Does importing just a type from a package requires the package to be a dependency?

[rafael-lua]

Hello!

My issue is simple: My build was breaking and when investigating it, I found that it was because I moved a package to dev dependencies rather than a dependency. The reason was that I only used a import { type ... } from it, so it did not seem as a dependency.

I solved by declaring the package as external in uno config externals: ["@unocss/core"].

My question here is if this is the correct behavior and if using external is a solution, or I should indeed declare the package a dependency?