_UnionToTuple

type _UnionToTuple<
    Union,
    Accumulator extends UnknownArray = [],
    Member = UnionMember<Union>
> =
    IsNever<Union> extends true
        ? Accumulator
        : _UnionToTuple<
              ExcludeExactly<Union, Member>,
              [Member, ...Accumulator]
          >;

type _UnionToTuple<
    Union,
    Accumulator extends UnknownArray = [],
    Member = UnionMember<Union>
> =
    IsNever<Union> extends true
        ? Accumulator
        : _UnionToTuple<
              ExcludeExactly<Union, Member>,
              [Member, ...Accumulator]
          >;