rolldown/tsdown v0.23.5 on GitHub

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.

🚀 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)