rolldown 1.0.0-beta.53

v1.0.0-beta.53

on Node.js NPM

[1.0.0-beta.53] - 2025-12-03

💥 Breaking Changes

• Drop i686-pc-windows-msvc target support

🚀 Chunk Merging Optimization

• Rolldown now automatically merges shared chunks when entries import each other (when preserveEntrySignature is not strict)

Before:
entry.js   → imports → shared.js (common chunk)
entry2.js  → imports → shared.js
Output: 3 chunks (entry.js, entry2.js, shared.js)

After:
entry.js   → contains shared code
entry2.js  → imports → entry.js
Output: 2 chunks (entry.js, entry2.js)

💥 BREAKING CHANGES

• drop i686-pc-windows-msvc target support (#7230) by @sapphi-red

🚀 Features

• rolldown_plugin_vite_manifest: pass normalized options to isLegacy callback (#7321) by @shulaoda
• plugin/vite-resolve: add disableCache option (#6763) by @sapphi-red
• rolldown: export createTokioRuntime for tsdown (#7264) by @shulaoda
• rolldown_plugin_vite_html: sync moduleSideEffects for already loaded modules (#7254) by @shulaoda
• rolldown_plugin_vite_html: load module scripts with side effects to prevent tree-shaking (#7244) by @shulaoda
• rolldown_plugin_vite_css_post: implement cssScopeTo for scoped CSS tree-shaking (#7240) by @shulaoda

🐛 Bug Fixes

• export default class decl __name runtime insertion (#7316) by @IWANABETHATGUY
• chunk side effects calculation (#7273) by @IWANABETHATGUY
• node: output.generateCode.preset: 'es2015' should set output.generateCode.symbols: true by default (#7314) by @sapphi-red
• skip name helper for classes with static name property (#7312) by @IWANABETHATGUY
• preserve chunk imports relationship after chunk merging (#7303) by @shulaoda
• dev: make register_modules async (#7289) by @hyf0
• preserve computed property in object destructuring (#7288) by @IWANABETHATGUY
• support dynamic imports with shared dependencies (#7261) by @IWANABETHATGUY
• call defer_sync_scan_data in non-incremental build mode (#7255) by @shulaoda
• optimize chunk merging for shared entry points (#7194) by @IWANABETHATGUY
• add indentation for UMD format output (#7263) by @IWANABETHATGUY
• rolldown_plugin_vite_css_post: pass options to isLegacy callback for proper legacy detection (#7260) by @shulaoda
• rolldown_plugin_vite_css_post: also detect ?inline=true query for inlined CSS (#7245) by @shulaoda
• rolldown_plugin_vite_css_post: distinguish empty CSS from no CSS (#7241) by @shulaoda
• add Windows support for t-run command (#7242) by @IWANABETHATGUY
• cjs: prevent duplicate require declarations for external modules with preserveModules (#7234) by @logaretm
• rolldown_plugin_vite_resolve: resolve from root for virtual modules (#7236) by @sapphi-red
• include entry level external modules in chunk exports (#7218) by @IWANABETHATGUY

🚜 Refactor

• dev: make removeClient async (#7313) by @hyf0
• move chunk merging code out of code_splitting.rs (#7285) by @IWANABETHATGUY
• extract common function util for chunk merging (#7271) by @IWANABETHATGUY
• use iterative method to merge chunks (#7256) by @IWANABETHATGUY
• use concat_string! instead of string replace for generating chunk level exports (#7247) by @IWANABETHATGUY

📚 Documentation

• add warning to experimental.resolveNewUrlToAsset about JS/TS files (#7300) by @Copilot
• add sequential hook execution difference in plugin-api.md (#7308) by @Copilot
• add migration example from onwarn to onLog (#7299) by @Copilot
• add migration example for manualChunks to advancedChunks (#7298) by @Copilot
• deps: bump vitepress to fix build (#7307) by @sapphi-red
• examples & text for experimental.resolveNewUrlToAsset (#7259) by @TheAlexLichter

⚡ Performance

• rolldown_plugin_vite_css_post: lazily load cssScopeTo from JS module options (#7253) by @shulaoda
• rolldown_plugin_vite_css_post: avoid unnecessary string clones in resolve_asset_urls_in_css (#7250) by @shulaoda

🧪 Testing

• generate relative path like name in advanced chunks (#7267) by @IWANABETHATGUY
• add test case for preserveEntrySignatures with re-exports (#7279) by @IWANABETHATGUY
• add test262 integration tests (#7196) by @sapphi-red

⚙️ Miscellaneous Tasks

• deps: update dependency rolldown-plugin-dts to v0.18.1 (#7304) by @renovate[bot]
• enable tracing feature for napi (#7322) by @sapphi-red
• deps: update napi (#7320) by @renovate[bot]
• deps: update oxc (#7318) by @renovate[bot]
• deps: update napi (#7317) by @renovate[bot]
• deps: update oxc to v0.100.0 (#7301) by @renovate[bot]
• deps: downgrade pnpm to 10.23.0 to fix Netlify build (#7306) by @shulaoda
• add trustPolicyExclude for chokidar and semver (#7302) by @sapphi-red
• update pnpm lockfile (#7291) by @IWANABETHATGUY
• deps: update npm packages (#7272) by @renovate[bot]
• deps: update rust crates (#7270) by @renovate[bot]
• deps: update oxc (#7262) by @renovate[bot]
• deps: update github-actions (#7269) by @renovate[bot]
• deps: update dependency dprint-typescript to v0.95.13 (#7268) by @renovate[bot]
• deps: update html5gum to 0.8.1 (#7265) by @shulaoda
• rolldown: remove unused getModuleOptions from PluginContext (#7266) by @shulaoda
• remove unnecessary justfile ignore (#7243) by @IWANABETHATGUY
• deps: update oxc apps (#7238) by @renovate[bot]
• add nul to workaround https://github.com/anthropics/claude-c… (#7237) by @IWANABETHATGUY
• deps: update dependency valibot to v1.2.0 [security] (#7231) by @renovate[bot]
• deps: update crate-ci/typos action to v1.40.0 (#7232) by @renovate[bot]

❤️ New Contributors

• @logaretm made their first contribution in #7234

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