add all frontend files

node_modules/rc-menu/es/Divider.js

@@ -0,0 +1,19 @@
+import * as React from 'react';
+import classNames from 'classnames';
+import { MenuContext } from "./context/MenuContext";
+import { useMeasure } from "./context/PathContext";
+export default function Divider(_ref) {
+  var className = _ref.className,
+    style = _ref.style;
+  var _React$useContext = React.useContext(MenuContext),
+    prefixCls = _React$useContext.prefixCls;
+  var measure = useMeasure();
+  if (measure) {
+    return null;
+  }
+  return /*#__PURE__*/React.createElement("li", {
+    role: "separator",
+    className: classNames("".concat(prefixCls, "-item-divider"), className),
+    style: style
+  });
+}