<template>
 <div
  @click.stop="handleClick"
  v-show="node.visible">
  <div class="chu-tree-node__content"
   :style="{ 'padding-left': (node.level - 1) * tree.indent + 'px' }">
   <span :class="arrowClasses" @click.stop="handleExpandIconClick">
     <Icon v-if="!node.isLeaf" type="arrow-right-b"></Icon>
   </span>
   <Checkbox
    v-if="showCheckbox"
    :value="node.checked"
    :indeterminate="node.indeterminate"
    :disabled="!!node.disabled"
    @click.native.stop
    @on-change="handleCheckChange"></Checkbox>
   <span
    v-if="node.loading"
    class="ivu-load-loop">
   </span>
   <node-content :node="node"></node-content>
  </div>
  <collapse-transition>
   <div
    v-show="expanded">
    <el-tree-node
     :render-content="renderContent"
     v-for="child in node.childNodes"
     :key="getNodeKey(child)"
     :node="child"
     @node-expand="handleChildNodeExpand">
    </el-tree-node>
   </div>
  </collapse-transition>
 </div>
</template>

handleCheckChange(ev) {
    this.node.setChecked(ev, !this.tree.checkStrictly);
   },

npm i chu-tree-iview

import chuView from 'chu-tree-iview'

Vue.use(chuView)

<chu-tree></chu-tree>