From 51d61dda277fff18359a7f04be8f32cefb099d13 Mon Sep 17 00:00:00 2001
From: "James P. Javery" <james.javery@gmail.com>
Date: Tue, 2 Feb 2021 04:22:44 -0600
Subject: [PATCH] Fix argument mutation and incorrect result when attempting to
 reuse PathOverlay coordinates in getStaticImage config (#413)

Array.prototype.reverse() reverses an array in place. This results in the (unintended) mutation of the coordinates property of the overlay param. Instead, create a new array and initialize it with the reversed lat and long.

 https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reverse
---
 services/static.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/services/static.js b/services/static.js
index bb4c382..c3773df 100644
--- a/services/static.js
+++ b/services/static.js
@@ -431,7 +431,7 @@ function encodePathOverlay(o) {
   }
   // polyline expects each coordinate to be in reversed order: [lat, lng]
   var reversedCoordinates = o.coordinates.map(function(c) {
-    return c.reverse();
+    return [c[1], c[0]];
   });
   var encodedPolyline = polyline.encode(reversedCoordinates);
   result += '(' + encodeURIComponent(encodedPolyline) + ')';