From 618271791cbce7324ff24115d9ea5770efb3f9b3 Mon Sep 17 00:00:00 2001
From: "Mr.doob" <info@mrdoob.com>
Date: Thu, 21 Jan 2021 17:20:42 +0000
Subject: [PATCH] Three.js: Log a warning when importing multiple instances of
 the library.

---
 src/Three.js | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/Three.js b/src/Three.js
index 793db5abd57586..9606bcd67bcfdf 100644
--- a/src/Three.js
+++ b/src/Three.js
@@ -164,3 +164,14 @@ if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {
 	/* eslint-enable no-undef */
 
 }
+
+if ( typeof __THREE__ !== undefined ) {
+
+	console.warn( 'WARNING: Multiple instances of Three.js being imported.' );
+
+} else {
+
+	// eslint-disable-next-line no-undef
+	__THREE__ = REVISION;
+
+}