From 84a5ba97079027f9da188ba6d63e024c027e6a7c Mon Sep 17 00:00:00 2001
From: Travis Cross <tc@traviscross.com>
Date: Sun, 11 May 2025 09:23:41 +0000
Subject: [PATCH] Handle `DOWN_KEYCODE` with no results

If, when searching, one pressed the down arrow key when there were no
results, this caused an uncaught exception and defocused the search
box.

Let's prevent this and keep the search box focused when pressing down
in this state by checking first whether there is a result for us to
focus instead.
---
 src/front-end/searcher/searcher.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/front-end/searcher/searcher.js b/src/front-end/searcher/searcher.js
index a29883c0..d7f9f580 100644
--- a/src/front-end/searcher/searcher.js
+++ b/src/front-end/searcher/searcher.js
@@ -369,8 +369,11 @@ window.search = window.search || {};
             searchbar.select();
         } else if (hasFocus() && e.keyCode === DOWN_KEYCODE) {
             e.preventDefault();
-            unfocusSearchbar();
-            searchresults.firstElementChild.classList.add('focus');
+            const first = searchresults.firstElementChild;
+            if (first !== null) {
+                unfocusSearchbar();
+                first.classList.add('focus');
+            }
         } else if (!hasFocus() && (e.keyCode === DOWN_KEYCODE
                                 || e.keyCode === UP_KEYCODE
                                 || e.keyCode === SELECT_KEYCODE)) {