From 46666247b2a2c65204f1f7ee1cbac3ac5811edde Mon Sep 17 00:00:00 2001
From: Kevin Nowaczyk <beakerboy99@yahoo.com>
Date: Wed, 17 Jul 2024 07:56:49 -0400
Subject: [PATCH] Update buildingpart.js

---
 src/buildingpart.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/buildingpart.js b/src/buildingpart.js
index 098081f..e61a4f1 100644
--- a/src/buildingpart.js
+++ b/src/buildingpart.js
@@ -416,7 +416,11 @@ class BuildingPart {
    */
   static cardinalToDegree(cardinal) {
     const cardinalUpperCase = `${cardinal}`.toUpperCase();
-    let degreesTimesTwo = 'N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW'.split(' ').indexOf(cardinalUpperCase) * 45;
+    const index = 'N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW'.split(' ').indexOf(cardinalUpperCase);
+    if (index === -1) {
+      return undefined;
+    }
+    const degreesTimesTwo = index * 45;
     // integer floor
     return degreesTimesTwo % 2 === 0 ? degreesTimesTwo / 2 : (degreesTimesTwo - 1) / 2;
   }