Rolldown Release Notes

🚀 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
• use set to store user defined entry modules (#8315) 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

🚀 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

🚀 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 rolldown/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 v1.42.3 (#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

• @coolreader18 made their first contribution in #8110

🚀 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 @sapphi-red
• 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]

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 v1.42.1 (#8188) by @renovate[bot]
• deps: update rust crate ts-rs to v12 (#8160) by @renovate[bot]

New Contributors

• @valadaptive made their first contribution in #8043

🚀 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 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
• 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 @IWANABETHGUY
• 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 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]

❤️ New Contributors

• @valadaptive made their first contribution in #8043

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]

🚀 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]

BREAKING CHANGES

• experimental/devtools: rename InputOptions#debug to InputOptions#devtools (#7686) by @Copilot

Features

• implement target feature check in should_transform_js for raw options (#7697) by @shulaoda
• support output.dynamicImportInCjs option (#7677) by @shulaoda
• types: expose ChecksOptions type (#7653) by @sapphi-red

Bug Fixes

• export runtime helpers for cross-chunk access (#7658) by @shulaoda
• cjs namespace merging regression (#7665) by @IWANABETHATGUY
• replace panic with proper error handling for hash placeholder generation (#7661) by @shulaoda
• remove the blank line between shebang and postBanner (#7643) by @btea
• rolldown_plugin_vite_reporter: apply padding before ANSI coloring for proper size column alignment (#7649) by @shulaoda

Refactor

• rust: use StableModuleId as the map key if possible (#7718) by @hyf0
• rust: return StableModuleId instead of &str from Module#stable_id() (#7717) by @hyf0
• rust: return correct stable id of external module from Module#stable_id() (#7716) by @hyf0
• rust: introduce StableModuleId type (#7715) by @hyf0
• rust: reduce unnecessary id.as_arc_str().clone().into() (#7714) by @hyf0
• rust: remove ModuleId#resource_id and use as_arc_str directly (#7710) by @hyf0
• rust: remove unused Module#id_clone (#7709) by @hyf0
• rust: remove Module#id_as_str and use Module#id directly (#7708) by @hyf0
• consolidate namespace call analysis into import analyzer (#7657) by @IWANABETHATGUY
• rust: make ExternalModule#id have the type ModuleId (#7707) by @hyf0
• rust: rename Module#id to Module#id_as_str (#7706) by @hyf0
• rust: use ModuleId instead of raw ArcStr for ScanStageCache (#7701) by @hyf0
• simplify error propagation in cache merge (#7702) by @shulaoda
• use ModuleId as the type of ResolvedId#id (#7694) by @hyf0
• types: rename resolved_request_info.rs to resolved_id.rs and move its contents (#7687) by @hyf0
• devtools: emit data to /node_modules/.rolldown (#7692) by @hyf0
• use InvalidOption for hash placeholder generation errors (#7674) by @shulaoda
• rolldown_error: remove dependency on rolldown_utils (#7672) by @shulaoda
• use nodejs-built-in-modules v1.0.0 directly in callsites (#7667) by @Boshen

Documentation

• migrate input options content from options to auto gen docs (#7663) by @mdong1909
• create reference index page (#7659) by @mdong1909
• tweak auto-generated reference output (#7654) by @sapphi-red
• initialize auto-gen docs (#7252) by @mdong1909

Miscellaneous Tasks

• deps: update napi (#7705) by @renovate[bot]
• pin Node.js version to 24.12.0 LTS in .node-version file (#7713) by @Copilot
• update esbuild test reasons (#7703) by @sapphi-red
• deps: update crate-ci/typos action to v1.40.1 (#7696) by @renovate[bot]
• deps: update oxc to v0.106.0 (#7512) by @renovate[bot]
• js: replace dprint with oxfmt (#7214) by @Boshen
• deps: update dependency oxlint to v1.36.0 (#7691) by @renovate[bot]
• deps: update github-actions (#7679) by @renovate[bot]
• deps: update npm packages (#7680) by @renovate[bot]
• deps: update rust crates (#7678) by @renovate[bot]
• deps: update oxc resolver to v11.16.2 (#7668) by @renovate[bot]
• add API reference files to knip entry points (#7669) by @Copilot
• deps: update notify (#7651) by @sapphi-red
• add homepage field to package.json (#7648) by @trivikr
• deps: update oxc resolver to v11.16.1 (#7647) by @renovate[bot]
• deps: update rolldown-plugin-dts to 0.20.0 (#7645) by @shulaoda

💥 BREAKING CHANGES

• tsconfig: enable project references support in manual mode (#7545) by @shulaoda

🚀 Features

• add CANNOT_CALL_NAMESPACE warning (#7636) by @sapphi-red
• add import path for unresolved import diagnostics (#7625) by @sapphi-red
• optimize dynamic entry facade chunks by merging with common chunks when they are captured by common chunks (#7486) by @IWANABETHATGUY

🐛 Bug Fixes

• rename __export to __exportAll to be compatible with cjs-module-lexer (#7640) by @IWANABETHATGUY
• strip UTF-8 BOM when using text loader (#7635) by @sapphi-red
• rolldown_plugin_replace: avoid crashing with invalid delimiters (#7621) by @sapphi-red

🚜 Refactor

• export all filter functions (#7622) by @sxzz
• allow multiple help messages in diagnostics (#7624) by @sapphi-red

📚 Documentation

• add README.md to packages/rolldown (#7556) by @Copilot

⚡ Performance

• use fsevents on macOS for file watching (#7596) by @sapphi-red

🧪 Testing

• handle re-exports of external modules in CJS format (#7641) by @IWANABETHATGUY
• update integration to use vite's rolldown-canary branch (#7633) by @shulaoda

⚙️ Miscellaneous Tasks

• docs: fix Netlify ignore condition to detect docs changes across all PR commits (#7637) by @Copilot
• deps: update rollup submodule for tests to v4.54.0 (#7630) by @sapphi-red
• skip benchmarks for PRs with 'graphite: merge-when-ready' label (#7631) by @Boshen
• deps: update esbuild for tests to 0.27.2 (#7629) by @sapphi-red
• fix "update-test-dependencies" workflow (#7628) by @sapphi-red
• deps: update test262 submodule for tests (#7626) by @sapphi-red
• deps: update dependency oxlint to v1.35.0 (#7623) by @renovate[bot]