From 1c95d7b4ff626d8f2b9837ed62f53baaab713813 Mon Sep 17 00:00:00 2001
From: "richard.thake" <richard.thake@gmail.com>
Date: Tue, 23 Aug 2016 22:28:44 +0100
Subject: [PATCH 1/2] Added missing logic to handle undefined le.challenge.get
 exceptions

---
 index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.js b/index.js
index dd6f0ec..8cc1b64 100644
--- a/index.js
+++ b/index.js
@@ -254,7 +254,7 @@ LE.create = function (le) {
     throw new Error("le.challenge.set receives the wrong number of arguments."
       + " You must define setChallenge as function (opts, domain, key, val, cb) { }");
   }
-  if (4 !== le.challenge.get.length) {
+  if (4 !== le.challenge.get.length || le.challenge.get === undefined) {
     throw new Error("le.challenge.get receives the wrong number of arguments."
       + " You must define getChallenge as function (opts, domain, key, cb) { }");
   }

From bef3b8162c81fb7c6ccca135c1009ffe98b54cbb Mon Sep 17 00:00:00 2001
From: "richard.thake" <richard.thake@gmail.com>
Date: Tue, 30 Aug 2016 22:53:01 +0100
Subject: [PATCH 2/2] Amended evaluation logic for handling le.challenge
 values.

---
 index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 8cc1b64..0f13cf1 100644
--- a/index.js
+++ b/index.js
@@ -254,7 +254,7 @@ LE.create = function (le) {
     throw new Error("le.challenge.set receives the wrong number of arguments."
       + " You must define setChallenge as function (opts, domain, key, val, cb) { }");
   }
-  if (4 !== le.challenge.get.length || le.challenge.get === undefined) {
+  if (le.challenge.get && 4 !== le.challenge.get.length) {
     throw new Error("le.challenge.get receives the wrong number of arguments."
       + " You must define getChallenge as function (opts, domain, key, cb) { }");
   }