From 2f0d20bbc81e2599db9360ebc7261a27214c2434 Mon Sep 17 00:00:00 2001
From: Jordan Eldredge <jordan@jordaneldredge.com>
Date: Sat, 28 Jul 2018 15:09:15 -0700
Subject: [PATCH] Add logging to catch error

Some users are seeing empty moving sets. Why?
---
 js/components/WindowManager.js | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/js/components/WindowManager.js b/js/components/WindowManager.js
index 4ea4fa40..c2f9330f 100644
--- a/js/components/WindowManager.js
+++ b/js/components/WindowManager.js
@@ -132,7 +132,17 @@ class WindowManager extends React.Component {
       )
     };
 
-    const box = boundingBox(moving);
+    let box;
+    try {
+      box = boundingBox(moving);
+    } catch (err) {
+      console.error(
+        `Could not construct bounding box for key: ${key}. moving.length is: ${
+          moving.length
+        }`
+      );
+      throw err;
+    }
 
     const handleMouseMove = ee => {
       const proposedDiff = {