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feat(binding): call moduleParsed hook in ParallelJsPlugin#9318

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hyf0 merged 1 commit into
rolldown:mainfrom
jaehafe:05-08-feat_parallel_js_plugin_module_parsed
May 8, 2026
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feat(binding): call moduleParsed hook in ParallelJsPlugin#9318
hyf0 merged 1 commit into
rolldown:mainfrom
jaehafe:05-08-feat_parallel_js_plugin_module_parsed

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@jaehafe

@jaehafe jaehafe commented May 7, 2026

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Summary

ParallelJsPlugin was missing the moduleParsed hook, so JS plugins that rely on it silently received nothing whenever they ran in parallel mode. This PR wires the hook through to every parallel plugin instance.

Why

crates/rolldown_binding/src/options/plugin/parallel_js_plugin.rs implements the Plugin trait but only forwards 8 of the 20 hooks that JsPlugin supports. register_hook_usage returns HookUsage::all(), so the plugin driver thinks every hook is wired even though the missing ones currently fall through to the default no-op Plugin impl. moduleParsed is the first of those gaps to close.

Same pattern can be applied to the remaining missing hooks (renderStart, renderError, closeBundle, watchChange, closeWatcher, addon hooks, etc.) — happy to follow up in subsequent PRs.

Implementation note — feedback wanted

I went with run_all (every worker's plugin instance is notified per parsed module), matching the convention used by other notification hooks like buildStart / buildEnd. The alternative is run_single, which is what the throughput hooks (resolveId, load, transform, renderChunk) use.

  • run_all is safer for plugins that maintain per-instance state (e.g. tracking all parsed modules), since every instance sees the same stream.
  • run_all holds every worker permit per call, which can serialize workers if there are many modules. run_single would avoid that but breaks state consistency across instances.

Happy to switch to run_single if maintainers prefer the throughput trade-off.

Test plan

  • cargo check -p rolldown_binding passes
  • Add an integration test that asserts a parallel JS plugin's moduleParsed is called for each module — pointer to an existing parallel-plugin test fixture appreciated if there is one.

AI Usage Disclosure

Used Claude (Anthropic) to navigate the codebase and identify the gap between Plugin trait coverage in JsPlugin vs ParallelJsPlugin. The 14-line patch was reviewed and adapted by me; I verified the design choice (run_all vs run_single) against the existing patterns in the same file.

@codspeed-hq

codspeed-hq Bot commented May 7, 2026

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Merging this PR will not alter performance

✅ 4 untouched benchmarks
⏩ 10 skipped benchmarks1


Comparing jaehafe:05-08-feat_parallel_js_plugin_module_parsed (45433ef) with main (db46692)2

Open in CodSpeed

Footnotes

  1. 10 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports.

  2. No successful run was found on main (0e7d397) during the generation of this report, so db46692 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report.

@hyf0 hyf0 left a comment

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Thank you! However, the development of ParallelJsPlugin is currently pasued. We're focusing on other important things.

@hyf0 hyf0 merged commit d69e071 into rolldown:main May 8, 2026
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@rolldown-guard rolldown-guard Bot mentioned this pull request May 13, 2026
shulaoda added a commit that referenced this pull request May 13, 2026
## [1.0.1] - 2026-05-13

### 🚀 Features

- experimental/lazy-barrel: advice on oversized barrel modules (#9236) by @shulaoda
- rolldown: inline optional-chain enum access (#9379) by @Dunqing
- chunk-optimization: dedupe already-loaded dynamic deps (#9305) by @IWANABETHATGUY
- binding: call moduleParsed hook in ParallelJsPlugin (#9318) by @jaehafe

### 🐛 Bug Fixes

- transform: enable `enum_eval` for `transformSync` and vite TS transform (#9325) by @Dunqing
- error: remove severity prefix from diagnostic messages (#9262) by @Kyujenius
- deps: pin pnpm to 10.23.0 to work around catalog mismatch on Netlify (#9364) by @shulaoda
- ci: pin mimalloc-safe to 0.1.58 (#9361) by @shulaoda
- dev/lazy: fix exports of lazy requests in lazy chunks (#9249) by @h-a-n-a
- rolldown_plugin_vite_resolve: handle errors in `resolveSubpathImports` callback (#9355) by @sapphi-red
- rolldown_plugin_lazy_compilation: use loadExports for fetched proxy to preserve original export names (#9132) by @h-a-n-a
- common: include offending index in HybridIndexVec panic message (#9296) by @SAY-5

### 🚜 Refactor

- ecmascript: extract semantic_builder_for_transform helper (#9326) by @Dunqing
- test: extract reusable static-import-cycle helper (#9332) by @IWANABETHATGUY

### 📚 Documentation

- clarify scope of `topLevelVar` (#9380) by @IWANABETHATGUY
- meta/design: add ast-mutation design doc (#9338) by @hyf0
- feat: add ai policy in contribution guide (#9315) by @mdong1909

### ⚡ Performance

- binding: enable mimalloc v3 to reduce idle memory (#9349) by @shulaoda

### 🧪 Testing

- mcs: cover require() in `$initial` group (#9376) by @hyf0
- add regression for CJS facade chunk merge into entry (#9351) by @IWANABETHATGUY

### ⚙️ Miscellaneous Tasks

- switch prepare-release to manual dispatch with version input (#9383) by @shulaoda
- migrate `@rolldown/pluginutils` to `rolldown/plugins` (#9317) by @shulaoda
- deps: pin libmimalloc-sys2 to 0.1.54 (#9372) by @shulaoda
- replace `igorskyflyer/action-readfile` with `cat` (#9369) by @sapphi-red
- deps: update test262 submodule for tests (#9371) by @rolldown-guard[bot]
- use app token for test dep update PRs (#9368) by @sapphi-red
- replace some actions with gh commands (#9367) by @sapphi-red
- replace action-semantic-pull-request with inline regex (#9366) by @sapphi-red
- remove pull_request_target workflows (#9188) by @Boshen
- deps: upgrade oxc to 0.130.0 (#9360) by @shulaoda
- deps: update github actions (major) (#9348) by @renovate[bot]
- deps: update github actions (#9341) by @renovate[bot]
- deps: update rust crates (#9344) by @renovate[bot]
- deps: update crate-ci/typos action to v1.46.1 (#9357) by @renovate[bot]
- deps: update npm packages (#9343) by @renovate[bot]
- deps: update pnpm to v10.33.4 (#9347) by @renovate[bot]
- deps: update dependency rolldown-plugin-dts to ^0.25.0 (#9346) by @renovate[bot]
- .claude: add rolldown-repl encoder, rename decode skill (#9352) by @IWANABETHATGUY
- deps: update crate-ci/typos action to v1.46.0 (#9345) by @renovate[bot]
- deps: update napi to v3.8.6 (#9342) by @renovate[bot]
- deps: update dependency vite-plus to v0.1.20 (#9340) by @renovate[bot]
- enable rollup chunking-form test (#9335) by @IWANABETHATGUY
- typo: fix typo in watcher options comment (#9324) by @thescripted

### ❤️ New Contributors

* @Kyujenius made their first contribution in [#9262](#9262)
* @SAY-5 made their first contribution in [#9296](#9296)
* @thescripted made their first contribution in [#9324](#9324)

Co-authored-by: shulaoda <[email protected]>
IWANABETHATGUY pushed a commit that referenced this pull request May 18, 2026
## [1.0.1] - 2026-05-13

### 🚀 Features

- experimental/lazy-barrel: advice on oversized barrel modules (#9236) by @shulaoda
- rolldown: inline optional-chain enum access (#9379) by @Dunqing
- chunk-optimization: dedupe already-loaded dynamic deps (#9305) by @IWANABETHATGUY
- binding: call moduleParsed hook in ParallelJsPlugin (#9318) by @jaehafe

### 🐛 Bug Fixes

- transform: enable `enum_eval` for `transformSync` and vite TS transform (#9325) by @Dunqing
- error: remove severity prefix from diagnostic messages (#9262) by @Kyujenius
- deps: pin pnpm to 10.23.0 to work around catalog mismatch on Netlify (#9364) by @shulaoda
- ci: pin mimalloc-safe to 0.1.58 (#9361) by @shulaoda
- dev/lazy: fix exports of lazy requests in lazy chunks (#9249) by @h-a-n-a
- rolldown_plugin_vite_resolve: handle errors in `resolveSubpathImports` callback (#9355) by @sapphi-red
- rolldown_plugin_lazy_compilation: use loadExports for fetched proxy to preserve original export names (#9132) by @h-a-n-a
- common: include offending index in HybridIndexVec panic message (#9296) by @SAY-5

### 🚜 Refactor

- ecmascript: extract semantic_builder_for_transform helper (#9326) by @Dunqing
- test: extract reusable static-import-cycle helper (#9332) by @IWANABETHATGUY

### 📚 Documentation

- clarify scope of `topLevelVar` (#9380) by @IWANABETHATGUY
- meta/design: add ast-mutation design doc (#9338) by @hyf0
- feat: add ai policy in contribution guide (#9315) by @mdong1909

### ⚡ Performance

- binding: enable mimalloc v3 to reduce idle memory (#9349) by @shulaoda

### 🧪 Testing

- mcs: cover require() in `$initial` group (#9376) by @hyf0
- add regression for CJS facade chunk merge into entry (#9351) by @IWANABETHATGUY

### ⚙️ Miscellaneous Tasks

- switch prepare-release to manual dispatch with version input (#9383) by @shulaoda
- migrate `@rolldown/pluginutils` to `rolldown/plugins` (#9317) by @shulaoda
- deps: pin libmimalloc-sys2 to 0.1.54 (#9372) by @shulaoda
- replace `igorskyflyer/action-readfile` with `cat` (#9369) by @sapphi-red
- deps: update test262 submodule for tests (#9371) by @rolldown-guard[bot]
- use app token for test dep update PRs (#9368) by @sapphi-red
- replace some actions with gh commands (#9367) by @sapphi-red
- replace action-semantic-pull-request with inline regex (#9366) by @sapphi-red
- remove pull_request_target workflows (#9188) by @Boshen
- deps: upgrade oxc to 0.130.0 (#9360) by @shulaoda
- deps: update github actions (major) (#9348) by @renovate[bot]
- deps: update github actions (#9341) by @renovate[bot]
- deps: update rust crates (#9344) by @renovate[bot]
- deps: update crate-ci/typos action to v1.46.1 (#9357) by @renovate[bot]
- deps: update npm packages (#9343) by @renovate[bot]
- deps: update pnpm to v10.33.4 (#9347) by @renovate[bot]
- deps: update dependency rolldown-plugin-dts to ^0.25.0 (#9346) by @renovate[bot]
- .claude: add rolldown-repl encoder, rename decode skill (#9352) by @IWANABETHATGUY
- deps: update crate-ci/typos action to v1.46.0 (#9345) by @renovate[bot]
- deps: update napi to v3.8.6 (#9342) by @renovate[bot]
- deps: update dependency vite-plus to v0.1.20 (#9340) by @renovate[bot]
- enable rollup chunking-form test (#9335) by @IWANABETHATGUY
- typo: fix typo in watcher options comment (#9324) by @thescripted

### ❤️ New Contributors

* @Kyujenius made their first contribution in [#9262](#9262)
* @SAY-5 made their first contribution in [#9296](#9296)
* @thescripted made their first contribution in [#9324](#9324)

Co-authored-by: shulaoda <[email protected]>
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2 participants