chore: revert 7db014e

Author: anlyyao

src/checkbox/CheckboxGroup.tsx

@@ -51,7 +51,7 @@ const CheckboxGroup: FC<CheckboxGroupProps> = (props) => {
     Array.isArray(options) && options.length > 0
       ? options
       : React.Children.map(children, (child) => (child as ReactElement).props);
-  const optionsWithoutCheckAll = internalOptions.filter((t) => typeof t !== 'object' || !t.checkAll);
+  const optionsWithoutCheckAll = internalOptions.filter((t: CheckboxOption) => typeof t !== 'object' || !t.checkAll);
   const optionsWithoutCheckAllValues = [];
   optionsWithoutCheckAll.forEach((v) => {
     const vs = getCheckboxValue(v);

src/dropdown-menu/DropdownItem.tsx

@@ -67,8 +67,8 @@ const DropdownItem: React.FC<DropdownItemProps> = (props) => {
 
   const isActived = id === activedId;
 
-  const menuItemRef = useRef<HTMLDivElement>();
-  const itemRef = useRef<HTMLDivElement>();
+  const menuItemRef = useRef<HTMLDivElement>(null);
+  const itemRef = useRef<HTMLDivElement>(null);
 
   const getDropdownItemStyle = () => {
     const ele = menuItemRef.current;