无设备处理

src/components/tree/govern/deviceTree.vue

@@ -51,12 +51,16 @@ getDeviceTree().then(res => {
     })
     tree.value = res.data
     nextTick(() => {
-        treRef.value.treeRef.setCurrentKey(arr[0].id)
-        // 注册父组件事件
-        emit('init', {
-            level: 2,
-            ...arr[0]
-        })
+        if (arr.length) {
+            treRef.value.treeRef.setCurrentKey(arr[0].id)
+            // 注册父组件事件
+            emit('init', {
+                level: 2,
+                ...arr[0]
+            })
+        } else {
+            emit('init')
+        }
     })
 })
 const handleCheckChange = (data: any, checked: any, indeterminate: any) => {