From 636492c66b58b3e4403755185e4371bf59d5fbdd Mon Sep 17 00:00:00 2001
From: Garrett Johnson <garrett.kjohnson@gmail.com>
Date: Sun, 5 Sep 2021 20:45:00 -0700
Subject: [PATCH] Update TilesRendererBase.js

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

diff --git a/src/base/TilesRendererBase.js b/src/base/TilesRendererBase.js
index 473f8d5c0..0884422cb 100644
--- a/src/base/TilesRendererBase.js
+++ b/src/base/TilesRendererBase.js
@@ -221,7 +221,7 @@ export class TilesRendererBase {
 
 			// "content" should only indicate loadable meshes, not external tile sets
 			const extension = getUrlExtension( tile.content.uri );
-			const isExternalTileSet = extension && extension.toLowerCase() === 'json';
+			const isExternalTileSet = Boolean( extension && extension.toLowerCase() === 'json' );
 			tile.__externalTileSet = isExternalTileSet;
 			tile.__contentEmpty = isExternalTileSet;