From 082938c88aeac41b6a10830560ae8c6bdfc0760b Mon Sep 17 00:00:00 2001
From: Karl Obermiller <karl.obermiller@biosensics.com>
Date: Fri, 12 Jun 2020 10:42:05 -0400
Subject: [PATCH] Check if `where` is undefined in queryFilter()

---
 src/parse-mockdb.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/parse-mockdb.js b/src/parse-mockdb.js
index 1b87fab..f26a57a 100644
--- a/src/parse-mockdb.js
+++ b/src/parse-mockdb.js
@@ -443,7 +443,7 @@ function evaluateObject(object, whereParams, key) {
  * Returns a function that filters query matches on a where clause
  */
 function queryFilter(where) {
-  if (where.$or) {
+  if (where && where.$or) {
     return object =>
       _.reduce(where.$or, (result, subclause) => result ||
         queryFilter(subclause)(object), false);