ffi_type *ffi(typical->GetFFI());
uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
base += ffi->size * offset;
JSObjectRef owner(internal->GetOwner() ?: object);
ffi_type *ffi(typical->GetFFI());
uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
base += ffi->size * offset;
JSObjectRef owner(internal->GetOwner() ?: object);