From 5feac8e4d7fb4742eb8e22b7c52870cd17ada58e Mon Sep 17 00:00:00 2001
From: Tom Alexander <tom@fizz.buzz>
Date: Sat, 27 Jan 2024 18:57:01 -0500
Subject: [PATCH] Fix a missing key.

---
 src/shadow.tsx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/shadow.tsx b/src/shadow.tsx
index 6c82d55..02c68e6 100644
--- a/src/shadow.tsx
+++ b/src/shadow.tsx
@@ -24,7 +24,7 @@ function buildShadow(highlights: Highlight[], text: string): ReactNode[] {
     } else if (state == ShadowState.Highlight) {
       if (remaining_highlights.length > 0 && i == remaining_highlights[0].end) {
         // End the span
-        output.push(<span className="highlighted">{buffer}</span>);
+        output.push(<span key={i} className="highlighted">{buffer}</span>);
         buffer = chr;
         state = ShadowState.Text;
         remaining_highlights = remaining_highlights.slice(1);