main.js: handle document.activeElement being null

this is technically possible if someone sticks rustdoc in an iframe, i think?
2025-03-10 13:54:02 -05:00
parent f5efd2aba3
commit ab180c29e3
1 changed files with 2 additions and 2 deletions
--- a/src/librustdoc/html/static/js/main.js
+++ b/src/librustdoc/html/static/js/main.js
@@ -538,8 +538,8 @@ function preLoadCss(cssUrl) {
            return;
        }

-        // @ts-expect-error
-        if (document.activeElement.tagName === "INPUT" &&
+        if (document.activeElement &&
+            document.activeElement.tagName === "INPUT" &&
            // @ts-expect-error
            document.activeElement.type !== "checkbox" &&
            // @ts-expect-error