From a71946a7b5c073f1177479b0500be89c72270652 Mon Sep 17 00:00:00 2001
From: Andreas Hocevar <andreas.hocevar@gmail.com>
Date: Mon, 28 Aug 2017 19:05:36 +0200
Subject: [PATCH] Add missing extern

No idea why the compiler did not complain about this previously.
---
 externs/topojson.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/externs/topojson.js b/externs/topojson.js
index 3a606509a9..111f966ad7 100644
--- a/externs/topojson.js
+++ b/externs/topojson.js
@@ -75,6 +75,11 @@ TopoJSONGeometry.prototype.type;
 TopoJSONGeometry.prototype.id;
 
 
+/**
+ * @type {Object.<string, *>|undefined}
+ */
+TopoJSONGeometry.prototype.properties;
+
 
 /**
  * @constructor