From a0c6e3102b656f981c0d6cf2c833f3fbf5570834 Mon Sep 17 00:00:00 2001
From: bkmartinjr <bruce@chanzuckerberg.com>
Date: Wed, 30 May 2018 09:03:03 -0700
Subject: [PATCH] fix bug in fillBySelection

---
 src/util/typedCrossfilter/bitArray.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/util/typedCrossfilter/bitArray.js b/src/util/typedCrossfilter/bitArray.js
index dd7c1eb3..49258aca 100644
--- a/src/util/typedCrossfilter/bitArray.js
+++ b/src/util/typedCrossfilter/bitArray.js
@@ -214,7 +214,8 @@ class BitArray {
       const bitmask = this.bitmask[0];
       const bitarray = this.bitarray;
       for (let i = 0, len = this.length; i < len; i++) {
-        result[i] = bitarray[i] === bitmask ? selectedValue : deselectedValue;
+        result[i] =
+          bitmask && bitarray[i] === bitmask ? selectedValue : deselectedValue;
       }
     } else {
       for (let i = 0, len = this.length; i < len; i++) {