rolldown/tsdown v0.23.0 on GitHub

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:
- Select a generator with dts.generator, for example { generator: 'oxc' }
- 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
- The packages no longer publish legacy types and typesVersions fallbacks; use TypeScript’s bundler, node16, or nodenext module resolution

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)

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)

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)