chore(deps): update dependency tsdown to v0.21.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
tsdown (source)	0.21.0 → 0.21.1

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Release Notes

rolldown/tsdown (tsdown)

v0.21.1

Compare Source

   🚨 Breaking Changes

• css: Move all CSS support to @tsdown/css package  -  by @​sxzz in #​809 (1b1a1)

[!IMPORTANT]
If you are using CSS features (e.g., CSS imports), you now need to manually install the @tsdown/css package:

npm install @​tsdown/css -D
# or
pnpm add @​tsdown/css -D

Note: CSS support is still an experimental feature and does not follow SemVer. Breaking changes may occur in any release.

   🚀 Features

• css:
  • Add css.inject option to preserve CSS imports in JS output  -  by @​sxzz and Claude Haiku 4.5 in #​808 (ad745)
  • Support ?inline query for CSS imports  -  by @​sxzz in #​810 (b7379)
  • Support node_modules package resolution  -  by @​sxzz and Claude Haiku 4.5 in #​812 (b06b4)

   🐞 Bug Fixes

• Generate correct filename for sass files when dts is enabled  -  by @​ocavue in #​802 (848a7)
• css:
  • Handle virtual module IDs from framework plugins  -  by @​sxzz (c421f)
  • Ignore css imports with URL query  -  by @​ocavue and @​sxzz in #​806 (c1d23)

    View changes on GitHub

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