Add missing types for `focusTimer`

79bbd4c8 · Robert Knight · 8d814a2c · 79bbd4c8
Commit 79bbd4c8 authored Apr 15, 2022 by Robert Knight
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MenuKeyboardNavigation.js src/sidebar/components/MenuKeyboardNavigation.js +2 -1

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--- a/src/sidebar/components/MenuKeyboardNavigation.js
+++ b/src/sidebar/components/MenuKeyboardNavigation.js
@@ -32,7 +32,8 @@ export default function MenuKeyboardNavigation({
  const menuRef = /** @type {{ current: HTMLDivElement }} */ (useRef());

  useEffect(() => {
-    let focusTimer = null;
+    /** @type {number|undefined} */
+    let focusTimer;
    if (visible) {
      focusTimer = setTimeout(() => {
        // The focus won't work without delaying rendering.