# rolldown v1.2.4

- Product: rolldown (https://whatsnew.fyi/product/rolldown)
- Vendor: rolldown
- Date: 2026-08-12
- Version: v1.2.4
- Original notes: https://github.com/rolldown/rolldown/releases/tag/v1.2.4
- Permalink: https://whatsnew.fyi/product/rolldown/releases/v1.2.4

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

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- **added** — Widen namespace extraction for already-loaded merges in code-splitting
- **fixed** — Fix illegal instruction crash on Android arm64 in binding
- **fixed** — Stop negated sideEffects globs from retaining modules in code-splitting
- **fixed** — Resolve log paths against the build cwd in devtools

##### [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

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