cleaner default-param-setting

src/Picker.tsx

@@ -8,12 +8,13 @@ type PickerInput = {
   $url:Atom<string>, 
   $isEnabled?:Atom<boolean>
 };
-export function Picker({ $options, $isLoading, $url, $isEnabled, $selectedOption }: PickerInput){
-  $options = $options || useMemo(()=>$([]),[]);
-  $isLoading = $isLoading || useMemo(()=>$(true),[]);
-  $isEnabled = $isEnabled || useMemo(()=>$(true),[]);
-  $selectedOption = $selectedOption || useMemo(()=>$(''),[]);
-  
+export function Picker({ 
+    $url, 
+    $options        = useMemo(()=>$([]),  []), 
+    $isLoading      = useMemo(()=>$(true),[]), 
+    $isEnabled      = useMemo(()=>$(true),[]), 
+    $selectedOption = useMemo(()=>$(''),  [])
+  }: PickerInput){
   const url = useAtomValue($url);
   const options = useAtomValue($options);
   const isLoading = useAtomValue($isLoading);