feat: 当children为空数组是认为是叶子节点 (#143)

* feat: 当children为空数组是认为是叶子节点

examples/docs/resources/pc/demo/cascader/basic-usage.vue

@@ -17,6 +17,11 @@ export default {
           value: 'zhinan',
           label: '指南',
           children: [
+            {
+              value: 'quick-started',
+              label: '快速开始',
+              children: []
+            },
             {
               value: 'anzhuang',
               label: '安装',

packages/renderless/src/cascader-panel/node.ts

@@ -45,7 +45,7 @@ export default class Node {
     const childrenKey = config.children
     const childrenData = this.data[childrenKey]
 
-    this.hasChildren = Array.isArray(childrenData)
+    this.hasChildren = Array.isArray(childrenData) && childrenData.length > 0
     this.children = (childrenData || []).map((child) => new Node(child, config, this))
   }