add all frontend files

node_modules/rc-dropdown/es/Overlay.js

@@ -0,0 +1,23 @@
+import { composeRef, getNodeRef, supportRef } from "rc-util/es/ref";
+import React, { forwardRef, useMemo } from 'react';
+var Overlay = /*#__PURE__*/forwardRef(function (props, ref) {
+  var overlay = props.overlay,
+    arrow = props.arrow,
+    prefixCls = props.prefixCls;
+  var overlayNode = useMemo(function () {
+    var overlayElement;
+    if (typeof overlay === 'function') {
+      overlayElement = overlay();
+    } else {
+      overlayElement = overlay;
+    }
+    return overlayElement;
+  }, [overlay]);
+  var composedRef = composeRef(ref, getNodeRef(overlayNode));
+  return /*#__PURE__*/React.createElement(React.Fragment, null, arrow && /*#__PURE__*/React.createElement("div", {
+    className: "".concat(prefixCls, "-arrow")
+  }), /*#__PURE__*/React.cloneElement(overlayNode, {
+    ref: supportRef(overlayNode) ? composedRef : undefined
+  }));
+});
+export default Overlay;