From 9e4e6c824296508e834c3371383865dfe8767895 Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Fri, 1 Jul 2016 23:58:48 -0700
Subject: [PATCH] lru again.

---
 lib/bcoin/lru.js | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/lib/bcoin/lru.js b/lib/bcoin/lru.js
index 160b995b..80028525 100644
--- a/lib/bcoin/lru.js
+++ b/lib/bcoin/lru.js
@@ -139,9 +139,6 @@ LRU.prototype.reset = function reset() {
 LRU.prototype.set = function set(key, value) {
   var item;
 
-  if (value === undefined)
-    throw new Error('Cannot set value to undefined.');
-
   key = key + '';
 
   item = this.data[key];
@@ -196,7 +193,7 @@ LRU.prototype.get = function get(key) {
  */
 
 LRU.prototype.has = function get(key) {
-  return this.data[key] !== undefined;
+  return this.data[key] != null;
 };
 
 /**