From 070cc2e7c2f739fcd4b76e945c5daa866b6f44e1 Mon Sep 17 00:00:00 2001
From: ELF <360197197@qq.com>
Date: Thu, 7 Nov 2019 17:56:33 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=94=B9bug?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../Base/Service/PromoteService.class.php     |    22 +-
 .../Controller/PromoteController.class.php    |     4 +-
 .../Home/View/default/Promote/children.html   |   119 +-
 .../Home/View/default/Public/transfer.html    |    48 +
 Public/Home/css/transfer.css                  |   128 +
 Public/Home/js/transfer.js                    |   217 +
 Public/static/vue.js                          | 11944 ++++++++++++++++
 7 files changed, 12447 insertions(+), 35 deletions(-)
 create mode 100644 Application/Home/View/default/Public/transfer.html
 create mode 100644 Public/Home/css/transfer.css
 create mode 100644 Public/Home/js/transfer.js
 create mode 100644 Public/static/vue.js

diff --git a/Application/Base/Service/PromoteService.class.php b/Application/Base/Service/PromoteService.class.php
index eccf2aac5..a5874251a 100644
--- a/Application/Base/Service/PromoteService.class.php
+++ b/Application/Base/Service/PromoteService.class.php
@@ -92,7 +92,7 @@ class PromoteService {
         $balanceCoinMode = isset($params['balance_coin_mode']) ? $params['balance_coin_mode'] : 0;
         $type = isset($params['type']) ? $params['type'] : 0;
         $shiftIds = isset($params['shift_ids']) && $params['shift_ids'] ? $params['shift_ids'] : [];
-        $create_promote_id = empty(session('promote_auth.pid')) ? 0 : session('promote_auth.pid');
+        $createPromoteId = empty(session('promote_auth.pid')) ? 0 : session('promote_auth.pid');
 
         if ($fromPromoteId == $toPromoteId) {
             return [
@@ -106,6 +106,7 @@ class PromoteService {
                 'msg'=>'订单日期不能为空'
             ];
         }
+
         if ($type == 1 && $balanceCoinMode == 0) {
             return [
                 'status' => false, 
@@ -113,6 +114,21 @@ class PromoteService {
             ];
         }
 
+        if (count($shiftIds) > 15) {
+            return [
+                'status' => false, 
+                'msg'=>'部分迁移时，迁移人数不能超过15'
+            ];
+        }
+
+        $shiftTask = M('shift_task', 'sys_')->field(['id'])->where(['type' => $type, 'status' => 0, 'from_promote_id'])->find();
+        if ($shiftTask) {
+            return [
+                'status' => false, 
+                'msg' => '含有类似未执行迁移任务，请稍后再试'
+            ];
+        }
+
         $isFuture = false;
         if (strtotime($orderTime) > strtotime(date('Y-m-d 23:59:59'))) {
             $isFuture = true;
@@ -124,13 +140,13 @@ class PromoteService {
             'order_time' => strtotime($orderTime),
             'balance_coin_mode' => $balanceCoinMode,
             'create_time' => time(),
-            'create_promote_id' => $create_promote_id,
+            'create_promote_id' => $createPromoteId,
             'status' => 0,
             'type' => $type,
             'shift_ids' => json_encode($shiftIds)
         ];
 
-        if (M('ShiftTask')->add($data)) {
+        if (M('shift_task', 'sys_')->add($data)) {
             return [
                 'status' => true, 
                 'msg'=>'迁移任务创建成功'
diff --git a/Application/Home/Controller/PromoteController.class.php b/Application/Home/Controller/PromoteController.class.php
index 159239644..a407002c1 100644
--- a/Application/Home/Controller/PromoteController.class.php
+++ b/Application/Home/Controller/PromoteController.class.php
@@ -874,8 +874,8 @@ class PromoteController extends BaseController
         if (count($ids) > 0) {
             $countList = M('promote', 'tab_')->field(['count(*)' => 'count', 'parent_id' => 'parent_id'])->where(['parent_id' => ['in', $ids]])->group('parent_id')->select();
             $playerList = M('user_play', 'tab_')->field(['count(*)' => 'count', 'promote_id' => 'promote_id'])->where(['promote_id' => ['in', $ids]])->group('promote_id')->select();
-            $shiftList = M('shift_task', 'sys_')->field(['count(*)' => 'count', 'from_promote_id' => 'from_promote_id'])->where(['status' => 0, 'type' => 1, 'promote_id' => ['in', $ids]])->group('from_promote_id')->select();
-            $shiftPlayerList = M('shift_task', 'sys_')->field(['count(*)' => 'count', 'from_promote_id' => 'from_promote_id'])->where(['status' => 0, 'type' => 2, 'promote_id' => ['in', $ids]])->group('from_promote_id')->select();
+            $shiftList = M('shift_task', 'sys_')->field(['count(*)' => 'count', 'from_promote_id' => 'from_promote_id'])->where(['status' => 0, 'type' => 1, 'from_promote_id' => ['in', $ids]])->group('from_promote_id')->select();
+            $shiftPlayerList = M('shift_task', 'sys_')->field(['count(*)' => 'count', 'from_promote_id' => 'from_promote_id'])->where(['status' => 0, 'type' => 2, 'from_promote_id' => ['in', $ids]])->group('from_promote_id')->select();
             $hasChildList = array_column($countList, 'parent_id');
             $hasPlayerList = array_column($playerList, 'promote_id');
             $hasShiftList = array_column($shiftList, 'from_promote_id');
diff --git a/Application/Home/View/default/Promote/children.html b/Application/Home/View/default/Promote/children.html
index 1c9da8225..3655f0055 100644
--- a/Application/Home/View/default/Promote/children.html
+++ b/Application/Home/View/default/Promote/children.html
@@ -1,6 +1,9 @@
 <extend name="Public/promote_base"/>
 <block name="css">
   <link href="__CSS__/20180207/account.css" rel="stylesheet" >
+  <link href="https://cdn.bootcss.com/twitter-bootstrap/4.3.1/css/bootstrap.min.css" rel="stylesheet">
+  <link rel="stylesheet" type="text/css" href="http://www.jq22.com/jquery/font-awesome.4.6.0.css">
+  <link href="__CSS__/transfer.css" rel="stylesheet" >
 </block>
 <block name="body">
   <div class="page-list normal_list promote-mychlid-list">
@@ -16,7 +19,7 @@
           <form action="{:U('Promote/children',array('row'=>I('get.row')))}" method="post" enctype="multipart/form-data">
             <input type="hidden" name="promote_type" value="{:I('promote_type', 0)}">
             <div class="form-group fl normal_space">
-              <a href="{:U('Promote/addPromote', ['promote_type' => I('promote_type', 0)])}" class="submit btn"><i class="add_qudao"></i><span>添加{$promoteTypeName}</span></a>
+              <a href="{:U('Promote/addPromote', ['promote_type' => I('promote_type', 0)])}" class="submit btn" style="line-height: 25px"><i class="add_qudao"></i><span>添加{$promoteTypeName}</span></a>
             </div>
             <div class="form-group fr">
               <input type="submit" class="submit normal_space" value="查询">
@@ -60,7 +63,7 @@
               <tr><td colspan="10" style="text-align: center;height: 45vh;"><img src="__IMG__/20180207/icon_wushujv2.png"/><p style="line-height: 40px;color: #A5A5A5;">暂无数据</p></td></tr>
               <else />
               <volist name="records" id="record" mod="2">
-                <tr data-id="{$record.id}" class="<eq name='mod' value='1'>odd</eq>">
+                <tr data-id="{$record.id}" data-parent-id="{$record.parent_id}" class="<eq name='mod' value='1'>odd</eq>">
                   <td>{$record.id}</td>
                   <td class="account">{$record.account}</td>
                   <td class="real-name">{$record.real_name}</td>
@@ -137,6 +140,7 @@
   <div id="shift-box" class="layer-box" style="display: none;">
     <form method="post" enctype="multipart/form-data">
       <input type="hidden" name="promote_id" value="">
+      <input type="hidden" name="parent_id" value="">
       <div class="form-group">
         <label>账号（真实姓名）</label>
         <div class="form-item">
@@ -164,6 +168,18 @@
           <label class="radio-item"><input type="radio" value="2" name="balance_coin_mode"> 平台币清零</label>
         </div>
       </div>
+      <?php if(I('promote_type', 0) != 2):?>
+      <div class="form-group">
+        <label>迁移方式</label>
+        <div class="form-item">
+          <label class="radio-item"><input type="radio" value="1" name="shift_mode" checked> 全部迁移</label>
+          <label class="radio-item"><input type="radio" value="2" name="shift_mode"> 部分迁移</label>
+        </div>
+      </div>
+      <div id="shift-transfer" class="form-group" style="display: none;">
+        <include file="Public/transfer" />
+      </div>
+      <?php endif;?>
       <div class="form-group">
         <label></label>
         <a id="shift-submit" href="javascript:;" class="shift-submit btn">确定</a>
@@ -206,16 +222,21 @@
 <link href="__STATIC__/datetimepicker/css/dropdown.css" rel="stylesheet" type="text/css">
 <script type="text/javascript" src="__STATIC__/datetimepicker/js/bootstrap-datetimepicker.min.js"></script>
 <script type="text/javascript" src="__STATIC__/datetimepicker/js/locales/bootstrap-datetimepicker.zh-CN.js" charset="UTF-8"></script>
+<script src="__STATIC__/vue.js"></script>
+<script src="__JS__/transfer.js"></script>
 <script type="text/javascript">
 $(function(){
   $(".select_gallery").select2();
 
   var promoteType = $('input[name=promote_type]').val()
   var level = 0
+  var subLevel = 0
   if (promoteType == 0) {
     level = 2
+    subLevel = 3
   } else if (promoteType == 1) {
     level = 3
+    subLevel = 4
   } else if (promoteType == 2) {
     level = 3
   }
@@ -238,6 +259,16 @@ $(function(){
     $('#player-to-promote').html(options)
   })
 
+  $('[name=shift_mode]').on({
+    click: function () {
+      if ($(this).val() == 2) {
+        $('#shift-transfer').show()
+      } else {
+        $('#shift-transfer').hide()
+      }
+    }
+  })
+
   function getSubPromotes(data, successCallback) {
     $.ajax({
       url: "{:U('Promote/getSubPromotes')}",
@@ -386,18 +417,27 @@ $(function(){
     click: function() {
       var shiftType = $(this).attr('data-promote-shift-type')
       var shiftTypeName = getShiftTypeName(shiftType)
-      console.log(shiftTypeName)
       var box = $('#shift-box')
-      var id = $(this).parents('tr').eq(0).attr('data-id')
+      var tr = $(this).parents('tr').eq(0)
+      var id = tr.attr('data-id')
+      var parentId = tr.attr('data-parent-id')
+      getSubPromotes({promote_id: id, level: subLevel}, function (response) {
+        vm.init()
+        for (var i in response.data.promotes) {
+          var promote = response.data.promotes[i]
+          vm.initList.push({id: promote.id, name: promote.account + '(' + promote.real_name + ')', type:false, isSearch:true, number:6})
+        }
+      })
       var account = $(this).parents('tr').eq(0).find('td.account').html()
       var realName = $(this).parents('tr').eq(0).find('td.real-name').html()
       box.find('.show-account').html(account + (realName == '' ? '' : '(' + realName + ')'))
       box.find('[name=promote_id]').val(id)
+      box.find('[name=parent_id]').val(parentId)
       layer.open({
         title: shiftTypeName,
         type: 1,
         content: box,
-        area: ['600px', '350px'],
+        area: ['600px', '600px'],
         zIndex: 250,
       })
     }
@@ -405,21 +445,38 @@ $(function(){
 
   $('#shift-submit').on({
     click: function() {
-        var box = $('#shift-box')
-        var id = box.find('[name=promote_id]').val()
-        var toPromoteId = box.find('[name=to_promote_id]').val()
-        var orderTime = box.find('[name=order_time]').val()
-        var balanceCoinMode = box.find('[name=balance_coin_mode]:checked').val()
-        if (toPromoteId == 0) {
-            layer.msg('请选择转移至的推广账号')
+      var box = $('#shift-box')
+      var id = box.find('[name=promote_id]').val()
+      var parentId = box.find('[name=parent_id]').val()
+      var toPromoteId = box.find('[name=to_promote_id]').val()
+      var orderTime = box.find('[name=order_time]').val()
+      var balanceCoinMode = box.find('[name=balance_coin_mode]:checked').val()
+      var shiftIds = []
+      var fromPromoteId = 0
+      if (toPromoteId == 0) {
+        layer.msg('请选择转移至的推广账号')
+        return
+      }
+      if (promoteType == 2) {
+        fromPromoteId = parentId
+        shiftIds = [id]
+      } else {
+        fromPromoteId = id
+        if ($('[name=shift_mode]:checked').val() == 2) {
+          shiftIds = vm.getTargetIds()
+          if (shiftIds.length == 0) {
+            layer.msg('请选择要转移的下级推广账号')
             return
+          }
         }
+      }
       var data = {
-        from_promote_id: id,
+        from_promote_id: fromPromoteId,
         to_promote_id: toPromoteId,
         order_time: orderTime,
         balance_coin_mode: balanceCoinMode,
         type: 1,
+        shift_ids: shiftIds
       }
       $.ajax({
         url: "{:U('Promote/shift')}",
@@ -441,30 +498,31 @@ $(function(){
   
 
   $('.shift-player-btn').on({
-        click: function() {
-        var box = $('#shift-player-box')
-        var id = $(this).parents('tr').eq(0).attr('data-id')
-        var account = $(this).parents('tr').eq(0).find('td.account').html();
-        var realName = $(this).parents('tr').eq(0).find('td.real-name').html();
-        box.find('.show-account').html(account + (realName == '' ? '' : '(' + realName + ')'))
-        box.find('[name=promote_id]').val(id)
-        layer.open({
-            title: '玩家迁移',
-            type: 1,
-            content: box,
-            area: ['600px', '350px'],
-            zIndex: 250,
-        })
-        }
-    })
+    click: function() {
+      var box = $('#shift-player-box')
+      var id = $(this).parents('tr').eq(0).attr('data-id')
+      var account = $(this).parents('tr').eq(0).find('td.account').html();
+      var realName = $(this).parents('tr').eq(0).find('td.real-name').html();
+      box.find('.show-account').html(account + (realName == '' ? '' : '(' + realName + ')'))
+      box.find('[name=promote_id]').val(id)
+      layer.open({
+        title: '玩家迁移',
+        type: 1,
+        content: box,
+        area: ['600px', '350px'],
+        zIndex: 250,
+      })
+    }
+  })
 
   $('#shift-player-submit').on({
     click: function() {
-        var box = $('#shift-player-box')
+      var box = $('#shift-player-box')
       var id = box.find('[name=promote_id]').val()
       var toPromoteId = box.find('[name=to_promote_id]').val()
       var orderTime = box.find('[name=order_time]').val()
       var balanceCoinMode = box.find('[name=balance_coin_mode]:checked').val()
+      var shiftIds = []
       if (toPromoteId == 0) {
         layer.msg('请选择转移至的推广账号')
         return
@@ -475,6 +533,7 @@ $(function(){
         order_time: orderTime,
         balance_coin_mode: balanceCoinMode,
         type: 2,
+        shift_ids: shiftIds
       }
       $.ajax({
         url: "{:U('Promote/shift')}",
diff --git a/Application/Home/View/default/Public/transfer.html b/Application/Home/View/default/Public/transfer.html
new file mode 100644
index 000000000..2005db2b8
--- /dev/null
+++ b/Application/Home/View/default/Public/transfer.html
@@ -0,0 +1,48 @@
+<div id="transfer-app">
+    <div id="transfer">
+        <div class="tra-left">
+            <div class="tra-header">
+                <div class="tra-header-left"><i class="tra-pointer" :class="selectIconLeft" @click="allInitSelect" aria-hidden="true"></i></div>
+                <div class="tra-header-center">全部成员</div>
+                <div class="tra-header-right">{{leftSelectNum}} / {{initNum}}</div>
+            </div>
+            <div class="tra-search">
+                <input type="text" class="form-control" v-model="traLeftInput"/>
+                <span class="fa fa-search searchicon"  aria-hidden="true"></span>
+            </div>
+            <div class="tra-content" v-show="!leftEmpty">
+                <div class="tra-item" v-for="item in initList" v-if="item.isSearch">
+                    <i class="tra-pointer tra-icon fa" :class="item.type ? 'fa-check-square-o':'fa-square-o'" @click="selectLeft(item.id)" aria-hidden="true"></i>
+                    <span>{{item.name}}</span>
+                </div>
+            </div>
+            <div class="tra-empty-content" v-show="leftEmpty">
+                无数据
+            </div>
+        </div>
+        <div class="tra-center">
+            <button class="btn" type="button" @click="toRight" :disabled="leftDisabled" :class="leftDisabled ? '': 'btn-primary'"><i class="fa fa-angle-double-right" aria-hidden="true"></i></button>
+            <button class="btn" type="button" @click="toLeft" :disabled="rightDisabled" :class="rightDisabled ? '': 'btn-primary'"><i class="fa fa-angle-double-left" aria-hidden="true"></i></button>
+        </div>
+        <div class="tra-right">
+            <div class="tra-header">
+                <div class="tra-header-left"><i class="tra-pointer" :class="selectIconRight" @click="allTargetSelect" aria-hidden="true"></i></div>
+                <div class="tra-header-center">选中成员</div>
+                <div class="tra-header-right">{{rightSelectNum}} / {{targetNum}}</div>
+            </div>
+            <div class="tra-search">
+                <input type="text" class="form-control" v-model="traRightInput"/>
+                <span class="fa fa-search searchicon"  aria-hidden="true"></span>
+            </div>
+            <div class="tra-content" v-show="!rightEmpty">
+                <div class="tra-item" v-for="item in targetList" v-if="item.isSearch">
+                    <i class="tra-pointer tra-icon fa" :class="item.type ? 'fa-check-square-o':'fa-square-o'" @click="selectRight(item.id)" aria-hidden="true"></i>
+                    <span>{{item.name}}</span>
+                </div>
+            </div>
+            <div class="tra-empty-content" v-show="rightEmpty">
+                无数据
+            </div>
+        </div>
+    </div>
+</div>
diff --git a/Public/Home/css/transfer.css b/Public/Home/css/transfer.css
new file mode 100644
index 000000000..028562a5a
--- /dev/null
+++ b/Public/Home/css/transfer.css
@@ -0,0 +1,128 @@
+
+/*穿梭框*/
+
+#transfer{
+    display: flex;
+    height: 300px;
+}
+.tra-left,.tra-right{
+    border: 1px solid #cecece;
+    flex: 1;
+    border-radius: 5px;
+    height: 100%;
+    display: flex;
+    flex-direction: column;
+}
+.tra-center{
+    width: 100px;
+    display: flex;
+    flex-direction: column;
+    justify-content: center;
+    align-items: center;
+}
+.tra-center button{
+    margin: 10px 0;
+}
+.tra-header{
+    display: flex;
+    align-items: center;
+    height: 30px;
+    background: #F9FAFC;
+}
+.tra-header-left{
+    width: 50px;
+    text-align: center;
+}
+.tra-header-center{
+    flex: 1;
+}
+.tra-header-right{
+    width: 50px;
+    text-align: center;
+}
+.tra-icon{
+    width: 20px;
+    font-size: 16px;
+}
+.tra-tab{
+    height: 35px;
+    border: 1px solid #cecece;
+    display: flex;
+    border-left: 0;
+    border-right: 0;
+    align-items: center;
+    padding: 0 10px;
+    box-sizing: border-box;
+}
+.activeBottom{
+    border-bottom: 2px solid #2D8CF0!important;
+    transition:all 0.3s;
+}
+.tra-tab-pic{
+    width: 100px;
+    text-align: center;
+    cursor: pointer;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    height: 100%;
+    margin-bottom: 2px;
+    border-bottom: 2px solid #fff;
+    /*box-sizing: border-box;*/
+}
+.tra-search{
+    height: 40px;
+    position: relative;
+    display: flex;
+    align-items: center;
+    overflow: hidden;
+    padding: 0 5px;
+    box-sizing: border-box;
+}
+.searchicon{
+    position: absolute;
+    right: 20px;
+}
+.tra-content{
+    padding: 0 15px;
+    flex: 1;
+    overflow-y: auto;
+}
+.tra-empty-content{
+    padding: 0 15px;
+    flex: 1;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+}
+.tra-item{
+    height: 25px;
+    display: flex;
+    align-items: center;
+}
+.tra-item span{
+    padding-left: 5px;
+    font-size: 14px;
+}
+.tra-pointer{
+    cursor: pointer;
+}
+
+/*滚动条样式*/
+.tra-content::-webkit-scrollbar {
+    /*滚动条整体样式*/
+    width: 4px; /*高宽分别对应横竖滚动条的尺寸*/
+    height: 4px;
+}
+.tra-content::-webkit-scrollbar-thumb {
+    /*滚动条里面小方块*/
+    border-radius: 5px;
+    -webkit-box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.2);
+    background: rgba(0, 0, 0, 0.2);
+}
+.tra-content::-webkit-scrollbar-track {
+    /*滚动条里面轨道*/
+    -webkit-box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.2);
+    border-radius: 0;
+    background: rgba(0, 0, 0, 0.1);
+}
\ No newline at end of file
diff --git a/Public/Home/js/transfer.js b/Public/Home/js/transfer.js
new file mode 100644
index 000000000..1bd30a52e
--- /dev/null
+++ b/Public/Home/js/transfer.js
@@ -0,0 +1,217 @@
+var vm = new Vue({
+    el:'#transfer-app',
+    data:{
+        initList:[],//初始化数据
+        initNum:0,//初始化数据总数
+        targetList:[],//目标数据
+        targetNum:0,//目标数据总数
+        leftSelectNum:0,//左侧选中数据
+        rightSelectNum:0,//右侧选中数据
+        traLeftInput:'',//左边输入框数值
+        traRightInput:'',//右边输入框数值
+        leftEmpty:false,//左侧数据为空
+        rightEmpty:false,//左侧数据为空
+        selectIconLeft:"fa fa-square-o",
+        selectIconRight:"fa fa-square-o",
+        leftDisabled:true,
+        rightDisabled:true,
+        leftActive:1,
+        rightActive:1
+    },
+    mounted:function(){
+        this.init();
+    },
+    watch:{
+        traLeftInput:function (newVal,oldVal) {
+            this.initList.map((item)=>{
+                if(item.name.indexOf(newVal)!=-1){
+                item.isSearch=true
+            }else{
+                item.isSearch=false
+            }
+        })
+
+        },
+        traRightInput:function (newVal,oldVal) {
+            this.targetList.map((item)=>{
+                if(item.name.indexOf(newVal)!=-1){
+                item.isSearch=true
+            }else{
+                item.isSearch=false
+            }
+        })
+        },
+        initList:{
+            handler:function (newVal,oldVal) {
+                var len=newVal.filter(item=>item.type);
+                if(len.length>0){
+                    this.leftDisabled=false;
+                }else{
+                    this.leftDisabled=true;
+                }
+
+                //计算初始化数据长度
+                this.initNum=newVal.length;
+
+                //计算选中数据长度
+                this.leftSelectNum=newVal.filter(item=>item.type).length;
+
+                //判断数据是否为空
+                if(newVal.length>0){
+                    this.leftEmpty=false
+                }else{
+                    this.leftEmpty=true
+                }
+
+            },
+            deep:true
+        },
+        targetList:{
+            handler:function (newVal,oldVal) {
+                var len=newVal.filter(item=>item.type);
+                if(len.length>0){
+                    this.rightDisabled=false;
+                }else{
+                    this.rightDisabled=true;
+                }
+
+                //计算初始化数据长度
+                this.targetNum=newVal.length;
+
+                //计算选中数据长度
+                this.rightSelectNum=newVal.filter(item=>item.type).length;
+
+                //判断数据是否为空
+                if(newVal.length>0){
+                    this.rightEmpty=false;
+                }else{
+                    this.rightEmpty=true;
+                }
+            },
+            deep:true
+        }
+
+    },
+    methods: {
+        init:function(){
+            this.getInitList();
+        },
+        allInitSelect:function () {
+            if(this.selectIconLeft=="fa fa-square-o"){
+                this.selectIconLeft="fa fa-check-square-o";
+                this.initList.map(item=>{item.type=true})
+            }else{
+                this.selectIconLeft="fa fa-square-o";
+                this.initList.map(item=>{item.type=false});
+            }
+        },//左侧全选
+        allTargetSelect:function () {
+            if(this.selectIconRight=="fa fa-square-o"){
+                this.selectIconRight="fa fa-check-square-o";
+                this.targetList.map(item=>{item.type=true})
+            }else{
+                this.selectIconRight="fa fa-square-o";
+                this.targetList.map(item=>{item.type=false});
+            }
+        },//右侧全选
+        getInitList:function () {
+            this.initList = [];
+            // this.initList=[];
+            this.targetList=[];
+            this.initList=this.sortByName(this.initList,'name');
+        },
+        selectLeft:function (id) {
+            this.initList.map((item)=>{
+                if(item.id==id){
+                    item.type=!item.type
+                }
+            })
+        },
+        selectRight:function (id) {
+            this.targetList.map((item)=>{
+                if(item.id==id){
+                    item.type=!item.type
+                }
+            })
+        },
+        toRight:function () {
+            var selArr=this.initList.filter(item=>item.type);
+            var noSelArr=this.initList.filter(item=>!item.type);
+            this.initList=noSelArr;
+            this.targetList=this.targetList.concat(selArr);
+
+            //对目标数据进行重新排序
+            if(this.rightActive==1){
+                this.targetList=this.sortByName(this.targetList,'name');
+            }else{
+                this.targetList=this.sortByNumber(this.targetList,'number');
+            }
+
+            //将目标数据设置为未选中
+            this.targetList.map(item=>{(item.type=false)})
+
+
+        },
+        toLeft:function () {
+            var selArr=this.targetList.filter(item=>item.type);
+            var noSelArr=this.targetList.filter(item=>!item.type);
+            this.targetList=noSelArr;
+            this.initList=this.initList.concat(selArr);
+
+            //对初始数据进行重新排序，并将设置为未选中
+            if(this.leftActive==1){
+                this.initList=this.sortByName(this.initList,'name');
+            }else{
+                this.initList=this.sortByNumber(this.initList,'number');
+            }
+
+            //将初始数据设置为未选中
+            this.initList.map(item=>{(item.type=false)})
+
+        },
+        changeLeftTab:function (num) {
+            this.leftActive=num;
+            if(num==1){
+                this.initList=this.sortByName(this.initList,'name');
+            }else{
+                this.initList=this.sortByNumber(this.initList,'number');
+            }
+        },
+        changeRightTab:function (num) {
+            this.rightActive=num;
+            if(num==1){
+                this.targetList=this.sortByName(this.targetList,'name');
+            }else{
+                this.targetList=this.sortByNumber(this.targetList,'number');
+            }
+        },
+        sortByName:function (arr,type) {
+            return arr.sort((a,b)=>{
+                return (a[type].localeCompare(b[type]))
+            })
+        },
+        sortByNumber:function (arr,type) {
+            return arr.sort((a,b)=>{
+                return (a[type]-b[type]>0)
+            })
+        },
+        getTargetIds() {
+            let ids = []
+            for (let i in this.targetList) {
+                ids.push(this.targetList[i].id)
+            }
+            return ids
+        },
+        save:function(){
+            if(this.targetList.length){
+                let result=[];
+                this.targetList.map(item=>{
+                    return result.push(item.name)
+                })
+                alert('获取的值为:'+result.join(','))
+            }else{
+                alert("获取值为空")
+            }
+        }
+    }
+});
\ No newline at end of file
diff --git a/Public/static/vue.js b/Public/static/vue.js
new file mode 100644
index 000000000..e8bda3b44
--- /dev/null
+++ b/Public/static/vue.js
@@ -0,0 +1,11944 @@
+/*!
+ * Vue.js v2.6.10
+ * (c) 2014-2019 Evan You
+ * Released under the MIT License.
+ */
+(function (global, factory) {
+    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+    typeof define === 'function' && define.amd ? define(factory) :
+    (global = global || self, global.Vue = factory());
+  }(this, function () { 'use strict';
+  
+    /*  */
+  
+    var emptyObject = Object.freeze({});
+  
+    // These helpers produce better VM code in JS engines due to their
+    // explicitness and function inlining.
+    function isUndef (v) {
+      return v === undefined || v === null
+    }
+  
+    function isDef (v) {
+      return v !== undefined && v !== null
+    }
+  
+    function isTrue (v) {
+      return v === true
+    }
+  
+    function isFalse (v) {
+      return v === false
+    }
+  
+    /**
+     * Check if value is primitive.
+     */
+    function isPrimitive (value) {
+      return (
+        typeof value === 'string' ||
+        typeof value === 'number' ||
+        // $flow-disable-line
+        typeof value === 'symbol' ||
+        typeof value === 'boolean'
+      )
+    }
+  
+    /**
+     * Quick object check - this is primarily used to tell
+     * Objects from primitive values when we know the value
+     * is a JSON-compliant type.
+     */
+    function isObject (obj) {
+      return obj !== null && typeof obj === 'object'
+    }
+  
+    /**
+     * Get the raw type string of a value, e.g., [object Object].
+     */
+    var _toString = Object.prototype.toString;
+  
+    function toRawType (value) {
+      return _toString.call(value).slice(8, -1)
+    }
+  
+    /**
+     * Strict object type check. Only returns true
+     * for plain JavaScript objects.
+     */
+    function isPlainObject (obj) {
+      return _toString.call(obj) === '[object Object]'
+    }
+  
+    function isRegExp (v) {
+      return _toString.call(v) === '[object RegExp]'
+    }
+  
+    /**
+     * Check if val is a valid array index.
+     */
+    function isValidArrayIndex (val) {
+      var n = parseFloat(String(val));
+      return n >= 0 && Math.floor(n) === n && isFinite(val)
+    }
+  
+    function isPromise (val) {
+      return (
+        isDef(val) &&
+        typeof val.then === 'function' &&
+        typeof val.catch === 'function'
+      )
+    }
+  
+    /**
+     * Convert a value to a string that is actually rendered.
+     */
+    function toString (val) {
+      return val == null
+        ? ''
+        : Array.isArray(val) || (isPlainObject(val) && val.toString === _toString)
+          ? JSON.stringify(val, null, 2)
+          : String(val)
+    }
+  
+    /**
+     * Convert an input value to a number for persistence.
+     * If the conversion fails, return original string.
+     */
+    function toNumber (val) {
+      var n = parseFloat(val);
+      return isNaN(n) ? val : n
+    }
+  
+    /**
+     * Make a map and return a function for checking if a key
+     * is in that map.
+     */
+    function makeMap (
+      str,
+      expectsLowerCase
+    ) {
+      var map = Object.create(null);
+      var list = str.split(',');
+      for (var i = 0; i < list.length; i++) {
+        map[list[i]] = true;
+      }
+      return expectsLowerCase
+        ? function (val) { return map[val.toLowerCase()]; }
+        : function (val) { return map[val]; }
+    }
+  
+    /**
+     * Check if a tag is a built-in tag.
+     */
+    var isBuiltInTag = makeMap('slot,component', true);
+  
+    /**
+     * Check if an attribute is a reserved attribute.
+     */
+    var isReservedAttribute = makeMap('key,ref,slot,slot-scope,is');
+  
+    /**
+     * Remove an item from an array.
+     */
+    function remove (arr, item) {
+      if (arr.length) {
+        var index = arr.indexOf(item);
+        if (index > -1) {
+          return arr.splice(index, 1)
+        }
+      }
+    }
+  
+    /**
+     * Check whether an object has the property.
+     */
+    var hasOwnProperty = Object.prototype.hasOwnProperty;
+    function hasOwn (obj, key) {
+      return hasOwnProperty.call(obj, key)
+    }
+  
+    /**
+     * Create a cached version of a pure function.
+     */
+    function cached (fn) {
+      var cache = Object.create(null);
+      return (function cachedFn (str) {
+        var hit = cache[str];
+        return hit || (cache[str] = fn(str))
+      })
+    }
+  
+    /**
+     * Camelize a hyphen-delimited string.
+     */
+    var camelizeRE = /-(\w)/g;
+    var camelize = cached(function (str) {
+      return str.replace(camelizeRE, function (_, c) { return c ? c.toUpperCase() : ''; })
+    });
+  
+    /**
+     * Capitalize a string.
+     */
+    var capitalize = cached(function (str) {
+      return str.charAt(0).toUpperCase() + str.slice(1)
+    });
+  
+    /**
+     * Hyphenate a camelCase string.
+     */
+    var hyphenateRE = /\B([A-Z])/g;
+    var hyphenate = cached(function (str) {
+      return str.replace(hyphenateRE, '-$1').toLowerCase()
+    });
+  
+    /**
+     * Simple bind polyfill for environments that do not support it,
+     * e.g., PhantomJS 1.x. Technically, we don't need this anymore
+     * since native bind is now performant enough in most browsers.
+     * But removing it would mean breaking code that was able to run in
+     * PhantomJS 1.x, so this must be kept for backward compatibility.
+     */
+  
+    /* istanbul ignore next */
+    function polyfillBind (fn, ctx) {
+      function boundFn (a) {
+        var l = arguments.length;
+        return l
+          ? l > 1
+            ? fn.apply(ctx, arguments)
+            : fn.call(ctx, a)
+          : fn.call(ctx)
+      }
+  
+      boundFn._length = fn.length;
+      return boundFn
+    }
+  
+    function nativeBind (fn, ctx) {
+      return fn.bind(ctx)
+    }
+  
+    var bind = Function.prototype.bind
+      ? nativeBind
+      : polyfillBind;
+  
+    /**
+     * Convert an Array-like object to a real Array.
+     */
+    function toArray (list, start) {
+      start = start || 0;
+      var i = list.length - start;
+      var ret = new Array(i);
+      while (i--) {
+        ret[i] = list[i + start];
+      }
+      return ret
+    }
+  
+    /**
+     * Mix properties into target object.
+     */
+    function extend (to, _from) {
+      for (var key in _from) {
+        to[key] = _from[key];
+      }
+      return to
+    }
+  
+    /**
+     * Merge an Array of Objects into a single Object.
+     */
+    function toObject (arr) {
+      var res = {};
+      for (var i = 0; i < arr.length; i++) {
+        if (arr[i]) {
+          extend(res, arr[i]);
+        }
+      }
+      return res
+    }
+  
+    /* eslint-disable no-unused-vars */
+  
+    /**
+     * Perform no operation.
+     * Stubbing args to make Flow happy without leaving useless transpiled code
+     * with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/).
+     */
+    function noop (a, b, c) {}
+  
+    /**
+     * Always return false.
+     */
+    var no = function (a, b, c) { return false; };
+  
+    /* eslint-enable no-unused-vars */
+  
+    /**
+     * Return the same value.
+     */
+    var identity = function (_) { return _; };
+  
+    /**
+     * Generate a string containing static keys from compiler modules.
+     */
+    function genStaticKeys (modules) {
+      return modules.reduce(function (keys, m) {
+        return keys.concat(m.staticKeys || [])
+      }, []).join(',')
+    }
+  
+    /**
+     * Check if two values are loosely equal - that is,
+     * if they are plain objects, do they have the same shape?
+     */
+    function looseEqual (a, b) {
+      if (a === b) { return true }
+      var isObjectA = isObject(a);
+      var isObjectB = isObject(b);
+      if (isObjectA && isObjectB) {
+        try {
+          var isArrayA = Array.isArray(a);
+          var isArrayB = Array.isArray(b);
+          if (isArrayA && isArrayB) {
+            return a.length === b.length && a.every(function (e, i) {
+              return looseEqual(e, b[i])
+            })
+          } else if (a instanceof Date && b instanceof Date) {
+            return a.getTime() === b.getTime()
+          } else if (!isArrayA && !isArrayB) {
+            var keysA = Object.keys(a);
+            var keysB = Object.keys(b);
+            return keysA.length === keysB.length && keysA.every(function (key) {
+              return looseEqual(a[key], b[key])
+            })
+          } else {
+            /* istanbul ignore next */
+            return false
+          }
+        } catch (e) {
+          /* istanbul ignore next */
+          return false
+        }
+      } else if (!isObjectA && !isObjectB) {
+        return String(a) === String(b)
+      } else {
+        return false
+      }
+    }
+  
+    /**
+     * Return the first index at which a loosely equal value can be
+     * found in the array (if value is a plain object, the array must
+     * contain an object of the same shape), or -1 if it is not present.
+     */
+    function looseIndexOf (arr, val) {
+      for (var i = 0; i < arr.length; i++) {
+        if (looseEqual(arr[i], val)) { return i }
+      }
+      return -1
+    }
+  
+    /**
+     * Ensure a function is called only once.
+     */
+    function once (fn) {
+      var called = false;
+      return function () {
+        if (!called) {
+          called = true;
+          fn.apply(this, arguments);
+        }
+      }
+    }
+  
+    var SSR_ATTR = 'data-server-rendered';
+  
+    var ASSET_TYPES = [
+      'component',
+      'directive',
+      'filter'
+    ];
+  
+    var LIFECYCLE_HOOKS = [
+      'beforeCreate',
+      'created',
+      'beforeMount',
+      'mounted',
+      'beforeUpdate',
+      'updated',
+      'beforeDestroy',
+      'destroyed',
+      'activated',
+      'deactivated',
+      'errorCaptured',
+      'serverPrefetch'
+    ];
+  
+    /*  */
+  
+  
+  
+    var config = ({
+      /**
+       * Option merge strategies (used in core/util/options)
+       */
+      // $flow-disable-line
+      optionMergeStrategies: Object.create(null),
+  
+      /**
+       * Whether to suppress warnings.
+       */
+      silent: false,
+  
+      /**
+       * Show production mode tip message on boot?
+       */
+      productionTip: "development" !== 'production',
+  
+      /**
+       * Whether to enable devtools
+       */
+      devtools: "development" !== 'production',
+  
+      /**
+       * Whether to record perf
+       */
+      performance: false,
+  
+      /**
+       * Error handler for watcher errors
+       */
+      errorHandler: null,
+  
+      /**
+       * Warn handler for watcher warns
+       */
+      warnHandler: null,
+  
+      /**
+       * Ignore certain custom elements
+       */
+      ignoredElements: [],
+  
+      /**
+       * Custom user key aliases for v-on
+       */
+      // $flow-disable-line
+      keyCodes: Object.create(null),
+  
+      /**
+       * Check if a tag is reserved so that it cannot be registered as a
+       * component. This is platform-dependent and may be overwritten.
+       */
+      isReservedTag: no,
+  
+      /**
+       * Check if an attribute is reserved so that it cannot be used as a component
+       * prop. This is platform-dependent and may be overwritten.
+       */
+      isReservedAttr: no,
+  
+      /**
+       * Check if a tag is an unknown element.
+       * Platform-dependent.
+       */
+      isUnknownElement: no,
+  
+      /**
+       * Get the namespace of an element
+       */
+      getTagNamespace: noop,
+  
+      /**
+       * Parse the real tag name for the specific platform.
+       */
+      parsePlatformTagName: identity,
+  
+      /**
+       * Check if an attribute must be bound using property, e.g. value
+       * Platform-dependent.
+       */
+      mustUseProp: no,
+  
+      /**
+       * Perform updates asynchronously. Intended to be used by Vue Test Utils
+       * This will significantly reduce performance if set to false.
+       */
+      async: true,
+  
+      /**
+       * Exposed for legacy reasons
+       */
+      _lifecycleHooks: LIFECYCLE_HOOKS
+    });
+  
+    /*  */
+  
+    /**
+     * unicode letters used for parsing html tags, component names and property paths.
+     * using https://www.w3.org/TR/html53/semantics-scripting.html#potentialcustomelementname
+     * skipping \u10000-\uEFFFF due to it freezing up PhantomJS
+     */
+    var unicodeRegExp = /a-zA-Z\u00B7\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u037D\u037F-\u1FFF\u200C-\u200D\u203F-\u2040\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD/;
+  
+    /**
+     * Check if a string starts with $ or _
+     */
+    function isReserved (str) {
+      var c = (str + '').charCodeAt(0);
+      return c === 0x24 || c === 0x5F
+    }
+  
+    /**
+     * Define a property.
+     */
+    function def (obj, key, val, enumerable) {
+      Object.defineProperty(obj, key, {
+        value: val,
+        enumerable: !!enumerable,
+        writable: true,
+        configurable: true
+      });
+    }
+  
+    /**
+     * Parse simple path.
+     */
+    var bailRE = new RegExp(("[^" + (unicodeRegExp.source) + ".$_\\d]"));
+    function parsePath (path) {
+      if (bailRE.test(path)) {
+        return
+      }
+      var segments = path.split('.');
+      return function (obj) {
+        for (var i = 0; i < segments.length; i++) {
+          if (!obj) { return }
+          obj = obj[segments[i]];
+        }
+        return obj
+      }
+    }
+  
+    /*  */
+  
+    // can we use __proto__?
+    var hasProto = '__proto__' in {};
+  
+    // Browser environment sniffing
+    var inBrowser = typeof window !== 'undefined';
+    var inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform;
+    var weexPlatform = inWeex && WXEnvironment.platform.toLowerCase();
+    var UA = inBrowser && window.navigator.userAgent.toLowerCase();
+    var isIE = UA && /msie|trident/.test(UA);
+    var isIE9 = UA && UA.indexOf('msie 9.0') > 0;
+    var isEdge = UA && UA.indexOf('edge/') > 0;
+    var isAndroid = (UA && UA.indexOf('android') > 0) || (weexPlatform === 'android');
+    var isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || (weexPlatform === 'ios');
+    var isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge;
+    var isPhantomJS = UA && /phantomjs/.test(UA);
+    var isFF = UA && UA.match(/firefox\/(\d+)/);
+  
+    // Firefox has a "watch" function on Object.prototype...
+    var nativeWatch = ({}).watch;
+  
+    var supportsPassive = false;
+    if (inBrowser) {
+      try {
+        var opts = {};
+        Object.defineProperty(opts, 'passive', ({
+          get: function get () {
+            /* istanbul ignore next */
+            supportsPassive = true;
+          }
+        })); // https://github.com/facebook/flow/issues/285
+        window.addEventListener('test-passive', null, opts);
+      } catch (e) {}
+    }
+  
+    // this needs to be lazy-evaled because vue may be required before
+    // vue-server-renderer can set VUE_ENV
+    var _isServer;
+    var isServerRendering = function () {
+      if (_isServer === undefined) {
+        /* istanbul ignore if */
+        if (!inBrowser && !inWeex && typeof global !== 'undefined') {
+          // detect presence of vue-server-renderer and avoid
+          // Webpack shimming the process
+          _isServer = global['process'] && global['process'].env.VUE_ENV === 'server';
+        } else {
+          _isServer = false;
+        }
+      }
+      return _isServer
+    };
+  
+    // detect devtools
+    var devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__;
+  
+    /* istanbul ignore next */
+    function isNative (Ctor) {
+      return typeof Ctor === 'function' && /native code/.test(Ctor.toString())
+    }
+  
+    var hasSymbol =
+      typeof Symbol !== 'undefined' && isNative(Symbol) &&
+      typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys);
+  
+    var _Set;
+    /* istanbul ignore if */ // $flow-disable-line
+    if (typeof Set !== 'undefined' && isNative(Set)) {
+      // use native Set when available.
+      _Set = Set;
+    } else {
+      // a non-standard Set polyfill that only works with primitive keys.
+      _Set = /*@__PURE__*/(function () {
+        function Set () {
+          this.set = Object.create(null);
+        }
+        Set.prototype.has = function has (key) {
+          return this.set[key] === true
+        };
+        Set.prototype.add = function add (key) {
+          this.set[key] = true;
+        };
+        Set.prototype.clear = function clear () {
+          this.set = Object.create(null);
+        };
+  
+        return Set;
+      }());
+    }
+  
+    /*  */
+  
+    var warn = noop;
+    var tip = noop;
+    var generateComponentTrace = (noop); // work around flow check
+    var formatComponentName = (noop);
+  
+    {
+      var hasConsole = typeof console !== 'undefined';
+      var classifyRE = /(?:^|[-_])(\w)/g;
+      var classify = function (str) { return str
+        .replace(classifyRE, function (c) { return c.toUpperCase(); })
+        .replace(/[-_]/g, ''); };
+  
+      warn = function (msg, vm) {
+        var trace = vm ? generateComponentTrace(vm) : '';
+  
+        if (config.warnHandler) {
+          config.warnHandler.call(null, msg, vm, trace);
+        } else if (hasConsole && (!config.silent)) {
+          console.error(("[Vue warn]: " + msg + trace));
+        }
+      };
+  
+      tip = function (msg, vm) {
+        if (hasConsole && (!config.silent)) {
+          console.warn("[Vue tip]: " + msg + (
+            vm ? generateComponentTrace(vm) : ''
+          ));
+        }
+      };
+  
+      formatComponentName = function (vm, includeFile) {
+        if (vm.$root === vm) {
+          return '<Root>'
+        }
+        var options = typeof vm === 'function' && vm.cid != null
+          ? vm.options
+          : vm._isVue
+            ? vm.$options || vm.constructor.options
+            : vm;
+        var name = options.name || options._componentTag;
+        var file = options.__file;
+        if (!name && file) {
+          var match = file.match(/([^/\\]+)\.vue$/);
+          name = match && match[1];
+        }
+  
+        return (
+          (name ? ("<" + (classify(name)) + ">") : "<Anonymous>") +
+          (file && includeFile !== false ? (" at " + file) : '')
+        )
+      };
+  
+      var repeat = function (str, n) {
+        var res = '';
+        while (n) {
+          if (n % 2 === 1) { res += str; }
+          if (n > 1) { str += str; }
+          n >>= 1;
+        }
+        return res
+      };
+  
+      generateComponentTrace = function (vm) {
+        if (vm._isVue && vm.$parent) {
+          var tree = [];
+          var currentRecursiveSequence = 0;
+          while (vm) {
+            if (tree.length > 0) {
+              var last = tree[tree.length - 1];
+              if (last.constructor === vm.constructor) {
+                currentRecursiveSequence++;
+                vm = vm.$parent;
+                continue
+              } else if (currentRecursiveSequence > 0) {
+                tree[tree.length - 1] = [last, currentRecursiveSequence];
+                currentRecursiveSequence = 0;
+              }
+            }
+            tree.push(vm);
+            vm = vm.$parent;
+          }
+          return '\n\nfound in\n\n' + tree
+            .map(function (vm, i) { return ("" + (i === 0 ? '---> ' : repeat(' ', 5 + i * 2)) + (Array.isArray(vm)
+                ? ((formatComponentName(vm[0])) + "... (" + (vm[1]) + " recursive calls)")
+                : formatComponentName(vm))); })
+            .join('\n')
+        } else {
+          return ("\n\n(found in " + (formatComponentName(vm)) + ")")
+        }
+      };
+    }
+  
+    /*  */
+  
+    var uid = 0;
+  
+    /**
+     * A dep is an observable that can have multiple
+     * directives subscribing to it.
+     */
+    var Dep = function Dep () {
+      this.id = uid++;
+      this.subs = [];
+    };
+  
+    Dep.prototype.addSub = function addSub (sub) {
+      this.subs.push(sub);
+    };
+  
+    Dep.prototype.removeSub = function removeSub (sub) {
+      remove(this.subs, sub);
+    };
+  
+    Dep.prototype.depend = function depend () {
+      if (Dep.target) {
+        Dep.target.addDep(this);
+      }
+    };
+  
+    Dep.prototype.notify = function notify () {
+      // stabilize the subscriber list first
+      var subs = this.subs.slice();
+      if (!config.async) {
+        // subs aren't sorted in scheduler if not running async
+        // we need to sort them now to make sure they fire in correct
+        // order
+        subs.sort(function (a, b) { return a.id - b.id; });
+      }
+      for (var i = 0, l = subs.length; i < l; i++) {
+        subs[i].update();
+      }
+    };
+  
+    // The current target watcher being evaluated.
+    // This is globally unique because only one watcher
+    // can be evaluated at a time.
+    Dep.target = null;
+    var targetStack = [];
+  
+    function pushTarget (target) {
+      targetStack.push(target);
+      Dep.target = target;
+    }
+  
+    function popTarget () {
+      targetStack.pop();
+      Dep.target = targetStack[targetStack.length - 1];
+    }
+  
+    /*  */
+  
+    var VNode = function VNode (
+      tag,
+      data,
+      children,
+      text,
+      elm,
+      context,
+      componentOptions,
+      asyncFactory
+    ) {
+      this.tag = tag;
+      this.data = data;
+      this.children = children;
+      this.text = text;
+      this.elm = elm;
+      this.ns = undefined;
+      this.context = context;
+      this.fnContext = undefined;
+      this.fnOptions = undefined;
+      this.fnScopeId = undefined;
+      this.key = data && data.key;
+      this.componentOptions = componentOptions;
+      this.componentInstance = undefined;
+      this.parent = undefined;
+      this.raw = false;
+      this.isStatic = false;
+      this.isRootInsert = true;
+      this.isComment = false;
+      this.isCloned = false;
+      this.isOnce = false;
+      this.asyncFactory = asyncFactory;
+      this.asyncMeta = undefined;
+      this.isAsyncPlaceholder = false;
+    };
+  
+    var prototypeAccessors = { child: { configurable: true } };
+  
+    // DEPRECATED: alias for componentInstance for backwards compat.
+    /* istanbul ignore next */
+    prototypeAccessors.child.get = function () {
+      return this.componentInstance
+    };
+  
+    Object.defineProperties( VNode.prototype, prototypeAccessors );
+  
+    var createEmptyVNode = function (text) {
+      if ( text === void 0 ) text = '';
+  
+      var node = new VNode();
+      node.text = text;
+      node.isComment = true;
+      return node
+    };
+  
+    function createTextVNode (val) {
+      return new VNode(undefined, undefined, undefined, String(val))
+    }
+  
+    // optimized shallow clone
+    // used for static nodes and slot nodes because they may be reused across
+    // multiple renders, cloning them avoids errors when DOM manipulations rely
+    // on their elm reference.
+    function cloneVNode (vnode) {
+      var cloned = new VNode(
+        vnode.tag,
+        vnode.data,
+        // #7975
+        // clone children array to avoid mutating original in case of cloning
+        // a child.
+        vnode.children && vnode.children.slice(),
+        vnode.text,
+        vnode.elm,
+        vnode.context,
+        vnode.componentOptions,
+        vnode.asyncFactory
+      );
+      cloned.ns = vnode.ns;
+      cloned.isStatic = vnode.isStatic;
+      cloned.key = vnode.key;
+      cloned.isComment = vnode.isComment;
+      cloned.fnContext = vnode.fnContext;
+      cloned.fnOptions = vnode.fnOptions;
+      cloned.fnScopeId = vnode.fnScopeId;
+      cloned.asyncMeta = vnode.asyncMeta;
+      cloned.isCloned = true;
+      return cloned
+    }
+  
+    /*
+     * not type checking this file because flow doesn't play well with
+     * dynamically accessing methods on Array prototype
+     */
+  
+    var arrayProto = Array.prototype;
+    var arrayMethods = Object.create(arrayProto);
+  
+    var methodsToPatch = [
+      'push',
+      'pop',
+      'shift',
+      'unshift',
+      'splice',
+      'sort',
+      'reverse'
+    ];
+  
+    /**
+     * Intercept mutating methods and emit events
+     */
+    methodsToPatch.forEach(function (method) {
+      // cache original method
+      var original = arrayProto[method];
+      def(arrayMethods, method, function mutator () {
+        var args = [], len = arguments.length;
+        while ( len-- ) args[ len ] = arguments[ len ];
+  
+        var result = original.apply(this, args);
+        var ob = this.__ob__;
+        var inserted;
+        switch (method) {
+          case 'push':
+          case 'unshift':
+            inserted = args;
+            break
+          case 'splice':
+            inserted = args.slice(2);
+            break
+        }
+        if (inserted) { ob.observeArray(inserted); }
+        // notify change
+        ob.dep.notify();
+        return result
+      });
+    });
+  
+    /*  */
+  
+    var arrayKeys = Object.getOwnPropertyNames(arrayMethods);
+  
+    /**
+     * In some cases we may want to disable observation inside a component's
+     * update computation.
+     */
+    var shouldObserve = true;
+  
+    function toggleObserving (value) {
+      shouldObserve = value;
+    }
+  
+    /**
+     * Observer class that is attached to each observed
+     * object. Once attached, the observer converts the target
+     * object's property keys into getter/setters that
+     * collect dependencies and dispatch updates.
+     */
+    var Observer = function Observer (value) {
+      this.value = value;
+      this.dep = new Dep();
+      this.vmCount = 0;
+      def(value, '__ob__', this);
+      if (Array.isArray(value)) {
+        if (hasProto) {
+          protoAugment(value, arrayMethods);
+        } else {
+          copyAugment(value, arrayMethods, arrayKeys);
+        }
+        this.observeArray(value);
+      } else {
+        this.walk(value);
+      }
+    };
+  
+    /**
+     * Walk through all properties and convert them into
+     * getter/setters. This method should only be called when
+     * value type is Object.
+     */
+    Observer.prototype.walk = function walk (obj) {
+      var keys = Object.keys(obj);
+      for (var i = 0; i < keys.length; i++) {
+        defineReactive$$1(obj, keys[i]);
+      }
+    };
+  
+    /**
+     * Observe a list of Array items.
+     */
+    Observer.prototype.observeArray = function observeArray (items) {
+      for (var i = 0, l = items.length; i < l; i++) {
+        observe(items[i]);
+      }
+    };
+  
+    // helpers
+  
+    /**
+     * Augment a target Object or Array by intercepting
+     * the prototype chain using __proto__
+     */
+    function protoAugment (target, src) {
+      /* eslint-disable no-proto */
+      target.__proto__ = src;
+      /* eslint-enable no-proto */
+    }
+  
+    /**
+     * Augment a target Object or Array by defining
+     * hidden properties.
+     */
+    /* istanbul ignore next */
+    function copyAugment (target, src, keys) {
+      for (var i = 0, l = keys.length; i < l; i++) {
+        var key = keys[i];
+        def(target, key, src[key]);
+      }
+    }
+  
+    /**
+     * Attempt to create an observer instance for a value,
+     * returns the new observer if successfully observed,
+     * or the existing observer if the value already has one.
+     */
+    function observe (value, asRootData) {
+      if (!isObject(value) || value instanceof VNode) {
+        return
+      }
+      var ob;
+      if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {
+        ob = value.__ob__;
+      } else if (
+        shouldObserve &&
+        !isServerRendering() &&
+        (Array.isArray(value) || isPlainObject(value)) &&
+        Object.isExtensible(value) &&
+        !value._isVue
+      ) {
+        ob = new Observer(value);
+      }
+      if (asRootData && ob) {
+        ob.vmCount++;
+      }
+      return ob
+    }
+  
+    /**
+     * Define a reactive property on an Object.
+     */
+    function defineReactive$$1 (
+      obj,
+      key,
+      val,
+      customSetter,
+      shallow
+    ) {
+      var dep = new Dep();
+  
+      var property = Object.getOwnPropertyDescriptor(obj, key);
+      if (property && property.configurable === false) {
+        return
+      }
+  
+      // cater for pre-defined getter/setters
+      var getter = property && property.get;
+      var setter = property && property.set;
+      if ((!getter || setter) && arguments.length === 2) {
+        val = obj[key];
+      }
+  
+      var childOb = !shallow && observe(val);
+      Object.defineProperty(obj, key, {
+        enumerable: true,
+        configurable: true,
+        get: function reactiveGetter () {
+          var value = getter ? getter.call(obj) : val;
+          if (Dep.target) {
+            dep.depend();
+            if (childOb) {
+              childOb.dep.depend();
+              if (Array.isArray(value)) {
+                dependArray(value);
+              }
+            }
+          }
+          return value
+        },
+        set: function reactiveSetter (newVal) {
+          var value = getter ? getter.call(obj) : val;
+          /* eslint-disable no-self-compare */
+          if (newVal === value || (newVal !== newVal && value !== value)) {
+            return
+          }
+          /* eslint-enable no-self-compare */
+          if (customSetter) {
+            customSetter();
+          }
+          // #7981: for accessor properties without setter
+          if (getter && !setter) { return }
+          if (setter) {
+            setter.call(obj, newVal);
+          } else {
+            val = newVal;
+          }
+          childOb = !shallow && observe(newVal);
+          dep.notify();
+        }
+      });
+    }
+  
+    /**
+     * Set a property on an object. Adds the new property and
+     * triggers change notification if the property doesn't
+     * already exist.
+     */
+    function set (target, key, val) {
+      if (isUndef(target) || isPrimitive(target)
+      ) {
+        warn(("Cannot set reactive property on undefined, null, or primitive value: " + ((target))));
+      }
+      if (Array.isArray(target) && isValidArrayIndex(key)) {
+        target.length = Math.max(target.length, key);
+        target.splice(key, 1, val);
+        return val
+      }
+      if (key in target && !(key in Object.prototype)) {
+        target[key] = val;
+        return val
+      }
+      var ob = (target).__ob__;
+      if (target._isVue || (ob && ob.vmCount)) {
+        warn(
+          'Avoid adding reactive properties to a Vue instance or its root $data ' +
+          'at runtime - declare it upfront in the data option.'
+        );
+        return val
+      }
+      if (!ob) {
+        target[key] = val;
+        return val
+      }
+      defineReactive$$1(ob.value, key, val);
+      ob.dep.notify();
+      return val
+    }
+  
+    /**
+     * Delete a property and trigger change if necessary.
+     */
+    function del (target, key) {
+      if (isUndef(target) || isPrimitive(target)
+      ) {
+        warn(("Cannot delete reactive property on undefined, null, or primitive value: " + ((target))));
+      }
+      if (Array.isArray(target) && isValidArrayIndex(key)) {
+        target.splice(key, 1);
+        return
+      }
+      var ob = (target).__ob__;
+      if (target._isVue || (ob && ob.vmCount)) {
+        warn(
+          'Avoid deleting properties on a Vue instance or its root $data ' +
+          '- just set it to null.'
+        );
+        return
+      }
+      if (!hasOwn(target, key)) {
+        return
+      }
+      delete target[key];
+      if (!ob) {
+        return
+      }
+      ob.dep.notify();
+    }
+  
+    /**
+     * Collect dependencies on array elements when the array is touched, since
+     * we cannot intercept array element access like property getters.
+     */
+    function dependArray (value) {
+      for (var e = (void 0), i = 0, l = value.length; i < l; i++) {
+        e = value[i];
+        e && e.__ob__ && e.__ob__.dep.depend();
+        if (Array.isArray(e)) {
+          dependArray(e);
+        }
+      }
+    }
+  
+    /*  */
+  
+    /**
+     * Option overwriting strategies are functions that handle
+     * how to merge a parent option value and a child option
+     * value into the final value.
+     */
+    var strats = config.optionMergeStrategies;
+  
+    /**
+     * Options with restrictions
+     */
+    {
+      strats.el = strats.propsData = function (parent, child, vm, key) {
+        if (!vm) {
+          warn(
+            "option \"" + key + "\" can only be used during instance " +
+            'creation with the `new` keyword.'
+          );
+        }
+        return defaultStrat(parent, child)
+      };
+    }
+  
+    /**
+     * Helper that recursively merges two data objects together.
+     */
+    function mergeData (to, from) {
+      if (!from) { return to }
+      var key, toVal, fromVal;
+  
+      var keys = hasSymbol
+        ? Reflect.ownKeys(from)
+        : Object.keys(from);
+  
+      for (var i = 0; i < keys.length; i++) {
+        key = keys[i];
+        // in case the object is already observed...
+        if (key === '__ob__') { continue }
+        toVal = to[key];
+        fromVal = from[key];
+        if (!hasOwn(to, key)) {
+          set(to, key, fromVal);
+        } else if (
+          toVal !== fromVal &&
+          isPlainObject(toVal) &&
+          isPlainObject(fromVal)
+        ) {
+          mergeData(toVal, fromVal);
+        }
+      }
+      return to
+    }
+  
+    /**
+     * Data
+     */
+    function mergeDataOrFn (
+      parentVal,
+      childVal,
+      vm
+    ) {
+      if (!vm) {
+        // in a Vue.extend merge, both should be functions
+        if (!childVal) {
+          return parentVal
+        }
+        if (!parentVal) {
+          return childVal
+        }
+        // when parentVal & childVal are both present,
+        // we need to return a function that returns the
+        // merged result of both functions... no need to
+        // check if parentVal is a function here because
+        // it has to be a function to pass previous merges.
+        return function mergedDataFn () {
+          return mergeData(
+            typeof childVal === 'function' ? childVal.call(this, this) : childVal,
+            typeof parentVal === 'function' ? parentVal.call(this, this) : parentVal
+          )
+        }
+      } else {
+        return function mergedInstanceDataFn () {
+          // instance merge
+          var instanceData = typeof childVal === 'function'
+            ? childVal.call(vm, vm)
+            : childVal;
+          var defaultData = typeof parentVal === 'function'
+            ? parentVal.call(vm, vm)
+            : parentVal;
+          if (instanceData) {
+            return mergeData(instanceData, defaultData)
+          } else {
+            return defaultData
+          }
+        }
+      }
+    }
+  
+    strats.data = function (
+      parentVal,
+      childVal,
+      vm
+    ) {
+      if (!vm) {
+        if (childVal && typeof childVal !== 'function') {
+          warn(
+            'The "data" option should be a function ' +
+            'that returns a per-instance value in component ' +
+            'definitions.',
+            vm
+          );
+  
+          return parentVal
+        }
+        return mergeDataOrFn(parentVal, childVal)
+      }
+  
+      return mergeDataOrFn(parentVal, childVal, vm)
+    };
+  
+    /**
+     * Hooks and props are merged as arrays.
+     */
+    function mergeHook (
+      parentVal,
+      childVal
+    ) {
+      var res = childVal
+        ? parentVal
+          ? parentVal.concat(childVal)
+          : Array.isArray(childVal)
+            ? childVal
+            : [childVal]
+        : parentVal;
+      return res
+        ? dedupeHooks(res)
+        : res
+    }
+  
+    function dedupeHooks (hooks) {
+      var res = [];
+      for (var i = 0; i < hooks.length; i++) {
+        if (res.indexOf(hooks[i]) === -1) {
+          res.push(hooks[i]);
+        }
+      }
+      return res
+    }
+  
+    LIFECYCLE_HOOKS.forEach(function (hook) {
+      strats[hook] = mergeHook;
+    });
+  
+    /**
+     * Assets
+     *
+     * When a vm is present (instance creation), we need to do
+     * a three-way merge between constructor options, instance
+     * options and parent options.
+     */
+    function mergeAssets (
+      parentVal,
+      childVal,
+      vm,
+      key
+    ) {
+      var res = Object.create(parentVal || null);
+      if (childVal) {
+        assertObjectType(key, childVal, vm);
+        return extend(res, childVal)
+      } else {
+        return res
+      }
+    }
+  
+    ASSET_TYPES.forEach(function (type) {
+      strats[type + 's'] = mergeAssets;
+    });
+  
+    /**
+     * Watchers.
+     *
+     * Watchers hashes should not overwrite one
+     * another, so we merge them as arrays.
+     */
+    strats.watch = function (
+      parentVal,
+      childVal,
+      vm,
+      key
+    ) {
+      // work around Firefox's Object.prototype.watch...
+      if (parentVal === nativeWatch) { parentVal = undefined; }
+      if (childVal === nativeWatch) { childVal = undefined; }
+      /* istanbul ignore if */
+      if (!childVal) { return Object.create(parentVal || null) }
+      {
+        assertObjectType(key, childVal, vm);
+      }
+      if (!parentVal) { return childVal }
+      var ret = {};
+      extend(ret, parentVal);
+      for (var key$1 in childVal) {
+        var parent = ret[key$1];
+        var child = childVal[key$1];
+        if (parent && !Array.isArray(parent)) {
+          parent = [parent];
+        }
+        ret[key$1] = parent
+          ? parent.concat(child)
+          : Array.isArray(child) ? child : [child];
+      }
+      return ret
+    };
+  
+    /**
+     * Other object hashes.
+     */
+    strats.props =
+    strats.methods =
+    strats.inject =
+    strats.computed = function (
+      parentVal,
+      childVal,
+      vm,
+      key
+    ) {
+      if (childVal && "development" !== 'production') {
+        assertObjectType(key, childVal, vm);
+      }
+      if (!parentVal) { return childVal }
+      var ret = Object.create(null);
+      extend(ret, parentVal);
+      if (childVal) { extend(ret, childVal); }
+      return ret
+    };
+    strats.provide = mergeDataOrFn;
+  
+    /**
+     * Default strategy.
+     */
+    var defaultStrat = function (parentVal, childVal) {
+      return childVal === undefined
+        ? parentVal
+        : childVal
+    };
+  
+    /**
+     * Validate component names
+     */
+    function checkComponents (options) {
+      for (var key in options.components) {
+        validateComponentName(key);
+      }
+    }
+  
+    function validateComponentName (name) {
+      if (!new RegExp(("^[a-zA-Z][\\-\\.0-9_" + (unicodeRegExp.source) + "]*$")).test(name)) {
+        warn(
+          'Invalid component name: "' + name + '". Component names ' +
+          'should conform to valid custom element name in html5 specification.'
+        );
+      }
+      if (isBuiltInTag(name) || config.isReservedTag(name)) {
+        warn(
+          'Do not use built-in or reserved HTML elements as component ' +
+          'id: ' + name
+        );
+      }
+    }
+  
+    /**
+     * Ensure all props option syntax are normalized into the
+     * Object-based format.
+     */
+    function normalizeProps (options, vm) {
+      var props = options.props;
+      if (!props) { return }
+      var res = {};
+      var i, val, name;
+      if (Array.isArray(props)) {
+        i = props.length;
+        while (i--) {
+          val = props[i];
+          if (typeof val === 'string') {
+            name = camelize(val);
+            res[name] = { type: null };
+          } else {
+            warn('props must be strings when using array syntax.');
+          }
+        }
+      } else if (isPlainObject(props)) {
+        for (var key in props) {
+          val = props[key];
+          name = camelize(key);
+          res[name] = isPlainObject(val)
+            ? val
+            : { type: val };
+        }
+      } else {
+        warn(
+          "Invalid value for option \"props\": expected an Array or an Object, " +
+          "but got " + (toRawType(props)) + ".",
+          vm
+        );
+      }
+      options.props = res;
+    }
+  
+    /**
+     * Normalize all injections into Object-based format
+     */
+    function normalizeInject (options, vm) {
+      var inject = options.inject;
+      if (!inject) { return }
+      var normalized = options.inject = {};
+      if (Array.isArray(inject)) {
+        for (var i = 0; i < inject.length; i++) {
+          normalized[inject[i]] = { from: inject[i] };
+        }
+      } else if (isPlainObject(inject)) {
+        for (var key in inject) {
+          var val = inject[key];
+          normalized[key] = isPlainObject(val)
+            ? extend({ from: key }, val)
+            : { from: val };
+        }
+      } else {
+        warn(
+          "Invalid value for option \"inject\": expected an Array or an Object, " +
+          "but got " + (toRawType(inject)) + ".",
+          vm
+        );
+      }
+    }
+  
+    /**
+     * Normalize raw function directives into object format.
+     */
+    function normalizeDirectives (options) {
+      var dirs = options.directives;
+      if (dirs) {
+        for (var key in dirs) {
+          var def$$1 = dirs[key];
+          if (typeof def$$1 === 'function') {
+            dirs[key] = { bind: def$$1, update: def$$1 };
+          }
+        }
+      }
+    }
+  
+    function assertObjectType (name, value, vm) {
+      if (!isPlainObject(value)) {
+        warn(
+          "Invalid value for option \"" + name + "\": expected an Object, " +
+          "but got " + (toRawType(value)) + ".",
+          vm
+        );
+      }
+    }
+  
+    /**
+     * Merge two option objects into a new one.
+     * Core utility used in both instantiation and inheritance.
+     */
+    function mergeOptions (
+      parent,
+      child,
+      vm
+    ) {
+      {
+        checkComponents(child);
+      }
+  
+      if (typeof child === 'function') {
+        child = child.options;
+      }
+  
+      normalizeProps(child, vm);
+      normalizeInject(child, vm);
+      normalizeDirectives(child);
+  
+      // Apply extends and mixins on the child options,
+      // but only if it is a raw options object that isn't
+      // the result of another mergeOptions call.
+      // Only merged options has the _base property.
+      if (!child._base) {
+        if (child.extends) {
+          parent = mergeOptions(parent, child.extends, vm);
+        }
+        if (child.mixins) {
+          for (var i = 0, l = child.mixins.length; i < l; i++) {
+            parent = mergeOptions(parent, child.mixins[i], vm);
+          }
+        }
+      }
+  
+      var options = {};
+      var key;
+      for (key in parent) {
+        mergeField(key);
+      }
+      for (key in child) {
+        if (!hasOwn(parent, key)) {
+          mergeField(key);
+        }
+      }
+      function mergeField (key) {
+        var strat = strats[key] || defaultStrat;
+        options[key] = strat(parent[key], child[key], vm, key);
+      }
+      return options
+    }
+  
+    /**
+     * Resolve an asset.
+     * This function is used because child instances need access
+     * to assets defined in its ancestor chain.
+     */
+    function resolveAsset (
+      options,
+      type,
+      id,
+      warnMissing
+    ) {
+      /* istanbul ignore if */
+      if (typeof id !== 'string') {
+        return
+      }
+      var assets = options[type];
+      // check local registration variations first
+      if (hasOwn(assets, id)) { return assets[id] }
+      var camelizedId = camelize(id);
+      if (hasOwn(assets, camelizedId)) { return assets[camelizedId] }
+      var PascalCaseId = capitalize(camelizedId);
+      if (hasOwn(assets, PascalCaseId)) { return assets[PascalCaseId] }
+      // fallback to prototype chain
+      var res = assets[id] || assets[camelizedId] || assets[PascalCaseId];
+      if (warnMissing && !res) {
+        warn(
+          'Failed to resolve ' + type.slice(0, -1) + ': ' + id,
+          options
+        );
+      }
+      return res
+    }
+  
+    /*  */
+  
+  
+  
+    function validateProp (
+      key,
+      propOptions,
+      propsData,
+      vm
+    ) {
+      var prop = propOptions[key];
+      var absent = !hasOwn(propsData, key);
+      var value = propsData[key];
+      // boolean casting
+      var booleanIndex = getTypeIndex(Boolean, prop.type);
+      if (booleanIndex > -1) {
+        if (absent && !hasOwn(prop, 'default')) {
+          value = false;
+        } else if (value === '' || value === hyphenate(key)) {
+          // only cast empty string / same name to boolean if
+          // boolean has higher priority
+          var stringIndex = getTypeIndex(String, prop.type);
+          if (stringIndex < 0 || booleanIndex < stringIndex) {
+            value = true;
+          }
+        }
+      }
+      // check default value
+      if (value === undefined) {
+        value = getPropDefaultValue(vm, prop, key);
+        // since the default value is a fresh copy,
+        // make sure to observe it.
+        var prevShouldObserve = shouldObserve;
+        toggleObserving(true);
+        observe(value);
+        toggleObserving(prevShouldObserve);
+      }
+      {
+        assertProp(prop, key, value, vm, absent);
+      }
+      return value
+    }
+  
+    /**
+     * Get the default value of a prop.
+     */
+    function getPropDefaultValue (vm, prop, key) {
+      // no default, return undefined
+      if (!hasOwn(prop, 'default')) {
+        return undefined
+      }
+      var def = prop.default;
+      // warn against non-factory defaults for Object & Array
+      if (isObject(def)) {
+        warn(
+          'Invalid default value for prop "' + key + '": ' +
+          'Props with type Object/Array must use a factory function ' +
+          'to return the default value.',
+          vm
+        );
+      }
+      // the raw prop value was also undefined from previous render,
+      // return previous default value to avoid unnecessary watcher trigger
+      if (vm && vm.$options.propsData &&
+        vm.$options.propsData[key] === undefined &&
+        vm._props[key] !== undefined
+      ) {
+        return vm._props[key]
+      }
+      // call factory function for non-Function types
+      // a value is Function if its prototype is function even across different execution context
+      return typeof def === 'function' && getType(prop.type) !== 'Function'
+        ? def.call(vm)
+        : def
+    }
+  
+    /**
+     * Assert whether a prop is valid.
+     */
+    function assertProp (
+      prop,
+      name,
+      value,
+      vm,
+      absent
+    ) {
+      if (prop.required && absent) {
+        warn(
+          'Missing required prop: "' + name + '"',
+          vm
+        );
+        return
+      }
+      if (value == null && !prop.required) {
+        return
+      }
+      var type = prop.type;
+      var valid = !type || type === true;
+      var expectedTypes = [];
+      if (type) {
+        if (!Array.isArray(type)) {
+          type = [type];
+        }
+        for (var i = 0; i < type.length && !valid; i++) {
+          var assertedType = assertType(value, type[i]);
+          expectedTypes.push(assertedType.expectedType || '');
+          valid = assertedType.valid;
+        }
+      }
+  
+      if (!valid) {
+        warn(
+          getInvalidTypeMessage(name, value, expectedTypes),
+          vm
+        );
+        return
+      }
+      var validator = prop.validator;
+      if (validator) {
+        if (!validator(value)) {
+          warn(
+            'Invalid prop: custom validator check failed for prop "' + name + '".',
+            vm
+          );
+        }
+      }
+    }
+  
+    var simpleCheckRE = /^(String|Number|Boolean|Function|Symbol)$/;
+  
+    function assertType (value, type) {
+      var valid;
+      var expectedType = getType(type);
+      if (simpleCheckRE.test(expectedType)) {
+        var t = typeof value;
+        valid = t === expectedType.toLowerCase();
+        // for primitive wrapper objects
+        if (!valid && t === 'object') {
+          valid = value instanceof type;
+        }
+      } else if (expectedType === 'Object') {
+        valid = isPlainObject(value);
+      } else if (expectedType === 'Array') {
+        valid = Array.isArray(value);
+      } else {
+        valid = value instanceof type;
+      }
+      return {
+        valid: valid,
+        expectedType: expectedType
+      }
+    }
+  
+    /**
+     * Use function string name to check built-in types,
+     * because a simple equality check will fail when running
+     * across different vms / iframes.
+     */
+    function getType (fn) {
+      var match = fn && fn.toString().match(/^\s*function (\w+)/);
+      return match ? match[1] : ''
+    }
+  
+    function isSameType (a, b) {
+      return getType(a) === getType(b)
+    }
+  
+    function getTypeIndex (type, expectedTypes) {
+      if (!Array.isArray(expectedTypes)) {
+        return isSameType(expectedTypes, type) ? 0 : -1
+      }
+      for (var i = 0, len = expectedTypes.length; i < len; i++) {
+        if (isSameType(expectedTypes[i], type)) {
+          return i
+        }
+      }
+      return -1
+    }
+  
+    function getInvalidTypeMessage (name, value, expectedTypes) {
+      var message = "Invalid prop: type check failed for prop \"" + name + "\"." +
+        " Expected " + (expectedTypes.map(capitalize).join(', '));
+      var expectedType = expectedTypes[0];
+      var receivedType = toRawType(value);
+      var expectedValue = styleValue(value, expectedType);
+      var receivedValue = styleValue(value, receivedType);
+      // check if we need to specify expected value
+      if (expectedTypes.length === 1 &&
+          isExplicable(expectedType) &&
+          !isBoolean(expectedType, receivedType)) {
+        message += " with value " + expectedValue;
+      }
+      message += ", got " + receivedType + " ";
+      // check if we need to specify received value
+      if (isExplicable(receivedType)) {
+        message += "with value " + receivedValue + ".";
+      }
+      return message
+    }
+  
+    function styleValue (value, type) {
+      if (type === 'String') {
+        return ("\"" + value + "\"")
+      } else if (type === 'Number') {
+        return ("" + (Number(value)))
+      } else {
+        return ("" + value)
+      }
+    }
+  
+    function isExplicable (value) {
+      var explicitTypes = ['string', 'number', 'boolean'];
+      return explicitTypes.some(function (elem) { return value.toLowerCase() === elem; })
+    }
+  
+    function isBoolean () {
+      var args = [], len = arguments.length;
+      while ( len-- ) args[ len ] = arguments[ len ];
+  
+      return args.some(function (elem) { return elem.toLowerCase() === 'boolean'; })
+    }
+  
+    /*  */
+  
+    function handleError (err, vm, info) {
+      // Deactivate deps tracking while processing error handler to avoid possible infinite rendering.
+      // See: https://github.com/vuejs/vuex/issues/1505
+      pushTarget();
+      try {
+        if (vm) {
+          var cur = vm;
+          while ((cur = cur.$parent)) {
+            var hooks = cur.$options.errorCaptured;
+            if (hooks) {
+              for (var i = 0; i < hooks.length; i++) {
+                try {
+                  var capture = hooks[i].call(cur, err, vm, info) === false;
+                  if (capture) { return }
+                } catch (e) {
+                  globalHandleError(e, cur, 'errorCaptured hook');
+                }
+              }
+            }
+          }
+        }
+        globalHandleError(err, vm, info);
+      } finally {
+        popTarget();
+      }
+    }
+  
+    function invokeWithErrorHandling (
+      handler,
+      context,
+      args,
+      vm,
+      info
+    ) {
+      var res;
+      try {
+        res = args ? handler.apply(context, args) : handler.call(context);
+        if (res && !res._isVue && isPromise(res) && !res._handled) {
+          res.catch(function (e) { return handleError(e, vm, info + " (Promise/async)"); });
+          // issue #9511
+          // avoid catch triggering multiple times when nested calls
+          res._handled = true;
+        }
+      } catch (e) {
+        handleError(e, vm, info);
+      }
+      return res
+    }
+  
+    function globalHandleError (err, vm, info) {
+      if (config.errorHandler) {
+        try {
+          return config.errorHandler.call(null, err, vm, info)
+        } catch (e) {
+          // if the user intentionally throws the original error in the handler,
+          // do not log it twice
+          if (e !== err) {
+            logError(e, null, 'config.errorHandler');
+          }
+        }
+      }
+      logError(err, vm, info);
+    }
+  
+    function logError (err, vm, info) {
+      {
+        warn(("Error in " + info + ": \"" + (err.toString()) + "\""), vm);
+      }
+      /* istanbul ignore else */
+      if ((inBrowser || inWeex) && typeof console !== 'undefined') {
+        console.error(err);
+      } else {
+        throw err
+      }
+    }
+  
+    /*  */
+  
+    var isUsingMicroTask = false;
+  
+    var callbacks = [];
+    var pending = false;
+  
+    function flushCallbacks () {
+      pending = false;
+      var copies = callbacks.slice(0);
+      callbacks.length = 0;
+      for (var i = 0; i < copies.length; i++) {
+        copies[i]();
+      }
+    }
+  
+    // Here we have async deferring wrappers using microtasks.
+    // In 2.5 we used (macro) tasks (in combination with microtasks).
+    // However, it has subtle problems when state is changed right before repaint
+    // (e.g. #6813, out-in transitions).
+    // Also, using (macro) tasks in event handler would cause some weird behaviors
+    // that cannot be circumvented (e.g. #7109, #7153, #7546, #7834, #8109).
+    // So we now use microtasks everywhere, again.
+    // A major drawback of this tradeoff is that there are some scenarios
+    // where microtasks have too high a priority and fire in between supposedly
+    // sequential events (e.g. #4521, #6690, which have workarounds)
+    // or even between bubbling of the same event (#6566).
+    var timerFunc;
+  
+    // The nextTick behavior leverages the microtask queue, which can be accessed
+    // via either native Promise.then or MutationObserver.
+    // MutationObserver has wider support, however it is seriously bugged in
+    // UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It
+    // completely stops working after triggering a few times... so, if native
+    // Promise is available, we will use it:
+    /* istanbul ignore next, $flow-disable-line */
+    if (typeof Promise !== 'undefined' && isNative(Promise)) {
+      var p = Promise.resolve();
+      timerFunc = function () {
+        p.then(flushCallbacks);
+        // In problematic UIWebViews, Promise.then doesn't completely break, but
+        // it can get stuck in a weird state where callbacks are pushed into the
+        // microtask queue but the queue isn't being flushed, until the browser
+        // needs to do some other work, e.g. handle a timer. Therefore we can
+        // "force" the microtask queue to be flushed by adding an empty timer.
+        if (isIOS) { setTimeout(noop); }
+      };
+      isUsingMicroTask = true;
+    } else if (!isIE && typeof MutationObserver !== 'undefined' && (
+      isNative(MutationObserver) ||
+      // PhantomJS and iOS 7.x
+      MutationObserver.toString() === '[object MutationObserverConstructor]'
+    )) {
+      // Use MutationObserver where native Promise is not available,
+      // e.g. PhantomJS, iOS7, Android 4.4
+      // (#6466 MutationObserver is unreliable in IE11)
+      var counter = 1;
+      var observer = new MutationObserver(flushCallbacks);
+      var textNode = document.createTextNode(String(counter));
+      observer.observe(textNode, {
+        characterData: true
+      });
+      timerFunc = function () {
+        counter = (counter + 1) % 2;
+        textNode.data = String(counter);
+      };
+      isUsingMicroTask = true;
+    } else if (typeof setImmediate !== 'undefined' && isNative(setImmediate)) {
+      // Fallback to setImmediate.
+      // Techinically it leverages the (macro) task queue,
+      // but it is still a better choice than setTimeout.
+      timerFunc = function () {
+        setImmediate(flushCallbacks);
+      };
+    } else {
+      // Fallback to setTimeout.
+      timerFunc = function () {
+        setTimeout(flushCallbacks, 0);
+      };
+    }
+  
+    function nextTick (cb, ctx) {
+      var _resolve;
+      callbacks.push(function () {
+        if (cb) {
+          try {
+            cb.call(ctx);
+          } catch (e) {
+            handleError(e, ctx, 'nextTick');
+          }
+        } else if (_resolve) {
+          _resolve(ctx);
+        }
+      });
+      if (!pending) {
+        pending = true;
+        timerFunc();
+      }
+      // $flow-disable-line
+      if (!cb && typeof Promise !== 'undefined') {
+        return new Promise(function (resolve) {
+          _resolve = resolve;
+        })
+      }
+    }
+  
+    /*  */
+  
+    var mark;
+    var measure;
+  
+    {
+      var perf = inBrowser && window.performance;
+      /* istanbul ignore if */
+      if (
+        perf &&
+        perf.mark &&
+        perf.measure &&
+        perf.clearMarks &&
+        perf.clearMeasures
+      ) {
+        mark = function (tag) { return perf.mark(tag); };
+        measure = function (name, startTag, endTag) {
+          perf.measure(name, startTag, endTag);
+          perf.clearMarks(startTag);
+          perf.clearMarks(endTag);
+          // perf.clearMeasures(name)
+        };
+      }
+    }
+  
+    /* not type checking this file because flow doesn't play well with Proxy */
+  
+    var initProxy;
+  
+    {
+      var allowedGlobals = makeMap(
+        'Infinity,undefined,NaN,isFinite,isNaN,' +
+        'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' +
+        'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,' +
+        'require' // for Webpack/Browserify
+      );
+  
+      var warnNonPresent = function (target, key) {
+        warn(
+          "Property or method \"" + key + "\" is not defined on the instance but " +
+          'referenced during render. Make sure that this property is reactive, ' +
+          'either in the data option, or for class-based components, by ' +
+          'initializing the property. ' +
+          'See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.',
+          target
+        );
+      };
+  
+      var warnReservedPrefix = function (target, key) {
+        warn(
+          "Property \"" + key + "\" must be accessed with \"$data." + key + "\" because " +
+          'properties starting with "$" or "_" are not proxied in the Vue instance to ' +
+          'prevent conflicts with Vue internals' +
+          'See: https://vuejs.org/v2/api/#data',
+          target
+        );
+      };
+  
+      var hasProxy =
+        typeof Proxy !== 'undefined' && isNative(Proxy);
+  
+      if (hasProxy) {
+        var isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta,exact');
+        config.keyCodes = new Proxy(config.keyCodes, {
+          set: function set (target, key, value) {
+            if (isBuiltInModifier(key)) {
+              warn(("Avoid overwriting built-in modifier in config.keyCodes: ." + key));
+              return false
+            } else {
+              target[key] = value;
+              return true
+            }
+          }
+        });
+      }
+  
+      var hasHandler = {
+        has: function has (target, key) {
+          var has = key in target;
+          var isAllowed = allowedGlobals(key) ||
+            (typeof key === 'string' && key.charAt(0) === '_' && !(key in target.$data));
+          if (!has && !isAllowed) {
+            if (key in target.$data) { warnReservedPrefix(target, key); }
+            else { warnNonPresent(target, key); }
+          }
+          return has || !isAllowed
+        }
+      };
+  
+      var getHandler = {
+        get: function get (target, key) {
+          if (typeof key === 'string' && !(key in target)) {
+            if (key in target.$data) { warnReservedPrefix(target, key); }
+            else { warnNonPresent(target, key); }
+          }
+          return target[key]
+        }
+      };
+  
+      initProxy = function initProxy (vm) {
+        if (hasProxy) {
+          // determine which proxy handler to use
+          var options = vm.$options;
+          var handlers = options.render && options.render._withStripped
+            ? getHandler
+            : hasHandler;
+          vm._renderProxy = new Proxy(vm, handlers);
+        } else {
+          vm._renderProxy = vm;
+        }
+      };
+    }
+  
+    /*  */
+  
+    var seenObjects = new _Set();
+  
+    /**
+     * Recursively traverse an object to evoke all converted
+     * getters, so that every nested property inside the object
+     * is collected as a "deep" dependency.
+     */
+    function traverse (val) {
+      _traverse(val, seenObjects);
+      seenObjects.clear();
+    }
+  
+    function _traverse (val, seen) {
+      var i, keys;
+      var isA = Array.isArray(val);
+      if ((!isA && !isObject(val)) || Object.isFrozen(val) || val instanceof VNode) {
+        return
+      }
+      if (val.__ob__) {
+        var depId = val.__ob__.dep.id;
+        if (seen.has(depId)) {
+          return
+        }
+        seen.add(depId);
+      }
+      if (isA) {
+        i = val.length;
+        while (i--) { _traverse(val[i], seen); }
+      } else {
+        keys = Object.keys(val);
+        i = keys.length;
+        while (i--) { _traverse(val[keys[i]], seen); }
+      }
+    }
+  
+    /*  */
+  
+    var normalizeEvent = cached(function (name) {
+      var passive = name.charAt(0) === '&';
+      name = passive ? name.slice(1) : name;
+      var once$$1 = name.charAt(0) === '~'; // Prefixed last, checked first
+      name = once$$1 ? name.slice(1) : name;
+      var capture = name.charAt(0) === '!';
+      name = capture ? name.slice(1) : name;
+      return {
+        name: name,
+        once: once$$1,
+        capture: capture,
+        passive: passive
+      }
+    });
+  
+    function createFnInvoker (fns, vm) {
+      function invoker () {
+        var arguments$1 = arguments;
+  
+        var fns = invoker.fns;
+        if (Array.isArray(fns)) {
+          var cloned = fns.slice();
+          for (var i = 0; i < cloned.length; i++) {
+            invokeWithErrorHandling(cloned[i], null, arguments$1, vm, "v-on handler");
+          }
+        } else {
+          // return handler return value for single handlers
+          return invokeWithErrorHandling(fns, null, arguments, vm, "v-on handler")
+        }
+      }
+      invoker.fns = fns;
+      return invoker
+    }
+  
+    function updateListeners (
+      on,
+      oldOn,
+      add,
+      remove$$1,
+      createOnceHandler,
+      vm
+    ) {
+      var name, def$$1, cur, old, event;
+      for (name in on) {
+        def$$1 = cur = on[name];
+        old = oldOn[name];
+        event = normalizeEvent(name);
+        if (isUndef(cur)) {
+          warn(
+            "Invalid handler for event \"" + (event.name) + "\": got " + String(cur),
+            vm
+          );
+        } else if (isUndef(old)) {
+          if (isUndef(cur.fns)) {
+            cur = on[name] = createFnInvoker(cur, vm);
+          }
+          if (isTrue(event.once)) {
+            cur = on[name] = createOnceHandler(event.name, cur, event.capture);
+          }
+          add(event.name, cur, event.capture, event.passive, event.params);
+        } else if (cur !== old) {
+          old.fns = cur;
+          on[name] = old;
+        }
+      }
+      for (name in oldOn) {
+        if (isUndef(on[name])) {
+          event = normalizeEvent(name);
+          remove$$1(event.name, oldOn[name], event.capture);
+        }
+      }
+    }
+  
+    /*  */
+  
+    function mergeVNodeHook (def, hookKey, hook) {
+      if (def instanceof VNode) {
+        def = def.data.hook || (def.data.hook = {});
+      }
+      var invoker;
+      var oldHook = def[hookKey];
+  
+      function wrappedHook () {
+        hook.apply(this, arguments);
+        // important: remove merged hook to ensure it's called only once
+        // and prevent memory leak
+        remove(invoker.fns, wrappedHook);
+      }
+  
+      if (isUndef(oldHook)) {
+        // no existing hook
+        invoker = createFnInvoker([wrappedHook]);
+      } else {
+        /* istanbul ignore if */
+        if (isDef(oldHook.fns) && isTrue(oldHook.merged)) {
+          // already a merged invoker
+          invoker = oldHook;
+          invoker.fns.push(wrappedHook);
+        } else {
+          // existing plain hook
+          invoker = createFnInvoker([oldHook, wrappedHook]);
+        }
+      }
+  
+      invoker.merged = true;
+      def[hookKey] = invoker;
+    }
+  
+    /*  */
+  
+    function extractPropsFromVNodeData (
+      data,
+      Ctor,
+      tag
+    ) {
+      // we are only extracting raw values here.
+      // validation and default values are handled in the child
+      // component itself.
+      var propOptions = Ctor.options.props;
+      if (isUndef(propOptions)) {
+        return
+      }
+      var res = {};
+      var attrs = data.attrs;
+      var props = data.props;
+      if (isDef(attrs) || isDef(props)) {
+        for (var key in propOptions) {
+          var altKey = hyphenate(key);
+          {
+            var keyInLowerCase = key.toLowerCase();
+            if (
+              key !== keyInLowerCase &&
+              attrs && hasOwn(attrs, keyInLowerCase)
+            ) {
+              tip(
+                "Prop \"" + keyInLowerCase + "\" is passed to component " +
+                (formatComponentName(tag || Ctor)) + ", but the declared prop name is" +
+                " \"" + key + "\". " +
+                "Note that HTML attributes are case-insensitive and camelCased " +
+                "props need to use their kebab-case equivalents when using in-DOM " +
+                "templates. You should probably use \"" + altKey + "\" instead of \"" + key + "\"."
+              );
+            }
+          }
+          checkProp(res, props, key, altKey, true) ||
+          checkProp(res, attrs, key, altKey, false);
+        }
+      }
+      return res
+    }
+  
+    function checkProp (
+      res,
+      hash,
+      key,
+      altKey,
+      preserve
+    ) {
+      if (isDef(hash)) {
+        if (hasOwn(hash, key)) {
+          res[key] = hash[key];
+          if (!preserve) {
+            delete hash[key];
+          }
+          return true
+        } else if (hasOwn(hash, altKey)) {
+          res[key] = hash[altKey];
+          if (!preserve) {
+            delete hash[altKey];
+          }
+          return true
+        }
+      }
+      return false
+    }
+  
+    /*  */
+  
+    // The template compiler attempts to minimize the need for normalization by
+    // statically analyzing the template at compile time.
+    //
+    // For plain HTML markup, normalization can be completely skipped because the
+    // generated render function is guaranteed to return Array<VNode>. There are
+    // two cases where extra normalization is needed:
+  
+    // 1. When the children contains components - because a functional component
+    // may return an Array instead of a single root. In this case, just a simple
+    // normalization is needed - if any child is an Array, we flatten the whole
+    // thing with Array.prototype.concat. It is guaranteed to be only 1-level deep
+    // because functional components already normalize their own children.
+    function simpleNormalizeChildren (children) {
+      for (var i = 0; i < children.length; i++) {
+        if (Array.isArray(children[i])) {
+          return Array.prototype.concat.apply([], children)
+        }
+      }
+      return children
+    }
+  
+    // 2. When the children contains constructs that always generated nested Arrays,
+    // e.g. <template>, <slot>, v-for, or when the children is provided by user
+    // with hand-written render functions / JSX. In such cases a full normalization
+    // is needed to cater to all possible types of children values.
+    function normalizeChildren (children) {
+      return isPrimitive(children)
+        ? [createTextVNode(children)]
+        : Array.isArray(children)
+          ? normalizeArrayChildren(children)
+          : undefined
+    }
+  
+    function isTextNode (node) {
+      return isDef(node) && isDef(node.text) && isFalse(node.isComment)
+    }
+  
+    function normalizeArrayChildren (children, nestedIndex) {
+      var res = [];
+      var i, c, lastIndex, last;
+      for (i = 0; i < children.length; i++) {
+        c = children[i];
+        if (isUndef(c) || typeof c === 'boolean') { continue }
+        lastIndex = res.length - 1;
+        last = res[lastIndex];
+        //  nested
+        if (Array.isArray(c)) {
+          if (c.length > 0) {
+            c = normalizeArrayChildren(c, ((nestedIndex || '') + "_" + i));
+            // merge adjacent text nodes
+            if (isTextNode(c[0]) && isTextNode(last)) {
+              res[lastIndex] = createTextVNode(last.text + (c[0]).text);
+              c.shift();
+            }
+            res.push.apply(res, c);
+          }
+        } else if (isPrimitive(c)) {
+          if (isTextNode(last)) {
+            // merge adjacent text nodes
+            // this is necessary for SSR hydration because text nodes are
+            // essentially merged when rendered to HTML strings
+            res[lastIndex] = createTextVNode(last.text + c);
+          } else if (c !== '') {
+            // convert primitive to vnode
+            res.push(createTextVNode(c));
+          }
+        } else {
+          if (isTextNode(c) && isTextNode(last)) {
+            // merge adjacent text nodes
+            res[lastIndex] = createTextVNode(last.text + c.text);
+          } else {
+            // default key for nested array children (likely generated by v-for)
+            if (isTrue(children._isVList) &&
+              isDef(c.tag) &&
+              isUndef(c.key) &&
+              isDef(nestedIndex)) {
+              c.key = "__vlist" + nestedIndex + "_" + i + "__";
+            }
+            res.push(c);
+          }
+        }
+      }
+      return res
+    }
+  
+    /*  */
+  
+    function initProvide (vm) {
+      var provide = vm.$options.provide;
+      if (provide) {
+        vm._provided = typeof provide === 'function'
+          ? provide.call(vm)
+          : provide;
+      }
+    }
+  
+    function initInjections (vm) {
+      var result = resolveInject(vm.$options.inject, vm);
+      if (result) {
+        toggleObserving(false);
+        Object.keys(result).forEach(function (key) {
+          /* istanbul ignore else */
+          {
+            defineReactive$$1(vm, key, result[key], function () {
+              warn(
+                "Avoid mutating an injected value directly since the changes will be " +
+                "overwritten whenever the provided component re-renders. " +
+                "injection being mutated: \"" + key + "\"",
+                vm
+              );
+            });
+          }
+        });
+        toggleObserving(true);
+      }
+    }
+  
+    function resolveInject (inject, vm) {
+      if (inject) {
+        // inject is :any because flow is not smart enough to figure out cached
+        var result = Object.create(null);
+        var keys = hasSymbol
+          ? Reflect.ownKeys(inject)
+          : Object.keys(inject);
+  
+        for (var i = 0; i < keys.length; i++) {
+          var key = keys[i];
+          // #6574 in case the inject object is observed...
+          if (key === '__ob__') { continue }
+          var provideKey = inject[key].from;
+          var source = vm;
+          while (source) {
+            if (source._provided && hasOwn(source._provided, provideKey)) {
+              result[key] = source._provided[provideKey];
+              break
+            }
+            source = source.$parent;
+          }
+          if (!source) {
+            if ('default' in inject[key]) {
+              var provideDefault = inject[key].default;
+              result[key] = typeof provideDefault === 'function'
+                ? provideDefault.call(vm)
+                : provideDefault;
+            } else {
+              warn(("Injection \"" + key + "\" not found"), vm);
+            }
+          }
+        }
+        return result
+      }
+    }
+  
+    /*  */
+  
+  
+  
+    /**
+     * Runtime helper for resolving raw children VNodes into a slot object.
+     */
+    function resolveSlots (
+      children,
+      context
+    ) {
+      if (!children || !children.length) {
+        return {}
+      }
+      var slots = {};
+      for (var i = 0, l = children.length; i < l; i++) {
+        var child = children[i];
+        var data = child.data;
+        // remove slot attribute if the node is resolved as a Vue slot node
+        if (data && data.attrs && data.attrs.slot) {
+          delete data.attrs.slot;
+        }
+        // named slots should only be respected if the vnode was rendered in the
+        // same context.
+        if ((child.context === context || child.fnContext === context) &&
+          data && data.slot != null
+        ) {
+          var name = data.slot;
+          var slot = (slots[name] || (slots[name] = []));
+          if (child.tag === 'template') {
+            slot.push.apply(slot, child.children || []);
+          } else {
+            slot.push(child);
+          }
+        } else {
+          (slots.default || (slots.default = [])).push(child);
+        }
+      }
+      // ignore slots that contains only whitespace
+      for (var name$1 in slots) {
+        if (slots[name$1].every(isWhitespace)) {
+          delete slots[name$1];
+        }
+      }
+      return slots
+    }
+  
+    function isWhitespace (node) {
+      return (node.isComment && !node.asyncFactory) || node.text === ' '
+    }
+  
+    /*  */
+  
+    function normalizeScopedSlots (
+      slots,
+      normalSlots,
+      prevSlots
+    ) {
+      var res;
+      var hasNormalSlots = Object.keys(normalSlots).length > 0;
+      var isStable = slots ? !!slots.$stable : !hasNormalSlots;
+      var key = slots && slots.$key;
+      if (!slots) {
+        res = {};
+      } else if (slots._normalized) {
+        // fast path 1: child component re-render only, parent did not change
+        return slots._normalized
+      } else if (
+        isStable &&
+        prevSlots &&
+        prevSlots !== emptyObject &&
+        key === prevSlots.$key &&
+        !hasNormalSlots &&
+        !prevSlots.$hasNormal
+      ) {
+        // fast path 2: stable scoped slots w/ no normal slots to proxy,
+        // only need to normalize once
+        return prevSlots
+      } else {
+        res = {};
+        for (var key$1 in slots) {
+          if (slots[key$1] && key$1[0] !== '$') {
+            res[key$1] = normalizeScopedSlot(normalSlots, key$1, slots[key$1]);
+          }
+        }
+      }
+      // expose normal slots on scopedSlots
+      for (var key$2 in normalSlots) {
+        if (!(key$2 in res)) {
+          res[key$2] = proxyNormalSlot(normalSlots, key$2);
+        }
+      }
+      // avoriaz seems to mock a non-extensible $scopedSlots object
+      // and when that is passed down this would cause an error
+      if (slots && Object.isExtensible(slots)) {
+        (slots)._normalized = res;
+      }
+      def(res, '$stable', isStable);
+      def(res, '$key', key);
+      def(res, '$hasNormal', hasNormalSlots);
+      return res
+    }
+  
+    function normalizeScopedSlot(normalSlots, key, fn) {
+      var normalized = function () {
+        var res = arguments.length ? fn.apply(null, arguments) : fn({});
+        res = res && typeof res === 'object' && !Array.isArray(res)
+          ? [res] // single vnode
+          : normalizeChildren(res);
+        return res && (
+          res.length === 0 ||
+          (res.length === 1 && res[0].isComment) // #9658
+        ) ? undefined
+          : res
+      };
+      // this is a slot using the new v-slot syntax without scope. although it is
+      // compiled as a scoped slot, render fn users would expect it to be present
+      // on this.$slots because the usage is semantically a normal slot.
+      if (fn.proxy) {
+        Object.defineProperty(normalSlots, key, {
+          get: normalized,
+          enumerable: true,
+          configurable: true
+        });
+      }
+      return normalized
+    }
+  
+    function proxyNormalSlot(slots, key) {
+      return function () { return slots[key]; }
+    }
+  
+    /*  */
+  
+    /**
+     * Runtime helper for rendering v-for lists.
+     */
+    function renderList (
+      val,
+      render
+    ) {
+      var ret, i, l, keys, key;
+      if (Array.isArray(val) || typeof val === 'string') {
+        ret = new Array(val.length);
+        for (i = 0, l = val.length; i < l; i++) {
+          ret[i] = render(val[i], i);
+        }
+      } else if (typeof val === 'number') {
+        ret = new Array(val);
+        for (i = 0; i < val; i++) {
+          ret[i] = render(i + 1, i);
+        }
+      } else if (isObject(val)) {
+        if (hasSymbol && val[Symbol.iterator]) {
+          ret = [];
+          var iterator = val[Symbol.iterator]();
+          var result = iterator.next();
+          while (!result.done) {
+            ret.push(render(result.value, ret.length));
+            result = iterator.next();
+          }
+        } else {
+          keys = Object.keys(val);
+          ret = new Array(keys.length);
+          for (i = 0, l = keys.length; i < l; i++) {
+            key = keys[i];
+            ret[i] = render(val[key], key, i);
+          }
+        }
+      }
+      if (!isDef(ret)) {
+        ret = [];
+      }
+      (ret)._isVList = true;
+      return ret
+    }
+  
+    /*  */
+  
+    /**
+     * Runtime helper for rendering <slot>
+     */
+    function renderSlot (
+      name,
+      fallback,
+      props,
+      bindObject
+    ) {
+      var scopedSlotFn = this.$scopedSlots[name];
+      var nodes;
+      if (scopedSlotFn) { // scoped slot
+        props = props || {};
+        if (bindObject) {
+          if (!isObject(bindObject)) {
+            warn(
+              'slot v-bind without argument expects an Object',
+              this
+            );
+          }
+          props = extend(extend({}, bindObject), props);
+        }
+        nodes = scopedSlotFn(props) || fallback;
+      } else {
+        nodes = this.$slots[name] || fallback;
+      }
+  
+      var target = props && props.slot;
+      if (target) {
+        return this.$createElement('template', { slot: target }, nodes)
+      } else {
+        return nodes
+      }
+    }
+  
+    /*  */
+  
+    /**
+     * Runtime helper for resolving filters
+     */
+    function resolveFilter (id) {
+      return resolveAsset(this.$options, 'filters', id, true) || identity
+    }
+  
+    /*  */
+  
+    function isKeyNotMatch (expect, actual) {
+      if (Array.isArray(expect)) {
+        return expect.indexOf(actual) === -1
+      } else {
+        return expect !== actual
+      }
+    }
+  
+    /**
+     * Runtime helper for checking keyCodes from config.
+     * exposed as Vue.prototype._k
+     * passing in eventKeyName as last argument separately for backwards compat
+     */
+    function checkKeyCodes (
+      eventKeyCode,
+      key,
+      builtInKeyCode,
+      eventKeyName,
+      builtInKeyName
+    ) {
+      var mappedKeyCode = config.keyCodes[key] || builtInKeyCode;
+      if (builtInKeyName && eventKeyName && !config.keyCodes[key]) {
+        return isKeyNotMatch(builtInKeyName, eventKeyName)
+      } else if (mappedKeyCode) {
+        return isKeyNotMatch(mappedKeyCode, eventKeyCode)
+      } else if (eventKeyName) {
+        return hyphenate(eventKeyName) !== key
+      }
+    }
+  
+    /*  */
+  
+    /**
+     * Runtime helper for merging v-bind="object" into a VNode's data.
+     */
+    function bindObjectProps (
+      data,
+      tag,
+      value,
+      asProp,
+      isSync
+    ) {
+      if (value) {
+        if (!isObject(value)) {
+          warn(
+            'v-bind without argument expects an Object or Array value',
+            this
+          );
+        } else {
+          if (Array.isArray(value)) {
+            value = toObject(value);
+          }
+          var hash;
+          var loop = function ( key ) {
+            if (
+              key === 'class' ||
+              key === 'style' ||
+              isReservedAttribute(key)
+            ) {
+              hash = data;
+            } else {
+              var type = data.attrs && data.attrs.type;
+              hash = asProp || config.mustUseProp(tag, type, key)
+                ? data.domProps || (data.domProps = {})
+                : data.attrs || (data.attrs = {});
+            }
+            var camelizedKey = camelize(key);
+            var hyphenatedKey = hyphenate(key);
+            if (!(camelizedKey in hash) && !(hyphenatedKey in hash)) {
+              hash[key] = value[key];
+  
+              if (isSync) {
+                var on = data.on || (data.on = {});
+                on[("update:" + key)] = function ($event) {
+                  value[key] = $event;
+                };
+              }
+            }
+          };
+  
+          for (var key in value) loop( key );
+        }
+      }
+      return data
+    }
+  
+    /*  */
+  
+    /**
+     * Runtime helper for rendering static trees.
+     */
+    function renderStatic (
+      index,
+      isInFor
+    ) {
+      var cached = this._staticTrees || (this._staticTrees = []);
+      var tree = cached[index];
+      // if has already-rendered static tree and not inside v-for,
+      // we can reuse the same tree.
+      if (tree && !isInFor) {
+        return tree
+      }
+      // otherwise, render a fresh tree.
+      tree = cached[index] = this.$options.staticRenderFns[index].call(
+        this._renderProxy,
+        null,
+        this // for render fns generated for functional component templates
+      );
+      markStatic(tree, ("__static__" + index), false);
+      return tree
+    }
+  
+    /**
+     * Runtime helper for v-once.
+     * Effectively it means marking the node as static with a unique key.
+     */
+    function markOnce (
+      tree,
+      index,
+      key
+    ) {
+      markStatic(tree, ("__once__" + index + (key ? ("_" + key) : "")), true);
+      return tree
+    }
+  
+    function markStatic (
+      tree,
+      key,
+      isOnce
+    ) {
+      if (Array.isArray(tree)) {
+        for (var i = 0; i < tree.length; i++) {
+          if (tree[i] && typeof tree[i] !== 'string') {
+            markStaticNode(tree[i], (key + "_" + i), isOnce);
+          }
+        }
+      } else {
+        markStaticNode(tree, key, isOnce);
+      }
+    }
+  
+    function markStaticNode (node, key, isOnce) {
+      node.isStatic = true;
+      node.key = key;
+      node.isOnce = isOnce;
+    }
+  
+    /*  */
+  
+    function bindObjectListeners (data, value) {
+      if (value) {
+        if (!isPlainObject(value)) {
+          warn(
+            'v-on without argument expects an Object value',
+            this
+          );
+        } else {
+          var on = data.on = data.on ? extend({}, data.on) : {};
+          for (var key in value) {
+            var existing = on[key];
+            var ours = value[key];
+            on[key] = existing ? [].concat(existing, ours) : ours;
+          }
+        }
+      }
+      return data
+    }
+  
+    /*  */
+  
+    function resolveScopedSlots (
+      fns, // see flow/vnode
+      res,
+      // the following are added in 2.6
+      hasDynamicKeys,
+      contentHashKey
+    ) {
+      res = res || { $stable: !hasDynamicKeys };
+      for (var i = 0; i < fns.length; i++) {
+        var slot = fns[i];
+        if (Array.isArray(slot)) {
+          resolveScopedSlots(slot, res, hasDynamicKeys);
+        } else if (slot) {
+          // marker for reverse proxying v-slot without scope on this.$slots
+          if (slot.proxy) {
+            slot.fn.proxy = true;
+          }
+          res[slot.key] = slot.fn;
+        }
+      }
+      if (contentHashKey) {
+        (res).$key = contentHashKey;
+      }
+      return res
+    }
+  
+    /*  */
+  
+    function bindDynamicKeys (baseObj, values) {
+      for (var i = 0; i < values.length; i += 2) {
+        var key = values[i];
+        if (typeof key === 'string' && key) {
+          baseObj[values[i]] = values[i + 1];
+        } else if (key !== '' && key !== null) {
+          // null is a speical value for explicitly removing a binding
+          warn(
+            ("Invalid value for dynamic directive argument (expected string or null): " + key),
+            this
+          );
+        }
+      }
+      return baseObj
+    }
+  
+    // helper to dynamically append modifier runtime markers to event names.
+    // ensure only append when value is already string, otherwise it will be cast
+    // to string and cause the type check to miss.
+    function prependModifier (value, symbol) {
+      return typeof value === 'string' ? symbol + value : value
+    }
+  
+    /*  */
+  
+    function installRenderHelpers (target) {
+      target._o = markOnce;
+      target._n = toNumber;
+      target._s = toString;
+      target._l = renderList;
+      target._t = renderSlot;
+      target._q = looseEqual;
+      target._i = looseIndexOf;
+      target._m = renderStatic;
+      target._f = resolveFilter;
+      target._k = checkKeyCodes;
+      target._b = bindObjectProps;
+      target._v = createTextVNode;
+      target._e = createEmptyVNode;
+      target._u = resolveScopedSlots;
+      target._g = bindObjectListeners;
+      target._d = bindDynamicKeys;
+      target._p = prependModifier;
+    }
+  
+    /*  */
+  
+    function FunctionalRenderContext (
+      data,
+      props,
+      children,
+      parent,
+      Ctor
+    ) {
+      var this$1 = this;
+  
+      var options = Ctor.options;
+      // ensure the createElement function in functional components
+      // gets a unique context - this is necessary for correct named slot check
+      var contextVm;
+      if (hasOwn(parent, '_uid')) {
+        contextVm = Object.create(parent);
+        // $flow-disable-line
+        contextVm._original = parent;
+      } else {
+        // the context vm passed in is a functional context as well.
+        // in this case we want to make sure we are able to get a hold to the
+        // real context instance.
+        contextVm = parent;
+        // $flow-disable-line
+        parent = parent._original;
+      }
+      var isCompiled = isTrue(options._compiled);
+      var needNormalization = !isCompiled;
+  
+      this.data = data;
+      this.props = props;
+      this.children = children;
+      this.parent = parent;
+      this.listeners = data.on || emptyObject;
+      this.injections = resolveInject(options.inject, parent);
+      this.slots = function () {
+        if (!this$1.$slots) {
+          normalizeScopedSlots(
+            data.scopedSlots,
+            this$1.$slots = resolveSlots(children, parent)
+          );
+        }
+        return this$1.$slots
+      };
+  
+      Object.defineProperty(this, 'scopedSlots', ({
+        enumerable: true,
+        get: function get () {
+          return normalizeScopedSlots(data.scopedSlots, this.slots())
+        }
+      }));
+  
+      // support for compiled functional template
+      if (isCompiled) {
+        // exposing $options for renderStatic()
+        this.$options = options;
+        // pre-resolve slots for renderSlot()
+        this.$slots = this.slots();
+        this.$scopedSlots = normalizeScopedSlots(data.scopedSlots, this.$slots);
+      }
+  
+      if (options._scopeId) {
+        this._c = function (a, b, c, d) {
+          var vnode = createElement(contextVm, a, b, c, d, needNormalization);
+          if (vnode && !Array.isArray(vnode)) {
+            vnode.fnScopeId = options._scopeId;
+            vnode.fnContext = parent;
+          }
+          return vnode
+        };
+      } else {
+        this._c = function (a, b, c, d) { return createElement(contextVm, a, b, c, d, needNormalization); };
+      }
+    }
+  
+    installRenderHelpers(FunctionalRenderContext.prototype);
+  
+    function createFunctionalComponent (
+      Ctor,
+      propsData,
+      data,
+      contextVm,
+      children
+    ) {
+      var options = Ctor.options;
+      var props = {};
+      var propOptions = options.props;
+      if (isDef(propOptions)) {
+        for (var key in propOptions) {
+          props[key] = validateProp(key, propOptions, propsData || emptyObject);
+        }
+      } else {
+        if (isDef(data.attrs)) { mergeProps(props, data.attrs); }
+        if (isDef(data.props)) { mergeProps(props, data.props); }
+      }
+  
+      var renderContext = new FunctionalRenderContext(
+        data,
+        props,
+        children,
+        contextVm,
+        Ctor
+      );
+  
+      var vnode = options.render.call(null, renderContext._c, renderContext);
+  
+      if (vnode instanceof VNode) {
+        return cloneAndMarkFunctionalResult(vnode, data, renderContext.parent, options, renderContext)
+      } else if (Array.isArray(vnode)) {
+        var vnodes = normalizeChildren(vnode) || [];
+        var res = new Array(vnodes.length);
+        for (var i = 0; i < vnodes.length; i++) {
+          res[i] = cloneAndMarkFunctionalResult(vnodes[i], data, renderContext.parent, options, renderContext);
+        }
+        return res
+      }
+    }
+  
+    function cloneAndMarkFunctionalResult (vnode, data, contextVm, options, renderContext) {
+      // #7817 clone node before setting fnContext, otherwise if the node is reused
+      // (e.g. it was from a cached normal slot) the fnContext causes named slots
+      // that should not be matched to match.
+      var clone = cloneVNode(vnode);
+      clone.fnContext = contextVm;
+      clone.fnOptions = options;
+      {
+        (clone.devtoolsMeta = clone.devtoolsMeta || {}).renderContext = renderContext;
+      }
+      if (data.slot) {
+        (clone.data || (clone.data = {})).slot = data.slot;
+      }
+      return clone
+    }
+  
+    function mergeProps (to, from) {
+      for (var key in from) {
+        to[camelize(key)] = from[key];
+      }
+    }
+  
+    /*  */
+  
+    /*  */
+  
+    /*  */
+  
+    /*  */
+  
+    // inline hooks to be invoked on component VNodes during patch
+    var componentVNodeHooks = {
+      init: function init (vnode, hydrating) {
+        if (
+          vnode.componentInstance &&
+          !vnode.componentInstance._isDestroyed &&
+          vnode.data.keepAlive
+        ) {
+          // kept-alive components, treat as a patch
+          var mountedNode = vnode; // work around flow
+          componentVNodeHooks.prepatch(mountedNode, mountedNode);
+        } else {
+          var child = vnode.componentInstance = createComponentInstanceForVnode(
+            vnode,
+            activeInstance
+          );
+          child.$mount(hydrating ? vnode.elm : undefined, hydrating);
+        }
+      },
+  
+      prepatch: function prepatch (oldVnode, vnode) {
+        var options = vnode.componentOptions;
+        var child = vnode.componentInstance = oldVnode.componentInstance;
+        updateChildComponent(
+          child,
+          options.propsData, // updated props
+          options.listeners, // updated listeners
+          vnode, // new parent vnode
+          options.children // new children
+        );
+      },
+  
+      insert: function insert (vnode) {
+        var context = vnode.context;
+        var componentInstance = vnode.componentInstance;
+        if (!componentInstance._isMounted) {
+          componentInstance._isMounted = true;
+          callHook(componentInstance, 'mounted');
+        }
+        if (vnode.data.keepAlive) {
+          if (context._isMounted) {
+            // vue-router#1212
+            // During updates, a kept-alive component's child components may
+            // change, so directly walking the tree here may call activated hooks
+            // on incorrect children. Instead we push them into a queue which will
+            // be processed after the whole patch process ended.
+            queueActivatedComponent(componentInstance);
+          } else {
+            activateChildComponent(componentInstance, true /* direct */);
+          }
+        }
+      },
+  
+      destroy: function destroy (vnode) {
+        var componentInstance = vnode.componentInstance;
+        if (!componentInstance._isDestroyed) {
+          if (!vnode.data.keepAlive) {
+            componentInstance.$destroy();
+          } else {
+            deactivateChildComponent(componentInstance, true /* direct */);
+          }
+        }
+      }
+    };
+  
+    var hooksToMerge = Object.keys(componentVNodeHooks);
+  
+    function createComponent (
+      Ctor,
+      data,
+      context,
+      children,
+      tag
+    ) {
+      if (isUndef(Ctor)) {
+        return
+      }
+  
+      var baseCtor = context.$options._base;
+  
+      // plain options object: turn it into a constructor
+      if (isObject(Ctor)) {
+        Ctor = baseCtor.extend(Ctor);
+      }
+  
+      // if at this stage it's not a constructor or an async component factory,
+      // reject.
+      if (typeof Ctor !== 'function') {
+        {
+          warn(("Invalid Component definition: " + (String(Ctor))), context);
+        }
+        return
+      }
+  
+      // async component
+      var asyncFactory;
+      if (isUndef(Ctor.cid)) {
+        asyncFactory = Ctor;
+        Ctor = resolveAsyncComponent(asyncFactory, baseCtor);
+        if (Ctor === undefined) {
+          // return a placeholder node for async component, which is rendered
+          // as a comment node but preserves all the raw information for the node.
+          // the information will be used for async server-rendering and hydration.
+          return createAsyncPlaceholder(
+            asyncFactory,
+            data,
+            context,
+            children,
+            tag
+          )
+        }
+      }
+  
+      data = data || {};
+  
+      // resolve constructor options in case global mixins are applied after
+      // component constructor creation
+      resolveConstructorOptions(Ctor);
+  
+      // transform component v-model data into props & events
+      if (isDef(data.model)) {
+        transformModel(Ctor.options, data);
+      }
+  
+      // extract props
+      var propsData = extractPropsFromVNodeData(data, Ctor, tag);
+  
+      // functional component
+      if (isTrue(Ctor.options.functional)) {
+        return createFunctionalComponent(Ctor, propsData, data, context, children)
+      }
+  
+      // extract listeners, since these needs to be treated as
+      // child component listeners instead of DOM listeners
+      var listeners = data.on;
+      // replace with listeners with .native modifier
+      // so it gets processed during parent component patch.
+      data.on = data.nativeOn;
+  
+      if (isTrue(Ctor.options.abstract)) {
+        // abstract components do not keep anything
+        // other than props & listeners & slot
+  
+        // work around flow
+        var slot = data.slot;
+        data = {};
+        if (slot) {
+          data.slot = slot;
+        }
+      }
+  
+      // install component management hooks onto the placeholder node
+      installComponentHooks(data);
+  
+      // return a placeholder vnode
+      var name = Ctor.options.name || tag;
+      var vnode = new VNode(
+        ("vue-component-" + (Ctor.cid) + (name ? ("-" + name) : '')),
+        data, undefined, undefined, undefined, context,
+        { Ctor: Ctor, propsData: propsData, listeners: listeners, tag: tag, children: children },
+        asyncFactory
+      );
+  
+      return vnode
+    }
+  
+    function createComponentInstanceForVnode (
+      vnode, // we know it's MountedComponentVNode but flow doesn't
+      parent // activeInstance in lifecycle state
+    ) {
+      var options = {
+        _isComponent: true,
+        _parentVnode: vnode,
+        parent: parent
+      };
+      // check inline-template render functions
+      var inlineTemplate = vnode.data.inlineTemplate;
+      if (isDef(inlineTemplate)) {
+        options.render = inlineTemplate.render;
+        options.staticRenderFns = inlineTemplate.staticRenderFns;
+      }
+      return new vnode.componentOptions.Ctor(options)
+    }
+  
+    function installComponentHooks (data) {
+      var hooks = data.hook || (data.hook = {});
+      for (var i = 0; i < hooksToMerge.length; i++) {
+        var key = hooksToMerge[i];
+        var existing = hooks[key];
+        var toMerge = componentVNodeHooks[key];
+        if (existing !== toMerge && !(existing && existing._merged)) {
+          hooks[key] = existing ? mergeHook$1(toMerge, existing) : toMerge;
+        }
+      }
+    }
+  
+    function mergeHook$1 (f1, f2) {
+      var merged = function (a, b) {
+        // flow complains about extra args which is why we use any
+        f1(a, b);
+        f2(a, b);
+      };
+      merged._merged = true;
+      return merged
+    }
+  
+    // transform component v-model info (value and callback) into
+    // prop and event handler respectively.
+    function transformModel (options, data) {
+      var prop = (options.model && options.model.prop) || 'value';
+      var event = (options.model && options.model.event) || 'input'
+      ;(data.attrs || (data.attrs = {}))[prop] = data.model.value;
+      var on = data.on || (data.on = {});
+      var existing = on[event];
+      var callback = data.model.callback;
+      if (isDef(existing)) {
+        if (
+          Array.isArray(existing)
+            ? existing.indexOf(callback) === -1
+            : existing !== callback
+        ) {
+          on[event] = [callback].concat(existing);
+        }
+      } else {
+        on[event] = callback;
+      }
+    }
+  
+    /*  */
+  
+    var SIMPLE_NORMALIZE = 1;
+    var ALWAYS_NORMALIZE = 2;
+  
+    // wrapper function for providing a more flexible interface
+    // without getting yelled at by flow
+    function createElement (
+      context,
+      tag,
+      data,
+      children,
+      normalizationType,
+      alwaysNormalize
+    ) {
+      if (Array.isArray(data) || isPrimitive(data)) {
+        normalizationType = children;
+        children = data;
+        data = undefined;
+      }
+      if (isTrue(alwaysNormalize)) {
+        normalizationType = ALWAYS_NORMALIZE;
+      }
+      return _createElement(context, tag, data, children, normalizationType)
+    }
+  
+    function _createElement (
+      context,
+      tag,
+      data,
+      children,
+      normalizationType
+    ) {
+      if (isDef(data) && isDef((data).__ob__)) {
+        warn(
+          "Avoid using observed data object as vnode data: " + (JSON.stringify(data)) + "\n" +
+          'Always create fresh vnode data objects in each render!',
+          context
+        );
+        return createEmptyVNode()
+      }
+      // object syntax in v-bind
+      if (isDef(data) && isDef(data.is)) {
+        tag = data.is;
+      }
+      if (!tag) {
+        // in case of component :is set to falsy value
+        return createEmptyVNode()
+      }
+      // warn against non-primitive key
+      if (isDef(data) && isDef(data.key) && !isPrimitive(data.key)
+      ) {
+        {
+          warn(
+            'Avoid using non-primitive value as key, ' +
+            'use string/number value instead.',
+            context
+          );
+        }
+      }
+      // support single function children as default scoped slot
+      if (Array.isArray(children) &&
+        typeof children[0] === 'function'
+      ) {
+        data = data || {};
+        data.scopedSlots = { default: children[0] };
+        children.length = 0;
+      }
+      if (normalizationType === ALWAYS_NORMALIZE) {
+        children = normalizeChildren(children);
+      } else if (normalizationType === SIMPLE_NORMALIZE) {
+        children = simpleNormalizeChildren(children);
+      }
+      var vnode, ns;
+      if (typeof tag === 'string') {
+        var Ctor;
+        ns = (context.$vnode && context.$vnode.ns) || config.getTagNamespace(tag);
+        if (config.isReservedTag(tag)) {
+          // platform built-in elements
+          vnode = new VNode(
+            config.parsePlatformTagName(tag), data, children,
+            undefined, undefined, context
+          );
+        } else if ((!data || !data.pre) && isDef(Ctor = resolveAsset(context.$options, 'components', tag))) {
+          // component
+          vnode = createComponent(Ctor, data, context, children, tag);
+        } else {
+          // unknown or unlisted namespaced elements
+          // check at runtime because it may get assigned a namespace when its
+          // parent normalizes children
+          vnode = new VNode(
+            tag, data, children,
+            undefined, undefined, context
+          );
+        }
+      } else {
+        // direct component options / constructor
+        vnode = createComponent(tag, data, context, children);
+      }
+      if (Array.isArray(vnode)) {
+        return vnode
+      } else if (isDef(vnode)) {
+        if (isDef(ns)) { applyNS(vnode, ns); }
+        if (isDef(data)) { registerDeepBindings(data); }
+        return vnode
+      } else {
+        return createEmptyVNode()
+      }
+    }
+  
+    function applyNS (vnode, ns, force) {
+      vnode.ns = ns;
+      if (vnode.tag === 'foreignObject') {
+        // use default namespace inside foreignObject
+        ns = undefined;
+        force = true;
+      }
+      if (isDef(vnode.children)) {
+        for (var i = 0, l = vnode.children.length; i < l; i++) {
+          var child = vnode.children[i];
+          if (isDef(child.tag) && (
+            isUndef(child.ns) || (isTrue(force) && child.tag !== 'svg'))) {
+            applyNS(child, ns, force);
+          }
+        }
+      }
+    }
+  
+    // ref #5318
+    // necessary to ensure parent re-render when deep bindings like :style and
+    // :class are used on slot nodes
+    function registerDeepBindings (data) {
+      if (isObject(data.style)) {
+        traverse(data.style);
+      }
+      if (isObject(data.class)) {
+        traverse(data.class);
+      }
+    }
+  
+    /*  */
+  
+    function initRender (vm) {
+      vm._vnode = null; // the root of the child tree
+      vm._staticTrees = null; // v-once cached trees
+      var options = vm.$options;
+      var parentVnode = vm.$vnode = options._parentVnode; // the placeholder node in parent tree
+      var renderContext = parentVnode && parentVnode.context;
+      vm.$slots = resolveSlots(options._renderChildren, renderContext);
+      vm.$scopedSlots = emptyObject;
+      // bind the createElement fn to this instance
+      // so that we get proper render context inside it.
+      // args order: tag, data, children, normalizationType, alwaysNormalize
+      // internal version is used by render functions compiled from templates
+      vm._c = function (a, b, c, d) { return createElement(vm, a, b, c, d, false); };
+      // normalization is always applied for the public version, used in
+      // user-written render functions.
+      vm.$createElement = function (a, b, c, d) { return createElement(vm, a, b, c, d, true); };
+  
+      // $attrs & $listeners are exposed for easier HOC creation.
+      // they need to be reactive so that HOCs using them are always updated
+      var parentData = parentVnode && parentVnode.data;
+  
+      /* istanbul ignore else */
+      {
+        defineReactive$$1(vm, '$attrs', parentData && parentData.attrs || emptyObject, function () {
+          !isUpdatingChildComponent && warn("$attrs is readonly.", vm);
+        }, true);
+        defineReactive$$1(vm, '$listeners', options._parentListeners || emptyObject, function () {
+          !isUpdatingChildComponent && warn("$listeners is readonly.", vm);
+        }, true);
+      }
+    }
+  
+    var currentRenderingInstance = null;
+  
+    function renderMixin (Vue) {
+      // install runtime convenience helpers
+      installRenderHelpers(Vue.prototype);
+  
+      Vue.prototype.$nextTick = function (fn) {
+        return nextTick(fn, this)
+      };
+  
+      Vue.prototype._render = function () {
+        var vm = this;
+        var ref = vm.$options;
+        var render = ref.render;
+        var _parentVnode = ref._parentVnode;
+  
+        if (_parentVnode) {
+          vm.$scopedSlots = normalizeScopedSlots(
+            _parentVnode.data.scopedSlots,
+            vm.$slots,
+            vm.$scopedSlots
+          );
+        }
+  
+        // set parent vnode. this allows render functions to have access
+        // to the data on the placeholder node.
+        vm.$vnode = _parentVnode;
+        // render self
+        var vnode;
+        try {
+          // There's no need to maintain a stack becaues all render fns are called
+          // separately from one another. Nested component's render fns are called
+          // when parent component is patched.
+          currentRenderingInstance = vm;
+          vnode = render.call(vm._renderProxy, vm.$createElement);
+        } catch (e) {
+          handleError(e, vm, "render");
+          // return error render result,
+          // or previous vnode to prevent render error causing blank component
+          /* istanbul ignore else */
+          if (vm.$options.renderError) {
+            try {
+              vnode = vm.$options.renderError.call(vm._renderProxy, vm.$createElement, e);
+            } catch (e) {
+              handleError(e, vm, "renderError");
+              vnode = vm._vnode;
+            }
+          } else {
+            vnode = vm._vnode;
+          }
+        } finally {
+          currentRenderingInstance = null;
+        }
+        // if the returned array contains only a single node, allow it
+        if (Array.isArray(vnode) && vnode.length === 1) {
+          vnode = vnode[0];
+        }
+        // return empty vnode in case the render function errored out
+        if (!(vnode instanceof VNode)) {
+          if (Array.isArray(vnode)) {
+            warn(
+              'Multiple root nodes returned from render function. Render function ' +
+              'should return a single root node.',
+              vm
+            );
+          }
+          vnode = createEmptyVNode();
+        }
+        // set parent
+        vnode.parent = _parentVnode;
+        return vnode
+      };
+    }
+  
+    /*  */
+  
+    function ensureCtor (comp, base) {
+      if (
+        comp.__esModule ||
+        (hasSymbol && comp[Symbol.toStringTag] === 'Module')
+      ) {
+        comp = comp.default;
+      }
+      return isObject(comp)
+        ? base.extend(comp)
+        : comp
+    }
+  
+    function createAsyncPlaceholder (
+      factory,
+      data,
+      context,
+      children,
+      tag
+    ) {
+      var node = createEmptyVNode();
+      node.asyncFactory = factory;
+      node.asyncMeta = { data: data, context: context, children: children, tag: tag };
+      return node
+    }
+  
+    function resolveAsyncComponent (
+      factory,
+      baseCtor
+    ) {
+      if (isTrue(factory.error) && isDef(factory.errorComp)) {
+        return factory.errorComp
+      }
+  
+      if (isDef(factory.resolved)) {
+        return factory.resolved
+      }
+  
+      var owner = currentRenderingInstance;
+      if (owner && isDef(factory.owners) && factory.owners.indexOf(owner) === -1) {
+        // already pending
+        factory.owners.push(owner);
+      }
+  
+      if (isTrue(factory.loading) && isDef(factory.loadingComp)) {
+        return factory.loadingComp
+      }
+  
+      if (owner && !isDef(factory.owners)) {
+        var owners = factory.owners = [owner];
+        var sync = true;
+        var timerLoading = null;
+        var timerTimeout = null
+  
+        ;(owner).$on('hook:destroyed', function () { return remove(owners, owner); });
+  
+        var forceRender = function (renderCompleted) {
+          for (var i = 0, l = owners.length; i < l; i++) {
+            (owners[i]).$forceUpdate();
+          }
+  
+          if (renderCompleted) {
+            owners.length = 0;
+            if (timerLoading !== null) {
+              clearTimeout(timerLoading);
+              timerLoading = null;
+            }
+            if (timerTimeout !== null) {
+              clearTimeout(timerTimeout);
+              timerTimeout = null;
+            }
+          }
+        };
+  
+        var resolve = once(function (res) {
+          // cache resolved
+          factory.resolved = ensureCtor(res, baseCtor);
+          // invoke callbacks only if this is not a synchronous resolve
+          // (async resolves are shimmed as synchronous during SSR)
+          if (!sync) {
+            forceRender(true);
+          } else {
+            owners.length = 0;
+          }
+        });
+  
+        var reject = once(function (reason) {
+          warn(
+            "Failed to resolve async component: " + (String(factory)) +
+            (reason ? ("\nReason: " + reason) : '')
+          );
+          if (isDef(factory.errorComp)) {
+            factory.error = true;
+            forceRender(true);
+          }
+        });
+  
+        var res = factory(resolve, reject);
+  
+        if (isObject(res)) {
+          if (isPromise(res)) {
+            // () => Promise
+            if (isUndef(factory.resolved)) {
+              res.then(resolve, reject);
+            }
+          } else if (isPromise(res.component)) {
+            res.component.then(resolve, reject);
+  
+            if (isDef(res.error)) {
+              factory.errorComp = ensureCtor(res.error, baseCtor);
+            }
+  
+            if (isDef(res.loading)) {
+              factory.loadingComp = ensureCtor(res.loading, baseCtor);
+              if (res.delay === 0) {
+                factory.loading = true;
+              } else {
+                timerLoading = setTimeout(function () {
+                  timerLoading = null;
+                  if (isUndef(factory.resolved) && isUndef(factory.error)) {
+                    factory.loading = true;
+                    forceRender(false);
+                  }
+                }, res.delay || 200);
+              }
+            }
+  
+            if (isDef(res.timeout)) {
+              timerTimeout = setTimeout(function () {
+                timerTimeout = null;
+                if (isUndef(factory.resolved)) {
+                  reject(
+                    "timeout (" + (res.timeout) + "ms)"
+                  );
+                }
+              }, res.timeout);
+            }
+          }
+        }
+  
+        sync = false;
+        // return in case resolved synchronously
+        return factory.loading
+          ? factory.loadingComp
+          : factory.resolved
+      }
+    }
+  
+    /*  */
+  
+    function isAsyncPlaceholder (node) {
+      return node.isComment && node.asyncFactory
+    }
+  
+    /*  */
+  
+    function getFirstComponentChild (children) {
+      if (Array.isArray(children)) {
+        for (var i = 0; i < children.length; i++) {
+          var c = children[i];
+          if (isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) {
+            return c
+          }
+        }
+      }
+    }
+  
+    /*  */
+  
+    /*  */
+  
+    function initEvents (vm) {
+      vm._events = Object.create(null);
+      vm._hasHookEvent = false;
+      // init parent attached events
+      var listeners = vm.$options._parentListeners;
+      if (listeners) {
+        updateComponentListeners(vm, listeners);
+      }
+    }
+  
+    var target;
+  
+    function add (event, fn) {
+      target.$on(event, fn);
+    }
+  
+    function remove$1 (event, fn) {
+      target.$off(event, fn);
+    }
+  
+    function createOnceHandler (event, fn) {
+      var _target = target;
+      return function onceHandler () {
+        var res = fn.apply(null, arguments);
+        if (res !== null) {
+          _target.$off(event, onceHandler);
+        }
+      }
+    }
+  
+    function updateComponentListeners (
+      vm,
+      listeners,
+      oldListeners
+    ) {
+      target = vm;
+      updateListeners(listeners, oldListeners || {}, add, remove$1, createOnceHandler, vm);
+      target = undefined;
+    }
+  
+    function eventsMixin (Vue) {
+      var hookRE = /^hook:/;
+      Vue.prototype.$on = function (event, fn) {
+        var vm = this;
+        if (Array.isArray(event)) {
+          for (var i = 0, l = event.length; i < l; i++) {
+            vm.$on(event[i], fn);
+          }
+        } else {
+          (vm._events[event] || (vm._events[event] = [])).push(fn);
+          // optimize hook:event cost by using a boolean flag marked at registration
+          // instead of a hash lookup
+          if (hookRE.test(event)) {
+            vm._hasHookEvent = true;
+          }
+        }
+        return vm
+      };
+  
+      Vue.prototype.$once = function (event, fn) {
+        var vm = this;
+        function on () {
+          vm.$off(event, on);
+          fn.apply(vm, arguments);
+        }
+        on.fn = fn;
+        vm.$on(event, on);
+        return vm
+      };
+  
+      Vue.prototype.$off = function (event, fn) {
+        var vm = this;
+        // all
+        if (!arguments.length) {
+          vm._events = Object.create(null);
+          return vm
+        }
+        // array of events
+        if (Array.isArray(event)) {
+          for (var i$1 = 0, l = event.length; i$1 < l; i$1++) {
+            vm.$off(event[i$1], fn);
+          }
+          return vm
+        }
+        // specific event
+        var cbs = vm._events[event];
+        if (!cbs) {
+          return vm
+        }
+        if (!fn) {
+          vm._events[event] = null;
+          return vm
+        }
+        // specific handler
+        var cb;
+        var i = cbs.length;
+        while (i--) {
+          cb = cbs[i];
+          if (cb === fn || cb.fn === fn) {
+            cbs.splice(i, 1);
+            break
+          }
+        }
+        return vm
+      };
+  
+      Vue.prototype.$emit = function (event) {
+        var vm = this;
+        {
+          var lowerCaseEvent = event.toLowerCase();
+          if (lowerCaseEvent !== event && vm._events[lowerCaseEvent]) {
+            tip(
+              "Event \"" + lowerCaseEvent + "\" is emitted in component " +
+              (formatComponentName(vm)) + " but the handler is registered for \"" + event + "\". " +
+              "Note that HTML attributes are case-insensitive and you cannot use " +
+              "v-on to listen to camelCase events when using in-DOM templates. " +
+              "You should probably use \"" + (hyphenate(event)) + "\" instead of \"" + event + "\"."
+            );
+          }
+        }
+        var cbs = vm._events[event];
+        if (cbs) {
+          cbs = cbs.length > 1 ? toArray(cbs) : cbs;
+          var args = toArray(arguments, 1);
+          var info = "event handler for \"" + event + "\"";
+          for (var i = 0, l = cbs.length; i < l; i++) {
+            invokeWithErrorHandling(cbs[i], vm, args, vm, info);
+          }
+        }
+        return vm
+      };
+    }
+  
+    /*  */
+  
+    var activeInstance = null;
+    var isUpdatingChildComponent = false;
+  
+    function setActiveInstance(vm) {
+      var prevActiveInstance = activeInstance;
+      activeInstance = vm;
+      return function () {
+        activeInstance = prevActiveInstance;
+      }
+    }
+  
+    function initLifecycle (vm) {
+      var options = vm.$options;
+  
+      // locate first non-abstract parent
+      var parent = options.parent;
+      if (parent && !options.abstract) {
+        while (parent.$options.abstract && parent.$parent) {
+          parent = parent.$parent;
+        }
+        parent.$children.push(vm);
+      }
+  
+      vm.$parent = parent;
+      vm.$root = parent ? parent.$root : vm;
+  
+      vm.$children = [];
+      vm.$refs = {};
+  
+      vm._watcher = null;
+      vm._inactive = null;
+      vm._directInactive = false;
+      vm._isMounted = false;
+      vm._isDestroyed = false;
+      vm._isBeingDestroyed = false;
+    }
+  
+    function lifecycleMixin (Vue) {
+      Vue.prototype._update = function (vnode, hydrating) {
+        var vm = this;
+        var prevEl = vm.$el;
+        var prevVnode = vm._vnode;
+        var restoreActiveInstance = setActiveInstance(vm);
+        vm._vnode = vnode;
+        // Vue.prototype.__patch__ is injected in entry points
+        // based on the rendering backend used.
+        if (!prevVnode) {
+          // initial render
+          vm.$el = vm.__patch__(vm.$el, vnode, hydrating, false /* removeOnly */);
+        } else {
+          // updates
+          vm.$el = vm.__patch__(prevVnode, vnode);
+        }
+        restoreActiveInstance();
+        // update __vue__ reference
+        if (prevEl) {
+          prevEl.__vue__ = null;
+        }
+        if (vm.$el) {
+          vm.$el.__vue__ = vm;
+        }
+        // if parent is an HOC, update its $el as well
+        if (vm.$vnode && vm.$parent && vm.$vnode === vm.$parent._vnode) {
+          vm.$parent.$el = vm.$el;
+        }
+        // updated hook is called by the scheduler to ensure that children are
+        // updated in a parent's updated hook.
+      };
+  
+      Vue.prototype.$forceUpdate = function () {
+        var vm = this;
+        if (vm._watcher) {
+          vm._watcher.update();
+        }
+      };
+  
+      Vue.prototype.$destroy = function () {
+        var vm = this;
+        if (vm._isBeingDestroyed) {
+          return
+        }
+        callHook(vm, 'beforeDestroy');
+        vm._isBeingDestroyed = true;
+        // remove self from parent
+        var parent = vm.$parent;
+        if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) {
+          remove(parent.$children, vm);
+        }
+        // teardown watchers
+        if (vm._watcher) {
+          vm._watcher.teardown();
+        }
+        var i = vm._watchers.length;
+        while (i--) {
+          vm._watchers[i].teardown();
+        }
+        // remove reference from data ob
+        // frozen object may not have observer.
+        if (vm._data.__ob__) {
+          vm._data.__ob__.vmCount--;
+        }
+        // call the last hook...
+        vm._isDestroyed = true;
+        // invoke destroy hooks on current rendered tree
+        vm.__patch__(vm._vnode, null);
+        // fire destroyed hook
+        callHook(vm, 'destroyed');
+        // turn off all instance listeners.
+        vm.$off();
+        // remove __vue__ reference
+        if (vm.$el) {
+          vm.$el.__vue__ = null;
+        }
+        // release circular reference (#6759)
+        if (vm.$vnode) {
+          vm.$vnode.parent = null;
+        }
+      };
+    }
+  
+    function mountComponent (
+      vm,
+      el,
+      hydrating
+    ) {
+      vm.$el = el;
+      if (!vm.$options.render) {
+        vm.$options.render = createEmptyVNode;
+        {
+          /* istanbul ignore if */
+          if ((vm.$options.template && vm.$options.template.charAt(0) !== '#') ||
+            vm.$options.el || el) {
+            warn(
+              'You are using the runtime-only build of Vue where the template ' +
+              'compiler is not available. Either pre-compile the templates into ' +
+              'render functions, or use the compiler-included build.',
+              vm
+            );
+          } else {
+            warn(
+              'Failed to mount component: template or render function not defined.',
+              vm
+            );
+          }
+        }
+      }
+      callHook(vm, 'beforeMount');
+  
+      var updateComponent;
+      /* istanbul ignore if */
+      if (config.performance && mark) {
+        updateComponent = function () {
+          var name = vm._name;
+          var id = vm._uid;
+          var startTag = "vue-perf-start:" + id;
+          var endTag = "vue-perf-end:" + id;
+  
+          mark(startTag);
+          var vnode = vm._render();
+          mark(endTag);
+          measure(("vue " + name + " render"), startTag, endTag);
+  
+          mark(startTag);
+          vm._update(vnode, hydrating);
+          mark(endTag);
+          measure(("vue " + name + " patch"), startTag, endTag);
+        };
+      } else {
+        updateComponent = function () {
+          vm._update(vm._render(), hydrating);
+        };
+      }
+  
+      // we set this to vm._watcher inside the watcher's constructor
+      // since the watcher's initial patch may call $forceUpdate (e.g. inside child
+      // component's mounted hook), which relies on vm._watcher being already defined
+      new Watcher(vm, updateComponent, noop, {
+        before: function before () {
+          if (vm._isMounted && !vm._isDestroyed) {
+            callHook(vm, 'beforeUpdate');
+          }
+        }
+      }, true /* isRenderWatcher */);
+      hydrating = false;
+  
+      // manually mounted instance, call mounted on self
+      // mounted is called for render-created child components in its inserted hook
+      if (vm.$vnode == null) {
+        vm._isMounted = true;
+        callHook(vm, 'mounted');
+      }
+      return vm
+    }
+  
+    function updateChildComponent (
+      vm,
+      propsData,
+      listeners,
+      parentVnode,
+      renderChildren
+    ) {
+      {
+        isUpdatingChildComponent = true;
+      }
+  
+      // determine whether component has slot children
+      // we need to do this before overwriting $options._renderChildren.
+  
+      // check if there are dynamic scopedSlots (hand-written or compiled but with
+      // dynamic slot names). Static scoped slots compiled from template has the
+      // "$stable" marker.
+      var newScopedSlots = parentVnode.data.scopedSlots;
+      var oldScopedSlots = vm.$scopedSlots;
+      var hasDynamicScopedSlot = !!(
+        (newScopedSlots && !newScopedSlots.$stable) ||
+        (oldScopedSlots !== emptyObject && !oldScopedSlots.$stable) ||
+        (newScopedSlots && vm.$scopedSlots.$key !== newScopedSlots.$key)
+      );
+  
+      // Any static slot children from the parent may have changed during parent's
+      // update. Dynamic scoped slots may also have changed. In such cases, a forced
+      // update is necessary to ensure correctness.
+      var needsForceUpdate = !!(
+        renderChildren ||               // has new static slots
+        vm.$options._renderChildren ||  // has old static slots
+        hasDynamicScopedSlot
+      );
+  
+      vm.$options._parentVnode = parentVnode;
+      vm.$vnode = parentVnode; // update vm's placeholder node without re-render
+  
+      if (vm._vnode) { // update child tree's parent
+        vm._vnode.parent = parentVnode;
+      }
+      vm.$options._renderChildren = renderChildren;
+  
+      // update $attrs and $listeners hash
+      // these are also reactive so they may trigger child update if the child
+      // used them during render
+      vm.$attrs = parentVnode.data.attrs || emptyObject;
+      vm.$listeners = listeners || emptyObject;
+  
+      // update props
+      if (propsData && vm.$options.props) {
+        toggleObserving(false);
+        var props = vm._props;
+        var propKeys = vm.$options._propKeys || [];
+        for (var i = 0; i < propKeys.length; i++) {
+          var key = propKeys[i];
+          var propOptions = vm.$options.props; // wtf flow?
+          props[key] = validateProp(key, propOptions, propsData, vm);
+        }
+        toggleObserving(true);
+        // keep a copy of raw propsData
+        vm.$options.propsData = propsData;
+      }
+  
+      // update listeners
+      listeners = listeners || emptyObject;
+      var oldListeners = vm.$options._parentListeners;
+      vm.$options._parentListeners = listeners;
+      updateComponentListeners(vm, listeners, oldListeners);
+  
+      // resolve slots + force update if has children
+      if (needsForceUpdate) {
+        vm.$slots = resolveSlots(renderChildren, parentVnode.context);
+        vm.$forceUpdate();
+      }
+  
+      {
+        isUpdatingChildComponent = false;
+      }
+    }
+  
+    function isInInactiveTree (vm) {
+      while (vm && (vm = vm.$parent)) {
+        if (vm._inactive) { return true }
+      }
+      return false
+    }
+  
+    function activateChildComponent (vm, direct) {
+      if (direct) {
+        vm._directInactive = false;
+        if (isInInactiveTree(vm)) {
+          return
+        }
+      } else if (vm._directInactive) {
+        return
+      }
+      if (vm._inactive || vm._inactive === null) {
+        vm._inactive = false;
+        for (var i = 0; i < vm.$children.length; i++) {
+          activateChildComponent(vm.$children[i]);
+        }
+        callHook(vm, 'activated');
+      }
+    }
+  
+    function deactivateChildComponent (vm, direct) {
+      if (direct) {
+        vm._directInactive = true;
+        if (isInInactiveTree(vm)) {
+          return
+        }
+      }
+      if (!vm._inactive) {
+        vm._inactive = true;
+        for (var i = 0; i < vm.$children.length; i++) {
+          deactivateChildComponent(vm.$children[i]);
+        }
+        callHook(vm, 'deactivated');
+      }
+    }
+  
+    function callHook (vm, hook) {
+      // #7573 disable dep collection when invoking lifecycle hooks
+      pushTarget();
+      var handlers = vm.$options[hook];
+      var info = hook + " hook";
+      if (handlers) {
+        for (var i = 0, j = handlers.length; i < j; i++) {
+          invokeWithErrorHandling(handlers[i], vm, null, vm, info);
+        }
+      }
+      if (vm._hasHookEvent) {
+        vm.$emit('hook:' + hook);
+      }
+      popTarget();
+    }
+  
+    /*  */
+  
+    var MAX_UPDATE_COUNT = 100;
+  
+    var queue = [];
+    var activatedChildren = [];
+    var has = {};
+    var circular = {};
+    var waiting = false;
+    var flushing = false;
+    var index = 0;
+  
+    /**
+     * Reset the scheduler's state.
+     */
+    function resetSchedulerState () {
+      index = queue.length = activatedChildren.length = 0;
+      has = {};
+      {
+        circular = {};
+      }
+      waiting = flushing = false;
+    }
+  
+    // Async edge case #6566 requires saving the timestamp when event listeners are
+    // attached. However, calling performance.now() has a perf overhead especially
+    // if the page has thousands of event listeners. Instead, we take a timestamp
+    // every time the scheduler flushes and use that for all event listeners
+    // attached during that flush.
+    var currentFlushTimestamp = 0;
+  
+    // Async edge case fix requires storing an event listener's attach timestamp.
+    var getNow = Date.now;
+  
+    // Determine what event timestamp the browser is using. Annoyingly, the
+    // timestamp can either be hi-res (relative to page load) or low-res
+    // (relative to UNIX epoch), so in order to compare time we have to use the
+    // same timestamp type when saving the flush timestamp.
+    // All IE versions use low-res event timestamps, and have problematic clock
+    // implementations (#9632)
+    if (inBrowser && !isIE) {
+      var performance = window.performance;
+      if (
+        performance &&
+        typeof performance.now === 'function' &&
+        getNow() > document.createEvent('Event').timeStamp
+      ) {
+        // if the event timestamp, although evaluated AFTER the Date.now(), is
+        // smaller than it, it means the event is using a hi-res timestamp,
+        // and we need to use the hi-res version for event listener timestamps as
+        // well.
+        getNow = function () { return performance.now(); };
+      }
+    }
+  
+    /**
+     * Flush both queues and run the watchers.
+     */
+    function flushSchedulerQueue () {
+      currentFlushTimestamp = getNow();
+      flushing = true;
+      var watcher, id;
+  
+      // Sort queue before flush.
+      // This ensures that:
+      // 1. Components are updated from parent to child. (because parent is always
+      //    created before the child)
+      // 2. A component's user watchers are run before its render watcher (because
+      //    user watchers are created before the render watcher)
+      // 3. If a component is destroyed during a parent component's watcher run,
+      //    its watchers can be skipped.
+      queue.sort(function (a, b) { return a.id - b.id; });
+  
+      // do not cache length because more watchers might be pushed
+      // as we run existing watchers
+      for (index = 0; index < queue.length; index++) {
+        watcher = queue[index];
+        if (watcher.before) {
+          watcher.before();
+        }
+        id = watcher.id;
+        has[id] = null;
+        watcher.run();
+        // in dev build, check and stop circular updates.
+        if (has[id] != null) {
+          circular[id] = (circular[id] || 0) + 1;
+          if (circular[id] > MAX_UPDATE_COUNT) {
+            warn(
+              'You may have an infinite update loop ' + (
+                watcher.user
+                  ? ("in watcher with expression \"" + (watcher.expression) + "\"")
+                  : "in a component render function."
+              ),
+              watcher.vm
+            );
+            break
+          }
+        }
+      }
+  
+      // keep copies of post queues before resetting state
+      var activatedQueue = activatedChildren.slice();
+      var updatedQueue = queue.slice();
+  
+      resetSchedulerState();
+  
+      // call component updated and activated hooks
+      callActivatedHooks(activatedQueue);
+      callUpdatedHooks(updatedQueue);
+  
+      // devtool hook
+      /* istanbul ignore if */
+      if (devtools && config.devtools) {
+        devtools.emit('flush');
+      }
+    }
+  
+    function callUpdatedHooks (queue) {
+      var i = queue.length;
+      while (i--) {
+        var watcher = queue[i];
+        var vm = watcher.vm;
+        if (vm._watcher === watcher && vm._isMounted && !vm._isDestroyed) {
+          callHook(vm, 'updated');
+        }
+      }
+    }
+  
+    /**
+     * Queue a kept-alive component that was activated during patch.
+     * The queue will be processed after the entire tree has been patched.
+     */
+    function queueActivatedComponent (vm) {
+      // setting _inactive to false here so that a render function can
+      // rely on checking whether it's in an inactive tree (e.g. router-view)
+      vm._inactive = false;
+      activatedChildren.push(vm);
+    }
+  
+    function callActivatedHooks (queue) {
+      for (var i = 0; i < queue.length; i++) {
+        queue[i]._inactive = true;
+        activateChildComponent(queue[i], true /* true */);
+      }
+    }
+  
+    /**
+     * Push a watcher into the watcher queue.
+     * Jobs with duplicate IDs will be skipped unless it's
+     * pushed when the queue is being flushed.
+     */
+    function queueWatcher (watcher) {
+      var id = watcher.id;
+      if (has[id] == null) {
+        has[id] = true;
+        if (!flushing) {
+          queue.push(watcher);
+        } else {
+          // if already flushing, splice the watcher based on its id
+          // if already past its id, it will be run next immediately.
+          var i = queue.length - 1;
+          while (i > index && queue[i].id > watcher.id) {
+            i--;
+          }
+          queue.splice(i + 1, 0, watcher);
+        }
+        // queue the flush
+        if (!waiting) {
+          waiting = true;
+  
+          if (!config.async) {
+            flushSchedulerQueue();
+            return
+          }
+          nextTick(flushSchedulerQueue);
+        }
+      }
+    }
+  
+    /*  */
+  
+  
+  
+    var uid$2 = 0;
+  
+    /**
+     * A watcher parses an expression, collects dependencies,
+     * and fires callback when the expression value changes.
+     * This is used for both the $watch() api and directives.
+     */
+    var Watcher = function Watcher (
+      vm,
+      expOrFn,
+      cb,
+      options,
+      isRenderWatcher
+    ) {
+      this.vm = vm;
+      if (isRenderWatcher) {
+        vm._watcher = this;
+      }
+      vm._watchers.push(this);
+      // options
+      if (options) {
+        this.deep = !!options.deep;
+        this.user = !!options.user;
+        this.lazy = !!options.lazy;
+        this.sync = !!options.sync;
+        this.before = options.before;
+      } else {
+        this.deep = this.user = this.lazy = this.sync = false;
+      }
+      this.cb = cb;
+      this.id = ++uid$2; // uid for batching
+      this.active = true;
+      this.dirty = this.lazy; // for lazy watchers
+      this.deps = [];
+      this.newDeps = [];
+      this.depIds = new _Set();
+      this.newDepIds = new _Set();
+      this.expression = expOrFn.toString();
+      // parse expression for getter
+      if (typeof expOrFn === 'function') {
+        this.getter = expOrFn;
+      } else {
+        this.getter = parsePath(expOrFn);
+        if (!this.getter) {
+          this.getter = noop;
+          warn(
+            "Failed watching path: \"" + expOrFn + "\" " +
+            'Watcher only accepts simple dot-delimited paths. ' +
+            'For full control, use a function instead.',
+            vm
+          );
+        }
+      }
+      this.value = this.lazy
+        ? undefined
+        : this.get();
+    };
+  
+    /**
+     * Evaluate the getter, and re-collect dependencies.
+     */
+    Watcher.prototype.get = function get () {
+      pushTarget(this);
+      var value;
+      var vm = this.vm;
+      try {
+        value = this.getter.call(vm, vm);
+      } catch (e) {
+        if (this.user) {
+          handleError(e, vm, ("getter for watcher \"" + (this.expression) + "\""));
+        } else {
+          throw e
+        }
+      } finally {
+        // "touch" every property so they are all tracked as
+        // dependencies for deep watching
+        if (this.deep) {
+          traverse(value);
+        }
+        popTarget();
+        this.cleanupDeps();
+      }
+      return value
+    };
+  
+    /**
+     * Add a dependency to this directive.
+     */
+    Watcher.prototype.addDep = function addDep (dep) {
+      var id = dep.id;
+      if (!this.newDepIds.has(id)) {
+        this.newDepIds.add(id);
+        this.newDeps.push(dep);
+        if (!this.depIds.has(id)) {
+          dep.addSub(this);
+        }
+      }
+    };
+  
+    /**
+     * Clean up for dependency collection.
+     */
+    Watcher.prototype.cleanupDeps = function cleanupDeps () {
+      var i = this.deps.length;
+      while (i--) {
+        var dep = this.deps[i];
+        if (!this.newDepIds.has(dep.id)) {
+          dep.removeSub(this);
+        }
+      }
+      var tmp = this.depIds;
+      this.depIds = this.newDepIds;
+      this.newDepIds = tmp;
+      this.newDepIds.clear();
+      tmp = this.deps;
+      this.deps = this.newDeps;
+      this.newDeps = tmp;
+      this.newDeps.length = 0;
+    };
+  
+    /**
+     * Subscriber interface.
+     * Will be called when a dependency changes.
+     */
+    Watcher.prototype.update = function update () {
+      /* istanbul ignore else */
+      if (this.lazy) {
+        this.dirty = true;
+      } else if (this.sync) {
+        this.run();
+      } else {
+        queueWatcher(this);
+      }
+    };
+  
+    /**
+     * Scheduler job interface.
+     * Will be called by the scheduler.
+     */
+    Watcher.prototype.run = function run () {
+      if (this.active) {
+        var value = this.get();
+        if (
+          value !== this.value ||
+          // Deep watchers and watchers on Object/Arrays should fire even
+          // when the value is the same, because the value may
+          // have mutated.
+          isObject(value) ||
+          this.deep
+        ) {
+          // set new value
+          var oldValue = this.value;
+          this.value = value;
+          if (this.user) {
+            try {
+              this.cb.call(this.vm, value, oldValue);
+            } catch (e) {
+              handleError(e, this.vm, ("callback for watcher \"" + (this.expression) + "\""));
+            }
+          } else {
+            this.cb.call(this.vm, value, oldValue);
+          }
+        }
+      }
+    };
+  
+    /**
+     * Evaluate the value of the watcher.
+     * This only gets called for lazy watchers.
+     */
+    Watcher.prototype.evaluate = function evaluate () {
+      this.value = this.get();
+      this.dirty = false;
+    };
+  
+    /**
+     * Depend on all deps collected by this watcher.
+     */
+    Watcher.prototype.depend = function depend () {
+      var i = this.deps.length;
+      while (i--) {
+        this.deps[i].depend();
+      }
+    };
+  
+    /**
+     * Remove self from all dependencies' subscriber list.
+     */
+    Watcher.prototype.teardown = function teardown () {
+      if (this.active) {
+        // remove self from vm's watcher list
+        // this is a somewhat expensive operation so we skip it
+        // if the vm is being destroyed.
+        if (!this.vm._isBeingDestroyed) {
+          remove(this.vm._watchers, this);
+        }
+        var i = this.deps.length;
+        while (i--) {
+          this.deps[i].removeSub(this);
+        }
+        this.active = false;
+      }
+    };
+  
+    /*  */
+  
+    var sharedPropertyDefinition = {
+      enumerable: true,
+      configurable: true,
+      get: noop,
+      set: noop
+    };
+  
+    function proxy (target, sourceKey, key) {
+      sharedPropertyDefinition.get = function proxyGetter () {
+        return this[sourceKey][key]
+      };
+      sharedPropertyDefinition.set = function proxySetter (val) {
+        this[sourceKey][key] = val;
+      };
+      Object.defineProperty(target, key, sharedPropertyDefinition);
+    }
+  
+    function initState (vm) {
+      vm._watchers = [];
+      var opts = vm.$options;
+      if (opts.props) { initProps(vm, opts.props); }
+      if (opts.methods) { initMethods(vm, opts.methods); }
+      if (opts.data) {
+        initData(vm);
+      } else {
+        observe(vm._data = {}, true /* asRootData */);
+      }
+      if (opts.computed) { initComputed(vm, opts.computed); }
+      if (opts.watch && opts.watch !== nativeWatch) {
+        initWatch(vm, opts.watch);
+      }
+    }
+  
+    function initProps (vm, propsOptions) {
+      var propsData = vm.$options.propsData || {};
+      var props = vm._props = {};
+      // cache prop keys so that future props updates can iterate using Array
+      // instead of dynamic object key enumeration.
+      var keys = vm.$options._propKeys = [];
+      var isRoot = !vm.$parent;
+      // root instance props should be converted
+      if (!isRoot) {
+        toggleObserving(false);
+      }
+      var loop = function ( key ) {
+        keys.push(key);
+        var value = validateProp(key, propsOptions, propsData, vm);
+        /* istanbul ignore else */
+        {
+          var hyphenatedKey = hyphenate(key);
+          if (isReservedAttribute(hyphenatedKey) ||
+              config.isReservedAttr(hyphenatedKey)) {
+            warn(
+              ("\"" + hyphenatedKey + "\" is a reserved attribute and cannot be used as component prop."),
+              vm
+            );
+          }
+          defineReactive$$1(props, key, value, function () {
+            if (!isRoot && !isUpdatingChildComponent) {
+              warn(
+                "Avoid mutating a prop directly since the value will be " +
+                "overwritten whenever the parent component re-renders. " +
+                "Instead, use a data or computed property based on the prop's " +
+                "value. Prop being mutated: \"" + key + "\"",
+                vm
+              );
+            }
+          });
+        }
+        // static props are already proxied on the component's prototype
+        // during Vue.extend(). We only need to proxy props defined at
+        // instantiation here.
+        if (!(key in vm)) {
+          proxy(vm, "_props", key);
+        }
+      };
+  
+      for (var key in propsOptions) loop( key );
+      toggleObserving(true);
+    }
+  
+    function initData (vm) {
+      var data = vm.$options.data;
+      data = vm._data = typeof data === 'function'
+        ? getData(data, vm)
+        : data || {};
+      if (!isPlainObject(data)) {
+        data = {};
+        warn(
+          'data functions should return an object:\n' +
+          'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function',
+          vm
+        );
+      }
+      // proxy data on instance
+      var keys = Object.keys(data);
+      var props = vm.$options.props;
+      var methods = vm.$options.methods;
+      var i = keys.length;
+      while (i--) {
+        var key = keys[i];
+        {
+          if (methods && hasOwn(methods, key)) {
+            warn(
+              ("Method \"" + key + "\" has already been defined as a data property."),
+              vm
+            );
+          }
+        }
+        if (props && hasOwn(props, key)) {
+          warn(
+            "The data property \"" + key + "\" is already declared as a prop. " +
+            "Use prop default value instead.",
+            vm
+          );
+        } else if (!isReserved(key)) {
+          proxy(vm, "_data", key);
+        }
+      }
+      // observe data
+      observe(data, true /* asRootData */);
+    }
+  
+    function getData (data, vm) {
+      // #7573 disable dep collection when invoking data getters
+      pushTarget();
+      try {
+        return data.call(vm, vm)
+      } catch (e) {
+        handleError(e, vm, "data()");
+        return {}
+      } finally {
+        popTarget();
+      }
+    }
+  
+    var computedWatcherOptions = { lazy: true };
+  
+    function initComputed (vm, computed) {
+      // $flow-disable-line
+      var watchers = vm._computedWatchers = Object.create(null);
+      // computed properties are just getters during SSR
+      var isSSR = isServerRendering();
+  
+      for (var key in computed) {
+        var userDef = computed[key];
+        var getter = typeof userDef === 'function' ? userDef : userDef.get;
+        if (getter == null) {
+          warn(
+            ("Getter is missing for computed property \"" + key + "\"."),
+            vm
+          );
+        }
+  
+        if (!isSSR) {
+          // create internal watcher for the computed property.
+          watchers[key] = new Watcher(
+            vm,
+            getter || noop,
+            noop,
+            computedWatcherOptions
+          );
+        }
+  
+        // component-defined computed properties are already defined on the
+        // component prototype. We only need to define computed properties defined
+        // at instantiation here.
+        if (!(key in vm)) {
+          defineComputed(vm, key, userDef);
+        } else {
+          if (key in vm.$data) {
+            warn(("The computed property \"" + key + "\" is already defined in data."), vm);
+          } else if (vm.$options.props && key in vm.$options.props) {
+            warn(("The computed property \"" + key + "\" is already defined as a prop."), vm);
+          }
+        }
+      }
+    }
+  
+    function defineComputed (
+      target,
+      key,
+      userDef
+    ) {
+      var shouldCache = !isServerRendering();
+      if (typeof userDef === 'function') {
+        sharedPropertyDefinition.get = shouldCache
+          ? createComputedGetter(key)
+          : createGetterInvoker(userDef);
+        sharedPropertyDefinition.set = noop;
+      } else {
+        sharedPropertyDefinition.get = userDef.get
+          ? shouldCache && userDef.cache !== false
+            ? createComputedGetter(key)
+            : createGetterInvoker(userDef.get)
+          : noop;
+        sharedPropertyDefinition.set = userDef.set || noop;
+      }
+      if (sharedPropertyDefinition.set === noop) {
+        sharedPropertyDefinition.set = function () {
+          warn(
+            ("Computed property \"" + key + "\" was assigned to but it has no setter."),
+            this
+          );
+        };
+      }
+      Object.defineProperty(target, key, sharedPropertyDefinition);
+    }
+  
+    function createComputedGetter (key) {
+      return function computedGetter () {
+        var watcher = this._computedWatchers && this._computedWatchers[key];
+        if (watcher) {
+          if (watcher.dirty) {
+            watcher.evaluate();
+          }
+          if (Dep.target) {
+            watcher.depend();
+          }
+          return watcher.value
+        }
+      }
+    }
+  
+    function createGetterInvoker(fn) {
+      return function computedGetter () {
+        return fn.call(this, this)
+      }
+    }
+  
+    function initMethods (vm, methods) {
+      var props = vm.$options.props;
+      for (var key in methods) {
+        {
+          if (typeof methods[key] !== 'function') {
+            warn(
+              "Method \"" + key + "\" has type \"" + (typeof methods[key]) + "\" in the component definition. " +
+              "Did you reference the function correctly?",
+              vm
+            );
+          }
+          if (props && hasOwn(props, key)) {
+            warn(
+              ("Method \"" + key + "\" has already been defined as a prop."),
+              vm
+            );
+          }
+          if ((key in vm) && isReserved(key)) {
+            warn(
+              "Method \"" + key + "\" conflicts with an existing Vue instance method. " +
+              "Avoid defining component methods that start with _ or $."
+            );
+          }
+        }
+        vm[key] = typeof methods[key] !== 'function' ? noop : bind(methods[key], vm);
+      }
+    }
+  
+    function initWatch (vm, watch) {
+      for (var key in watch) {
+        var handler = watch[key];
+        if (Array.isArray(handler)) {
+          for (var i = 0; i < handler.length; i++) {
+            createWatcher(vm, key, handler[i]);
+          }
+        } else {
+          createWatcher(vm, key, handler);
+        }
+      }
+    }
+  
+    function createWatcher (
+      vm,
+      expOrFn,
+      handler,
+      options
+    ) {
+      if (isPlainObject(handler)) {
+        options = handler;
+        handler = handler.handler;
+      }
+      if (typeof handler === 'string') {
+        handler = vm[handler];
+      }
+      return vm.$watch(expOrFn, handler, options)
+    }
+  
+    function stateMixin (Vue) {
+      // flow somehow has problems with directly declared definition object
+      // when using Object.defineProperty, so we have to procedurally build up
+      // the object here.
+      var dataDef = {};
+      dataDef.get = function () { return this._data };
+      var propsDef = {};
+      propsDef.get = function () { return this._props };
+      {
+        dataDef.set = function () {
+          warn(
+            'Avoid replacing instance root $data. ' +
+            'Use nested data properties instead.',
+            this
+          );
+        };
+        propsDef.set = function () {
+          warn("$props is readonly.", this);
+        };
+      }
+      Object.defineProperty(Vue.prototype, '$data', dataDef);
+      Object.defineProperty(Vue.prototype, '$props', propsDef);
+  
+      Vue.prototype.$set = set;
+      Vue.prototype.$delete = del;
+  
+      Vue.prototype.$watch = function (
+        expOrFn,
+        cb,
+        options
+      ) {
+        var vm = this;
+        if (isPlainObject(cb)) {
+          return createWatcher(vm, expOrFn, cb, options)
+        }
+        options = options || {};
+        options.user = true;
+        var watcher = new Watcher(vm, expOrFn, cb, options);
+        if (options.immediate) {
+          try {
+            cb.call(vm, watcher.value);
+          } catch (error) {
+            handleError(error, vm, ("callback for immediate watcher \"" + (watcher.expression) + "\""));
+          }
+        }
+        return function unwatchFn () {
+          watcher.teardown();
+        }
+      };
+    }
+  
+    /*  */
+  
+    var uid$3 = 0;
+  
+    function initMixin (Vue) {
+      Vue.prototype._init = function (options) {
+        var vm = this;
+        // a uid
+        vm._uid = uid$3++;
+  
+        var startTag, endTag;
+        /* istanbul ignore if */
+        if (config.performance && mark) {
+          startTag = "vue-perf-start:" + (vm._uid);
+          endTag = "vue-perf-end:" + (vm._uid);
+          mark(startTag);
+        }
+  
+        // a flag to avoid this being observed
+        vm._isVue = true;
+        // merge options
+        if (options && options._isComponent) {
+          // optimize internal component instantiation
+          // since dynamic options merging is pretty slow, and none of the
+          // internal component options needs special treatment.
+          initInternalComponent(vm, options);
+        } else {
+          vm.$options = mergeOptions(
+            resolveConstructorOptions(vm.constructor),
+            options || {},
+            vm
+          );
+        }
+        /* istanbul ignore else */
+        {
+          initProxy(vm);
+        }
+        // expose real self
+        vm._self = vm;
+        initLifecycle(vm);
+        initEvents(vm);
+        initRender(vm);
+        callHook(vm, 'beforeCreate');
+        initInjections(vm); // resolve injections before data/props
+        initState(vm);
+        initProvide(vm); // resolve provide after data/props
+        callHook(vm, 'created');
+  
+        /* istanbul ignore if */
+        if (config.performance && mark) {
+          vm._name = formatComponentName(vm, false);
+          mark(endTag);
+          measure(("vue " + (vm._name) + " init"), startTag, endTag);
+        }
+  
+        if (vm.$options.el) {
+          vm.$mount(vm.$options.el);
+        }
+      };
+    }
+  
+    function initInternalComponent (vm, options) {
+      var opts = vm.$options = Object.create(vm.constructor.options);
+      // doing this because it's faster than dynamic enumeration.
+      var parentVnode = options._parentVnode;
+      opts.parent = options.parent;
+      opts._parentVnode = parentVnode;
+  
+      var vnodeComponentOptions = parentVnode.componentOptions;
+      opts.propsData = vnodeComponentOptions.propsData;
+      opts._parentListeners = vnodeComponentOptions.listeners;
+      opts._renderChildren = vnodeComponentOptions.children;
+      opts._componentTag = vnodeComponentOptions.tag;
+  
+      if (options.render) {
+        opts.render = options.render;
+        opts.staticRenderFns = options.staticRenderFns;
+      }
+    }
+  
+    function resolveConstructorOptions (Ctor) {
+      var options = Ctor.options;
+      if (Ctor.super) {
+        var superOptions = resolveConstructorOptions(Ctor.super);
+        var cachedSuperOptions = Ctor.superOptions;
+        if (superOptions !== cachedSuperOptions) {
+          // super option changed,
+          // need to resolve new options.
+          Ctor.superOptions = superOptions;
+          // check if there are any late-modified/attached options (#4976)
+          var modifiedOptions = resolveModifiedOptions(Ctor);
+          // update base extend options
+          if (modifiedOptions) {
+            extend(Ctor.extendOptions, modifiedOptions);
+          }
+          options = Ctor.options = mergeOptions(superOptions, Ctor.extendOptions);
+          if (options.name) {
+            options.components[options.name] = Ctor;
+          }
+        }
+      }
+      return options
+    }
+  
+    function resolveModifiedOptions (Ctor) {
+      var modified;
+      var latest = Ctor.options;
+      var sealed = Ctor.sealedOptions;
+      for (var key in latest) {
+        if (latest[key] !== sealed[key]) {
+          if (!modified) { modified = {}; }
+          modified[key] = latest[key];
+        }
+      }
+      return modified
+    }
+  
+    function Vue (options) {
+      if (!(this instanceof Vue)
+      ) {
+        warn('Vue is a constructor and should be called with the `new` keyword');
+      }
+      this._init(options);
+    }
+  
+    initMixin(Vue);
+    stateMixin(Vue);
+    eventsMixin(Vue);
+    lifecycleMixin(Vue);
+    renderMixin(Vue);
+  
+    /*  */
+  
+    function initUse (Vue) {
+      Vue.use = function (plugin) {
+        var installedPlugins = (this._installedPlugins || (this._installedPlugins = []));
+        if (installedPlugins.indexOf(plugin) > -1) {
+          return this
+        }
+  
+        // additional parameters
+        var args = toArray(arguments, 1);
+        args.unshift(this);
+        if (typeof plugin.install === 'function') {
+          plugin.install.apply(plugin, args);
+        } else if (typeof plugin === 'function') {
+          plugin.apply(null, args);
+        }
+        installedPlugins.push(plugin);
+        return this
+      };
+    }
+  
+    /*  */
+  
+    function initMixin$1 (Vue) {
+      Vue.mixin = function (mixin) {
+        this.options = mergeOptions(this.options, mixin);
+        return this
+      };
+    }
+  
+    /*  */
+  
+    function initExtend (Vue) {
+      /**
+       * Each instance constructor, including Vue, has a unique
+       * cid. This enables us to create wrapped "child
+       * constructors" for prototypal inheritance and cache them.
+       */
+      Vue.cid = 0;
+      var cid = 1;
+  
+      /**
+       * Class inheritance
+       */
+      Vue.extend = function (extendOptions) {
+        extendOptions = extendOptions || {};
+        var Super = this;
+        var SuperId = Super.cid;
+        var cachedCtors = extendOptions._Ctor || (extendOptions._Ctor = {});
+        if (cachedCtors[SuperId]) {
+          return cachedCtors[SuperId]
+        }
+  
+        var name = extendOptions.name || Super.options.name;
+        if (name) {
+          validateComponentName(name);
+        }
+  
+        var Sub = function VueComponent (options) {
+          this._init(options);
+        };
+        Sub.prototype = Object.create(Super.prototype);
+        Sub.prototype.constructor = Sub;
+        Sub.cid = cid++;
+        Sub.options = mergeOptions(
+          Super.options,
+          extendOptions
+        );
+        Sub['super'] = Super;
+  
+        // For props and computed properties, we define the proxy getters on
+        // the Vue instances at extension time, on the extended prototype. This
+        // avoids Object.defineProperty calls for each instance created.
+        if (Sub.options.props) {
+          initProps$1(Sub);
+        }
+        if (Sub.options.computed) {
+          initComputed$1(Sub);
+        }
+  
+        // allow further extension/mixin/plugin usage
+        Sub.extend = Super.extend;
+        Sub.mixin = Super.mixin;
+        Sub.use = Super.use;
+  
+        // create asset registers, so extended classes
+        // can have their private assets too.
+        ASSET_TYPES.forEach(function (type) {
+          Sub[type] = Super[type];
+        });
+        // enable recursive self-lookup
+        if (name) {
+          Sub.options.components[name] = Sub;
+        }
+  
+        // keep a reference to the super options at extension time.
+        // later at instantiation we can check if Super's options have
+        // been updated.
+        Sub.superOptions = Super.options;
+        Sub.extendOptions = extendOptions;
+        Sub.sealedOptions = extend({}, Sub.options);
+  
+        // cache constructor
+        cachedCtors[SuperId] = Sub;
+        return Sub
+      };
+    }
+  
+    function initProps$1 (Comp) {
+      var props = Comp.options.props;
+      for (var key in props) {
+        proxy(Comp.prototype, "_props", key);
+      }
+    }
+  
+    function initComputed$1 (Comp) {
+      var computed = Comp.options.computed;
+      for (var key in computed) {
+        defineComputed(Comp.prototype, key, computed[key]);
+      }
+    }
+  
+    /*  */
+  
+    function initAssetRegisters (Vue) {
+      /**
+       * Create asset registration methods.
+       */
+      ASSET_TYPES.forEach(function (type) {
+        Vue[type] = function (
+          id,
+          definition
+        ) {
+          if (!definition) {
+            return this.options[type + 's'][id]
+          } else {
+            /* istanbul ignore if */
+            if (type === 'component') {
+              validateComponentName(id);
+            }
+            if (type === 'component' && isPlainObject(definition)) {
+              definition.name = definition.name || id;
+              definition = this.options._base.extend(definition);
+            }
+            if (type === 'directive' && typeof definition === 'function') {
+              definition = { bind: definition, update: definition };
+            }
+            this.options[type + 's'][id] = definition;
+            return definition
+          }
+        };
+      });
+    }
+  
+    /*  */
+  
+  
+  
+    function getComponentName (opts) {
+      return opts && (opts.Ctor.options.name || opts.tag)
+    }
+  
+    function matches (pattern, name) {
+      if (Array.isArray(pattern)) {
+        return pattern.indexOf(name) > -1
+      } else if (typeof pattern === 'string') {
+        return pattern.split(',').indexOf(name) > -1
+      } else if (isRegExp(pattern)) {
+        return pattern.test(name)
+      }
+      /* istanbul ignore next */
+      return false
+    }
+  
+    function pruneCache (keepAliveInstance, filter) {
+      var cache = keepAliveInstance.cache;
+      var keys = keepAliveInstance.keys;
+      var _vnode = keepAliveInstance._vnode;
+      for (var key in cache) {
+        var cachedNode = cache[key];
+        if (cachedNode) {
+          var name = getComponentName(cachedNode.componentOptions);
+          if (name && !filter(name)) {
+            pruneCacheEntry(cache, key, keys, _vnode);
+          }
+        }
+      }
+    }
+  
+    function pruneCacheEntry (
+      cache,
+      key,
+      keys,
+      current
+    ) {
+      var cached$$1 = cache[key];
+      if (cached$$1 && (!current || cached$$1.tag !== current.tag)) {
+        cached$$1.componentInstance.$destroy();
+      }
+      cache[key] = null;
+      remove(keys, key);
+    }
+  
+    var patternTypes = [String, RegExp, Array];
+  
+    var KeepAlive = {
+      name: 'keep-alive',
+      abstract: true,
+  
+      props: {
+        include: patternTypes,
+        exclude: patternTypes,
+        max: [String, Number]
+      },
+  
+      created: function created () {
+        this.cache = Object.create(null);
+        this.keys = [];
+      },
+  
+      destroyed: function destroyed () {
+        for (var key in this.cache) {
+          pruneCacheEntry(this.cache, key, this.keys);
+        }
+      },
+  
+      mounted: function mounted () {
+        var this$1 = this;
+  
+        this.$watch('include', function (val) {
+          pruneCache(this$1, function (name) { return matches(val, name); });
+        });
+        this.$watch('exclude', function (val) {
+          pruneCache(this$1, function (name) { return !matches(val, name); });
+        });
+      },
+  
+      render: function render () {
+        var slot = this.$slots.default;
+        var vnode = getFirstComponentChild(slot);
+        var componentOptions = vnode && vnode.componentOptions;
+        if (componentOptions) {
+          // check pattern
+          var name = getComponentName(componentOptions);
+          var ref = this;
+          var include = ref.include;
+          var exclude = ref.exclude;
+          if (
+            // not included
+            (include && (!name || !matches(include, name))) ||
+            // excluded
+            (exclude && name && matches(exclude, name))
+          ) {
+            return vnode
+          }
+  
+          var ref$1 = this;
+          var cache = ref$1.cache;
+          var keys = ref$1.keys;
+          var key = vnode.key == null
+            // same constructor may get registered as different local components
+            // so cid alone is not enough (#3269)
+            ? componentOptions.Ctor.cid + (componentOptions.tag ? ("::" + (componentOptions.tag)) : '')
+            : vnode.key;
+          if (cache[key]) {
+            vnode.componentInstance = cache[key].componentInstance;
+            // make current key freshest
+            remove(keys, key);
+            keys.push(key);
+          } else {
+            cache[key] = vnode;
+            keys.push(key);
+            // prune oldest entry
+            if (this.max && keys.length > parseInt(this.max)) {
+              pruneCacheEntry(cache, keys[0], keys, this._vnode);
+            }
+          }
+  
+          vnode.data.keepAlive = true;
+        }
+        return vnode || (slot && slot[0])
+      }
+    };
+  
+    var builtInComponents = {
+      KeepAlive: KeepAlive
+    };
+  
+    /*  */
+  
+    function initGlobalAPI (Vue) {
+      // config
+      var configDef = {};
+      configDef.get = function () { return config; };
+      {
+        configDef.set = function () {
+          warn(
+            'Do not replace the Vue.config object, set individual fields instead.'
+          );
+        };
+      }
+      Object.defineProperty(Vue, 'config', configDef);
+  
+      // exposed util methods.
+      // NOTE: these are not considered part of the public API - avoid relying on
+      // them unless you are aware of the risk.
+      Vue.util = {
+        warn: warn,
+        extend: extend,
+        mergeOptions: mergeOptions,
+        defineReactive: defineReactive$$1
+      };
+  
+      Vue.set = set;
+      Vue.delete = del;
+      Vue.nextTick = nextTick;
+  
+      // 2.6 explicit observable API
+      Vue.observable = function (obj) {
+        observe(obj);
+        return obj
+      };
+  
+      Vue.options = Object.create(null);
+      ASSET_TYPES.forEach(function (type) {
+        Vue.options[type + 's'] = Object.create(null);
+      });
+  
+      // this is used to identify the "base" constructor to extend all plain-object
+      // components with in Weex's multi-instance scenarios.
+      Vue.options._base = Vue;
+  
+      extend(Vue.options.components, builtInComponents);
+  
+      initUse(Vue);
+      initMixin$1(Vue);
+      initExtend(Vue);
+      initAssetRegisters(Vue);
+    }
+  
+    initGlobalAPI(Vue);
+  
+    Object.defineProperty(Vue.prototype, '$isServer', {
+      get: isServerRendering
+    });
+  
+    Object.defineProperty(Vue.prototype, '$ssrContext', {
+      get: function get () {
+        /* istanbul ignore next */
+        return this.$vnode && this.$vnode.ssrContext
+      }
+    });
+  
+    // expose FunctionalRenderContext for ssr runtime helper installation
+    Object.defineProperty(Vue, 'FunctionalRenderContext', {
+      value: FunctionalRenderContext
+    });
+  
+    Vue.version = '2.6.10';
+  
+    /*  */
+  
+    // these are reserved for web because they are directly compiled away
+    // during template compilation
+    var isReservedAttr = makeMap('style,class');
+  
+    // attributes that should be using props for binding
+    var acceptValue = makeMap('input,textarea,option,select,progress');
+    var mustUseProp = function (tag, type, attr) {
+      return (
+        (attr === 'value' && acceptValue(tag)) && type !== 'button' ||
+        (attr === 'selected' && tag === 'option') ||
+        (attr === 'checked' && tag === 'input') ||
+        (attr === 'muted' && tag === 'video')
+      )
+    };
+  
+    var isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck');
+  
+    var isValidContentEditableValue = makeMap('events,caret,typing,plaintext-only');
+  
+    var convertEnumeratedValue = function (key, value) {
+      return isFalsyAttrValue(value) || value === 'false'
+        ? 'false'
+        // allow arbitrary string value for contenteditable
+        : key === 'contenteditable' && isValidContentEditableValue(value)
+          ? value
+          : 'true'
+    };
+  
+    var isBooleanAttr = makeMap(
+      'allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' +
+      'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' +
+      'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' +
+      'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' +
+      'required,reversed,scoped,seamless,selected,sortable,translate,' +
+      'truespeed,typemustmatch,visible'
+    );
+  
+    var xlinkNS = 'http://www.w3.org/1999/xlink';
+  
+    var isXlink = function (name) {
+      return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink'
+    };
+  
+    var getXlinkProp = function (name) {
+      return isXlink(name) ? name.slice(6, name.length) : ''
+    };
+  
+    var isFalsyAttrValue = function (val) {
+      return val == null || val === false
+    };
+  
+    /*  */
+  
+    function genClassForVnode (vnode) {
+      var data = vnode.data;
+      var parentNode = vnode;
+      var childNode = vnode;
+      while (isDef(childNode.componentInstance)) {
+        childNode = childNode.componentInstance._vnode;
+        if (childNode && childNode.data) {
+          data = mergeClassData(childNode.data, data);
+        }
+      }
+      while (isDef(parentNode = parentNode.parent)) {
+        if (parentNode && parentNode.data) {
+          data = mergeClassData(data, parentNode.data);
+        }
+      }
+      return renderClass(data.staticClass, data.class)
+    }
+  
+    function mergeClassData (child, parent) {
+      return {
+        staticClass: concat(child.staticClass, parent.staticClass),
+        class: isDef(child.class)
+          ? [child.class, parent.class]
+          : parent.class
+      }
+    }
+  
+    function renderClass (
+      staticClass,
+      dynamicClass
+    ) {
+      if (isDef(staticClass) || isDef(dynamicClass)) {
+        return concat(staticClass, stringifyClass(dynamicClass))
+      }
+      /* istanbul ignore next */
+      return ''
+    }
+  
+    function concat (a, b) {
+      return a ? b ? (a + ' ' + b) : a : (b || '')
+    }
+  
+    function stringifyClass (value) {
+      if (Array.isArray(value)) {
+        return stringifyArray(value)
+      }
+      if (isObject(value)) {
+        return stringifyObject(value)
+      }
+      if (typeof value === 'string') {
+        return value
+      }
+      /* istanbul ignore next */
+      return ''
+    }
+  
+    function stringifyArray (value) {
+      var res = '';
+      var stringified;
+      for (var i = 0, l = value.length; i < l; i++) {
+        if (isDef(stringified = stringifyClass(value[i])) && stringified !== '') {
+          if (res) { res += ' '; }
+          res += stringified;
+        }
+      }
+      return res
+    }
+  
+    function stringifyObject (value) {
+      var res = '';
+      for (var key in value) {
+        if (value[key]) {
+          if (res) { res += ' '; }
+          res += key;
+        }
+      }
+      return res
+    }
+  
+    /*  */
+  
+    var namespaceMap = {
+      svg: 'http://www.w3.org/2000/svg',
+      math: 'http://www.w3.org/1998/Math/MathML'
+    };
+  
+    var isHTMLTag = makeMap(
+      'html,body,base,head,link,meta,style,title,' +
+      'address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,' +
+      'div,dd,dl,dt,figcaption,figure,picture,hr,img,li,main,ol,p,pre,ul,' +
+      'a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,' +
+      's,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video,' +
+      'embed,object,param,source,canvas,script,noscript,del,ins,' +
+      'caption,col,colgroup,table,thead,tbody,td,th,tr,' +
+      'button,datalist,fieldset,form,input,label,legend,meter,optgroup,option,' +
+      'output,progress,select,textarea,' +
+      'details,dialog,menu,menuitem,summary,' +
+      'content,element,shadow,template,blockquote,iframe,tfoot'
+    );
+  
+    // this map is intentionally selective, only covering SVG elements that may
+    // contain child elements.
+    var isSVG = makeMap(
+      'svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,font-face,' +
+      'foreignObject,g,glyph,image,line,marker,mask,missing-glyph,path,pattern,' +
+      'polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view',
+      true
+    );
+  
+    var isPreTag = function (tag) { return tag === 'pre'; };
+  
+    var isReservedTag = function (tag) {
+      return isHTMLTag(tag) || isSVG(tag)
+    };
+  
+    function getTagNamespace (tag) {
+      if (isSVG(tag)) {
+        return 'svg'
+      }
+      // basic support for MathML
+      // note it doesn't support other MathML elements being component roots
+      if (tag === 'math') {
+        return 'math'
+      }
+    }
+  
+    var unknownElementCache = Object.create(null);
+    function isUnknownElement (tag) {
+      /* istanbul ignore if */
+      if (!inBrowser) {
+        return true
+      }
+      if (isReservedTag(tag)) {
+        return false
+      }
+      tag = tag.toLowerCase();
+      /* istanbul ignore if */
+      if (unknownElementCache[tag] != null) {
+        return unknownElementCache[tag]
+      }
+      var el = document.createElement(tag);
+      if (tag.indexOf('-') > -1) {
+        // http://stackoverflow.com/a/28210364/1070244
+        return (unknownElementCache[tag] = (
+          el.constructor === window.HTMLUnknownElement ||
+          el.constructor === window.HTMLElement
+        ))
+      } else {
+        return (unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString()))
+      }
+    }
+  
+    var isTextInputType = makeMap('text,number,password,search,email,tel,url');
+  
+    /*  */
+  
+    /**
+     * Query an element selector if it's not an element already.
+     */
+    function query (el) {
+      if (typeof el === 'string') {
+        var selected = document.querySelector(el);
+        if (!selected) {
+          warn(
+            'Cannot find element: ' + el
+          );
+          return document.createElement('div')
+        }
+        return selected
+      } else {
+        return el
+      }
+    }
+  
+    /*  */
+  
+    function createElement$1 (tagName, vnode) {
+      var elm = document.createElement(tagName);
+      if (tagName !== 'select') {
+        return elm
+      }
+      // false or null will remove the attribute but undefined will not
+      if (vnode.data && vnode.data.attrs && vnode.data.attrs.multiple !== undefined) {
+        elm.setAttribute('multiple', 'multiple');
+      }
+      return elm
+    }
+  
+    function createElementNS (namespace, tagName) {
+      return document.createElementNS(namespaceMap[namespace], tagName)
+    }
+  
+    function createTextNode (text) {
+      return document.createTextNode(text)
+    }
+  
+    function createComment (text) {
+      return document.createComment(text)
+    }
+  
+    function insertBefore (parentNode, newNode, referenceNode) {
+      parentNode.insertBefore(newNode, referenceNode);
+    }
+  
+    function removeChild (node, child) {
+      node.removeChild(child);
+    }
+  
+    function appendChild (node, child) {
+      node.appendChild(child);
+    }
+  
+    function parentNode (node) {
+      return node.parentNode
+    }
+  
+    function nextSibling (node) {
+      return node.nextSibling
+    }
+  
+    function tagName (node) {
+      return node.tagName
+    }
+  
+    function setTextContent (node, text) {
+      node.textContent = text;
+    }
+  
+    function setStyleScope (node, scopeId) {
+      node.setAttribute(scopeId, '');
+    }
+  
+    var nodeOps = /*#__PURE__*/Object.freeze({
+      createElement: createElement$1,
+      createElementNS: createElementNS,
+      createTextNode: createTextNode,
+      createComment: createComment,
+      insertBefore: insertBefore,
+      removeChild: removeChild,
+      appendChild: appendChild,
+      parentNode: parentNode,
+      nextSibling: nextSibling,
+      tagName: tagName,
+      setTextContent: setTextContent,
+      setStyleScope: setStyleScope
+    });
+  
+    /*  */
+  
+    var ref = {
+      create: function create (_, vnode) {
+        registerRef(vnode);
+      },
+      update: function update (oldVnode, vnode) {
+        if (oldVnode.data.ref !== vnode.data.ref) {
+          registerRef(oldVnode, true);
+          registerRef(vnode);
+        }
+      },
+      destroy: function destroy (vnode) {
+        registerRef(vnode, true);
+      }
+    };
+  
+    function registerRef (vnode, isRemoval) {
+      var key = vnode.data.ref;
+      if (!isDef(key)) { return }
+  
+      var vm = vnode.context;
+      var ref = vnode.componentInstance || vnode.elm;
+      var refs = vm.$refs;
+      if (isRemoval) {
+        if (Array.isArray(refs[key])) {
+          remove(refs[key], ref);
+        } else if (refs[key] === ref) {
+          refs[key] = undefined;
+        }
+      } else {
+        if (vnode.data.refInFor) {
+          if (!Array.isArray(refs[key])) {
+            refs[key] = [ref];
+          } else if (refs[key].indexOf(ref) < 0) {
+            // $flow-disable-line
+            refs[key].push(ref);
+          }
+        } else {
+          refs[key] = ref;
+        }
+      }
+    }
+  
+    /**
+     * Virtual DOM patching algorithm based on Snabbdom by
+     * Simon Friis Vindum (@paldepind)
+     * Licensed under the MIT License
+     * https://github.com/paldepind/snabbdom/blob/master/LICENSE
+     *
+     * modified by Evan You (@yyx990803)
+     *
+     * Not type-checking this because this file is perf-critical and the cost
+     * of making flow understand it is not worth it.
+     */
+  
+    var emptyNode = new VNode('', {}, []);
+  
+    var hooks = ['create', 'activate', 'update', 'remove', 'destroy'];
+  
+    function sameVnode (a, b) {
+      return (
+        a.key === b.key && (
+          (
+            a.tag === b.tag &&
+            a.isComment === b.isComment &&
+            isDef(a.data) === isDef(b.data) &&
+            sameInputType(a, b)
+          ) || (
+            isTrue(a.isAsyncPlaceholder) &&
+            a.asyncFactory === b.asyncFactory &&
+            isUndef(b.asyncFactory.error)
+          )
+        )
+      )
+    }
+  
+    function sameInputType (a, b) {
+      if (a.tag !== 'input') { return true }
+      var i;
+      var typeA = isDef(i = a.data) && isDef(i = i.attrs) && i.type;
+      var typeB = isDef(i = b.data) && isDef(i = i.attrs) && i.type;
+      return typeA === typeB || isTextInputType(typeA) && isTextInputType(typeB)
+    }
+  
+    function createKeyToOldIdx (children, beginIdx, endIdx) {
+      var i, key;
+      var map = {};
+      for (i = beginIdx; i <= endIdx; ++i) {
+        key = children[i].key;
+        if (isDef(key)) { map[key] = i; }
+      }
+      return map
+    }
+  
+    function createPatchFunction (backend) {
+      var i, j;
+      var cbs = {};
+  
+      var modules = backend.modules;
+      var nodeOps = backend.nodeOps;
+  
+      for (i = 0; i < hooks.length; ++i) {
+        cbs[hooks[i]] = [];
+        for (j = 0; j < modules.length; ++j) {
+          if (isDef(modules[j][hooks[i]])) {
+            cbs[hooks[i]].push(modules[j][hooks[i]]);
+          }
+        }
+      }
+  
+      function emptyNodeAt (elm) {
+        return new VNode(nodeOps.tagName(elm).toLowerCase(), {}, [], undefined, elm)
+      }
+  
+      function createRmCb (childElm, listeners) {
+        function remove$$1 () {
+          if (--remove$$1.listeners === 0) {
+            removeNode(childElm);
+          }
+        }
+        remove$$1.listeners = listeners;
+        return remove$$1
+      }
+  
+      function removeNode (el) {
+        var parent = nodeOps.parentNode(el);
+        // element may have already been removed due to v-html / v-text
+        if (isDef(parent)) {
+          nodeOps.removeChild(parent, el);
+        }
+      }
+  
+      function isUnknownElement$$1 (vnode, inVPre) {
+        return (
+          !inVPre &&
+          !vnode.ns &&
+          !(
+            config.ignoredElements.length &&
+            config.ignoredElements.some(function (ignore) {
+              return isRegExp(ignore)
+                ? ignore.test(vnode.tag)
+                : ignore === vnode.tag
+            })
+          ) &&
+          config.isUnknownElement(vnode.tag)
+        )
+      }
+  
+      var creatingElmInVPre = 0;
+  
+      function createElm (
+        vnode,
+        insertedVnodeQueue,
+        parentElm,
+        refElm,
+        nested,
+        ownerArray,
+        index
+      ) {
+        if (isDef(vnode.elm) && isDef(ownerArray)) {
+          // This vnode was used in a previous render!
+          // now it's used as a new node, overwriting its elm would cause
+          // potential patch errors down the road when it's used as an insertion
+          // reference node. Instead, we clone the node on-demand before creating
+          // associated DOM element for it.
+          vnode = ownerArray[index] = cloneVNode(vnode);
+        }
+  
+        vnode.isRootInsert = !nested; // for transition enter check
+        if (createComponent(vnode, insertedVnodeQueue, parentElm, refElm)) {
+          return
+        }
+  
+        var data = vnode.data;
+        var children = vnode.children;
+        var tag = vnode.tag;
+        if (isDef(tag)) {
+          {
+            if (data && data.pre) {
+              creatingElmInVPre++;
+            }
+            if (isUnknownElement$$1(vnode, creatingElmInVPre)) {
+              warn(
+                'Unknown custom element: <' + tag + '> - did you ' +
+                'register the component correctly? For recursive components, ' +
+                'make sure to provide the "name" option.',
+                vnode.context
+              );
+            }
+          }
+  
+          vnode.elm = vnode.ns
+            ? nodeOps.createElementNS(vnode.ns, tag)
+            : nodeOps.createElement(tag, vnode);
+          setScope(vnode);
+  
+          /* istanbul ignore if */
+          {
+            createChildren(vnode, children, insertedVnodeQueue);
+            if (isDef(data)) {
+              invokeCreateHooks(vnode, insertedVnodeQueue);
+            }
+            insert(parentElm, vnode.elm, refElm);
+          }
+  
+          if (data && data.pre) {
+            creatingElmInVPre--;
+          }
+        } else if (isTrue(vnode.isComment)) {
+          vnode.elm = nodeOps.createComment(vnode.text);
+          insert(parentElm, vnode.elm, refElm);
+        } else {
+          vnode.elm = nodeOps.createTextNode(vnode.text);
+          insert(parentElm, vnode.elm, refElm);
+        }
+      }
+  
+      function createComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
+        var i = vnode.data;
+        if (isDef(i)) {
+          var isReactivated = isDef(vnode.componentInstance) && i.keepAlive;
+          if (isDef(i = i.hook) && isDef(i = i.init)) {
+            i(vnode, false /* hydrating */);
+          }
+          // after calling the init hook, if the vnode is a child component
+          // it should've created a child instance and mounted it. the child
+          // component also has set the placeholder vnode's elm.
+          // in that case we can just return the element and be done.
+          if (isDef(vnode.componentInstance)) {
+            initComponent(vnode, insertedVnodeQueue);
+            insert(parentElm, vnode.elm, refElm);
+            if (isTrue(isReactivated)) {
+              reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm);
+            }
+            return true
+          }
+        }
+      }
+  
+      function initComponent (vnode, insertedVnodeQueue) {
+        if (isDef(vnode.data.pendingInsert)) {
+          insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert);
+          vnode.data.pendingInsert = null;
+        }
+        vnode.elm = vnode.componentInstance.$el;
+        if (isPatchable(vnode)) {
+          invokeCreateHooks(vnode, insertedVnodeQueue);
+          setScope(vnode);
+        } else {
+          // empty component root.
+          // skip all element-related modules except for ref (#3455)
+          registerRef(vnode);
+          // make sure to invoke the insert hook
+          insertedVnodeQueue.push(vnode);
+        }
+      }
+  
+      function reactivateComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
+        var i;
+        // hack for #4339: a reactivated component with inner transition
+        // does not trigger because the inner node's created hooks are not called
+        // again. It's not ideal to involve module-specific logic in here but
+        // there doesn't seem to be a better way to do it.
+        var innerNode = vnode;
+        while (innerNode.componentInstance) {
+          innerNode = innerNode.componentInstance._vnode;
+          if (isDef(i = innerNode.data) && isDef(i = i.transition)) {
+            for (i = 0; i < cbs.activate.length; ++i) {
+              cbs.activate[i](emptyNode, innerNode);
+            }
+            insertedVnodeQueue.push(innerNode);
+            break
+          }
+        }
+        // unlike a newly created component,
+        // a reactivated keep-alive component doesn't insert itself
+        insert(parentElm, vnode.elm, refElm);
+      }
+  
+      function insert (parent, elm, ref$$1) {
+        if (isDef(parent)) {
+          if (isDef(ref$$1)) {
+            if (nodeOps.parentNode(ref$$1) === parent) {
+              nodeOps.insertBefore(parent, elm, ref$$1);
+            }
+          } else {
+            nodeOps.appendChild(parent, elm);
+          }
+        }
+      }
+  
+      function createChildren (vnode, children, insertedVnodeQueue) {
+        if (Array.isArray(children)) {
+          {
+            checkDuplicateKeys(children);
+          }
+          for (var i = 0; i < children.length; ++i) {
+            createElm(children[i], insertedVnodeQueue, vnode.elm, null, true, children, i);
+          }
+        } else if (isPrimitive(vnode.text)) {
+          nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(String(vnode.text)));
+        }
+      }
+  
+      function isPatchable (vnode) {
+        while (vnode.componentInstance) {
+          vnode = vnode.componentInstance._vnode;
+        }
+        return isDef(vnode.tag)
+      }
+  
+      function invokeCreateHooks (vnode, insertedVnodeQueue) {
+        for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
+          cbs.create[i$1](emptyNode, vnode);
+        }
+        i = vnode.data.hook; // Reuse variable
+        if (isDef(i)) {
+          if (isDef(i.create)) { i.create(emptyNode, vnode); }
+          if (isDef(i.insert)) { insertedVnodeQueue.push(vnode); }
+        }
+      }
+  
+      // set scope id attribute for scoped CSS.
+      // this is implemented as a special case to avoid the overhead
+      // of going through the normal attribute patching process.
+      function setScope (vnode) {
+        var i;
+        if (isDef(i = vnode.fnScopeId)) {
+          nodeOps.setStyleScope(vnode.elm, i);
+        } else {
+          var ancestor = vnode;
+          while (ancestor) {
+            if (isDef(i = ancestor.context) && isDef(i = i.$options._scopeId)) {
+              nodeOps.setStyleScope(vnode.elm, i);
+            }
+            ancestor = ancestor.parent;
+          }
+        }
+        // for slot content they should also get the scopeId from the host instance.
+        if (isDef(i = activeInstance) &&
+          i !== vnode.context &&
+          i !== vnode.fnContext &&
+          isDef(i = i.$options._scopeId)
+        ) {
+          nodeOps.setStyleScope(vnode.elm, i);
+        }
+      }
+  
+      function addVnodes (parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) {
+        for (; startIdx <= endIdx; ++startIdx) {
+          createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm, false, vnodes, startIdx);
+        }
+      }
+  
+      function invokeDestroyHook (vnode) {
+        var i, j;
+        var data = vnode.data;
+        if (isDef(data)) {
+          if (isDef(i = data.hook) && isDef(i = i.destroy)) { i(vnode); }
+          for (i = 0; i < cbs.destroy.length; ++i) { cbs.destroy[i](vnode); }
+        }
+        if (isDef(i = vnode.children)) {
+          for (j = 0; j < vnode.children.length; ++j) {
+            invokeDestroyHook(vnode.children[j]);
+          }
+        }
+      }
+  
+      function removeVnodes (parentElm, vnodes, startIdx, endIdx) {
+        for (; startIdx <= endIdx; ++startIdx) {
+          var ch = vnodes[startIdx];
+          if (isDef(ch)) {
+            if (isDef(ch.tag)) {
+              removeAndInvokeRemoveHook(ch);
+              invokeDestroyHook(ch);
+            } else { // Text node
+              removeNode(ch.elm);
+            }
+          }
+        }
+      }
+  
+      function removeAndInvokeRemoveHook (vnode, rm) {
+        if (isDef(rm) || isDef(vnode.data)) {
+          var i;
+          var listeners = cbs.remove.length + 1;
+          if (isDef(rm)) {
+            // we have a recursively passed down rm callback
+            // increase the listeners count
+            rm.listeners += listeners;
+          } else {
+            // directly removing
+            rm = createRmCb(vnode.elm, listeners);
+          }
+          // recursively invoke hooks on child component root node
+          if (isDef(i = vnode.componentInstance) && isDef(i = i._vnode) && isDef(i.data)) {
+            removeAndInvokeRemoveHook(i, rm);
+          }
+          for (i = 0; i < cbs.remove.length; ++i) {
+            cbs.remove[i](vnode, rm);
+          }
+          if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) {
+            i(vnode, rm);
+          } else {
+            rm();
+          }
+        } else {
+          removeNode(vnode.elm);
+        }
+      }
+  
+      function updateChildren (parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) {
+        var oldStartIdx = 0;
+        var newStartIdx = 0;
+        var oldEndIdx = oldCh.length - 1;
+        var oldStartVnode = oldCh[0];
+        var oldEndVnode = oldCh[oldEndIdx];
+        var newEndIdx = newCh.length - 1;
+        var newStartVnode = newCh[0];
+        var newEndVnode = newCh[newEndIdx];
+        var oldKeyToIdx, idxInOld, vnodeToMove, refElm;
+  
+        // removeOnly is a special flag used only by <transition-group>
+        // to ensure removed elements stay in correct relative positions
+        // during leaving transitions
+        var canMove = !removeOnly;
+  
+        {
+          checkDuplicateKeys(newCh);
+        }
+  
+        while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {
+          if (isUndef(oldStartVnode)) {
+            oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left
+          } else if (isUndef(oldEndVnode)) {
+            oldEndVnode = oldCh[--oldEndIdx];
+          } else if (sameVnode(oldStartVnode, newStartVnode)) {
+            patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
+            oldStartVnode = oldCh[++oldStartIdx];
+            newStartVnode = newCh[++newStartIdx];
+          } else if (sameVnode(oldEndVnode, newEndVnode)) {
+            patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
+            oldEndVnode = oldCh[--oldEndIdx];
+            newEndVnode = newCh[--newEndIdx];
+          } else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right
+            patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
+            canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm));
+            oldStartVnode = oldCh[++oldStartIdx];
+            newEndVnode = newCh[--newEndIdx];
+          } else if (sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left
+            patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
+            canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm);
+            oldEndVnode = oldCh[--oldEndIdx];
+            newStartVnode = newCh[++newStartIdx];
+          } else {
+            if (isUndef(oldKeyToIdx)) { oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx); }
+            idxInOld = isDef(newStartVnode.key)
+              ? oldKeyToIdx[newStartVnode.key]
+              : findIdxInOld(newStartVnode, oldCh, oldStartIdx, oldEndIdx);
+            if (isUndef(idxInOld)) { // New element
+              createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
+            } else {
+              vnodeToMove = oldCh[idxInOld];
+              if (sameVnode(vnodeToMove, newStartVnode)) {
+                patchVnode(vnodeToMove, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
+                oldCh[idxInOld] = undefined;
+                canMove && nodeOps.insertBefore(parentElm, vnodeToMove.elm, oldStartVnode.elm);
+              } else {
+                // same key but different element. treat as new element
+                createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
+              }
+            }
+            newStartVnode = newCh[++newStartIdx];
+          }
+        }
+        if (oldStartIdx > oldEndIdx) {
+          refElm = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
+          addVnodes(parentElm, refElm, newCh, newStartIdx, newEndIdx, insertedVnodeQueue);
+        } else if (newStartIdx > newEndIdx) {
+          removeVnodes(parentElm, oldCh, oldStartIdx, oldEndIdx);
+        }
+      }
+  
+      function checkDuplicateKeys (children) {
+        var seenKeys = {};
+        for (var i = 0; i < children.length; i++) {
+          var vnode = children[i];
+          var key = vnode.key;
+          if (isDef(key)) {
+            if (seenKeys[key]) {
+              warn(
+                ("Duplicate keys detected: '" + key + "'. This may cause an update error."),
+                vnode.context
+              );
+            } else {
+              seenKeys[key] = true;
+            }
+          }
+        }
+      }
+  
+      function findIdxInOld (node, oldCh, start, end) {
+        for (var i = start; i < end; i++) {
+          var c = oldCh[i];
+          if (isDef(c) && sameVnode(node, c)) { return i }
+        }
+      }
+  
+      function patchVnode (
+        oldVnode,
+        vnode,
+        insertedVnodeQueue,
+        ownerArray,
+        index,
+        removeOnly
+      ) {
+        if (oldVnode === vnode) {
+          return
+        }
+  
+        if (isDef(vnode.elm) && isDef(ownerArray)) {
+          // clone reused vnode
+          vnode = ownerArray[index] = cloneVNode(vnode);
+        }
+  
+        var elm = vnode.elm = oldVnode.elm;
+  
+        if (isTrue(oldVnode.isAsyncPlaceholder)) {
+          if (isDef(vnode.asyncFactory.resolved)) {
+            hydrate(oldVnode.elm, vnode, insertedVnodeQueue);
+          } else {
+            vnode.isAsyncPlaceholder = true;
+          }
+          return
+        }
+  
+        // reuse element for static trees.
+        // note we only do this if the vnode is cloned -
+        // if the new node is not cloned it means the render functions have been
+        // reset by the hot-reload-api and we need to do a proper re-render.
+        if (isTrue(vnode.isStatic) &&
+          isTrue(oldVnode.isStatic) &&
+          vnode.key === oldVnode.key &&
+          (isTrue(vnode.isCloned) || isTrue(vnode.isOnce))
+        ) {
+          vnode.componentInstance = oldVnode.componentInstance;
+          return
+        }
+  
+        var i;
+        var data = vnode.data;
+        if (isDef(data) && isDef(i = data.hook) && isDef(i = i.prepatch)) {
+          i(oldVnode, vnode);
+        }
+  
+        var oldCh = oldVnode.children;
+        var ch = vnode.children;
+        if (isDef(data) && isPatchable(vnode)) {
+          for (i = 0; i < cbs.update.length; ++i) { cbs.update[i](oldVnode, vnode); }
+          if (isDef(i = data.hook) && isDef(i = i.update)) { i(oldVnode, vnode); }
+        }
+        if (isUndef(vnode.text)) {
+          if (isDef(oldCh) && isDef(ch)) {
+            if (oldCh !== ch) { updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly); }
+          } else if (isDef(ch)) {
+            {
+              checkDuplicateKeys(ch);
+            }
+            if (isDef(oldVnode.text)) { nodeOps.setTextContent(elm, ''); }
+            addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue);
+          } else if (isDef(oldCh)) {
+            removeVnodes(elm, oldCh, 0, oldCh.length - 1);
+          } else if (isDef(oldVnode.text)) {
+            nodeOps.setTextContent(elm, '');
+          }
+        } else if (oldVnode.text !== vnode.text) {
+          nodeOps.setTextContent(elm, vnode.text);
+        }
+        if (isDef(data)) {
+          if (isDef(i = data.hook) && isDef(i = i.postpatch)) { i(oldVnode, vnode); }
+        }
+      }
+  
+      function invokeInsertHook (vnode, queue, initial) {
+        // delay insert hooks for component root nodes, invoke them after the
+        // element is really inserted
+        if (isTrue(initial) && isDef(vnode.parent)) {
+          vnode.parent.data.pendingInsert = queue;
+        } else {
+          for (var i = 0; i < queue.length; ++i) {
+            queue[i].data.hook.insert(queue[i]);
+          }
+        }
+      }
+  
+      var hydrationBailed = false;
+      // list of modules that can skip create hook during hydration because they
+      // are already rendered on the client or has no need for initialization
+      // Note: style is excluded because it relies on initial clone for future
+      // deep updates (#7063).
+      var isRenderedModule = makeMap('attrs,class,staticClass,staticStyle,key');
+  
+      // Note: this is a browser-only function so we can assume elms are DOM nodes.
+      function hydrate (elm, vnode, insertedVnodeQueue, inVPre) {
+        var i;
+        var tag = vnode.tag;
+        var data = vnode.data;
+        var children = vnode.children;
+        inVPre = inVPre || (data && data.pre);
+        vnode.elm = elm;
+  
+        if (isTrue(vnode.isComment) && isDef(vnode.asyncFactory)) {
+          vnode.isAsyncPlaceholder = true;
+          return true
+        }
+        // assert node match
+        {
+          if (!assertNodeMatch(elm, vnode, inVPre)) {
+            return false
+          }
+        }
+        if (isDef(data)) {
+          if (isDef(i = data.hook) && isDef(i = i.init)) { i(vnode, true /* hydrating */); }
+          if (isDef(i = vnode.componentInstance)) {
+            // child component. it should have hydrated its own tree.
+            initComponent(vnode, insertedVnodeQueue);
+            return true
+          }
+        }
+        if (isDef(tag)) {
+          if (isDef(children)) {
+            // empty element, allow client to pick up and populate children
+            if (!elm.hasChildNodes()) {
+              createChildren(vnode, children, insertedVnodeQueue);
+            } else {
+              // v-html and domProps: innerHTML
+              if (isDef(i = data) && isDef(i = i.domProps) && isDef(i = i.innerHTML)) {
+                if (i !== elm.innerHTML) {
+                  /* istanbul ignore if */
+                  if (typeof console !== 'undefined' &&
+                    !hydrationBailed
+                  ) {
+                    hydrationBailed = true;
+                    console.warn('Parent: ', elm);
+                    console.warn('server innerHTML: ', i);
+                    console.warn('client innerHTML: ', elm.innerHTML);
+                  }
+                  return false
+                }
+              } else {
+                // iterate and compare children lists
+                var childrenMatch = true;
+                var childNode = elm.firstChild;
+                for (var i$1 = 0; i$1 < children.length; i$1++) {
+                  if (!childNode || !hydrate(childNode, children[i$1], insertedVnodeQueue, inVPre)) {
+                    childrenMatch = false;
+                    break
+                  }
+                  childNode = childNode.nextSibling;
+                }
+                // if childNode is not null, it means the actual childNodes list is
+                // longer than the virtual children list.
+                if (!childrenMatch || childNode) {
+                  /* istanbul ignore if */
+                  if (typeof console !== 'undefined' &&
+                    !hydrationBailed
+                  ) {
+                    hydrationBailed = true;
+                    console.warn('Parent: ', elm);
+                    console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children);
+                  }
+                  return false
+                }
+              }
+            }
+          }
+          if (isDef(data)) {
+            var fullInvoke = false;
+            for (var key in data) {
+              if (!isRenderedModule(key)) {
+                fullInvoke = true;
+                invokeCreateHooks(vnode, insertedVnodeQueue);
+                break
+              }
+            }
+            if (!fullInvoke && data['class']) {
+              // ensure collecting deps for deep class bindings for future updates
+              traverse(data['class']);
+            }
+          }
+        } else if (elm.data !== vnode.text) {
+          elm.data = vnode.text;
+        }
+        return true
+      }
+  
+      function assertNodeMatch (node, vnode, inVPre) {
+        if (isDef(vnode.tag)) {
+          return vnode.tag.indexOf('vue-component') === 0 || (
+            !isUnknownElement$$1(vnode, inVPre) &&
+            vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase())
+          )
+        } else {
+          return node.nodeType === (vnode.isComment ? 8 : 3)
+        }
+      }
+  
+      return function patch (oldVnode, vnode, hydrating, removeOnly) {
+        if (isUndef(vnode)) {
+          if (isDef(oldVnode)) { invokeDestroyHook(oldVnode); }
+          return
+        }
+  
+        var isInitialPatch = false;
+        var insertedVnodeQueue = [];
+  
+        if (isUndef(oldVnode)) {
+          // empty mount (likely as component), create new root element
+          isInitialPatch = true;
+          createElm(vnode, insertedVnodeQueue);
+        } else {
+          var isRealElement = isDef(oldVnode.nodeType);
+          if (!isRealElement && sameVnode(oldVnode, vnode)) {
+            // patch existing root node
+            patchVnode(oldVnode, vnode, insertedVnodeQueue, null, null, removeOnly);
+          } else {
+            if (isRealElement) {
+              // mounting to a real element
+              // check if this is server-rendered content and if we can perform
+              // a successful hydration.
+              if (oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) {
+                oldVnode.removeAttribute(SSR_ATTR);
+                hydrating = true;
+              }
+              if (isTrue(hydrating)) {
+                if (hydrate(oldVnode, vnode, insertedVnodeQueue)) {
+                  invokeInsertHook(vnode, insertedVnodeQueue, true);
+                  return oldVnode
+                } else {
+                  warn(
+                    'The client-side rendered virtual DOM tree is not matching ' +
+                    'server-rendered content. This is likely caused by incorrect ' +
+                    'HTML markup, for example nesting block-level elements inside ' +
+                    '<p>, or missing <tbody>. Bailing hydration and performing ' +
+                    'full client-side render.'
+                  );
+                }
+              }
+              // either not server-rendered, or hydration failed.
+              // create an empty node and replace it
+              oldVnode = emptyNodeAt(oldVnode);
+            }
+  
+            // replacing existing element
+            var oldElm = oldVnode.elm;
+            var parentElm = nodeOps.parentNode(oldElm);
+  
+            // create new node
+            createElm(
+              vnode,
+              insertedVnodeQueue,
+              // extremely rare edge case: do not insert if old element is in a
+              // leaving transition. Only happens when combining transition +
+              // keep-alive + HOCs. (#4590)
+              oldElm._leaveCb ? null : parentElm,
+              nodeOps.nextSibling(oldElm)
+            );
+  
+            // update parent placeholder node element, recursively
+            if (isDef(vnode.parent)) {
+              var ancestor = vnode.parent;
+              var patchable = isPatchable(vnode);
+              while (ancestor) {
+                for (var i = 0; i < cbs.destroy.length; ++i) {
+                  cbs.destroy[i](ancestor);
+                }
+                ancestor.elm = vnode.elm;
+                if (patchable) {
+                  for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
+                    cbs.create[i$1](emptyNode, ancestor);
+                  }
+                  // #6513
+                  // invoke insert hooks that may have been merged by create hooks.
+                  // e.g. for directives that uses the "inserted" hook.
+                  var insert = ancestor.data.hook.insert;
+                  if (insert.merged) {
+                    // start at index 1 to avoid re-invoking component mounted hook
+                    for (var i$2 = 1; i$2 < insert.fns.length; i$2++) {
+                      insert.fns[i$2]();
+                    }
+                  }
+                } else {
+                  registerRef(ancestor);
+                }
+                ancestor = ancestor.parent;
+              }
+            }
+  
+            // destroy old node
+            if (isDef(parentElm)) {
+              removeVnodes(parentElm, [oldVnode], 0, 0);
+            } else if (isDef(oldVnode.tag)) {
+              invokeDestroyHook(oldVnode);
+            }
+          }
+        }
+  
+        invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch);
+        return vnode.elm
+      }
+    }
+  
+    /*  */
+  
+    var directives = {
+      create: updateDirectives,
+      update: updateDirectives,
+      destroy: function unbindDirectives (vnode) {
+        updateDirectives(vnode, emptyNode);
+      }
+    };
+  
+    function updateDirectives (oldVnode, vnode) {
+      if (oldVnode.data.directives || vnode.data.directives) {
+        _update(oldVnode, vnode);
+      }
+    }
+  
+    function _update (oldVnode, vnode) {
+      var isCreate = oldVnode === emptyNode;
+      var isDestroy = vnode === emptyNode;
+      var oldDirs = normalizeDirectives$1(oldVnode.data.directives, oldVnode.context);
+      var newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context);
+  
+      var dirsWithInsert = [];
+      var dirsWithPostpatch = [];
+  
+      var key, oldDir, dir;
+      for (key in newDirs) {
+        oldDir = oldDirs[key];
+        dir = newDirs[key];
+        if (!oldDir) {
+          // new directive, bind
+          callHook$1(dir, 'bind', vnode, oldVnode);
+          if (dir.def && dir.def.inserted) {
+            dirsWithInsert.push(dir);
+          }
+        } else {
+          // existing directive, update
+          dir.oldValue = oldDir.value;
+          dir.oldArg = oldDir.arg;
+          callHook$1(dir, 'update', vnode, oldVnode);
+          if (dir.def && dir.def.componentUpdated) {
+            dirsWithPostpatch.push(dir);
+          }
+        }
+      }
+  
+      if (dirsWithInsert.length) {
+        var callInsert = function () {
+          for (var i = 0; i < dirsWithInsert.length; i++) {
+            callHook$1(dirsWithInsert[i], 'inserted', vnode, oldVnode);
+          }
+        };
+        if (isCreate) {
+          mergeVNodeHook(vnode, 'insert', callInsert);
+        } else {
+          callInsert();
+        }
+      }
+  
+      if (dirsWithPostpatch.length) {
+        mergeVNodeHook(vnode, 'postpatch', function () {
+          for (var i = 0; i < dirsWithPostpatch.length; i++) {
+            callHook$1(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode);
+          }
+        });
+      }
+  
+      if (!isCreate) {
+        for (key in oldDirs) {
+          if (!newDirs[key]) {
+            // no longer present, unbind
+            callHook$1(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy);
+          }
+        }
+      }
+    }
+  
+    var emptyModifiers = Object.create(null);
+  
+    function normalizeDirectives$1 (
+      dirs,
+      vm
+    ) {
+      var res = Object.create(null);
+      if (!dirs) {
+        // $flow-disable-line
+        return res
+      }
+      var i, dir;
+      for (i = 0; i < dirs.length; i++) {
+        dir = dirs[i];
+        if (!dir.modifiers) {
+          // $flow-disable-line
+          dir.modifiers = emptyModifiers;
+        }
+        res[getRawDirName(dir)] = dir;
+        dir.def = resolveAsset(vm.$options, 'directives', dir.name, true);
+      }
+      // $flow-disable-line
+      return res
+    }
+  
+    function getRawDirName (dir) {
+      return dir.rawName || ((dir.name) + "." + (Object.keys(dir.modifiers || {}).join('.')))
+    }
+  
+    function callHook$1 (dir, hook, vnode, oldVnode, isDestroy) {
+      var fn = dir.def && dir.def[hook];
+      if (fn) {
+        try {
+          fn(vnode.elm, dir, vnode, oldVnode, isDestroy);
+        } catch (e) {
+          handleError(e, vnode.context, ("directive " + (dir.name) + " " + hook + " hook"));
+        }
+      }
+    }
+  
+    var baseModules = [
+      ref,
+      directives
+    ];
+  
+    /*  */
+  
+    function updateAttrs (oldVnode, vnode) {
+      var opts = vnode.componentOptions;
+      if (isDef(opts) && opts.Ctor.options.inheritAttrs === false) {
+        return
+      }
+      if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {
+        return
+      }
+      var key, cur, old;
+      var elm = vnode.elm;
+      var oldAttrs = oldVnode.data.attrs || {};
+      var attrs = vnode.data.attrs || {};
+      // clone observed objects, as the user probably wants to mutate it
+      if (isDef(attrs.__ob__)) {
+        attrs = vnode.data.attrs = extend({}, attrs);
+      }
+  
+      for (key in attrs) {
+        cur = attrs[key];
+        old = oldAttrs[key];
+        if (old !== cur) {
+          setAttr(elm, key, cur);
+        }
+      }
+      // #4391: in IE9, setting type can reset value for input[type=radio]
+      // #6666: IE/Edge forces progress value down to 1 before setting a max
+      /* istanbul ignore if */
+      if ((isIE || isEdge) && attrs.value !== oldAttrs.value) {
+        setAttr(elm, 'value', attrs.value);
+      }
+      for (key in oldAttrs) {
+        if (isUndef(attrs[key])) {
+          if (isXlink(key)) {
+            elm.removeAttributeNS(xlinkNS, getXlinkProp(key));
+          } else if (!isEnumeratedAttr(key)) {
+            elm.removeAttribute(key);
+          }
+        }
+      }
+    }
+  
+    function setAttr (el, key, value) {
+      if (el.tagName.indexOf('-') > -1) {
+        baseSetAttr(el, key, value);
+      } else if (isBooleanAttr(key)) {
+        // set attribute for blank value
+        // e.g. <option disabled>Select one</option>
+        if (isFalsyAttrValue(value)) {
+          el.removeAttribute(key);
+        } else {
+          // technically allowfullscreen is a boolean attribute for <iframe>,
+          // but Flash expects a value of "true" when used on <embed> tag
+          value = key === 'allowfullscreen' && el.tagName === 'EMBED'
+            ? 'true'
+            : key;
+          el.setAttribute(key, value);
+        }
+      } else if (isEnumeratedAttr(key)) {
+        el.setAttribute(key, convertEnumeratedValue(key, value));
+      } else if (isXlink(key)) {
+        if (isFalsyAttrValue(value)) {
+          el.removeAttributeNS(xlinkNS, getXlinkProp(key));
+        } else {
+          el.setAttributeNS(xlinkNS, key, value);
+        }
+      } else {
+        baseSetAttr(el, key, value);
+      }
+    }
+  
+    function baseSetAttr (el, key, value) {
+      if (isFalsyAttrValue(value)) {
+        el.removeAttribute(key);
+      } else {
+        // #7138: IE10 & 11 fires input event when setting placeholder on
+        // <textarea>... block the first input event and remove the blocker
+        // immediately.
+        /* istanbul ignore if */
+        if (
+          isIE && !isIE9 &&
+          el.tagName === 'TEXTAREA' &&
+          key === 'placeholder' && value !== '' && !el.__ieph
+        ) {
+          var blocker = function (e) {
+            e.stopImmediatePropagation();
+            el.removeEventListener('input', blocker);
+          };
+          el.addEventListener('input', blocker);
+          // $flow-disable-line
+          el.__ieph = true; /* IE placeholder patched */
+        }
+        el.setAttribute(key, value);
+      }
+    }
+  
+    var attrs = {
+      create: updateAttrs,
+      update: updateAttrs
+    };
+  
+    /*  */
+  
+    function updateClass (oldVnode, vnode) {
+      var el = vnode.elm;
+      var data = vnode.data;
+      var oldData = oldVnode.data;
+      if (
+        isUndef(data.staticClass) &&
+        isUndef(data.class) && (
+          isUndef(oldData) || (
+            isUndef(oldData.staticClass) &&
+            isUndef(oldData.class)
+          )
+        )
+      ) {
+        return
+      }
+  
+      var cls = genClassForVnode(vnode);
+  
+      // handle transition classes
+      var transitionClass = el._transitionClasses;
+      if (isDef(transitionClass)) {
+        cls = concat(cls, stringifyClass(transitionClass));
+      }
+  
+      // set the class
+      if (cls !== el._prevClass) {
+        el.setAttribute('class', cls);
+        el._prevClass = cls;
+      }
+    }
+  
+    var klass = {
+      create: updateClass,
+      update: updateClass
+    };
+  
+    /*  */
+  
+    var validDivisionCharRE = /[\w).+\-_$\]]/;
+  
+    function parseFilters (exp) {
+      var inSingle = false;
+      var inDouble = false;
+      var inTemplateString = false;
+      var inRegex = false;
+      var curly = 0;
+      var square = 0;
+      var paren = 0;
+      var lastFilterIndex = 0;
+      var c, prev, i, expression, filters;
+  
+      for (i = 0; i < exp.length; i++) {
+        prev = c;
+        c = exp.charCodeAt(i);
+        if (inSingle) {
+          if (c === 0x27 && prev !== 0x5C) { inSingle = false; }
+        } else if (inDouble) {
+          if (c === 0x22 && prev !== 0x5C) { inDouble = false; }
+        } else if (inTemplateString) {
+          if (c === 0x60 && prev !== 0x5C) { inTemplateString = false; }
+        } else if (inRegex) {
+          if (c === 0x2f && prev !== 0x5C) { inRegex = false; }
+        } else if (
+          c === 0x7C && // pipe
+          exp.charCodeAt(i + 1) !== 0x7C &&
+          exp.charCodeAt(i - 1) !== 0x7C &&
+          !curly && !square && !paren
+        ) {
+          if (expression === undefined) {
+            // first filter, end of expression
+            lastFilterIndex = i + 1;
+            expression = exp.slice(0, i).trim();
+          } else {
+            pushFilter();
+          }
+        } else {
+          switch (c) {
+            case 0x22: inDouble = true; break         // "
+            case 0x27: inSingle = true; break         // '
+            case 0x60: inTemplateString = true; break // `
+            case 0x28: paren++; break                 // (
+            case 0x29: paren--; break                 // )
+            case 0x5B: square++; break                // [
+            case 0x5D: square--; break                // ]
+            case 0x7B: curly++; break                 // {
+            case 0x7D: curly--; break                 // }
+          }
+          if (c === 0x2f) { // /
+            var j = i - 1;
+            var p = (void 0);
+            // find first non-whitespace prev char
+            for (; j >= 0; j--) {
+              p = exp.charAt(j);
+              if (p !== ' ') { break }
+            }
+            if (!p || !validDivisionCharRE.test(p)) {
+              inRegex = true;
+            }
+          }
+        }
+      }
+  
+      if (expression === undefined) {
+        expression = exp.slice(0, i).trim();
+      } else if (lastFilterIndex !== 0) {
+        pushFilter();
+      }
+  
+      function pushFilter () {
+        (filters || (filters = [])).push(exp.slice(lastFilterIndex, i).trim());
+        lastFilterIndex = i + 1;
+      }
+  
+      if (filters) {
+        for (i = 0; i < filters.length; i++) {
+          expression = wrapFilter(expression, filters[i]);
+        }
+      }
+  
+      return expression
+    }
+  
+    function wrapFilter (exp, filter) {
+      var i = filter.indexOf('(');
+      if (i < 0) {
+        // _f: resolveFilter
+        return ("_f(\"" + filter + "\")(" + exp + ")")
+      } else {
+        var name = filter.slice(0, i);
+        var args = filter.slice(i + 1);
+        return ("_f(\"" + name + "\")(" + exp + (args !== ')' ? ',' + args : args))
+      }
+    }
+  
+    /*  */
+  
+  
+  
+    /* eslint-disable no-unused-vars */
+    function baseWarn (msg, range) {
+      console.error(("[Vue compiler]: " + msg));
+    }
+    /* eslint-enable no-unused-vars */
+  
+    function pluckModuleFunction (
+      modules,
+      key
+    ) {
+      return modules
+        ? modules.map(function (m) { return m[key]; }).filter(function (_) { return _; })
+        : []
+    }
+  
+    function addProp (el, name, value, range, dynamic) {
+      (el.props || (el.props = [])).push(rangeSetItem({ name: name, value: value, dynamic: dynamic }, range));
+      el.plain = false;
+    }
+  
+    function addAttr (el, name, value, range, dynamic) {
+      var attrs = dynamic
+        ? (el.dynamicAttrs || (el.dynamicAttrs = []))
+        : (el.attrs || (el.attrs = []));
+      attrs.push(rangeSetItem({ name: name, value: value, dynamic: dynamic }, range));
+      el.plain = false;
+    }
+  
+    // add a raw attr (use this in preTransforms)
+    function addRawAttr (el, name, value, range) {
+      el.attrsMap[name] = value;
+      el.attrsList.push(rangeSetItem({ name: name, value: value }, range));
+    }
+  
+    function addDirective (
+      el,
+      name,
+      rawName,
+      value,
+      arg,
+      isDynamicArg,
+      modifiers,
+      range
+    ) {
+      (el.directives || (el.directives = [])).push(rangeSetItem({
+        name: name,
+        rawName: rawName,
+        value: value,
+        arg: arg,
+        isDynamicArg: isDynamicArg,
+        modifiers: modifiers
+      }, range));
+      el.plain = false;
+    }
+  
+    function prependModifierMarker (symbol, name, dynamic) {
+      return dynamic
+        ? ("_p(" + name + ",\"" + symbol + "\")")
+        : symbol + name // mark the event as captured
+    }
+  
+    function addHandler (
+      el,
+      name,
+      value,
+      modifiers,
+      important,
+      warn,
+      range,
+      dynamic
+    ) {
+      modifiers = modifiers || emptyObject;
+      // warn prevent and passive modifier
+      /* istanbul ignore if */
+      if (
+        warn &&
+        modifiers.prevent && modifiers.passive
+      ) {
+        warn(
+          'passive and prevent can\'t be used together. ' +
+          'Passive handler can\'t prevent default event.',
+          range
+        );
+      }
+  
+      // normalize click.right and click.middle since they don't actually fire
+      // this is technically browser-specific, but at least for now browsers are
+      // the only target envs that have right/middle clicks.
+      if (modifiers.right) {
+        if (dynamic) {
+          name = "(" + name + ")==='click'?'contextmenu':(" + name + ")";
+        } else if (name === 'click') {
+          name = 'contextmenu';
+          delete modifiers.right;
+        }
+      } else if (modifiers.middle) {
+        if (dynamic) {
+          name = "(" + name + ")==='click'?'mouseup':(" + name + ")";
+        } else if (name === 'click') {
+          name = 'mouseup';
+        }
+      }
+  
+      // check capture modifier
+      if (modifiers.capture) {
+        delete modifiers.capture;
+        name = prependModifierMarker('!', name, dynamic);
+      }
+      if (modifiers.once) {
+        delete modifiers.once;
+        name = prependModifierMarker('~', name, dynamic);
+      }
+      /* istanbul ignore if */
+      if (modifiers.passive) {
+        delete modifiers.passive;
+        name = prependModifierMarker('&', name, dynamic);
+      }
+  
+      var events;
+      if (modifiers.native) {
+        delete modifiers.native;
+        events = el.nativeEvents || (el.nativeEvents = {});
+      } else {
+        events = el.events || (el.events = {});
+      }
+  
+      var newHandler = rangeSetItem({ value: value.trim(), dynamic: dynamic }, range);
+      if (modifiers !== emptyObject) {
+        newHandler.modifiers = modifiers;
+      }
+  
+      var handlers = events[name];
+      /* istanbul ignore if */
+      if (Array.isArray(handlers)) {
+        important ? handlers.unshift(newHandler) : handlers.push(newHandler);
+      } else if (handlers) {
+        events[name] = important ? [newHandler, handlers] : [handlers, newHandler];
+      } else {
+        events[name] = newHandler;
+      }
+  
+      el.plain = false;
+    }
+  
+    function getRawBindingAttr (
+      el,
+      name
+    ) {
+      return el.rawAttrsMap[':' + name] ||
+        el.rawAttrsMap['v-bind:' + name] ||
+        el.rawAttrsMap[name]
+    }
+  
+    function getBindingAttr (
+      el,
+      name,
+      getStatic
+    ) {
+      var dynamicValue =
+        getAndRemoveAttr(el, ':' + name) ||
+        getAndRemoveAttr(el, 'v-bind:' + name);
+      if (dynamicValue != null) {
+        return parseFilters(dynamicValue)
+      } else if (getStatic !== false) {
+        var staticValue = getAndRemoveAttr(el, name);
+        if (staticValue != null) {
+          return JSON.stringify(staticValue)
+        }
+      }
+    }
+  
+    // note: this only removes the attr from the Array (attrsList) so that it
+    // doesn't get processed by processAttrs.
+    // By default it does NOT remove it from the map (attrsMap) because the map is
+    // needed during codegen.
+    function getAndRemoveAttr (
+      el,
+      name,
+      removeFromMap
+    ) {
+      var val;
+      if ((val = el.attrsMap[name]) != null) {
+        var list = el.attrsList;
+        for (var i = 0, l = list.length; i < l; i++) {
+          if (list[i].name === name) {
+            list.splice(i, 1);
+            break
+          }
+        }
+      }
+      if (removeFromMap) {
+        delete el.attrsMap[name];
+      }
+      return val
+    }
+  
+    function getAndRemoveAttrByRegex (
+      el,
+      name
+    ) {
+      var list = el.attrsList;
+      for (var i = 0, l = list.length; i < l; i++) {
+        var attr = list[i];
+        if (name.test(attr.name)) {
+          list.splice(i, 1);
+          return attr
+        }
+      }
+    }
+  
+    function rangeSetItem (
+      item,
+      range
+    ) {
+      if (range) {
+        if (range.start != null) {
+          item.start = range.start;
+        }
+        if (range.end != null) {
+          item.end = range.end;
+        }
+      }
+      return item
+    }
+  
+    /*  */
+  
+    /**
+     * Cross-platform code generation for component v-model
+     */
+    function genComponentModel (
+      el,
+      value,
+      modifiers
+    ) {
+      var ref = modifiers || {};
+      var number = ref.number;
+      var trim = ref.trim;
+  
+      var baseValueExpression = '$$v';
+      var valueExpression = baseValueExpression;
+      if (trim) {
+        valueExpression =
+          "(typeof " + baseValueExpression + " === 'string'" +
+          "? " + baseValueExpression + ".trim()" +
+          ": " + baseValueExpression + ")";
+      }
+      if (number) {
+        valueExpression = "_n(" + valueExpression + ")";
+      }
+      var assignment = genAssignmentCode(value, valueExpression);
+  
+      el.model = {
+        value: ("(" + value + ")"),
+        expression: JSON.stringify(value),
+        callback: ("function (" + baseValueExpression + ") {" + assignment + "}")
+      };
+    }
+  
+    /**
+     * Cross-platform codegen helper for generating v-model value assignment code.
+     */
+    function genAssignmentCode (
+      value,
+      assignment
+    ) {
+      var res = parseModel(value);
+      if (res.key === null) {
+        return (value + "=" + assignment)
+      } else {
+        return ("$set(" + (res.exp) + ", " + (res.key) + ", " + assignment + ")")
+      }
+    }
+  
+    /**
+     * Parse a v-model expression into a base path and a final key segment.
+     * Handles both dot-path and possible square brackets.
+     *
+     * Possible cases:
+     *
+     * - test
+     * - test[key]
+     * - test[test1[key]]
+     * - test["a"][key]
+     * - xxx.test[a[a].test1[key]]
+     * - test.xxx.a["asa"][test1[key]]
+     *
+     */
+  
+    var len, str, chr, index$1, expressionPos, expressionEndPos;
+  
+  
+  
+    function parseModel (val) {
+      // Fix https://github.com/vuejs/vue/pull/7730
+      // allow v-model="obj.val " (trailing whitespace)
+      val = val.trim();
+      len = val.length;
+  
+      if (val.indexOf('[') < 0 || val.lastIndexOf(']') < len - 1) {
+        index$1 = val.lastIndexOf('.');
+        if (index$1 > -1) {
+          return {
+            exp: val.slice(0, index$1),
+            key: '"' + val.slice(index$1 + 1) + '"'
+          }
+        } else {
+          return {
+            exp: val,
+            key: null
+          }
+        }
+      }
+  
+      str = val;
+      index$1 = expressionPos = expressionEndPos = 0;
+  
+      while (!eof()) {
+        chr = next();
+        /* istanbul ignore if */
+        if (isStringStart(chr)) {
+          parseString(chr);
+        } else if (chr === 0x5B) {
+          parseBracket(chr);
+        }
+      }
+  
+      return {
+        exp: val.slice(0, expressionPos),
+        key: val.slice(expressionPos + 1, expressionEndPos)
+      }
+    }
+  
+    function next () {
+      return str.charCodeAt(++index$1)
+    }
+  
+    function eof () {
+      return index$1 >= len
+    }
+  
+    function isStringStart (chr) {
+      return chr === 0x22 || chr === 0x27
+    }
+  
+    function parseBracket (chr) {
+      var inBracket = 1;
+      expressionPos = index$1;
+      while (!eof()) {
+        chr = next();
+        if (isStringStart(chr)) {
+          parseString(chr);
+          continue
+        }
+        if (chr === 0x5B) { inBracket++; }
+        if (chr === 0x5D) { inBracket--; }
+        if (inBracket === 0) {
+          expressionEndPos = index$1;
+          break
+        }
+      }
+    }
+  
+    function parseString (chr) {
+      var stringQuote = chr;
+      while (!eof()) {
+        chr = next();
+        if (chr === stringQuote) {
+          break
+        }
+      }
+    }
+  
+    /*  */
+  
+    var warn$1;
+  
+    // in some cases, the event used has to be determined at runtime
+    // so we used some reserved tokens during compile.
+    var RANGE_TOKEN = '__r';
+    var CHECKBOX_RADIO_TOKEN = '__c';
+  
+    function model (
+      el,
+      dir,
+      _warn
+    ) {
+      warn$1 = _warn;
+      var value = dir.value;
+      var modifiers = dir.modifiers;
+      var tag = el.tag;
+      var type = el.attrsMap.type;
+  
+      {
+        // inputs with type="file" are read only and setting the input's
+        // value will throw an error.
+        if (tag === 'input' && type === 'file') {
+          warn$1(
+            "<" + (el.tag) + " v-model=\"" + value + "\" type=\"file\">:\n" +
+            "File inputs are read only. Use a v-on:change listener instead.",
+            el.rawAttrsMap['v-model']
+          );
+        }
+      }
+  
+      if (el.component) {
+        genComponentModel(el, value, modifiers);
+        // component v-model doesn't need extra runtime
+        return false
+      } else if (tag === 'select') {
+        genSelect(el, value, modifiers);
+      } else if (tag === 'input' && type === 'checkbox') {
+        genCheckboxModel(el, value, modifiers);
+      } else if (tag === 'input' && type === 'radio') {
+        genRadioModel(el, value, modifiers);
+      } else if (tag === 'input' || tag === 'textarea') {
+        genDefaultModel(el, value, modifiers);
+      } else if (!config.isReservedTag(tag)) {
+        genComponentModel(el, value, modifiers);
+        // component v-model doesn't need extra runtime
+        return false
+      } else {
+        warn$1(
+          "<" + (el.tag) + " v-model=\"" + value + "\">: " +
+          "v-model is not supported on this element type. " +
+          'If you are working with contenteditable, it\'s recommended to ' +
+          'wrap a library dedicated for that purpose inside a custom component.',
+          el.rawAttrsMap['v-model']
+        );
+      }
+  
+      // ensure runtime directive metadata
+      return true
+    }
+  
+    function genCheckboxModel (
+      el,
+      value,
+      modifiers
+    ) {
+      var number = modifiers && modifiers.number;
+      var valueBinding = getBindingAttr(el, 'value') || 'null';
+      var trueValueBinding = getBindingAttr(el, 'true-value') || 'true';
+      var falseValueBinding = getBindingAttr(el, 'false-value') || 'false';
+      addProp(el, 'checked',
+        "Array.isArray(" + value + ")" +
+        "?_i(" + value + "," + valueBinding + ")>-1" + (
+          trueValueBinding === 'true'
+            ? (":(" + value + ")")
+            : (":_q(" + value + "," + trueValueBinding + ")")
+        )
+      );
+      addHandler(el, 'change',
+        "var $$a=" + value + "," +
+            '$$el=$event.target,' +
+            "$$c=$$el.checked?(" + trueValueBinding + "):(" + falseValueBinding + ");" +
+        'if(Array.isArray($$a)){' +
+          "var $$v=" + (number ? '_n(' + valueBinding + ')' : valueBinding) + "," +
+              '$$i=_i($$a,$$v);' +
+          "if($$el.checked){$$i<0&&(" + (genAssignmentCode(value, '$$a.concat([$$v])')) + ")}" +
+          "else{$$i>-1&&(" + (genAssignmentCode(value, '$$a.slice(0,$$i).concat($$a.slice($$i+1))')) + ")}" +
+        "}else{" + (genAssignmentCode(value, '$$c')) + "}",
+        null, true
+      );
+    }
+  
+    function genRadioModel (
+      el,
+      value,
+      modifiers
+    ) {
+      var number = modifiers && modifiers.number;
+      var valueBinding = getBindingAttr(el, 'value') || 'null';
+      valueBinding = number ? ("_n(" + valueBinding + ")") : valueBinding;
+      addProp(el, 'checked', ("_q(" + value + "," + valueBinding + ")"));
+      addHandler(el, 'change', genAssignmentCode(value, valueBinding), null, true);
+    }
+  
+    function genSelect (
+      el,
+      value,
+      modifiers
+    ) {
+      var number = modifiers && modifiers.number;
+      var selectedVal = "Array.prototype.filter" +
+        ".call($event.target.options,function(o){return o.selected})" +
+        ".map(function(o){var val = \"_value\" in o ? o._value : o.value;" +
+        "return " + (number ? '_n(val)' : 'val') + "})";
+  
+      var assignment = '$event.target.multiple ? $$selectedVal : $$selectedVal[0]';
+      var code = "var $$selectedVal = " + selectedVal + ";";
+      code = code + " " + (genAssignmentCode(value, assignment));
+      addHandler(el, 'change', code, null, true);
+    }
+  
+    function genDefaultModel (
+      el,
+      value,
+      modifiers
+    ) {
+      var type = el.attrsMap.type;
+  
+      // warn if v-bind:value conflicts with v-model
+      // except for inputs with v-bind:type
+      {
+        var value$1 = el.attrsMap['v-bind:value'] || el.attrsMap[':value'];
+        var typeBinding = el.attrsMap['v-bind:type'] || el.attrsMap[':type'];
+        if (value$1 && !typeBinding) {
+          var binding = el.attrsMap['v-bind:value'] ? 'v-bind:value' : ':value';
+          warn$1(
+            binding + "=\"" + value$1 + "\" conflicts with v-model on the same element " +
+            'because the latter already expands to a value binding internally',
+            el.rawAttrsMap[binding]
+          );
+        }
+      }
+  
+      var ref = modifiers || {};
+      var lazy = ref.lazy;
+      var number = ref.number;
+      var trim = ref.trim;
+      var needCompositionGuard = !lazy && type !== 'range';
+      var event = lazy
+        ? 'change'
+        : type === 'range'
+          ? RANGE_TOKEN
+          : 'input';
+  
+      var valueExpression = '$event.target.value';
+      if (trim) {
+        valueExpression = "$event.target.value.trim()";
+      }
+      if (number) {
+        valueExpression = "_n(" + valueExpression + ")";
+      }
+  
+      var code = genAssignmentCode(value, valueExpression);
+      if (needCompositionGuard) {
+        code = "if($event.target.composing)return;" + code;
+      }
+  
+      addProp(el, 'value', ("(" + value + ")"));
+      addHandler(el, event, code, null, true);
+      if (trim || number) {
+        addHandler(el, 'blur', '$forceUpdate()');
+      }
+    }
+  
+    /*  */
+  
+    // normalize v-model event tokens that can only be determined at runtime.
+    // it's important to place the event as the first in the array because
+    // the whole point is ensuring the v-model callback gets called before
+    // user-attached handlers.
+    function normalizeEvents (on) {
+      /* istanbul ignore if */
+      if (isDef(on[RANGE_TOKEN])) {
+        // IE input[type=range] only supports `change` event
+        var event = isIE ? 'change' : 'input';
+        on[event] = [].concat(on[RANGE_TOKEN], on[event] || []);
+        delete on[RANGE_TOKEN];
+      }
+      // This was originally intended to fix #4521 but no longer necessary
+      // after 2.5. Keeping it for backwards compat with generated code from < 2.4
+      /* istanbul ignore if */
+      if (isDef(on[CHECKBOX_RADIO_TOKEN])) {
+        on.change = [].concat(on[CHECKBOX_RADIO_TOKEN], on.change || []);
+        delete on[CHECKBOX_RADIO_TOKEN];
+      }
+    }
+  
+    var target$1;
+  
+    function createOnceHandler$1 (event, handler, capture) {
+      var _target = target$1; // save current target element in closure
+      return function onceHandler () {
+        var res = handler.apply(null, arguments);
+        if (res !== null) {
+          remove$2(event, onceHandler, capture, _target);
+        }
+      }
+    }
+  
+    // #9446: Firefox <= 53 (in particular, ESR 52) has incorrect Event.timeStamp
+    // implementation and does not fire microtasks in between event propagation, so
+    // safe to exclude.
+    var useMicrotaskFix = isUsingMicroTask && !(isFF && Number(isFF[1]) <= 53);
+  
+    function add$1 (
+      name,
+      handler,
+      capture,
+      passive
+    ) {
+      // async edge case #6566: inner click event triggers patch, event handler
+      // attached to outer element during patch, and triggered again. This
+      // happens because browsers fire microtask ticks between event propagation.
+      // the solution is simple: we save the timestamp when a handler is attached,
+      // and the handler would only fire if the event passed to it was fired
+      // AFTER it was attached.
+      if (useMicrotaskFix) {
+        var attachedTimestamp = currentFlushTimestamp;
+        var original = handler;
+        handler = original._wrapper = function (e) {
+          if (
+            // no bubbling, should always fire.
+            // this is just a safety net in case event.timeStamp is unreliable in
+            // certain weird environments...
+            e.target === e.currentTarget ||
+            // event is fired after handler attachment
+            e.timeStamp >= attachedTimestamp ||
+            // bail for environments that have buggy event.timeStamp implementations
+            // #9462 iOS 9 bug: event.timeStamp is 0 after history.pushState
+            // #9681 QtWebEngine event.timeStamp is negative value
+            e.timeStamp <= 0 ||
+            // #9448 bail if event is fired in another document in a multi-page
+            // electron/nw.js app, since event.timeStamp will be using a different
+            // starting reference
+            e.target.ownerDocument !== document
+          ) {
+            return original.apply(this, arguments)
+          }
+        };
+      }
+      target$1.addEventListener(
+        name,
+        handler,
+        supportsPassive
+          ? { capture: capture, passive: passive }
+          : capture
+      );
+    }
+  
+    function remove$2 (
+      name,
+      handler,
+      capture,
+      _target
+    ) {
+      (_target || target$1).removeEventListener(
+        name,
+        handler._wrapper || handler,
+        capture
+      );
+    }
+  
+    function updateDOMListeners (oldVnode, vnode) {
+      if (isUndef(oldVnode.data.on) && isUndef(vnode.data.on)) {
+        return
+      }
+      var on = vnode.data.on || {};
+      var oldOn = oldVnode.data.on || {};
+      target$1 = vnode.elm;
+      normalizeEvents(on);
+      updateListeners(on, oldOn, add$1, remove$2, createOnceHandler$1, vnode.context);
+      target$1 = undefined;
+    }
+  
+    var events = {
+      create: updateDOMListeners,
+      update: updateDOMListeners
+    };
+  
+    /*  */
+  
+    var svgContainer;
+  
+    function updateDOMProps (oldVnode, vnode) {
+      if (isUndef(oldVnode.data.domProps) && isUndef(vnode.data.domProps)) {
+        return
+      }
+      var key, cur;
+      var elm = vnode.elm;
+      var oldProps = oldVnode.data.domProps || {};
+      var props = vnode.data.domProps || {};
+      // clone observed objects, as the user probably wants to mutate it
+      if (isDef(props.__ob__)) {
+        props = vnode.data.domProps = extend({}, props);
+      }
+  
+      for (key in oldProps) {
+        if (!(key in props)) {
+          elm[key] = '';
+        }
+      }
+  
+      for (key in props) {
+        cur = props[key];
+        // ignore children if the node has textContent or innerHTML,
+        // as these will throw away existing DOM nodes and cause removal errors
+        // on subsequent patches (#3360)
+        if (key === 'textContent' || key === 'innerHTML') {
+          if (vnode.children) { vnode.children.length = 0; }
+          if (cur === oldProps[key]) { continue }
+          // #6601 work around Chrome version <= 55 bug where single textNode
+          // replaced by innerHTML/textContent retains its parentNode property
+          if (elm.childNodes.length === 1) {
+            elm.removeChild(elm.childNodes[0]);
+          }
+        }
+  
+        if (key === 'value' && elm.tagName !== 'PROGRESS') {
+          // store value as _value as well since
+          // non-string values will be stringified
+          elm._value = cur;
+          // avoid resetting cursor position when value is the same
+          var strCur = isUndef(cur) ? '' : String(cur);
+          if (shouldUpdateValue(elm, strCur)) {
+            elm.value = strCur;
+          }
+        } else if (key === 'innerHTML' && isSVG(elm.tagName) && isUndef(elm.innerHTML)) {
+          // IE doesn't support innerHTML for SVG elements
+          svgContainer = svgContainer || document.createElement('div');
+          svgContainer.innerHTML = "<svg>" + cur + "</svg>";
+          var svg = svgContainer.firstChild;
+          while (elm.firstChild) {
+            elm.removeChild(elm.firstChild);
+          }
+          while (svg.firstChild) {
+            elm.appendChild(svg.firstChild);
+          }
+        } else if (
+          // skip the update if old and new VDOM state is the same.
+          // `value` is handled separately because the DOM value may be temporarily
+          // out of sync with VDOM state due to focus, composition and modifiers.
+          // This  #4521 by skipping the unnecesarry `checked` update.
+          cur !== oldProps[key]
+        ) {
+          // some property updates can throw
+          // e.g. `value` on <progress> w/ non-finite value
+          try {
+            elm[key] = cur;
+          } catch (e) {}
+        }
+      }
+    }
+  
+    // check platforms/web/util/attrs.js acceptValue
+  
+  
+    function shouldUpdateValue (elm, checkVal) {
+      return (!elm.composing && (
+        elm.tagName === 'OPTION' ||
+        isNotInFocusAndDirty(elm, checkVal) ||
+        isDirtyWithModifiers(elm, checkVal)
+      ))
+    }
+  
+    function isNotInFocusAndDirty (elm, checkVal) {
+      // return true when textbox (.number and .trim) loses focus and its value is
+      // not equal to the updated value
+      var notInFocus = true;
+      // #6157
+      // work around IE bug when accessing document.activeElement in an iframe
+      try { notInFocus = document.activeElement !== elm; } catch (e) {}
+      return notInFocus && elm.value !== checkVal
+    }
+  
+    function isDirtyWithModifiers (elm, newVal) {
+      var value = elm.value;
+      var modifiers = elm._vModifiers; // injected by v-model runtime
+      if (isDef(modifiers)) {
+        if (modifiers.number) {
+          return toNumber(value) !== toNumber(newVal)
+        }
+        if (modifiers.trim) {
+          return value.trim() !== newVal.trim()
+        }
+      }
+      return value !== newVal
+    }
+  
+    var domProps = {
+      create: updateDOMProps,
+      update: updateDOMProps
+    };
+  
+    /*  */
+  
+    var parseStyleText = cached(function (cssText) {
+      var res = {};
+      var listDelimiter = /;(?![^(]*\))/g;
+      var propertyDelimiter = /:(.+)/;
+      cssText.split(listDelimiter).forEach(function (item) {
+        if (item) {
+          var tmp = item.split(propertyDelimiter);
+          tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim());
+        }
+      });
+      return res
+    });
+  
+    // merge static and dynamic style data on the same vnode
+    function normalizeStyleData (data) {
+      var style = normalizeStyleBinding(data.style);
+      // static style is pre-processed into an object during compilation
+      // and is always a fresh object, so it's safe to merge into it
+      return data.staticStyle
+        ? extend(data.staticStyle, style)
+        : style
+    }
+  
+    // normalize possible array / string values into Object
+    function normalizeStyleBinding (bindingStyle) {
+      if (Array.isArray(bindingStyle)) {
+        return toObject(bindingStyle)
+      }
+      if (typeof bindingStyle === 'string') {
+        return parseStyleText(bindingStyle)
+      }
+      return bindingStyle
+    }
+  
+    /**
+     * parent component style should be after child's
+     * so that parent component's style could override it
+     */
+    function getStyle (vnode, checkChild) {
+      var res = {};
+      var styleData;
+  
+      if (checkChild) {
+        var childNode = vnode;
+        while (childNode.componentInstance) {
+          childNode = childNode.componentInstance._vnode;
+          if (
+            childNode && childNode.data &&
+            (styleData = normalizeStyleData(childNode.data))
+          ) {
+            extend(res, styleData);
+          }
+        }
+      }
+  
+      if ((styleData = normalizeStyleData(vnode.data))) {
+        extend(res, styleData);
+      }
+  
+      var parentNode = vnode;
+      while ((parentNode = parentNode.parent)) {
+        if (parentNode.data && (styleData = normalizeStyleData(parentNode.data))) {
+          extend(res, styleData);
+        }
+      }
+      return res
+    }
+  
+    /*  */
+  
+    var cssVarRE = /^--/;
+    var importantRE = /\s*!important$/;
+    var setProp = function (el, name, val) {
+      /* istanbul ignore if */
+      if (cssVarRE.test(name)) {
+        el.style.setProperty(name, val);
+      } else if (importantRE.test(val)) {
+        el.style.setProperty(hyphenate(name), val.replace(importantRE, ''), 'important');
+      } else {
+        var normalizedName = normalize(name);
+        if (Array.isArray(val)) {
+          // Support values array created by autoprefixer, e.g.
+          // {display: ["-webkit-box", "-ms-flexbox", "flex"]}
+          // Set them one by one, and the browser will only set those it can recognize
+          for (var i = 0, len = val.length; i < len; i++) {
+            el.style[normalizedName] = val[i];
+          }
+        } else {
+          el.style[normalizedName] = val;
+        }
+      }
+    };
+  
+    var vendorNames = ['Webkit', 'Moz', 'ms'];
+  
+    var emptyStyle;
+    var normalize = cached(function (prop) {
+      emptyStyle = emptyStyle || document.createElement('div').style;
+      prop = camelize(prop);
+      if (prop !== 'filter' && (prop in emptyStyle)) {
+        return prop
+      }
+      var capName = prop.charAt(0).toUpperCase() + prop.slice(1);
+      for (var i = 0; i < vendorNames.length; i++) {
+        var name = vendorNames[i] + capName;
+        if (name in emptyStyle) {
+          return name
+        }
+      }
+    });
+  
+    function updateStyle (oldVnode, vnode) {
+      var data = vnode.data;
+      var oldData = oldVnode.data;
+  
+      if (isUndef(data.staticStyle) && isUndef(data.style) &&
+        isUndef(oldData.staticStyle) && isUndef(oldData.style)
+      ) {
+        return
+      }
+  
+      var cur, name;
+      var el = vnode.elm;
+      var oldStaticStyle = oldData.staticStyle;
+      var oldStyleBinding = oldData.normalizedStyle || oldData.style || {};
+  
+      // if static style exists, stylebinding already merged into it when doing normalizeStyleData
+      var oldStyle = oldStaticStyle || oldStyleBinding;
+  
+      var style = normalizeStyleBinding(vnode.data.style) || {};
+  
+      // store normalized style under a different key for next diff
+      // make sure to clone it if it's reactive, since the user likely wants
+      // to mutate it.
+      vnode.data.normalizedStyle = isDef(style.__ob__)
+        ? extend({}, style)
+        : style;
+  
+      var newStyle = getStyle(vnode, true);
+  
+      for (name in oldStyle) {
+        if (isUndef(newStyle[name])) {
+          setProp(el, name, '');
+        }
+      }
+      for (name in newStyle) {
+        cur = newStyle[name];
+        if (cur !== oldStyle[name]) {
+          // ie9 setting to null has no effect, must use empty string
+          setProp(el, name, cur == null ? '' : cur);
+        }
+      }
+    }
+  
+    var style = {
+      create: updateStyle,
+      update: updateStyle
+    };
+  
+    /*  */
+  
+    var whitespaceRE = /\s+/;
+  
+    /**
+     * Add class with compatibility for SVG since classList is not supported on
+     * SVG elements in IE
+     */
+    function addClass (el, cls) {
+      /* istanbul ignore if */
+      if (!cls || !(cls = cls.trim())) {
+        return
+      }
+  
+      /* istanbul ignore else */
+      if (el.classList) {
+        if (cls.indexOf(' ') > -1) {
+          cls.split(whitespaceRE).forEach(function (c) { return el.classList.add(c); });
+        } else {
+          el.classList.add(cls);
+        }
+      } else {
+        var cur = " " + (el.getAttribute('class') || '') + " ";
+        if (cur.indexOf(' ' + cls + ' ') < 0) {
+          el.setAttribute('class', (cur + cls).trim());
+        }
+      }
+    }
+  
+    /**
+     * Remove class with compatibility for SVG since classList is not supported on
+     * SVG elements in IE
+     */
+    function removeClass (el, cls) {
+      /* istanbul ignore if */
+      if (!cls || !(cls = cls.trim())) {
+        return
+      }
+  
+      /* istanbul ignore else */
+      if (el.classList) {
+        if (cls.indexOf(' ') > -1) {
+          cls.split(whitespaceRE).forEach(function (c) { return el.classList.remove(c); });
+        } else {
+          el.classList.remove(cls);
+        }
+        if (!el.classList.length) {
+          el.removeAttribute('class');
+        }
+      } else {
+        var cur = " " + (el.getAttribute('class') || '') + " ";
+        var tar = ' ' + cls + ' ';
+        while (cur.indexOf(tar) >= 0) {
+          cur = cur.replace(tar, ' ');
+        }
+        cur = cur.trim();
+        if (cur) {
+          el.setAttribute('class', cur);
+        } else {
+          el.removeAttribute('class');
+        }
+      }
+    }
+  
+    /*  */
+  
+    function resolveTransition (def$$1) {
+      if (!def$$1) {
+        return
+      }
+      /* istanbul ignore else */
+      if (typeof def$$1 === 'object') {
+        var res = {};
+        if (def$$1.css !== false) {
+          extend(res, autoCssTransition(def$$1.name || 'v'));
+        }
+        extend(res, def$$1);
+        return res
+      } else if (typeof def$$1 === 'string') {
+        return autoCssTransition(def$$1)
+      }
+    }
+  
+    var autoCssTransition = cached(function (name) {
+      return {
+        enterClass: (name + "-enter"),
+        enterToClass: (name + "-enter-to"),
+        enterActiveClass: (name + "-enter-active"),
+        leaveClass: (name + "-leave"),
+        leaveToClass: (name + "-leave-to"),
+        leaveActiveClass: (name + "-leave-active")
+      }
+    });
+  
+    var hasTransition = inBrowser && !isIE9;
+    var TRANSITION = 'transition';
+    var ANIMATION = 'animation';
+  
+    // Transition property/event sniffing
+    var transitionProp = 'transition';
+    var transitionEndEvent = 'transitionend';
+    var animationProp = 'animation';
+    var animationEndEvent = 'animationend';
+    if (hasTransition) {
+      /* istanbul ignore if */
+      if (window.ontransitionend === undefined &&
+        window.onwebkittransitionend !== undefined
+      ) {
+        transitionProp = 'WebkitTransition';
+        transitionEndEvent = 'webkitTransitionEnd';
+      }
+      if (window.onanimationend === undefined &&
+        window.onwebkitanimationend !== undefined
+      ) {
+        animationProp = 'WebkitAnimation';
+        animationEndEvent = 'webkitAnimationEnd';
+      }
+    }
+  
+    // binding to window is necessary to make hot reload work in IE in strict mode
+    var raf = inBrowser
+      ? window.requestAnimationFrame
+        ? window.requestAnimationFrame.bind(window)
+        : setTimeout
+      : /* istanbul ignore next */ function (fn) { return fn(); };
+  
+    function nextFrame (fn) {
+      raf(function () {
+        raf(fn);
+      });
+    }
+  
+    function addTransitionClass (el, cls) {
+      var transitionClasses = el._transitionClasses || (el._transitionClasses = []);
+      if (transitionClasses.indexOf(cls) < 0) {
+        transitionClasses.push(cls);
+        addClass(el, cls);
+      }
+    }
+  
+    function removeTransitionClass (el, cls) {
+      if (el._transitionClasses) {
+        remove(el._transitionClasses, cls);
+      }
+      removeClass(el, cls);
+    }
+  
+    function whenTransitionEnds (
+      el,
+      expectedType,
+      cb
+    ) {
+      var ref = getTransitionInfo(el, expectedType);
+      var type = ref.type;
+      var timeout = ref.timeout;
+      var propCount = ref.propCount;
+      if (!type) { return cb() }
+      var event = type === TRANSITION ? transitionEndEvent : animationEndEvent;
+      var ended = 0;
+      var end = function () {
+        el.removeEventListener(event, onEnd);
+        cb();
+      };
+      var onEnd = function (e) {
+        if (e.target === el) {
+          if (++ended >= propCount) {
+            end();
+          }
+        }
+      };
+      setTimeout(function () {
+        if (ended < propCount) {
+          end();
+        }
+      }, timeout + 1);
+      el.addEventListener(event, onEnd);
+    }
+  
+    var transformRE = /\b(transform|all)(,|$)/;
+  
+    function getTransitionInfo (el, expectedType) {
+      var styles = window.getComputedStyle(el);
+      // JSDOM may return undefined for transition properties
+      var transitionDelays = (styles[transitionProp + 'Delay'] || '').split(', ');
+      var transitionDurations = (styles[transitionProp + 'Duration'] || '').split(', ');
+      var transitionTimeout = getTimeout(transitionDelays, transitionDurations);
+      var animationDelays = (styles[animationProp + 'Delay'] || '').split(', ');
+      var animationDurations = (styles[animationProp + 'Duration'] || '').split(', ');
+      var animationTimeout = getTimeout(animationDelays, animationDurations);
+  
+      var type;
+      var timeout = 0;
+      var propCount = 0;
+      /* istanbul ignore if */
+      if (expectedType === TRANSITION) {
+        if (transitionTimeout > 0) {
+          type = TRANSITION;
+          timeout = transitionTimeout;
+          propCount = transitionDurations.length;
+        }
+      } else if (expectedType === ANIMATION) {
+        if (animationTimeout > 0) {
+          type = ANIMATION;
+          timeout = animationTimeout;
+          propCount = animationDurations.length;
+        }
+      } else {
+        timeout = Math.max(transitionTimeout, animationTimeout);
+        type = timeout > 0
+          ? transitionTimeout > animationTimeout
+            ? TRANSITION
+            : ANIMATION
+          : null;
+        propCount = type
+          ? type === TRANSITION
+            ? transitionDurations.length
+            : animationDurations.length
+          : 0;
+      }
+      var hasTransform =
+        type === TRANSITION &&
+        transformRE.test(styles[transitionProp + 'Property']);
+      return {
+        type: type,
+        timeout: timeout,
+        propCount: propCount,
+        hasTransform: hasTransform
+      }
+    }
+  
+    function getTimeout (delays, durations) {
+      /* istanbul ignore next */
+      while (delays.length < durations.length) {
+        delays = delays.concat(delays);
+      }
+  
+      return Math.max.apply(null, durations.map(function (d, i) {
+        return toMs(d) + toMs(delays[i])
+      }))
+    }
+  
+    // Old versions of Chromium (below 61.0.3163.100) formats floating pointer numbers
+    // in a locale-dependent way, using a comma instead of a dot.
+    // If comma is not replaced with a dot, the input will be rounded down (i.e. acting
+    // as a floor function) causing unexpected behaviors
+    function toMs (s) {
+      return Number(s.slice(0, -1).replace(',', '.')) * 1000
+    }
+  
+    /*  */
+  
+    function enter (vnode, toggleDisplay) {
+      var el = vnode.elm;
+  
+      // call leave callback now
+      if (isDef(el._leaveCb)) {
+        el._leaveCb.cancelled = true;
+        el._leaveCb();
+      }
+  
+      var data = resolveTransition(vnode.data.transition);
+      if (isUndef(data)) {
+        return
+      }
+  
+      /* istanbul ignore if */
+      if (isDef(el._enterCb) || el.nodeType !== 1) {
+        return
+      }
+  
+      var css = data.css;
+      var type = data.type;
+      var enterClass = data.enterClass;
+      var enterToClass = data.enterToClass;
+      var enterActiveClass = data.enterActiveClass;
+      var appearClass = data.appearClass;
+      var appearToClass = data.appearToClass;
+      var appearActiveClass = data.appearActiveClass;
+      var beforeEnter = data.beforeEnter;
+      var enter = data.enter;
+      var afterEnter = data.afterEnter;
+      var enterCancelled = data.enterCancelled;
+      var beforeAppear = data.beforeAppear;
+      var appear = data.appear;
+      var afterAppear = data.afterAppear;
+      var appearCancelled = data.appearCancelled;
+      var duration = data.duration;
+  
+      // activeInstance will always be the <transition> component managing this
+      // transition. One edge case to check is when the <transition> is placed
+      // as the root node of a child component. In that case we need to check
+      // <transition>'s parent for appear check.
+      var context = activeInstance;
+      var transitionNode = activeInstance.$vnode;
+      while (transitionNode && transitionNode.parent) {
+        context = transitionNode.context;
+        transitionNode = transitionNode.parent;
+      }
+  
+      var isAppear = !context._isMounted || !vnode.isRootInsert;
+  
+      if (isAppear && !appear && appear !== '') {
+        return
+      }
+  
+      var startClass = isAppear && appearClass
+        ? appearClass
+        : enterClass;
+      var activeClass = isAppear && appearActiveClass
+        ? appearActiveClass
+        : enterActiveClass;
+      var toClass = isAppear && appearToClass
+        ? appearToClass
+        : enterToClass;
+  
+      var beforeEnterHook = isAppear
+        ? (beforeAppear || beforeEnter)
+        : beforeEnter;
+      var enterHook = isAppear
+        ? (typeof appear === 'function' ? appear : enter)
+        : enter;
+      var afterEnterHook = isAppear
+        ? (afterAppear || afterEnter)
+        : afterEnter;
+      var enterCancelledHook = isAppear
+        ? (appearCancelled || enterCancelled)
+        : enterCancelled;
+  
+      var explicitEnterDuration = toNumber(
+        isObject(duration)
+          ? duration.enter
+          : duration
+      );
+  
+      if (explicitEnterDuration != null) {
+        checkDuration(explicitEnterDuration, 'enter', vnode);
+      }
+  
+      var expectsCSS = css !== false && !isIE9;
+      var userWantsControl = getHookArgumentsLength(enterHook);
+  
+      var cb = el._enterCb = once(function () {
+        if (expectsCSS) {
+          removeTransitionClass(el, toClass);
+          removeTransitionClass(el, activeClass);
+        }
+        if (cb.cancelled) {
+          if (expectsCSS) {
+            removeTransitionClass(el, startClass);
+          }
+          enterCancelledHook && enterCancelledHook(el);
+        } else {
+          afterEnterHook && afterEnterHook(el);
+        }
+        el._enterCb = null;
+      });
+  
+      if (!vnode.data.show) {
+        // remove pending leave element on enter by injecting an insert hook
+        mergeVNodeHook(vnode, 'insert', function () {
+          var parent = el.parentNode;
+          var pendingNode = parent && parent._pending && parent._pending[vnode.key];
+          if (pendingNode &&
+            pendingNode.tag === vnode.tag &&
+            pendingNode.elm._leaveCb
+          ) {
+            pendingNode.elm._leaveCb();
+          }
+          enterHook && enterHook(el, cb);
+        });
+      }
+  
+      // start enter transition
+      beforeEnterHook && beforeEnterHook(el);
+      if (expectsCSS) {
+        addTransitionClass(el, startClass);
+        addTransitionClass(el, activeClass);
+        nextFrame(function () {
+          removeTransitionClass(el, startClass);
+          if (!cb.cancelled) {
+            addTransitionClass(el, toClass);
+            if (!userWantsControl) {
+              if (isValidDuration(explicitEnterDuration)) {
+                setTimeout(cb, explicitEnterDuration);
+              } else {
+                whenTransitionEnds(el, type, cb);
+              }
+            }
+          }
+        });
+      }
+  
+      if (vnode.data.show) {
+        toggleDisplay && toggleDisplay();
+        enterHook && enterHook(el, cb);
+      }
+  
+      if (!expectsCSS && !userWantsControl) {
+        cb();
+      }
+    }
+  
+    function leave (vnode, rm) {
+      var el = vnode.elm;
+  
+      // call enter callback now
+      if (isDef(el._enterCb)) {
+        el._enterCb.cancelled = true;
+        el._enterCb();
+      }
+  
+      var data = resolveTransition(vnode.data.transition);
+      if (isUndef(data) || el.nodeType !== 1) {
+        return rm()
+      }
+  
+      /* istanbul ignore if */
+      if (isDef(el._leaveCb)) {
+        return
+      }
+  
+      var css = data.css;
+      var type = data.type;
+      var leaveClass = data.leaveClass;
+      var leaveToClass = data.leaveToClass;
+      var leaveActiveClass = data.leaveActiveClass;
+      var beforeLeave = data.beforeLeave;
+      var leave = data.leave;
+      var afterLeave = data.afterLeave;
+      var leaveCancelled = data.leaveCancelled;
+      var delayLeave = data.delayLeave;
+      var duration = data.duration;
+  
+      var expectsCSS = css !== false && !isIE9;
+      var userWantsControl = getHookArgumentsLength(leave);
+  
+      var explicitLeaveDuration = toNumber(
+        isObject(duration)
+          ? duration.leave
+          : duration
+      );
+  
+      if (isDef(explicitLeaveDuration)) {
+        checkDuration(explicitLeaveDuration, 'leave', vnode);
+      }
+  
+      var cb = el._leaveCb = once(function () {
+        if (el.parentNode && el.parentNode._pending) {
+          el.parentNode._pending[vnode.key] = null;
+        }
+        if (expectsCSS) {
+          removeTransitionClass(el, leaveToClass);
+          removeTransitionClass(el, leaveActiveClass);
+        }
+        if (cb.cancelled) {
+          if (expectsCSS) {
+            removeTransitionClass(el, leaveClass);
+          }
+          leaveCancelled && leaveCancelled(el);
+        } else {
+          rm();
+          afterLeave && afterLeave(el);
+        }
+        el._leaveCb = null;
+      });
+  
+      if (delayLeave) {
+        delayLeave(performLeave);
+      } else {
+        performLeave();
+      }
+  
+      function performLeave () {
+        // the delayed leave may have already been cancelled
+        if (cb.cancelled) {
+          return
+        }
+        // record leaving element
+        if (!vnode.data.show && el.parentNode) {
+          (el.parentNode._pending || (el.parentNode._pending = {}))[(vnode.key)] = vnode;
+        }
+        beforeLeave && beforeLeave(el);
+        if (expectsCSS) {
+          addTransitionClass(el, leaveClass);
+          addTransitionClass(el, leaveActiveClass);
+          nextFrame(function () {
+            removeTransitionClass(el, leaveClass);
+            if (!cb.cancelled) {
+              addTransitionClass(el, leaveToClass);
+              if (!userWantsControl) {
+                if (isValidDuration(explicitLeaveDuration)) {
+                  setTimeout(cb, explicitLeaveDuration);
+                } else {
+                  whenTransitionEnds(el, type, cb);
+                }
+              }
+            }
+          });
+        }
+        leave && leave(el, cb);
+        if (!expectsCSS && !userWantsControl) {
+          cb();
+        }
+      }
+    }
+  
+    // only used in dev mode
+    function checkDuration (val, name, vnode) {
+      if (typeof val !== 'number') {
+        warn(
+          "<transition> explicit " + name + " duration is not a valid number - " +
+          "got " + (JSON.stringify(val)) + ".",
+          vnode.context
+        );
+      } else if (isNaN(val)) {
+        warn(
+          "<transition> explicit " + name + " duration is NaN - " +
+          'the duration expression might be incorrect.',
+          vnode.context
+        );
+      }
+    }
+  
+    function isValidDuration (val) {
+      return typeof val === 'number' && !isNaN(val)
+    }
+  
+    /**
+     * Normalize a transition hook's argument length. The hook may be:
+     * - a merged hook (invoker) with the original in .fns
+     * - a wrapped component method (check ._length)
+     * - a plain function (.length)
+     */
+    function getHookArgumentsLength (fn) {
+      if (isUndef(fn)) {
+        return false
+      }
+      var invokerFns = fn.fns;
+      if (isDef(invokerFns)) {
+        // invoker
+        return getHookArgumentsLength(
+          Array.isArray(invokerFns)
+            ? invokerFns[0]
+            : invokerFns
+        )
+      } else {
+        return (fn._length || fn.length) > 1
+      }
+    }
+  
+    function _enter (_, vnode) {
+      if (vnode.data.show !== true) {
+        enter(vnode);
+      }
+    }
+  
+    var transition = inBrowser ? {
+      create: _enter,
+      activate: _enter,
+      remove: function remove$$1 (vnode, rm) {
+        /* istanbul ignore else */
+        if (vnode.data.show !== true) {
+          leave(vnode, rm);
+        } else {
+          rm();
+        }
+      }
+    } : {};
+  
+    var platformModules = [
+      attrs,
+      klass,
+      events,
+      domProps,
+      style,
+      transition
+    ];
+  
+    /*  */
+  
+    // the directive module should be applied last, after all
+    // built-in modules have been applied.
+    var modules = platformModules.concat(baseModules);
+  
+    var patch = createPatchFunction({ nodeOps: nodeOps, modules: modules });
+  
+    /**
+     * Not type checking this file because flow doesn't like attaching
+     * properties to Elements.
+     */
+  
+    /* istanbul ignore if */
+    if (isIE9) {
+      // http://www.matts411.com/post/internet-explorer-9-oninput/
+      document.addEventListener('selectionchange', function () {
+        var el = document.activeElement;
+        if (el && el.vmodel) {
+          trigger(el, 'input');
+        }
+      });
+    }
+  
+    var directive = {
+      inserted: function inserted (el, binding, vnode, oldVnode) {
+        if (vnode.tag === 'select') {
+          // #6903
+          if (oldVnode.elm && !oldVnode.elm._vOptions) {
+            mergeVNodeHook(vnode, 'postpatch', function () {
+              directive.componentUpdated(el, binding, vnode);
+            });
+          } else {
+            setSelected(el, binding, vnode.context);
+          }
+          el._vOptions = [].map.call(el.options, getValue);
+        } else if (vnode.tag === 'textarea' || isTextInputType(el.type)) {
+          el._vModifiers = binding.modifiers;
+          if (!binding.modifiers.lazy) {
+            el.addEventListener('compositionstart', onCompositionStart);
+            el.addEventListener('compositionend', onCompositionEnd);
+            // Safari < 10.2 & UIWebView doesn't fire compositionend when
+            // switching focus before confirming composition choice
+            // this also fixes the issue where some browsers e.g. iOS Chrome
+            // fires "change" instead of "input" on autocomplete.
+            el.addEventListener('change', onCompositionEnd);
+            /* istanbul ignore if */
+            if (isIE9) {
+              el.vmodel = true;
+            }
+          }
+        }
+      },
+  
+      componentUpdated: function componentUpdated (el, binding, vnode) {
+        if (vnode.tag === 'select') {
+          setSelected(el, binding, vnode.context);
+          // in case the options rendered by v-for have changed,
+          // it's possible that the value is out-of-sync with the rendered options.
+          // detect such cases and filter out values that no longer has a matching
+          // option in the DOM.
+          var prevOptions = el._vOptions;
+          var curOptions = el._vOptions = [].map.call(el.options, getValue);
+          if (curOptions.some(function (o, i) { return !looseEqual(o, prevOptions[i]); })) {
+            // trigger change event if
+            // no matching option found for at least one value
+            var needReset = el.multiple
+              ? binding.value.some(function (v) { return hasNoMatchingOption(v, curOptions); })
+              : binding.value !== binding.oldValue && hasNoMatchingOption(binding.value, curOptions);
+            if (needReset) {
+              trigger(el, 'change');
+            }
+          }
+        }
+      }
+    };
+  
+    function setSelected (el, binding, vm) {
+      actuallySetSelected(el, binding, vm);
+      /* istanbul ignore if */
+      if (isIE || isEdge) {
+        setTimeout(function () {
+          actuallySetSelected(el, binding, vm);
+        }, 0);
+      }
+    }
+  
+    function actuallySetSelected (el, binding, vm) {
+      var value = binding.value;
+      var isMultiple = el.multiple;
+      if (isMultiple && !Array.isArray(value)) {
+        warn(
+          "<select multiple v-model=\"" + (binding.expression) + "\"> " +
+          "expects an Array value for its binding, but got " + (Object.prototype.toString.call(value).slice(8, -1)),
+          vm
+        );
+        return
+      }
+      var selected, option;
+      for (var i = 0, l = el.options.length; i < l; i++) {
+        option = el.options[i];
+        if (isMultiple) {
+          selected = looseIndexOf(value, getValue(option)) > -1;
+          if (option.selected !== selected) {
+            option.selected = selected;
+          }
+        } else {
+          if (looseEqual(getValue(option), value)) {
+            if (el.selectedIndex !== i) {
+              el.selectedIndex = i;
+            }
+            return
+          }
+        }
+      }
+      if (!isMultiple) {
+        el.selectedIndex = -1;
+      }
+    }
+  
+    function hasNoMatchingOption (value, options) {
+      return options.every(function (o) { return !looseEqual(o, value); })
+    }
+  
+    function getValue (option) {
+      return '_value' in option
+        ? option._value
+        : option.value
+    }
+  
+    function onCompositionStart (e) {
+      e.target.composing = true;
+    }
+  
+    function onCompositionEnd (e) {
+      // prevent triggering an input event for no reason
+      if (!e.target.composing) { return }
+      e.target.composing = false;
+      trigger(e.target, 'input');
+    }
+  
+    function trigger (el, type) {
+      var e = document.createEvent('HTMLEvents');
+      e.initEvent(type, true, true);
+      el.dispatchEvent(e);
+    }
+  
+    /*  */
+  
+    // recursively search for possible transition defined inside the component root
+    function locateNode (vnode) {
+      return vnode.componentInstance && (!vnode.data || !vnode.data.transition)
+        ? locateNode(vnode.componentInstance._vnode)
+        : vnode
+    }
+  
+    var show = {
+      bind: function bind (el, ref, vnode) {
+        var value = ref.value;
+  
+        vnode = locateNode(vnode);
+        var transition$$1 = vnode.data && vnode.data.transition;
+        var originalDisplay = el.__vOriginalDisplay =
+          el.style.display === 'none' ? '' : el.style.display;
+        if (value && transition$$1) {
+          vnode.data.show = true;
+          enter(vnode, function () {
+            el.style.display = originalDisplay;
+          });
+        } else {
+          el.style.display = value ? originalDisplay : 'none';
+        }
+      },
+  
+      update: function update (el, ref, vnode) {
+        var value = ref.value;
+        var oldValue = ref.oldValue;
+  
+        /* istanbul ignore if */
+        if (!value === !oldValue) { return }
+        vnode = locateNode(vnode);
+        var transition$$1 = vnode.data && vnode.data.transition;
+        if (transition$$1) {
+          vnode.data.show = true;
+          if (value) {
+            enter(vnode, function () {
+              el.style.display = el.__vOriginalDisplay;
+            });
+          } else {
+            leave(vnode, function () {
+              el.style.display = 'none';
+            });
+          }
+        } else {
+          el.style.display = value ? el.__vOriginalDisplay : 'none';
+        }
+      },
+  
+      unbind: function unbind (
+        el,
+        binding,
+        vnode,
+        oldVnode,
+        isDestroy
+      ) {
+        if (!isDestroy) {
+          el.style.display = el.__vOriginalDisplay;
+        }
+      }
+    };
+  
+    var platformDirectives = {
+      model: directive,
+      show: show
+    };
+  
+    /*  */
+  
+    var transitionProps = {
+      name: String,
+      appear: Boolean,
+      css: Boolean,
+      mode: String,
+      type: String,
+      enterClass: String,
+      leaveClass: String,
+      enterToClass: String,
+      leaveToClass: String,
+      enterActiveClass: String,
+      leaveActiveClass: String,
+      appearClass: String,
+      appearActiveClass: String,
+      appearToClass: String,
+      duration: [Number, String, Object]
+    };
+  
+    // in case the child is also an abstract component, e.g. <keep-alive>
+    // we want to recursively retrieve the real component to be rendered
+    function getRealChild (vnode) {
+      var compOptions = vnode && vnode.componentOptions;
+      if (compOptions && compOptions.Ctor.options.abstract) {
+        return getRealChild(getFirstComponentChild(compOptions.children))
+      } else {
+        return vnode
+      }
+    }
+  
+    function extractTransitionData (comp) {
+      var data = {};
+      var options = comp.$options;
+      // props
+      for (var key in options.propsData) {
+        data[key] = comp[key];
+      }
+      // events.
+      // extract listeners and pass them directly to the transition methods
+      var listeners = options._parentListeners;
+      for (var key$1 in listeners) {
+        data[camelize(key$1)] = listeners[key$1];
+      }
+      return data
+    }
+  
+    function placeholder (h, rawChild) {
+      if (/\d-keep-alive$/.test(rawChild.tag)) {
+        return h('keep-alive', {
+          props: rawChild.componentOptions.propsData
+        })
+      }
+    }
+  
+    function hasParentTransition (vnode) {
+      while ((vnode = vnode.parent)) {
+        if (vnode.data.transition) {
+          return true
+        }
+      }
+    }
+  
+    function isSameChild (child, oldChild) {
+      return oldChild.key === child.key && oldChild.tag === child.tag
+    }
+  
+    var isNotTextNode = function (c) { return c.tag || isAsyncPlaceholder(c); };
+  
+    var isVShowDirective = function (d) { return d.name === 'show'; };
+  
+    var Transition = {
+      name: 'transition',
+      props: transitionProps,
+      abstract: true,
+  
+      render: function render (h) {
+        var this$1 = this;
+  
+        var children = this.$slots.default;
+        if (!children) {
+          return
+        }
+  
+        // filter out text nodes (possible whitespaces)
+        children = children.filter(isNotTextNode);
+        /* istanbul ignore if */
+        if (!children.length) {
+          return
+        }
+  
+        // warn multiple elements
+        if (children.length > 1) {
+          warn(
+            '<transition> can only be used on a single element. Use ' +
+            '<transition-group> for lists.',
+            this.$parent
+          );
+        }
+  
+        var mode = this.mode;
+  
+        // warn invalid mode
+        if (mode && mode !== 'in-out' && mode !== 'out-in'
+        ) {
+          warn(
+            'invalid <transition> mode: ' + mode,
+            this.$parent
+          );
+        }
+  
+        var rawChild = children[0];
+  
+        // if this is a component root node and the component's
+        // parent container node also has transition, skip.
+        if (hasParentTransition(this.$vnode)) {
+          return rawChild
+        }
+  
+        // apply transition data to child
+        // use getRealChild() to ignore abstract components e.g. keep-alive
+        var child = getRealChild(rawChild);
+        /* istanbul ignore if */
+        if (!child) {
+          return rawChild
+        }
+  
+        if (this._leaving) {
+          return placeholder(h, rawChild)
+        }
+  
+        // ensure a key that is unique to the vnode type and to this transition
+        // component instance. This key will be used to remove pending leaving nodes
+        // during entering.
+        var id = "__transition-" + (this._uid) + "-";
+        child.key = child.key == null
+          ? child.isComment
+            ? id + 'comment'
+            : id + child.tag
+          : isPrimitive(child.key)
+            ? (String(child.key).indexOf(id) === 0 ? child.key : id + child.key)
+            : child.key;
+  
+        var data = (child.data || (child.data = {})).transition = extractTransitionData(this);
+        var oldRawChild = this._vnode;
+        var oldChild = getRealChild(oldRawChild);
+  
+        // mark v-show
+        // so that the transition module can hand over the control to the directive
+        if (child.data.directives && child.data.directives.some(isVShowDirective)) {
+          child.data.show = true;
+        }
+  
+        if (
+          oldChild &&
+          oldChild.data &&
+          !isSameChild(child, oldChild) &&
+          !isAsyncPlaceholder(oldChild) &&
+          // #6687 component root is a comment node
+          !(oldChild.componentInstance && oldChild.componentInstance._vnode.isComment)
+        ) {
+          // replace old child transition data with fresh one
+          // important for dynamic transitions!
+          var oldData = oldChild.data.transition = extend({}, data);
+          // handle transition mode
+          if (mode === 'out-in') {
+            // return placeholder node and queue update when leave finishes
+            this._leaving = true;
+            mergeVNodeHook(oldData, 'afterLeave', function () {
+              this$1._leaving = false;
+              this$1.$forceUpdate();
+            });
+            return placeholder(h, rawChild)
+          } else if (mode === 'in-out') {
+            if (isAsyncPlaceholder(child)) {
+              return oldRawChild
+            }
+            var delayedLeave;
+            var performLeave = function () { delayedLeave(); };
+            mergeVNodeHook(data, 'afterEnter', performLeave);
+            mergeVNodeHook(data, 'enterCancelled', performLeave);
+            mergeVNodeHook(oldData, 'delayLeave', function (leave) { delayedLeave = leave; });
+          }
+        }
+  
+        return rawChild
+      }
+    };
+  
+    /*  */
+  
+    var props = extend({
+      tag: String,
+      moveClass: String
+    }, transitionProps);
+  
+    delete props.mode;
+  
+    var TransitionGroup = {
+      props: props,
+  
+      beforeMount: function beforeMount () {
+        var this$1 = this;
+  
+        var update = this._update;
+        this._update = function (vnode, hydrating) {
+          var restoreActiveInstance = setActiveInstance(this$1);
+          // force removing pass
+          this$1.__patch__(
+            this$1._vnode,
+            this$1.kept,
+            false, // hydrating
+            true // removeOnly (!important, avoids unnecessary moves)
+          );
+          this$1._vnode = this$1.kept;
+          restoreActiveInstance();
+          update.call(this$1, vnode, hydrating);
+        };
+      },
+  
+      render: function render (h) {
+        var tag = this.tag || this.$vnode.data.tag || 'span';
+        var map = Object.create(null);
+        var prevChildren = this.prevChildren = this.children;
+        var rawChildren = this.$slots.default || [];
+        var children = this.children = [];
+        var transitionData = extractTransitionData(this);
+  
+        for (var i = 0; i < rawChildren.length; i++) {
+          var c = rawChildren[i];
+          if (c.tag) {
+            if (c.key != null && String(c.key).indexOf('__vlist') !== 0) {
+              children.push(c);
+              map[c.key] = c
+              ;(c.data || (c.data = {})).transition = transitionData;
+            } else {
+              var opts = c.componentOptions;
+              var name = opts ? (opts.Ctor.options.name || opts.tag || '') : c.tag;
+              warn(("<transition-group> children must be keyed: <" + name + ">"));
+            }
+          }
+        }
+  
+        if (prevChildren) {
+          var kept = [];
+          var removed = [];
+          for (var i$1 = 0; i$1 < prevChildren.length; i$1++) {
+            var c$1 = prevChildren[i$1];
+            c$1.data.transition = transitionData;
+            c$1.data.pos = c$1.elm.getBoundingClientRect();
+            if (map[c$1.key]) {
+              kept.push(c$1);
+            } else {
+              removed.push(c$1);
+            }
+          }
+          this.kept = h(tag, null, kept);
+          this.removed = removed;
+        }
+  
+        return h(tag, null, children)
+      },
+  
+      updated: function updated () {
+        var children = this.prevChildren;
+        var moveClass = this.moveClass || ((this.name || 'v') + '-move');
+        if (!children.length || !this.hasMove(children[0].elm, moveClass)) {
+          return
+        }
+  
+        // we divide the work into three loops to avoid mixing DOM reads and writes
+        // in each iteration - which helps prevent layout thrashing.
+        children.forEach(callPendingCbs);
+        children.forEach(recordPosition);
+        children.forEach(applyTranslation);
+  
+        // force reflow to put everything in position
+        // assign to this to avoid being removed in tree-shaking
+        // $flow-disable-line
+        this._reflow = document.body.offsetHeight;
+  
+        children.forEach(function (c) {
+          if (c.data.moved) {
+            var el = c.elm;
+            var s = el.style;
+            addTransitionClass(el, moveClass);
+            s.transform = s.WebkitTransform = s.transitionDuration = '';
+            el.addEventListener(transitionEndEvent, el._moveCb = function cb (e) {
+              if (e && e.target !== el) {
+                return
+              }
+              if (!e || /transform$/.test(e.propertyName)) {
+                el.removeEventListener(transitionEndEvent, cb);
+                el._moveCb = null;
+                removeTransitionClass(el, moveClass);
+              }
+            });
+          }
+        });
+      },
+  
+      methods: {
+        hasMove: function hasMove (el, moveClass) {
+          /* istanbul ignore if */
+          if (!hasTransition) {
+            return false
+          }
+          /* istanbul ignore if */
+          if (this._hasMove) {
+            return this._hasMove
+          }
+          // Detect whether an element with the move class applied has
+          // CSS transitions. Since the element may be inside an entering
+          // transition at this very moment, we make a clone of it and remove
+          // all other transition classes applied to ensure only the move class
+          // is applied.
+          var clone = el.cloneNode();
+          if (el._transitionClasses) {
+            el._transitionClasses.forEach(function (cls) { removeClass(clone, cls); });
+          }
+          addClass(clone, moveClass);
+          clone.style.display = 'none';
+          this.$el.appendChild(clone);
+          var info = getTransitionInfo(clone);
+          this.$el.removeChild(clone);
+          return (this._hasMove = info.hasTransform)
+        }
+      }
+    };
+  
+    function callPendingCbs (c) {
+      /* istanbul ignore if */
+      if (c.elm._moveCb) {
+        c.elm._moveCb();
+      }
+      /* istanbul ignore if */
+      if (c.elm._enterCb) {
+        c.elm._enterCb();
+      }
+    }
+  
+    function recordPosition (c) {
+      c.data.newPos = c.elm.getBoundingClientRect();
+    }
+  
+    function applyTranslation (c) {
+      var oldPos = c.data.pos;
+      var newPos = c.data.newPos;
+      var dx = oldPos.left - newPos.left;
+      var dy = oldPos.top - newPos.top;
+      if (dx || dy) {
+        c.data.moved = true;
+        var s = c.elm.style;
+        s.transform = s.WebkitTransform = "translate(" + dx + "px," + dy + "px)";
+        s.transitionDuration = '0s';
+      }
+    }
+  
+    var platformComponents = {
+      Transition: Transition,
+      TransitionGroup: TransitionGroup
+    };
+  
+    /*  */
+  
+    // install platform specific utils
+    Vue.config.mustUseProp = mustUseProp;
+    Vue.config.isReservedTag = isReservedTag;
+    Vue.config.isReservedAttr = isReservedAttr;
+    Vue.config.getTagNamespace = getTagNamespace;
+    Vue.config.isUnknownElement = isUnknownElement;
+  
+    // install platform runtime directives & components
+    extend(Vue.options.directives, platformDirectives);
+    extend(Vue.options.components, platformComponents);
+  
+    // install platform patch function
+    Vue.prototype.__patch__ = inBrowser ? patch : noop;
+  
+    // public mount method
+    Vue.prototype.$mount = function (
+      el,
+      hydrating
+    ) {
+      el = el && inBrowser ? query(el) : undefined;
+      return mountComponent(this, el, hydrating)
+    };
+  
+    // devtools global hook
+    /* istanbul ignore next */
+    if (inBrowser) {
+      setTimeout(function () {
+        if (config.devtools) {
+          if (devtools) {
+            devtools.emit('init', Vue);
+          } else {
+            console[console.info ? 'info' : 'log'](
+              'Download the Vue Devtools extension for a better development experience:\n' +
+              'https://github.com/vuejs/vue-devtools'
+            );
+          }
+        }
+        if (config.productionTip !== false &&
+          typeof console !== 'undefined'
+        ) {
+          console[console.info ? 'info' : 'log'](
+            "You are running Vue in development mode.\n" +
+            "Make sure to turn on production mode when deploying for production.\n" +
+            "See more tips at https://vuejs.org/guide/deployment.html"
+          );
+        }
+      }, 0);
+    }
+  
+    /*  */
+  
+    var defaultTagRE = /\{\{((?:.|\r?\n)+?)\}\}/g;
+    var regexEscapeRE = /[-.*+?^${}()|[\]\/\\]/g;
+  
+    var buildRegex = cached(function (delimiters) {
+      var open = delimiters[0].replace(regexEscapeRE, '\\$&');
+      var close = delimiters[1].replace(regexEscapeRE, '\\$&');
+      return new RegExp(open + '((?:.|\\n)+?)' + close, 'g')
+    });
+  
+  
+  
+    function parseText (
+      text,
+      delimiters
+    ) {
+      var tagRE = delimiters ? buildRegex(delimiters) : defaultTagRE;
+      if (!tagRE.test(text)) {
+        return
+      }
+      var tokens = [];
+      var rawTokens = [];
+      var lastIndex = tagRE.lastIndex = 0;
+      var match, index, tokenValue;
+      while ((match = tagRE.exec(text))) {
+        index = match.index;
+        // push text token
+        if (index > lastIndex) {
+          rawTokens.push(tokenValue = text.slice(lastIndex, index));
+          tokens.push(JSON.stringify(tokenValue));
+        }
+        // tag token
+        var exp = parseFilters(match[1].trim());
+        tokens.push(("_s(" + exp + ")"));
+        rawTokens.push({ '@binding': exp });
+        lastIndex = index + match[0].length;
+      }
+      if (lastIndex < text.length) {
+        rawTokens.push(tokenValue = text.slice(lastIndex));
+        tokens.push(JSON.stringify(tokenValue));
+      }
+      return {
+        expression: tokens.join('+'),
+        tokens: rawTokens
+      }
+    }
+  
+    /*  */
+  
+    function transformNode (el, options) {
+      var warn = options.warn || baseWarn;
+      var staticClass = getAndRemoveAttr(el, 'class');
+      if (staticClass) {
+        var res = parseText(staticClass, options.delimiters);
+        if (res) {
+          warn(
+            "class=\"" + staticClass + "\": " +
+            'Interpolation inside attributes has been removed. ' +
+            'Use v-bind or the colon shorthand instead. For example, ' +
+            'instead of <div class="{{ val }}">, use <div :class="val">.',
+            el.rawAttrsMap['class']
+          );
+        }
+      }
+      if (staticClass) {
+        el.staticClass = JSON.stringify(staticClass);
+      }
+      var classBinding = getBindingAttr(el, 'class', false /* getStatic */);
+      if (classBinding) {
+        el.classBinding = classBinding;
+      }
+    }
+  
+    function genData (el) {
+      var data = '';
+      if (el.staticClass) {
+        data += "staticClass:" + (el.staticClass) + ",";
+      }
+      if (el.classBinding) {
+        data += "class:" + (el.classBinding) + ",";
+      }
+      return data
+    }
+  
+    var klass$1 = {
+      staticKeys: ['staticClass'],
+      transformNode: transformNode,
+      genData: genData
+    };
+  
+    /*  */
+  
+    function transformNode$1 (el, options) {
+      var warn = options.warn || baseWarn;
+      var staticStyle = getAndRemoveAttr(el, 'style');
+      if (staticStyle) {
+        /* istanbul ignore if */
+        {
+          var res = parseText(staticStyle, options.delimiters);
+          if (res) {
+            warn(
+              "style=\"" + staticStyle + "\": " +
+              'Interpolation inside attributes has been removed. ' +
+              'Use v-bind or the colon shorthand instead. For example, ' +
+              'instead of <div style="{{ val }}">, use <div :style="val">.',
+              el.rawAttrsMap['style']
+            );
+          }
+        }
+        el.staticStyle = JSON.stringify(parseStyleText(staticStyle));
+      }
+  
+      var styleBinding = getBindingAttr(el, 'style', false /* getStatic */);
+      if (styleBinding) {
+        el.styleBinding = styleBinding;
+      }
+    }
+  
+    function genData$1 (el) {
+      var data = '';
+      if (el.staticStyle) {
+        data += "staticStyle:" + (el.staticStyle) + ",";
+      }
+      if (el.styleBinding) {
+        data += "style:(" + (el.styleBinding) + "),";
+      }
+      return data
+    }
+  
+    var style$1 = {
+      staticKeys: ['staticStyle'],
+      transformNode: transformNode$1,
+      genData: genData$1
+    };
+  
+    /*  */
+  
+    var decoder;
+  
+    var he = {
+      decode: function decode (html) {
+        decoder = decoder || document.createElement('div');
+        decoder.innerHTML = html;
+        return decoder.textContent
+      }
+    };
+  
+    /*  */
+  
+    var isUnaryTag = makeMap(
+      'area,base,br,col,embed,frame,hr,img,input,isindex,keygen,' +
+      'link,meta,param,source,track,wbr'
+    );
+  
+    // Elements that you can, intentionally, leave open
+    // (and which close themselves)
+    var canBeLeftOpenTag = makeMap(
+      'colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr,source'
+    );
+  
+    // HTML5 tags https://html.spec.whatwg.org/multipage/indices.html#elements-3
+    // Phrasing Content https://html.spec.whatwg.org/multipage/dom.html#phrasing-content
+    var isNonPhrasingTag = makeMap(
+      'address,article,aside,base,blockquote,body,caption,col,colgroup,dd,' +
+      'details,dialog,div,dl,dt,fieldset,figcaption,figure,footer,form,' +
+      'h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,legend,li,menuitem,meta,' +
+      'optgroup,option,param,rp,rt,source,style,summary,tbody,td,tfoot,th,thead,' +
+      'title,tr,track'
+    );
+  
+    /**
+     * Not type-checking this file because it's mostly vendor code.
+     */
+  
+    // Regular Expressions for parsing tags and attributes
+    var attribute = /^\s*([^\s"'<>\/=]+)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/;
+    var dynamicArgAttribute = /^\s*((?:v-[\w-]+:|@|:|#)\[[^=]+\][^\s"'<>\/=]*)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/;
+    var ncname = "[a-zA-Z_][\\-\\.0-9_a-zA-Z" + (unicodeRegExp.source) + "]*";
+    var qnameCapture = "((?:" + ncname + "\\:)?" + ncname + ")";
+    var startTagOpen = new RegExp(("^<" + qnameCapture));
+    var startTagClose = /^\s*(\/?)>/;
+    var endTag = new RegExp(("^<\\/" + qnameCapture + "[^>]*>"));
+    var doctype = /^<!DOCTYPE [^>]+>/i;
+    // #7298: escape - to avoid being pased as HTML comment when inlined in page
+    var comment = /^<!\--/;
+    var conditionalComment = /^<!\[/;
+  
+    // Special Elements (can contain anything)
+    var isPlainTextElement = makeMap('script,style,textarea', true);
+    var reCache = {};
+  
+    var decodingMap = {
+      '&lt;': '<',
+      '&gt;': '>',
+      '&quot;': '"',
+      '&amp;': '&',
+      '&#10;': '\n',
+      '&#9;': '\t',
+      '&#39;': "'"
+    };
+    var encodedAttr = /&(?:lt|gt|quot|amp|#39);/g;
+    var encodedAttrWithNewLines = /&(?:lt|gt|quot|amp|#39|#10|#9);/g;
+  
+    // #5992
+    var isIgnoreNewlineTag = makeMap('pre,textarea', true);
+    var shouldIgnoreFirstNewline = function (tag, html) { return tag && isIgnoreNewlineTag(tag) && html[0] === '\n'; };
+  
+    function decodeAttr (value, shouldDecodeNewlines) {
+      var re = shouldDecodeNewlines ? encodedAttrWithNewLines : encodedAttr;
+      return value.replace(re, function (match) { return decodingMap[match]; })
+    }
+  
+    function parseHTML (html, options) {
+      var stack = [];
+      var expectHTML = options.expectHTML;
+      var isUnaryTag$$1 = options.isUnaryTag || no;
+      var canBeLeftOpenTag$$1 = options.canBeLeftOpenTag || no;
+      var index = 0;
+      var last, lastTag;
+      while (html) {
+        last = html;
+        // Make sure we're not in a plaintext content element like script/style
+        if (!lastTag || !isPlainTextElement(lastTag)) {
+          var textEnd = html.indexOf('<');
+          if (textEnd === 0) {
+            // Comment:
+            if (comment.test(html)) {
+              var commentEnd = html.indexOf('-->');
+  
+              if (commentEnd >= 0) {
+                if (options.shouldKeepComment) {
+                  options.comment(html.substring(4, commentEnd), index, index + commentEnd + 3);
+                }
+                advance(commentEnd + 3);
+                continue
+              }
+            }
+  
+            // http://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment
+            if (conditionalComment.test(html)) {
+              var conditionalEnd = html.indexOf(']>');
+  
+              if (conditionalEnd >= 0) {
+                advance(conditionalEnd + 2);
+                continue
+              }
+            }
+  
+            // Doctype:
+            var doctypeMatch = html.match(doctype);
+            if (doctypeMatch) {
+              advance(doctypeMatch[0].length);
+              continue
+            }
+  
+            // End tag:
+            var endTagMatch = html.match(endTag);
+            if (endTagMatch) {
+              var curIndex = index;
+              advance(endTagMatch[0].length);
+              parseEndTag(endTagMatch[1], curIndex, index);
+              continue
+            }
+  
+            // Start tag:
+            var startTagMatch = parseStartTag();
+            if (startTagMatch) {
+              handleStartTag(startTagMatch);
+              if (shouldIgnoreFirstNewline(startTagMatch.tagName, html)) {
+                advance(1);
+              }
+              continue
+            }
+          }
+  
+          var text = (void 0), rest = (void 0), next = (void 0);
+          if (textEnd >= 0) {
+            rest = html.slice(textEnd);
+            while (
+              !endTag.test(rest) &&
+              !startTagOpen.test(rest) &&
+              !comment.test(rest) &&
+              !conditionalComment.test(rest)
+            ) {
+              // < in plain text, be forgiving and treat it as text
+              next = rest.indexOf('<', 1);
+              if (next < 0) { break }
+              textEnd += next;
+              rest = html.slice(textEnd);
+            }
+            text = html.substring(0, textEnd);
+          }
+  
+          if (textEnd < 0) {
+            text = html;
+          }
+  
+          if (text) {
+            advance(text.length);
+          }
+  
+          if (options.chars && text) {
+            options.chars(text, index - text.length, index);
+          }
+        } else {
+          var endTagLength = 0;
+          var stackedTag = lastTag.toLowerCase();
+          var reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)(</' + stackedTag + '[^>]*>)', 'i'));
+          var rest$1 = html.replace(reStackedTag, function (all, text, endTag) {
+            endTagLength = endTag.length;
+            if (!isPlainTextElement(stackedTag) && stackedTag !== 'noscript') {
+              text = text
+                .replace(/<!\--([\s\S]*?)-->/g, '$1') // #7298
+                .replace(/<!\[CDATA\[([\s\S]*?)]]>/g, '$1');
+            }
+            if (shouldIgnoreFirstNewline(stackedTag, text)) {
+              text = text.slice(1);
+            }
+            if (options.chars) {
+              options.chars(text);
+            }
+            return ''
+          });
+          index += html.length - rest$1.length;
+          html = rest$1;
+          parseEndTag(stackedTag, index - endTagLength, index);
+        }
+  
+        if (html === last) {
+          options.chars && options.chars(html);
+          if (!stack.length && options.warn) {
+            options.warn(("Mal-formatted tag at end of template: \"" + html + "\""), { start: index + html.length });
+          }
+          break
+        }
+      }
+  
+      // Clean up any remaining tags
+      parseEndTag();
+  
+      function advance (n) {
+        index += n;
+        html = html.substring(n);
+      }
+  
+      function parseStartTag () {
+        var start = html.match(startTagOpen);
+        if (start) {
+          var match = {
+            tagName: start[1],
+            attrs: [],
+            start: index
+          };
+          advance(start[0].length);
+          var end, attr;
+          while (!(end = html.match(startTagClose)) && (attr = html.match(dynamicArgAttribute) || html.match(attribute))) {
+            attr.start = index;
+            advance(attr[0].length);
+            attr.end = index;
+            match.attrs.push(attr);
+          }
+          if (end) {
+            match.unarySlash = end[1];
+            advance(end[0].length);
+            match.end = index;
+            return match
+          }
+        }
+      }
+  
+      function handleStartTag (match) {
+        var tagName = match.tagName;
+        var unarySlash = match.unarySlash;
+  
+        if (expectHTML) {
+          if (lastTag === 'p' && isNonPhrasingTag(tagName)) {
+            parseEndTag(lastTag);
+          }
+          if (canBeLeftOpenTag$$1(tagName) && lastTag === tagName) {
+            parseEndTag(tagName);
+          }
+        }
+  
+        var unary = isUnaryTag$$1(tagName) || !!unarySlash;
+  
+        var l = match.attrs.length;
+        var attrs = new Array(l);
+        for (var i = 0; i < l; i++) {
+          var args = match.attrs[i];
+          var value = args[3] || args[4] || args[5] || '';
+          var shouldDecodeNewlines = tagName === 'a' && args[1] === 'href'
+            ? options.shouldDecodeNewlinesForHref
+            : options.shouldDecodeNewlines;
+          attrs[i] = {
+            name: args[1],
+            value: decodeAttr(value, shouldDecodeNewlines)
+          };
+          if (options.outputSourceRange) {
+            attrs[i].start = args.start + args[0].match(/^\s*/).length;
+            attrs[i].end = args.end;
+          }
+        }
+  
+        if (!unary) {
+          stack.push({ tag: tagName, lowerCasedTag: tagName.toLowerCase(), attrs: attrs, start: match.start, end: match.end });
+          lastTag = tagName;
+        }
+  
+        if (options.start) {
+          options.start(tagName, attrs, unary, match.start, match.end);
+        }
+      }
+  
+      function parseEndTag (tagName, start, end) {
+        var pos, lowerCasedTagName;
+        if (start == null) { start = index; }
+        if (end == null) { end = index; }
+  
+        // Find the closest opened tag of the same type
+        if (tagName) {
+          lowerCasedTagName = tagName.toLowerCase();
+          for (pos = stack.length - 1; pos >= 0; pos--) {
+            if (stack[pos].lowerCasedTag === lowerCasedTagName) {
+              break
+            }
+          }
+        } else {
+          // If no tag name is provided, clean shop
+          pos = 0;
+        }
+  
+        if (pos >= 0) {
+          // Close all the open elements, up the stack
+          for (var i = stack.length - 1; i >= pos; i--) {
+            if (i > pos || !tagName &&
+              options.warn
+            ) {
+              options.warn(
+                ("tag <" + (stack[i].tag) + "> has no matching end tag."),
+                { start: stack[i].start, end: stack[i].end }
+              );
+            }
+            if (options.end) {
+              options.end(stack[i].tag, start, end);
+            }
+          }
+  
+          // Remove the open elements from the stack
+          stack.length = pos;
+          lastTag = pos && stack[pos - 1].tag;
+        } else if (lowerCasedTagName === 'br') {
+          if (options.start) {
+            options.start(tagName, [], true, start, end);
+          }
+        } else if (lowerCasedTagName === 'p') {
+          if (options.start) {
+            options.start(tagName, [], false, start, end);
+          }
+          if (options.end) {
+            options.end(tagName, start, end);
+          }
+        }
+      }
+    }
+  
+    /*  */
+  
+    var onRE = /^@|^v-on:/;
+    var dirRE = /^v-|^@|^:/;
+    var forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/;
+    var forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/;
+    var stripParensRE = /^\(|\)$/g;
+    var dynamicArgRE = /^\[.*\]$/;
+  
+    var argRE = /:(.*)$/;
+    var bindRE = /^:|^\.|^v-bind:/;
+    var modifierRE = /\.[^.\]]+(?=[^\]]*$)/g;
+  
+    var slotRE = /^v-slot(:|$)|^#/;
+  
+    var lineBreakRE = /[\r\n]/;
+    var whitespaceRE$1 = /\s+/g;
+  
+    var invalidAttributeRE = /[\s"'<>\/=]/;
+  
+    var decodeHTMLCached = cached(he.decode);
+  
+    var emptySlotScopeToken = "_empty_";
+  
+    // configurable state
+    var warn$2;
+    var delimiters;
+    var transforms;
+    var preTransforms;
+    var postTransforms;
+    var platformIsPreTag;
+    var platformMustUseProp;
+    var platformGetTagNamespace;
+    var maybeComponent;
+  
+    function createASTElement (
+      tag,
+      attrs,
+      parent
+    ) {
+      return {
+        type: 1,
+        tag: tag,
+        attrsList: attrs,
+        attrsMap: makeAttrsMap(attrs),
+        rawAttrsMap: {},
+        parent: parent,
+        children: []
+      }
+    }
+  
+    /**
+     * Convert HTML string to AST.
+     */
+    function parse (
+      template,
+      options
+    ) {
+      warn$2 = options.warn || baseWarn;
+  
+      platformIsPreTag = options.isPreTag || no;
+      platformMustUseProp = options.mustUseProp || no;
+      platformGetTagNamespace = options.getTagNamespace || no;
+      var isReservedTag = options.isReservedTag || no;
+      maybeComponent = function (el) { return !!el.component || !isReservedTag(el.tag); };
+  
+      transforms = pluckModuleFunction(options.modules, 'transformNode');
+      preTransforms = pluckModuleFunction(options.modules, 'preTransformNode');
+      postTransforms = pluckModuleFunction(options.modules, 'postTransformNode');
+  
+      delimiters = options.delimiters;
+  
+      var stack = [];
+      var preserveWhitespace = options.preserveWhitespace !== false;
+      var whitespaceOption = options.whitespace;
+      var root;
+      var currentParent;
+      var inVPre = false;
+      var inPre = false;
+      var warned = false;
+  
+      function warnOnce (msg, range) {
+        if (!warned) {
+          warned = true;
+          warn$2(msg, range);
+        }
+      }
+  
+      function closeElement (element) {
+        trimEndingWhitespace(element);
+        if (!inVPre && !element.processed) {
+          element = processElement(element, options);
+        }
+        // tree management
+        if (!stack.length && element !== root) {
+          // allow root elements with v-if, v-else-if and v-else
+          if (root.if && (element.elseif || element.else)) {
+            {
+              checkRootConstraints(element);
+            }
+            addIfCondition(root, {
+              exp: element.elseif,
+              block: element
+            });
+          } else {
+            warnOnce(
+              "Component template should contain exactly one root element. " +
+              "If you are using v-if on multiple elements, " +
+              "use v-else-if to chain them instead.",
+              { start: element.start }
+            );
+          }
+        }
+        if (currentParent && !element.forbidden) {
+          if (element.elseif || element.else) {
+            processIfConditions(element, currentParent);
+          } else {
+            if (element.slotScope) {
+              // scoped slot
+              // keep it in the children list so that v-else(-if) conditions can
+              // find it as the prev node.
+              var name = element.slotTarget || '"default"'
+              ;(currentParent.scopedSlots || (currentParent.scopedSlots = {}))[name] = element;
+            }
+            currentParent.children.push(element);
+            element.parent = currentParent;
+          }
+        }
+  
+        // final children cleanup
+        // filter out scoped slots
+        element.children = element.children.filter(function (c) { return !(c).slotScope; });
+        // remove trailing whitespace node again
+        trimEndingWhitespace(element);
+  
+        // check pre state
+        if (element.pre) {
+          inVPre = false;
+        }
+        if (platformIsPreTag(element.tag)) {
+          inPre = false;
+        }
+        // apply post-transforms
+        for (var i = 0; i < postTransforms.length; i++) {
+          postTransforms[i](element, options);
+        }
+      }
+  
+      function trimEndingWhitespace (el) {
+        // remove trailing whitespace node
+        if (!inPre) {
+          var lastNode;
+          while (
+            (lastNode = el.children[el.children.length - 1]) &&
+            lastNode.type === 3 &&
+            lastNode.text === ' '
+          ) {
+            el.children.pop();
+          }
+        }
+      }
+  
+      function checkRootConstraints (el) {
+        if (el.tag === 'slot' || el.tag === 'template') {
+          warnOnce(
+            "Cannot use <" + (el.tag) + "> as component root element because it may " +
+            'contain multiple nodes.',
+            { start: el.start }
+          );
+        }
+        if (el.attrsMap.hasOwnProperty('v-for')) {
+          warnOnce(
+            'Cannot use v-for on stateful component root element because ' +
+            'it renders multiple elements.',
+            el.rawAttrsMap['v-for']
+          );
+        }
+      }
+  
+      parseHTML(template, {
+        warn: warn$2,
+        expectHTML: options.expectHTML,
+        isUnaryTag: options.isUnaryTag,
+        canBeLeftOpenTag: options.canBeLeftOpenTag,
+        shouldDecodeNewlines: options.shouldDecodeNewlines,
+        shouldDecodeNewlinesForHref: options.shouldDecodeNewlinesForHref,
+        shouldKeepComment: options.comments,
+        outputSourceRange: options.outputSourceRange,
+        start: function start (tag, attrs, unary, start$1, end) {
+          // check namespace.
+          // inherit parent ns if there is one
+          var ns = (currentParent && currentParent.ns) || platformGetTagNamespace(tag);
+  
+          // handle IE svg bug
+          /* istanbul ignore if */
+          if (isIE && ns === 'svg') {
+            attrs = guardIESVGBug(attrs);
+          }
+  
+          var element = createASTElement(tag, attrs, currentParent);
+          if (ns) {
+            element.ns = ns;
+          }
+  
+          {
+            if (options.outputSourceRange) {
+              element.start = start$1;
+              element.end = end;
+              element.rawAttrsMap = element.attrsList.reduce(function (cumulated, attr) {
+                cumulated[attr.name] = attr;
+                return cumulated
+              }, {});
+            }
+            attrs.forEach(function (attr) {
+              if (invalidAttributeRE.test(attr.name)) {
+                warn$2(
+                  "Invalid dynamic argument expression: attribute names cannot contain " +
+                  "spaces, quotes, <, >, / or =.",
+                  {
+                    start: attr.start + attr.name.indexOf("["),
+                    end: attr.start + attr.name.length
+                  }
+                );
+              }
+            });
+          }
+  
+          if (isForbiddenTag(element) && !isServerRendering()) {
+            element.forbidden = true;
+            warn$2(
+              'Templates should only be responsible for mapping the state to the ' +
+              'UI. Avoid placing tags with side-effects in your templates, such as ' +
+              "<" + tag + ">" + ', as they will not be parsed.',
+              { start: element.start }
+            );
+          }
+  
+          // apply pre-transforms
+          for (var i = 0; i < preTransforms.length; i++) {
+            element = preTransforms[i](element, options) || element;
+          }
+  
+          if (!inVPre) {
+            processPre(element);
+            if (element.pre) {
+              inVPre = true;
+            }
+          }
+          if (platformIsPreTag(element.tag)) {
+            inPre = true;
+          }
+          if (inVPre) {
+            processRawAttrs(element);
+          } else if (!element.processed) {
+            // structural directives
+            processFor(element);
+            processIf(element);
+            processOnce(element);
+          }
+  
+          if (!root) {
+            root = element;
+            {
+              checkRootConstraints(root);
+            }
+          }
+  
+          if (!unary) {
+            currentParent = element;
+            stack.push(element);
+          } else {
+            closeElement(element);
+          }
+        },
+  
+        end: function end (tag, start, end$1) {
+          var element = stack[stack.length - 1];
+          // pop stack
+          stack.length -= 1;
+          currentParent = stack[stack.length - 1];
+          if (options.outputSourceRange) {
+            element.end = end$1;
+          }
+          closeElement(element);
+        },
+  
+        chars: function chars (text, start, end) {
+          if (!currentParent) {
+            {
+              if (text === template) {
+                warnOnce(
+                  'Component template requires a root element, rather than just text.',
+                  { start: start }
+                );
+              } else if ((text = text.trim())) {
+                warnOnce(
+                  ("text \"" + text + "\" outside root element will be ignored."),
+                  { start: start }
+                );
+              }
+            }
+            return
+          }
+          // IE textarea placeholder bug
+          /* istanbul ignore if */
+          if (isIE &&
+            currentParent.tag === 'textarea' &&
+            currentParent.attrsMap.placeholder === text
+          ) {
+            return
+          }
+          var children = currentParent.children;
+          if (inPre || text.trim()) {
+            text = isTextTag(currentParent) ? text : decodeHTMLCached(text);
+          } else if (!children.length) {
+            // remove the whitespace-only node right after an opening tag
+            text = '';
+          } else if (whitespaceOption) {
+            if (whitespaceOption === 'condense') {
+              // in condense mode, remove the whitespace node if it contains
+              // line break, otherwise condense to a single space
+              text = lineBreakRE.test(text) ? '' : ' ';
+            } else {
+              text = ' ';
+            }
+          } else {
+            text = preserveWhitespace ? ' ' : '';
+          }
+          if (text) {
+            if (!inPre && whitespaceOption === 'condense') {
+              // condense consecutive whitespaces into single space
+              text = text.replace(whitespaceRE$1, ' ');
+            }
+            var res;
+            var child;
+            if (!inVPre && text !== ' ' && (res = parseText(text, delimiters))) {
+              child = {
+                type: 2,
+                expression: res.expression,
+                tokens: res.tokens,
+                text: text
+              };
+            } else if (text !== ' ' || !children.length || children[children.length - 1].text !== ' ') {
+              child = {
+                type: 3,
+                text: text
+              };
+            }
+            if (child) {
+              if (options.outputSourceRange) {
+                child.start = start;
+                child.end = end;
+              }
+              children.push(child);
+            }
+          }
+        },
+        comment: function comment (text, start, end) {
+          // adding anyting as a sibling to the root node is forbidden
+          // comments should still be allowed, but ignored
+          if (currentParent) {
+            var child = {
+              type: 3,
+              text: text,
+              isComment: true
+            };
+            if (options.outputSourceRange) {
+              child.start = start;
+              child.end = end;
+            }
+            currentParent.children.push(child);
+          }
+        }
+      });
+      return root
+    }
+  
+    function processPre (el) {
+      if (getAndRemoveAttr(el, 'v-pre') != null) {
+        el.pre = true;
+      }
+    }
+  
+    function processRawAttrs (el) {
+      var list = el.attrsList;
+      var len = list.length;
+      if (len) {
+        var attrs = el.attrs = new Array(len);
+        for (var i = 0; i < len; i++) {
+          attrs[i] = {
+            name: list[i].name,
+            value: JSON.stringify(list[i].value)
+          };
+          if (list[i].start != null) {
+            attrs[i].start = list[i].start;
+            attrs[i].end = list[i].end;
+          }
+        }
+      } else if (!el.pre) {
+        // non root node in pre blocks with no attributes
+        el.plain = true;
+      }
+    }
+  
+    function processElement (
+      element,
+      options
+    ) {
+      processKey(element);
+  
+      // determine whether this is a plain element after
+      // removing structural attributes
+      element.plain = (
+        !element.key &&
+        !element.scopedSlots &&
+        !element.attrsList.length
+      );
+  
+      processRef(element);
+      processSlotContent(element);
+      processSlotOutlet(element);
+      processComponent(element);
+      for (var i = 0; i < transforms.length; i++) {
+        element = transforms[i](element, options) || element;
+      }
+      processAttrs(element);
+      return element
+    }
+  
+    function processKey (el) {
+      var exp = getBindingAttr(el, 'key');
+      if (exp) {
+        {
+          if (el.tag === 'template') {
+            warn$2(
+              "<template> cannot be keyed. Place the key on real elements instead.",
+              getRawBindingAttr(el, 'key')
+            );
+          }
+          if (el.for) {
+            var iterator = el.iterator2 || el.iterator1;
+            var parent = el.parent;
+            if (iterator && iterator === exp && parent && parent.tag === 'transition-group') {
+              warn$2(
+                "Do not use v-for index as key on <transition-group> children, " +
+                "this is the same as not using keys.",
+                getRawBindingAttr(el, 'key'),
+                true /* tip */
+              );
+            }
+          }
+        }
+        el.key = exp;
+      }
+    }
+  
+    function processRef (el) {
+      var ref = getBindingAttr(el, 'ref');
+      if (ref) {
+        el.ref = ref;
+        el.refInFor = checkInFor(el);
+      }
+    }
+  
+    function processFor (el) {
+      var exp;
+      if ((exp = getAndRemoveAttr(el, 'v-for'))) {
+        var res = parseFor(exp);
+        if (res) {
+          extend(el, res);
+        } else {
+          warn$2(
+            ("Invalid v-for expression: " + exp),
+            el.rawAttrsMap['v-for']
+          );
+        }
+      }
+    }
+  
+  
+  
+    function parseFor (exp) {
+      var inMatch = exp.match(forAliasRE);
+      if (!inMatch) { return }
+      var res = {};
+      res.for = inMatch[2].trim();
+      var alias = inMatch[1].trim().replace(stripParensRE, '');
+      var iteratorMatch = alias.match(forIteratorRE);
+      if (iteratorMatch) {
+        res.alias = alias.replace(forIteratorRE, '').trim();
+        res.iterator1 = iteratorMatch[1].trim();
+        if (iteratorMatch[2]) {
+          res.iterator2 = iteratorMatch[2].trim();
+        }
+      } else {
+        res.alias = alias;
+      }
+      return res
+    }
+  
+    function processIf (el) {
+      var exp = getAndRemoveAttr(el, 'v-if');
+      if (exp) {
+        el.if = exp;
+        addIfCondition(el, {
+          exp: exp,
+          block: el
+        });
+      } else {
+        if (getAndRemoveAttr(el, 'v-else') != null) {
+          el.else = true;
+        }
+        var elseif = getAndRemoveAttr(el, 'v-else-if');
+        if (elseif) {
+          el.elseif = elseif;
+        }
+      }
+    }
+  
+    function processIfConditions (el, parent) {
+      var prev = findPrevElement(parent.children);
+      if (prev && prev.if) {
+        addIfCondition(prev, {
+          exp: el.elseif,
+          block: el
+        });
+      } else {
+        warn$2(
+          "v-" + (el.elseif ? ('else-if="' + el.elseif + '"') : 'else') + " " +
+          "used on element <" + (el.tag) + "> without corresponding v-if.",
+          el.rawAttrsMap[el.elseif ? 'v-else-if' : 'v-else']
+        );
+      }
+    }
+  
+    function findPrevElement (children) {
+      var i = children.length;
+      while (i--) {
+        if (children[i].type === 1) {
+          return children[i]
+        } else {
+          if (children[i].text !== ' ') {
+            warn$2(
+              "text \"" + (children[i].text.trim()) + "\" between v-if and v-else(-if) " +
+              "will be ignored.",
+              children[i]
+            );
+          }
+          children.pop();
+        }
+      }
+    }
+  
+    function addIfCondition (el, condition) {
+      if (!el.ifConditions) {
+        el.ifConditions = [];
+      }
+      el.ifConditions.push(condition);
+    }
+  
+    function processOnce (el) {
+      var once$$1 = getAndRemoveAttr(el, 'v-once');
+      if (once$$1 != null) {
+        el.once = true;
+      }
+    }
+  
+    // handle content being passed to a component as slot,
+    // e.g. <template slot="xxx">, <div slot-scope="xxx">
+    function processSlotContent (el) {
+      var slotScope;
+      if (el.tag === 'template') {
+        slotScope = getAndRemoveAttr(el, 'scope');
+        /* istanbul ignore if */
+        if (slotScope) {
+          warn$2(
+            "the \"scope\" attribute for scoped slots have been deprecated and " +
+            "replaced by \"slot-scope\" since 2.5. The new \"slot-scope\" attribute " +
+            "can also be used on plain elements in addition to <template> to " +
+            "denote scoped slots.",
+            el.rawAttrsMap['scope'],
+            true
+          );
+        }
+        el.slotScope = slotScope || getAndRemoveAttr(el, 'slot-scope');
+      } else if ((slotScope = getAndRemoveAttr(el, 'slot-scope'))) {
+        /* istanbul ignore if */
+        if (el.attrsMap['v-for']) {
+          warn$2(
+            "Ambiguous combined usage of slot-scope and v-for on <" + (el.tag) + "> " +
+            "(v-for takes higher priority). Use a wrapper <template> for the " +
+            "scoped slot to make it clearer.",
+            el.rawAttrsMap['slot-scope'],
+            true
+          );
+        }
+        el.slotScope = slotScope;
+      }
+  
+      // slot="xxx"
+      var slotTarget = getBindingAttr(el, 'slot');
+      if (slotTarget) {
+        el.slotTarget = slotTarget === '""' ? '"default"' : slotTarget;
+        el.slotTargetDynamic = !!(el.attrsMap[':slot'] || el.attrsMap['v-bind:slot']);
+        // preserve slot as an attribute for native shadow DOM compat
+        // only for non-scoped slots.
+        if (el.tag !== 'template' && !el.slotScope) {
+          addAttr(el, 'slot', slotTarget, getRawBindingAttr(el, 'slot'));
+        }
+      }
+  
+      // 2.6 v-slot syntax
+      {
+        if (el.tag === 'template') {
+          // v-slot on <template>
+          var slotBinding = getAndRemoveAttrByRegex(el, slotRE);
+          if (slotBinding) {
+            {
+              if (el.slotTarget || el.slotScope) {
+                warn$2(
+                  "Unexpected mixed usage of different slot syntaxes.",
+                  el
+                );
+              }
+              if (el.parent && !maybeComponent(el.parent)) {
+                warn$2(
+                  "<template v-slot> can only appear at the root level inside " +
+                  "the receiving the component",
+                  el
+                );
+              }
+            }
+            var ref = getSlotName(slotBinding);
+            var name = ref.name;
+            var dynamic = ref.dynamic;
+            el.slotTarget = name;
+            el.slotTargetDynamic = dynamic;
+            el.slotScope = slotBinding.value || emptySlotScopeToken; // force it into a scoped slot for perf
+          }
+        } else {
+          // v-slot on component, denotes default slot
+          var slotBinding$1 = getAndRemoveAttrByRegex(el, slotRE);
+          if (slotBinding$1) {
+            {
+              if (!maybeComponent(el)) {
+                warn$2(
+                  "v-slot can only be used on components or <template>.",
+                  slotBinding$1
+                );
+              }
+              if (el.slotScope || el.slotTarget) {
+                warn$2(
+                  "Unexpected mixed usage of different slot syntaxes.",
+                  el
+                );
+              }
+              if (el.scopedSlots) {
+                warn$2(
+                  "To avoid scope ambiguity, the default slot should also use " +
+                  "<template> syntax when there are other named slots.",
+                  slotBinding$1
+                );
+              }
+            }
+            // add the component's children to its default slot
+            var slots = el.scopedSlots || (el.scopedSlots = {});
+            var ref$1 = getSlotName(slotBinding$1);
+            var name$1 = ref$1.name;
+            var dynamic$1 = ref$1.dynamic;
+            var slotContainer = slots[name$1] = createASTElement('template', [], el);
+            slotContainer.slotTarget = name$1;
+            slotContainer.slotTargetDynamic = dynamic$1;
+            slotContainer.children = el.children.filter(function (c) {
+              if (!c.slotScope) {
+                c.parent = slotContainer;
+                return true
+              }
+            });
+            slotContainer.slotScope = slotBinding$1.value || emptySlotScopeToken;
+            // remove children as they are returned from scopedSlots now
+            el.children = [];
+            // mark el non-plain so data gets generated
+            el.plain = false;
+          }
+        }
+      }
+    }
+  
+    function getSlotName (binding) {
+      var name = binding.name.replace(slotRE, '');
+      if (!name) {
+        if (binding.name[0] !== '#') {
+          name = 'default';
+        } else {
+          warn$2(
+            "v-slot shorthand syntax requires a slot name.",
+            binding
+          );
+        }
+      }
+      return dynamicArgRE.test(name)
+        // dynamic [name]
+        ? { name: name.slice(1, -1), dynamic: true }
+        // static name
+        : { name: ("\"" + name + "\""), dynamic: false }
+    }
+  
+    // handle <slot/> outlets
+    function processSlotOutlet (el) {
+      if (el.tag === 'slot') {
+        el.slotName = getBindingAttr(el, 'name');
+        if (el.key) {
+          warn$2(
+            "`key` does not work on <slot> because slots are abstract outlets " +
+            "and can possibly expand into multiple elements. " +
+            "Use the key on a wrapping element instead.",
+            getRawBindingAttr(el, 'key')
+          );
+        }
+      }
+    }
+  
+    function processComponent (el) {
+      var binding;
+      if ((binding = getBindingAttr(el, 'is'))) {
+        el.component = binding;
+      }
+      if (getAndRemoveAttr(el, 'inline-template') != null) {
+        el.inlineTemplate = true;
+      }
+    }
+  
+    function processAttrs (el) {
+      var list = el.attrsList;
+      var i, l, name, rawName, value, modifiers, syncGen, isDynamic;
+      for (i = 0, l = list.length; i < l; i++) {
+        name = rawName = list[i].name;
+        value = list[i].value;
+        if (dirRE.test(name)) {
+          // mark element as dynamic
+          el.hasBindings = true;
+          // modifiers
+          modifiers = parseModifiers(name.replace(dirRE, ''));
+          // support .foo shorthand syntax for the .prop modifier
+          if (modifiers) {
+            name = name.replace(modifierRE, '');
+          }
+          if (bindRE.test(name)) { // v-bind
+            name = name.replace(bindRE, '');
+            value = parseFilters(value);
+            isDynamic = dynamicArgRE.test(name);
+            if (isDynamic) {
+              name = name.slice(1, -1);
+            }
+            if (
+              value.trim().length === 0
+            ) {
+              warn$2(
+                ("The value for a v-bind expression cannot be empty. Found in \"v-bind:" + name + "\"")
+              );
+            }
+            if (modifiers) {
+              if (modifiers.prop && !isDynamic) {
+                name = camelize(name);
+                if (name === 'innerHtml') { name = 'innerHTML'; }
+              }
+              if (modifiers.camel && !isDynamic) {
+                name = camelize(name);
+              }
+              if (modifiers.sync) {
+                syncGen = genAssignmentCode(value, "$event");
+                if (!isDynamic) {
+                  addHandler(
+                    el,
+                    ("update:" + (camelize(name))),
+                    syncGen,
+                    null,
+                    false,
+                    warn$2,
+                    list[i]
+                  );
+                  if (hyphenate(name) !== camelize(name)) {
+                    addHandler(
+                      el,
+                      ("update:" + (hyphenate(name))),
+                      syncGen,
+                      null,
+                      false,
+                      warn$2,
+                      list[i]
+                    );
+                  }
+                } else {
+                  // handler w/ dynamic event name
+                  addHandler(
+                    el,
+                    ("\"update:\"+(" + name + ")"),
+                    syncGen,
+                    null,
+                    false,
+                    warn$2,
+                    list[i],
+                    true // dynamic
+                  );
+                }
+              }
+            }
+            if ((modifiers && modifiers.prop) || (
+              !el.component && platformMustUseProp(el.tag, el.attrsMap.type, name)
+            )) {
+              addProp(el, name, value, list[i], isDynamic);
+            } else {
+              addAttr(el, name, value, list[i], isDynamic);
+            }
+          } else if (onRE.test(name)) { // v-on
+            name = name.replace(onRE, '');
+            isDynamic = dynamicArgRE.test(name);
+            if (isDynamic) {
+              name = name.slice(1, -1);
+            }
+            addHandler(el, name, value, modifiers, false, warn$2, list[i], isDynamic);
+          } else { // normal directives
+            name = name.replace(dirRE, '');
+            // parse arg
+            var argMatch = name.match(argRE);
+            var arg = argMatch && argMatch[1];
+            isDynamic = false;
+            if (arg) {
+              name = name.slice(0, -(arg.length + 1));
+              if (dynamicArgRE.test(arg)) {
+                arg = arg.slice(1, -1);
+                isDynamic = true;
+              }
+            }
+            addDirective(el, name, rawName, value, arg, isDynamic, modifiers, list[i]);
+            if (name === 'model') {
+              checkForAliasModel(el, value);
+            }
+          }
+        } else {
+          // literal attribute
+          {
+            var res = parseText(value, delimiters);
+            if (res) {
+              warn$2(
+                name + "=\"" + value + "\": " +
+                'Interpolation inside attributes has been removed. ' +
+                'Use v-bind or the colon shorthand instead. For example, ' +
+                'instead of <div id="{{ val }}">, use <div :id="val">.',
+                list[i]
+              );
+            }
+          }
+          addAttr(el, name, JSON.stringify(value), list[i]);
+          // #6887 firefox doesn't update muted state if set via attribute
+          // even immediately after element creation
+          if (!el.component &&
+              name === 'muted' &&
+              platformMustUseProp(el.tag, el.attrsMap.type, name)) {
+            addProp(el, name, 'true', list[i]);
+          }
+        }
+      }
+    }
+  
+    function checkInFor (el) {
+      var parent = el;
+      while (parent) {
+        if (parent.for !== undefined) {
+          return true
+        }
+        parent = parent.parent;
+      }
+      return false
+    }
+  
+    function parseModifiers (name) {
+      var match = name.match(modifierRE);
+      if (match) {
+        var ret = {};
+        match.forEach(function (m) { ret[m.slice(1)] = true; });
+        return ret
+      }
+    }
+  
+    function makeAttrsMap (attrs) {
+      var map = {};
+      for (var i = 0, l = attrs.length; i < l; i++) {
+        if (
+          map[attrs[i].name] && !isIE && !isEdge
+        ) {
+          warn$2('duplicate attribute: ' + attrs[i].name, attrs[i]);
+        }
+        map[attrs[i].name] = attrs[i].value;
+      }
+      return map
+    }
+  
+    // for script (e.g. type="x/template") or style, do not decode content
+    function isTextTag (el) {
+      return el.tag === 'script' || el.tag === 'style'
+    }
+  
+    function isForbiddenTag (el) {
+      return (
+        el.tag === 'style' ||
+        (el.tag === 'script' && (
+          !el.attrsMap.type ||
+          el.attrsMap.type === 'text/javascript'
+        ))
+      )
+    }
+  
+    var ieNSBug = /^xmlns:NS\d+/;
+    var ieNSPrefix = /^NS\d+:/;
+  
+    /* istanbul ignore next */
+    function guardIESVGBug (attrs) {
+      var res = [];
+      for (var i = 0; i < attrs.length; i++) {
+        var attr = attrs[i];
+        if (!ieNSBug.test(attr.name)) {
+          attr.name = attr.name.replace(ieNSPrefix, '');
+          res.push(attr);
+        }
+      }
+      return res
+    }
+  
+    function checkForAliasModel (el, value) {
+      var _el = el;
+      while (_el) {
+        if (_el.for && _el.alias === value) {
+          warn$2(
+            "<" + (el.tag) + " v-model=\"" + value + "\">: " +
+            "You are binding v-model directly to a v-for iteration alias. " +
+            "This will not be able to modify the v-for source array because " +
+            "writing to the alias is like modifying a function local variable. " +
+            "Consider using an array of objects and use v-model on an object property instead.",
+            el.rawAttrsMap['v-model']
+          );
+        }
+        _el = _el.parent;
+      }
+    }
+  
+    /*  */
+  
+    function preTransformNode (el, options) {
+      if (el.tag === 'input') {
+        var map = el.attrsMap;
+        if (!map['v-model']) {
+          return
+        }
+  
+        var typeBinding;
+        if (map[':type'] || map['v-bind:type']) {
+          typeBinding = getBindingAttr(el, 'type');
+        }
+        if (!map.type && !typeBinding && map['v-bind']) {
+          typeBinding = "(" + (map['v-bind']) + ").type";
+        }
+  
+        if (typeBinding) {
+          var ifCondition = getAndRemoveAttr(el, 'v-if', true);
+          var ifConditionExtra = ifCondition ? ("&&(" + ifCondition + ")") : "";
+          var hasElse = getAndRemoveAttr(el, 'v-else', true) != null;
+          var elseIfCondition = getAndRemoveAttr(el, 'v-else-if', true);
+          // 1. checkbox
+          var branch0 = cloneASTElement(el);
+          // process for on the main node
+          processFor(branch0);
+          addRawAttr(branch0, 'type', 'checkbox');
+          processElement(branch0, options);
+          branch0.processed = true; // prevent it from double-processed
+          branch0.if = "(" + typeBinding + ")==='checkbox'" + ifConditionExtra;
+          addIfCondition(branch0, {
+            exp: branch0.if,
+            block: branch0
+          });
+          // 2. add radio else-if condition
+          var branch1 = cloneASTElement(el);
+          getAndRemoveAttr(branch1, 'v-for', true);
+          addRawAttr(branch1, 'type', 'radio');
+          processElement(branch1, options);
+          addIfCondition(branch0, {
+            exp: "(" + typeBinding + ")==='radio'" + ifConditionExtra,
+            block: branch1
+          });
+          // 3. other
+          var branch2 = cloneASTElement(el);
+          getAndRemoveAttr(branch2, 'v-for', true);
+          addRawAttr(branch2, ':type', typeBinding);
+          processElement(branch2, options);
+          addIfCondition(branch0, {
+            exp: ifCondition,
+            block: branch2
+          });
+  
+          if (hasElse) {
+            branch0.else = true;
+          } else if (elseIfCondition) {
+            branch0.elseif = elseIfCondition;
+          }
+  
+          return branch0
+        }
+      }
+    }
+  
+    function cloneASTElement (el) {
+      return createASTElement(el.tag, el.attrsList.slice(), el.parent)
+    }
+  
+    var model$1 = {
+      preTransformNode: preTransformNode
+    };
+  
+    var modules$1 = [
+      klass$1,
+      style$1,
+      model$1
+    ];
+  
+    /*  */
+  
+    function text (el, dir) {
+      if (dir.value) {
+        addProp(el, 'textContent', ("_s(" + (dir.value) + ")"), dir);
+      }
+    }
+  
+    /*  */
+  
+    function html (el, dir) {
+      if (dir.value) {
+        addProp(el, 'innerHTML', ("_s(" + (dir.value) + ")"), dir);
+      }
+    }
+  
+    var directives$1 = {
+      model: model,
+      text: text,
+      html: html
+    };
+  
+    /*  */
+  
+    var baseOptions = {
+      expectHTML: true,
+      modules: modules$1,
+      directives: directives$1,
+      isPreTag: isPreTag,
+      isUnaryTag: isUnaryTag,
+      mustUseProp: mustUseProp,
+      canBeLeftOpenTag: canBeLeftOpenTag,
+      isReservedTag: isReservedTag,
+      getTagNamespace: getTagNamespace,
+      staticKeys: genStaticKeys(modules$1)
+    };
+  
+    /*  */
+  
+    var isStaticKey;
+    var isPlatformReservedTag;
+  
+    var genStaticKeysCached = cached(genStaticKeys$1);
+  
+    /**
+     * Goal of the optimizer: walk the generated template AST tree
+     * and detect sub-trees that are purely static, i.e. parts of
+     * the DOM that never needs to change.
+     *
+     * Once we detect these sub-trees, we can:
+     *
+     * 1. Hoist them into constants, so that we no longer need to
+     *    create fresh nodes for them on each re-render;
+     * 2. Completely skip them in the patching process.
+     */
+    function optimize (root, options) {
+      if (!root) { return }
+      isStaticKey = genStaticKeysCached(options.staticKeys || '');
+      isPlatformReservedTag = options.isReservedTag || no;
+      // first pass: mark all non-static nodes.
+      markStatic$1(root);
+      // second pass: mark static roots.
+      markStaticRoots(root, false);
+    }
+  
+    function genStaticKeys$1 (keys) {
+      return makeMap(
+        'type,tag,attrsList,attrsMap,plain,parent,children,attrs,start,end,rawAttrsMap' +
+        (keys ? ',' + keys : '')
+      )
+    }
+  
+    function markStatic$1 (node) {
+      node.static = isStatic(node);
+      if (node.type === 1) {
+        // do not make component slot content static. this avoids
+        // 1. components not able to mutate slot nodes
+        // 2. static slot content fails for hot-reloading
+        if (
+          !isPlatformReservedTag(node.tag) &&
+          node.tag !== 'slot' &&
+          node.attrsMap['inline-template'] == null
+        ) {
+          return
+        }
+        for (var i = 0, l = node.children.length; i < l; i++) {
+          var child = node.children[i];
+          markStatic$1(child);
+          if (!child.static) {
+            node.static = false;
+          }
+        }
+        if (node.ifConditions) {
+          for (var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
+            var block = node.ifConditions[i$1].block;
+            markStatic$1(block);
+            if (!block.static) {
+              node.static = false;
+            }
+          }
+        }
+      }
+    }
+  
+    function markStaticRoots (node, isInFor) {
+      if (node.type === 1) {
+        if (node.static || node.once) {
+          node.staticInFor = isInFor;
+        }
+        // For a node to qualify as a static root, it should have children that
+        // are not just static text. Otherwise the cost of hoisting out will
+        // outweigh the benefits and it's better off to just always render it fresh.
+        if (node.static && node.children.length && !(
+          node.children.length === 1 &&
+          node.children[0].type === 3
+        )) {
+          node.staticRoot = true;
+          return
+        } else {
+          node.staticRoot = false;
+        }
+        if (node.children) {
+          for (var i = 0, l = node.children.length; i < l; i++) {
+            markStaticRoots(node.children[i], isInFor || !!node.for);
+          }
+        }
+        if (node.ifConditions) {
+          for (var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
+            markStaticRoots(node.ifConditions[i$1].block, isInFor);
+          }
+        }
+      }
+    }
+  
+    function isStatic (node) {
+      if (node.type === 2) { // expression
+        return false
+      }
+      if (node.type === 3) { // text
+        return true
+      }
+      return !!(node.pre || (
+        !node.hasBindings && // no dynamic bindings
+        !node.if && !node.for && // not v-if or v-for or v-else
+        !isBuiltInTag(node.tag) && // not a built-in
+        isPlatformReservedTag(node.tag) && // not a component
+        !isDirectChildOfTemplateFor(node) &&
+        Object.keys(node).every(isStaticKey)
+      ))
+    }
+  
+    function isDirectChildOfTemplateFor (node) {
+      while (node.parent) {
+        node = node.parent;
+        if (node.tag !== 'template') {
+          return false
+        }
+        if (node.for) {
+          return true
+        }
+      }
+      return false
+    }
+  
+    /*  */
+  
+    var fnExpRE = /^([\w$_]+|\([^)]*?\))\s*=>|^function\s*(?:[\w$]+)?\s*\(/;
+    var fnInvokeRE = /\([^)]*?\);*$/;
+    var simplePathRE = /^[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['[^']*?']|\["[^"]*?"]|\[\d+]|\[[A-Za-z_$][\w$]*])*$/;
+  
+    // KeyboardEvent.keyCode aliases
+    var keyCodes = {
+      esc: 27,
+      tab: 9,
+      enter: 13,
+      space: 32,
+      up: 38,
+      left: 37,
+      right: 39,
+      down: 40,
+      'delete': [8, 46]
+    };
+  
+    // KeyboardEvent.key aliases
+    var keyNames = {
+      // #7880: IE11 and Edge use `Esc` for Escape key name.
+      esc: ['Esc', 'Escape'],
+      tab: 'Tab',
+      enter: 'Enter',
+      // #9112: IE11 uses `Spacebar` for Space key name.
+      space: [' ', 'Spacebar'],
+      // #7806: IE11 uses key names without `Arrow` prefix for arrow keys.
+      up: ['Up', 'ArrowUp'],
+      left: ['Left', 'ArrowLeft'],
+      right: ['Right', 'ArrowRight'],
+      down: ['Down', 'ArrowDown'],
+      // #9112: IE11 uses `Del` for Delete key name.
+      'delete': ['Backspace', 'Delete', 'Del']
+    };
+  
+    // #4868: modifiers that prevent the execution of the listener
+    // need to explicitly return null so that we can determine whether to remove
+    // the listener for .once
+    var genGuard = function (condition) { return ("if(" + condition + ")return null;"); };
+  
+    var modifierCode = {
+      stop: '$event.stopPropagation();',
+      prevent: '$event.preventDefault();',
+      self: genGuard("$event.target !== $event.currentTarget"),
+      ctrl: genGuard("!$event.ctrlKey"),
+      shift: genGuard("!$event.shiftKey"),
+      alt: genGuard("!$event.altKey"),
+      meta: genGuard("!$event.metaKey"),
+      left: genGuard("'button' in $event && $event.button !== 0"),
+      middle: genGuard("'button' in $event && $event.button !== 1"),
+      right: genGuard("'button' in $event && $event.button !== 2")
+    };
+  
+    function genHandlers (
+      events,
+      isNative
+    ) {
+      var prefix = isNative ? 'nativeOn:' : 'on:';
+      var staticHandlers = "";
+      var dynamicHandlers = "";
+      for (var name in events) {
+        var handlerCode = genHandler(events[name]);
+        if (events[name] && events[name].dynamic) {
+          dynamicHandlers += name + "," + handlerCode + ",";
+        } else {
+          staticHandlers += "\"" + name + "\":" + handlerCode + ",";
+        }
+      }
+      staticHandlers = "{" + (staticHandlers.slice(0, -1)) + "}";
+      if (dynamicHandlers) {
+        return prefix + "_d(" + staticHandlers + ",[" + (dynamicHandlers.slice(0, -1)) + "])"
+      } else {
+        return prefix + staticHandlers
+      }
+    }
+  
+    function genHandler (handler) {
+      if (!handler) {
+        return 'function(){}'
+      }
+  
+      if (Array.isArray(handler)) {
+        return ("[" + (handler.map(function (handler) { return genHandler(handler); }).join(',')) + "]")
+      }
+  
+      var isMethodPath = simplePathRE.test(handler.value);
+      var isFunctionExpression = fnExpRE.test(handler.value);
+      var isFunctionInvocation = simplePathRE.test(handler.value.replace(fnInvokeRE, ''));
+  
+      if (!handler.modifiers) {
+        if (isMethodPath || isFunctionExpression) {
+          return handler.value
+        }
+        return ("function($event){" + (isFunctionInvocation ? ("return " + (handler.value)) : handler.value) + "}") // inline statement
+      } else {
+        var code = '';
+        var genModifierCode = '';
+        var keys = [];
+        for (var key in handler.modifiers) {
+          if (modifierCode[key]) {
+            genModifierCode += modifierCode[key];
+            // left/right
+            if (keyCodes[key]) {
+              keys.push(key);
+            }
+          } else if (key === 'exact') {
+            var modifiers = (handler.modifiers);
+            genModifierCode += genGuard(
+              ['ctrl', 'shift', 'alt', 'meta']
+                .filter(function (keyModifier) { return !modifiers[keyModifier]; })
+                .map(function (keyModifier) { return ("$event." + keyModifier + "Key"); })
+                .join('||')
+            );
+          } else {
+            keys.push(key);
+          }
+        }
+        if (keys.length) {
+          code += genKeyFilter(keys);
+        }
+        // Make sure modifiers like prevent and stop get executed after key filtering
+        if (genModifierCode) {
+          code += genModifierCode;
+        }
+        var handlerCode = isMethodPath
+          ? ("return " + (handler.value) + "($event)")
+          : isFunctionExpression
+            ? ("return (" + (handler.value) + ")($event)")
+            : isFunctionInvocation
+              ? ("return " + (handler.value))
+              : handler.value;
+        return ("function($event){" + code + handlerCode + "}")
+      }
+    }
+  
+    function genKeyFilter (keys) {
+      return (
+        // make sure the key filters only apply to KeyboardEvents
+        // #9441: can't use 'keyCode' in $event because Chrome autofill fires fake
+        // key events that do not have keyCode property...
+        "if(!$event.type.indexOf('key')&&" +
+        (keys.map(genFilterCode).join('&&')) + ")return null;"
+      )
+    }
+  
+    function genFilterCode (key) {
+      var keyVal = parseInt(key, 10);
+      if (keyVal) {
+        return ("$event.keyCode!==" + keyVal)
+      }
+      var keyCode = keyCodes[key];
+      var keyName = keyNames[key];
+      return (
+        "_k($event.keyCode," +
+        (JSON.stringify(key)) + "," +
+        (JSON.stringify(keyCode)) + "," +
+        "$event.key," +
+        "" + (JSON.stringify(keyName)) +
+        ")"
+      )
+    }
+  
+    /*  */
+  
+    function on (el, dir) {
+      if (dir.modifiers) {
+        warn("v-on without argument does not support modifiers.");
+      }
+      el.wrapListeners = function (code) { return ("_g(" + code + "," + (dir.value) + ")"); };
+    }
+  
+    /*  */
+  
+    function bind$1 (el, dir) {
+      el.wrapData = function (code) {
+        return ("_b(" + code + ",'" + (el.tag) + "'," + (dir.value) + "," + (dir.modifiers && dir.modifiers.prop ? 'true' : 'false') + (dir.modifiers && dir.modifiers.sync ? ',true' : '') + ")")
+      };
+    }
+  
+    /*  */
+  
+    var baseDirectives = {
+      on: on,
+      bind: bind$1,
+      cloak: noop
+    };
+  
+    /*  */
+  
+  
+  
+  
+  
+    var CodegenState = function CodegenState (options) {
+      this.options = options;
+      this.warn = options.warn || baseWarn;
+      this.transforms = pluckModuleFunction(options.modules, 'transformCode');
+      this.dataGenFns = pluckModuleFunction(options.modules, 'genData');
+      this.directives = extend(extend({}, baseDirectives), options.directives);
+      var isReservedTag = options.isReservedTag || no;
+      this.maybeComponent = function (el) { return !!el.component || !isReservedTag(el.tag); };
+      this.onceId = 0;
+      this.staticRenderFns = [];
+      this.pre = false;
+    };
+  
+  
+  
+    function generate (
+      ast,
+      options
+    ) {
+      var state = new CodegenState(options);
+      var code = ast ? genElement(ast, state) : '_c("div")';
+      return {
+        render: ("with(this){return " + code + "}"),
+        staticRenderFns: state.staticRenderFns
+      }
+    }
+  
+    function genElement (el, state) {
+      if (el.parent) {
+        el.pre = el.pre || el.parent.pre;
+      }
+  
+      if (el.staticRoot && !el.staticProcessed) {
+        return genStatic(el, state)
+      } else if (el.once && !el.onceProcessed) {
+        return genOnce(el, state)
+      } else if (el.for && !el.forProcessed) {
+        return genFor(el, state)
+      } else if (el.if && !el.ifProcessed) {
+        return genIf(el, state)
+      } else if (el.tag === 'template' && !el.slotTarget && !state.pre) {
+        return genChildren(el, state) || 'void 0'
+      } else if (el.tag === 'slot') {
+        return genSlot(el, state)
+      } else {
+        // component or element
+        var code;
+        if (el.component) {
+          code = genComponent(el.component, el, state);
+        } else {
+          var data;
+          if (!el.plain || (el.pre && state.maybeComponent(el))) {
+            data = genData$2(el, state);
+          }
+  
+          var children = el.inlineTemplate ? null : genChildren(el, state, true);
+          code = "_c('" + (el.tag) + "'" + (data ? ("," + data) : '') + (children ? ("," + children) : '') + ")";
+        }
+        // module transforms
+        for (var i = 0; i < state.transforms.length; i++) {
+          code = state.transforms[i](el, code);
+        }
+        return code
+      }
+    }
+  
+    // hoist static sub-trees out
+    function genStatic (el, state) {
+      el.staticProcessed = true;
+      // Some elements (templates) need to behave differently inside of a v-pre
+      // node.  All pre nodes are static roots, so we can use this as a location to
+      // wrap a state change and reset it upon exiting the pre node.
+      var originalPreState = state.pre;
+      if (el.pre) {
+        state.pre = el.pre;
+      }
+      state.staticRenderFns.push(("with(this){return " + (genElement(el, state)) + "}"));
+      state.pre = originalPreState;
+      return ("_m(" + (state.staticRenderFns.length - 1) + (el.staticInFor ? ',true' : '') + ")")
+    }
+  
+    // v-once
+    function genOnce (el, state) {
+      el.onceProcessed = true;
+      if (el.if && !el.ifProcessed) {
+        return genIf(el, state)
+      } else if (el.staticInFor) {
+        var key = '';
+        var parent = el.parent;
+        while (parent) {
+          if (parent.for) {
+            key = parent.key;
+            break
+          }
+          parent = parent.parent;
+        }
+        if (!key) {
+          state.warn(
+            "v-once can only be used inside v-for that is keyed. ",
+            el.rawAttrsMap['v-once']
+          );
+          return genElement(el, state)
+        }
+        return ("_o(" + (genElement(el, state)) + "," + (state.onceId++) + "," + key + ")")
+      } else {
+        return genStatic(el, state)
+      }
+    }
+  
+    function genIf (
+      el,
+      state,
+      altGen,
+      altEmpty
+    ) {
+      el.ifProcessed = true; // avoid recursion
+      return genIfConditions(el.ifConditions.slice(), state, altGen, altEmpty)
+    }
+  
+    function genIfConditions (
+      conditions,
+      state,
+      altGen,
+      altEmpty
+    ) {
+      if (!conditions.length) {
+        return altEmpty || '_e()'
+      }
+  
+      var condition = conditions.shift();
+      if (condition.exp) {
+        return ("(" + (condition.exp) + ")?" + (genTernaryExp(condition.block)) + ":" + (genIfConditions(conditions, state, altGen, altEmpty)))
+      } else {
+        return ("" + (genTernaryExp(condition.block)))
+      }
+  
+      // v-if with v-once should generate code like (a)?_m(0):_m(1)
+      function genTernaryExp (el) {
+        return altGen
+          ? altGen(el, state)
+          : el.once
+            ? genOnce(el, state)
+            : genElement(el, state)
+      }
+    }
+  
+    function genFor (
+      el,
+      state,
+      altGen,
+      altHelper
+    ) {
+      var exp = el.for;
+      var alias = el.alias;
+      var iterator1 = el.iterator1 ? ("," + (el.iterator1)) : '';
+      var iterator2 = el.iterator2 ? ("," + (el.iterator2)) : '';
+  
+      if (state.maybeComponent(el) &&
+        el.tag !== 'slot' &&
+        el.tag !== 'template' &&
+        !el.key
+      ) {
+        state.warn(
+          "<" + (el.tag) + " v-for=\"" + alias + " in " + exp + "\">: component lists rendered with " +
+          "v-for should have explicit keys. " +
+          "See https://vuejs.org/guide/list.html#key for more info.",
+          el.rawAttrsMap['v-for'],
+          true /* tip */
+        );
+      }
+  
+      el.forProcessed = true; // avoid recursion
+      return (altHelper || '_l') + "((" + exp + ")," +
+        "function(" + alias + iterator1 + iterator2 + "){" +
+          "return " + ((altGen || genElement)(el, state)) +
+        '})'
+    }
+  
+    function genData$2 (el, state) {
+      var data = '{';
+  
+      // directives first.
+      // directives may mutate the el's other properties before they are generated.
+      var dirs = genDirectives(el, state);
+      if (dirs) { data += dirs + ','; }
+  
+      // key
+      if (el.key) {
+        data += "key:" + (el.key) + ",";
+      }
+      // ref
+      if (el.ref) {
+        data += "ref:" + (el.ref) + ",";
+      }
+      if (el.refInFor) {
+        data += "refInFor:true,";
+      }
+      // pre
+      if (el.pre) {
+        data += "pre:true,";
+      }
+      // record original tag name for components using "is" attribute
+      if (el.component) {
+        data += "tag:\"" + (el.tag) + "\",";
+      }
+      // module data generation functions
+      for (var i = 0; i < state.dataGenFns.length; i++) {
+        data += state.dataGenFns[i](el);
+      }
+      // attributes
+      if (el.attrs) {
+        data += "attrs:" + (genProps(el.attrs)) + ",";
+      }
+      // DOM props
+      if (el.props) {
+        data += "domProps:" + (genProps(el.props)) + ",";
+      }
+      // event handlers
+      if (el.events) {
+        data += (genHandlers(el.events, false)) + ",";
+      }
+      if (el.nativeEvents) {
+        data += (genHandlers(el.nativeEvents, true)) + ",";
+      }
+      // slot target
+      // only for non-scoped slots
+      if (el.slotTarget && !el.slotScope) {
+        data += "slot:" + (el.slotTarget) + ",";
+      }
+      // scoped slots
+      if (el.scopedSlots) {
+        data += (genScopedSlots(el, el.scopedSlots, state)) + ",";
+      }
+      // component v-model
+      if (el.model) {
+        data += "model:{value:" + (el.model.value) + ",callback:" + (el.model.callback) + ",expression:" + (el.model.expression) + "},";
+      }
+      // inline-template
+      if (el.inlineTemplate) {
+        var inlineTemplate = genInlineTemplate(el, state);
+        if (inlineTemplate) {
+          data += inlineTemplate + ",";
+        }
+      }
+      data = data.replace(/,$/, '') + '}';
+      // v-bind dynamic argument wrap
+      // v-bind with dynamic arguments must be applied using the same v-bind object
+      // merge helper so that class/style/mustUseProp attrs are handled correctly.
+      if (el.dynamicAttrs) {
+        data = "_b(" + data + ",\"" + (el.tag) + "\"," + (genProps(el.dynamicAttrs)) + ")";
+      }
+      // v-bind data wrap
+      if (el.wrapData) {
+        data = el.wrapData(data);
+      }
+      // v-on data wrap
+      if (el.wrapListeners) {
+        data = el.wrapListeners(data);
+      }
+      return data
+    }
+  
+    function genDirectives (el, state) {
+      var dirs = el.directives;
+      if (!dirs) { return }
+      var res = 'directives:[';
+      var hasRuntime = false;
+      var i, l, dir, needRuntime;
+      for (i = 0, l = dirs.length; i < l; i++) {
+        dir = dirs[i];
+        needRuntime = true;
+        var gen = state.directives[dir.name];
+        if (gen) {
+          // compile-time directive that manipulates AST.
+          // returns true if it also needs a runtime counterpart.
+          needRuntime = !!gen(el, dir, state.warn);
+        }
+        if (needRuntime) {
+          hasRuntime = true;
+          res += "{name:\"" + (dir.name) + "\",rawName:\"" + (dir.rawName) + "\"" + (dir.value ? (",value:(" + (dir.value) + "),expression:" + (JSON.stringify(dir.value))) : '') + (dir.arg ? (",arg:" + (dir.isDynamicArg ? dir.arg : ("\"" + (dir.arg) + "\""))) : '') + (dir.modifiers ? (",modifiers:" + (JSON.stringify(dir.modifiers))) : '') + "},";
+        }
+      }
+      if (hasRuntime) {
+        return res.slice(0, -1) + ']'
+      }
+    }
+  
+    function genInlineTemplate (el, state) {
+      var ast = el.children[0];
+      if (el.children.length !== 1 || ast.type !== 1) {
+        state.warn(
+          'Inline-template components must have exactly one child element.',
+          { start: el.start }
+        );
+      }
+      if (ast && ast.type === 1) {
+        var inlineRenderFns = generate(ast, state.options);
+        return ("inlineTemplate:{render:function(){" + (inlineRenderFns.render) + "},staticRenderFns:[" + (inlineRenderFns.staticRenderFns.map(function (code) { return ("function(){" + code + "}"); }).join(',')) + "]}")
+      }
+    }
+  
+    function genScopedSlots (
+      el,
+      slots,
+      state
+    ) {
+      // by default scoped slots are considered "stable", this allows child
+      // components with only scoped slots to skip forced updates from parent.
+      // but in some cases we have to bail-out of this optimization
+      // for example if the slot contains dynamic names, has v-if or v-for on them...
+      var needsForceUpdate = el.for || Object.keys(slots).some(function (key) {
+        var slot = slots[key];
+        return (
+          slot.slotTargetDynamic ||
+          slot.if ||
+          slot.for ||
+          containsSlotChild(slot) // is passing down slot from parent which may be dynamic
+        )
+      });
+  
+      // #9534: if a component with scoped slots is inside a conditional branch,
+      // it's possible for the same component to be reused but with different
+      // compiled slot content. To avoid that, we generate a unique key based on
+      // the generated code of all the slot contents.
+      var needsKey = !!el.if;
+  
+      // OR when it is inside another scoped slot or v-for (the reactivity may be
+      // disconnected due to the intermediate scope variable)
+      // #9438, #9506
+      // TODO: this can be further optimized by properly analyzing in-scope bindings
+      // and skip force updating ones that do not actually use scope variables.
+      if (!needsForceUpdate) {
+        var parent = el.parent;
+        while (parent) {
+          if (
+            (parent.slotScope && parent.slotScope !== emptySlotScopeToken) ||
+            parent.for
+          ) {
+            needsForceUpdate = true;
+            break
+          }
+          if (parent.if) {
+            needsKey = true;
+          }
+          parent = parent.parent;
+        }
+      }
+  
+      var generatedSlots = Object.keys(slots)
+        .map(function (key) { return genScopedSlot(slots[key], state); })
+        .join(',');
+  
+      return ("scopedSlots:_u([" + generatedSlots + "]" + (needsForceUpdate ? ",null,true" : "") + (!needsForceUpdate && needsKey ? (",null,false," + (hash(generatedSlots))) : "") + ")")
+    }
+  
+    function hash(str) {
+      var hash = 5381;
+      var i = str.length;
+      while(i) {
+        hash = (hash * 33) ^ str.charCodeAt(--i);
+      }
+      return hash >>> 0
+    }
+  
+    function containsSlotChild (el) {
+      if (el.type === 1) {
+        if (el.tag === 'slot') {
+          return true
+        }
+        return el.children.some(containsSlotChild)
+      }
+      return false
+    }
+  
+    function genScopedSlot (
+      el,
+      state
+    ) {
+      var isLegacySyntax = el.attrsMap['slot-scope'];
+      if (el.if && !el.ifProcessed && !isLegacySyntax) {
+        return genIf(el, state, genScopedSlot, "null")
+      }
+      if (el.for && !el.forProcessed) {
+        return genFor(el, state, genScopedSlot)
+      }
+      var slotScope = el.slotScope === emptySlotScopeToken
+        ? ""
+        : String(el.slotScope);
+      var fn = "function(" + slotScope + "){" +
+        "return " + (el.tag === 'template'
+          ? el.if && isLegacySyntax
+            ? ("(" + (el.if) + ")?" + (genChildren(el, state) || 'undefined') + ":undefined")
+            : genChildren(el, state) || 'undefined'
+          : genElement(el, state)) + "}";
+      // reverse proxy v-slot without scope on this.$slots
+      var reverseProxy = slotScope ? "" : ",proxy:true";
+      return ("{key:" + (el.slotTarget || "\"default\"") + ",fn:" + fn + reverseProxy + "}")
+    }
+  
+    function genChildren (
+      el,
+      state,
+      checkSkip,
+      altGenElement,
+      altGenNode
+    ) {
+      var children = el.children;
+      if (children.length) {
+        var el$1 = children[0];
+        // optimize single v-for
+        if (children.length === 1 &&
+          el$1.for &&
+          el$1.tag !== 'template' &&
+          el$1.tag !== 'slot'
+        ) {
+          var normalizationType = checkSkip
+            ? state.maybeComponent(el$1) ? ",1" : ",0"
+            : "";
+          return ("" + ((altGenElement || genElement)(el$1, state)) + normalizationType)
+        }
+        var normalizationType$1 = checkSkip
+          ? getNormalizationType(children, state.maybeComponent)
+          : 0;
+        var gen = altGenNode || genNode;
+        return ("[" + (children.map(function (c) { return gen(c, state); }).join(',')) + "]" + (normalizationType$1 ? ("," + normalizationType$1) : ''))
+      }
+    }
+  
+    // determine the normalization needed for the children array.
+    // 0: no normalization needed
+    // 1: simple normalization needed (possible 1-level deep nested array)
+    // 2: full normalization needed
+    function getNormalizationType (
+      children,
+      maybeComponent
+    ) {
+      var res = 0;
+      for (var i = 0; i < children.length; i++) {
+        var el = children[i];
+        if (el.type !== 1) {
+          continue
+        }
+        if (needsNormalization(el) ||
+            (el.ifConditions && el.ifConditions.some(function (c) { return needsNormalization(c.block); }))) {
+          res = 2;
+          break
+        }
+        if (maybeComponent(el) ||
+            (el.ifConditions && el.ifConditions.some(function (c) { return maybeComponent(c.block); }))) {
+          res = 1;
+        }
+      }
+      return res
+    }
+  
+    function needsNormalization (el) {
+      return el.for !== undefined || el.tag === 'template' || el.tag === 'slot'
+    }
+  
+    function genNode (node, state) {
+      if (node.type === 1) {
+        return genElement(node, state)
+      } else if (node.type === 3 && node.isComment) {
+        return genComment(node)
+      } else {
+        return genText(node)
+      }
+    }
+  
+    function genText (text) {
+      return ("_v(" + (text.type === 2
+        ? text.expression // no need for () because already wrapped in _s()
+        : transformSpecialNewlines(JSON.stringify(text.text))) + ")")
+    }
+  
+    function genComment (comment) {
+      return ("_e(" + (JSON.stringify(comment.text)) + ")")
+    }
+  
+    function genSlot (el, state) {
+      var slotName = el.slotName || '"default"';
+      var children = genChildren(el, state);
+      var res = "_t(" + slotName + (children ? ("," + children) : '');
+      var attrs = el.attrs || el.dynamicAttrs
+        ? genProps((el.attrs || []).concat(el.dynamicAttrs || []).map(function (attr) { return ({
+            // slot props are camelized
+            name: camelize(attr.name),
+            value: attr.value,
+            dynamic: attr.dynamic
+          }); }))
+        : null;
+      var bind$$1 = el.attrsMap['v-bind'];
+      if ((attrs || bind$$1) && !children) {
+        res += ",null";
+      }
+      if (attrs) {
+        res += "," + attrs;
+      }
+      if (bind$$1) {
+        res += (attrs ? '' : ',null') + "," + bind$$1;
+      }
+      return res + ')'
+    }
+  
+    // componentName is el.component, take it as argument to shun flow's pessimistic refinement
+    function genComponent (
+      componentName,
+      el,
+      state
+    ) {
+      var children = el.inlineTemplate ? null : genChildren(el, state, true);
+      return ("_c(" + componentName + "," + (genData$2(el, state)) + (children ? ("," + children) : '') + ")")
+    }
+  
+    function genProps (props) {
+      var staticProps = "";
+      var dynamicProps = "";
+      for (var i = 0; i < props.length; i++) {
+        var prop = props[i];
+        var value = transformSpecialNewlines(prop.value);
+        if (prop.dynamic) {
+          dynamicProps += (prop.name) + "," + value + ",";
+        } else {
+          staticProps += "\"" + (prop.name) + "\":" + value + ",";
+        }
+      }
+      staticProps = "{" + (staticProps.slice(0, -1)) + "}";
+      if (dynamicProps) {
+        return ("_d(" + staticProps + ",[" + (dynamicProps.slice(0, -1)) + "])")
+      } else {
+        return staticProps
+      }
+    }
+  
+    // #3895, #4268
+    function transformSpecialNewlines (text) {
+      return text
+        .replace(/\u2028/g, '\\u2028')
+        .replace(/\u2029/g, '\\u2029')
+    }
+  
+    /*  */
+  
+  
+  
+    // these keywords should not appear inside expressions, but operators like
+    // typeof, instanceof and in are allowed
+    var prohibitedKeywordRE = new RegExp('\\b' + (
+      'do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const,' +
+      'super,throw,while,yield,delete,export,import,return,switch,default,' +
+      'extends,finally,continue,debugger,function,arguments'
+    ).split(',').join('\\b|\\b') + '\\b');
+  
+    // these unary operators should not be used as property/method names
+    var unaryOperatorsRE = new RegExp('\\b' + (
+      'delete,typeof,void'
+    ).split(',').join('\\s*\\([^\\)]*\\)|\\b') + '\\s*\\([^\\)]*\\)');
+  
+    // strip strings in expressions
+    var stripStringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g;
+  
+    // detect problematic expressions in a template
+    function detectErrors (ast, warn) {
+      if (ast) {
+        checkNode(ast, warn);
+      }
+    }
+  
+    function checkNode (node, warn) {
+      if (node.type === 1) {
+        for (var name in node.attrsMap) {
+          if (dirRE.test(name)) {
+            var value = node.attrsMap[name];
+            if (value) {
+              var range = node.rawAttrsMap[name];
+              if (name === 'v-for') {
+                checkFor(node, ("v-for=\"" + value + "\""), warn, range);
+              } else if (onRE.test(name)) {
+                checkEvent(value, (name + "=\"" + value + "\""), warn, range);
+              } else {
+                checkExpression(value, (name + "=\"" + value + "\""), warn, range);
+              }
+            }
+          }
+        }
+        if (node.children) {
+          for (var i = 0; i < node.children.length; i++) {
+            checkNode(node.children[i], warn);
+          }
+        }
+      } else if (node.type === 2) {
+        checkExpression(node.expression, node.text, warn, node);
+      }
+    }
+  
+    function checkEvent (exp, text, warn, range) {
+      var stipped = exp.replace(stripStringRE, '');
+      var keywordMatch = stipped.match(unaryOperatorsRE);
+      if (keywordMatch && stipped.charAt(keywordMatch.index - 1) !== '$') {
+        warn(
+          "avoid using JavaScript unary operator as property name: " +
+          "\"" + (keywordMatch[0]) + "\" in expression " + (text.trim()),
+          range
+        );
+      }
+      checkExpression(exp, text, warn, range);
+    }
+  
+    function checkFor (node, text, warn, range) {
+      checkExpression(node.for || '', text, warn, range);
+      checkIdentifier(node.alias, 'v-for alias', text, warn, range);
+      checkIdentifier(node.iterator1, 'v-for iterator', text, warn, range);
+      checkIdentifier(node.iterator2, 'v-for iterator', text, warn, range);
+    }
+  
+    function checkIdentifier (
+      ident,
+      type,
+      text,
+      warn,
+      range
+    ) {
+      if (typeof ident === 'string') {
+        try {
+          new Function(("var " + ident + "=_"));
+        } catch (e) {
+          warn(("invalid " + type + " \"" + ident + "\" in expression: " + (text.trim())), range);
+        }
+      }
+    }
+  
+    function checkExpression (exp, text, warn, range) {
+      try {
+        new Function(("return " + exp));
+      } catch (e) {
+        var keywordMatch = exp.replace(stripStringRE, '').match(prohibitedKeywordRE);
+        if (keywordMatch) {
+          warn(
+            "avoid using JavaScript keyword as property name: " +
+            "\"" + (keywordMatch[0]) + "\"\n  Raw expression: " + (text.trim()),
+            range
+          );
+        } else {
+          warn(
+            "invalid expression: " + (e.message) + " in\n\n" +
+            "    " + exp + "\n\n" +
+            "  Raw expression: " + (text.trim()) + "\n",
+            range
+          );
+        }
+      }
+    }
+  
+    /*  */
+  
+    var range = 2;
+  
+    function generateCodeFrame (
+      source,
+      start,
+      end
+    ) {
+      if ( start === void 0 ) start = 0;
+      if ( end === void 0 ) end = source.length;
+  
+      var lines = source.split(/\r?\n/);
+      var count = 0;
+      var res = [];
+      for (var i = 0; i < lines.length; i++) {
+        count += lines[i].length + 1;
+        if (count >= start) {
+          for (var j = i - range; j <= i + range || end > count; j++) {
+            if (j < 0 || j >= lines.length) { continue }
+            res.push(("" + (j + 1) + (repeat$1(" ", 3 - String(j + 1).length)) + "|  " + (lines[j])));
+            var lineLength = lines[j].length;
+            if (j === i) {
+              // push underline
+              var pad = start - (count - lineLength) + 1;
+              var length = end > count ? lineLength - pad : end - start;
+              res.push("   |  " + repeat$1(" ", pad) + repeat$1("^", length));
+            } else if (j > i) {
+              if (end > count) {
+                var length$1 = Math.min(end - count, lineLength);
+                res.push("   |  " + repeat$1("^", length$1));
+              }
+              count += lineLength + 1;
+            }
+          }
+          break
+        }
+      }
+      return res.join('\n')
+    }
+  
+    function repeat$1 (str, n) {
+      var result = '';
+      if (n > 0) {
+        while (true) { // eslint-disable-line
+          if (n & 1) { result += str; }
+          n >>>= 1;
+          if (n <= 0) { break }
+          str += str;
+        }
+      }
+      return result
+    }
+  
+    /*  */
+  
+  
+  
+    function createFunction (code, errors) {
+      try {
+        return new Function(code)
+      } catch (err) {
+        errors.push({ err: err, code: code });
+        return noop
+      }
+    }
+  
+    function createCompileToFunctionFn (compile) {
+      var cache = Object.create(null);
+  
+      return function compileToFunctions (
+        template,
+        options,
+        vm
+      ) {
+        options = extend({}, options);
+        var warn$$1 = options.warn || warn;
+        delete options.warn;
+  
+        /* istanbul ignore if */
+        {
+          // detect possible CSP restriction
+          try {
+            new Function('return 1');
+          } catch (e) {
+            if (e.toString().match(/unsafe-eval|CSP/)) {
+              warn$$1(
+                'It seems you are using the standalone build of Vue.js in an ' +
+                'environment with Content Security Policy that prohibits unsafe-eval. ' +
+                'The template compiler cannot work in this environment. Consider ' +
+                'relaxing the policy to allow unsafe-eval or pre-compiling your ' +
+                'templates into render functions.'
+              );
+            }
+          }
+        }
+  
+        // check cache
+        var key = options.delimiters
+          ? String(options.delimiters) + template
+          : template;
+        if (cache[key]) {
+          return cache[key]
+        }
+  
+        // compile
+        var compiled = compile(template, options);
+  
+        // check compilation errors/tips
+        {
+          if (compiled.errors && compiled.errors.length) {
+            if (options.outputSourceRange) {
+              compiled.errors.forEach(function (e) {
+                warn$$1(
+                  "Error compiling template:\n\n" + (e.msg) + "\n\n" +
+                  generateCodeFrame(template, e.start, e.end),
+                  vm
+                );
+              });
+            } else {
+              warn$$1(
+                "Error compiling template:\n\n" + template + "\n\n" +
+                compiled.errors.map(function (e) { return ("- " + e); }).join('\n') + '\n',
+                vm
+              );
+            }
+          }
+          if (compiled.tips && compiled.tips.length) {
+            if (options.outputSourceRange) {
+              compiled.tips.forEach(function (e) { return tip(e.msg, vm); });
+            } else {
+              compiled.tips.forEach(function (msg) { return tip(msg, vm); });
+            }
+          }
+        }
+  
+        // turn code into functions
+        var res = {};
+        var fnGenErrors = [];
+        res.render = createFunction(compiled.render, fnGenErrors);
+        res.staticRenderFns = compiled.staticRenderFns.map(function (code) {
+          return createFunction(code, fnGenErrors)
+        });
+  
+        // check function generation errors.
+        // this should only happen if there is a bug in the compiler itself.
+        // mostly for codegen development use
+        /* istanbul ignore if */
+        {
+          if ((!compiled.errors || !compiled.errors.length) && fnGenErrors.length) {
+            warn$$1(
+              "Failed to generate render function:\n\n" +
+              fnGenErrors.map(function (ref) {
+                var err = ref.err;
+                var code = ref.code;
+  
+                return ((err.toString()) + " in\n\n" + code + "\n");
+            }).join('\n'),
+              vm
+            );
+          }
+        }
+  
+        return (cache[key] = res)
+      }
+    }
+  
+    /*  */
+  
+    function createCompilerCreator (baseCompile) {
+      return function createCompiler (baseOptions) {
+        function compile (
+          template,
+          options
+        ) {
+          var finalOptions = Object.create(baseOptions);
+          var errors = [];
+          var tips = [];
+  
+          var warn = function (msg, range, tip) {
+            (tip ? tips : errors).push(msg);
+          };
+  
+          if (options) {
+            if (options.outputSourceRange) {
+              // $flow-disable-line
+              var leadingSpaceLength = template.match(/^\s*/)[0].length;
+  
+              warn = function (msg, range, tip) {
+                var data = { msg: msg };
+                if (range) {
+                  if (range.start != null) {
+                    data.start = range.start + leadingSpaceLength;
+                  }
+                  if (range.end != null) {
+                    data.end = range.end + leadingSpaceLength;
+                  }
+                }
+                (tip ? tips : errors).push(data);
+              };
+            }
+            // merge custom modules
+            if (options.modules) {
+              finalOptions.modules =
+                (baseOptions.modules || []).concat(options.modules);
+            }
+            // merge custom directives
+            if (options.directives) {
+              finalOptions.directives = extend(
+                Object.create(baseOptions.directives || null),
+                options.directives
+              );
+            }
+            // copy other options
+            for (var key in options) {
+              if (key !== 'modules' && key !== 'directives') {
+                finalOptions[key] = options[key];
+              }
+            }
+          }
+  
+          finalOptions.warn = warn;
+  
+          var compiled = baseCompile(template.trim(), finalOptions);
+          {
+            detectErrors(compiled.ast, warn);
+          }
+          compiled.errors = errors;
+          compiled.tips = tips;
+          return compiled
+        }
+  
+        return {
+          compile: compile,
+          compileToFunctions: createCompileToFunctionFn(compile)
+        }
+      }
+    }
+  
+    /*  */
+  
+    // `createCompilerCreator` allows creating compilers that use alternative
+    // parser/optimizer/codegen, e.g the SSR optimizing compiler.
+    // Here we just export a default compiler using the default parts.
+    var createCompiler = createCompilerCreator(function baseCompile (
+      template,
+      options
+    ) {
+      var ast = parse(template.trim(), options);
+      if (options.optimize !== false) {
+        optimize(ast, options);
+      }
+      var code = generate(ast, options);
+      return {
+        ast: ast,
+        render: code.render,
+        staticRenderFns: code.staticRenderFns
+      }
+    });
+  
+    /*  */
+  
+    var ref$1 = createCompiler(baseOptions);
+    var compile = ref$1.compile;
+    var compileToFunctions = ref$1.compileToFunctions;
+  
+    /*  */
+  
+    // check whether current browser encodes a char inside attribute values
+    var div;
+    function getShouldDecode (href) {
+      div = div || document.createElement('div');
+      div.innerHTML = href ? "<a href=\"\n\"/>" : "<div a=\"\n\"/>";
+      return div.innerHTML.indexOf('&#10;') > 0
+    }
+  
+    // #3663: IE encodes newlines inside attribute values while other browsers don't
+    var shouldDecodeNewlines = inBrowser ? getShouldDecode(false) : false;
+    // #6828: chrome encodes content in a[href]
+    var shouldDecodeNewlinesForHref = inBrowser ? getShouldDecode(true) : false;
+  
+    /*  */
+  
+    var idToTemplate = cached(function (id) {
+      var el = query(id);
+      return el && el.innerHTML
+    });
+  
+    var mount = Vue.prototype.$mount;
+    Vue.prototype.$mount = function (
+      el,
+      hydrating
+    ) {
+      el = el && query(el);
+  
+      /* istanbul ignore if */
+      if (el === document.body || el === document.documentElement) {
+        warn(
+          "Do not mount Vue to <html> or <body> - mount to normal elements instead."
+        );
+        return this
+      }
+  
+      var options = this.$options;
+      // resolve template/el and convert to render function
+      if (!options.render) {
+        var template = options.template;
+        if (template) {
+          if (typeof template === 'string') {
+            if (template.charAt(0) === '#') {
+              template = idToTemplate(template);
+              /* istanbul ignore if */
+              if (!template) {
+                warn(
+                  ("Template element not found or is empty: " + (options.template)),
+                  this
+                );
+              }
+            }
+          } else if (template.nodeType) {
+            template = template.innerHTML;
+          } else {
+            {
+              warn('invalid template option:' + template, this);
+            }
+            return this
+          }
+        } else if (el) {
+          template = getOuterHTML(el);
+        }
+        if (template) {
+          /* istanbul ignore if */
+          if (config.performance && mark) {
+            mark('compile');
+          }
+  
+          var ref = compileToFunctions(template, {
+            outputSourceRange: "development" !== 'production',
+            shouldDecodeNewlines: shouldDecodeNewlines,
+            shouldDecodeNewlinesForHref: shouldDecodeNewlinesForHref,
+            delimiters: options.delimiters,
+            comments: options.comments
+          }, this);
+          var render = ref.render;
+          var staticRenderFns = ref.staticRenderFns;
+          options.render = render;
+          options.staticRenderFns = staticRenderFns;
+  
+          /* istanbul ignore if */
+          if (config.performance && mark) {
+            mark('compile end');
+            measure(("vue " + (this._name) + " compile"), 'compile', 'compile end');
+          }
+        }
+      }
+      return mount.call(this, el, hydrating)
+    };
+  
+    /**
+     * Get outerHTML of elements, taking care
+     * of SVG elements in IE as well.
+     */
+    function getOuterHTML (el) {
+      if (el.outerHTML) {
+        return el.outerHTML
+      } else {
+        var container = document.createElement('div');
+        container.appendChild(el.cloneNode(true));
+        return container.innerHTML
+      }
+    }
+  
+    Vue.compile = compileToFunctions;
+  
+    return Vue;
+  
+  }));
\ No newline at end of file