fix: correct filter out unused cjs namespace #7602
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Pull request overview
This PR fixes issue #7597 by correctly filtering out unused CommonJS namespace references during code splitting. The fix ensures that CJS namespace bindings are only included in the output when they are actually used, not just when their containing module is included.
Key Changes:
- Updated the filtering logic in
merge_cjs_namespaceto useused_symbol_refsinstead ofis_included - Added comprehensive test case demonstrating the fix with both used and unused CJS imports
Reviewed changes
Copilot reviewed 10 out of 10 changed files in this pull request and generated 1 comment.
Show a summary per file
| File | Description |
|---|---|
crates/rolldown/src/stages/generate_stage/code_splitting.rs |
Changed filter from checking module inclusion to checking actual symbol usage, removing unused CJS namespace references from output |
crates/rolldown/tests/rolldown/issues/7597/*.js |
Test case files demonstrating the scenario: b.js imports but doesn't use c.js (CJS), while a.js imports and uses it |
crates/rolldown/tests/rolldown/issues/7597/artifacts.snap |
Expected output showing c.js is only imported in a.js where it's actually used |
crates/rolldown/tests/rolldown/issues/7597/_config.json |
Empty test configuration |
crates/rolldown/tests/rolldown/issues/7597/package.json |
Package config with sideEffects: false to enable proper tree-shaking |
crates/rolldown/tests/snapshots/integration_rolldown__filename_with_hash.snap |
Updated snapshot including the new test case |
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shulaoda
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Dec 20, 2025
IWANABETHATGUY
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closed #7597 --------- Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
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## [1.0.0-beta.56] - 2025-12-22 ### 💥 BREAKING CHANGES - rename `MIXED_EXPORT` error to `MIXED_EXPORTS` (#7565) by @sapphi-red ### 🚀 Features - rename `id` property to `exporter` in CIRCULAR_REEXPORT error (#7592) by @sapphi-red - add `ids` property to `CIRCULAR_DEPENDENCY` error (#7591) by @sapphi-red - node/dev: expose `devMode.lazy` (#7549) by @hyf0 - set log and pos properties for `parseAst` function errors (#7568) by @sapphi-red - set log and pos properties for logs (#7567) by @sapphi-red - test-dev-sever: support to manually configure port, run tests in concurrent (#7576) by @hyf0 - add `exporter` property to `MISSING_EXPORT` error (#7564) by @sapphi-red - add `id` property to `PARSE_ERROR` error (#7563) by @sapphi-red - support ImporterId hook filter (#7540) by @IWANABETHATGUY ### 🐛 Bug Fixes - types: better "go to definition" experience for interface `OutputPlugin` (#7610) by @KazariEX - `postBanner` content should be placed after shebang (#7583) by @btea - use sanitized filename for preserve modules chunk name (#7603) by @IWANABETHATGUY - correct filter out unused cjs namespace (#7602) by @IWANABETHATGUY - watch: property respect `notify.pollInternal` and `notify.compareContents` (#7595) by @sapphi-red - make `cleanDir` work with default output directory (#7579) by @shulaoda - merge `MISSING_NAME_OPTION_FOR_UMD_EXPORT` error to `MISSING_NAME_OPTION_FOR_IIFE_EXPORT` error (#7566) by @sapphi-red - dev/hmr: ensure cjs modules with no exports reference correct `module` identifier (#7544) by @leegeunhyeok ### 🚜 Refactor - remove `stable_id` field from `PARSE_ERROR` error (#7593) by @sapphi-red - make include_runtime_symbol reuseable after linking stage (#7580) by @IWANABETHATGUY - rust/dev: construct the bundler within itself (#7553) by @hyf0 - rust/watcher: polish API of `Watcher` struct (#7551) by @hyf0 - use `LinkingMetadata::stmt_info_included` to check if a stmt_info is included (#7572) by @IWANABETHATGUY - use `LinkingMetadata::is_included` to check if a module is included (#7571) by @IWANABETHATGUY - store module and stmt_info is included info to module meta (#7570) by @IWANABETHATGUY - make include_* method reunsable after linking stage (#7552) by @IWANABETHATGUY - rust/watcher: construct the bundler within watcher itself (#7550) by @hyf0 - extract make include_runtime_symbol reusable (#7546) by @IWANABETHATGUY ### ⚙️ Miscellaneous Tasks - renovate: add `kill-port` in `ignoreDeps` in renovate.json (#7619) by @sapphi-red - deps: update rust crates (#7617) by @renovate[bot] - deps: update npm packages (#7616) by @renovate[bot] - deps: update github-actions (#7615) by @renovate[bot] - ci: skip benchmark workflows on draft PRs (#7611) by @Copilot - deps: update dependency rolldown-plugin-dts to ^0.19.0 (#7607) by @renovate[bot] - deps: update dependency oxlint-tsgolint to v0.10.0 (#7601) by @renovate[bot] - deps: update dependency rolldown-plugin-dts to v0.18.4 (#7599) by @renovate[bot] - deps: update notify (#7594) by @sapphi-red - test-dev-server: add retry mechanism to hmr-full-bundle-mode tests (#7588) by @Copilot - deps: update napi to v3.7.1 (#7590) by @renovate[bot] - add JSDoc documentation for memfs type (#7587) by @Copilot - deps: update dependency oxlint to v1.34.0 (#7589) by @renovate[bot] - move some tests in ignored-by-unsupported-features that are passing (#7569) by @sapphi-red - deps: update dependency oxlint-tsgolint to v0.9.2 (#7582) by @renovate[bot] - deps: update oxc resolver to v11.16.0 (#7574) by @renovate[bot] - test/dev-server: don't run `pnpm install` during tests (#7560) by @hyf0 - test/dev-server: use `kill-port@1` to improve performance (#7575) by @hyf0 - normalize error object to make some Rollup tests pass (#7562) by @sapphi-red - ci: separate dev-server(hmr) tests and normal tests (#7558) by @hyf0 - ci: make native rolldown build reusable (#7557) by @hyf0 - resolve some TODOs (#7561) by @sapphi-red ### ❤️ New Contributors * @KazariEX made their first contribution in [#7610](#7610) * @leegeunhyeok made their first contribution in [#7544](#7544) Co-authored-by: shulaoda <[email protected]>
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closed #7597