From 5b155e76d9073b5d0163a3c91c5925067d0684fe Mon Sep 17 00:00:00 2001
From: Nihanth Subramanya <nhnt11@gmail.com>
Date: Fri, 22 Jan 2021 17:47:36 +0100
Subject: [PATCH] Add constant for NXDOMAIN

Trivially OR'ing 0x03 to the flags works to set NXDOMAIN in the response header. Exposing a constant for this makes it accessible and obvious.
---
 index.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/index.js b/index.js
index 0c14525..720ffb0 100644
--- a/index.js
+++ b/index.js
@@ -1644,6 +1644,7 @@ exports.RECURSION_AVAILABLE = 1 << 7
 exports.AUTHENTIC_DATA = 1 << 5
 exports.CHECKING_DISABLED = 1 << 4
 exports.DNSSEC_OK = 1 << 15
+exports.NXDOMAIN = 0x03
 
 exports.encode = function (result, buf, offset) {
   const allocing = !buf