From 5ca56b68734ad1e6411721259dfb1da4cc25ff9a Mon Sep 17 00:00:00 2001
From: Bryan Housel <bryan@mapbox.com>
Date: Wed, 7 Feb 2018 01:16:14 -0500
Subject: [PATCH] Handle situation where nodes have no `loc` (like in tests)

---
 modules/osm/intersection.js | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/modules/osm/intersection.js b/modules/osm/intersection.js
index 7f918a815..bb89efea3 100644
--- a/modules/osm/intersection.js
+++ b/modules/osm/intersection.js
@@ -345,9 +345,11 @@ export function osmIntersection(graph, startVertexId) {
             n2 = vgraph.entity(way.nodes[0]);
         }
 
-        var toLoc = geoVecInterp(n1.loc, n2.loc, 10);  // extend 1000%
-        n2 = n2.move(toLoc);
-        vgraph = vgraph.replace(n2);
+        if (n1.loc && n2.loc) {
+            var toLoc = geoVecInterp(n1.loc, n2.loc, 10);  // extend 1000%
+            n2 = n2.move(toLoc);
+            vgraph = vgraph.replace(n2);
+        }
     });