From a5ac1cc93d1e9e7482f93c8bc95f2305fcb577cc Mon Sep 17 00:00:00 2001
From: orangemug <info@orangemug.co.uk>
Date: Sun, 16 Feb 2020 18:22:21 +0000
Subject: [PATCH] Guard against errors producing dirty map state.

---
 src/components/App.jsx | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/components/App.jsx b/src/components/App.jsx
index aacfec30..dc870b95 100644
--- a/src/components/App.jsx
+++ b/src/components/App.jsx
@@ -354,8 +354,15 @@ export default class App extends React.Component {
 
       errors.forEach(error => {
         const {message} = error;
-        const objPath = message.split(":")[0];
-        unset(dirtyMapStyle, objPath);
+        if (message) {
+          try {
+            const objPath = message.split(":")[0];
+            unset(dirtyMapStyle, objPath);
+          }
+          catch (err) {
+            console.warn(err);
+          }
+        }
       });
     }
 
@@ -475,7 +482,6 @@ export default class App extends React.Component {
   }
 
   onLayerChanged = (layer) => {
-    console.log("test: onLayerChanged", layer);
     const changedLayers = this.state.mapStyle.layers.slice(0)
     const idx = style.indexOfLayer(changedLayers, layer.id)
     changedLayers[idx] = layer