TS package not getting access to some of dependencies's built files

[MoreRustLessAccess]

o/

I'm a bit stuck trying to convert my turbo monorepo to bazel.
I have three packages

• library-base
• package-one
• package-two

Both package-one and package-two depend on library-base for tsconfig and this works fine.
package-two also depends on package-one, however this fails to build due it not being able to import package-one despite it being listed in the dependencies.

I used --sandbox_debug when building package-two and it can only see the *.d.ts files produced by building package-one, not the *.js nor *.js.map files also produced when building.
I cd'd into package-one and built the :pkg target, which shows the *.js and *.js.map but not the *.d.ts

Demo repo: https://github.com/MoreRustLessAccess/bazel-broken-typescript

[MoreRustLessAccess]

Managed to get this working through setting a explicit rootDir in the tsconfig. Bit unsure why this works, but at least it works!