[1.0.0-beta.34] - 2025-08-25

💥 BREAKING CHANGES

• improve merging of top-level transform option with tsconfig (refactor!: improve merging of top-level transform option with tsconfig #5882) by @shulaoda
• support top-level tsconfig (feat!: support top-level tsconfig #5842) by @shulaoda

🚀 Features

• rolldown_plugin_esm_external_require: export namespace directly for Node builtin modules (feat(rolldown_plugin_esm_external_require): export namespace directly for Node builtin modules #5885) by @shulaoda
• rolldown_plugin_dynamic_import_vars: warn by default when errors occur (feat(rolldown_plugin_dynamic_import_vars): warn by default when errors occur #5866) by @shulaoda
• support adding note for diagnostic (feat: support adding note for diagnostic #5864) by @IWANABETHATGUY
• rolldown_plugin_vite_css_post: align partial css chunk logic (feat(rolldown_plugin_vite_css_post): align partial css chunk logic #5861) by @shulaoda
• setup rolldown_binding_watcher (feat: setup rolldown_binding_watcher #5859) by @hyf0
• rolldown_plugin_vite_css_post: align css url replace logic (feat(rolldown_plugin_vite_css_post): align css url replace logic #5857) by @shulaoda
• node/dev: binding for DevEngine (feat(node/dev): binding for DevEngine #5852) by @hyf0
• dev: introduce DevEngine to support build for devlopement scenario (feat(dev): introduce DevEngine to support build for devlopement scenario #5808) by @hyf0
• Show a information log to tell built-in features if a plugin covered by built-in features are used (feat: Show a information log to tell built-in features if a plugin covered by built-in features are used #5845) by @IWANABETHATGUY
• rolldown_plugin_vite_css_post: align partial css url replace logic (feat(rolldown_plugin_vite_css_post): align partial css url replace logic #5837) by @shulaoda
• rolldown_plugin_vite_css_post: align CSS chunk concatenation logic (feat(rolldown_plugin_vite_css_post): align CSS chunk concatenation logic #5836) by @shulaoda
• rolldown_plugin_transform: support useDefineForClassFields=false with target>=es2022 (feat(rolldown_plugin_transform): support useDefineForClassFields=false with target>=es2022 #5841) by @sapphi-red
• expose esmExternalRequirePlugin (feat: expose esmExternalRequirePlugin #5810) by @shulaoda
• rolldown_plugin_esm_external_require: basic implementation (feat(rolldown_plugin_esm_external_require): basic implementation #5809) by @shulaoda
• rolldown: oxc v0.82.3 (feat(rolldown): oxc v0.82.3 #5807) by @Boshen
• expose oxc_minifier options (feat: expose oxc_minifier options #5804) by @IWANABETHATGUY
• rolldown_plugin_require_to_import: initialize (feat(rolldown_plugin_require_to_import): initialize #5797) by @shulaoda
• adjust codegen initial_indent for concatenateWrappedModule (feat: adjust codegen initial_indent for concatenateWrappedModule #5779) by @IWANABETHATGUY
• rolldown: align default value of option.context (feat(rolldown): align default value of option.context #5745) by @situ2001

🐛 Bug Fixes

• topLevelVar option removes class name, causing a TypeError in static block (fix: topLevelVar option removes class name, causing a TypeError in static block #5888) by @IWANABETHATGUY
• a esm module required by other module can't be a inner module of concatenateModuleGroup (fix: a esm module required by other module can't be a inner module of concatenateModuleGroup #5875) by @IWANABETHATGUY
• rolldown_plugin_transform: align lang logic correctly (fix(rolldown_plugin_transform): align lang logic correctly #5874) by @shulaoda
• Runtime error occurs depending on the lazy import order. (fix: Runtime error occurs depending on the lazy import order. #5873) by @IWANABETHATGUY
• when importee is ts or tsx adding potential false positive note for missing_export diagnostic (fix: when importee is ts or tsx adding potential false positive note for missing_export diagnostic #5862) by @IWANABETHATGUY
• hmr: boundary and accept_via was reversed (fix(hmr): boundary and accept_via was reversed #5843) by @sapphi-red
• returning result of this.resolve in resolveId hook impacts bundle size (fix: returning result of this.resolve in resolveId hook impacts bundle size #5851) by @IWANABETHATGUY
• rolldown_plugin_transform: set typescript.removeClassFieldsWithoutInitializer for useDefineForClassFields=false (fix(rolldown_plugin_transform): set typescript.removeClassFieldsWithoutInitializer for useDefineForClassFields=false #5840) by @sapphi-red
• hmr: import.meta.hot.accept in patch file should work (fix(hmr): import.meta.hot.accept in patch file should work #5823) by @sapphi-red
• proper handle pife and profiler_names for concatenate_wrapped_modules (fix: proper handle pife and profiler_names for concatenate_wrapped_modules #5835) by @IWANABETHATGUY
• jsx preserve break component which is default export (fix: jsx preserve break component which is default export #5751) by @shulaoda
• hmr: ensure patch file name to be unique (fix(hmr): ensure patch file name to be unique #5825) by @sapphi-red
• hmr: re-execute the boundary module rather than the accepted module (fix(hmr): re-execute the boundary module rather than the accepted module #5822) by @sapphi-red
• Rolldown cannot treeshake unused branch (fix: Rolldown cannot treeshake unused branch #5829) by @IWANABETHATGUY
• inlineConst with constant propagation (feat: inlineConst with constant propagation #5826) by @IWANABETHATGUY
• don't mangle variable names when minify: 'dce-only' is used (fix: don't mangle variable names when minify: 'dce-only' is used #5830) by @sapphi-red
• return actual normalized minify options (fix: return actual normalized minify options #5818) by @IWANABETHATGUY
• plugin/vite-resolve: try non-prefixed index before prefixed index (fix(plugin/vite-resolve): try non-prefixed index before prefixed index #5801) by @sapphi-red
• throw a semantic error message instead of panic (fix: throw a semantic error message instead of panic #5796) by @AliceLanniste
• rolldown: run DCE on chunk when minify: dce-only (fix(rolldown): run DCE on chunk when minify: dce-only #5792) by @Boshen
• the import attribute has been removed. (fix: the import attribute has been removed. #5794) by @IWANABETHATGUY
• don't match CRLF for /./ (fix: don't match CRLF for /./ #5790) by @IWANABETHATGUY
• node: allow output.topLevelVar by options validator (fix(node): allow output.topLevelVar by options validator #5789) by @sapphi-red
• node: allow transform.jsx: 'preserve' by options validator (fix(node): allow transform.jsx: 'preserve' by options validator #5781) by @sapphi-red
• preserve default export for preserveModules (fix: preserve default export for preserveModules #5780) by @shulaoda
• browser: sync exports (fix(browser): sync exports #5776) by @sxzz
• rolldown_plugin_transform: skip builtin transform for module id with null byte (fix(rolldown_plugin_transform): skip builtin transform for module id with null byte #5775) by @hi-ogawa

🚜 Refactor

• move common transform types into rolldown_common (refactor: move common transform types into rolldown_common #5876) by @shulaoda
• rolldown_plugin_vite_css_post: extract finalize_vite_css_urls (refactor(rolldown_plugin_vite_css_post): extract finalize_vite_css_urls #5860) by @shulaoda
• rust: make NotifyWatcher WASM-compatible (refactor(rust): make NotifyWatcher WASM-compatible #5855) by @hyf0
• rust/dev: remove improper deref for BuildDriver (refactor(rust/dev): remove improper deref for BuildDriver #5854) by @hyf0
• incremental: use clone_in_with_semantic_ids for program cloning (refactor(incremental): use clone_in_with_semantic_ids for program cloning #5853) by @shulaoda
• rolldown_plugin_esm_external_require: tweak code (refactor(rolldown_plugin_esm_external_require): tweak code #5824) by @shulaoda
• improve resolve_dependencies (refactor: improve resolve_dependencies #5795) by @shulaoda
• simplify method calls in PluginContext (refactor: simplify method calls in PluginContext #5785) by @situ2001

📚 Documentation

• builtin-plugins: clarify behavior of esmExternalRequirePlugin (docs(builtin-plugins): clarify behavior of esmExternalRequirePlugin #5886) by @sapphi-red
• builtin-plugins: add documentation for esmExternalRequirePlugin (docs(builtin-plugins): add documentation for esmExternalRequirePlugin #5813) by @shulaoda
• support extracting doc for reference type (docs: support extracting doc for reference type #5834) by @IWANABETHATGUY
• optimization.inlineConst (docs: optimization.inlineConst #5831) by @IWANABETHATGUY
• update description for output.minify (docs: update description for output.minify #5816) by @IWANABETHATGUY
• plugins: extract plugins into a separate section (docs(plugins): extract plugins into a separate section #5812) by @shulaoda

⚡ Performance

• string_wizard: reduce allocation (perf(string_wizard): reduce allocation #5793) by @Brooooooklyn

🧪 Testing

• hmr: import.meta.hot.accept cases (test(hmr): import.meta.hot.accept cases #5821) by @sapphi-red
• hmr: static import cases (test(hmr): static import cases #5820) by @sapphi-red
• hmr: no boundary full reload case (test(hmr): no boundary full reload case #5819) by @sapphi-red

⚙️ Miscellaneous Tasks

• deps: update oxc-resolver to v11.7.0 (chore(deps): update oxc-resolver to v11.7.0 #5889) by @shulaoda
• deps: lock file maintenance (chore(deps): lock file maintenance #5880) by @renovate[bot]
• deps: lock file maintenance rust crates (chore(deps): lock file maintenance rust crates #5881) by @renovate[bot]
• deps: update github-actions (chore(deps): update github-actions #5877) by @renovate[bot]
• deps: lock file maintenance rust crates (chore(deps): lock file maintenance rust crates #5879) by @renovate[bot]
• deps: lock file maintenance npm packages (chore(deps): lock file maintenance npm packages #5878) by @renovate[bot]
• bump rolldown-ariadne (chore: bump rolldown-ariadne #5863) by @IWANABETHATGUY
• remove usage of quote_expr, quote_stmt (chore: remove usage of quote_expr, quote_stmt #5858) by @IWANABETHATGUY
• vite-tests: run all test suites even if some test suites failed (chore(vite-tests): run all test suites even if some test suites failed #5828) by @sapphi-red
• vite-tests: set _VITE_TEST_JS_PLUGIN instead of _VITE_TEST_NATIVE_PLUGIN (chore(vite-tests): set _VITE_TEST_JS_PLUGIN instead of _VITE_TEST_NATIVE_PLUGIN #5827) by @sapphi-red
• deps: use vitepress@^2.0.0-alpha.12 instead (chore(deps): use vitepress@^2.0.0-alpha.12 instead #5811) by @shulaoda
• deps: update dependency rolldown-plugin-dts to v0.15.7 (chore(deps): update dependency rolldown-plugin-dts to v0.15.7 #5814) by @renovate[bot]
• add example with oxc transform styled components plugin (chore: add example with oxc transform styled components plugin #5800) by @IWANABETHATGUY
• deprecate top-level jsx option in favor of transform.jsx (chore: deprecate top-level jsx option in favor of transform.jsx #5783) by @shulaoda
• deps: update crate-ci/typos action to v1.35.5 (chore(deps): update crate-ci/typos action to v1.35.5 #5786) by @renovate[bot]
• update default value of options.context (chore: update default value of options.context #5777) by @IWANABETHATGUY

◀️ Revert

• "fix: jsx preserve break component which is default export (fix: jsx preserve break component which is default export #5764)" (revert: "fix: jsx preserve break component which is default export (#5764)" #5856) by @shulaoda