When adding clojure.data/diff to babashka I hit some reflection warnings in the clojure.data namespace which made it incompatible with GraalVM native-image. Getting rid of those is fairly trivial and makes it work with GraalVM. Patch is coming up.
Screened by: Alex Miller
I don't think you need the ^Object on b right? Otherwise looks good.
Removed the type hint on b.
Patch applied for 1.10.2