first commit

frontend/node_modules/rc-menu/es/hooks/useMemoCallback.js

@@ -0,0 +1,18 @@
+import * as React from 'react';
+
+/**
+ * Cache callback function that always return same ref instead.
+ * This is used for context optimization.
+ */
+export default function useMemoCallback(func) {
+  var funRef = React.useRef(func);
+  funRef.current = func;
+  var callback = React.useCallback(function () {
+    var _funRef$current;
+    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+      args[_key] = arguments[_key];
+    }
+    return (_funRef$current = funRef.current) === null || _funRef$current === void 0 ? void 0 : _funRef$current.call.apply(_funRef$current, [funRef].concat(args));
+  }, []);
+  return func ? callback : undefined;
+}