Tree: fix insertChild (#21194)

4d7d24b2 · 好多大米 · GitHub · 49438673 · 4d7d24b2
Commit 4d7d24b2 authored Aug 02, 2021 by 好多大米 Committed by GitHub Aug 02, 2021
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packages/tree/src/model/node.js packages/tree/src/model/node.js +1 -1

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--- a/packages/tree/src/model/node.js
+++ b/packages/tree/src/model/node.js
@@ -220,7 +220,7 @@ export default class Node {
    if (!(child instanceof Node)) {
      if (!batch) {
-        const children = this.getChildren(true);
+        const children = this.getChildren(true) || [];
        if (children.indexOf(child.data) === -1) {
          if (typeof index === 'undefined' || index < 0) {
            children.push(child.data);