add all frontend files

node_modules/rc-tree-select/lib/hooks/useRefFunc.js

@@ -0,0 +1,20 @@
+"use strict";
+
+var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard").default;
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = useRefFunc;
+var React = _interopRequireWildcard(require("react"));
+/**
+ * Same as `React.useCallback` but always return a memoized function
+ * but redirect to real function.
+ */
+function useRefFunc(callback) {
+  var funcRef = React.useRef();
+  funcRef.current = callback;
+  var cacheFn = React.useCallback(function () {
+    return funcRef.current.apply(funcRef, arguments);
+  }, []);
+  return cacheFn;
+}