skip separator for empty hoisted functions (#10310) by @hyfdev
- magic-string: don't report a change when edits cancel out (#10299) by @IWANABETHATGUY
- sourcemap: map wrapped imported callees (#10288) by @hyfdev
- magic-string: count positional inserts at index 0 on an empty source (#10306) by @IWANABETHATGUY
- magic-string: return UTF-16 code units from length() (#10295) by @IWANABETHATGUY
- output: skip separator for empty import prelude (#10289) by @hyfdev

### 🚜 Refactor

- dev: make it easier to customize the runtime (#10338) by @sapphi-red
- code-splitting: declare CJS carrier namespaces initializer-free (#10513) by @hyfdev
- rollup-tests: avoid relying on `NODE_PATH` env var resolution (#10496) by @sapphi-red
- code-splitting: derive symbol chunk ownership as pass-local link data (#10449) by @hyfdev
- plugin: share asset emission helpers between copy_module and asset_module (#10450) by @Nic-Polumeyv
- plugin: dedupe hook binding boilerplate (#10428) by @Nic-Polumeyv
- plugin: share the oxc parse preamble between import-glob and dynamic-import-vars (#10452) by @Nic-Polumeyv
- implement `GetAstBuilder` on visitor/pass types (#10424) by @overlookmotel
- pass arrays to AST builder methods (#10419) by @overlookmotel
- shorten AST builder code (#10418) by @overlookmotel
- centralize final ESM init metadata (#10376) by @hyfdev
- descriptor-based parallel-plugin detection (getParallelPluginInfo) (#10349) by @Brooooooklyn
- remove AstFactory in favor of new_* construction traits (#10353) by @Boshen
- enable oxc_ast's `disable_old_builder` feature (#10316) by @Boshen

### 📚 Documentation

- development-guide: update config.json link line reference (#10523) by @dogledogle
- clarify slash normalization for id hook filter (#10511) by @sapphi-red
- code-splitting: record the thenable-namespace rule (#10502) by @hyfdev
- clarify that `esmExternalRequirePlugin` must own its externals (#10439) by @TheAlexLichter
- add troubleshooting entry for the @rolldown/binding-... resolution error (#10390) by @Nic-Polumeyv
- add Code Splitting API reference category (#10382) by @vittorioexp

### ⚡ Performance

- use VisitJsMut in JavaScript-only AST passes (#10507) by @Boshen
- cache the resolved glob matcher for Id/ImporterId filters (#10410) by @IWANABETHATGUY
- scope_hoisting: remove `alloc` field from `ScopeHoistingFinalizer` (#10425) by @overlookmotel
- reduce string allocations (#10423) by @overlookmotel
- hmr: remove unnecessary string allocations (#10422) by @overlookmotel
- avoid allocating static strings via custom builder methods (#10421) by @overlookmotel
- pass string literals to AST builder methods (#10420) by @overlookmotel
- use VisitJs in JavaScript-only AST passes (#10396) by @Boshen
- plugin: shrink erased plugin debug vtables (#10370) by @Boshen
- reuse normalized path buffers (#10315) by @hyfdev

### 🧪 Testing

- code-splitting: pin CJS barrel fallback triggers and flag-off equivalence (#10514) by @hyfdev
- plugin: cover chunk fileName, absolute chunk name, and Windows drive names (#10400) by @IWANABETHATGUY
- code-splitting: cover a single-chunk dynamic import of a wrapped module (#10505) by @hyfdev
- file: remove the unused .dynamic_import fixture (#10481) by @hyfdev
- treeshake: reduce manual-pure fixture to a minimal smoke test, move matrix to unit tests (#10436) by @IWANABETHATGUY
- dev: run vite playgrounds under bundled dev (test-serve-bundled) (#10434) by @h-a-n-a
- stop snapshots from silently hiding user code inside the runtime region (#10431) by @hyfdev
- wasi: add tokio runtime lifecycle regression test (#10379) by @shulaoda
- dev: expect preserved hot.data in hmr-whole-chain-dispose (#10380) by @h-a-n-a
- code-splitting: pin flag-off wrapped-esm init emission (#10324) by @hyfdev
- sourcemap: fix Windows-only failures in composition fixtures (#10368) by @shulaoda
- generated-code: mark assert external in symbols_ns2 for deterministic output (#10339) by @hyfdev
- code-splitting: cover entries-aware strict init cycle (#10307) by @hyfdev
- make `just setup-vite` the only entry point that touches `vite/` (#10332) by @shulaoda
- vite-tests: reuse the shared root vite checkout (#10325) by @shulaoda
- test-dev-server: drop the vite submodule, track rolldown-canary (#10319) by @shulaoda
- vite-tests: track the latest rolldown-canary rebased onto vite main (#10318) by @shulaoda
- unify Vite in vite-test and test-dev-server (#10293) by @h-a-n-a

### ⚙️ Miscellaneous Tasks

- scope the binding artifact download to `bindings-*` (#10525) by @shulaoda
- deps: update napi (#10506) by @renovate[bot]
- deps: update rollup submodule for tests to v4.62.3 (#10494) by @rolldown-guard[bot]
- deps: upgrade oxc to 0.142.0 (#10497) by @shulaoda
- deps: update test262 submodule for tests (#10495) by @rolldown-guard[bot]
- deps: update github actions (#10460) by @renovate[bot]
- deps: update rust crates (#10462) by @renovate[bot]
- deps: update npm packages (#10461) by @renovate[bot]
- metric: alert Discord when the metric workflow fails (#10447) by @IWANABETHATGUY
- metric: mint a short-lived GitHub App token instead of a PAT (#10446) by @IWANABETHATGUY
- repo: repair dangling CLAUDE.md symlink (#10451) by @hanayashiki
- publint/package-metadata fixes and small correctness fixes (#10344) by @Brooooooklyn
- deps: update dependency vite-plus to v0.2.6 (#10404) by @renovate[bot]
- add Semgrep scan workflow (#10395) by @Boshen
- enable Windows CI with a PR label (#10375) by @hyfdev
- deps: upgrade oxc to 0.141.0 (#10373) by @camc314
- deps: update napi (#10369) by @renovate[bot]
- deps: update test262 submodule for tests (#10367) by @rolldown-guard[bot]
- deps: update taiki-e/install-action action to v2.83.3 (#10358) by @renovate[bot]
- deps: update rust crates (#10357) by @renovate[bot]
- deps: update npm packages (#10359) by @renovate[bot]
- deps: update rust crate syn to v3 (#10362) by @renovate[bot]
- deps: update rust crate oxc_sourcemap to v8.1.2 (#10356) by @renovate[bot]
- deps: update dependency vite-plus to v0.2.5 (#10329) by @renovate[bot]
- docs: migrate Netlify redirects to Void config (#10282) by @tux-tn
- deps: update dependency rust to v1.97.1 (#10317) by @renovate[bot]
- runtime: remove unused `runtime/index.js` (#10302) by @IWANABETHATGUY

### ❤️ New Contributors

* @dogledogle made their first contribution in [#10523](https://github.com/rolldown/rolldown/pull/10523)
* @tbvjaos510 made their first contribution in [#10489](https://github.com/rolldown/rolldown/pull/10489)
* @martijnwalraven made their first contribution in [#10440](https://github.com/rolldown/rolldown/pull/10440)
* @shantanuraj made their first contribution in [#10438](https://github.com/rolldown/rolldown/pull/10438)
* @Nic-Polumeyv made their first contribution in [#10450](https://github.com/rolldown/rolldown/pull/10450)
* @hanayashiki made their first contribution in [#10451](https://github.com/rolldown/rolldown/pull/10451)
* @unknownjedi made their first contribution in [#10426](https://github.com/rolldown/rolldown/pull/10426)
* @vittorioexp made their first contribution in [#10382](https://github.com/rolldown/rolldown/pull/10382)
* @tux-tn made their first contribution in [#10282](https://github.com/rolldown/rolldown/pull/10282)


## [1.2.0] - 2026-07-15

### 🚀 Features

- dev: skip shipping factories for newly imported top-level modules (#10223) by @h-a-n-a
- dev: per-client ship map for HMR patch sizing (#10208) by @h-a-n-a
- dev: client-side HMR (#10164) by @h-a-n-a
- dev: send a full-reload update to clients when a tsconfig changes (#10262) by @shulaoda
- treat `import.meta['url']` and `import.meta['ROLLUP_FILE_URL_*']` as side-effect free (#10267) by @sapphi-red
- rewrite `import.meta['url']` (#10251) by @sapphi-red
- add `FILE_NOT_FOUND` error (#10220) by @sapphi-red
- treat `import.meta.ROLLUP_FILE_URL_*` as side-effect free (#10217) by @sapphi-red

### 🐛 Bug Fixes

- sourcemap: preserve unmapped boundaries during composition (#10254) by @hyfdev
- `[format]` in `*FileNames` option for ESM format should be `es` instead of `esm` (#10214) by @sapphi-red
- sourcemap: preserve coarse mappings during composition (#10249) by @hyfdev
- rolldown_plugin_vite_import_glob: support tsconfig paths with `import.meta.glob` (#10167) by @sapphi-red
- dev: clear tsconfig caches for bare full builds (#10276) by @shulaoda
- dev: force a full rebuild when a tsconfig changes (#10261) by @shulaoda
- treat rooted drive-less module ids as absolute in preserveModules naming (#10235) by @IWANABETHATGUY
- watch: rebuild when tsconfig files change (#10258) by @shulaoda
- watch: drop tsconfig-merged transform options on each rebuild (#10257) by @shulaoda
- incorrect `EMPTY_IMPORT_META` warning for `import.meta.ROLLUP_FILE_URL_*` for CJS output (#10221) by @sapphi-red
- deconflict: rename CJS locals shadowing wrapped-ESM namespace objects (#9970) by @IWANABETHATGUY
- rolldown: drop the unused runtime module after entry-level external flattening (#10237) by @IWANABETHATGUY
- rolldown: re-propagate has_dynamic_exports to transitive star importers (#10239) by @IWANABETHATGUY
- tree-shaking: tree-shake destructured dynamic import namespace bindings (#10213) by @logaretm
- s390x: use json-escape-simd 3.1.1 for big-endian JSON escaping fix (#10211) by @satyamg1620

### 🚜 Refactor

- dev: move full-reload to client side (#10207) by @h-a-n-a
- readability follow-ups to the ReplaceWith migration (#10286) by @IWANABETHATGUY
- replace take_in-then-write-back with ReplaceWith and by-value moves (#10285) by @Boshen
- share the main resolver's cache with the transformer's tsconfig lookups (#10205) by @shulaoda
- rolldown: extract the ns star-external __reExport emission rule into LinkingMetadata (#10238) by @IWANABETHATGUY
- rolldown: unify link/generate diagnostics into a Diagnostics accumulator (#10234) by @IWANABETHATGUY
- sourcemap_filenames: drop dead sourcemap-filename plumbing (#10189) by @IWANABETHATGUY
- extract external import symbol merging into a method (#10224) by @IWANABETHATGUY
- rolldown: skip CJS namespace merging under strict execution order (#10203) by @hyfdev
- resolve the manual tsconfig per file instead of once at startup (#10200) by @shulaoda
- rolldown: route interop ESM init emission through a shared init-target view (#10202) by @hyfdev
- rolldown: collapse vestigial wrap-kind state and share chunk sort helper (#10201) by @hyfdev

### 📚 Documentation

- show plugin kinds in JSDoc and each hook's description (#10218) by @sapphi-red
- add an explanation about removing imports from external modules without any messages (#10215) by @sapphi-red

### ⚡ Performance

- sourcemap: owned merge in SourceJoiner::join (4005->5 allocs/chunk) (#10250) by @Boshen
- avoid redundant sourcemap string copies in collapse and minify paths (#10093) by @Boshen

### 🧪 Testing

- code-splitting: establish strict-order review baselines (#10287) by @hyfdev
- dev: add hot API test cases (#10181) by @h-a-n-a
- code-splitting: normalize strict execution order variants (#10277) by @hyfdev
- code-splitting: harden strict execution order coverage (#10252) by @hyfdev
- code-splitting: add strict execution order regressions (#10253) by @hyfdev

### ⚙️ Miscellaneous Tasks

- deps: update github actions (#10241) by @renovate[bot]
- deps: update oxc to 0.140.0 (#10274) by @shulaoda
- update Yunfei's GitHub username (#10275) by @hyfdev
- deps: update napi (#10260) by @renovate[bot]
- deps: update test262 submodule for tests (#10266) by @rolldown-guard[bot]
- deps: update dependency vite-plus to v0.2.4 (#10256) by @renovate[bot]
- deps: update napi (#10240) by @renovate[bot]
- deps: update oxc resolver to v11.24.2 (#10245) by @renovate[bot]
- deps: update rust crates (#10244) by @renovate[bot]
- disable Renovate updates for idna_adapter (#10248) by @shulaoda
- deps: update oxc resolver to v11.24.1 (#10232) by @renovate[bot]
- deps: update rust crate oxc_sourcemap to v8.1.1 (#10233) by @renovate[bot]
- deps: update dependency rolldown-plugin-dts to ^0.27.0 (#10206) by @renovate[bot]
- deps: upgrade sugar_path to v3 (#10230) by @hyfdev
- add `dist-*` to `.gitignore` in sourcemap-filenames/hash-final-content fixture (#10216) by @sapphi-red
- deps: update dependency rust to v1.97.0 (#10209) by @renovate[bot]

### ❤️ New Contributors

* @satyamg1620 made their first contribution in [#10211](https://github.com/rolldown/rolldown/pull/10211)


## [1.1.5] - 2026-07-08

### 🚀 Features

- detect top-level import-binding reads as execution-order sensitive (#10180) by @hyf0
- sourcemap_filenames: add a sourcemapFileNames option (#9271) by @V1OL3TF0X
- binding: record plugin hook result kind in tracing spans (#10154) by @IWANABETHATGUY
- linking: skip side-effect-free modules in per-entry reachability (#10111) by @IWANABETHATGUY
- improve error message for unresolved virtual imports (#10156) by @sapphi-red
- add descriptive metadata to plugin API (#10106) by @sapphi-red
- add `--configLoader=native` option (#10118) by @sapphi-red

### 🐛 Bug Fixes

- improve invalid annotation warnings (#10185) by @hyf0
- keep deduplicated asset filenames stable once they can be observed (#10191) by @shulaoda
- sourcemap_filenames: use public option name in pattern errors (#10188) by @IWANABETHATGUY
- sourcemap_filenames: hash prepared sourcemap content (#10178) by @hyf0
- tree-shake unused circular declarators exported via export list (#10166) by @IWANABETHATGUY
- dev: don't panic when an HMR rebuild hits an unresolved import (#10162) by @shulaoda
- propagate errors from output.globals function (#9880) by @shulaoda
- dev: revert cache mutations when a partial scan fails (#10110) by @shulaoda
- dev: update importer relationships of cached modules in incremental build (#10107) by @shulaoda
- hmr: fall back to full reload when a changed module is not registered as executed (#10132) by @shulaoda
- chunk-optimizer: follow entry facade edges in runtime placement cycle check (#10101) by @hyf0
- dev: ignore watcher events after close (#10113) by @hyf0
- emit async wrapper for TLA modules under onDemandWrapping (#10086) by @IWANABETHATGUY
- gate sideEffects:false modules' side effects on body demand (#10080) by @IWANABETHATGUY
- rolldown_plugin_vite_resolve: return empty object for `browser: false` mapped modules (#10082) by @sapphi-red
- reset the word-boundary state on newline in Hires::Boundary sourcemaps (#10025) by @shulaoda
- trim an emptied chunk's outro/intro instead of skipping past it (#10029) by @shulaoda
- test each edited chunk's own start against indent exclude ranges (#10026) by @shulaoda
- preserve sourcemap mappings for indented lines when a CJS module shares the chunk (#10074) by @hyf0

### 🚜 Refactor

- separate tree-shaking side effects from execution order sensitivity (#10168) by @hyf0
- type construct_vite_preload_call to take an ObjectPattern (#10135) by @shulaoda
- treeshake: single-source the own-export classification shared with the lazy-barrel loader (#10098) by @IWANABETHATGUY
- dev: reuse Vite's bundledDev server (#10081) by @h-a-n-a
- clippy: ban std HashMap/HashSet in favour of FxHashMap/FxHashSet (#10108) by @Boshen
- treeshake: make body demand a second module bit instead of a stmt multimap (#10097) by @IWANABETHATGUY
- seal used_symbol_refs by construction after its last writer (#10091) by @hyf0
- treeshake: replace inclusion mutual recursion with a worklist engine (#10096) by @IWANABETHATGUY
- treeshake: split include_statements.rs into focused modules (#10095) by @IWANABETHATGUY
- drop redundant is_user_defined filter on partitioned entries (#10050) by @shulaoda
- project the retained export interface out of used_symbol_refs (#10089) by @hyf0
- track used external symbols separately from used_symbol_refs (#10088) by @hyf0
- make module namespace inclusion an explicit linking metadata field (#10087) by @hyf0
- rename statement evaluation metadata (#10078) by @hyf0

### 📚 Documentation

- virtual modules user-facing id convention (#10155) by @sapphi-red
- cli: clarify disabling boolean/object flags like codeSplitting (#10153) by @IWANABETHATGUY
- chore: remove Vite+ alpha banner (#10105) by @mdong1909
- write down the used_symbol_refs contract (#10090) by @hyf0
- dev/lazy: update design and implementation (#10079) by @h-a-n-a

### ⚡ Performance

- ast_scanner: stop order-sensitivity checks once a module is flagged (#10190) by @IWANABETHATGUY
- return impl ExactSizeIterator from slice-backed accessors (#10133) by @Boshen
- binding: box dev and watcher napi futures (#10103) by @Boshen

### 🧪 Testing

- move string_wizard replace unit tests to the JS magic-string suite (#10176) by @IWANABETHATGUY
- dev: assert incremental scan state matches a fresh full build after each HMR step (#10115) by @shulaoda
- dev: restore runtime assertions of delete_file_not_used_anymore (#10112) by @shulaoda
- dev: fix flaky dev server tests in CI (#10152) by @h-a-n-a
- add regression test for #10099 (lazyBarrel drops default-import binding but keeps its property reads) (#10109) by @IWANABETHATGUY

### ⚙️ Miscellaneous Tasks

- deploy website to Void via GitHub OIDC (#10192) by @Boshen
- deps: update oxc to 0.139.0 (#10161) by @shulaoda
- deps: update test262 submodule for tests (#10160) by @rolldown-guard[bot]
- rolldown_plugin_utils: remove dead asset-url and css scaffolding (#10131) by @shulaoda
- deps: revert vite-plus to v0.2.1 (#10148) by @shulaoda
- deps: update github actions (#10141) by @renovate[bot]
- deps: update dependency rust to v1.96.1 (#10145) by @renovate[bot]
- deps: update npm packages (#10142) by @renovate[bot]
- deps: update rust crates (#10143) by @renovate[bot]
- deps: update napi to v3.10.3 (#10121) by @renovate[bot]
- rolldown_utils: remove unused time module (#10138) by @shulaoda
- remove dead CopyModulePlugin::is_active method (#10129) by @shulaoda
- remove dead LazyCompilationContext::is_lazy_module method (#10128) by @shulaoda
- remove dead BuildDiagnostic::downcast_ref method (#10127) by @shulaoda
- deps: update dependency vite-plus to v0.2.2 (#10084) by @renovate[bot]
- deps: update rust crate oxc_sourcemap to v8.1.0 (#10122) by @renovate[bot]
- deps: update crate-ci/typos action to v1.48.0 (#10124) by @renovate[bot]
- enable more clippy restriction lints (#10114) by @Boshen
- deps: update rust dependencies (#10100) by @Boshen
- deps: update oxc resolver to v11.23.0 (#10083) by @renovate[bot]

### ◀️ Revert

- Revert "chore(deps): revert vite-plus to v0.2.1" (#10157) by @h-a-n-a
- "fix(hmr): fall back to full reload when a changed module is not registered as executed (#10132)" (#10151) by @shulaoda

### ❤️ New Contributors

* @V1OL3TF0X made their first contribution in [#9271](https://github.com/rolldown/rolldown/pull/9271)


## [1.1.4] - 2026-07-01

### 🚀 Features

- disable `experimental.lazyBarrel` by default (#10071) by @shulaoda

### 🐛 Bug Fixes

- dev: disable lazy barrel in dev mode (#10060) by @shulaoda
- generate: keep full JSON interface under preserveModules namespa… (#10056) by @IWANABETHATGUY
- check finalize_other_specifiers in its own Debug attribute (#10032) by @shulaoda
- serialize the KeepAssign unused minify option as "keep_assign" (#10031) by @shulaoda
- keep fragments after the newline fragment in MagicString::last_line (#10023) by @shulaoda
- generate: undeclared JSON named exports under preserveModules (#10020) (#10027) by @IWANABETHATGUY
- deconflict: rename CJS-wrapped locals that shadow chunk-root bindings (#9921) by @IWANABETHATGUY
- rolldown: keep entry facade when a shared chunk holds another entry's module (#9997) by @hyf0
- treeshake: also bail JSON default split when the object escapes (#9996) by @IWANABETHATGUY
- don't classify await in a strict-mode function as top-level await (#9987) by @shulaoda
- avoid spurious leading newline in addon hooks (banner/footer/intro/outro) (#9989) by @shulaoda
- handle JSON default mutation bailouts (#9972) by @TheAlexLichter
- plugin: make lazy hook metadata enumerable (#9991) by @TheAlexLichter
- dev: make init errors in lazy-compiled modules catchable (#9981) by @h-a-n-a
- treeshake: keep computed-key side effects on namespace member access (#9986) by @shulaoda
- binding: validate replace plugin delimiters length instead of panicking (#9984) by @shulaoda
- reconstruct nested rest patterns in into_expression (#9980) by @IWANABETHATGUY
- reconstruct rest patterns as spread in into_expression (#9976) by @shulaoda
- preserve export keyword on multi-declarator exports under keepNames (#9974) by @shulaoda
- deterministically keep the shortest name for deduplicated assets (#9948) by @x1024
- treeshake: apply @__NO_SIDE_EFFECTS__ to cross-chunk namespace calls (#9960) by @IWANABETHATGUY

### 🚜 Refactor

- drop redundant program scope enter/leave in finalizer (#10049) by @shulaoda
- deconflict: extract collect_chunk_scope_captured_names (#10006) by @IWANABETHATGUY
- unify pre-scan multi-declarator split into one decision site (#9982) by @IWANABETHATGUY
- common: return bool from SymbolRef::is_not_reassigned (#9962) by @IWANABETHATGUY

### 📚 Documentation

- rolldown: remove outdated comment for removing parenthesized expression (#10062) by @Dunqing
- use GitHub-flavored alert for Etiquette note in contribution guide (#10012) by @IWANABETHATGUY
- replace: explain the delimiters left and right boundaries (#9985) by @shulaoda
- ast-mutation: remove stale Address Use section after pre-scan refactor (#9983) by @IWANABETHATGUY
- remove fathom (#9968) by @mdong1909
- contribution-guide: code-format main branch references (#9966) by @IWANABETHATGUY
- contribution-guide: fix stale REPL note and tidy wording (#9957) by @hyf0
- contribution-guide: clarify when to discuss before opening a PR (#9955) by @hyf0

### ⚡ Performance

- disable preserve_parens across all parse paths (#10057) by @Dunqing
- common: inline declared_symbols with SmallVec (#9920) by @IWANABETHATGUY
- common: pack TaggedSymbolRef into 8 bytes (#9919) by @IWANABETHATGUY
- sourcemap: skip newline scan on the no-sourcemap join fast path (#9936) by @Boshen

### 🧪 Testing

- dev: error in lazy module should be catchable (#9975) by @sapphi-red
- dev: reject unknown lazy compile modules (#9969) by @sapphi-red

### ⚙️ Miscellaneous Tasks

- deps: update actions/cache action to v6 (#10001) by @renovate[bot]
- trigger vite ecosystem-ci from PR comments (#10058) by @shulaoda
- deps: update napi to v3.10.0 (#10063) by @renovate[bot]
- remove unused From impl for RolldownLabelSpan (#10055) by @shulaoda
- remove dead Diagnostic::with_kind method (#10054) by @shulaoda
- remove unused StatementExt methods (#10053) by @shulaoda
- remove unused ExpressionExt methods (#10052) by @shulaoda
- remove commented-out re_export_all_names field (#10051) by @shulaoda
- deps: update pnpm to v11.9.0 (#10047) by @renovate[bot]
- remove the unused BindingGenerateHmrPatchReturn napi type (#10034) by @shulaoda
- remove the dead inline_entry_chunk_wrapping scaffolding (#10037) by @shulaoda
- deps: bump oxc_resolver to 11.22.0 (#10045) by @Boshen
- remove never-constructed MatchImportKind::_Ignore variant (#10041) by @shulaoda
- remove the unused ScheduledBuild napi struct (#10033) by @shulaoda
- remove dead compute_hmr_update_single method (#10040) by @shulaoda
- drop the redundant visited.insert in manual code splitting (#10038) by @shulaoda
- remove the dead output_assets vector in render_chunk_to_assets (#10036) by @shulaoda
- remove the unused From<String>/Display impls for BindingLogLevel (#10035) by @shulaoda
- deps: upgrade oxc to 0.138.0 and migrate to per-type AST construction (#10018) by @shulaoda
- deps: update rust crates (#9911) by @renovate[bot]
- deps: update test262 submodule for tests (#10016) by @rolldown-guard[bot]
- deps: update github actions (#9999) by @renovate[bot]
- deps: update npm packages (#10000) by @renovate[bot]

### ◀️ Revert

- "fix(plugin): make lazy hook metadata enumerable (#9991)" (#10005) by @shulaoda

### ❤️ New Contributors

* @x1024 made their first contribution in [#9948](https://github.com/rolldown/rolldown/pull/9948)


## [1.1.3] - 2026-06-24

### 🐛 Bug Fixes

- `defer_drop` crashes the browser main thread (#9942) by @shulaoda
- camel-case: correct camel case for nested values (#9933) by @kb019
- cli: display --help options in camelCase (#9941) by @IWANABETHATGUY
- preserve used re-exports under preserveModules (#9122) (#9934) by @IWANABETHATGUY
- watch: make close reentrant in event callbacks (#9904) by @hyf0
- git for windows treats symlink files as regular files (#9915) by @AliceLanniste
- dev: cancel pending full reload on build error (#9903) by @h-a-n-a
- chunking: pass plugin meta to codeSplitting groups name function (#9267) by @Kyujenius
- dev: serve assets emitted during HMR/lazy compile (vite#22596) (#9815) by @h-a-n-a
- release: dry-run step no longer publishes binding packages (#9866) by @Boshen

### 🚜 Refactor

- rolldown_common: model ModuleId as a classified Path/Virtual/Bare enum (#9927) by @Boshen
- remove unused LegacyModuleIdx (#9872) by @shulaoda
- remove unused StmtInfos::get_namespace_stmt_info (#9870) by @shulaoda
- remove unused Module::as_external_mut (#9871) by @shulaoda
- remove unused EcmaAst::is_body_empty (#9869) by @shulaoda
- drop dead is_css_module handling in resolve_dependencies (#9867) by @shulaoda
- drop redundant with_commonjs on cjs source type (#9868) by @shulaoda

### 📚 Documentation

- clarify on drafting PRs (#9952) by @h-a-n-a
- update contribution guidelines (#9944) by @fubhy
- note Rust crates don't follow semver in AGENTS.md (#9905) by @IWANABETHATGUY
- add feedback form (#9159) by @TheAlexLichter

### ⚡ Performance

- utils: avoid allocation in default_sanitize_file_name for clean names (#9928) by @Boshen
- binding: box once-per-build futures before spawn_future (#9864) by @Boshen
- utils: avoid wasted allocation in legitimize_identifier_name (#9926) by @Boshen
- rolldown: fuse the canonical-name dedup and insert in the renamer (#9900) by @Boshen
- rolldown: probe the name map once in ConflictResolver::resolve (#9899) by @Boshen
- cut two heap allocations from wrapped ESM init finalize (#9901) by @Boshen
- rolldown_plugin_vite_reporter: hoist invariant out_dir prefix out of reporter loop (#9873) by @shulaoda
- drop throwaway Vec in wrapped esm init stmt (#9878) by @shulaoda
- borrow owner_filename in build-import-analysis AddDeps (#9874) by @shulaoda

### 🧪 Testing

- cover preserveModules named export via namespace re-export (#6010) (#9937) by @IWANABETHATGUY

### ⚙️ Miscellaneous Tasks

- deps: update napi to v3.9.4 (#9954) by @shulaoda
- reduce noise from CODEOWNERS for trival changes (#9953) by @h-a-n-a
- deps: update mimalloc-safe to 0.1.64 (#9950) by @shulaoda
- deps: update rollup submodule for tests to v4.62.2 (#9931) by @rolldown-guard[bot]
- deps: test mimalloc-safe upstream-mimalloc switch in CI (#9930) by @shulaoda
- rolldown_plugin_vite_build_import_analysis: remove unused v2 code path (#9917) by @shulaoda
- rolldown_plugin_vite_manifest: remove unused is_enable_v2 code path (#9916) by @shulaoda
- rolldown_plugin_vite_asset_import_meta_url: remove unexposed native vite plugin (#9896) by @shulaoda
- rolldown_plugin_vite_asset: remove unexposed native vite plugin (#9895) by @shulaoda
- rolldown_plugin_vite_css_post: remove unexposed native vite plugin (#9894) by @shulaoda
- rolldown_plugin_vite_css: remove unexposed native vite plugin (#9893) by @shulaoda
- rolldown_plugin_vite_html_inline_proxy: remove unexposed native vite plugin (#9892) by @shulaoda
- rolldown_plugin_vite_html: remove unexposed native vite plugin (#9891) by @shulaoda
- deps: update github actions (#9909) by @renovate[bot]
- deps: update rust crate oxc_sourcemap to v8.0.2 (#9910) by @renovate[bot]
- deps: update npm packages (#9912) by @renovate[bot]
- deps: update github actions to v7 (#9913) by @renovate[bot]
- deps: update rolldown-plugin-dts to ^0.26.0 (#9897) by @renovate[bot]
- remove rolldown_filter_analyzer crate (#9865) by @Boshen

### ❤️ New Contributors

* @fubhy made their first contribution in [#9944](https://github.com/rolldown/rolldown/pull/9944)


## [1.1.2] - 2026-06-18

### 🚀 Features

- add option named for invalid return type errors for more places (#9846) by @shulaoda
- add option names for invalid return type errors (#9821) by @sapphi-red
- transform: infer decorator strictNullChecks from tsconfig (#9590) by @kylecannon
- expose React Compiler options for rolldown and Vite users (#9801) by @Boshen
- tracing: gate chrome-json trace layer behind `chrome-tracing` feature (#9773) by @hyf0
- dev: align test-dev-server with Vite dev server (#9668) by @h-a-n-a

### 🐛 Bug Fixes

- plugin_timings: point doc link to existing checks reference page (#9837) by @hyf0
- generator: correct contradictory panic message in cjs cross-chunk symbol lookup (#9836) by @hyf0
- esm: preserve with clause on export * from external (#9796) by @hyf0
- Make external_import_binding_merger deterministic (#9755) by @naruaway
- surface invalid `manualCodeSplitting` group `test` regex as an error (#9792) by @shulaoda
- avoid panic on `output.file` without a file name (#9789) by @shulaoda
- avoid O(N^2) rendering of high-volume diagnostics (#9748) (#9749) by @IWANABETHATGUY
- avoid panic on JSON numbers outside f64 range (#9788) by @shulaoda
- deps: bump mimalloc-safe to 0.1.63 to fix worker_threads segfault (#9785) by @shulaoda
- cache ESM evaluation errors (#9784) by @sapphi-red
- wrap node require helper in pure IIFE (#9783) by @kb019
- lazy-barrel: load locally-used imports on a re-exported record (#9757) by @shulaoda
- avoid dangling wrapped-ESM init call across chunks (#9502) (#9717) by @IWANABETHATGUY
- dev: detect same-second rewrites in CI poll watcher (#9736) by @h-a-n-a
- dev: force rebuild after HMR errors (#9686) by @h-a-n-a
- dev: print build errors on browser refresh after a failed build (#9652) by @h-a-n-a

### 🚜 Refactor

- single-source the chunk $N symbol-naming algorithm (#9831) by @Dunqing
- simplify common_dir helper (#9857) by @IWANABETHATGUY
- drop commondir crate in favor of in-house helper (#9849) by @Boshen
- binding: extract helpers from normalize_binding_options (#9842) by @Boshen
- move rolldown_filter_analyzer to tasks and scope oxc cfg feature (#9839) by @Boshen
- options: merge manualCodeSplitting into codeSplitting object form (#9805) by @IWANABETHATGUY
- options: support codeSplitting object form in CodeSplittingMode (#9804) by @IWANABETHATGUY
- diagnostic: reuse ByteLocator for per-source line lookup (#9762) by @IWANABETHATGUY
- remove redundant Arc around tracing spans (#9778) by @camc314
- remove unnecessary `Arc` around sourcemap sender (#9777) by @camc314
- rolldown_plugin_vite_wasm_fallback: remove the plugin (#9775) by @sapphi-red
- binding: remove infer-able `napi(ts_type)` (#9737) by @sapphi-red
- remove preprocessor span dedup (#9734) by @hyf0
- identify AST nodes by NodeId instead of Span/Address (#9609) by @IWANABETHATGUY

### 📚 Documentation

- tsconfig: align auto-discovery docs with oxc-resolver behavior (#9845) by @shulaoda
- relocate meta/design to internal-docs, split design from implementation (#9826) by @h-a-n-a
- meta: add options normalization design doc (#9818) by @IWANABETHATGUY
- document why the napi tracing feature is enabled (#9766) by @Boshen
- dev: move test-dev-server test guidance into the testing docs (#9809) by @h-a-n-a

### ⚡ Performance

- drop unused regex unicode property tables from the binding (#9848) by @Boshen
- drop urlencoding crate in favor of percent-encoding (#9851) by @Boshen
- drop owo-colors supports-colors feature in vite reporter (#9824) by @Boshen
- skip enum member value extraction for non-TypeScript modules (#9840) by @shulaoda
- rolldown: use unstable sort for itertools sorted_by at unique-key sites (#9827) by @Boshen
- cheaper deterministic ordering in external import binding merger (#9810) by @IWANABETHATGUY
- disable idna's ICU backend by pinning idna_adapter to 1.0.0 (-129 KB) (#9811) by @Boshen
- size: use unstable sort where stability is unneeded (#9803) by @Boshen
- remove num-format dependency from vite reporter (#9795) by @Boshen
- reduce js callback error size (#9776) by @Boshen
- rolldown_error: remove Debug supertrait from BuildEvent (#9798) by @Boshen
- reduce plugin hook order code size (#9761) by @Boshen
- deps: disable `infer` default features to reduce binary size (#9765) by @Boshen
- reduce pluginable monomorphization size (#9771) by @Boshen
- avoid rebuilding replace plugin values (#9764) by @Boshen
- defer link-stage-output drop to rayon workers after output is produced (#9733) by @Brooooooklyn
- tree-shaking: hoist already-included guard to call sites in inclusion DFS (#9738) by @Brooooooklyn
- renamer: dedup before allocating the owned name in add_symbol_in_root_scope (#9740) by @Brooooooklyn

### 🧪 Testing

- allocs: track allocation counts for rolldown_sourcemap (#9835) by @hyf0
- bench: add CodSpeed micro-benchmarks for rolldown_sourcemap (#9834) by @hyf0
- add cjs named export mutation test (#9823) by @sapphi-red
- dev: restore shared-page reliability conventions in AGENTS.md (#9786) by @h-a-n-a
- dev: add `AGENTS.md` test guidance for agents (#9763) by @h-a-n-a
- dev: split out initial-build-error into its own playground (#9772) by @h-a-n-a
- dev: align e2e suite with Vite and parallelize playgrounds (#9759) by @h-a-n-a
- remove unnecessary module namespace object JSON serializations in tests (#9725) by @sapphi-red
- use `assert.deepStrictEqual` instead of `assert.deepEqual` by using `assert/strict` instead of `assert` (#9724) by @sapphi-red
- hmr: add test case for #5301 (#5302) by @sapphi-red
- dev: add tests for dev-engine principles (#9720) by @h-a-n-a
- dev: align dev-engine test harness with Vite (#9684) by @h-a-n-a

### ⚙️ Miscellaneous Tasks

- deps: update napi to 3.9.3 (#9862) by @shulaoda
- deps: update oxc to 0.137.0 (#9856) by @Boshen
- re-enable default lld linker on x86_64-unknown-linux-gnu (#9855) by @Boshen
- deps: bump vite-plus to 0.2.1 (#9850) by @Boshen
- skills: translate _config.json when encoding rolldown REPL links (#9847) by @IWANABETHATGUY
- deps: update oxc_resolver and oxc_resolver_napi to 11.21.3 (#9841) by @Boshen
- pin vite-plus (vp) CLI to 0.1.24 in setup-vp (#9830) by @Boshen
- add crate/package-level CODEOWNERS (#9819) by @IWANABETHATGUY
- drop unused derive_more display feature from rolldown_plugin (#9820) by @Boshen
- remove auto-assign PR workflow (#9807) by @IWANABETHATGUY
- deps: update rollup submodule for tests to v4.62.0 (#9780) by @rolldown-guard[bot]
- deps: update esbuild for tests to 0.28.1 (#9779) by @rolldown-guard[bot]
- deps: update test262 submodule for tests (#9781) by @rolldown-guard[bot]
- deps: update oxc to 0.136.0 (#9770) by @Boshen
- add pull request template (#9756) by @sapphi-red
- clarify `rolldown_plugin_vite_*` is compatible for the same minor (#9774) by @sapphi-red
- deps: update github actions (#9745) by @renovate[bot]
- deps: update rust crates (#9747) by @renovate[bot]
- deps: update napi to v3.9.2 (#9744) by @renovate[bot]
- deps: update npm packages (#9746) by @renovate[bot]
- deps: update @napi-rs/cli and emnapi deps (#9741) by @Brooooooklyn
- generator: fix `vp fmt` on Windows (#9727) by @sapphi-red
- ban importing from `assert` and recommend `assert/strict` (#9726) by @sapphi-red

### ❤️ New Contributors

* @naruaway made their first contribution in [#9755](https://github.com/rolldown/rolldown/pull/9755)
* @kb019 made their first contribution in [#9783](https://github.com/rolldown/rolldown/pull/9783)


## [1.1.1] - 2026-06-11

### 🚀 Features

- ecmascript_utils: introduce AstFactory for AST construction (#9682) by @hyf0
- drop no-op init calls for empty wrapped-ESM modules (#9678) by @IWANABETHATGUY

### 🐛 Bug Fixes

- resolver: honor package.json#type for .jsx/.tsx extensions (#9690) (#9699) by @IWANABETHATGUY
- hmr: report the full-reload reason for the invalidate-loop case (#9708) by @hyf0
- explicit `moduleSideEffects` from a hook must take priority over the `package.json#sideEffects` (#9688) by @sapphi-red
- keep the `rolldown-runtime` name for the standalone runtime chunk (#9685) by @shulaoda
- lazy-barrel: request all exports for entry barrels on first encounter (#9672) by @shulaoda
- finalizer: skip init_*() for tree-shaken wrapped ESM owners (#9669) by @IWANABETHATGUY
- order `chunk.imports` by execution order (#9654) by @chuganzy
- vite-resolve: preserve slash separators for Sass partial exports (#9546) by @cjc0013
- cross-chunk CJS wrapper shadowed by author-local binding (#9648) by @IWANABETHATGUY

### 🚜 Refactor

- precompute wrapped-ESM init metadata in generate stage (#9712) by @IWANABETHATGUY
- ecmascript_utils: fold construction ext traits onto AstFactory and delete AstSnippet (#9702) by @hyf0
- finalizer: finish ScopeHoistingFinalizer migration to AstFactory (#9701) by @hyf0
- finalizer: migrate module_finalizers/mod.rs to AstFactory (#9700) by @hyf0
- hmr: migrate hmr finalizer to AstFactory (#9695) by @hyf0
- plugin: migrate vite_build_import_analysis to AstFactory (#9693) by @hyf0
- scanner: migrate tweak_ast_for_scanning to AstFactory (#9683) by @hyf0
- always split runtime module first (#9419) by @IWANABETHATGUY

### 📚 Documentation

- tsconfig: correct auto-discovery resolution to match TypeScript (#9714) by @shulaoda
- design: plan to unify all internal AST construction (#9673) by @hyf0
- tsconfig: align reference resolution docs with TypeScript behavior (#9641) by @shulaoda

### ⚡ Performance

- avoid per-module join Strings in scope-hoisting concatenation (#9645) by @Boshen
- avoid intermediate Strings in the ESM export clause (#9644) by @Boshen
- reuse a scratch buffer for facade namespace names in the scanner (#9642) by @Boshen
- reuse the import-matching tracker stack across named imports (#9643) by @Boshen
- avoid cloning the per-chunk export-items map in render_chunk_exports (#9639) by @Boshen
- avoid CompactStr allocation in sorted-exports membership check (#9640) by @Boshen

### 🧪 Testing

- add more `moduleSideEffects` precedence tests (#9689) by @sapphi-red
- 9651: drop shimMissingExports from regression fixture (#9674) by @IWANABETHATGUY

### ⚙️ Miscellaneous Tasks

- update react repo links (#9711) by @iiio2
- remove outdated pnpm configurations (#9666) by @btea
- deps: update github actions to v2.81.5 (#9665) by @renovate[bot]
- testing: migrate test harness off deprecated inlineDynamicImports (#9710) by @IWANABETHATGUY
- hmr: delete commented-out dead code left from old register-module codegen (#9707) by @hyf0
- deps: update napi-rs toolchain (#9706) by @shulaoda
- deps: update rollup submodule for tests to v4.61.1 (#9676) by @rolldown-guard[bot]
- deps: update test262 submodule for tests (#9677) by @rolldown-guard[bot]
- deps: update oxc to 0.135.0 (#9670) by @Boshen
- pass ALGOLIA_APP_ID and ALGOLIA_API_KEY to void deploy (#9667) by @Boshen
- deps: update github actions (#9662) by @renovate[bot]
- deps: update rust crates (#9663) by @renovate[bot]
- deps: update rolldown-plugin-dts to v0.25.2 (#9661) by @renovate[bot]
- deps: update typos to v1.47.2 (#9660) by @renovate[bot]
- deps: update docs dependencies (#9657) by @bddjr
- deps: update typos to v1.47.1 (#9655) by @renovate[bot]
- deploy website in its own workflow, only on docs output change (#9650) by @Boshen
- publish to pkg.pr.new add pm and `commentWithDev` option (#9638) by @btea

### ❤️ New Contributors

* @chuganzy made their first contribution in [#9654](https://github.com/rolldown/rolldown/pull/9654)
* @cjc0013 made their first contribution in [#9546](https://github.com/rolldown/rolldown/pull/9546)


## [1.1.0] - 2026-06-03

### 🚀 Features

- enable `experimental.lazyBarrel` by default (#9632) by @shulaoda
- `import.meta.glob` support `caseSensitive` option (#9594) by @btea
- add `SOURCEMAP_BROKEN` warning for renderChunk hook (#9601) by @sapphi-red
- add `SOURCEMAP_BROKEN` warning for transform hook (#9600) by @sapphi-red
- add `@__NO_SIDE_EFFECTS__` hint for invalid `@__PURE__` before function declarations (#9505) by @Copilot
- code-splitting: support group-local `includeDependenciesRecursively` (#9587) by @hyf0

### 🐛 Bug Fixes

- report TSCONFIG_ERROR instead of UNHANDLEABLE_ERROR for a missing tsconfig file (#9633) by @shulaoda
- browser: add missing exports and ensure consistency with `rolldown` package (#9629) by @sapphi-red
- should build test-dev-server when test-node (#9610) by @situ2001
- chunk-optimizer: refuse asymmetric merge for cyclic dynamic entries (#9320) (#9322) by @aminpaks
- dev: handle the remaining errors in dev (#9570) by @h-a-n-a
- handle slash-normalized ids with preserveModulesRoot (#9595) by @IWANABETHATGUY
- json: preserve .default access on JSON default imports (#9568) by @IWANABETHATGUY
- testing: remove unintended trigger_full_build from test harness (#9573) by @hyf0

### 🚜 Refactor

- js-regex: use regress native replace/replace_all (#9607) by @IWANABETHATGUY
- remove never-constructed `ImportStatus` variants (#9606) by @Boshen

### 📚 Documentation

- clarify that `RolldownBuild::close` method should be called in most cases (#9619) by @sapphi-red

### ⚡ Performance

- avoid unnecessary intermediate sourcemaps (#9599) by @sapphi-red

### 🧪 Testing

- add unit test for collapsing module sourcemap (#9626) by @sapphi-red
- cover vite-alias regex capture-group expansion (#9602) (#9608) by @IWANABETHATGUY

### ⚙️ Miscellaneous Tasks

- deps: update oxc_resolver to 11.21.0 (#9634) by @shulaoda
- update invalid option diagnostic link to point to Rolldown docs (#9631) by @sapphi-red
- deps: update vite+ to v0.1.24 (#9628) by @renovate[bot]
- deps: update oxc resolver to v11.20.0 (#9549) by @renovate[bot]
- deps: update dependency vite-plus to v0.1.24 (#9470) by @renovate[bot]
- deps: update npm packages (#9614) by @renovate[bot]
- deps: upgrade oxc to 0.134.0 (#9625) by @shulaoda
- deps: update crate-ci/typos action to v1.47.0 (#9620) by @renovate[bot]
- deps: update rollup submodule for tests to v4.61.0 (#9623) by @rolldown-guard[bot]
- deps: update github actions (#9613) by @renovate[bot]
- deps: update pnpm to v11.4.0 (#9616) by @renovate[bot]
- deps: update rust crates (#9615) by @renovate[bot]
- deps: update test262 submodule for tests (#9624) by @rolldown-guard[bot]
- deps: update dependency @napi-rs/cli to v3.7.0 (#9588) by @renovate[bot]
- deps: update dependency rust to v1.96.0 (#9596) by @renovate[bot]
- re-enable WASI testing with proper infrastructure (#9397) by @Boshen

### ❤️ New Contributors

* @aminpaks made their first contribution in [#9322](https://github.com/rolldown/rolldown/pull/9322)


## [1.0.3] - 2026-05-27

### 🚀 Features

- transform: respect decorator strictNullChecks option (#9580) by @kylecannon
- drop `defer` keyword (#9503) by @TheAlexLichter

### 🐛 Bug Fixes

- ci: create target dir before cargo release-oxc update (#9584) by @shulaoda
- ci: reorder prepare-release steps to avoid dirty git check failure (#9583) by @shulaoda
- testing: canonicalize temp dir early and use platform-specific separator in test262 (#9582) by @shulaoda
- testing: resolve symlinked temp dir in test262 snapshot normalization (#9581) by @shulaoda
- testing: canonicalize temp dir path in test262 snapshot normalization (#9579) by @shulaoda
- dev: `onOutput` called twice when initial build fails (#9552) by @hyf0
- dev: make `ensureCurrentBuildFinish` not returning error when engine closes (#9564) by @h-a-n-a
- oxc-runtime: route require() to CJS helper variant (#9263) (#9526) by @IWANABETHATGUY
- generator: use exporter chunk's export mode for CJS default re-exports (#9299) (#9529) by @IWANABETHATGUY
- rolldown: always run reduced-atom static cycle check (#9441) (#9514) by @IWANABETHATGUY
- apply transform.dropLabels before scanning (#9521) (#9522) by @IWANABETHATGUY
- rolldown_watcher: take `rolldown` dep through the workspace (#9510) by @Boshen
- cache: keep the scan-stage cache consistent when a build fails (#9495) by @h-a-n-a
- skip JSON default-import namespace optimization for write targets (#9484) (#9489) by @IWANABETHATGUY
- deps: skip pnpm frozen-lockfile on Netlify to dodge catalog mismatch bug (#9471) by @Boshen

### 🚜 Refactor

- oxc-runtime: use Cow for helper path construction (#9538) by @IWANABETHATGUY
- fold import defer phase drop into PreProcessor (#9524) by @IWANABETHATGUY
- distinguish `map: null` vs `map: undefined` in transform hook output (#9497) by @sapphi-red

### 📚 Documentation

- explain the policy for Rust crates (#9547) by @sapphi-red
- cache: add design doc for cache (#9544) by @h-a-n-a
- guide/troubleshooting: add TDZ error section (#9537) by @sapphi-red
- dev-engine: add design doc for dev-engine (#9479) by @h-a-n-a
- lazy-barrel: tweak some words (#9483) by @shulaoda
- lazy-barrel: expand reasoning behind LARGE_BARREL_MODULES advice (#9477) by @shulaoda

### ⚡ Performance

- generate: thread ast_table by value into codegen consumer (#9555) by @Boshen
- finalizers: replace `_reExport` construction with a direct call to avoid calling `clone_in` (#9501) by @Dunqing
- reorder hot-path boolean checks to short-circuit on cheap predicates first (#9523) by @Boshen

### 🧪 Testing

- rolldown: regression fixture for #9401 (#9418) by @IWANABETHATGUY
- failing test for #9441 (#9504) by @TheAlexLichter

### ⚙️ Miscellaneous Tasks

- deps: upgrade oxc to 0.133.0 (#9563) by @Dunqing
- deps: update crate-ci/typos action to v1.46.3 (#9576) by @renovate[bot]
- deps: update mimalloc-safe to 0.1.62 (#9577) by @shulaoda
- mimalloc-safe: update to a bug-fix branch for verification (#9569) by @shulaoda
- deps: update test262 submodule for tests (#9551) by @rolldown-guard[bot]
- point published crates' readme to root README.md (#9553) by @Boshen
- replace actions-cool/issues-helper with gh CLI (#9543) by @Boshen
- deps: update cargo-shear to 1.12.4 (#9541) by @Boshen
- deps: update taiki-e/install-action action to v2.79.4 (#9535) by @renovate[bot]
- deps: update github actions (#9532) by @renovate[bot]
- deps: update rust crates (#9534) by @renovate[bot]
- deps: update npm packages (#9533) by @renovate[bot]
- gate experimental/testing-only items to silence dead_code in publish builds (#9517) by @Boshen
- docs: deploy to Void (#9509) by @Boshen
- release: set up cargo-release-oxc for publishing crates (#9476) by @Boshen
- rolldown_plugin_lazy_compilation: add missing description (#9507) by @Boshen
- mimalloc-safe: update to a bug-fix branch for verification (#9506) by @shulaoda
- deps: update crate-ci/typos action to v1.46.2 (#9468) by @renovate[bot]

### ❤️ New Contributors

* @kylecannon made their first contribution in [#9580](https://github.com/rolldown/rolldown/pull/9580)


## [1.0.2] - 2026-05-20

### 🚀 Features

- devtools: emit package size in PackageGraphReady (#9434) by @IWANABETHATGUY
- devtools: classify package dependency types (#9427) by @IWANABETHATGUY
- devtools: map packages to modules and chunks (#9426) by @IWANABETHATGUY
- devtools: mark used packages (#9423) by @IWANABETHATGUY
- devtools: make duplicate packages discoverable (#9422) by @IWANABETHATGUY
- devtools: emit package metadata (#9421) by @IWANABETHATGUY
- update oxc to 0.132.0 (#9449) by @shulaoda
- update oxc to 0.131.0 (#9424) by @shulaoda
- allow checks.* to escalate emissions to hard errors (#9388) by @IWANABETHATGUY
- dev: support watcher options `include` and `exclude` (#9395) by @h-a-n-a
- emit warnings for invalid pure annotations (#9381) by @Kyujenius

### 🐛 Bug Fixes

- hash: keep chunk file names stable when an unrelated entry is added (#9444) by @hyf0
- call `codeSplitting.groups[].name` in deterministic order (#9457) by @sapphi-red
- dev/lazy: make `resolve_id` idempotent when the resolved id is already a lazy entry (#9439) by @h-a-n-a
- chunk-optimization: publish absorbed dynamic-entry namespace cross-chunk (#9448) by @IWANABETHATGUY
- treeshake: propagate pure annotation through compound exprs (#9431) by @Dunqing
- finalizer: skip redundant init call when barrel executes in same chunk (#9354) by @IWANABETHATGUY
- linking: initialize wrapped ESM re-export owners (#9353) by @IWANABETHATGUY
- do not inherit __toESM across chunks for named-only external imports (#9333) (#9415) by @IWANABETHATGUY
- watcher: don't write output or emit events after close() (#9328) by @situ2001
- chunk-optimization: avoid unsafe dynamic-only merges (#9398) by @IWANABETHATGUY
- cjs: rename CJS-wrapped locals that would shadow chunk-scope names (#9392) by @hyf0
- dev/lazy: watch lazy modules added in rebuilds (#9391) by @h-a-n-a

### 🚜 Refactor

- rolldown_dev: move dev example to break publish cycle (#9465) by @Boshen
- binding: drop unsafe napi string helper, hoist transform ArcStr (#9456) by @hyf0
- ecmascript_utils: split rewrite_ident_reference off JsxExt trait (#9417) by @IWANABETHATGUY
- use `ThreadsafeFunction::call_async_catch` (#9390) by @sapphi-red

### 📚 Documentation

- devtools: document @rolldown/debug usage and package graph consumption (#9435) by @IWANABETHATGUY
- replace `Inter` with system font stack in OG template SVG (#9240) by @yvbopeng
- remove `output.comments` warning as all issues have been resolved (#9393) by @sapphi-red
- in-depth: clarify @__PURE__ scope and document positions (#9389) by @Kyujenius
- readme: remove release candidate notice (#9387) by @shulaoda

### ⚡ Performance

- vite-resolve: cache importer existence checks (#9443) by @Brooooooklyn
- binding: reduce plugin string clones (#9436) by @Brooooooklyn

### 🧪 Testing

- enable `legal_comments_inline` test (#9394) by @sapphi-red

### ⚙️ Miscellaneous Tasks

- bump pnpm to v11.1.2 (#9447) by @Boshen
- deps: update rust crates (#9461) by @renovate[bot]
- deps: update rollup submodule for tests to v4.60.4 (#9453) by @rolldown-guard[bot]
- deps: update test262 submodule for tests (#9454) by @rolldown-guard[bot]
- deps: update npm packages (#9430) by @renovate[bot]
- deps: update github actions (#9429) by @renovate[bot]
- deps: update dependency rolldown-plugin-dts to v0.25.1 (#9452) by @renovate[bot]
- deps: update rust crates (#9428) by @renovate[bot]
- revert allow checks.* to escalate emissions to hard errors (#9388) (#9438) by @IWANABETHATGUY
- update mimalloc-safe to 0.1.61 (#9413) by @shulaoda
- deny `todo`, `unimplemented`, and `print_stderr` clippy lints (#9412) by @Boshen
- deps: update mimalloc-safe to 0.1.60 (#9410) by @shulaoda
- remove `pip install setuptools` workaround for node-gyp on macOS (#9370) by @sapphi-red
- renovate: disable automerge to require manual approval (#9386) by @shulaoda
- deps: update napi (#9385) by @renovate[bot]

### ❤️ New Contributors

* @yvbopeng made their first contribution in [#9240](https://github.com/rolldown/rolldown/pull/9240)


## [1.0.1] - 2026-05-13

### 🚀 Features

- experimental/lazy-barrel: advice on oversized barrel modules (#9236) by @shulaoda
- rolldown: inline optional-chain enum access (#9379) by @Dunqing
- chunk-optimization: dedupe already-loaded dynamic deps (#9305) by @IWANABETHATGUY
- binding: call moduleParsed hook in ParallelJsPlugin (#9318) by @jaehafe

### 🐛 Bug Fixes

- transform: enable `enum_eval` for `transformSync` and vite TS transform (#9325) by @Dunqing
- error: remove severity prefix from diagnostic messages (#9262) by @Kyujenius
- deps: pin pnpm to 10.23.0 to work around catalog mismatch on Netlify (#9364) by @shulaoda
- ci: pin mimalloc-safe to 0.1.58 (#9361) by @shulaoda
- dev/lazy: fix exports of lazy requests in lazy chunks (#9249) by @h-a-n-a
- rolldown_plugin_vite_resolve: handle errors in `resolveSubpathImports` callback (#9355) by @sapphi-red
- rolldown_plugin_lazy_compilation: use loadExports for fetched proxy to preserve original export names (#9132) by @h-a-n-a
- common: include offending index in HybridIndexVec panic message (#9296) by @SAY-5

### 🚜 Refactor

- ecmascript: extract semantic_builder_for_transform helper (#9326) by @Dunqing
- test: extract reusable static-import-cycle helper (#9332) by @IWANABETHATGUY

### 📚 Documentation

- clarify scope of `topLevelVar` (#9380) by @IWANABETHATGUY
- meta/design: add ast-mutation design doc (#9338) by @hyf0
- feat: add ai policy in contribution guide (#9315) by @mdong1909

### ⚡ Performance

- binding: enable mimalloc v3 to reduce idle memory (#9349) by @shulaoda

### 🧪 Testing

- mcs: cover require() in `$initial` group (#9376) by @hyf0
- add regression for CJS facade chunk merge into entry (#9351) by @IWANABETHATGUY

### ⚙️ Miscellaneous Tasks

- switch prepare-release to manual dispatch with version input (#9383) by @shulaoda
- migrate `@rolldown/pluginutils` to `rolldown/plugins` (#9317) by @shulaoda
- deps: pin libmimalloc-sys2 to 0.1.54 (#9372) by @shulaoda
- replace `igorskyflyer/action-readfile` with `cat` (#9369) by @sapphi-red
- deps: update test262 submodule for tests (#9371) by @rolldown-guard[bot]
- use app token for test dep update PRs (#9368) by @sapphi-red
- replace some actions with gh commands (#9367) by @sapphi-red
- replace action-semantic-pull-request with inline regex (#9366) by @sapphi-red
- remove pull_request_target workflows (#9188) by @Boshen
- deps: upgrade oxc to 0.130.0 (#9360) by @shulaoda
- deps: update github actions (major) (#9348) by @renovate[bot]
- deps: update github actions (#9341) by @renovate[bot]
- deps: update rust crates (#9344) by @renovate[bot]
- deps: update crate-ci/typos action to v1.46.1 (#9357) by @renovate[bot]
- deps: update npm packages (#9343) by @renovate[bot]
- deps: update pnpm to v10.33.4 (#9347) by @renovate[bot]
- deps: update dependency rolldown-plugin-dts to ^0.25.0 (#9346) by @renovate[bot]
- .claude: add rolldown-repl encoder, rename decode skill (#9352) by @IWANABETHATGUY
- deps: update crate-ci/typos action to v1.46.0 (#9345) by @renovate[bot]
- deps: update napi to v3.8.6 (#9342) by @renovate[bot]
- deps: update dependency vite-plus to v0.1.20 (#9340) by @renovate[bot]
- enable rollup chunking-form test (#9335) by @IWANABETHATGUY
- typo: fix typo in watcher options comment (#9324) by @thescripted

### ❤️ New Contributors

* @Kyujenius made their first contribution in [#9262](https://github.com/rolldown/rolldown/pull/9262)
* @SAY-5 made their first contribution in [#9296](https://github.com/rolldown/rolldown/pull/9296)
* @thescripted made their first contribution in [#9324](https://github.com/rolldown/rolldown/pull/9324)


## [1.0.0] - 2026-05-07

### 🐛 Bug Fixes

- dev/lazy: lazily compiled modules should be watched (#9301) by @h-a-n-a
- implement dynamic dominator merge logic (#9270) by @TheAlexLichter
- dev: apply __toCommonJS interop when CJS requires ESM in HMR finalizer (#9261) by @h-a-n-a

### 🚜 Refactor

- ecma_ast: tighten allocator access to enforce Sync invariant (#9278) by @IWANABETHATGUY
- scan_stage: remove stmt_infos field from EcmaView (#9276) by @IWANABETHATGUY
- link_stage: detach stmt_infos from EcmaView (#9274) by @IWANABETHATGUY
- link_stage: detach depended_runtime_helper from EcmaView to remove unsafe (#9265) by @IWANABETHATGUY
- link_stage: remove unsafe in determine_module_exports_kind (#9253) by @IWANABETHATGUY

### 📚 Documentation

- getting-started: remove RC warning for 1.0.0 release (#9310) by @shulaoda
- getting-started: update version references for 1.0.0 release (#9309) by @shulaoda
- add Vite+ tab to getting-started snippets (#9285) by @shulaoda
- lazy-barrel: clarify own-exports behavior for import-then-export records (#9298) by @shulaoda
- restructure top navigation around Learn vs Reference (#9284) by @shulaoda
- builtin-plugins: add bundle analyzer plugin docs (#9292) by @shulaoda
- design doc for reference_needed_symbols (#9264) by @IWANABETHATGUY

### ⚡ Performance

- devtools: write logs on a background thread (#9219) by @IWANABETHATGUY

### ⚙️ Miscellaneous Tasks

- mark esbuild/ts/parameter_props_use_define_for_class_fields_true as passed (#9308) by @sapphi-red
- deps: upgrade oxc to 0.129.0 (#9297) by @shulaoda
- deps: update rollup submodule for tests to v4.60.3 (#9294) by @sapphi-red
- deps: update test262 submodule for tests (#9295) by @sapphi-red
- ai: add rolldown REPL decode skill (#9245) by @Dunqing


## [1.0.0-rc.18] - 2026-04-29

### 💥 BREAKING CHANGES

- optimization: default unspecified inlineConst.mode to smart (#9248) by @IWANABETHATGUY

### 🐛 Bug Fixes

- rolldown_plugin_vite_import_glob: return error instead of panicking when virtual module uses a relative glob (#9241) by @shulaoda
- binding: treat empty inlineConst object as omitted (#9247) by @IWANABETHATGUY
- rolldown: keep enum declaration for optional-chain access (#9229) by @Dunqing
- link_stage: restore inline let-else in exports-kind filter (#9237) by @IWANABETHATGUY
- dev/lazy: avoid module reinitialization in lazy compilation patches (#9179) by @h-a-n-a
- dev: visit identifier references for runtime rewrites in HMR finalizer (#9191) by @h-a-n-a
- chunk-optimizer: pick dominator for runtime placement to avoid cycles (#9164) by @IWANABETHATGUY
- make `this.emitFile` chunk path synchronous to avoid deadlock (#9031) by @lazarv
- use sentinel id for `browser: false` ignored modules (#9192) by @shulaoda
- prevent chunk optimizer from creating import cycles (#9228) by @IWANABETHATGUY

### 🚜 Refactor

- replace tokio::sync::Mutex with std::sync::Mutex for non-IO data (#9176) by @shulaoda
- rolldown_plugin_vite_import_glob: do not rewrite import path for absolute base (#9195) by @shulaoda
- runtime_helper: wrap DependedRuntimeHelperMap in a struct (#9215) by @IWANABETHATGUY
- drop redundant clear() in determine_safely_merge_cjs_ns (#9206) by @IWANABETHATGUY
- clean up generate_lazy_export (#9208) by @IWANABETHATGUY
- bitset: return bool from set_bit to fuse guard-and-set (#9207) by @IWANABETHATGUY
- link_stage: simplify exports-kind filter and clarify safety comments (#9205) by @IWANABETHATGUY

### 📚 Documentation

- determine_module_exports_kind (#9252) by @IWANABETHATGUY
- fix dead link to esbuild ESM/CJS interop tests (#9230) by @Copilot
- remove CSS bundling references (#9234) by @shulaoda
- correct IncrementalFullBuild row in BundleMode table (#9214) by @IWANABETHATGUY
- design: add bundler data lifecycle design doc (#9212) by @hyf0
- remove minifier alpha status notices (#9202) by @sapphi-red

### ⚙️ Miscellaneous Tasks

- upgrade oxc to 0.128.0 (#9260) by @shulaoda
- deps: bump rolldown-ariadne to 0.6.0 (#9254) by @IWANABETHATGUY
- deps: update github actions (#9259) by @renovate[bot]
- deps: update github actions (#9258) by @renovate[bot]
- remove renovate overrides (#9257) by @Boshen
- use ubuntu-latest for security workflow (#9256) by @Boshen
- notify Discord around release publish (#9251) by @Boshen
- add release environment to npm publish workflow (#9250) by @Boshen
- justfile: drop the `--` separator before forwarded args in `vp run` (#9246) by @shulaoda
- deps: update test262 submodule for tests (#9243) by @sapphi-red
- add more tracing instrumentations (#9220) by @sapphi-red
- rolldown_plugin_vite_import_glob: remove outdated sourcemap doc comment (#9213) by @shulaoda
- update security workflow (#9201) by @Boshen

### ❤️ New Contributors

* @lazarv made their first contribution in [#9031](https://github.com/rolldown/rolldown/pull/9031)


## [1.0.0-rc.17] - 2026-04-22

### 🐛 Bug Fixes

- link: error on missing export between TS modules (#9197) by @IWANABETHATGUY
- rolldown_plugin_vite_import_glob: import path should not be affected by absolute base option (#9145) by @kermanx
- `this.resolve()` returns null for bare relative paths without importer (#9142) by @Copilot
- collect destructured bindings in HMR module exports (#9146) by @h-a-n-a
- esbuild-tests: handle 0.28.0 test cases (#9149) by @sapphi-red
- plugin/copy-module: honor external resolutions from other plugins (#9139) by @TheAlexLichter
- allow undefined in sourcesContent type (#9136) by @jurijzahn8019
- reduce false positives in chunk optimizer circular dependency detection (#9049) by @AlonMiz

### 🚜 Refactor

- chunk-optimizer: extract runtime-module placement into rehome_runtime_module (#9163) by @IWANABETHATGUY

### 📚 Documentation

- add design doc for sort_modules execution ordering (#9169) by @IWANABETHATGUY
- add document for `RenderedModule` (#9147) by @sapphi-red

### ⚡ Performance

- rolldown_plugin_vite_import_glob: skip self-import earlier using raw path comparison (#9193) by @shulaoda

### 🧪 Testing

- lazy: add `playground/lazy-compilation` (#7974) by @hyf0

### ⚙️ Miscellaneous Tasks

- use app token for release PR (#9198) by @Boshen
- upgrade oxc to 0.127.0 (#9194) by @Dunqing
- use oxc security action (#9196) by @Boshen
- esbuild-tests: remove some tests from ignored list as enum inline is now supported (#9184) by @sapphi-red
- deps: update dependency vite-plus to v0.1.19 (#9183) by @renovate[bot]
- use vp instead of pnpm in check-wasi-binding-deps (#9182) by @shulaoda
- verify wasm32-wasi binding deps match @rolldown/browser before publish (#9162) by @shulaoda
- deps: update esbuild for tests to 0.28.0 (#9172) by @sapphi-red
- deps: update rollup submodule for tests to v4.60.2 (#9173) by @sapphi-red
- deps: update test262 submodule for tests (#9174) by @sapphi-red
- sort_modules: fix stale async-entry sort key comment (#9170) by @IWANABETHATGUY
- deps: update npm packages (#9157) by @renovate[bot]
- deps: update dependency diff to v9 (#9158) by @renovate[bot]
- deps: update rust crates (#9156) by @renovate[bot]
- run Windows CI on PRs labeled with `ci: windows` (#9153) by @hyf0
- update-test-dependencies: run setup-rust before file changes (#9151) by @sapphi-red
- deps: update dependency rust to v1.95.0 (#9140) by @renovate[bot]

### ❤️ New Contributors

* @jurijzahn8019 made their first contribution in [#9136](https://github.com/rolldown/rolldown/pull/9136)
* @AlonMiz made their first contribution in [#9049](https://github.com/rolldown/rolldown/pull/9049)


## [1.0.0-rc.16] - 2026-04-16

### 🚀 Features

- const enum cross-module inlining support (#8796) by @Dunqing
- implement module tagging system for code splitting (#9045) by @hyf0

### 🐛 Bug Fixes

- rolldown_plugin_vite_manifest: handle duplicate chunk names for CSS entries (#9059) by @sapphi-red
- improve error message for invalid return values in function options (#9125) by @shulaoda
- await async export-star init wrappers (#9101) by @thezzisu
- never panic during diagnostic emission (#9091) by @IWANABETHATGUY
- include array rest pattern in binding_identifiers (#9112) by @IWANABETHATGUY
- rolldown: set worker thread count with ROLLDOWN_WORKER_THREADS (#9086) by @fpotter
- rolldown_plugin_lazy_compilation: escape request ID in proxy modules (#9102) by @h-a-n-a
- treat namespace member access as side-effect-free (#9099) by @IWANABETHATGUY
- relax overly conservative side-effect leak check in chunk optimizer (#9085) by @IWANABETHATGUY
- runtime: release `cb` reference after `__commonJS` factory initialization (#9067) by @hyf0-agent
- `@__NO_SIDE_EFFECTS__` wrapper should not remove dynamic imports (#9075) by @IWANABETHATGUY
- rolldown_plugin_vite_import_glob: use POSIX path join/normalize for glob resolution (#9077) by @shulaoda
- emit REQUIRE_TLA error when require() loads a module with top-level await (#9071) by @jaehafe
- emit namespace declaration for empty modules in manual chunks (#8993) by @privatenumber
- rolldown_plugin_vite_import_glob: keep common base on path segment boundary (#9070) by @shulaoda
- prevent circular runtime helper imports during facade elimination (#8989) (#9057) by @IWANABETHATGUY
- correct circular dependency check in facade elimination (#9047) by @h-a-n-a
- docs: correct dead link in CodeSplittingGroup.tags JSDoc (#9051) by @hyf0
- emit DUPLICATE_SHEBANG warning when banner contains shebang (#9026) by @IWANABETHATGUY

### 🚜 Refactor

- use semantic reference flags for member write detection (#9060) by @Dunqing
- extract UsedSymbolRefs newtype wrapper (#9130) by @IWANABETHATGUY
- dedupe await wrapping in export-star init emit (#9119) by @IWANABETHATGUY
- calculate side-effect-free function symbols on demand (#9120) by @IWANABETHATGUY
- extract duplicated top-level await handling into shared helper (#9087) by @IWANABETHATGUY
- rolldown_plugin_vite_import_glob: use split_first for get_common_base (#9069) by @shulaoda
- simplify ESM init deduplication with idiomatic insert check (#9044) by @IWANABETHATGUY

### 📚 Documentation

- document runtime module placement strategy in code-splitting design (#9062) by @IWANABETHATGUY
- clarify `options` hook behavior difference with Rollup in watch mode (#9053) by @sapphi-red
- meta/design: introduce module tags (#9017) by @hyf0

### ⚡ Performance

- convert `generate_transitive_esm_init` to iterative (#9046) by @IWANABETHATGUY

### 🧪 Testing

- merge strict/non_strict test variants using configVariants (#9089) by @IWANABETHATGUY

### ⚙️ Miscellaneous Tasks

- disable Renovate auto-updates for oxc packages (#9129) by @IWANABETHATGUY
- upgrade oxc@0.126.0 (#9127) by @Dunqing
- deps: update napi to v3.8.5 (#9126) by @renovate[bot]
- deps: update dependency @napi-rs/cli to v3.6.2 (#9123) by @renovate[bot]
- move lazy-compilation design doc (#9117) by @h-a-n-a
- deps: update dependency vite-plus to v0.1.18 (#9118) by @renovate[bot]
- deps: update dependency vite-plus to v0.1.17 (#9113) by @renovate[bot]
- deps: update oxc to v0.125.0 (#9094) by @renovate[bot]
- deps: update dependency follow-redirects to v1.16.0 [security] (#9103) by @renovate[bot]
- deps: update test262 submodule for tests (#9097) by @sapphi-red
- deps: update crate-ci/typos action to v1.45.1 (#9096) by @renovate[bot]
- deps: update rust crates (#9081) by @renovate[bot]
- deps: update npm packages (#9080) by @renovate[bot]
- remove outdated TODO in determine_module_exports_kind (#9072) by @jaehafe
- rust/test: support `extendedTests: false` shorthand in test config (#9050) by @hyf0
- ci: extract shared infra-changes anchor in path filters (#9054) by @hyf0
- add docs build check to catch dead links in PRs (#9052) by @hyf0

### ❤️ New Contributors

* @thezzisu made their first contribution in [#9101](https://github.com/rolldown/rolldown/pull/9101)
* @fpotter made their first contribution in [#9086](https://github.com/rolldown/rolldown/pull/9086)
* @jaehafe made their first contribution in [#9071](https://github.com/rolldown/rolldown/pull/9071)
* @privatenumber made their first contribution in [#8993](https://github.com/rolldown/rolldown/pull/8993)


## [1.0.0-rc.15] - 2026-04-09

### 🐛 Bug Fixes

- prevent stack overflow in `generate_transitive_esm_init` on circular dependencies (#9041) by @shulaoda

### 🚜 Refactor

- agents: rename Spec-Driven Development to Context Engineering (#9036) by @hyf0


## [1.0.0-rc.14] - 2026-04-08

### 🚀 Features

- rust: add `disable_panic_hook` feature to disable the panic hook (#9023) by @sapphi-red
- support inlineConst for CJS exports accessed through module.exports (#8976) by @h-a-n-a

### 🐛 Bug Fixes

- rolldown_plugin_vite_import_glob: normalize resolved alias path to prevent double slashes (#9032) by @shulaoda
- rolldown_plugin_vite_import_glob: follow symlinks in file scanning (#9000) by @Copilot
- wrap CJS entry modules for IIFE/UMD when using exports/module (#8999) by @IWANABETHATGUY
- emit separate __toESM bindings for mixed ESM/CJS external imports (#8987) by @IWANABETHATGUY
- tree-shake dead dynamic imports to side-effect-free CJS modules (#8529) by @sapphi-red
- skip inlining stale CJS export constants on module.exports reassignment (#8990) by @IWANABETHATGUY

### 🚜 Refactor

- generator: migrate ecma formatting from npx oxfmt to vp fmt (#9022) by @shulaoda
- generator: replace npx oxfmt with vp fmt for ecma formatting (#9021) by @shulaoda

### 📚 Documentation

- contrib-guide: mention that running tests on older Node.js version will have different stat results (#8996) by @Claude

### ⚙️ Miscellaneous Tasks

- deps: update npm packages (#9002) by @renovate[bot]
- deps: update dependency @napi-rs/cli to v3.6.1 (#9034) by @renovate[bot]
- deps: upgrade oxc to 0.124.0 (#9018) by @shulaoda
- deps: update test262 submodule for tests (#9010) by @sapphi-red
- deps: update dependency oxfmt to ^0.44.0 (#9012) by @renovate[bot]
- deps: update dependency vite to v8.0.5 [security] (#9009) by @renovate[bot]
- deps: update dependency vite-plus to v0.1.16 (#9008) by @renovate[bot]
- deps: update rust crates (#9003) by @renovate[bot]
- deps: update github-actions (#9004) by @renovate[bot]
- deps: update dependency lodash-es to v4.18.1 [security] (#8992) by @renovate[bot]
- deps: update crate-ci/typos action to v1.45.0 (#8988) by @renovate[bot]
- upgrade oxc npm packages to 0.123.0 (#8985) by @shulaoda

### ◀️ Revert

- "chore(deps): update dependency oxfmt to ^0.44.0 (#9012)" (#9019) by @shulaoda

### ❤️ New Contributors

* @Claude made their first contribution in [#8996](https://github.com/rolldown/rolldown/pull/8996)


## [1.0.0-rc.13] - 2026-04-01

### 🚀 Features

- add friendly error for unloadable virtual modules (#8955) by @sapphi-red
- better error message for unsupported CSS error (#8911) by @sapphi-red

### 🐛 Bug Fixes

- prevent chunk merging from leaking entry side effects (#8979) by @IWANABETHATGUY
- correct inlining based on module's def format and esModule flag (#8975) by @h-a-n-a
- generate init calls for excluded re-exports in strict execution order (#8858) by @IWANABETHATGUY
- consistent order for `meta.chunks` in `renderChunk` hook (#8956) by @sapphi-red
- subpath imports in glob imports failing to find files (#8885) by @kalvenschraut
- browser: bundle binding types in dts output (#8930) by @nyan-left
- ci: guard artifact download step in `vite-test-ubuntu` when build is skipped (#8934) by @Copilot
- track CJS re-export import records to fix inline const and tree-shaking (#8925) by @h-a-n-a
- use ImportKind::Import for common-chunk root computation (#8899) by @IWANABETHATGUY
- watch: clear emitted_filenames between rebuilds (#8914) by @IWANABETHATGUY
- ci: cache esbuild snapshots to avoid 429 rate limiting (#8921) by @IWANABETHATGUY
- always check circular deps in chunk optimizer (#8915) by @IWANABETHATGUY
- don't mark calls to reassigned bindings as pure (#8917) by @IWANABETHATGUY
- magic-string: throw TypeError for non-string content args (#8905) by @IWANABETHATGUY
- magic-string: add split-point validation and overwrite/update options (#8904) by @IWANABETHATGUY

### 🚜 Refactor

- pre-compute has_side_effects on ChunkCandidate (#8981) by @IWANABETHATGUY
- cleanup and simplify in dynamic_import.rs (#8927) by @ulrichstark
- rename came_from_cjs to came_from_commonjs for consistency (#8938) by @IWANABETHATGUY
- inline `create_ecma_view` return destructuring and remove redundant binding (#8932) by @shulaoda

### 📚 Documentation

- document ensure_lazy_module_initialization_order in code-splitting design doc (#8931) by @IWANABETHATGUY

### 🧪 Testing

- add regression test for runtime helper circular dependency (#8958) by @h-a-n-a
- enable 8 previously-skipped MagicString remove tests (#8945) by @IWANABETHATGUY
- add test for why PureAnnotation is needed in execution order check (#8933) by @IWANABETHATGUY

### ⚙️ Miscellaneous Tasks

- add `@emnapi/runtime` and `@emnapi/core` as direct deps of `@rolldown/browser` (#8978) by @Copilot
- deps: update dependency vite-plus to v0.1.15 (#8970) by @renovate[bot]
- deps: update dependency oxfmt to ^0.43.0 (#8969) by @renovate[bot]
- deps: upgrade oxc to 0.123.0 (#8967) by @shulaoda
- justfile: deduplicate update-submodule as alias of setup-submodule (#8968) by @shulaoda
- deps: update rollup submodule for tests to v4.60.1 (#8965) by @sapphi-red
- deps: update test262 submodule for tests (#8966) by @sapphi-red
- remove unused `type-check` scripts (#8957) by @sapphi-red
- deps: update actions/cache action to v5 (#8953) by @renovate[bot]
- deps: update npm packages to v6 (major) (#8954) by @renovate[bot]
- deps: update npm packages (#8948) by @renovate[bot]
- deps: update rust crates (#8949) by @renovate[bot]
- deps: update github-actions (#8947) by @renovate[bot]
- deps: update napi (#8943) by @renovate[bot]
- deps: update dependency rolldown-plugin-dts to ^0.23.0 (#8944) by @renovate[bot]
- regenerate testing snapshots (#8928) by @ulrichstark
- deps: update dependency rust to v1.94.1 (#8923) by @renovate[bot]

### ❤️ New Contributors

* @kalvenschraut made their first contribution in [#8885](https://github.com/rolldown/rolldown/pull/8885)
* @nyan-left made their first contribution in [#8930](https://github.com/rolldown/rolldown/pull/8930)


## [1.0.0-rc.12] - 2026-03-25

### 🚀 Features

- chunk-optimizer: skip circular dependency check when strict execution order is enabled (#8886) by @hyf0

### 🐛 Bug Fixes

- emit build warnings during watch mode rebuilds (#8897) by @IWANABETHATGUY
- lazy-barrel: load import-then-export specifiers when barrel has local exports (#8895) by @shulaoda
- correct execution order of transferred CJS init calls (#8877) by @IWANABETHATGUY
- mcs: `entriesAware` should calculate sizes without duplication (#8887) by @hyf0
- non-deterministic chunk generation (#8882) by @sapphi-red
- `is_top_level` incorrectly treats strict-mode scopes as top-level (#8878) by @Dunqing

### 🚜 Refactor

- treeshake: migrate SideEffectDetector to Oxc's MayHaveSideEffects trait (#8624) by @Dunqing

### 🧪 Testing

- make dev server tests deterministic by replacing fixed sleeps with event-driven polling (#8561) by @Boshen

### ⚙️ Miscellaneous Tasks

- deps: update dependency vite-plus to v0.1.14 (#8902) by @camc314
- deps: update dependency oxfmt to ^0.42.0 (#8891) by @renovate[bot]
- deps: update rust crate oxc_sourcemap to v6.1.1 (#8890) by @renovate[bot]
- remove Rolldown MF plan (#8883) by @shulaoda
- deps: update rollup submodule for tests to v4.60.0 (#8881) by @sapphi-red
- deps: update test262 submodule for tests (#8880) by @sapphi-red
- deps: upgrade oxc crates to 0.122.0 (#8879) by @shulaoda


## [1.0.0-rc.11] - 2026-03-23

### 🚀 Features

- magicString replace with regex (#8802) by @IWANABETHATGUY
- support `output.sourcemapExcludeSources` option (#8828) by @sapphi-red
- support `getIndentString` in MagicString (#8775) by @IWANABETHATGUY
- MagicString ignoreList support (#8773) by @IWANABETHATGUY

### 🐛 Bug Fixes

- forward test filters through vp run (#8870) by @younggglcy
- types: remove `pluginName` from `MinimalPluginContext` (#8864) by @sapphi-red
- do not report eval?.() as direct eval (#8860) by @IWANABETHATGUY
- handle negative indices, overlapping ranges, and moved content in MagicString remove (#8829) by @IWANABETHATGUY
- enable arbitrary_precision for serde_json to fix JSON float parsing (#8848) by @elderapo
- resolve TypeScript lint errors (#8841) by @Boshen
- avoid panic on multi-byte UTF-8 chars in hash placeholder iterator (#8790) by @shulaoda
- ci: skip failing vite build watch raw query test (#8840) by @Boshen
- ci: use step-level env override to unset VITE_PLUS_CLI_BIN in vite tests (#8838) by @Boshen
- ci: move vite tests into CI workflow by @Boshen
- ci: unset all VITE_PLUS_* env vars in vite-tests workflow (#8837) by @Boshen
- test: skip watch CLI tests on Windows (#8830) by @Boshen
- ci: unset VITE_PLUS_CLI_BIN in vite-tests workflow (#8832) by @Boshen
- remove redundant bare side-effect imports in entry/facade chunks (#8804) by @h-a-n-a
- magicString prepend issues (#8797) by @IWANABETHATGUY
- ci: use `vpx` instead of `vp exec` for `pkg-pr-new` (#8827) by @Boshen
- set `order` for callable plugins (#8815) by @sapphi-red
- handle reversed slice ranges with moved content (#8750) by @IWANABETHATGUY
- update emnapi to latest to avoid version mismatch (#8781) by @sapphi-red
- external.md on Windows OS (#8780) by @bddjr
- align MagicString length/isEmpty with reference magic-string (#8776) by @IWANABETHATGUY

### 🚜 Refactor

- extract canonical_ref_resolving_namespace helper (#8836) by @Boshen

### 📚 Documentation

- improve external examples for cross-platform correctness (#8786) by @hyf0-agent
- update reference to transform function in plugin API documentation (#8778) by @zOadT

### ⚡ Performance

- reduce timing of `dervie_entries_aware_chunk_name` (#8847) by @AliceLanniste
- bench: remove redundant sourcemap benchmark cases (#8825) by @Boshen
- reduce intermediate allocations in `collapse_sourcemaps` (#8821) by @Boshen
- enable parallel AST cloning on macOS (#8814) by @Boshen

### 🧪 Testing

- watch: use polling watcher and retry for watch error test (#8772) by @sapphi-red

### ⚙️ Miscellaneous Tasks

- deps: update dependency @oxc-project/types to v0.122.0 (#8873) by @renovate[bot]
- publish-to-npm: use correct vp pm publish (#8871) by @shulaoda
- justfile: skip setup-vite-plus if vp is already installed (#8862) by @Boshen
- add expectWarning option to test config (#8861) by @IWANABETHATGUY
- justfile: support windows for `just setup` (#8846) by @AliceLanniste
- deps: update rust crates (#8852) by @renovate[bot]
- deps: update endbug/version-check action to v3 (#8855) by @renovate[bot]
- deps: update github-actions (#8853) by @renovate[bot]
- deps: update dependency vitepress to v2.0.0-alpha.17 (#8854) by @renovate[bot]
- deps: update npm packages (#8851) by @renovate[bot]
- bench: use mimalloc as global allocator in bench crate (#8844) by @IWANABETHATGUY
- reuse native build artifact in node-validation job (#8826) by @Boshen
- speed up CodSpeed benchmark build by disabling LTO (#8824) by @Boshen
- remove redundant critcmp benchmark job (#8823) by @Boshen
- deps: update rust crate oxc_sourcemap to v6.1.0 (#8785) by @renovate[bot]
- node: migrate oxlint and oxfmt to Vite+ (#8813) by @Boshen
- revert namespace runners for release build jobs (#8820) by @Boshen
- migrate runners to namespace (#8819) by @Boshen
- test: relax test utils path assertion to support git worktrees (#8816) by @younggglcy
- rename `examples/lazy` to `examples/lazy-compilation` (#8789) by @shulaoda
- improve "needs reproduction" wording by @Boshen
- deps: update dependency oxlint-tsgolint to v0.17.1 (#8807) by @renovate[bot]
- enable 7 previously-skipped MagicString tests (#8771) by @IWANABETHATGUY
- upgrade oxc to 0.121.0 (#8784) by @shulaoda
- increase Windows dev drive size from 12GB to 20GB (#8779) by @Copilot

### ❤️ New Contributors

* @younggglcy made their first contribution in [#8870](https://github.com/rolldown/rolldown/pull/8870)
* @elderapo made their first contribution in [#8848](https://github.com/rolldown/rolldown/pull/8848)
* @bddjr made their first contribution in [#8780](https://github.com/rolldown/rolldown/pull/8780)
* @zOadT made their first contribution in [#8778](https://github.com/rolldown/rolldown/pull/8778)


## [1.0.0-rc.10] - 2026-03-18

### 🚀 Features

- add indentExclusionRanges property to MagicString (#8746) by @IWANABETHATGUY
- expose `oxcRuntimePlugin` (#8654) by @sapphi-red
- rust: make bundler generic over FileSystem for in-memory benchmarks (#8652) by @Boshen

### 🐛 Bug Fixes

- rolldown_plugin_vite_dynamic_import_vars: align dynamic import fast check with Vite (#8760) by @shulaoda
- renamer: handle existing bindings in nested scopes when finding unique names (#8741) by @drewolson
- pass `yarn_pnp` option where needed (#8736) by @sapphi-red
- preserve optional chaining in namespace member expr rewrite (#8712) by @Copilot
- correct UTF-16 index handling in native MagicString (#8693) by @IWANABETHATGUY
- mark failing doctests as ignore (#8700) by @Boshen
- prevent may_partial_namespace from leaking through include_module (#8682) by @IWANABETHATGUY
- ci: bump native-build cache key to invalidate stale napi-rs artifacts (#8678) by @Boshen
- `comments.annotation: false` breaking tree-shaking (#8657) by @IWANABETHATGUY
- validate filenames for NUL bytes from chunkFileNames/entryFileNames (#8644) by @IWANABETHATGUY
- dce-only minify should not set NODE_ENV to production (#8651) by @IWANABETHATGUY

### 🚜 Refactor

- rust: remove dead `CrossModuleOptimizationConfig::side_effects_free_function_optimization` (#8673) by @Dunqing
- rust: simplify `cross_module_optimization` by removing redundant scope tracking (#8672) by @Dunqing
- simplify string repeat in guess_indentor (#8753) by @IWANABETHATGUY
- consolidate custom magic-string tests into one file (#8696) by @IWANABETHATGUY
- extract CJS bailout checks from include_symbol (#8683) by @IWANABETHATGUY
- rust: remove `BindingIdentifierExt` to use `BindingIdentifier::symbol_id()` instead (#8667) by @Dunqing
- bench: add bench_preset helper and inline presets (#8658) by @Boshen
- rust: filter external modules from entries instead of mapping bit positions (#8637) by @Dunqing

### 📚 Documentation

- clarify watch mode behavior and its limitations (#8751) by @sapphi-red
- add external link icon to GitHub button in Hero section (#8731) by @thisisnkc
- guide: clarify that `inject` option is only conceptually similar to esbuild's one (#8743) by @sapphi-red
- meta/design: add `devtools.md` (#8663) by @hyf0
- add viteplus alpha announcement banner (#8668) by @shulaoda

### ⚡ Performance

- rolldown: some minor perf optimization found by autoresearch (#8730) by @Brooooooklyn
- replace Vec allocation with lazy iterator in find_hash_placeholders (#8703) by @Boshen
- replace TypedDashMap with TypedMap in CustomField (#8708) by @Boshen
- bench: remove scan benchmark binary to halve LTO link time (#8694) by @Boshen

### 🧪 Testing

- watch: increase timeout for error output (#8766) by @sapphi-red
- vite-tests: remove JS plugin tests (#8767) by @sapphi-red
- watch: add CLI exit code test (#8752) by @sapphi-red
- normalize paths on Windows even if `resolve.symlinks` is false (#8483) by @sapphi-red

### ⚙️ Miscellaneous Tasks

- correct comment in bundle-analyzer-plugin.ts (#8770) by @origami-z
- upgrade oxc to 0.120.0 (#8764) by @Boshen
- enable all test for `reset` category in MagicString.test.ts (#8749) by @IWANABETHATGUY
- deps: update test262 submodule for tests (#8742) by @sapphi-red
- deps: update oxc apps (#8734) by @renovate[bot]
- deps: update softprops/action-gh-release action to v2.6.1 (#8724) by @renovate[bot]
- deps: update npm packages (major) (#8722) by @renovate[bot]
- deps: update github-actions (major) (#8721) by @renovate[bot]
- deps: update softprops/action-gh-release action to v2.6.0 (#8720) by @renovate[bot]
- deps: update npm packages (#8718) by @renovate[bot]
- deps: update rust crates (#8717) by @renovate[bot]
- deps: update github-actions (#8716) by @renovate[bot]
- deps: update dependency oxlint-tsgolint to v0.17.0 (#8713) by @renovate[bot]
- deps: bump cargo-shear to v1.11.2 (#8711) by @Boshen
- use org level `CODE_OF_CONDUCT.md` (#8706) by @sapphi-red
- fix cache key mismatch and remove redundant cache saves (#8695) by @Boshen
- deps: update oxc apps (#8692) by @renovate[bot]
- deps: update oxc apps (#8649) by @renovate[bot]
- should do matrix out side of reusable workflows 2 (#8691) by @hyf0
- should do matrix out side of reusable workflows (#8690) by @hyf0
- deps: update dependency rolldown-plugin-dts to v0.22.5 (#8689) by @renovate[bot]
- upgrade oxc to 0.119.0 and oxc_resolver to 11.19.1 (#8686) by @Boshen
- correct if condition of `type-check` job (#8677) by @hyf0
- Gate CI type-check job on node changes (#8669) by @Copilot
- benchmark: improve codspeed build (#8665) by @Boshen
- deps: update oxc to v0.118.0 (#8650) by @renovate[bot]
- deps: update crate-ci/typos action to v1.44.0 (#8647) by @renovate[bot]
- deps: update oxc resolver to v11.19.1 (#8646) by @renovate[bot]
- deps: update dependency rust to v1.94.0 (#8648) by @renovate[bot]
- deps: update dependency rolldown-plugin-dts to v0.22.4 (#8645) by @renovate[bot]

### ◀️ Revert

- Revert "ci: Gate CI type-check job on node changes" (#8674) by @hyf0
- "chore(deps): update dependency rust to v1.94.0 (#8648)" (#8660) by @shulaoda

### ❤️ New Contributors

* @origami-z made their first contribution in [#8770](https://github.com/rolldown/rolldown/pull/8770)
* @drewolson made their first contribution in [#8741](https://github.com/rolldown/rolldown/pull/8741)
* @thisisnkc made their first contribution in [#8731](https://github.com/rolldown/rolldown/pull/8731)


## [1.0.0-rc.9] - 2026-03-11

### 💥 BREAKING CHANGES

- rename exported BindingMagicString to RolldownMagicString (#8626) by @IWANABETHATGUY

### 🚀 Features

- rolldown: add isRolldownMagicString property for reliable native detection (#8614) by @IWANABETHATGUY
- cli: align object type with rollup (#8598) by @h-a-n-a

### 🐛 Bug Fixes

- rust: circular inter-chunk imports when external dynamic imports exist (#8596) by @Dunqing
- update minify default docs from `false` to `'dce-only'` (#8620) by @shulaoda

### 💼 Other

- fix early exit in script build-node (#8617) by @h-a-n-a

### 🚜 Refactor

- binding: remove outdated TODO comment in MagicString to_string() (#8613) by @IWANABETHATGUY

### 📚 Documentation

- add viteplus alpha announcement banner (#8615) by @mdong1909
- update VitePress theme to 4.8.2 for narrow-screen layout regression (#8612) by @Copilot

### ⚡ Performance

- merge 4 integration test binaries into 1 (#8610) by @Boshen

### 🧪 Testing

- replace heavy filename_with_hash test with targeted hash fixtures (#8597) by @Boshen

### ⚙️ Miscellaneous Tasks

- ci: remove redundant `--no-run` build step from cargo-test (#8623) by @Boshen
- rust: use `cargo-shear` to toggle Cargo.toml [lib] test = bool (#8622) by @Boshen
- deps: update test262 submodule for tests (#8611) by @sapphi-red
- skip macOS CI jobs on pull requests (#8608) by @Copilot
- add rust cache to repo validation job (#8607) by @Boshen
- skip running empty bin test targets (#8605) by @Boshen
- skip building examples in cargo-test to reduce build time (#8603) by @Boshen
- switch plain workflow checkouts to taiki-e action (#8601) by @Boshen
- skip Windows CI jobs on PRs (#8600) by @Boshen
- remove unused asset module (#8594) by @shulaoda

### ◀️ Revert

- "docs: add viteplus alpha announcement banner (#8615)" (#8616) by @shulaoda


## [1.0.0-rc.8] - 2026-03-09

### 🚀 Features

- watch: enable full functional fs watcher in wasm (#8575) by @hyf0
- watch: expose debounce related options (#8572) by @hyf0

### 🐛 Bug Fixes

- detect new URL(…, import.meta.url) with no-sub template literal (#8565) by @char
- devtools: trace dynamic imports in devtools (#8581) by @cal-gooo
- watch: rebuild when a previously missing file is created (#8562) by @hyf0-agent
- watch: filter out Access events to prevent infinite rebuild loop on Linux (#8557) by @hyf0-agent

### 🚜 Refactor

- watch: remove auto watch for fail imports (#8585) by @hyf0
- fs_watcher: unify the way of constructing watcher (#8571) by @hyf0
- cli: migrate CLI to CAC (#8551) by @h-a-n-a
- switch asset module support from hard-code to builtin plugin (#8546) by @hyf0

### 📚 Documentation

- fix subject-verb agreement in why-bundlers.md (#8591) by @brandonzylstra
- maintenance: align release and canary workflow guide (#8538) by @minsoo-web
- add `format` option to directives example config (#8590) by @shulaoda
- fix: change twitter to x logo in team (#8552) by @mdong1909
- correct composable filter support explanation (#8550) by @sapphi-red

### ⚡ Performance

- testing: share tokio runtime across fixture tests (#8567) by @Boshen

### 🧪 Testing

- hmr: fix infinite loop in dev server test retry logic (#8576) by @hyf0-agent
- cli: add more cli-e2e test cases (#8548) by @h-a-n-a

### ⚙️ Miscellaneous Tasks

- docs: update in-depth/directives for `output.strict` option (#8535) by @minsoo-web
- add PNPM_HOME Dev Drive mapping to Windows CI workflows (#8589) by @Boshen
- deps: update github-actions (#8588) by @renovate[bot]
- move Windows cargo target dir to Dev Drive (#8586) by @Boshen
- optimize cache keys to fix race conditions and reduce usage (#8578) by @Boshen
- remove WASI build & test pipeline (#8580) by @Boshen
- remove unnecessary submodule checkouts (#8577) by @Boshen
- use Dev Drive for Windows CI jobs (#8574) by @Boshen
- skip redundant native binding build for browser and remove standalone job (#8573) by @Boshen
- parallelize Node tests on ubuntu, single Node 24 on macOS/windows (#8570) by @Boshen
- docs: bump @voidzero-dev/vitepress-theme to 4.8.0 (#8558) by @crusty-voidzero
- dedupe type-check from dev server workflow (#8554) by @Boshen

### ❤️ New Contributors

* @brandonzylstra made their first contribution in [#8591](https://github.com/rolldown/rolldown/pull/8591)
* @char made their first contribution in [#8565](https://github.com/rolldown/rolldown/pull/8565)
* @cal-gooo made their first contribution in [#8581](https://github.com/rolldown/rolldown/pull/8581)
* @hyf0-agent made their first contribution in [#8562](https://github.com/rolldown/rolldown/pull/8562)
* @h-a-n-a made their first contribution in [#8551](https://github.com/rolldown/rolldown/pull/8551)


## [1.0.0-rc.7] - 2026-03-05

### 💥 BREAKING CHANGES

- enable minify: 'dce-only' by default (#8465) by @IWANABETHATGUY
- settings `inlineConst: { mode: 'smart', pass: 1}`  by default (#8444) by @IWANABETHATGUY

### 🚀 Features

- binding: add original getter to BindingMagicString (#8533) by @IWANABETHATGUY
- native-magic-string: add `offset` property support (#8531) by @IWANABETHATGUY
- add `output.strict` option to control `"use strict"` directive emission (#8489) by @Copilot
- watch: expose `watcher.compareContentsForPolling` (#8526) by @hyf0
- watch: use new watcher to support watch mode (#8475) by @hyf0
- rust/watch: handle bulk-change (#8466) by @hyf0
- add LLM-friendly markdown output format to bundle analyzer plugin (#8242) by @IWANABETHATGUY

### 🐛 Bug Fixes

- expose `plugins` on `NormalizedInputOptions` for `buildStart` hook (#8521) by @Copilot
- only uppercase facade symbols in JSX preserve mode (#8519) by @IWANABETHATGUY
- binding: export BindingResult in generated dts header (#8537) by @minsoo-web
- pre-resolve paths option to avoid `invoke_sync` deadlock (#8518) by @IWANABETHATGUY
- remove debug-only jsx_preset and UntranspiledSyntaxError (#8511) by @IWANABETHATGUY
- apply `topLevelVar` to exported `const`/`let` declarations (#8507) by @IWANABETHATGUY
- rolldown_plugin_vite_web_worker_post: avoid replacing `new.target` (#8488) by @sapphi-red
- update copyright year to 2026 (#8486) by @maciekzygmunt

### 🚜 Refactor

- rust: use Oxc's SymbolFlags::ConstVariable instead of custom IsConst flag (#8543) by @Dunqing
- rust: remove FacadeScoping, use Scoping::create_symbol for facade symbols (#8540) by @Dunqing
- rust/watch: remove hacky `reset_closed_for_watch_mode` (#8530) by @hyf0
- binding: return &str instead of String in filename() getter (#8534) by @IWANABETHATGUY
- rust: remove old watch mode implementation (#8525) by @hyf0
- rust/watch: simply watch logic in the binding layer (#8516) by @hyf0
- rust/watch: tweak struct/function names (#8464) by @hyf0

### 📚 Documentation

- explain how external modules work in rolldown (#8457) by @sapphi-red
- add some diagrams using graphviz (#8499) by @sapphi-red
- use `vitepress-plugin-graphviz` (#8498) by @sapphi-red
- list s390x/ppc64le prebuilt binaries (#8495) by @crusty-voidzero
- fix error type for `RolldownBuild.generate` and others (#8490) by @sapphi-red

### ⚡ Performance

- string_wizard: reduce allocations and add ASCII fast paths (#8541) by @IWANABETHATGUY
- use IndexBitSet to replace IndexVec<XXXIdx, bool> for module/stmt inclusion tracking (#8503) by @IWANABETHATGUY
- plugin: use IndexBitSet to optimize skipped plugins checking (#8497) by @ShroXd
- rust/tla: skip compute_tla if there is no module use TLA (#8487) by @ShroXd

### 🧪 Testing

- node/watch: make watch tests run in concurrent and retry-able (#8512) by @hyf0
- add test case for static flag tree-shaking (#8476) by @IWANABETHATGUY
- migrate post-banner sourcemap-with-shebang to Rust (#8477) by @Copilot

### ⚙️ Miscellaneous Tasks

- vscode: `formatOnSave` for markdown files using oxc formatter (#8536) by @minsoo-web
- deps: update test262 submodule for tests (#8528) by @sapphi-red
- remove `retry` workaround from output paths test fixtures (#8520) by @Copilot
- docs: add Shuyuan Wang (h-a-n-a) and remove from acknowledgements (#8509) by @Copilot
- consolidate top_level_var test cases using configVariants (#8508) by @IWANABETHATGUY
- add s390x and ppc64le linux gnu targets (#8493) by @Brooooooklyn

### ◀️ Revert

- fix(rolldown): increase tokio blocking threads size for watch mode (#8517) by @hyf0

### ❤️ New Contributors

* @minsoo-web made their first contribution in [#8536](https://github.com/rolldown/rolldown/pull/8536)
* @crusty-voidzero made their first contribution in [#8495](https://github.com/rolldown/rolldown/pull/8495)
* @maciekzygmunt made their first contribution in [#8486](https://github.com/rolldown/rolldown/pull/8486)


## [1.0.0-rc.6] - 2026-02-26

### 💥 BREAKING CHANGES

- css: remove `css_entry_filenames` , `css_chunk_filenames` and related code (#8402) by @hyf0
- css: drop builtin CSS bundling to explore alternative solutions (#8399) by @hyf0

### 🚀 Features

- rust/data-url: use hash as id for data url modules to prevent long string overhead (#8420) by @hyf0
- validate bundle stays within output dir (#8441) by @sapphi-red
- rust: support `PluginOrder::PinPost` (#8417) by @hyf0
- support `ModuleType:Copy` (#8407) by @hyf0
- expose `ESTree` types from `rolldown/utils` (#8400) by @sapphi-red

### 🐛 Bug Fixes

- incorrect sourcemap when postBanner/postFooter is used with shebang (#8459) by @Copilot
- resolver: disable node_path option to align ESM resolver behavior (#8472) by @sapphi-red
- parse `.js` within `"type": "commonjs"` as ESM for now (#8470) by @sapphi-red
- case-insensitive filename conflict detection for chunk deduplication (#8458) by @Copilot
- prevent inlining CJS exports that are mutated by importers (#8456) by @IWANABETHATGUY
- parse `.cjs` / `.cts` / `.js` within `"type": "commonjs"` as CommonJS (#8455) by @sapphi-red
- plugin/copy-module: correct hooks' priority (#8423) by @hyf0
- plugin/chunk-import-map: ensure `render_chunk_meta` run after users plugin (#8422) by @hyf0
- rust: correct hooks order of `DataUriPlugin` (#8418) by @hyf0
- `jsx.preserve` should also considering tsconfig json preserve (#8324) by @IWANABETHATGUY
- `deferred_scan_data.rs "Should have resolved id: NotFound"` error (#8379) by @sapphi-red
- cli: require value for `--dir`/`-d` and `--file`/`-o` (#8378) by @Copilot
- dev: avoid mutex deadlock caused by inconsistent lock order (#8370) by @sapphi-red

### 🚜 Refactor

- watch: rename TaskStart/TaskEnd to BundleStart/BundleEnd (#8463) by @hyf0
- rust: rename `rolldown_plugin_data_uri` to `rolldown_plugin_data_url` (#8421) by @hyf0
- bindingify-build-hook: extract helper for PluginContextImpl (#8438) by @ShroXd
- give source loading a proper name (#8436) by @IWANABETHATGUY
- ban holding DashMap refs across awaits (#8362) by @sapphi-red

### 📚 Documentation

- add glob pattern usage example to input option (#8469) by @IWANABETHATGUY
- remove `https://rolldown.rs` from links in reference docs (#8454) by @sapphi-red
- mention execution order issue in `output.codeSplitting` docs (#8452) by @sapphi-red
- clarify `output.comments` behavior a bit (#8451) by @sapphi-red
- replace npmjs package links with npmx.dev (#8439) by @Boshen
- reference: add `Exported from` for values / types exported from subpath exports (#8394) by @sapphi-red
- add JSDocs for APIs exposed from subpath exports (#8393) by @sapphi-red
- reference: generate reference pages for APIs exposed from subpath exports (#8392) by @sapphi-red
- avoid pipe character in codeSplitting example to fix broken rendering (#8391) by @IWANABETHATGUY

### ⚡ Performance

- avoid redundant PathBuf allocations in resolve paths (#8435) by @Brooooooklyn
- bump to `sugar_path@2` (#8432) by @hyf0
- use flag-based convergence detection in include_statements (#8412) by @Brooooooklyn

### 🧪 Testing

- execute `_test.mjs` even if `executeOutput` is false (#8398) by @sapphi-red
- add retry to tree-shake/module-side-effects-proxy4 as it is flaky (#8397) by @sapphi-red
- avoid `expect.assertions()` as it is not concurrent test friendly (#8383) by @sapphi-red
- disable `mockReset` option (#8382) by @sapphi-red
- fix flaky failure caused by concurrent resolveId calls (#8381) by @sapphi-red

### ⚙️ Miscellaneous Tasks

- deps: update dependency rollup to v4.59.0 [security] (#8471) by @renovate[bot]
- ai/design: add design doc about watch mode (#8453) by @hyf0
- deps: update oxc resolver to v11.19.0 (#8461) by @renovate[bot]
- ai: introduce progressive spec-driven development pattern (#8446) by @hyf0
- deprecate output.legalComments (#8450) by @sapphi-red
- deps: update dependency oxlint-tsgolint to v0.15.0 (#8448) by @renovate[bot]
- ai: make CLAUDE.md a symlink of AGENTS.md (#8445) by @hyf0
- deps: update rollup submodule for tests to v4.59.0 (#8433) by @sapphi-red
- deps: update test262 submodule for tests (#8434) by @sapphi-red
- deps: update oxc to v0.115.0 (#8430) by @renovate[bot]
- deps: update oxc apps (#8429) by @renovate[bot]
- deps: update npm packages (#8426) by @renovate[bot]
- deps: update rust crate owo-colors to v4.3.0 (#8428) by @renovate[bot]
- deps: update github-actions (#8424) by @renovate[bot]
- deps: update rust crates (#8425) by @renovate[bot]
- deps: update oxc resolver to v11.18.0 (#8406) by @renovate[bot]
- deps: update dependency oxlint-tsgolint to v0.14.2 (#8405) by @renovate[bot]
- ban `expect.assertions` in all fixture tests (#8395) by @sapphi-red
- deps: update oxc apps (#8389) by @renovate[bot]
- ban `expect.assertions` in fixture tests (#8387) by @sapphi-red
- enable lint for `_config.ts` files (#8386) by @sapphi-red
- deps: update dependency oxlint-tsgolint to v0.14.1 (#8385) by @renovate[bot]


## [1.0.0-rc.5] - 2026-02-18

### 🚀 Features

- add `Visitor` to `rolldown/utils` (#8373) by @sapphi-red
- module-info: add `inputFormat` property to `ModuleInfo` (#8329) by @shulaoda
- default `treeshake.invalid_import_side_effects` to `false` (#8357) by @sapphi-red
- rolldown_utils: add `IndexBitSet` (#8343) by @sapphi-red
- rolldown_utils: add more methods and trait impls to BitSet (#8342) by @sapphi-red
- rolldown_plugin_vite_build_import_analysis: add support for `await import().then((m) => m.prop)` (#8328) by @sapphi-red
- rolldown_plugin_vite_reporter: support custom logger for build infos (#7652) by @shulaoda
- rust/mcs: support `entriesAwareMergeThreshold` (#8312) by @hyf0
- mcs: `maxSize` will split the oversized chunk with taking file relevance into account (#8277) by @hyf0
- rolldown_plugin_vite_import_glob: support template literal in glob import patterns (#8298) by @shulaoda
- rolldown_plugin_chunk_import_map: output importmap without spaces (#8297) by @sapphi-red
- add INEFFECTIVE_DYNAMIC_IMPORT warning in core (#8284) by @shulaoda
- mcs: generate more readable name for `entriesAware` chunks (#8275) by @hyf0
- mcs: support `entriesAware` (#8274) by @hyf0

### 🐛 Bug Fixes

- improve circular dependency detection in chunk optimizer (#8371) by @IWANABETHATGUY
- align `minify.compress: true` and `minify.mangle: true` with `minify: true` (#8367) by @sapphi-red
- rolldown_plugin_esm_external_require: apply conversion to UMD and IIFE outputs (#8359) by @sapphi-red
- cjs: bailout treeshaking on cjs modules that have multiple re-exports (#8348) by @hyf0
- handle member expression and this expression in JSX element name rewriting (#8323) by @IWANABETHATGUY
- pad `encode_hash_with_base` output to fixed length to prevent slice panics (#8320) by @shulaoda
- `xxhash_with_base` skips hashing when input is exactly 16 bytes (#8319) by @shulaoda
- complete `ImportKind::try_from` with missing variants and correct `url-import` to `url-token` (#8310) by @shulaoda
- mark Node.js builtin modules as side-effect-free when resolved via `external` config (#8304) by @IWANABETHATGUY
- mcs: `maxSize` should split chunks correctly based on sizes (#8289) by @hyf0

### 🚜 Refactor

- introduce `RawMangleOptions` and `RawCompressOptions` (#8366) by @sapphi-red
- mcs: refactor `apply_manual_code_splitting` into `ManualSplitter` (#8346) by @hyf0
- rolldown_plugin_vite_reporter: simplify hook registration and remove redundant state (#8322) by @shulaoda
- use set to store user defined entry modules (#8315) by @IWANABETHATGUY
- rust/mcs: collect groups into map at first for having clean and performant operations (#8313) by @hyf0
- mcs: introduce newtype `ModuleGroupOrigin` and `ModuleGroupId` (#8311) by @hyf0
- remove unnecessary `FinalizerMutableState` struct (#8303) by @shulaoda
- move module finalization into `finalize_modules` (#8302) by @shulaoda
- extract `apply_transfer_parts_mutation` into its own module (#8301) by @shulaoda
- move ESM format check into `determine_export_mode` (#8294) by @shulaoda
- remove `warnings` field from `GenerateContext` (#8293) by @shulaoda
- extract util function remove clippy supression (#8290) by @IWANABETHATGUY
- move `is_in_node_modules` to `PathExt` trait in `rolldown_std_utils` (#8286) by @shulaoda
- rolldown_plugin_vite_reporter: remove unnecessary ineffective dynamic import detection logic (#8285) by @shulaoda
- dev: inject hmr runtime to `\0rolldown/runtime.js` (#8234) by @hyf0
- improve naming in chunk_optimizer (#8287) by @IWANABETHATGUY
- simplify PostChunkOptimizationOperation from bitflags to enum (#8283) by @IWANABETHATGUY
- optimize BitSet.index_of_one to return iterator instead of Vec (#8282) by @IWANABETHATGUY

### 📚 Documentation

- change default value in `format` JSDoc from `'esm'` to `'es'` (#8372) by @shulaoda
- in-depth: remove `invalidImportSideEffects` option mention from lazy barrel optimization doc (#8355) by @sapphi-red
- mcs: clarify `minSize` constraints (#8279) by @ShroXd

### ⚡ Performance

- use IndexVec for chunk TLA detection (#8341) by @sapphi-red
- only invoke single resolve call for the same specifier and import kind (#8332) by @sapphi-red
- rolldown_plugin_vite_reporter: skip gzip computation when `report_compressed_size` is disabled (#8321) by @shulaoda

### 🧪 Testing

- use `vi.waitFor` and `expect.poll` instead of custom `waitUtil` function (#8369) by @sapphi-red
- rolldown_plugin_esm_external_require_plugin: add tests (#8358) by @sapphi-red
- add watch file tests (#8330) by @sapphi-red
- rolldown_plugin_vite_build_import_analysis: add test for dynamic import treeshaking (#8327) by @sapphi-red

### ⚙️ Miscellaneous Tasks

- prepare-release: skip workflow on forked repositories (#8368) by @shulaoda
- format more files (#8360) by @sapphi-red
- deps: update oxc to v0.114.0 (#8347) by @camc314
- deps: update test262 submodule for tests (#8354) by @sapphi-red
- deps: update crate-ci/typos action to v1.43.5 (#8350) by @renovate[bot]
- deps: update oxc apps (#8351) by @renovate[bot]
- rolldown_plugin_vite_reporter: remove unnecessary README.md (#8334) by @shulaoda
- deps: update npm packages (#8338) by @renovate[bot]
- deps: update rust crates (#8339) by @renovate[bot]
- deps: update dependency oxlint-tsgolint to v0.13.0 (#8337) by @renovate[bot]
- deps: update github-actions (#8336) by @renovate[bot]
- deps: update napi to v3.8.3 (#8331) by @renovate[bot]
- deps: update dependency oxlint-tsgolint to v0.12.2 (#8325) by @renovate[bot]
- remove unnecessary transform.decorator (#8314) by @IWANABETHATGUY
- deps: update dependency rust to v1.93.1 (#8305) by @renovate[bot]
- deps: update dependency oxlint-tsgolint to v0.12.1 (#8300) by @renovate[bot]
- deps: update oxc apps (#8296) by @renovate[bot]
- docs: don't skip for build runs without cache (#8281) by @sapphi-red


## [1.0.0-rc.4] - 2026-02-11

### 🚀 Features

- rename error name to `RolldownError` from `RollupError` (#8262) by @sapphi-red
- add hidden `resolve_tsconfig` function for Vite (#8257) by @sapphi-red
- rust: introduce `rolldown_watcher` (#8161) by @hyf0
- unify `comments` and `legalComments` into a single granular `comments` option (#8229) by @IWANABETHATGUY
- add builtin plugin for visualizing chunk graph (#8162) by @IWANABETHATGUY
- show import declaration location in AssignToImport errors (#8222) by @Copilot
- show import declaration span in CannotCallNamespace error (#8223) by @Copilot
- emit error when plugin accidentally removes runtime module symbols (#8203) by @IWANABETHATGUY
- support tsconfig loading & inputMap for `transform` (#8180) by @sapphi-red
- rolldown_plugin_vite_reporter: update warning message to link to Rolldown docs (#8205) by @sapphi-red

### 🐛 Bug Fixes

- avoid panic on untranspiled JSX syntax by reporting a diagnostic error (#8226) by @IWANABETHATGUY
- rolldown_plugin_vite_import_glob: relax absolute path check and improve invalid glob warning (#8219) by @shulaoda
- merge chunks after detect circular reference (#8154) by @IWANABETHATGUY
- rust: detect runtime module side effects based on its content (#8209) by @hyf0

### 🚜 Refactor

- rename `other` to `jsdoc` in comments options (#8256) by @IWANABETHATGUY
- rename chunk-visualize plugin with bundle-analyzer plugin (#8255) by @IWANABETHATGUY
- remove EXPORT_UNDEFINED_VARIABLE error (#8228) by @Copilot
- consolidate missing runtime symbol errors into a single diagnostic (#8220) by @IWANABETHATGUY
- stabilize `parse` and `parseSync` (#8215) by @sapphi-red
- return errors instead of panicking on builtin plugin conversion failure (#8217) by @shulaoda
- expose `parse` / `minify` / `transform` from `rolldown/utils` (#8214) by @sapphi-red
- prepare defer chunk merging (#8153) by @IWANABETHATGUY

### 📚 Documentation

- remove `<script>` escape behavior difference note from `platform` option (#8253) by @sapphi-red
- TypeScript & JSX support by plugins (#8183) by @sapphi-red

### 🧪 Testing

- ensure runtime module is preserved even if it's not used but has side effects (#8213) by @hyf0

### ⚙️ Miscellaneous Tasks

- deps: update oxc to v0.113.0 (#8267) by @renovate[bot]
- deps: update dependency oxlint-tsgolint to v0.12.0 (#8272) by @renovate[bot]
- deps: update oxc apps (#8269) by @renovate[bot]
- deps: update test262 submodule for tests (#8261) by @sapphi-red
- deps: update crate-ci/typos action to v1.43.4 (#8260) by @renovate[bot]
- deps: update dependency esbuild to v0.27.3 (#8250) by @renovate[bot]
- deps: update rust crates (#8244) by @renovate[bot]
- deps: update dependency semver to v7.7.4 (#8247) by @renovate[bot]
- deps: update github-actions (#8243) by @renovate[bot]
- deps: update npm packages (#8245) by @renovate[bot]
- deps: update oxc resolver to v11.17.1 (#8240) by @renovate[bot]
- deps: update rust crate oxc_sourcemap to v6.0.2 (#8241) by @renovate[bot]
- rust: handle ignored `RUSTSEC-2025-0141` cargo check error (#8235) by @hyf0
- deps: update dependency oxlint-tsgolint to v0.11.5 (#8233) by @renovate[bot]
- deps: update dependency rolldown-plugin-dts to ^0.22.0 (#8232) by @renovate[bot]
- deps: update crate-ci/typos action to v1.43.3 (#8225) by @renovate[bot]
- deps: update dependency rolldown-plugin-dts to v0.21.9 (#8224) by @renovate[bot]
- deps: update crate-ci/typos action to v1.43.2 (#8212) by @renovate[bot]
- remove rolldown_plugin_vite_wasm_helper (#8207) by @shulaoda
- build docs for production (#8206) by @sapphi-red


## [1.0.0-rc.3] - 2026-02-04

### 🚀 Features

- expose `RUNTIME_MODULE_ID` constant for plugin authors (#8199) by @shulaoda
- warn unsupported combination of `preserveValueImports` and `importsNotUsedAsValues` in tsconfig.json (#8169) by @sapphi-red
- sophisticated watch tracking for load dependencies (#8092) by @sapphi-red
- add `inputMap` option to `minify` / `minifySync` functions (#8138) by @sapphi-red
- consolidate same tsconfig errors (#8119) by @sapphi-red
- include tsconfig file path in error messages (#8107) by @Copilot
- lazy-barrel: support incremental build mode (#8114) by @shulaoda

### 🐛 Bug Fixes

- rust: preserve dependencies added by `this.addWatchFile` (#8198) by @hyf0
- spawn `RuntimeModuleTask` after `build_start` to avoid race condition (#8182) by @shulaoda
- rust/dev: only close after the ongoing task finished (#8147) by @hyf0
- ensure `\0rolldown/runtime.js` will go through transform hook and add test (#8093) by @hyf0
- `[name]` in `assetFileNames` does not include the directory part (#8098) by @IWANABETHATGUY
- handle external module properties in namespace imports (#8124) by @IWANABETHATGUY
- keep user-defined entry modules in their own chunks (#8047) by @IWANABETHATGUY
- avoid `Unknown resolve error` error message (#8111) by @sapphi-red

### 💼 Other

- remove warnings  for building rolldown with `not(feature = "experimental")` (#8110) by @coolreader18

### 🚜 Refactor

- move `VERSION` to `constants` directory (#8200) by @shulaoda
- simplify import symbol check using `SymbolFlags` (#8193) by @shulaoda
- extract tsconfig option and transform options merging logic (#8168) by @sapphi-red
- filter empty module_groups before sorting (#8149) by @ShroXd
- lazy-barrel: use single `remove` instead of `contains_key` + `remove` (#8123) by @shulaoda
- lazy-barrel: avoid redundant call and inline `get_barrel_normal_module` (#8122) by @shulaoda
- use logger instead of console.log for warnings (#8117) by @IWANABETHATGUY
- module-loader: remove intermediate ModuleTaskOwnerRef type (#8113) by @shulaoda
- rename ReExportExternalModule to ReExportDynamicExports (#8104) by @IWANABETHATGUY

### 📚 Documentation

- add dynamic OG image generation (#8192) by @sapphi-red
- add dynamic OG image generation (#8191) by @sapphi-red
- add dynamic OG image generation (#8179) by @Copilot
- apis: add links to option descriptions in JSDoc comments (#8167) by @sapphi-red
- apis: clarify parameters of `resolveDynamicImport` hook (#8137) by @sapphi-red
- lazy-barrel: clarify default export behavior (#8128) by @shulaoda

### ⚡ Performance

- remove unnecessary assignment for default export (#8127) by @shulaoda

### 🧪 Testing

- dev: `this.addWatchFile` dependency should be preserved after reload (#8165) by @sapphi-red
- mark flaky `transform_runtime_module` test as ignored (#8178) by @Copilot
- rolldown_sourcemap: add test for coarse segments (#8166) by @sapphi-red
- dev: correctly assert file change (#8164) by @sapphi-red
- rust: `transform_runtime_module` test shouldn't panic inside (#8151) by @hyf0
- rust: fix flakiness of rust tests (#8150) by @hyf0
- mark `output.dynamicImportInCjs` tests as passed (#8125) by @shulaoda
- lazy-barrel: add test cases for default export (#8129) by @shulaoda
- rolldown_plugin_vite_manifest: use relative path for outPath (#8101) by @shulaoda

### ⚙️ Miscellaneous Tasks

- deps: update crate-ci/typos action to v1.43.1 (#8188) by @renovate[bot]
- deps: update rust crate ts-rs to v12 (#8160) by @renovate[bot]
- deps: update crate-ci/typos action to v1.43.0 (#8175) by @renovate[bot]
- deps: update rust crates (#8157) by @renovate[bot]
- deps: update oxc to v0.112.0 (#8171) by @renovate[bot]
- deps: update rollup submodule for tests to v4.57.1 (#8176) by @sapphi-red
- deps: update test262 submodule for tests (#8177) by @sapphi-red
- deps: update dependency oxlint to v1.43.0 (#8173) by @renovate[bot]
- deps: update dependency oxfmt to ^0.28.0 (#8170) by @renovate[bot]
- deps: update dependency rolldown-plugin-dts to v0.21.8 (#8163) by @renovate[bot]
- deps: update dependency vue-router to v5 (#8159) by @renovate[bot]
- deps: update github-actions (#8158) by @renovate[bot]
- deps: update npm packages (#8156) by @renovate[bot]
- deps: update dependency oxlint-tsgolint to v0.11.4 (#8140) by @renovate[bot]
- fix clippy replacement typo (#8136) by @IWANABETHATGUY
- disallow `HashMap::new` and `HashSet::new` by clippy (#8135) by @sapphi-red
- deps: update dependency rolldown-plugin-dts to v0.21.7 (#8126) by @renovate[bot]
- deps: update oxc resolver to v11.17.0 (#8121) by @renovate[bot]
- deps: update dependency oxlint-tsgolint to v0.11.3 (#8109) by @renovate[bot]

### ❤️ New Contributors

* @coolreader18 made their first contribution in [#8110](https://github.com/rolldown/rolldown/pull/8110)


## [1.0.0-rc.2] - 2026-01-28

### 💥 BREAKING CHANGES

- expose `\0rolldown/runtime` in transform hook (#8068) by @hyf0
- rename `rolldown:runtime` to `\0rolldown/runtime.js` (#8067) by @hyf0

### 🚀 Features

- remove inlined constants in smart mode (#8085) by @sapphi-red
- allow more options for `this.emitFile` with `type: 'prebuilt-chunk'` (#8062) by @sapphi-red
- warn when both code and postBanner contain shebang (#8039) by @Copilot

### 🐛 Bug Fixes

- update the links to Rolldown docs in the error messages (#8103) by @sapphi-red
- handle tsconfig.json load errors (#8105) by @sapphi-red
- include inlined constants in namespace object (#8099) by @sapphi-red
- vite test ci (#8084) by @IWANABETHATGUY
- renamer: nested binding shadowing external module namespace in UMD/IIFE formats (#8083) by @Dunqing
- deduplicate ESM chunk imports by canonical symbol (#8059) by @IWANABETHATGUY
- refine side-effect detection for BigInt and RegExp (#8060) by @IWANABETHATGUY
- rust: use string literal span for `new URL` error diagnostic (#8043) by @valadaptive
- rust: use ModuleType::Asset for `new URL` imports (#8035) by @valadaptive
- CJS-ESM interop - property assignment on CJS module exports (#8006) by @IWANABETHATGUY
- eliminate the facade chunk if the dynamic entry module has been merged into common chunk (#8046) by @IWANABETHATGUY
- Inlining dynamic imports broken with multiple entry points (#8037) by @IWANABETHATGUY
- devtools: revert `Chunk#id` to `Chunk#chunk_id` (#8040) by @hyf0
- invert `__exportAll` parameter logic to reduce default output size (#8036) by @Copilot
- `</script` tag search should be case insensitive (#8033) by @IWANABETHATGUY
- use directory name as-is for the variable name even if the name contained `.` (#8029) by @Copilot
- dev/lazy: remove unnecessary rewrite from top level `this` to `undefined` (#8020) by @hyf0
- dev/lazy: should keep lazy entries imports for patch file (#8019) by @hyf0
- `output.generatedCode.preset: 'es2015'` was not set by default (#8026) by @sapphi-red
- node: align option validator to types (#8023) by @sapphi-red
- node: allow `output.strictExecutionOrder` by the option validator (#8022) by @sapphi-red
- types: return `this` from on / off methods of `RolldownWatcher` (#8015) by @sapphi-red

### 🚜 Refactor

- rolldown_plugin_vite_dynamic_import_vars: remove v1 implementation (#8096) by @shulaoda
- rolldown_plugin_vite_import_glob: remove v1 implementation (#8095) by @shulaoda
- lazy-barrel: restructure lazy barrel implementation (#8070) by @shulaoda
- remove `use_built_ins` and `use_spread` from internal JSX options (#8079) by @sapphi-red
- remove `experimental.transformHiresSourcemap` (#8055) by @Copilot
- rust: use `is_data_url` more consistently (#8042) by @valadaptive
- use `FxIndexMap` to store EntryPoint (#8032) by @IWANABETHATGUY
- node: add type checks that ensures validator schema is up to date with types (#8024) by @sapphi-red

### 📚 Documentation

- link to vite plugin registry (#8086) by @sapphi-red
- lazy-barrel: improve documentation and enable in sidebar (#8072) by @shulaoda
- add more examples and details (#8054) by @sapphi-red
- in-depth: add dead code elimination page (#8007) by @sapphi-red
- update status from beta to release candidate (#8012) by @shulaoda

### ⚡ Performance

- run inline-const pass for modules that are affected by inlining (#8064) by @sapphi-red

### 🧪 Testing

- lazy-barrel: use package.json sideEffects instead of plugin hook (#8077) by @shulaoda
- lazy-barrel: enable tests and add treeshake-behavior cases (#8071) by @shulaoda

### ⚙️ Miscellaneous Tasks

- deps: update crate-ci/typos action to v1.42.3 (#8087) by @renovate[bot]
- deps: update rollup submodule for tests to v4.56.0 (#8073) by @sapphi-red
- deps: update oxc to v0.111.0 (#8063) by @renovate[bot]
- deps: update dependency rolldown-plugin-dts to v0.21.6 (#8076) by @renovate[bot]
- deps: update test262 submodule for tests (#8074) by @sapphi-red
- deps: update crate-ci/typos action to v1.42.2 (#8069) by @renovate[bot]
- deps: update oxc apps (#8066) by @renovate[bot]
- remove `{@include ./foo.md}` from d.ts files (#8056) by @sapphi-red
- deps: update dependency oxlint-tsgolint to v0.11.2 (#8057) by @renovate[bot]
- deps: update github-actions (#8050) by @renovate[bot]
- deps: update npm packages (#8051) by @renovate[bot]
- deps: update rust crates (#8049) by @renovate[bot]
- debug: add IdxExt debug trait for human-readable index debugging (#8045) by @IWANABETHATGUY
- deps: update dependency rolldown-plugin-dts to v0.21.5 (#8034) by @renovate[bot]
- deps: update oxc resolver to v11.16.4 (#8031) by @renovate[bot]
- deps: update dependency rolldown-plugin-dts to v0.21.4 (#8030) by @renovate[bot]
- deps: update dependency rust to v1.93.0 (#8018) by @renovate[bot]
- archive 2025 beta changelog (#8014) by @shulaoda
- update release workflow version pattern from beta to rc (#8013) by @shulaoda

### ❤️ New Contributors

* @valadaptive made their first contribution in [#8043](https://github.com/rolldown/rolldown/pull/8043)


## [1.0.0-rc.1] - 2026-01-22

### 🚀 Features

- debug_info: add facade chunk elimination reason (#7980) by @IWANABETHATGUY
- support lazy barrel optimization (#7933) by @shulaoda
- add `experimental.lazyBarrel` option (#7908) by @shulaoda
- skip unused external modules from IIFE parameter list (#7978) by @sapphi-red
- add custom panic hook for better crash reporting (#7752) by @shulaoda
- treeshake: add `invalidImportSideEffects` option (#7958) by @shulaoda
- merge allow-extension emitted chunks (#7940) by @IWANABETHATGUY
- nativeMagicString generateMap (#7944) by @IWANABETHATGUY
- Include meta.magicString in RenderChunkMeta (#7943) by @IWANABETHATGUY
- debug_info: add debug info for eliminated facade chunks (#7946) by @IWANABETHATGUY
- stablize `strictExecutionOrder` and move to `output.strictExecutionOrder` from `experimental.strictExecutionOrder` (#7901) by @sapphi-red
- add documentation link to require() error message (#7898) by @Copilot
- add `codeSplitting: boolean` and deprecate `inlineDynamicImports` (#7870) by @hyf0
- dev: change lazy module URL to `/@vite/lazy` from `/lazy` (#7884) by @sapphi-red

### 🐛 Bug Fixes

- transform JS files containing `</script>` to escape template literals (#7987) by @IWANABETHATGUY
- apply avoid-breaking-exported-api = false to clippy.toml and fix clippy errors (#7982) by @Boshen
- pass `kind` from `this.resolve` (#7981) by @sapphi-red
- rolldown_plugin_vite_resolve: ignore yarn resolution errors and fallback to other resolvers (#7968) by @sapphi-red
- renamer: prevent renaming symbols when there no conflicts (#7936) by @Dunqing
- correct minifyInterExports when emitted chunk got merged (#7941) by @IWANABETHATGUY
- deduplicate entry points when module is both emitted and dynamically imported (#7885) by @IWANABETHATGUY
- dev: add `@vite-ignore` to lazy compilation proxy module import (#7883) by @sapphi-red

### 🚜 Refactor

- rust: enable clippy nursery lint group (#8002) by @Boshen
- rust: fix inconsistent_struct_constructor clippy lint (#7999) by @Boshen
- rust: fix needless_pass_by_ref_mut clippy lint (#7994) by @Boshen
- rust: fix unnecessary_wraps clippy lint (#7993) by @Boshen
- rust: fix enum_variant_names clippy lint (#7992) by @Boshen
- fix single_match clippy lint (#7997) by @Boshen
- rust: fix redundant_clone clippy lint (#7996) by @Boshen
- rust: rename CJS to Cjs to follow upper_case_acronyms lint (#7991) by @Boshen
- rust: remove unnecessary Box wrapper around Vec in MemberExprRef (#7990) by @Boshen
- import_record: make resolved_module optional (#7907) by @shulaoda
- remove unnecessary `.parse` (#7966) by @sapphi-red
- remove unused `ImportRecordMeta::IsPlainImport` (#7948) by @shulaoda
- proper set chunk meta (#7939) by @IWANABETHATGUY
- module_loader: remove `try_spawn_with_cache` (#7920) by @shulaoda
- link_stage: simplify `ImportStatus::NoMatch` to unit variant (#7909) by @shulaoda
- improve global scope symbol reservation in chunk deconfliction (#7906) by @IWANABETHATGUY
- simplify ast unwrapping in generate stage (#7900) by @IWANABETHATGUY
- generate_stage: optimize cross-chunk imports computation (#7889) by @shulaoda
- link_stage: move runtime require logic into match branch (#7892) by @shulaoda
- link_stage: simplify runtime require reference conditions (#7891) by @shulaoda
- link_stage: inline and simplify external dynamic import check (#7890) by @shulaoda
- generate_stage: simplify external module import collection logic (#7887) by @shulaoda
- avoid redundant module lookup in TLA computation (#7886) by @shulaoda
- dev: `devEngine.compileEntry` does not return null (#7882) by @sapphi-red
- dev: fix type errors for test HMR runtime (#7881) by @sapphi-red
- dev: move `clientId` property to `DevRuntime` base class (#7880) by @sapphi-red
- dev: generate client id in browser (#7878) by @hyf0

### 📚 Documentation

- apis: organize hook filters documentation and add composable filters section (#8003) by @sapphi-red
- update `vitepress-plugin-group-icons` (#7947) by @yuyinws
- add in-depth documentation for lazy barrel optimization (#7969) by @shulaoda
- bump theme & update activeMatch for reference (#7963) by @mdong1909
- mark `build()` API as experimental (#7954) by @sapphi-red
- enhance search functionality with improved scoring and filtering logic (#7935) by @hyf0
- add minor comments to multiple types (#7930) by @sapphi-red
- refactor advanedChunks related content to adapt manual code splitting concept (#7925) by @hyf0
- apis: add content to Bundler API page (#7926) by @sapphi-red
- apis: restructure plugin API related docs (#7924) by @sapphi-red
- add plugin API docs (#7923) by @sapphi-red
- apis: add docs to important APIs (#7913) by @sapphi-red
- move the important APIs to the top of the sidebar (#7912) by @sapphi-red
- apis: add more content to CLI documentation (#7911) by @sapphi-red
- apis: generate CLI docs from --help output (#7910) by @sapphi-red
- add fathom analytics (#7896) by @mdong1909

### ⚡ Performance

- use u32 for string indices in string_wizard and rolldown to reduce memory usage (#7989) by @IWANABETHATGUY
- rust: remove all usages of `with_scope_tree_child_ids(true)` for `SemanticBuilder` (#7995) by @Dunqing
- renamer: skip unnecessary nested scope symbol processing (#7899) by @Dunqing
- module_loader: use ArcStr for importer_id to avoid string copy (#7922) by @shulaoda
- module_loader: defer `ModuleTaskOwner` construction until needed (#7921) by @shulaoda
- renamer: optimize symbol renaming by eliminating `rename_non_root_symbol` pass (#7867) by @Dunqing

### 🧪 Testing

- add lazy barrel optimization test cases (#7967) by @shulaoda

### ⚙️ Miscellaneous Tasks

- remove lazy barrel option (#8010) by @shulaoda
- mark watch API as experimental (#8004) by @sapphi-red
- deps: update dependency lodash-es to v4.17.23 [security] (#8001) by @renovate[bot]
- git ignore zed local config (#7988) by @IWANABETHATGUY
- setup publint for published packages (#7972) by @Copilot
- enable `tagged_template_transform ` uncondionally (#7975) by @IWANABETHATGUY
- deps: update oxc to v0.110.0 (#7964) by @renovate[bot]
- deps: update oxc apps (#7962) by @renovate[bot]
- ai: add upgrade-oxc Claude skill (#7957) by @Boshen
- deps: update rollup submodule for tests to v4.55.2 (#7959) by @sapphi-red
- deps: update test262 submodule for tests (#7960) by @sapphi-red
- deps: update crate-ci/typos action to v1.42.1 (#7961) by @renovate[bot]
- deps: update rust crates (#7951) by @renovate[bot]
- deps: update npm packages (#7953) by @renovate[bot]
- deps: update github-actions (#7952) by @renovate[bot]
- deps: update npm packages (#7950) by @renovate[bot]
- format magic-string test before write to disk (#7945) by @IWANABETHATGUY
- deps: update dependency rolldown-plugin-dts to ^0.21.0 (#7915) by @renovate[bot]
- deps: update dependency oxlint-tsgolint to v0.11.1 (#7914) by @renovate[bot]
- deps: update dependency diff to v8.0.3 [security] (#7904) by @renovate[bot]
- remove outdated TODO comment in `collect_depended_symbols` (#7888) by @shulaoda
- deps: update oxc resolver to v11.16.3 (#7876) by @renovate[bot]


## [1.0.0-beta.60] - 2026-01-14

### 💥 BREAKING CHANGES

- tsconfig: enable auto-discovery by default (#7817) by @shulaoda

### 🚀 Features

- distinguish transformer diagnostics from parse errors (#7872) by @shulaoda
- emit transformer warnings instead of ignoring them (#7850) by @shulaoda
- node: add `output.codeSplitting` option and deprecate `output.advancedChunks` (#7855) by @hyf0
- nativeMagicString reset (#7828) by @IWANABETHATGUY
- nativeMagicString lastChar (#7819) by @IWANABETHATGUY
- dev/lazy: inject lazy compilation runtime automatically (#7816) by @hyf0
- nativeMagicString snip (#7818) by @IWANABETHATGUY
- nativeMagicString construct with options (#7814) by @IWANABETHATGUY
- nativeMagicString clone (#7813) by @IWANABETHATGUY
- nativeMagicString `insert` (#7812) by @IWANABETHATGUY
- nativeMagicString `slice` (#7807) by @IWANABETHATGUY
- nativeMagicString trim methods (#7800) by @IWANABETHATGUY
- make closeBundle hook receive the last error (#7278) by @Copilot

### 🐛 Bug Fixes

- when package only contains export default, cjsDefault didn't resolve correctly (#7873) by @IWANABETHATGUY
- inline __name calls for default exports  (#7862) by @IWANABETHATGUY
- improve variable renaming to avoid unnecessary shadowing in nested scopes (#7859) by @IWANABETHATGUY
- use correct index when inserting keepNames statements during export default transformation (#7853) by @IWANABETHATGUY
- transform non-static dynamic imports when `dynamicImportInCjs` is `false` (#7823) by @shulaoda
- dev/lazy: should include imported and non-executed modules in the patch (#7815) by @hyf0
- set ExportsKind to Esm when json is none object literal  (#7808) by @IWANABETHATGUY
- nativeMagicString move api (#7796) by @IWANABETHATGUY
- remove unnecessary exports after merging into commong and user defined entry (#7789) by @IWANABETHATGUY
- use output.name instead of chunk.name in mixed export warning (#7788) by @Copilot

### 🚜 Refactor

- generalize ParseError to OxcError with dynamic EventKind (#7868) by @shulaoda
- rust: rename `advanced_chunks` to `manual_code_splitting` (#7856) by @hyf0
- string_wizard error hanlding (#7830) by @IWANABETHATGUY
- remove `experimental.disableLiveBindings` option (#7820) by @sapphi-red
- node/test: run fixture tests in concurrent (#7790) by @hyf0
- move ConfigExport and RolldownOptionsFunction types to define-config (#7799) by @shulaoda
- cli: validate config after resolving and improve error message (#7798) by @shulaoda

### 📚 Documentation

- rebrand (#7670) by @yyx990803
- fix incorrect default value for propertyReadSideEffects (#7847) by @Copilot
- remove options pages and redirect to reference pages (#7834) by @sapphi-red
- options: inline types to option property pages (#7831) by @sapphi-red
- options: port checks.pluginTimings content from options page to reference page (#7832) by @sapphi-red
- options: use `@linkcode` where possible (#7824) by @sapphi-red
- options: port content from options page to reference page (#7822) by @sapphi-red
- options: add descriptions for output options (#7821) by @sapphi-red
- options: add description for input options (#7802) by @sapphi-red
- options: add description for `checks.*` (#7801) by @sapphi-red
- apis: add hook graph (#7671) by @sapphi-red

### 🧪 Testing

- add all valid combination of chunk exports related test (#7851) by @IWANABETHATGUY
- enable MagicString test after api return type alignment (#7797) by @IWANABETHATGUY
- init magic-string test (#7794) by @IWANABETHATGUY

### ⚙️ Miscellaneous Tasks

- vite-tests: configure git user for rebase operation (#7875) by @shulaoda
- rolldown_binding: remove v3 native plugins (#7837) by @shulaoda
- rolldown_binding: allow crate-type as lib (#7866) by @Brooooooklyn
- README.md: adjust position and size of rolldown logo (#7861) by @hyf0
- deps: update test262 submodule for tests (#7857) by @sapphi-red
- deps: update oxc to v0.108.0 (#7845) by @renovate[bot]
- deps: update dependency oxlint to v1.39.0 (#7849) by @renovate[bot]
- deps: update dependency oxfmt to ^0.24.0 (#7844) by @renovate[bot]
- deps: update npm packages (#7841) by @renovate[bot]
- deps: update rust crates (#7839) by @renovate[bot]
- deps: update github-actions (#7840) by @renovate[bot]
- use workspace edition for all crates (#7829) by @IWANABETHATGUY
- deps: update dependency oxlint-tsgolint to v0.11.0 (#7827) by @renovate[bot]
- deps: update napi to v3.8.2 (#7810) by @renovate[bot]
- remove outdated snapshot files (#7806) by @shulaoda
- deps: update crate-ci/typos action to v1.42.0 (#7792) by @renovate[bot]


## [1.0.0-beta.59] - 2026-01-07

### 🚀 Features

- plugin_timings: add 3s threshold and doc link to warning message (#7741) by @shulaoda
- improve treeshaking logic to handle empty parameter list in dynamic import .then() callbacks (#7781) by @Copilot
- dev/lazy: don't include already executed modules (#7745) by @hyf0
- dev/lazy: support dynamic `import(..)` (#7726) by @hyf0
- inline dynamic imports that imports statically imported modules (#7742) by @IWANABETHATGUY
- option: add experimental option to control chunk optimization (#7738) by @IWANABETHATGUY

### 🐛 Bug Fixes

- inline dynamic entry to user defined entry with esm wrap kind (#7783) by @IWANABETHATGUY
- use canonical namespace reference for property access (#7777) by @IWANABETHATGUY
- dynamic entry merged into common chunk with cjs and esm wrap kind (#7771) by @IWANABETHATGUY
- tla: should not await non-tla-related modules (#7768) by @hyf0
- dynamic entry captured by common chunk with CJS format (#7757) by @IWANABETHATGUY
- module_loader: mark emitted chunks as user-defined entry when already loaded (#7765) by @shulaoda
- normalize preserveModulesRoot path (#7737) by @IWANABETHATGUY
- linker: resolve race condition in side effects computation for export-star (#7728) by @camc314

### 🚜 Refactor

- plugin_timings: filter out plugins with duration < 1s from timing warnings (#7785) by @shulaoda
- module_loader: remove unnecessary collect before extend (#7769) by @shulaoda
- rename _id suffixes to _idx for oxc_index types (#7767) by @IWANABETHATGUY
- remove duplicate `preserve_entry_signatures` from `AddEntryModuleMsg` (#7762) by @shulaoda
- module_loader: pass `user_defined_entries` by reference (#7756) by @shulaoda
- dev/lazy: get proxy entry's `ResolvedId` correctly (#7746) by @hyf0
- simplify try_rewrite_import_expression control flow (#7753) by @IWANABETHATGUY
- module_loader: remove unnecessary dynamic import handling for runtime module (#7754) by @shulaoda
- inline __toDynamicImportESM  (#7747) by @IWANABETHATGUY
- use From impl for ModuleLoaderOutput conversion (#7732) by @shulaoda
- remove duplicate fields from `ModuleLoader` (#7731) by @shulaoda
- tweak `resolve_user_defined_entries` (#7727) by @shulaoda

### 📚 Documentation

- add rolldown-string reference to native MagicString compatibility section (#7778) by @Copilot
- improve comments for export star side effects handling (#7730) by @IWANABETHATGUY

### 🧪 Testing

- use assertion instead of console.log for some testcase (#7744) by @IWANABETHATGUY

### ⚙️ Miscellaneous Tasks

- tweak some `output.dynamicImportInCjs` related rollup test results (#7776) by @sapphi-red
- mark esbuild/dce/dce_of_symbol_ctor_call as passed (#7775) by @sapphi-red
- deps: update oxc apps (#7772) by @renovate[bot]
- vite-tests: allow running on PRs with `test: vite-tests` label (#7770) by @shulaoda
- deps: update oxc apps (#7760) by @renovate[bot]
- deps: update rollup submodule for tests to v4.55.1 (#7763) by @sapphi-red
- deps: update test262 submodule for tests (#7764) by @sapphi-red
- deps: update oxc to v0.107.0 (#7758) by @camc314
- deps: update taiki-e/install-action action to v2.65.13 (#7751) by @renovate[bot]
- deps: update rust crates (#7750) by @renovate[bot]
- deps: update npm packages (#7749) by @renovate[bot]
- deps: update github-actions (#7748) by @renovate[bot]
- deps: update dependency oxlint-tsgolint to v0.10.1 (#7729) by @renovate[bot]
- deps: update crate-ci/typos action to v1.41.0 (#7725) by @renovate[bot]