From 5ce57d08034beed7f0d3052f5a1f9828edc65795 Mon Sep 17 00:00:00 2001
From: orangemug <info@orangemug.co.uk>
Date: Thu, 1 Feb 2018 21:33:07 +0000
Subject: [PATCH 1/2] Added guard in fetchSources.

This will mean that autocomplete is broken for sources without vector_layers key present.
---
 src/components/App.jsx | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/components/App.jsx b/src/components/App.jsx
index c76bf70..4eca4c3 100644
--- a/src/components/App.jsx
+++ b/src/components/App.jsx
@@ -202,7 +202,7 @@ export default class App extends React.Component {
         layers: []
       };
 
-      if(!this.state.sources.hasOwnProperty(key) && val.type === "vector") {
+      if(!this.state.sources.hasOwnProperty(key) && val.type === "vector" && val.hasOwnProperty("url")) {
         let url = val.url;
         try {
           url = mapboxUtil.normalizeSourceURL(url, MapboxGl.accessToken);
@@ -215,6 +215,10 @@ export default class App extends React.Component {
             return response.json();
           })
           .then((json) => {
+            if(!json.hasOwnProperty("vector_layers")) {
+              return;
+            }
+
             // Create new objects before setState
             const sources = Object.assign({}, this.state.sources);
 

From 7d5927bbc84ecf8a051897bca36933e8b8769e0c Mon Sep 17 00:00:00 2001
From: orangemug <info@orangemug.co.uk>
Date: Thu, 1 Feb 2018 22:00:26 +0000
Subject: [PATCH 2/2] Added additional guard

As checking the key name is 'openmaptiles' isn't a guarantee
---
 src/libs/style.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libs/style.js b/src/libs/style.js
index cf2cff6..4441912 100644
--- a/src/libs/style.js
+++ b/src/libs/style.js
@@ -57,6 +57,7 @@ function indexOfLayer(layers, layerId) {
 function replaceAccessToken(mapStyle) {
   const omtSource = mapStyle.sources.openmaptiles
   if(!omtSource) return mapStyle
+  if(!omtSource.hasOwnProperty("url")) return mapStyle
 
   const metadata = mapStyle.metadata || {}
   const accessToken = metadata['maputnik:openmaptiles_access_token'] || tokens.openmaptiles