From 9d42d470caf61f599a1bdff372c7bd79b47163ef Mon Sep 17 00:00:00 2001
From: Bryan Housel <bryan@mapbox.com>
Date: Fri, 15 Dec 2017 21:26:58 -0500
Subject: [PATCH] Touch targets can be keyed on entity.id instead of
 osmEntity.key to avoid excessive exit/enter flickering

---
 modules/svg/vertices.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/svg/vertices.js b/modules/svg/vertices.js
index f494e5328..d80302a0b 100644
--- a/modules/svg/vertices.js
+++ b/modules/svg/vertices.js
@@ -174,7 +174,7 @@ export function svgVertices(projection, context) {
         var debugClass = 'pink';
         var targets = selection.selectAll('.target')
             .filter(filter)
-            .data(entities, osmEntity.key);
+            .data(entities, function key(d) { return d.id; });
 
         // exit
         targets.exit()