## [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](#9031)

Co-authored-by: shulaoda <165626830+shulaoda@users.noreply.github.com>