remove setKey

Author: chenxsan

packages/docsearch-react/src/DocSearch.tsx

@@ -16,7 +16,7 @@ import {
 } from './types';
 import { useDocSearchKeyboardEvents } from './useDocSearchKeyboardEvents';
 
-const { useState, useEffect, useCallback, useRef } = React;
+const { useState, useCallback, useRef } = React;
 
 const ACTION_KEY_APPLE = '⌘' as const;
 const ACTION_KEY_DEFAULT = 'Ctrl' as const;
@@ -52,15 +52,14 @@ export function DocSearch(props: DocSearchProps) {
     undefined
   );
 
-  const [key, setKey] = useState<
+  const [key] = useState<
     typeof ACTION_KEY_APPLE | typeof ACTION_KEY_DEFAULT | null
-  >(null);
-
-  useEffect(() => {
+  >(() => {
     if (typeof navigator !== 'undefined') {
-      setKey(isAppleDevice() ? ACTION_KEY_APPLE : ACTION_KEY_DEFAULT);
+      return isAppleDevice() ? ACTION_KEY_APPLE : ACTION_KEY_DEFAULT;
     }
-  }, []);
+    return null;
+  });
 
   const onOpen = useCallback(() => {
     setIsOpen(true);
@@ -98,7 +97,6 @@ export function DocSearch(props: DocSearchProps) {
           </span>
         ) : undefined}
       </DocSearchButton>
-
       {isOpen &&
         createPortal(
           <DocSearchModal