When compiled with ReScript 12, the current Interop for the navigator modules as implemented in

TypeError: Cannot read property 'make' of undefined

This is because it relies on undocumented internals of ReScript 11, specifically thatNavigator andScreen are treated as reserved words and therefore prefixed with$$ in the JS output (butGroup isn't).

In ReScript 12, this behavior changed withrescript-lang/rescript#6831, andNavigator andScreen are no longer prefixed.