From 9cbf6217d7339b11205f1d6b3838b2ac96e47b44 Mon Sep 17 00:00:00 2001
From: Eduard Popov <edpop@users.noreply.github.com>
Date: Thu, 8 Sep 2016 12:26:27 +1000
Subject: [PATCH] Fix way disappearing due to invalid "layer" tag

Hello.

Now layer() returns only a finite number, not NaN.

/* Chrome 53 */
---
 modules/core/way.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/core/way.js b/modules/core/way.js
index 91f50670a..28458b207 100644
--- a/modules/core/way.js
+++ b/modules/core/way.js
@@ -68,7 +68,7 @@ _.extend(Way.prototype, {
 
     layer: function() {
         // explicit layer tag, clamp between -10, 10..
-        if (this.tags.layer !== undefined) {
+        if (isFinite(this.tags.layer)) {
             return Math.max(-10, Math.min(+(this.tags.layer), 10));
         }