pub fn keyof_function_impl(
type_params: Vec<TypeId>,
pack_params: Vec<TypePackId>,
ctx: *mut TypeFunctionContext,
is_raw: bool,
) -> TypeFunctionReductionResultpub fn keyof_function_impl(
type_params: Vec<TypeId>,
pack_params: Vec<TypePackId>,
ctx: *mut TypeFunctionContext,
is_raw: bool,
) -> TypeFunctionReductionResult