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] 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