add all frontend files

node_modules/rc-picker/es/PickerInput/hooks/usePickerRef.js

@@ -0,0 +1,19 @@
+import * as React from 'react';
+export default function usePickerRef(ref) {
+  var selectorRef = React.useRef();
+  React.useImperativeHandle(ref, function () {
+    var _selectorRef$current;
+    return {
+      nativeElement: (_selectorRef$current = selectorRef.current) === null || _selectorRef$current === void 0 ? void 0 : _selectorRef$current.nativeElement,
+      focus: function focus(options) {
+        var _selectorRef$current2;
+        (_selectorRef$current2 = selectorRef.current) === null || _selectorRef$current2 === void 0 || _selectorRef$current2.focus(options);
+      },
+      blur: function blur() {
+        var _selectorRef$current3;
+        (_selectorRef$current3 = selectorRef.current) === null || _selectorRef$current3 === void 0 || _selectorRef$current3.blur();
+      }
+    };
+  });
+  return selectorRef;
+}