How to preserve directives (like "use client") when bundling with tsdown

[Alvi24]

i want to preserve the directives of files when bundling with tsdown as the default behavior removes them. Is there a solution to this?

[sxzz]

Preserved by default.

[Alvi24]

if the files are grouped together in a barrel file (index.ts) then the directives are not preserved

[sxzz]

Please raise an issue with minimal reproduction.

[sxzz]

https://rolldown.rs/in-depth/directives#other-directives