1 files changed, 5 insertions, 1 deletions
diff --git a/packages/integrations/lit/server.js b/packages/integrations/lit/server.js
index da571466f..aa91d1ea8 100644
--- a/packages/integrations/lit/server.js
+++ b/packages/integrations/lit/server.js
@@ -62,7 +62,11 @@ function* render(Component, attrs, slots) {
 	yield `>`;
 	const shadowContents = instance.renderShadow({});
 	if (shadowContents !== undefined) {
-		yield '<template shadowroot="open" shadowrootmode="open">';
+		const { mode = 'open', delegatesFocus } = instance.shadowRootOptions ?? {};
+    // `delegatesFocus` is intentionally allowed to coerce to boolean to
+    // match web platform behavior.
+    const delegatesfocusAttr = delegatesFocus ? ' shadowrootdelegatesfocus' : '';
+		yield `<template shadowroot="${mode}" shadowrootmode="${mode}"${delegatesfocusAttr}>`;
 		yield* shadowContents;
 		yield '</template>';
 	}