feat: add builtin plugin for visualizing chunk graph by IWANABETHATGUY · Pull Request #8162 · rolldown/rolldown

IWANABETHATGUY · 2026-02-02T01:59:38Z

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IWANABETHATGUY · 2026-02-02T02:00:17Z

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commit: f2bf28a

github-actions · 2026-02-08T13:49:19Z

Benchmarks Rust

target: main(37107bf)
pr: 01-28-feat_chunk_visualization_plugin(f2bf28a)

group                                                        pr                                     target
-----                                                        --                                     ------
bundle/bundle@multi-duplicated-top-level-symbol              1.00     66.8±1.15ms        ? ?/sec    1.13     75.5±2.17ms        ? ?/sec
bundle/bundle@multi-duplicated-top-level-symbol-sourcemap    1.00     74.9±2.77ms        ? ?/sec    1.06     79.6±3.42ms        ? ?/sec
bundle/bundle@rome_ts                                        1.00    100.4±3.03ms        ? ?/sec    1.01    101.6±1.75ms        ? ?/sec
bundle/bundle@rome_ts-sourcemap                              1.00    110.8±2.32ms        ? ?/sec    1.03    113.8±2.40ms        ? ?/sec
bundle/bundle@threejs                                        1.00     34.7±2.03ms        ? ?/sec    1.00     34.7±0.68ms        ? ?/sec
bundle/bundle@threejs-sourcemap                              1.00     39.9±0.46ms        ? ?/sec    1.01     40.4±0.70ms        ? ?/sec
bundle/bundle@threejs10x                                     1.00    359.2±3.20ms        ? ?/sec    1.05    378.1±4.86ms        ? ?/sec
bundle/bundle@threejs10x-sourcemap                           1.00    414.3±2.52ms        ? ?/sec    1.05    433.3±6.32ms        ? ?/sec
scan/scan@rome_ts                                            1.00     78.7±1.60ms        ? ?/sec    1.01     79.7±1.60ms        ? ?/sec
scan/scan@threejs                                            1.00     27.4±1.61ms        ? ?/sec    1.01     27.6±0.65ms        ? ?/sec
scan/scan@threejs10x                                         1.00    282.2±4.97ms        ? ?/sec    1.00    282.6±4.33ms        ? ?/sec

Copilot

Pull request overview

Adds a new built-in plugin that emits JSON describing the produced chunk graph (chunks, modules, and relationships) to support bundle analysis, along with a demo example and the necessary Rust↔TS binding wiring.

Changes:

Introduce rolldown_plugin_chunk_visualize (Rust) and a JS factory chunkVisualizePlugin() to enable emitting analyze-data.json.
Wire the plugin through the binding layer (enum name, config object, TS typings) and export it from rolldown/experimental and rolldown/plugins.
Add an examples/chunk-visualize-demo project demonstrating code-splitting and plugin usage.

Reviewed changes

Copilot reviewed 27 out of 29 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
pnpm-lock.yaml	Adds the new example as a workspace importer dependency on `rolldown`.
packages/rolldown/src/plugins-index.ts	Exports `chunkVisualizePlugin` from the stable `rolldown/plugins` entrypoint.
packages/rolldown/src/options/input-options.ts	Formatting-only change (blank line).
packages/rolldown/src/experimental-index.ts	Re-exports `chunkVisualizePlugin` from `rolldown/experimental`.
packages/rolldown/src/builtin-plugin/chunk-visualize-plugin.ts	New JS builtin-plugin factory and JSDoc examples for `chunkVisualizePlugin()`.
packages/rolldown/src/binding.d.cts	Updates generated TS types: builtin plugin name union + plugin config interface.
examples/chunk-visualize-demo/src/worker.js	Demo entry showcasing dynamic import and various module relationships.
examples/chunk-visualize-demo/src/utils/logger.js	Demo logger stub used by the example modules.
examples/chunk-visualize-demo/src/utils/helpers.js	Demo helper functions to create additional module edges.
examples/chunk-visualize-demo/src/styles.css	Minimal CSS asset for the demo build.
examples/chunk-visualize-demo/src/router.js	Demo class module for chunk graph variety.
examples/chunk-visualize-demo/src/main.js	Demo main entry with dynamic imports and exports.
examples/chunk-visualize-demo/src/features/dashboard.js	Demo feature module imported dynamically.
examples/chunk-visualize-demo/src/features/admin.js	Demo feature module imported dynamically.
examples/chunk-visualize-demo/src/components/header.js	Demo component module.
examples/chunk-visualize-demo/src/components/footer.js	Demo component module.
examples/chunk-visualize-demo/src/app.js	Demo app wiring that references multiple modules.
examples/chunk-visualize-demo/rolldown.config.js	Demo config enabling the chunk visualization plugin.
examples/chunk-visualize-demo/package.json	Declares the new example package and build script.
examples/chunk-visualize-demo/README.md	Explains plugin usage, output, and how to analyze the JSON.
crates/rolldown_plugin_chunk_visualize/src/lib.rs	New Rust plugin implementation: builds chunk/module graph and emits JSON asset.
crates/rolldown_plugin_chunk_visualize/Cargo.toml	New crate manifest for the plugin.
crates/rolldown_binding/src/options/plugin/types/binding_builtin_plugin_name.rs	Adds `builtin:chunk-visualize` to the binding builtin plugin enum.
crates/rolldown_binding/src/options/plugin/config/mod.rs	Registers and re-exports the new binding config type.
crates/rolldown_binding/src/options/plugin/config/binding_chunk_visualize_plugin_config.rs	New NAPI object config and conversion into `ChunkVisualizePlugin`.
crates/rolldown_binding/src/options/plugin/binding_builtin_plugin.rs	Instantiates the new plugin from binding options.
crates/rolldown_binding/Cargo.toml	Adds dependency on `rolldown_plugin_chunk_visualize`.
Cargo.toml	Adds `rolldown_plugin_chunk_visualize` to workspace dependencies.
Cargo.lock	Records the new crate and dependency edges.

Files not reviewed (1)

pnpm-lock.yaml: Language not supported

examples/chunk-visualize-demo/rolldown.config.js

crates/rolldown_plugin_chunk_visualize/src/lib.rs

packages/rolldown/src/builtin-plugin/chunk-visualize-plugin.ts

packages/rolldown/tests/fixtures/builtin-plugin/chunk-visualize/_config.ts

Copilot

Pull request overview

Copilot reviewed 29 out of 31 changed files in this pull request and generated 3 comments.

Files not reviewed (1)

pnpm-lock.yaml: Language not supported

examples/chunk-visualize-demo/README.md

crates/rolldown_plugin_chunk_visualize/src/lib.rs

packages/rolldown/tests/fixtures/builtin-plugin/chunk-visualize/_config.ts

crates/rolldown_plugin_chunk_visualize/src/lib.rs

Copilot

Pull request overview

Copilot reviewed 31 out of 33 changed files in this pull request and generated 1 comment.

Files not reviewed (1)

pnpm-lock.yaml: Language not supported

examples/chunk-visualize-demo/README.md

graphite-app · 2026-02-09T08:52:38Z

Merge activity

Feb 9, 8:52 AM UTC: IWANABETHATGUY added this pull request to the Graphite merge queue.
Feb 9, 9:02 AM UTC: Merged by the Graphite merge queue.

@sapphi-red

## [1.0.0-rc.4] - 2026-02-11 💡 Granular `comments` Option - New `output.comments` option provides fine-grained control over comment preservation - The `output.legalComments` option is now deprecated and use `comments.legal` instead ### 🚀 Features - rename error name to `RolldownError` from `RollupError` (#8262) by @sapphi-red - add hidden `resolve_tsconfig` function for Vite (#8257) by @sapphi-red - rust: introduce `rolldown_watcher` (#8161) by @hyf0 - unify `comments` and `legalComments` into a single granular `comments` option (#8229) by @IWANABETHATGUY - add builtin plugin for visualizing chunk graph (#8162) by @IWANABETHATGUY - show import declaration location in AssignToImport errors (#8222) by @Copilot - show import declaration span in CannotCallNamespace error (#8223) by @Copilot - emit error when plugin accidentally removes runtime module symbols (#8203) by @IWANABETHATGUY - support tsconfig loading & inputMap for `transform` (#8180) by @sapphi-red - rolldown_plugin_vite_reporter: update warning message to link to Rolldown docs (#8205) by @sapphi-red ### 🐛 Bug Fixes - avoid panic on untranspiled JSX syntax by reporting a diagnostic error (#8226) by @IWANABETHATGUY - rolldown_plugin_vite_import_glob: relax absolute path check and improve invalid glob warning (#8219) by @shulaoda - merge chunks after detect circular reference (#8154) by @IWANABETHATGUY - rust: detect runtime module side effects based on its content (#8209) by @hyf0 ### 🚜 Refactor - rename `other` to `jsdoc` in comments options (#8256) by @IWANABETHATGUY - rename chunk-visualize plugin with bundle-analyzer plugin (#8255) by @IWANABETHATGUY - remove EXPORT_UNDEFINED_VARIABLE error (#8228) by @Copilot - consolidate missing runtime symbol errors into a single diagnostic (#8220) by @IWANABETHATGUY - stabilize `parse` and `parseSync` (#8215) by @sapphi-red - return errors instead of panicking on builtin plugin conversion failure (#8217) by @shulaoda - expose `parse` / `minify` / `transform` from `rolldown/utils` (#8214) by @sapphi-red - prepare defer chunk merging (#8153) by @IWANABETHATGUY ### 📚 Documentation - remove `<script>` escape behavior difference note from `platform` option (#8253) by @sapphi-red - TypeScript & JSX support by plugins (#8183) by @sapphi-red ### 🧪 Testing - ensure runtime module is preserved even if it's not used but has side effects (#8213) by @hyf0 ### ⚙️ Miscellaneous Tasks - deps: update oxc to v0.113.0 (#8267) by @renovate[bot] - deps: update dependency oxlint-tsgolint to v0.12.0 (#8272) by @renovate[bot] - deps: update oxc apps (#8269) by @renovate[bot] - deps: update test262 submodule for tests (#8261) by @sapphi-red - deps: update crate-ci/typos action to v1.43.4 (#8260) by @renovate[bot] - deps: update dependency esbuild to v0.27.3 (#8250) by @renovate[bot] - deps: update rust crates (#8244) by @renovate[bot] - deps: update dependency semver to v7.7.4 (#8247) by @renovate[bot] - deps: update github-actions (#8243) by @renovate[bot] - deps: update npm packages (#8245) by @renovate[bot] - deps: update oxc resolver to v11.17.1 (#8240) by @renovate[bot] - deps: update rust crate oxc_sourcemap to v6.0.2 (#8241) by @renovate[bot] - rust: handle ignored `RUSTSEC-2025-0141` cargo check error (#8235) by @hyf0 - deps: update dependency oxlint-tsgolint to v0.11.5 (#8233) by @renovate[bot] - deps: update dependency rolldown-plugin-dts to ^0.22.0 (#8232) by @renovate[bot] - deps: update crate-ci/typos action to v1.43.3 (#8225) by @renovate[bot] - deps: update dependency rolldown-plugin-dts to v0.21.9 (#8224) by @renovate[bot] - deps: update crate-ci/typos action to v1.43.2 (#8212) by @renovate[bot] - remove rolldown_plugin_vite_wasm_helper (#8207) by @shulaoda - build docs for production (#8206) by @sapphi-red Co-authored-by: shulaoda <[email protected]>

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IWANABETHATGUY changed the title ~~feat: chunk visualization plugin~~ feat: chunk metadata plugin Feb 8, 2026

IWANABETHATGUY changed the title ~~feat: chunk metadata plugin~~ feat: add builtin plugin for visualizing chunk graph Feb 8, 2026

IWANABETHATGUY mentioned this pull request Feb 8, 2026

feat: markdown format & optimization suggestions for chunk visualize plugin #8242

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feat: add builtin plugin for visualizing chunk graph (#8162)

1251959

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refactor: rename chunk-visualize plugin with bundle-analyzer plugin #8255

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This was referenced Feb 11, 2026

release: v1.0.0-rc.4 #8271

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release: v1.0.0-rc.4 #8278

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