From 5b3d579f87dabcd0516d5891e768dc094c686433 Mon Sep 17 00:00:00 2001
From: orangemug <info@orangemug.co.uk>
Date: Wed, 29 Jan 2020 08:44:27 +0000
Subject: [PATCH] Fix to fallback to index for unique feature key in
 <FeaturePropertyPopup />

---
 src/components/map/FeaturePropertyPopup.jsx | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/components/map/FeaturePropertyPopup.jsx b/src/components/map/FeaturePropertyPopup.jsx
index 71b99830..8b7816ae 100644
--- a/src/components/map/FeaturePropertyPopup.jsx
+++ b/src/components/map/FeaturePropertyPopup.jsx
@@ -21,8 +21,9 @@ function renderProperties(feature) {
   })
 }
 
-function renderFeature(feature) {
-  return <div key={`${feature.sourceLayer}-${feature.id}`}>
+function renderFeature(feature, idx) {
+  const uniqueKey = feature.hasOwnProperty('id') ? feature.id : idx;
+  return <div key={`${feature.sourceLayer}-${uniqueKey}`}>
     <div className="maputnik-popup-layer-id">{feature.layer['source-layer']}{feature.inspectModeCounter && <span> × {feature.inspectModeCounter}</span>}</div>
     <InputBlock key={"property-type"} label={"$type"}>
       <StringInput value={feature.geometry.type} style={{backgroundColor: 'transparent'}} />