[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
tsdown (source)	^0.21.10 → ^0.23.0

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Release Notes

rolldown/tsdown (tsdown)

v0.23.7

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[!NOTE]
v0.23.6 was skipped on purpose: its release failed, so this release follows v0.23.5 directly.

Notes

rolldown-plugin-dts is now v0.30. Full details are in the rolldown-plugin-dts v0.30.0 release notes.

Migration

dts.entry only filters entries. Only entries that match get declaration files. A matching file that is not an entry no longer gets its own declaration file. To emit declarations for such a file, add it to entry. The filter now applies to .d.cts as well as .d.mts.

dts.entry is resolved from cwd. Patterns are relative to tsdown's cwd, the same as the top-level entry, instead of process.cwd(). This only matters when the two differ, e.g. in workspace builds. Set dts.cwd to override it.

dts.emitDtsOnly and dts.dtsInput are deprecated. Use dts.dtsOnly instead. The old names still work but log a warning.

Highlights

• dts: An entry's file-level doc comment is kept in its declaration file.
• dts: Declaration files no longer contain a dangling sourceMappingURL.
• dts: CJS declaration builds no longer emit a throwaway JS chunk. With the tsc generator, they build one program for all entries.
• tsgo (experimental): Diagnostics show code context in color terminals, and packages from project references and files outside the tsconfig directory now get declarations.
• Agent skill: The npm package now ships a small tsdown skill. pnpm 12.11+ can link it into agent skill directories, and it points agents to the full skill on GitHub for the installed version.

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   🚀 Features

• Ship a skill facade in the npm package  -  by @​sxzzbot in #​1122 (6ad05)
• dts: Upgrade rolldown-plugin-dts to v0.30  -  by @​sxzzbot in #​1123 (d351b)

    View changes on GitHub

v0.23.5

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Notes

rolldown-plugin-dts is now v0.29. tsdown passes dts options through to it unchanged, so its deprecations show up in your config too. Full details are in the rolldown-plugin-dts v0.29.0 release notes.

Migration

tsc-only dts options move under dts.tsc. The top-level build, incremental, parallel, eager, newContext and vue options still work but log a deprecation warning. Setting the same option at both levels throws an error. emitJs stays at the top level.

 export default defineConfig({
   dts: {
-    vue: true,
+    tsc: { vue: true },
   },
 })

tsgo (experimental, not covered by semver):

• @typescript/native-preview is no longer supported. Install TypeScript 7.1+ (typescript@7.1.0-beta), or point tsgo.moduleUrl at another build.
• On TypeScript 7.1+, tsgo.path is the API server executable, not the tsgo CLI. You usually don't need to set it.
• Declaration maps come only from compilerOptions.declarationMap: true in tsconfig; the sourcemap option no longer enables them.
• TypeScript 7.0 still works with a deprecation warning, but that backend will be removed soon.

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   🚀 Features

• css: Support css: false to disable built-in CSS handling  -  by @​sxzzbot in #​1113 (181af)
• dts: Upgrade rolldown-plugin-dts to v0.29, upgrade deps  -  by @​sxzzbot in #​1121 (e12ab)

   🐞 Bug Fixes

• css: Remove dangling requires and handle CSS extensions in chunk names  -  by @​sxzzbot in #​1114 (c8ca3)

   🏎 Performance

• deps: Read each package.json once when resolving dep subpaths  -  by @​Cherry and @​sxzzbot in #​1093 (4435a)

    View changes on GitHub

v0.23.4

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   🚀 Features

• cjs: Warn when platform is ignored for the CJS format  -  by @​sxzz and @​sxzzbot in #​1111 (58003)
• config: Support multiple env files  -  by @​sxzz and @​sxzzbot in #​1110 (5d558)

   🐞 Bug Fixes

• attw: Apply profiles to file-based problems  -  by @​sxzz and @​sxzzbot in #​1108 (a853d)
• config: Ignore empty env file paths and scope env deps per watcher  -  by @​sxzzbot (17bd0)
• css: Inline ?inline CSS imported from dependencies  -  by @​sxzz and @​sxzzbot in #​1109 (75a78)

   🏎 Performance

• Use tinyps in hooks  -  by @​43081j in #​1112 (f925e)

    View changes on GitHub

v0.23.3

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   🐞 Bug Fixes

• Downgrade rolldown-plugin-dts to 0.28 to restore TypeScript 7.0 support  -  by @​sxzz and @​sxzzbot in #​1107 (0344c)

    View changes on GitHub

v0.23.2

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   🚀 Features

• Add JSON schema for config  -  by @​Sandbye and @​sxzz in #​1074 (2410e)

   🐞 Bug Fixes

• css: Respect Lightning CSS modules options  -  by @​sxzz in #​1103 (490ec)

    View changes on GitHub

v0.23.1

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   🐞 Bug Fixes

• Preserve false tsconfig option  -  by @​Masutayunikon in #​1065 (407f8)
• entry: Honor custom root for object entry  -  by @​giaBaoJS in #​1072 (17452)
• pkg: Pack tarball inside npm publish --dry-run  -  by @​giaBaoJS in #​1076 (83f0c)

    View changes on GitHub

v0.23.0

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   🧭 Migration Guide

Most users can upgrade directly. Before upgrading, run one final build with tsdown@0.22.14 and resolve all deprecation warnings.

• config:
  • bundle: false → unbundle: true; bundle: true can be removed
  • outExtension → outExtensions
  • publicDir / --public-dir → copy / --copy
  • removeNodeProtocol: true → nodeProtocol: 'strip'
  • injectStyle → css.inject
• deps:
  • inlineOnly / deps.onlyAllowBundle → deps.onlyBundle
  • skipNodeModulesBundle: true → deps.neverBundle: true
  • resolveDepSubpath now defaults to false; set it to true to preserve the previous behavior
• dts:
  • rolldown-plugin-dts was upgraded from 0.27.13 to 0.28.5
  • dts.oxc: true → dts.generator: 'oxc'
  • dts.tsgo: true → dts.generator: 'tsgo'; oxc and tsgo objects now only configure their respective generators
  • dts.volarPlugins → dts.customLanguages; rename each language's create hook to createVolarPlugins
  • Custom languages, including vue, now throw when combined with an incompatible generator
  • dts.cjsReexport was removed; dual-format builds now generate CJS declarations in a separate pass
• attw:
  • The default profile changed from strict to esm-only; set profile: 'strict' to preserve the previous checks
• programmatic API:
  • build() now returns { bundles, watch }; replace const bundles = await build() with const { bundles } = await build()
• requirements:
  • Node.js 25 is no longer supported; use ^22.18.0, ^24.11.0, or >=26.0.0
  • rolldown-plugin-dts now requires Rolldown 1.2.x
  • Legacy types and typesVersions fallbacks were removed; use TypeScript's bundler, node16, or nodenext module resolution

   🚨 Breaking Changes

• Drop support for Node.js 25  -  by @​sxzz (26950)
• Remove deprecated tsup compatibility options  -  by @​sxzz (50766)
• Drop types and typesVersionsfields  -  by @​sxzz (be3ea)
• attw:
  • Change default profile to esm-only  -  by @​sxzz (9b3cf)
• deps:
  • Remove deprecated deps.onlyAllowBundle  -  by @​sxzz (30c55)
  • Disable resolveDepSubpath by default  -  by @​sxzz (d300f)
  • Remove deprecated skipNodeModulesBundle  -  by @​sxzz (f2a3d)
• dts:
  • Remove dts.cjsReexport option  -  by @​sxzz (9c70f)
  • Make dts.generator the only way to select generator  -  by @​sxzz (eb75f)

   🚀 Features

• Expose programmatic watch controls  -  by @​sxzz in #​1062 (96a40)
• css: Support function form for css.modules.localsConvention  -  by @​sxzz and @​lazerg (b566f)
• report: Add summary option to skip per-file size logs  -  by @​lazerg in #​1036 (020e9)

   🐞 Bug Fixes

• Allow unplugin-unused v0.5+  -  by @​sxzz (53c78)
• Ignore optional dependencies in type definitions  -  by @​sxzz (94622)
• cli:
  • Camel-case nested flag keys  -  by @​sxzz (bf53f)
• css:
  • Watch files imported via @import  -  by @​lazerg in #​1038 (ebee5)
• deps:
  • Apply resolveDepSubpath when neverBundle is true  -  by @​lazerg in #​1053 (4943c)
• exports:
  • Scope inlined dependencies to configs with exports  -  by @​lazerg in #​1040 (d5b80)
• migrate:
  • Pin migrated projects to tsdown 0.22.14  -  by @​sxzz (113fb)
  • Support non-interactive environments  -  by @​sxzz (51e41)

   🏎 Performance

• Remove asyncDispose polyfill  -  by @​sxzz (82675)
• Replace ansis with util.styleText  -  by @​sxzz (be6bf)

    View changes on GitHub

v0.22.14

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   🚀 Features

• Add CLI build concurrency option  -  by @​sxzz and Jeroen Zwartepoorte (8a14c)

    View changes on GitHub

v0.22.13

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   🚀 Features

• deps: Support neverBundle: true to externalize all dependencies  -  by @​sxzz (d30a7)

   🐞 Bug Fixes

• Prevent tinyexec from modifying PATH  -  by @​sxzz (d84c5)

    View changes on GitHub

v0.22.12

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   🚨 Breaking Changes

• exe: Standardize minimum Node.js version  -  by @​sxzz (85f23)

    View changes on GitHub

v0.22.11

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   🚀 Features

• deps: Add resolveDepSubpath option  -  by @​sxzz in #​1026 (346cb)

    View changes on GitHub

v0.22.10

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   🚀 Features

• exe: Support custom node index and download url  -  by @​anytinz in #​1023 (0d24a)

   🐞 Bug Fixes

• deps: External peerDependenciesMeta deps  -  by @​sxzz (bad1b)
• exe: Handle Windows node archives on Linux  -  by @​sxzz (074e4)

    View changes on GitHub

v0.22.9

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   🚀 Features

• Upgrade rolldown to v1.2  -  by @​sxzz (91bb5)

   🐞 Bug Fixes

• deps: Check dynamic imports in onlyImport  -  by @​sxzz in #​1019 (a625a)

    View changes on GitHub

v0.22.8

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   🚀 Features

• deps: Add onlyImport option  -  by @​sxzz and Claude Fable 5 (c5798)

   🐞 Bug Fixes

• config: Concat plugins arrays when merging config  -  by @​sxzz (b1c80)

    View changes on GitHub

v0.22.7

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   🚀 Features

• logger: Add suppressWarnings option to filter warnings  -  by @​sxzz (dc510)

    View changes on GitHub

v0.22.6

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No significant changes

    View changes on GitHub

v0.22.5

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   🚀 Features

• Support TS 7  -  by @​sxzz (b21f1)

   🐞 Bug Fixes

• Evaluate banner/footer function addon per chunk  -  by @​spokodev in #​1011 (517c5)
• shims: Don't emit esm shim banner in cjs output for unbundle  -  by @​materwelonDhruv in #​991 (4bb30)

    View changes on GitHub

v0.22.4

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   🚀 Features

• Export tsdown version  -  by @​userquin in #​976 (a0938)

   🐞 Bug Fixes

• Respect failOnWarn regardless of logger level  -  by @​spokodev and @​sxzz in #​960 (f635a)
• create-tsdown: Skip cd hint for current directory  -  by @​jong-kyung in #​1002 (66983)
• css: Generate source maps to avoid SOURCEMAP_BROKEN warning  -  by @​ocavue in #​982 (84b7c)
• pkg: Await readFile before removing temp pack directory  -  by @​azais-corentin in #​999 (c0a48)

   🏎 Performance

• Reduce install size  -  by @​sxzz (10e6f)
• css: Reuse Sass async compiler  -  by @​sxzz in #​1001 (0aa2b)

    View changes on GitHub

v0.22.3

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   🚨 Breaking Changes

• Drop node 24.0 - 24.10 support  -  by @​sxzz (a2eac)

   🐞 Bug Fixes

• Inline CI detection  -  by @​sxzz (bfc64)

   🏎 Performance

• css: Skip renderChunk when no CSS has been collected  -  by @​ShMcK in #​967 (9f051)

    View changes on GitHub

v0.22.2

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   🐞 Bug Fixes

• Pin rolldown to minor  -  by @​sxzz (69e78)

    View changes on GitHub

v0.22.1

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   🚀 Features

• dts: Add deps.dts option to override dependency bundling for declaration files  -  by @​sxzz (881bf)

   🐞 Bug Fixes

• Improve error handling for unsupported TypeScript syntax on Node.js  -  by @​sxzz (b93db)
• Add extra space for emoji rendering in Windows Terminal  -  by @​sxzz (925cc)
• unbundle: Add shims support for unbundled builds  -  by @​sxzz (fc991)

    View changes on GitHub

v0.22.0

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   🚨 Breaking Changes

• Drop Node.js < 22.18.0 support, make unrun optional, add tsx config loader  -  by @​sxzz (a1042)
• dts: Auto-enable dts when tsconfig declaration is true  -  by @​sxzz in #​872 (085f0)
• publint: Use pkg from publint results, require publint v0.3.8+  -  by @​sxzz (413bb)

   🚀 Features

• Upgrade rolldown to 1.0.0-rc.18  -  by @​sxzz (66085)
• Upgrade rolldown to v1.0.0  -  by @​sxzz (fabba)
• exports: Auto-enable bin detection by default  -  by @​sxzz in #​873 (abda9)

   🐞 Bug Fixes

• Explicitly drop node 23 support  -  by @​sxzz (85e65)
• debug: Enhance debug logging for pack tarball  -  by @​sxzz and Copilot (5de04)
• exports: Detect types fields nested in conditional exports  -  by @​sxzz (82fa1)
• pkg: Fix duplicate configuration warning logic  -  by @​ho991217 and @​sxzz in #​935 (6a0d9)

🔄 Migration Guide

Node.js version

Upgrade to Node.js 22.18.0 or later. Bun and Deno remain supported (experimental).

unrun is no longer bundled

If your environment relies on the unrun config loader (i.e. you're on a Node version without native TypeScript support and use the default auto loader), install it manually:

npm i -D unrun

# or, alternatively, the new tsx loader:
npm i -D tsx

If you use Node.js 22.18.0+ with native TypeScript support, no change is needed — the auto loader will pick native.

dts auto-enabled from tsconfig

If your tsconfig.json has compilerOptions.declaration: true but you do not want tsdown to emit .d.ts files, opt out explicitly:

// tsdown.config.ts
export default defineConfig({
  dts: false,
})

exports.bin auto-detection

Any entry chunk containing a shebang (e.g. #!/usr/bin/env node) now causes tsdown to write a bin field in package.json automatically. The semantics differ slightly from explicit bin: true:

Value	Single shebang	Multiple shebangs	No shebangs
(unset)	Auto-set bin	Warn, skip	Silent
true	Auto-set bin	Throw	Warn
false	No bin	No bin	No bin

To opt out entirely:

export default defineConfig({
  exports: { bin: false },
})

Links

• tsdown Documentation
• v0.22.0-beta.1 Release
• v0.22.0-beta.2 Release
• v0.22.0-beta.3 Release
• Full diff from v0.21.10

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