Module is 

Source: Analysis/include/Luau/Type.h:1077-1087 (hand-ported)

Functions

is

C++ template<typename... Ts, typename T> bool is(T&& tv) — tests whether tv’s variant holds any of Ts... (get<Ts>(tv) || ...). The Rust port resolves variant membership per-type via match/get-if traits, so every caller is monomorphized to a concrete predicate; this unbounded template generic over Type has no call site.