Module copy_error 

Faithful port of copyError (Analysis/src/Error.cpp:1463-1705).

The C++ original is a function template whose body is a chain of if constexpr (std::is_same_v<T, ...>) branches, so the active branch is selected at compile time from the concrete error type T the caller instantiates it with. The faithful Rust equivalent of that compile-time type switch is a trait: copy_error<T> forwards to T’s CopyError implementation, and each branch of the original if constexpr cascade becomes one impl CopyError for <ErrorType> whose body is exactly that branch (empty for the error kinds that hold no TypeId/TypePackId).

::Luau::clone(ty, destArena, cloneState) is an overload set keyed on the argument type; the ports preserve that as three separate free functions (TypeId, TypePackId, TypeFun), wrapped below as clone_type, clone_pack and clone_type_fun.

Traits

CopyError

Faithful realization of the if constexpr type switch in copyError.

Functions

copy_error

template<typename T> void copyError(T& e, TypeArena& destArena, CloneState& cloneState).