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feat: 支持传入空数组

zhangweicheng 5 years ago
parent
7b3546615a
commit
77028bda5f
1 changed files with 1 additions and 1 deletions
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  1. 1 1
      tree/src/index.ts

+ 1 - 1
tree/src/index.ts
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@@ -96,7 +96,7 @@ export class Tree {
 
 
   // 获取顶层原始数据
 
   getRoots(): TreeNode[] {
 
-    return this.parentMap[this.rootID];
 
+    return this.parentMap[this.rootID] || [];
 
   }
 
 
   // 生成按照树结构排好序的数据