代码优化：将render类的setCopyDataToClipboard方法提取为工具方法

simple-mind-map/src/core/render/Render.js

@@ -21,7 +21,8 @@ import {
   getNodeIndex,
   createUid,
   getNodeDataIndex,
-  getNodeIndexInNodeList
+  getNodeIndexInNodeList,
+  setDataToClipboard
 } from '../../utils'
 import { shapeList } from './node/Shape'
 import { lineStyleProps } from '../../themes/default'
@@ -774,29 +775,23 @@ class Render {
   // 复制节点
   copy() {
     this.beingCopyData = this.copyNode()
-    this.setCopyDataToClipboard(this.beingCopyData)
+    setDataToClipboard({
+      simpleMindMap: true,
+      data: this.beingCopyData
+    })
   }
 
   // 剪切节点
   cut() {
     this.mindMap.execCommand('CUT_NODE', copyData => {
       this.beingCopyData = copyData
-      this.setCopyDataToClipboard(copyData)
+      setDataToClipboard({
+        simpleMindMap: true,
+        data: copyData
+      })
     })
   }
 
-  // 将粘贴或剪切的数据设置到用户剪切板中
-  setCopyDataToClipboard(data) {
-    if (navigator.clipboard) {
-      navigator.clipboard.writeText(
-        JSON.stringify({
-          simpleMindMap: true,
-          data
-        })
-      )
-    }
-  }
-
   // 粘贴节点
   paste() {
     if (this.beingCopyData) {
@@ -1334,11 +1329,7 @@ class Render {
 
   //  切换节点展开状态
   toggleNodeExpand(node) {
-    this.mindMap.execCommand(
+    this.mindMap.execCommand('SET_NODE_EXPAND', node, !node.getData('expand'))
-      'SET_NODE_EXPAND',
-      node,
-      !node.getData('expand')
-    )
   }
 
   //  设置节点文本

simple-mind-map/src/utils/index.js

@@ -891,3 +891,10 @@ export const isSameObject = (a, b) => {
     return a === b
   }
 }
+
+// 将数据设置到用户剪切板中
+export const setDataToClipboard = data => {
+  if (navigator.clipboard) {
+    navigator.clipboard.writeText(JSON.stringify(data))
+  }
+}