From 637c05cb5419375f63a5cf970ab6e8139b82ac57 Mon Sep 17 00:00:00 2001
From: Stewart Allen <sa@grid.space>
Date: Sun, 1 Aug 2021 12:42:50 -0400
Subject: [PATCH] fix null polys

---
 src/geo/polygons.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/geo/polygons.js b/src/geo/polygons.js
index 5f66b1c3..f53a3279 100644
--- a/src/geo/polygons.js
+++ b/src/geo/polygons.js
@@ -57,7 +57,7 @@
         return polys;
     }
 
-    function toClipper(polys) {
+    function toClipper(polys = []) {
         let out = [];
         for (let poly of polys) {
             poly.toClipper(out);