Not starlark files but code intel in a Go/C++/Java monorepo managed using Bazel. There’s an open ticket suggesting it’s not supported yet?
Here's some docs on Bazel support for Java/Scala precise code nav: https://sourcegraph.github.io/scip-java/docs/getting-started.... Any languages you're looking for in particular?
So core code navigation functionality ought to work. There are some issues with different language features (macros, newer C++17 and C++20 features), as well as robustness (crashes on indexing certain code) but we're looking into bringing C++ support up to par with other languages.