From f37380969a5813b85448974ade5736de54586575 Mon Sep 17 00:00:00 2001
From: "Evan W. Patton" <ewpatton@mit.edu>
Date: Tue, 13 Jun 2023 12:30:45 -0400
Subject: [PATCH] fix: Allow for unattached elements during inject call (#7149)

Change-Id: I616cb30b8a3292b3be9f58536d7bfb9444e529d4
---
 core/inject.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/core/inject.ts b/core/inject.ts
index 52336eefa..be9891e4c 100644
--- a/core/inject.ts
+++ b/core/inject.ts
@@ -46,7 +46,10 @@ export function inject(
     containerElement = container;
   }
   // Verify that the container is in document.
-  if (!document.contains(containerElement)) {
+  if (
+    !document.contains(containerElement) &&
+    document !== containerElement?.ownerDocument
+  ) {
     throw Error('Error: container is not in current document');
   }
   const options = new Options(opt_options || ({} as BlocklyOptions));