rolldown 1.0.0-rc.1

v1.0.0-rc.1

on Node.js NPM

[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]