From a6afb46808a3caa7424c09687d80ed658015c995 Mon Sep 17 00:00:00 2001
From: Chris Thoburn <runspired@gmail.com>
Date: Wed, 3 Feb 2016 09:28:01 -0600
Subject: [PATCH] fix(geography): don't cycle if we don't have any components

---
 addon/mixins/occlusion-collection.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/addon/mixins/occlusion-collection.js b/addon/mixins/occlusion-collection.js
index c2be287..cf7c444 100644
--- a/addon/mixins/occlusion-collection.js
+++ b/addon/mixins/occlusion-collection.js
@@ -464,6 +464,10 @@ export default Mixin.create({
     const edges = this.get('_edges');
     const childComponents = this.get('children');
 
+    if (!get(childComponents, 'length')) {
+      return;
+    }
+
     if (this._isFirstRender) {
       if (this.get('renderAllInitially')) {
         childComponents.forEach((i) => {