Tree: fix markNodeData error when data is falsy

Leopoldthecoder · Leopoldthecoder · commit d035cea5c5f7 · 2018-05-28T16:50:53.000+08:00
diff --git a/packages/tree/src/model/util.js b/packages/tree/src/model/util.js
@@ -1,7 +1,7 @@
 export const NODE_KEY = '$treeNodeId';
 
 export const markNodeData = function(node, data) {
-  if (data[NODE_KEY]) return;
+  if (!data || data[NODE_KEY]) return;
   Object.defineProperty(data, NODE_KEY, {
     value: node.id,
     enumerable: false,
