rolldown 1.0.0-beta.43

v1.0.0-beta.43

on Node.js NPM

[1.0.0-beta.43] - 2025-10-13

⚡ Parallel Sourcemap Generation with experimental.nativeMagicString

• 2.18x faster builds than Babel Parser + JS MagicString
• Biggest gains for plugins heavily using transform hook

Before: Transform + sourcemap both blocked in JS ❌
After: Only transform in JS, sourcemaps in Rust thread ✅

Comparison in apps/10000 benchmark:

• Babel Parser + JS MagicString: baseline
• Oxc + native MagicString: 2.18x faster 🚀

See more details: Document & Benchmark

🚀 Features

• add filterVitePlugins utility that uses to skip vite plugins using apply: "serve" (#6502) by @IWANABETHATGUY
• rolldown_plugin_vite_html: align partial can inline entry logic (#6500) by @shulaoda
• rolldown_plugin_vite_html: align get_imported_chunks logic (#6499) by @shulaoda
• rolldown_plugin_vite_html: align HtmlTagDescriptor (#6498) by @shulaoda
• rolldown_plugin_vite_html: align partial utility functions logic (#6497) by @shulaoda
• rolldown_html_vite_html: align partial inject chunk asset links logic (#6496) by @shulaoda
• rolldown_plugin_vite_html: align processedHtml logic (#6494) by @shulaoda
• add nativeMagicString options (#6469) by @IWANABETHATGUY
• rust: eagerly cleanup resources when calling close (#6483) by @hyf0
• rust: varify if bundler is closed for public API (#6481) by @hyf0
• replace [format] placeholder in chunk filename templates (#6476) by @elecmonkey
• implement synchronous JS callback invocation for paths function (#6474) by @IWANABETHATGUY
• rolldown_plugin_vite_html: align partial transform hook logic (#6471) by @shulaoda
• Support output.paths (#6470) by @IWANABETHATGUY
• rolldown_plugin_vite_html: align script urls handle logic (#6466) by @shulaoda
• add validation for preserveEntrySignatures with includeDependenciesRecursively option (#6468) by @hyf0
• rolldown_plugin_vite_html: align partial logic (#6465) by @shulaoda
• background sourcemap generation for Javascript transform hooks (#6293) by @IWANABETHATGUY
• rolldown_plugin_vite_html: handle style tag (#6464) by @shulaoda
• rolldown_plugin_vite_html: handle inline style attribute (#6463) by @shulaoda
• rolldown_plugin_vite_html: patially handle vite-ignore attribute (#6462) by @shulaoda
• dev/node: expose errors of on_hmr_updatrs to node (#6454) by @hyf0
• dev/node: expose errors of on_output to node (#6453) by @hyf0
• dev: expose hmr errors on on_hmr_updatrs callback (#6443) by @hyf0

🐛 Bug Fixes

• fallback sourcemap generation for experimental.nativeMagicString: false (#6488) by @IWANABETHATGUY
• take resolve.modules into account (#6484) by @Pickachu
• rolldown: increase tokio blocking threads size for watch mode (#6467) by @Brooooooklyn
• use len_utf16 in magic_string CharToByteMapper (#6461) by @IWANABETHATGUY
• pass advancedChunks#includeDependenciesRecursively to rust (#6448) by @hyf0
• dev: should compute hmr update correctly for multiple clients (#6442) by @hyf0
• allow specifying packageJsonPath in PluginContext.load (#6439) by @sapphi-red
• use transform.target as default for minify target when minify: { compress: true } (#6433) by @sapphi-red

🚜 Refactor

• extract background sourcemap handling into separate methods (#6501) by @IWANABETHATGUY
• rust: only expose methods of Bundler for public usage (#6480) by @hyf0
• dev/node: use napi object instead clss for BindingClientHmrUpdate (#6456) by @hyf0
• dev/node: improve DevOnHmrUpdates API (#6455) by @hyf0

📚 Documentation

• update team page and add acknowledgements page (#6495) by @hyf0
• restructure website and files (#6492) by @hyf0
• correct incorrect documentation about the config file (#6472) by @jsparkdev
• options: experimental.strictExecutionOrder (#6450) by @hyf0
• adding why-plugin-hook-filter in depth (#6446) by @IWANABETHATGUY

⚡ Performance

• rolldown: replace serde JSON string escape with simd impl (#6475) by @Brooooooklyn

⚙️ Miscellaneous Tasks

• docs: redirect removed path to new locations for compatibility (#6493) by @hyf0
• deps: lock file maintenance npm packages (#6490) by @renovate[bot]
• deps: update github-actions (major) (#6415) by @renovate[bot]
• deps: update github-actions (#6489) by @renovate[bot]
• rust: add comment for DiagnosticOptions#stabilize_path (#6447) by @hyf0
• rust: remove unused BindingHmrOutput (#6457) by @hyf0
• rolldown_plugin_vite_html: tweak utils.rs (#6460) by @shulaoda
• change node version to lts (#6435) by @iiio2
• rust/test: split hmr related structs into their own files (#6445) by @hyf0
• deps: update crate-ci/typos action to v1.38.1 (#6452) by @renovate[bot]
• rust/test: render hmr errors (#6444) by @hyf0
• examples: add "type": "module" in package.json (#6441) by @iiio2

❤️ New Contributors

• @Pickachu made their first contribution in #6484
• @elecmonkey made their first contribution in #6476
• @jsparkdev made their first contribution in #6472