From a7941ce0e24f0e7d057c1af9e9817858802e7dff Mon Sep 17 00:00:00 2001
From: Vladimir Agafonkin <agafonkin@gmail.com>
Date: Wed, 18 Jul 2018 01:13:42 +0300
Subject: [PATCH] fix a bug when zooming in/out too much

---
 index.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/index.js b/index.js
index a51c561..0969610 100644
--- a/index.js
+++ b/index.js
@@ -51,7 +51,10 @@ function updateOrientations() {
     ctx.stroke();
 
     var features = map.queryRenderedFeatures({layers: ['road']});
-    if (features.length === 0) return;
+    if (features.length === 0) {
+        ctx.restore();
+        return;
+    }
 
     var ruler = cheapRuler(map.getCenter().lat);
     var bounds = map.getBounds();