From ab79069dc79c4a816eb8d53cbd90fc38833ec117 Mon Sep 17 00:00:00 2001
From: Andrey Nering <andrey.nering@gmail.com>
Date: Mon, 8 May 2017 21:31:30 -0300
Subject: [PATCH] Improve dashboard repo search (#1652)

* Add VueJS

* Improve dashboard search

* Fix tab switching

* Fix input autofocus
---
 models/repo_list.go                     |    3 -
 public/js/index.js                      |   69 +-
 public/js/libs/vue.js                   | 8568 +++++++++++++++++++++++
 templates/base/footer.tmpl              |    1 +
 templates/base/head.tmpl                |    3 +
 templates/user/dashboard/dashboard.tmpl |   42 +-
 6 files changed, 8654 insertions(+), 32 deletions(-)
 create mode 100644 public/js/libs/vue.js

diff --git a/models/repo_list.go b/models/repo_list.go
index 0c27281f17..a2dae85c84 100644
--- a/models/repo_list.go
+++ b/models/repo_list.go
@@ -115,9 +115,6 @@ func SearchRepositoryByName(opts *SearchRepoOptions) (repos RepositoryList, coun
 		cond = builder.NewCond()
 	)
 
-	if len(opts.Keyword) == 0 {
-		return repos, 0, nil
-	}
 	opts.Keyword = strings.ToLower(opts.Keyword)
 
 	if opts.Page <= 0 {
diff --git a/public/js/index.js b/public/js/index.js
index 31b15a76a7..a3e9e99e7a 100644
--- a/public/js/index.js
+++ b/public/js/index.js
@@ -1560,6 +1560,7 @@ $(document).ready(function () {
     initWebhook();
     initAdmin();
     initCodeView();
+    initDashboardSearch();
 
     // Repo clone url.
     if ($('#repo-clone-url').length > 0) {
@@ -1635,13 +1636,6 @@ $(function () {
     if ($('.user.signin').length > 0) return;
     $('form').areYouSure();
 
-    $("#search_repo").on('change paste keyup',function(){
-        var value = $(this).val();
-        $.map($('.search-list li'), function(i) {
-            $(i).css("display", (value.trim().length == 0 || $(i).attr("data-title").trim().toLowerCase().indexOf(value.trim().toLowerCase()) > -1) ? "" : "none");
-        });
-    });
-
     // Parse SSH Key
     $("#ssh-key-content").on('change paste keyup',function(){
         var arrays = $(this).val().split(" ");
@@ -1651,3 +1645,64 @@ $(function () {
         }
     });
 });
+
+function initDashboardSearch() {
+    var el = document.getElementById('dashboard-repo-search');
+    if (!el) {
+        return;
+    }
+
+    new Vue({
+        delimiters: ['<%', '%>'],
+        el: el,
+
+        data: {
+            tab: 'repos',
+            repos: [],
+            searchQuery: '',
+            suburl: document.querySelector('meta[name=_suburl]').content,
+            uid: document.querySelector('meta[name=_uid]').content
+        },
+
+        mounted: function() {
+            this.searchRepos();
+
+            Vue.nextTick(function() {
+                document.querySelector('#search_repo').focus();
+            });
+        },
+
+        methods: {
+            changeTab: function(t) {
+                this.tab = t;
+            },
+
+            searchKeyUp: function() {
+                this.searchRepos();
+            },
+
+            searchRepos: function() {
+                var self = this;
+                $.getJSON(this.searchURL(), function(result) {
+                    self.repos = result.data;
+                });
+            },
+
+            searchURL: function() {
+                return this.suburl + '/api/v1/repos/search?uid=' + this.uid + '&q=' + this.searchQuery;
+            },
+
+            repoClass: function(repo) {
+                if (repo.fork) {
+                    return 'octicon octicon-repo-forked';
+                } else if (repo.mirror) {
+                    return 'octicon octicon-repo-clone';
+                } else if (repo.private) {
+                    return 'octicon octicon-repo-forked';
+                } else {
+                    return 'octicon octicon-repo';
+                }
+            }
+        }
+    });
+}
diff --git a/public/js/libs/vue.js b/public/js/libs/vue.js
new file mode 100644
index 0000000000..918e77919c
--- /dev/null
+++ b/public/js/libs/vue.js
@@ -0,0 +1,8568 @@
+/*!
+ * Vue.js v2.1.10
+ * (c) 2014-2017 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.Vue = factory());
+}(this, (function () { 'use strict';
+
+/*  */
+
+/**
+ * Convert a value to a string that is actually rendered.
+ */
+function _toString (val) {
+  return val == null
+    ? ''
+    : typeof val === 'object'
+      ? JSON.stringify(val, null, 2)
+      : String(val)
+}
+
+/**
+ * Convert a 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);
+
+/**
+ * Remove an item from an array
+ */
+function remove$1 (arr, item) {
+  if (arr.length) {
+    var index = arr.indexOf(item);
+    if (index > -1) {
+      return arr.splice(index, 1)
+    }
+  }
+}
+
+/**
+ * Check whether the object has the property.
+ */
+var hasOwnProperty = Object.prototype.hasOwnProperty;
+function hasOwn (obj, key) {
+  return hasOwnProperty.call(obj, key)
+}
+
+/**
+ * Check if value is primitive
+ */
+function isPrimitive (value) {
+  return typeof value === 'string' || typeof value === 'number'
+}
+
+/**
+ * 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 = /([^-])([A-Z])/g;
+var hyphenate = cached(function (str) {
+  return str
+    .replace(hyphenateRE, '$1-$2')
+    .replace(hyphenateRE, '$1-$2')
+    .toLowerCase()
+});
+
+/**
+ * Simple bind, faster than native
+ */
+function bind$1 (fn, ctx) {
+  function boundFn (a) {
+    var l = arguments.length;
+    return l
+      ? l > 1
+        ? fn.apply(ctx, arguments)
+        : fn.call(ctx, a)
+      : fn.call(ctx)
+  }
+  // record original fn length
+  boundFn._length = fn.length;
+  return boundFn
+}
+
+/**
+ * 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
+}
+
+/**
+ * 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'
+}
+
+/**
+ * Strict object type check. Only returns true
+ * for plain JavaScript objects.
+ */
+var toString = Object.prototype.toString;
+var OBJECT_STRING = '[object Object]';
+function isPlainObject (obj) {
+  return toString.call(obj) === OBJECT_STRING
+}
+
+/**
+ * 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
+}
+
+/**
+ * Perform no operation.
+ */
+function noop () {}
+
+/**
+ * Always return false.
+ */
+var no = function () { return false; };
+
+/**
+ * Return same value
+ */
+var identity = function (_) { return _; };
+
+/**
+ * Generate a static keys string 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) {
+  var isObjectA = isObject(a);
+  var isObjectB = isObject(b);
+  if (isObjectA && isObjectB) {
+    return JSON.stringify(a) === JSON.stringify(b)
+  } else if (!isObjectA && !isObjectB) {
+    return String(a) === String(b)
+  } else {
+    return false
+  }
+}
+
+function looseIndexOf (arr, val) {
+  for (var i = 0; i < arr.length; i++) {
+    if (looseEqual(arr[i], val)) { return i }
+  }
+  return -1
+}
+
+/*  */
+
+var config = {
+  /**
+   * Option merge strategies (used in core/util/options)
+   */
+  optionMergeStrategies: Object.create(null),
+
+  /**
+   * Whether to suppress warnings.
+   */
+  silent: false,
+
+  /**
+   * Whether to enable devtools
+   */
+  devtools: "development" !== 'production',
+
+  /**
+   * Error handler for watcher errors
+   */
+  errorHandler: null,
+
+  /**
+   * Ignore certain custom elements
+   */
+  ignoredElements: [],
+
+  /**
+   * Custom user key aliases for v-on
+   */
+  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 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,
+
+  /**
+   * List of asset types that a component can own.
+   */
+  _assetTypes: [
+    'component',
+    'directive',
+    'filter'
+  ],
+
+  /**
+   * List of lifecycle hooks.
+   */
+  _lifecycleHooks: [
+    'beforeCreate',
+    'created',
+    'beforeMount',
+    'mounted',
+    'beforeUpdate',
+    'updated',
+    'beforeDestroy',
+    'destroyed',
+    'activated',
+    'deactivated'
+  ],
+
+  /**
+   * Max circular updates allowed in a scheduler flush cycle.
+   */
+  _maxUpdateCount: 100
+};
+
+/*  */
+
+/**
+ * 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 = /[^\w.$]/;
+function parsePath (path) {
+  if (bailRE.test(path)) {
+    return
+  } else {
+    var segments = path.split('.');
+    return function (obj) {
+      for (var i = 0; i < segments.length; i++) {
+        if (!obj) { return }
+        obj = obj[segments[i]];
+      }
+      return obj
+    }
+  }
+}
+
+/*  */
+/* globals MutationObserver */
+
+// can we use __proto__?
+var hasProto = '__proto__' in {};
+
+// Browser environment sniffing
+var inBrowser = typeof window !== 'undefined';
+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;
+var isIOS = UA && /iphone|ipad|ipod|ios/.test(UA);
+
+// 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 && typeof global !== 'undefined') {
+      // detect presence of vue-server-renderer and avoid
+      // Webpack shimming the process
+      _isServer = 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 /native code/.test(Ctor.toString())
+}
+
+/**
+ * Defer a task to execute it asynchronously.
+ */
+var nextTick = (function () {
+  var callbacks = [];
+  var pending = false;
+  var timerFunc;
+
+  function nextTickHandler () {
+    pending = false;
+    var copies = callbacks.slice(0);
+    callbacks.length = 0;
+    for (var i = 0; i < copies.length; i++) {
+      copies[i]();
+    }
+  }
+
+  // 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 if */
+  if (typeof Promise !== 'undefined' && isNative(Promise)) {
+    var p = Promise.resolve();
+    var logError = function (err) { console.error(err); };
+    timerFunc = function () {
+      p.then(nextTickHandler).catch(logError);
+      // 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); }
+    };
+  } else if (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 IE11, iOS7, Android 4.4
+    var counter = 1;
+    var observer = new MutationObserver(nextTickHandler);
+    var textNode = document.createTextNode(String(counter));
+    observer.observe(textNode, {
+      characterData: true
+    });
+    timerFunc = function () {
+      counter = (counter + 1) % 2;
+      textNode.data = String(counter);
+    };
+  } else {
+    // fallback to setTimeout
+    /* istanbul ignore next */
+    timerFunc = function () {
+      setTimeout(nextTickHandler, 0);
+    };
+  }
+
+  return function queueNextTick (cb, ctx) {
+    var _resolve;
+    callbacks.push(function () {
+      if (cb) { cb.call(ctx); }
+      if (_resolve) { _resolve(ctx); }
+    });
+    if (!pending) {
+      pending = true;
+      timerFunc();
+    }
+    if (!cb && typeof Promise !== 'undefined') {
+      return new Promise(function (resolve) {
+        _resolve = resolve;
+      })
+    }
+  }
+})();
+
+var _Set;
+/* istanbul ignore if */
+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 = (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 formatComponentName;
+
+{
+  var hasConsole = typeof console !== 'undefined';
+
+  warn = function (msg, vm) {
+    if (hasConsole && (!config.silent)) {
+      console.error("[Vue warn]: " + msg + " " + (
+        vm ? formatLocation(formatComponentName(vm)) : ''
+      ));
+    }
+  };
+
+  formatComponentName = function (vm) {
+    if (vm.$root === vm) {
+      return 'root instance'
+    }
+    var name = vm._isVue
+      ? vm.$options.name || vm.$options._componentTag
+      : vm.name;
+    return (
+      (name ? ("component <" + name + ">") : "anonymous component") +
+      (vm._isVue && vm.$options.__file ? (" at " + (vm.$options.__file)) : '')
+    )
+  };
+
+  var formatLocation = function (str) {
+    if (str === 'anonymous component') {
+      str += " - use the \"name\" option for better debugging messages.";
+    }
+    return ("\n(found in " + str + ")")
+  };
+}
+
+/*  */
+
+
+var uid$1 = 0;
+
+/**
+ * A dep is an observable that can have multiple
+ * directives subscribing to it.
+ */
+var Dep = function Dep () {
+  this.id = uid$1++;
+  this.subs = [];
+};
+
+Dep.prototype.addSub = function addSub (sub) {
+  this.subs.push(sub);
+};
+
+Dep.prototype.removeSub = function removeSub (sub) {
+  remove$1(this.subs, sub);
+};
+
+Dep.prototype.depend = function depend () {
+  if (Dep.target) {
+    Dep.target.addDep(this);
+  }
+};
+
+Dep.prototype.notify = function notify () {
+  // stablize the subscriber list first
+  var subs = this.subs.slice();
+  for (var i = 0, l = subs.length; i < l; i++) {
+    subs[i].update();
+  }
+};
+
+// the current target watcher being evaluated.
+// this is globally unique because there could be only one
+// watcher being evaluated at any time.
+Dep.target = null;
+var targetStack = [];
+
+function pushTarget (_target) {
+  if (Dep.target) { targetStack.push(Dep.target); }
+  Dep.target = _target;
+}
+
+function popTarget () {
+  Dep.target = targetStack.pop();
+}
+
+/*
+ * 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);[
+  'push',
+  'pop',
+  'shift',
+  'unshift',
+  'splice',
+  'sort',
+  'reverse'
+]
+.forEach(function (method) {
+  // cache original method
+  var original = arrayProto[method];
+  def(arrayMethods, method, function mutator () {
+    var arguments$1 = arguments;
+
+    // avoid leaking arguments:
+    // http://jsperf.com/closure-with-arguments
+    var i = arguments.length;
+    var args = new Array(i);
+    while (i--) {
+      args[i] = arguments$1[i];
+    }
+    var result = original.apply(this, args);
+    var ob = this.__ob__;
+    var inserted;
+    switch (method) {
+      case 'push':
+        inserted = args;
+        break
+      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);
+
+/**
+ * By default, when a reactive property is set, the new value is
+ * also converted to become reactive. However when passing down props,
+ * we don't want to force conversion because the value may be a nested value
+ * under a frozen data structure. Converting it would defeat the optimization.
+ */
+var observerState = {
+  shouldConvert: true,
+  isSettingProps: false
+};
+
+/**
+ * Observer class that are attached to each observed
+ * object. Once attached, the observer converts target
+ * object's property keys into getter/setters that
+ * collect dependencies and dispatches updates.
+ */
+var Observer = function Observer (value) {
+  this.value = value;
+  this.dep = new Dep();
+  this.vmCount = 0;
+  def(value, '__ob__', this);
+  if (Array.isArray(value)) {
+    var augment = hasProto
+      ? protoAugment
+      : copyAugment;
+    augment(value, arrayMethods, arrayKeys);
+    this.observeArray(value);
+  } else {
+    this.walk(value);
+  }
+};
+
+/**
+ * Walk through each property 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$$1(obj, keys[i], obj[keys[i]]);
+  }
+};
+
+/**
+ * Observe a list of Array items.
+ */
+Observer.prototype.observeArray = function observeArray (items) {
+  for (var i = 0, l = items.length; i < l; i++) {
+    observe(items[i]);
+  }
+};
+
+// helpers
+
+/**
+ * Augment an target Object or Array by intercepting
+ * the prototype chain using __proto__
+ */
+function protoAugment (target, src) {
+  /* eslint-disable no-proto */
+  target.__proto__ = src;
+  /* eslint-enable no-proto */
+}
+
+/**
+ * Augment an target Object or Array by defining
+ * hidden properties.
+ */
+/* istanbul ignore next */
+function copyAugment (target, src, keys) {
+  for (var i = 0, l = keys.length; i < l; i++) {
+    var key = keys[i];
+    def(target, key, src[key]);
+  }
+}
+
+/**
+ * Attempt to create an observer instance for a value,
+ * returns the new observer if successfully observed,
+ * or the existing observer if the value already has one.
+ */
+function observe (value, asRootData) {
+  if (!isObject(value)) {
+    return
+  }
+  var ob;
+  if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {
+    ob = value.__ob__;
+  } else if (
+    observerState.shouldConvert &&
+    !isServerRendering() &&
+    (Array.isArray(value) || isPlainObject(value)) &&
+    Object.isExtensible(value) &&
+    !value._isVue
+  ) {
+    ob = new Observer(value);
+  }
+  if (asRootData && ob) {
+    ob.vmCount++;
+  }
+  return ob
+}
+
+/**
+ * Define a reactive property on an Object.
+ */
+function defineReactive$$1 (
+  obj,
+  key,
+  val,
+  customSetter
+) {
+  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;
+
+  var childOb = 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 ("development" !== 'production' && customSetter) {
+        customSetter();
+      }
+      if (setter) {
+        setter.call(obj, newVal);
+      } else {
+        val = newVal;
+      }
+      childOb = 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$1 (obj, key, val) {
+  if (Array.isArray(obj)) {
+    obj.length = Math.max(obj.length, key);
+    obj.splice(key, 1, val);
+    return val
+  }
+  if (hasOwn(obj, key)) {
+    obj[key] = val;
+    return
+  }
+  var ob = obj.__ob__;
+  if (obj._isVue || (ob && ob.vmCount)) {
+    "development" !== 'production' && warn(
+      'Avoid adding reactive properties to a Vue instance or its root $data ' +
+      'at runtime - declare it upfront in the data option.'
+    );
+    return
+  }
+  if (!ob) {
+    obj[key] = val;
+    return
+  }
+  defineReactive$$1(ob.value, key, val);
+  ob.dep.notify();
+  return val
+}
+
+/**
+ * Delete a property and trigger change if necessary.
+ */
+function del (obj, key) {
+  var ob = obj.__ob__;
+  if (obj._isVue || (ob && ob.vmCount)) {
+    "development" !== 'production' && warn(
+      'Avoid deleting properties on a Vue instance or its root $data ' +
+      '- just set it to null.'
+    );
+    return
+  }
+  if (!hasOwn(obj, key)) {
+    return
+  }
+  delete obj[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 = Object.keys(from);
+  for (var i = 0; i < keys.length; i++) {
+    key = keys[i];
+    toVal = to[key];
+    fromVal = from[key];
+    if (!hasOwn(to, key)) {
+      set$1(to, key, fromVal);
+    } else if (isPlainObject(toVal) && isPlainObject(fromVal)) {
+      mergeData(toVal, fromVal);
+    }
+  }
+  return to
+}
+
+/**
+ * Data
+ */
+strats.data = function (
+  parentVal,
+  childVal,
+  vm
+) {
+  if (!vm) {
+    // in a Vue.extend merge, both should be functions
+    if (!childVal) {
+      return parentVal
+    }
+    if (typeof childVal !== 'function') {
+      "development" !== 'production' && warn(
+        'The "data" option should be a function ' +
+        'that returns a per-instance value in component ' +
+        'definitions.',
+        vm
+      );
+      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(
+        childVal.call(this),
+        parentVal.call(this)
+      )
+    }
+  } else if (parentVal || childVal) {
+    return function mergedInstanceDataFn () {
+      // instance merge
+      var instanceData = typeof childVal === 'function'
+        ? childVal.call(vm)
+        : childVal;
+      var defaultData = typeof parentVal === 'function'
+        ? parentVal.call(vm)
+        : undefined;
+      if (instanceData) {
+        return mergeData(instanceData, defaultData)
+      } else {
+        return defaultData
+      }
+    }
+  }
+};
+
+/**
+ * Hooks and param attributes are merged as arrays.
+ */
+function mergeHook (
+  parentVal,
+  childVal
+) {
+  return childVal
+    ? parentVal
+      ? parentVal.concat(childVal)
+      : Array.isArray(childVal)
+        ? childVal
+        : [childVal]
+    : parentVal
+}
+
+config._lifecycleHooks.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) {
+  var res = Object.create(parentVal || null);
+  return childVal
+    ? extend(res, childVal)
+    : res
+}
+
+config._assetTypes.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) {
+  /* istanbul ignore if */
+  if (!childVal) { return parentVal }
+  if (!parentVal) { return childVal }
+  var ret = {};
+  extend(ret, parentVal);
+  for (var key in childVal) {
+    var parent = ret[key];
+    var child = childVal[key];
+    if (parent && !Array.isArray(parent)) {
+      parent = [parent];
+    }
+    ret[key] = parent
+      ? parent.concat(child)
+      : [child];
+  }
+  return ret
+};
+
+/**
+ * Other object hashes.
+ */
+strats.props =
+strats.methods =
+strats.computed = function (parentVal, childVal) {
+  if (!childVal) { return parentVal }
+  if (!parentVal) { return childVal }
+  var ret = Object.create(null);
+  extend(ret, parentVal);
+  extend(ret, childVal);
+  return ret
+};
+
+/**
+ * Default strategy.
+ */
+var defaultStrat = function (parentVal, childVal) {
+  return childVal === undefined
+    ? parentVal
+    : childVal
+};
+
+/**
+ * Validate component names
+ */
+function checkComponents (options) {
+  for (var key in options.components) {
+    var lower = key.toLowerCase();
+    if (isBuiltInTag(lower) || config.isReservedTag(lower)) {
+      warn(
+        'Do not use built-in or reserved HTML elements as component ' +
+        'id: ' + key
+      );
+    }
+  }
+}
+
+/**
+ * Ensure all props option syntax are normalized into the
+ * Object-based format.
+ */
+function normalizeProps (options) {
+  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 };
+    }
+  }
+  options.props = res;
+}
+
+/**
+ * Normalize raw function directives into object format.
+ */
+function normalizeDirectives (options) {
+  var dirs = options.directives;
+  if (dirs) {
+    for (var key in dirs) {
+      var def = dirs[key];
+      if (typeof def === 'function') {
+        dirs[key] = { bind: def, update: def };
+      }
+    }
+  }
+}
+
+/**
+ * Merge two option objects into a new one.
+ * Core utility used in both instantiation and inheritance.
+ */
+function mergeOptions (
+  parent,
+  child,
+  vm
+) {
+  {
+    checkComponents(child);
+  }
+  normalizeProps(child);
+  normalizeDirectives(child);
+  var extendsFrom = child.extends;
+  if (extendsFrom) {
+    parent = typeof extendsFrom === 'function'
+      ? mergeOptions(parent, extendsFrom.options, vm)
+      : mergeOptions(parent, extendsFrom, vm);
+  }
+  if (child.mixins) {
+    for (var i = 0, l = child.mixins.length; i < l; i++) {
+      var mixin = child.mixins[i];
+      if (mixin.prototype instanceof Vue$3) {
+        mixin = mixin.options;
+      }
+      parent = mergeOptions(parent, mixin, 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 ("development" !== 'production' && 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];
+  // handle boolean props
+  if (isType(Boolean, prop.type)) {
+    if (absent && !hasOwn(prop, 'default')) {
+      value = false;
+    } else if (!isType(String, prop.type) && (value === '' || value === hyphenate(key))) {
+      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 prevShouldConvert = observerState.shouldConvert;
+    observerState.shouldConvert = true;
+    observe(value);
+    observerState.shouldConvert = prevShouldConvert;
+  }
+  {
+    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)) {
+    "development" !== 'production' && 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[key] !== undefined) {
+    return vm[key]
+  }
+  // call factory function for non-Function types
+  return typeof def === 'function' && 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(
+      'Invalid prop: type check failed for prop "' + name + '".' +
+      ' Expected ' + expectedTypes.map(capitalize).join(', ') +
+      ', got ' + Object.prototype.toString.call(value).slice(8, -1) + '.',
+      vm
+    );
+    return
+  }
+  var validator = prop.validator;
+  if (validator) {
+    if (!validator(value)) {
+      warn(
+        'Invalid prop: custom validator check failed for prop "' + name + '".',
+        vm
+      );
+    }
+  }
+}
+
+/**
+ * Assert the type of a value
+ */
+function assertType (value, type) {
+  var valid;
+  var expectedType = getType(type);
+  if (expectedType === 'String') {
+    valid = typeof value === (expectedType = 'string');
+  } else if (expectedType === 'Number') {
+    valid = typeof value === (expectedType = 'number');
+  } else if (expectedType === 'Boolean') {
+    valid = typeof value === (expectedType = 'boolean');
+  } else if (expectedType === 'Function') {
+    valid = typeof value === (expectedType = 'function');
+  } 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 isType (type, fn) {
+  if (!Array.isArray(fn)) {
+    return getType(fn) === getType(type)
+  }
+  for (var i = 0, len = fn.length; i < len; i++) {
+    if (getType(fn[i]) === getType(type)) {
+      return true
+    }
+  }
+  /* istanbul ignore next */
+  return false
+}
+
+
+
+var util = Object.freeze({
+	defineReactive: defineReactive$$1,
+	_toString: _toString,
+	toNumber: toNumber,
+	makeMap: makeMap,
+	isBuiltInTag: isBuiltInTag,
+	remove: remove$1,
+	hasOwn: hasOwn,
+	isPrimitive: isPrimitive,
+	cached: cached,
+	camelize: camelize,
+	capitalize: capitalize,
+	hyphenate: hyphenate,
+	bind: bind$1,
+	toArray: toArray,
+	extend: extend,
+	isObject: isObject,
+	isPlainObject: isPlainObject,
+	toObject: toObject,
+	noop: noop,
+	no: no,
+	identity: identity,
+	genStaticKeys: genStaticKeys,
+	looseEqual: looseEqual,
+	looseIndexOf: looseIndexOf,
+	isReserved: isReserved,
+	def: def,
+	parsePath: parsePath,
+	hasProto: hasProto,
+	inBrowser: inBrowser,
+	UA: UA,
+	isIE: isIE,
+	isIE9: isIE9,
+	isEdge: isEdge,
+	isAndroid: isAndroid,
+	isIOS: isIOS,
+	isServerRendering: isServerRendering,
+	devtools: devtools,
+	nextTick: nextTick,
+	get _Set () { return _Set; },
+	mergeOptions: mergeOptions,
+	resolveAsset: resolveAsset,
+	get warn () { return warn; },
+	get formatComponentName () { return formatComponentName; },
+	validateProp: validateProp
+});
+
+/* 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 to declare reactive data " +
+      "properties in the data option.",
+      target
+    );
+  };
+
+  var hasProxy =
+    typeof Proxy !== 'undefined' &&
+    Proxy.toString().match(/native code/);
+
+  if (hasProxy) {
+    var isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta');
+    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) || key.charAt(0) === '_';
+      if (!has && !isAllowed) {
+        warnNonPresent(target, key);
+      }
+      return has || !isAllowed
+    }
+  };
+
+  var getHandler = {
+    get: function get (target, key) {
+      if (typeof key === 'string' && !(key in target)) {
+        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 VNode = function VNode (
+  tag,
+  data,
+  children,
+  text,
+  elm,
+  context,
+  componentOptions
+) {
+  this.tag = tag;
+  this.data = data;
+  this.children = children;
+  this.text = text;
+  this.elm = elm;
+  this.ns = undefined;
+  this.context = context;
+  this.functionalContext = 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;
+};
+
+var prototypeAccessors = { child: {} };
+
+// 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 () {
+  var node = new VNode();
+  node.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,
+    vnode.children,
+    vnode.text,
+    vnode.elm,
+    vnode.context,
+    vnode.componentOptions
+  );
+  cloned.ns = vnode.ns;
+  cloned.isStatic = vnode.isStatic;
+  cloned.key = vnode.key;
+  cloned.isCloned = true;
+  return cloned
+}
+
+function cloneVNodes (vnodes) {
+  var res = new Array(vnodes.length);
+  for (var i = 0; i < vnodes.length; i++) {
+    res[i] = cloneVNode(vnodes[i]);
+  }
+  return res
+}
+
+/*  */
+
+var hooks = { init: init, prepatch: prepatch, insert: insert, destroy: destroy$1 };
+var hooksToMerge = Object.keys(hooks);
+
+function createComponent (
+  Ctor,
+  data,
+  context,
+  children,
+  tag
+) {
+  if (!Ctor) {
+    return
+  }
+
+  var baseCtor = context.$options._base;
+  if (isObject(Ctor)) {
+    Ctor = baseCtor.extend(Ctor);
+  }
+
+  if (typeof Ctor !== 'function') {
+    {
+      warn(("Invalid Component definition: " + (String(Ctor))), context);
+    }
+    return
+  }
+
+  // async component
+  if (!Ctor.cid) {
+    if (Ctor.resolved) {
+      Ctor = Ctor.resolved;
+    } else {
+      Ctor = resolveAsyncComponent(Ctor, baseCtor, function () {
+        // it's ok to queue this on every render because
+        // $forceUpdate is buffered by the scheduler.
+        context.$forceUpdate();
+      });
+      if (!Ctor) {
+        // return nothing if this is indeed an async component
+        // wait for the callback to trigger parent update.
+        return
+      }
+    }
+  }
+
+  // resolve constructor options in case global mixins are applied after
+  // component constructor creation
+  resolveConstructorOptions(Ctor);
+
+  data = data || {};
+
+  // extract props
+  var propsData = extractProps(data, Ctor);
+
+  // functional component
+  if (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
+  data.on = data.nativeOn;
+
+  if (Ctor.options.abstract) {
+    // abstract components do not keep anything
+    // other than props & listeners
+    data = {};
+  }
+
+  // merge component management hooks onto the placeholder node
+  mergeHooks(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 }
+  );
+  return vnode
+}
+
+function createFunctionalComponent (
+  Ctor,
+  propsData,
+  data,
+  context,
+  children
+) {
+  var props = {};
+  var propOptions = Ctor.options.props;
+  if (propOptions) {
+    for (var key in propOptions) {
+      props[key] = validateProp(key, propOptions, propsData);
+    }
+  }
+  // ensure the createElement function in functional components
+  // gets a unique context - this is necessary for correct named slot check
+  var _context = Object.create(context);
+  var h = function (a, b, c, d) { return createElement(_context, a, b, c, d, true); };
+  var vnode = Ctor.options.render.call(null, h, {
+    props: props,
+    data: data,
+    parent: context,
+    children: children,
+    slots: function () { return resolveSlots(children, context); }
+  });
+  if (vnode instanceof VNode) {
+    vnode.functionalContext = context;
+    if (data.slot) {
+      (vnode.data || (vnode.data = {})).slot = data.slot;
+    }
+  }
+  return vnode
+}
+
+function createComponentInstanceForVnode (
+  vnode, // we know it's MountedComponentVNode but flow doesn't
+  parent, // activeInstance in lifecycle state
+  parentElm,
+  refElm
+) {
+  var vnodeComponentOptions = vnode.componentOptions;
+  var options = {
+    _isComponent: true,
+    parent: parent,
+    propsData: vnodeComponentOptions.propsData,
+    _componentTag: vnodeComponentOptions.tag,
+    _parentVnode: vnode,
+    _parentListeners: vnodeComponentOptions.listeners,
+    _renderChildren: vnodeComponentOptions.children,
+    _parentElm: parentElm || null,
+    _refElm: refElm || null
+  };
+  // check inline-template render functions
+  var inlineTemplate = vnode.data.inlineTemplate;
+  if (inlineTemplate) {
+    options.render = inlineTemplate.render;
+    options.staticRenderFns = inlineTemplate.staticRenderFns;
+  }
+  return new vnodeComponentOptions.Ctor(options)
+}
+
+function init (
+  vnode,
+  hydrating,
+  parentElm,
+  refElm
+) {
+  if (!vnode.componentInstance || vnode.componentInstance._isDestroyed) {
+    var child = vnode.componentInstance = createComponentInstanceForVnode(
+      vnode,
+      activeInstance,
+      parentElm,
+      refElm
+    );
+    child.$mount(hydrating ? vnode.elm : undefined, hydrating);
+  } else if (vnode.data.keepAlive) {
+    // kept-alive components, treat as a patch
+    var mountedNode = vnode; // work around flow
+    prepatch(mountedNode, mountedNode);
+  }
+}
+
+function prepatch (
+  oldVnode,
+  vnode
+) {
+  var options = vnode.componentOptions;
+  var child = vnode.componentInstance = oldVnode.componentInstance;
+  child._updateFromParent(
+    options.propsData, // updated props
+    options.listeners, // updated listeners
+    vnode, // new parent vnode
+    options.children // new children
+  );
+}
+
+function insert (vnode) {
+  if (!vnode.componentInstance._isMounted) {
+    vnode.componentInstance._isMounted = true;
+    callHook(vnode.componentInstance, 'mounted');
+  }
+  if (vnode.data.keepAlive) {
+    vnode.componentInstance._inactive = false;
+    callHook(vnode.componentInstance, 'activated');
+  }
+}
+
+function destroy$1 (vnode) {
+  if (!vnode.componentInstance._isDestroyed) {
+    if (!vnode.data.keepAlive) {
+      vnode.componentInstance.$destroy();
+    } else {
+      vnode.componentInstance._inactive = true;
+      callHook(vnode.componentInstance, 'deactivated');
+    }
+  }
+}
+
+function resolveAsyncComponent (
+  factory,
+  baseCtor,
+  cb
+) {
+  if (factory.requested) {
+    // pool callbacks
+    factory.pendingCallbacks.push(cb);
+  } else {
+    factory.requested = true;
+    var cbs = factory.pendingCallbacks = [cb];
+    var sync = true;
+
+    var resolve = function (res) {
+      if (isObject(res)) {
+        res = baseCtor.extend(res);
+      }
+      // cache resolved
+      factory.resolved = res;
+      // invoke callbacks only if this is not a synchronous resolve
+      // (async resolves are shimmed as synchronous during SSR)
+      if (!sync) {
+        for (var i = 0, l = cbs.length; i < l; i++) {
+          cbs[i](res);
+        }
+      }
+    };
+
+    var reject = function (reason) {
+      "development" !== 'production' && warn(
+        "Failed to resolve async component: " + (String(factory)) +
+        (reason ? ("\nReason: " + reason) : '')
+      );
+    };
+
+    var res = factory(resolve, reject);
+
+    // handle promise
+    if (res && typeof res.then === 'function' && !factory.resolved) {
+      res.then(resolve, reject);
+    }
+
+    sync = false;
+    // return in case resolved synchronously
+    return factory.resolved
+  }
+}
+
+function extractProps (data, Ctor) {
+  // we are only extracting raw values here.
+  // validation and default values are handled in the child
+  // component itself.
+  var propOptions = Ctor.options.props;
+  if (!propOptions) {
+    return
+  }
+  var res = {};
+  var attrs = data.attrs;
+  var props = data.props;
+  var domProps = data.domProps;
+  if (attrs || props || domProps) {
+    for (var key in propOptions) {
+      var altKey = hyphenate(key);
+      checkProp(res, props, key, altKey, true) ||
+      checkProp(res, attrs, key, altKey) ||
+      checkProp(res, domProps, key, altKey);
+    }
+  }
+  return res
+}
+
+function checkProp (
+  res,
+  hash,
+  key,
+  altKey,
+  preserve
+) {
+  if (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
+}
+
+function mergeHooks (data) {
+  if (!data.hook) {
+    data.hook = {};
+  }
+  for (var i = 0; i < hooksToMerge.length; i++) {
+    var key = hooksToMerge[i];
+    var fromParent = data.hook[key];
+    var ours = hooks[key];
+    data.hook[key] = fromParent ? mergeHook$1(ours, fromParent) : ours;
+  }
+}
+
+function mergeHook$1 (one, two) {
+  return function (a, b, c, d) {
+    one(a, b, c, d);
+    two(a, b, c, d);
+  }
+}
+
+/*  */
+
+function mergeVNodeHook (def, hookKey, hook, key) {
+  key = key + hookKey;
+  var injectedHash = def.__injected || (def.__injected = {});
+  if (!injectedHash[key]) {
+    injectedHash[key] = true;
+    var oldHook = def[hookKey];
+    if (oldHook) {
+      def[hookKey] = function () {
+        oldHook.apply(this, arguments);
+        hook.apply(this, arguments);
+      };
+    } else {
+      def[hookKey] = hook;
+    }
+  }
+}
+
+/*  */
+
+var normalizeEvent = cached(function (name) {
+  var once = name.charAt(0) === '~'; // Prefixed last, checked first
+  name = once ? name.slice(1) : name;
+  var capture = name.charAt(0) === '!';
+  name = capture ? name.slice(1) : name;
+  return {
+    name: name,
+    once: once,
+    capture: capture
+  }
+});
+
+function createEventHandle (fn) {
+  var handle = {
+    fn: fn,
+    invoker: function () {
+      var arguments$1 = arguments;
+
+      var fn = handle.fn;
+      if (Array.isArray(fn)) {
+        for (var i = 0; i < fn.length; i++) {
+          fn[i].apply(null, arguments$1);
+        }
+      } else {
+        fn.apply(null, arguments);
+      }
+    }
+  };
+  return handle
+}
+
+function updateListeners (
+  on,
+  oldOn,
+  add,
+  remove$$1,
+  vm
+) {
+  var name, cur, old, event;
+  for (name in on) {
+    cur = on[name];
+    old = oldOn[name];
+    event = normalizeEvent(name);
+    if (!cur) {
+      "development" !== 'production' && warn(
+        "Invalid handler for event \"" + (event.name) + "\": got " + String(cur),
+        vm
+      );
+    } else if (!old) {
+      if (!cur.invoker) {
+        cur = on[name] = createEventHandle(cur);
+      }
+      add(event.name, cur.invoker, event.once, event.capture);
+    } else if (cur !== old) {
+      old.fn = cur;
+      on[name] = old;
+    }
+  }
+  for (name in oldOn) {
+    if (!on[name]) {
+      event = normalizeEvent(name);
+      remove$$1(event.name, oldOn[name].invoker, event.capture);
+    }
+  }
+}
+
+/*  */
+
+// 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
+// nomralization 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 constrcuts 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 normalizeArrayChildren (children, nestedIndex) {
+  var res = [];
+  var i, c, last;
+  for (i = 0; i < children.length; i++) {
+    c = children[i];
+    if (c == null || typeof c === 'boolean') { continue }
+    last = res[res.length - 1];
+    //  nested
+    if (Array.isArray(c)) {
+      res.push.apply(res, normalizeArrayChildren(c, ((nestedIndex || '') + "_" + i)));
+    } else if (isPrimitive(c)) {
+      if (last && last.text) {
+        last.text += String(c);
+      } else if (c !== '') {
+        // convert primitive to vnode
+        res.push(createTextVNode(c));
+      }
+    } else {
+      if (c.text && last && last.text) {
+        res[res.length - 1] = createTextVNode(last.text + c.text);
+      } else {
+        // default key for nested array children (likely generated by v-for)
+        if (c.tag && c.key == null && nestedIndex != null) {
+          c.key = "__vlist" + nestedIndex + "_" + i + "__";
+        }
+        res.push(c);
+      }
+    }
+  }
+  return res
+}
+
+/*  */
+
+function getFirstComponentChild (children) {
+  return children && children.filter(function (c) { return c && c.componentOptions; })[0]
+}
+
+/*  */
+
+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 (alwaysNormalize) { normalizationType = ALWAYS_NORMALIZE; }
+  return _createElement(context, tag, data, children, normalizationType)
+}
+
+function _createElement (
+  context,
+  tag,
+  data,
+  children,
+  normalizationType
+) {
+  if (data && data.__ob__) {
+    "development" !== 'production' && 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()
+  }
+  if (!tag) {
+    // in case of component :is set to falsy value
+    return createEmptyVNode()
+  }
+  // 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 = config.getTagNamespace(tag);
+    if (config.isReservedTag(tag)) {
+      // platform built-in elements
+      vnode = new VNode(
+        config.parsePlatformTagName(tag), data, children,
+        undefined, undefined, context
+      );
+    } else if ((Ctor = resolveAsset(context.$options, 'components', tag))) {
+      // component
+      vnode = createComponent(Ctor, data, context, children, tag);
+    } else {
+      // unknown or unlisted namespaced elements
+      // check at runtime because it may get assigned a namespace when its
+      // parent normalizes children
+      vnode = new VNode(
+        tag, data, children,
+        undefined, undefined, context
+      );
+    }
+  } else {
+    // direct component options / constructor
+    vnode = createComponent(tag, data, context, children);
+  }
+  if (vnode) {
+    if (ns) { applyNS(vnode, ns); }
+    return vnode
+  } else {
+    return createEmptyVNode()
+  }
+}
+
+function applyNS (vnode, ns) {
+  vnode.ns = ns;
+  if (vnode.tag === 'foreignObject') {
+    // use default namespace inside foreignObject
+    return
+  }
+  if (vnode.children) {
+    for (var i = 0, l = vnode.children.length; i < l; i++) {
+      var child = vnode.children[i];
+      if (child.tag && !child.ns) {
+        applyNS(child, ns);
+      }
+    }
+  }
+}
+
+/*  */
+
+function initRender (vm) {
+  vm.$vnode = null; // the placeholder node in parent tree
+  vm._vnode = null; // the root of the child tree
+  vm._staticTrees = null;
+  var parentVnode = vm.$options._parentVnode;
+  var renderContext = parentVnode && parentVnode.context;
+  vm.$slots = resolveSlots(vm.$options._renderChildren, renderContext);
+  vm.$scopedSlots = {};
+  // 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.$createElement = function (a, b, c, d) { return createElement(vm, a, b, c, d, true); };
+}
+
+function renderMixin (Vue) {
+  Vue.prototype.$nextTick = function (fn) {
+    return nextTick(fn, this)
+  };
+
+  Vue.prototype._render = function () {
+    var vm = this;
+    var ref = vm.$options;
+    var render = ref.render;
+    var staticRenderFns = ref.staticRenderFns;
+    var _parentVnode = ref._parentVnode;
+
+    if (vm._isMounted) {
+      // clone slot nodes on re-renders
+      for (var key in vm.$slots) {
+        vm.$slots[key] = cloneVNodes(vm.$slots[key]);
+      }
+    }
+
+    if (_parentVnode && _parentVnode.data.scopedSlots) {
+      vm.$scopedSlots = _parentVnode.data.scopedSlots;
+    }
+
+    if (staticRenderFns && !vm._staticTrees) {
+      vm._staticTrees = [];
+    }
+    // set parent vnode. this allows render functions to have access
+    // to the data on the placeholder node.
+    vm.$vnode = _parentVnode;
+    // render self
+    var vnode;
+    try {
+      vnode = render.call(vm._renderProxy, vm.$createElement);
+    } catch (e) {
+      /* istanbul ignore else */
+      if (config.errorHandler) {
+        config.errorHandler.call(null, e, vm);
+      } else {
+        {
+          warn(("Error when rendering " + (formatComponentName(vm)) + ":"));
+        }
+        throw e
+      }
+      // return previous vnode to prevent render error causing blank component
+      vnode = vm._vnode;
+    }
+    // return empty vnode in case the render function errored out
+    if (!(vnode instanceof VNode)) {
+      if ("development" !== 'production' && Array.isArray(vnode)) {
+        warn(
+          'Multiple root nodes returned from render function. Render function ' +
+          'should return a single root node.',
+          vm
+        );
+      }
+      vnode = createEmptyVNode();
+    }
+    // set parent
+    vnode.parent = _parentVnode;
+    return vnode
+  };
+
+  // toString for mustaches
+  Vue.prototype._s = _toString;
+  // convert text to vnode
+  Vue.prototype._v = createTextVNode;
+  // number conversion
+  Vue.prototype._n = toNumber;
+  // empty vnode
+  Vue.prototype._e = createEmptyVNode;
+  // loose equal
+  Vue.prototype._q = looseEqual;
+  // loose indexOf
+  Vue.prototype._i = looseIndexOf;
+
+  // render static tree by index
+  Vue.prototype._m = function renderStatic (
+    index,
+    isInFor
+  ) {
+    var tree = this._staticTrees[index];
+    // if has already-rendered static tree and not inside v-for,
+    // we can reuse the same tree by doing a shallow clone.
+    if (tree && !isInFor) {
+      return Array.isArray(tree)
+        ? cloneVNodes(tree)
+        : cloneVNode(tree)
+    }
+    // otherwise, render a fresh tree.
+    tree = this._staticTrees[index] = this.$options.staticRenderFns[index].call(this._renderProxy);
+    markStatic(tree, ("__static__" + index), false);
+    return tree
+  };
+
+  // mark node as static (v-once)
+  Vue.prototype._o = 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;
+  }
+
+  // filter resolution helper
+  Vue.prototype._f = function resolveFilter (id) {
+    return resolveAsset(this.$options, 'filters', id, true) || identity
+  };
+
+  // render v-for
+  Vue.prototype._l = function renderList (
+    val,
+    render
+  ) {
+    var ret, i, l, keys, key;
+    if (Array.isArray(val) || typeof val === 'string') {
+      ret = new Array(val.length);
+      for (i = 0, l = val.length; i < l; i++) {
+        ret[i] = render(val[i], i);
+      }
+    } else if (typeof val === 'number') {
+      ret = new Array(val);
+      for (i = 0; i < val; i++) {
+        ret[i] = render(i + 1, i);
+      }
+    } else if (isObject(val)) {
+      keys = Object.keys(val);
+      ret = new Array(keys.length);
+      for (i = 0, l = keys.length; i < l; i++) {
+        key = keys[i];
+        ret[i] = render(val[key], key, i);
+      }
+    }
+    return ret
+  };
+
+  // renderSlot
+  Vue.prototype._t = function (
+    name,
+    fallback,
+    props,
+    bindObject
+  ) {
+    var scopedSlotFn = this.$scopedSlots[name];
+    if (scopedSlotFn) { // scoped slot
+      props = props || {};
+      if (bindObject) {
+        extend(props, bindObject);
+      }
+      return scopedSlotFn(props) || fallback
+    } else {
+      var slotNodes = this.$slots[name];
+      // warn duplicate slot usage
+      if (slotNodes && "development" !== 'production') {
+        slotNodes._rendered && warn(
+          "Duplicate presence of slot \"" + name + "\" found in the same render tree " +
+          "- this will likely cause render errors.",
+          this
+        );
+        slotNodes._rendered = true;
+      }
+      return slotNodes || fallback
+    }
+  };
+
+  // apply v-bind object
+  Vue.prototype._b = function bindProps (
+    data,
+    tag,
+    value,
+    asProp
+  ) {
+    if (value) {
+      if (!isObject(value)) {
+        "development" !== 'production' && warn(
+          'v-bind without argument expects an Object or Array value',
+          this
+        );
+      } else {
+        if (Array.isArray(value)) {
+          value = toObject(value);
+        }
+        for (var key in value) {
+          if (key === 'class' || key === 'style') {
+            data[key] = value[key];
+          } else {
+            var type = data.attrs && data.attrs.type;
+            var hash = asProp || config.mustUseProp(tag, type, key)
+              ? data.domProps || (data.domProps = {})
+              : data.attrs || (data.attrs = {});
+            hash[key] = value[key];
+          }
+        }
+      }
+    }
+    return data
+  };
+
+  // check v-on keyCodes
+  Vue.prototype._k = function checkKeyCodes (
+    eventKeyCode,
+    key,
+    builtInAlias
+  ) {
+    var keyCodes = config.keyCodes[key] || builtInAlias;
+    if (Array.isArray(keyCodes)) {
+      return keyCodes.indexOf(eventKeyCode) === -1
+    } else {
+      return keyCodes !== eventKeyCode
+    }
+  };
+}
+
+function resolveSlots (
+  children,
+  context
+) {
+  var slots = {};
+  if (!children) {
+    return slots
+  }
+  var defaultSlot = [];
+  var name, child;
+  for (var i = 0, l = children.length; i < l; i++) {
+    child = children[i];
+    // named slots should only be respected if the vnode was rendered in the
+    // same context.
+    if ((child.context === context || child.functionalContext === context) &&
+        child.data && (name = child.data.slot)) {
+      var slot = (slots[name] || (slots[name] = []));
+      if (child.tag === 'template') {
+        slot.push.apply(slot, child.children);
+      } else {
+        slot.push(child);
+      }
+    } else {
+      defaultSlot.push(child);
+    }
+  }
+  // ignore single whitespace
+  if (defaultSlot.length && !(
+    defaultSlot.length === 1 &&
+    (defaultSlot[0].text === ' ' || defaultSlot[0].isComment)
+  )) {
+    slots.default = defaultSlot;
+  }
+  return slots
+}
+
+/*  */
+
+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$1 (event, fn, once) {
+  if (once) {
+    target.$once(event, fn);
+  } else {
+    target.$on(event, fn);
+  }
+}
+
+function remove$2 (event, fn) {
+  target.$off(event, fn);
+}
+
+function updateComponentListeners (
+  vm,
+  listeners,
+  oldListeners
+) {
+  target = vm;
+  updateListeners(listeners, oldListeners || {}, add$1, remove$2, vm);
+}
+
+function eventsMixin (Vue) {
+  var hookRE = /^hook:/;
+  Vue.prototype.$on = function (event, fn) {
+    var vm = this;(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
+    }
+    // specific event
+    var cbs = vm._events[event];
+    if (!cbs) {
+      return vm
+    }
+    if (arguments.length === 1) {
+      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.$emit = function (event) {
+    var vm = this;
+    var cbs = vm._events[event];
+    if (cbs) {
+      cbs = cbs.length > 1 ? toArray(cbs) : cbs;
+      var args = toArray(arguments, 1);
+      for (var i = 0, l = cbs.length; i < l; i++) {
+        cbs[i].apply(vm, args);
+      }
+    }
+    return vm
+  };
+}
+
+/*  */
+
+var activeInstance = null;
+
+function initLifecycle (vm) {
+  var options = vm.$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.$refs = {};
+
+  vm._watcher = null;
+  vm._inactive = false;
+  vm._isMounted = false;
+  vm._isDestroyed = false;
+  vm._isBeingDestroyed = false;
+}
+
+function lifecycleMixin (Vue) {
+  Vue.prototype._mount = function (
+    el,
+    hydrating
+  ) {
+    var vm = this;
+    vm.$el = el;
+    if (!vm.$options.render) {
+      vm.$options.render = createEmptyVNode;
+      {
+        /* istanbul ignore if */
+        if (vm.$options.template && vm.$options.template.charAt(0) !== '#') {
+          warn(
+            'You are using the runtime-only build of Vue where the template ' +
+            'option 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');
+    vm._watcher = new Watcher(vm, function updateComponent () {
+      vm._update(vm._render(), hydrating);
+    }, noop);
+    hydrating = false;
+    // manually mounted instance, call mounted on self
+    // mounted is called for render-created child components in its inserted hook
+    if (vm.$vnode == null) {
+      vm._isMounted = true;
+      callHook(vm, 'mounted');
+    }
+    return vm
+  };
+
+  Vue.prototype._update = function (vnode, hydrating) {
+    var vm = this;
+    if (vm._isMounted) {
+      callHook(vm, 'beforeUpdate');
+    }
+    var prevEl = vm.$el;
+    var prevVnode = vm._vnode;
+    var prevActiveInstance = activeInstance;
+    activeInstance = 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 */,
+        vm.$options._parentElm,
+        vm.$options._refElm
+      );
+    } else {
+      // updates
+      vm.$el = vm.__patch__(prevVnode, vnode);
+    }
+    activeInstance = prevActiveInstance;
+    // update __vue__ reference
+    if (prevEl) {
+      prevEl.__vue__ = null;
+    }
+    if (vm.$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._updateFromParent = function (
+    propsData,
+    listeners,
+    parentVnode,
+    renderChildren
+  ) {
+    var vm = this;
+    var hasChildren = !!(vm.$options._renderChildren || renderChildren);
+    vm.$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 props
+    if (propsData && vm.$options.props) {
+      observerState.shouldConvert = false;
+      {
+        observerState.isSettingProps = true;
+      }
+      var propKeys = vm.$options._propKeys || [];
+      for (var i = 0; i < propKeys.length; i++) {
+        var key = propKeys[i];
+        vm[key] = validateProp(key, vm.$options.props, propsData, vm);
+      }
+      observerState.shouldConvert = true;
+      {
+        observerState.isSettingProps = false;
+      }
+      vm.$options.propsData = propsData;
+    }
+    // update listeners
+    if (listeners) {
+      var oldListeners = vm.$options._parentListeners;
+      vm.$options._parentListeners = listeners;
+      updateComponentListeners(vm, listeners, oldListeners);
+    }
+    // resolve slots + force update if has children
+    if (hasChildren) {
+      vm.$slots = resolveSlots(renderChildren, parentVnode.context);
+      vm.$forceUpdate();
+    }
+  };
+
+  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$1(parent.$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;
+    callHook(vm, 'destroyed');
+    // turn off all instance listeners.
+    vm.$off();
+    // remove __vue__ reference
+    if (vm.$el) {
+      vm.$el.__vue__ = null;
+    }
+    // invoke destroy hooks on current rendered tree
+    vm.__patch__(vm._vnode, null);
+  };
+}
+
+function callHook (vm, hook) {
+  var handlers = vm.$options[hook];
+  if (handlers) {
+    for (var i = 0, j = handlers.length; i < j; i++) {
+      handlers[i].call(vm);
+    }
+  }
+  if (vm._hasHookEvent) {
+    vm.$emit('hook:' + hook);
+  }
+}
+
+/*  */
+
+
+var queue = [];
+var has$1 = {};
+var circular = {};
+var waiting = false;
+var flushing = false;
+var index = 0;
+
+/**
+ * Reset the scheduler's state.
+ */
+function resetSchedulerState () {
+  queue.length = 0;
+  has$1 = {};
+  {
+    circular = {};
+  }
+  waiting = flushing = false;
+}
+
+/**
+ * Flush both queues and run the watchers.
+ */
+function flushSchedulerQueue () {
+  flushing = true;
+  var watcher, id, vm;
+
+  // 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];
+    id = watcher.id;
+    has$1[id] = null;
+    watcher.run();
+    // in dev build, check and stop circular updates.
+    if ("development" !== 'production' && has$1[id] != null) {
+      circular[id] = (circular[id] || 0) + 1;
+      if (circular[id] > config._maxUpdateCount) {
+        warn(
+          'You may have an infinite update loop ' + (
+            watcher.user
+              ? ("in watcher with expression \"" + (watcher.expression) + "\"")
+              : "in a component render function."
+          ),
+          watcher.vm
+        );
+        break
+      }
+    }
+  }
+
+  // call updated hooks
+  index = queue.length;
+  while (index--) {
+    watcher = queue[index];
+    vm = watcher.vm;
+    if (vm._watcher === watcher && vm._isMounted) {
+      callHook(vm, 'updated');
+    }
+  }
+
+  // devtool hook
+  /* istanbul ignore if */
+  if (devtools && config.devtools) {
+    devtools.emit('flush');
+  }
+
+  resetSchedulerState();
+}
+
+/**
+ * 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$1[id] == null) {
+    has$1[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 >= 0 && queue[i].id > watcher.id) {
+        i--;
+      }
+      queue.splice(Math.max(i, index) + 1, 0, watcher);
+    }
+    // queue the flush
+    if (!waiting) {
+      waiting = true;
+      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
+) {
+  this.vm = vm;
+  vm._watchers.push(this);
+  // options
+  if (options) {
+    this.deep = !!options.deep;
+    this.user = !!options.user;
+    this.lazy = !!options.lazy;
+    this.sync = !!options.sync;
+  } 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 = function () {};
+      "development" !== 'production' && 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 = this.getter.call(this.vm, this.vm);
+  // "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 this$1 = this;
+
+  var i = this.deps.length;
+  while (i--) {
+    var dep = this$1.deps[i];
+    if (!this$1.newDepIds.has(dep.id)) {
+      dep.removeSub(this$1);
+    }
+  }
+  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) {
+          /* istanbul ignore else */
+          if (config.errorHandler) {
+            config.errorHandler.call(null, e, this.vm);
+          } else {
+            "development" !== 'production' && warn(
+              ("Error in watcher \"" + (this.expression) + "\""),
+              this.vm
+            );
+            throw e
+          }
+        }
+      } 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 this$1 = this;
+
+  var i = this.deps.length;
+  while (i--) {
+    this$1.deps[i].depend();
+  }
+};
+
+/**
+ * Remove self from all dependencies' subscriber list.
+ */
+Watcher.prototype.teardown = function teardown () {
+    var this$1 = this;
+
+  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$1(this.vm._watchers, this);
+    }
+    var i = this.deps.length;
+    while (i--) {
+      this$1.deps[i].removeSub(this$1);
+    }
+    this.active = false;
+  }
+};
+
+/**
+ * Recursively traverse an object to evoke all converted
+ * getters, so that every nested property inside the object
+ * is collected as a "deep" dependency.
+ */
+var seenObjects = new _Set();
+function traverse (val) {
+  seenObjects.clear();
+  _traverse(val, seenObjects);
+}
+
+function _traverse (val, seen) {
+  var i, keys;
+  var isA = Array.isArray(val);
+  if ((!isA && !isObject(val)) || !Object.isExtensible(val)) {
+    return
+  }
+  if (val.__ob__) {
+    var depId = val.__ob__.dep.id;
+    if (seen.has(depId)) {
+      return
+    }
+    seen.add(depId);
+  }
+  if (isA) {
+    i = val.length;
+    while (i--) { _traverse(val[i], seen); }
+  } else {
+    keys = Object.keys(val);
+    i = keys.length;
+    while (i--) { _traverse(val[keys[i]], seen); }
+  }
+}
+
+/*  */
+
+function initState (vm) {
+  vm._watchers = [];
+  var opts = vm.$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) { initWatch(vm, opts.watch); }
+}
+
+var isReservedProp = { key: 1, ref: 1, slot: 1 };
+
+function initProps (vm, props) {
+  var propsData = vm.$options.propsData || {};
+  var keys = vm.$options._propKeys = Object.keys(props);
+  var isRoot = !vm.$parent;
+  // root instance props should be converted
+  observerState.shouldConvert = isRoot;
+  var loop = function ( i ) {
+    var key = keys[i];
+    /* istanbul ignore else */
+    {
+      if (isReservedProp[key]) {
+        warn(
+          ("\"" + key + "\" is a reserved attribute and cannot be used as component prop."),
+          vm
+        );
+      }
+      defineReactive$$1(vm, key, validateProp(key, props, propsData, vm), function () {
+        if (vm.$parent && !observerState.isSettingProps) {
+          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
+          );
+        }
+      });
+    }
+  };
+
+  for (var i = 0; i < keys.length; i++) loop( i );
+  observerState.shouldConvert = true;
+}
+
+function initData (vm) {
+  var data = vm.$options.data;
+  data = vm._data = typeof data === 'function'
+    ? data.call(vm)
+    : data || {};
+  if (!isPlainObject(data)) {
+    data = {};
+    "development" !== 'production' && 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 i = keys.length;
+  while (i--) {
+    if (props && hasOwn(props, keys[i])) {
+      "development" !== 'production' && warn(
+        "The data property \"" + (keys[i]) + "\" is already declared as a prop. " +
+        "Use prop default value instead.",
+        vm
+      );
+    } else {
+      proxy(vm, keys[i]);
+    }
+  }
+  // observe data
+  observe(data, true /* asRootData */);
+}
+
+var computedSharedDefinition = {
+  enumerable: true,
+  configurable: true,
+  get: noop,
+  set: noop
+};
+
+function initComputed (vm, computed) {
+  for (var key in computed) {
+    /* istanbul ignore if */
+    if ("development" !== 'production' && key in vm) {
+      warn(
+        "existing instance property \"" + key + "\" will be " +
+        "overwritten by a computed property with the same name.",
+        vm
+      );
+    }
+    var userDef = computed[key];
+    if (typeof userDef === 'function') {
+      computedSharedDefinition.get = makeComputedGetter(userDef, vm);
+      computedSharedDefinition.set = noop;
+    } else {
+      computedSharedDefinition.get = userDef.get
+        ? userDef.cache !== false
+          ? makeComputedGetter(userDef.get, vm)
+          : bind$1(userDef.get, vm)
+        : noop;
+      computedSharedDefinition.set = userDef.set
+        ? bind$1(userDef.set, vm)
+        : noop;
+    }
+    Object.defineProperty(vm, key, computedSharedDefinition);
+  }
+}
+
+function makeComputedGetter (getter, owner) {
+  var watcher = new Watcher(owner, getter, noop, {
+    lazy: true
+  });
+  return function computedGetter () {
+    if (watcher.dirty) {
+      watcher.evaluate();
+    }
+    if (Dep.target) {
+      watcher.depend();
+    }
+    return watcher.value
+  }
+}
+
+function initMethods (vm, methods) {
+  for (var key in methods) {
+    vm[key] = methods[key] == null ? noop : bind$1(methods[key], vm);
+    if ("development" !== 'production' && methods[key] == null) {
+      warn(
+        "method \"" + key + "\" has an undefined value in the component definition. " +
+        "Did you reference the function correctly?",
+        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, key, handler) {
+  var options;
+  if (isPlainObject(handler)) {
+    options = handler;
+    handler = handler.handler;
+  }
+  if (typeof handler === 'string') {
+    handler = vm[handler];
+  }
+  vm.$watch(key, 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
+  };
+  {
+    dataDef.set = function (newData) {
+      warn(
+        'Avoid replacing instance root $data. ' +
+        'Use nested data properties instead.',
+        this
+      );
+    };
+  }
+  Object.defineProperty(Vue.prototype, '$data', dataDef);
+
+  Vue.prototype.$set = set$1;
+  Vue.prototype.$delete = del;
+
+  Vue.prototype.$watch = function (
+    expOrFn,
+    cb,
+    options
+  ) {
+    var vm = this;
+    options = options || {};
+    options.user = true;
+    var watcher = new Watcher(vm, expOrFn, cb, options);
+    if (options.immediate) {
+      cb.call(vm, watcher.value);
+    }
+    return function unwatchFn () {
+      watcher.teardown();
+    }
+  };
+}
+
+function proxy (vm, key) {
+  if (!isReserved(key)) {
+    Object.defineProperty(vm, key, {
+      configurable: true,
+      enumerable: true,
+      get: function proxyGetter () {
+        return vm._data[key]
+      },
+      set: function proxySetter (val) {
+        vm._data[key] = val;
+      }
+    });
+  }
+}
+
+/*  */
+
+var uid = 0;
+
+function initMixin (Vue) {
+  Vue.prototype._init = function (options) {
+    var vm = this;
+    // a uid
+    vm._uid = uid++;
+    // 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');
+    initState(vm);
+    callHook(vm, 'created');
+    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.
+  opts.parent = options.parent;
+  opts.propsData = options.propsData;
+  opts._parentVnode = options._parentVnode;
+  opts._parentListeners = options._parentListeners;
+  opts._renderChildren = options._renderChildren;
+  opts._componentTag = options._componentTag;
+  opts._parentElm = options._parentElm;
+  opts._refElm = options._refElm;
+  if (options.render) {
+    opts.render = options.render;
+    opts.staticRenderFns = options.staticRenderFns;
+  }
+}
+
+function resolveConstructorOptions (Ctor) {
+  var options = Ctor.options;
+  if (Ctor.super) {
+    var superOptions = Ctor.super.options;
+    var cachedSuperOptions = Ctor.superOptions;
+    var extendOptions = Ctor.extendOptions;
+    if (superOptions !== cachedSuperOptions) {
+      // super option changed
+      Ctor.superOptions = superOptions;
+      extendOptions.render = options.render;
+      extendOptions.staticRenderFns = options.staticRenderFns;
+      extendOptions._scopeId = options._scopeId;
+      options = Ctor.options = mergeOptions(superOptions, extendOptions);
+      if (options.name) {
+        options.components[options.name] = Ctor;
+      }
+    }
+  }
+  return options
+}
+
+function Vue$3 (options) {
+  if ("development" !== 'production' &&
+    !(this instanceof Vue$3)) {
+    warn('Vue is a constructor and should be called with the `new` keyword');
+  }
+  this._init(options);
+}
+
+initMixin(Vue$3);
+stateMixin(Vue$3);
+eventsMixin(Vue$3);
+lifecycleMixin(Vue$3);
+renderMixin(Vue$3);
+
+/*  */
+
+function initUse (Vue) {
+  Vue.use = function (plugin) {
+    /* istanbul ignore if */
+    if (plugin.installed) {
+      return
+    }
+    // additional parameters
+    var args = toArray(arguments, 1);
+    args.unshift(this);
+    if (typeof plugin.install === 'function') {
+      plugin.install.apply(plugin, args);
+    } else {
+      plugin.apply(null, args);
+    }
+    plugin.installed = true;
+    return this
+  };
+}
+
+/*  */
+
+function initMixin$1 (Vue) {
+  Vue.mixin = function (mixin) {
+    this.options = mergeOptions(this.options, mixin);
+  };
+}
+
+/*  */
+
+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 (!/^[a-zA-Z][\w-]*$/.test(name)) {
+        warn(
+          'Invalid component name: "' + name + '". Component names ' +
+          'can only contain alphanumeric characters and the hyphen, ' +
+          'and must start with a letter.'
+        );
+      }
+    }
+    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;
+    // 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.
+    config._assetTypes.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;
+    // cache constructor
+    cachedCtors[SuperId] = Sub;
+    return Sub
+  };
+}
+
+/*  */
+
+function initAssetRegisters (Vue) {
+  /**
+   * Create asset registration methods.
+   */
+  config._assetTypes.forEach(function (type) {
+    Vue[type] = function (
+      id,
+      definition
+    ) {
+      if (!definition) {
+        return this.options[type + 's'][id]
+      } else {
+        /* istanbul ignore if */
+        {
+          if (type === 'component' && config.isReservedTag(id)) {
+            warn(
+              'Do not use built-in or reserved HTML elements as component ' +
+              'id: ' + 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
+      }
+    };
+  });
+}
+
+/*  */
+
+var patternTypes = [String, RegExp];
+
+function getComponentName (opts) {
+  return opts && (opts.Ctor.options.name || opts.tag)
+}
+
+function matches (pattern, name) {
+  if (typeof pattern === 'string') {
+    return pattern.split(',').indexOf(name) > -1
+  } else {
+    return pattern.test(name)
+  }
+}
+
+function pruneCache (cache, filter) {
+  for (var key in cache) {
+    var cachedNode = cache[key];
+    if (cachedNode) {
+      var name = getComponentName(cachedNode.componentOptions);
+      if (name && !filter(name)) {
+        pruneCacheEntry(cachedNode);
+        cache[key] = null;
+      }
+    }
+  }
+}
+
+function pruneCacheEntry (vnode) {
+  if (vnode) {
+    if (!vnode.componentInstance._inactive) {
+      callHook(vnode.componentInstance, 'deactivated');
+    }
+    vnode.componentInstance.$destroy();
+  }
+}
+
+var KeepAlive = {
+  name: 'keep-alive',
+  abstract: true,
+
+  props: {
+    include: patternTypes,
+    exclude: patternTypes
+  },
+
+  created: function created () {
+    this.cache = Object.create(null);
+  },
+
+  destroyed: function destroyed () {
+    var this$1 = this;
+
+    for (var key in this.cache) {
+      pruneCacheEntry(this$1.cache[key]);
+    }
+  },
+
+  watch: {
+    include: function include (val) {
+      pruneCache(this.cache, function (name) { return matches(val, name); });
+    },
+    exclude: function exclude (val) {
+      pruneCache(this.cache, function (name) { return !matches(val, name); });
+    }
+  },
+
+  render: function render () {
+    var vnode = getFirstComponentChild(this.$slots.default);
+    var componentOptions = vnode && vnode.componentOptions;
+    if (componentOptions) {
+      // check pattern
+      var name = getComponentName(componentOptions);
+      if (name && (
+        (this.include && !matches(this.include, name)) ||
+        (this.exclude && matches(this.exclude, name))
+      )) {
+        return vnode
+      }
+      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 (this.cache[key]) {
+        vnode.componentInstance = this.cache[key].componentInstance;
+      } else {
+        this.cache[key] = vnode;
+      }
+      vnode.data.keepAlive = true;
+    }
+    return vnode
+  }
+};
+
+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);
+  Vue.util = util;
+  Vue.set = set$1;
+  Vue.delete = del;
+  Vue.nextTick = nextTick;
+
+  Vue.options = Object.create(null);
+  config._assetTypes.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$3);
+
+Object.defineProperty(Vue$3.prototype, '$isServer', {
+  get: isServerRendering
+});
+
+Vue$3.version = '2.1.10';
+
+/*  */
+
+// attributes that should be using props for binding
+var acceptValue = makeMap('input,textarea,option,select');
+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 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 (childNode.componentInstance) {
+    childNode = childNode.componentInstance._vnode;
+    if (childNode.data) {
+      data = mergeClassData(childNode.data, data);
+    }
+  }
+  while ((parentNode = parentNode.parent)) {
+    if (parentNode.data) {
+      data = mergeClassData(data, parentNode.data);
+    }
+  }
+  return genClassFromData(data)
+}
+
+function mergeClassData (child, parent) {
+  return {
+    staticClass: concat(child.staticClass, parent.staticClass),
+    class: child.class
+      ? [child.class, parent.class]
+      : parent.class
+  }
+}
+
+function genClassFromData (data) {
+  var dynamicClass = data.class;
+  var staticClass = data.staticClass;
+  if (staticClass || dynamicClass) {
+    return concat(staticClass, stringifyClass(dynamicClass))
+  }
+  /* istanbul ignore next */
+  return ''
+}
+
+function concat (a, b) {
+  return a ? b ? (a + ' ' + b) : a : (b || '')
+}
+
+function stringifyClass (value) {
+  var res = '';
+  if (!value) {
+    return res
+  }
+  if (typeof value === 'string') {
+    return value
+  }
+  if (Array.isArray(value)) {
+    var stringified;
+    for (var i = 0, l = value.length; i < l; i++) {
+      if (value[i]) {
+        if ((stringified = stringifyClass(value[i]))) {
+          res += stringified + ' ';
+        }
+      }
+    }
+    return res.slice(0, -1)
+  }
+  if (isObject(value)) {
+    for (var key in value) {
+      if (value[key]) { res += key + ' '; }
+    }
+    return res.slice(0, -1)
+  }
+  /* istanbul ignore next */
+  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,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'
+);
+
+// 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,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()))
+  }
+}
+
+/*  */
+
+/**
+ * Query an element selector if it's not an element already.
+ */
+function query (el) {
+  if (typeof el === 'string') {
+    var selector = el;
+    el = document.querySelector(el);
+    if (!el) {
+      "development" !== 'production' && warn(
+        'Cannot find element: ' + selector
+      );
+      return document.createElement('div')
+    }
+  }
+  return el
+}
+
+/*  */
+
+function createElement$1 (tagName, vnode) {
+  var elm = document.createElement(tagName);
+  if (tagName !== 'select') {
+    return elm
+  }
+  if (vnode.data && vnode.data.attrs && 'multiple' in vnode.data.attrs) {
+    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 setAttribute (node, key, val) {
+  node.setAttribute(key, val);
+}
+
+
+var nodeOps = 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,
+	setAttribute: setAttribute
+});
+
+/*  */
+
+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 (!key) { return }
+
+  var vm = vnode.context;
+  var ref = vnode.componentInstance || vnode.elm;
+  var refs = vm.$refs;
+  if (isRemoval) {
+    if (Array.isArray(refs[key])) {
+      remove$1(refs[key], ref);
+    } else if (refs[key] === ref) {
+      refs[key] = undefined;
+    }
+  } else {
+    if (vnode.data.refInFor) {
+      if (Array.isArray(refs[key]) && refs[key].indexOf(ref) < 0) {
+        refs[key].push(ref);
+      } else {
+        refs[key] = [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$1 = ['create', 'activate', 'update', 'remove', 'destroy'];
+
+function isUndef (s) {
+  return s == null
+}
+
+function isDef (s) {
+  return s != null
+}
+
+function sameVnode (vnode1, vnode2) {
+  return (
+    vnode1.key === vnode2.key &&
+    vnode1.tag === vnode2.tag &&
+    vnode1.isComment === vnode2.isComment &&
+    !vnode1.data === !vnode2.data
+  )
+}
+
+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$1.length; ++i) {
+    cbs[hooks$1[i]] = [];
+    for (j = 0; j < modules.length; ++j) {
+      if (modules[j][hooks$1[i]] !== undefined) { cbs[hooks$1[i]].push(modules[j][hooks$1[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 (parent) {
+      nodeOps.removeChild(parent, el);
+    }
+  }
+
+  var inPre = 0;
+  function createElm (vnode, insertedVnodeQueue, parentElm, refElm, nested) {
+    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) {
+          inPre++;
+        }
+        if (
+          !inPre &&
+          !vnode.ns &&
+          !(config.ignoredElements.length && config.ignoredElements.indexOf(tag) > -1) &&
+          config.isUnknownElement(tag)
+        ) {
+          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 ("development" !== 'production' && data && data.pre) {
+        inPre--;
+      }
+    } else if (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 */, parentElm, refElm);
+      }
+      // 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);
+        if (isReactivated) {
+          reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm);
+        }
+        return true
+      }
+    }
+  }
+
+  function initComponent (vnode, insertedVnodeQueue) {
+    if (vnode.data.pendingInsert) {
+      insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert);
+    }
+    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) {
+    if (parent) {
+      if (ref) {
+        nodeOps.insertBefore(parent, elm, ref);
+      } else {
+        nodeOps.appendChild(parent, elm);
+      }
+    }
+  }
+
+  function createChildren (vnode, children, insertedVnodeQueue) {
+    if (Array.isArray(children)) {
+      for (var i = 0; i < children.length; ++i) {
+        createElm(children[i], insertedVnodeQueue, vnode.elm, null, true);
+      }
+    } else if (isPrimitive(vnode.text)) {
+      nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(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$1](emptyNode, vnode);
+    }
+    i = vnode.data.hook; // Reuse variable
+    if (isDef(i)) {
+      if (i.create) { i.create(emptyNode, vnode); }
+      if (i.insert) { insertedVnodeQueue.push(vnode); }
+    }
+  }
+
+  // set scope id attribute for scoped CSS.
+  // this is implemented as a special case to avoid the overhead
+  // of going through the normal attribute patching process.
+  function setScope (vnode) {
+    var i;
+    if (isDef(i = vnode.context) && isDef(i = i.$options._scopeId)) {
+      nodeOps.setAttribute(vnode.elm, i, '');
+    }
+    if (isDef(i = activeInstance) &&
+        i !== vnode.context &&
+        isDef(i = i.$options._scopeId)) {
+      nodeOps.setAttribute(vnode.elm, i, '');
+    }
+  }
+
+  function addVnodes (parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) {
+    for (; startIdx <= endIdx; ++startIdx) {
+      createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm);
+    }
+  }
+
+  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 (rm || isDef(vnode.data)) {
+      var listeners = cbs.remove.length + 1;
+      if (!rm) {
+        // directly removing
+        rm = createRmCb(vnode.elm, listeners);
+      } else {
+        // we have a recursively passed down rm callback
+        // increase the listeners count
+        rm.listeners += 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, elmToMove, 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;
+
+    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);
+        oldStartVnode = oldCh[++oldStartIdx];
+        newStartVnode = newCh[++newStartIdx];
+      } else if (sameVnode(oldEndVnode, newEndVnode)) {
+        patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue);
+        oldEndVnode = oldCh[--oldEndIdx];
+        newEndVnode = newCh[--newEndIdx];
+      } else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right
+        patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue);
+        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);
+        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] : null;
+        if (isUndef(idxInOld)) { // New element
+          createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm);
+          newStartVnode = newCh[++newStartIdx];
+        } else {
+          elmToMove = oldCh[idxInOld];
+          /* istanbul ignore if */
+          if ("development" !== 'production' && !elmToMove) {
+            warn(
+              'It seems there are duplicate keys that is causing an update error. ' +
+              'Make sure each v-for item has a unique key.'
+            );
+          }
+          if (sameVnode(elmToMove, newStartVnode)) {
+            patchVnode(elmToMove, newStartVnode, insertedVnodeQueue);
+            oldCh[idxInOld] = undefined;
+            canMove && nodeOps.insertBefore(parentElm, newStartVnode.elm, oldStartVnode.elm);
+            newStartVnode = newCh[++newStartIdx];
+          } else {
+            // same key but different element. treat as new element
+            createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm);
+            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 patchVnode (oldVnode, vnode, insertedVnodeQueue, removeOnly) {
+    if (oldVnode === vnode) {
+      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 (vnode.isStatic &&
+        oldVnode.isStatic &&
+        vnode.key === oldVnode.key &&
+        (vnode.isCloned || vnode.isOnce)) {
+      vnode.elm = oldVnode.elm;
+      vnode.componentInstance = oldVnode.componentInstance;
+      return
+    }
+    var i;
+    var data = vnode.data;
+    var hasData = isDef(data);
+    if (hasData && isDef(i = data.hook) && isDef(i = i.prepatch)) {
+      i(oldVnode, vnode);
+    }
+    var elm = vnode.elm = oldVnode.elm;
+    var oldCh = oldVnode.children;
+    var ch = vnode.children;
+    if (hasData && 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)) {
+        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 (hasData) {
+      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 (initial && vnode.parent) {
+      vnode.parent.data.pendingInsert = queue;
+    } else {
+      for (var i = 0; i < queue.length; ++i) {
+        queue[i].data.hook.insert(queue[i]);
+      }
+    }
+  }
+
+  var bailed = 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
+  var isRenderedModule = makeMap('attrs,style,class,staticClass,staticStyle,key');
+
+  // Note: this is a browser-only function so we can assume elms are DOM nodes.
+  function hydrate (elm, vnode, insertedVnodeQueue) {
+    {
+      if (!assertNodeMatch(elm, vnode)) {
+        return false
+      }
+    }
+    vnode.elm = elm;
+    var tag = vnode.tag;
+    var data = vnode.data;
+    var children = vnode.children;
+    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 {
+          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)) {
+              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) {
+            if ("development" !== 'production' &&
+                typeof console !== 'undefined' &&
+                !bailed) {
+              bailed = true;
+              console.warn('Parent: ', elm);
+              console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children);
+            }
+            return false
+          }
+        }
+      }
+      if (isDef(data)) {
+        for (var key in data) {
+          if (!isRenderedModule(key)) {
+            invokeCreateHooks(vnode, insertedVnodeQueue);
+            break
+          }
+        }
+      }
+    } else if (elm.data !== vnode.text) {
+      elm.data = vnode.text;
+    }
+    return true
+  }
+
+  function assertNodeMatch (node, vnode) {
+    if (vnode.tag) {
+      return (
+        vnode.tag.indexOf('vue-component') === 0 ||
+        vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase())
+      )
+    } else {
+      return node.nodeType === (vnode.isComment ? 8 : 3)
+    }
+  }
+
+  return function patch (oldVnode, vnode, hydrating, removeOnly, parentElm, refElm) {
+    if (!vnode) {
+      if (oldVnode) { invokeDestroyHook(oldVnode); }
+      return
+    }
+
+    var isInitialPatch = false;
+    var insertedVnodeQueue = [];
+
+    if (!oldVnode) {
+      // empty mount (likely as component), create new root element
+      isInitialPatch = true;
+      createElm(vnode, insertedVnodeQueue, parentElm, refElm);
+    } else {
+      var isRealElement = isDef(oldVnode.nodeType);
+      if (!isRealElement && sameVnode(oldVnode, vnode)) {
+        // patch existing root node
+        patchVnode(oldVnode, vnode, insertedVnodeQueue, 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('server-rendered')) {
+            oldVnode.removeAttribute('server-rendered');
+            hydrating = true;
+          }
+          if (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$1 = nodeOps.parentNode(oldElm);
+        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$1,
+          nodeOps.nextSibling(oldElm)
+        );
+
+        if (vnode.parent) {
+          // component root element replaced.
+          // update parent placeholder node element, recursively
+          var ancestor = vnode.parent;
+          while (ancestor) {
+            ancestor.elm = vnode.elm;
+            ancestor = ancestor.parent;
+          }
+          if (isPatchable(vnode)) {
+            for (var i = 0; i < cbs.create.length; ++i) {
+              cbs.create[i](emptyNode, vnode.parent);
+            }
+          }
+        }
+
+        if (parentElm$1 !== null) {
+          removeVnodes(parentElm$1, [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;
+      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.data.hook || (vnode.data.hook = {}), 'insert', callInsert, 'dir-insert');
+    } else {
+      callInsert();
+    }
+  }
+
+  if (dirsWithPostpatch.length) {
+    mergeVNodeHook(vnode.data.hook || (vnode.data.hook = {}), 'postpatch', function () {
+      for (var i = 0; i < dirsWithPostpatch.length; i++) {
+        callHook$1(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode);
+      }
+    }, 'dir-postpatch');
+  }
+
+  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$1 (
+  dirs,
+  vm
+) {
+  var res = Object.create(null);
+  if (!dirs) {
+    return res
+  }
+  var i, dir;
+  for (i = 0; i < dirs.length; i++) {
+    dir = dirs[i];
+    if (!dir.modifiers) {
+      dir.modifiers = emptyModifiers;
+    }
+    res[getRawDirName(dir)] = dir;
+    dir.def = resolveAsset(vm.$options, 'directives', dir.name, true);
+  }
+  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) {
+    fn(vnode.elm, dir, vnode, oldVnode, isDestroy);
+  }
+}
+
+var baseModules = [
+  ref,
+  directives
+];
+
+/*  */
+
+function updateAttrs (oldVnode, vnode) {
+  if (!oldVnode.data.attrs && !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 (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]
+  /* istanbul ignore if */
+  if (isIE9 && attrs.value !== oldAttrs.value) {
+    setAttr(elm, 'value', attrs.value);
+  }
+  for (key in oldAttrs) {
+    if (attrs[key] == null) {
+      if (isXlink(key)) {
+        elm.removeAttributeNS(xlinkNS, getXlinkProp(key));
+      } else if (!isEnumeratedAttr(key)) {
+        elm.removeAttribute(key);
+      }
+    }
+  }
+}
+
+function setAttr (el, key, value) {
+  if (isBooleanAttr(key)) {
+    // set attribute for blank value
+    // e.g. <option disabled>Select one</option>
+    if (isFalsyAttrValue(value)) {
+      el.removeAttribute(key);
+    } else {
+      el.setAttribute(key, key);
+    }
+  } else if (isEnumeratedAttr(key)) {
+    el.setAttribute(key, isFalsyAttrValue(value) || value === 'false' ? 'false' : 'true');
+  } else if (isXlink(key)) {
+    if (isFalsyAttrValue(value)) {
+      el.removeAttributeNS(xlinkNS, getXlinkProp(key));
+    } else {
+      el.setAttributeNS(xlinkNS, key, value);
+    }
+  } else {
+    if (isFalsyAttrValue(value)) {
+      el.removeAttribute(key);
+    } else {
+      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 (!data.staticClass && !data.class &&
+      (!oldData || (!oldData.staticClass && !oldData.class))) {
+    return
+  }
+
+  var cls = genClassForVnode(vnode);
+
+  // handle transition classes
+  var transitionClass = el._transitionClasses;
+  if (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 target$1;
+
+function add$2 (
+  event,
+  handler,
+  once,
+  capture
+) {
+  if (once) {
+    var oldHandler = handler;
+    var _target = target$1; // save current target element in closure
+    handler = function (ev) {
+      remove$3(event, handler, capture, _target);
+      arguments.length === 1
+        ? oldHandler(ev)
+        : oldHandler.apply(null, arguments);
+    };
+  }
+  target$1.addEventListener(event, handler, capture);
+}
+
+function remove$3 (
+  event,
+  handler,
+  capture,
+  _target
+) {
+  (_target || target$1).removeEventListener(event, handler, capture);
+}
+
+function updateDOMListeners (oldVnode, vnode) {
+  if (!oldVnode.data.on && !vnode.data.on) {
+    return
+  }
+  var on = vnode.data.on || {};
+  var oldOn = oldVnode.data.on || {};
+  target$1 = vnode.elm;
+  updateListeners(on, oldOn, add$2, remove$3, vnode.context);
+}
+
+var events = {
+  create: updateDOMListeners,
+  update: updateDOMListeners
+};
+
+/*  */
+
+function updateDOMProps (oldVnode, vnode) {
+  if (!oldVnode.data.domProps && !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 (props.__ob__) {
+    props = vnode.data.domProps = extend({}, props);
+  }
+
+  for (key in oldProps) {
+    if (props[key] == null) {
+      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 }
+    }
+
+    if (key === 'value') {
+      // 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 = cur == null ? '' : String(cur);
+      if (shouldUpdateValue(elm, vnode, strCur)) {
+        elm.value = strCur;
+      }
+    } else {
+      elm[key] = cur;
+    }
+  }
+}
+
+// check platforms/web/util/attrs.js acceptValue
+
+
+function shouldUpdateValue (
+  elm,
+  vnode,
+  checkVal
+) {
+  return (!elm.composing && (
+    vnode.tag === 'option' ||
+    isDirty(elm, checkVal) ||
+    isInputChanged(vnode, checkVal)
+  ))
+}
+
+function isDirty (elm, checkVal) {
+  // return true when textbox (.number and .trim) loses focus and its value is not equal to the updated value
+  return document.activeElement !== elm && elm.value !== checkVal
+}
+
+function isInputChanged (vnode, newVal) {
+  var value = vnode.elm.value;
+  var modifiers = vnode.elm._vModifiers; // injected by v-model runtime
+  if ((modifiers && modifiers.number) || vnode.elm.type === 'number') {
+    return toNumber(value) !== toNumber(newVal)
+  }
+  if (modifiers && 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.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(name, val.replace(importantRE, ''), 'important');
+  } else {
+    el.style[normalize(name)] = val;
+  }
+};
+
+var prefixes = ['Webkit', 'Moz', 'ms'];
+
+var testEl;
+var normalize = cached(function (prop) {
+  testEl = testEl || document.createElement('div');
+  prop = camelize(prop);
+  if (prop !== 'filter' && (prop in testEl.style)) {
+    return prop
+  }
+  var upper = prop.charAt(0).toUpperCase() + prop.slice(1);
+  for (var i = 0; i < prefixes.length; i++) {
+    var prefixed = prefixes[i] + upper;
+    if (prefixed in testEl.style) {
+      return prefixed
+    }
+  }
+});
+
+function updateStyle (oldVnode, vnode) {
+  var data = vnode.data;
+  var oldData = oldVnode.data;
+
+  if (!data.staticStyle && !data.style &&
+      !oldData.staticStyle && !oldData.style) {
+    return
+  }
+
+  var cur, name;
+  var el = vnode.elm;
+  var oldStaticStyle = oldVnode.data.staticStyle;
+  var oldStyleBinding = oldVnode.data.style || {};
+
+  // if static style exists, stylebinding already merged into it when doing normalizeStyleData
+  var oldStyle = oldStaticStyle || oldStyleBinding;
+
+  var style = normalizeStyleBinding(vnode.data.style) || {};
+
+  vnode.data.style = style.__ob__ ? extend({}, style) : style;
+
+  var newStyle = getStyle(vnode, true);
+
+  for (name in oldStyle) {
+    if (newStyle[name] == null) {
+      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
+};
+
+/*  */
+
+/**
+ * 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.trim()) {
+    return
+  }
+
+  /* istanbul ignore else */
+  if (el.classList) {
+    if (cls.indexOf(' ') > -1) {
+      cls.split(/\s+/).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.trim()) {
+    return
+  }
+
+  /* istanbul ignore else */
+  if (el.classList) {
+    if (cls.indexOf(' ') > -1) {
+      cls.split(/\s+/).forEach(function (c) { return el.classList.remove(c); });
+    } else {
+      el.classList.remove(cls);
+    }
+  } else {
+    var cur = ' ' + el.getAttribute('class') + ' ';
+    var tar = ' ' + cls + ' ';
+    while (cur.indexOf(tar) >= 0) {
+      cur = cur.replace(tar, ' ');
+    }
+    el.setAttribute('class', cur.trim());
+  }
+}
+
+/*  */
+
+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;
+
+function nextFrame (fn) {
+  raf(function () {
+    raf(fn);
+  });
+}
+
+function addTransitionClass (el, cls) {
+  (el._transitionClasses || (el._transitionClasses = [])).push(cls);
+  addClass(el, cls);
+}
+
+function removeTransitionClass (el, cls) {
+  if (el._transitionClasses) {
+    remove$1(el._transitionClasses, cls);
+  }
+  removeClass(el, cls);
+}
+
+function whenTransitionEnds (
+  el,
+  expectedType,
+  cb
+) {
+  var ref = getTransitionInfo(el, expectedType);
+  var type = ref.type;
+  var timeout = ref.timeout;
+  var propCount = ref.propCount;
+  if (!type) { return cb() }
+  var event = type === TRANSITION ? transitionEndEvent : animationEndEvent;
+  var ended = 0;
+  var end = function () {
+    el.removeEventListener(event, onEnd);
+    cb();
+  };
+  var onEnd = function (e) {
+    if (e.target === el) {
+      if (++ended >= propCount) {
+        end();
+      }
+    }
+  };
+  setTimeout(function () {
+    if (ended < propCount) {
+      end();
+    }
+  }, timeout + 1);
+  el.addEventListener(event, onEnd);
+}
+
+var transformRE = /\b(transform|all)(,|$)/;
+
+function getTransitionInfo (el, expectedType) {
+  var styles = window.getComputedStyle(el);
+  var transitioneDelays = styles[transitionProp + 'Delay'].split(', ');
+  var transitionDurations = styles[transitionProp + 'Duration'].split(', ');
+  var transitionTimeout = getTimeout(transitioneDelays, 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])
+  }))
+}
+
+function toMs (s) {
+  return Number(s.slice(0, -1)) * 1000
+}
+
+/*  */
+
+function enter (vnode, toggleDisplay) {
+  var el = vnode.elm;
+
+  // call leave callback now
+  if (el._leaveCb) {
+    el._leaveCb.cancelled = true;
+    el._leaveCb();
+  }
+
+  var data = resolveTransition(vnode.data.transition);
+  if (!data) {
+    return
+  }
+
+  /* istanbul ignore if */
+  if (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;
+
+  // 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) {
+    transitionNode = transitionNode.parent;
+    context = transitionNode.context;
+  }
+
+  var isAppear = !context._isMounted || !vnode.isRootInsert;
+
+  if (isAppear && !appear && appear !== '') {
+    return
+  }
+
+  var startClass = isAppear ? appearClass : enterClass;
+  var activeClass = isAppear ? appearActiveClass : enterActiveClass;
+  var toClass = isAppear ? 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 expectsCSS = css !== false && !isIE9;
+  var userWantsControl =
+    enterHook &&
+    // enterHook may be a bound method which exposes
+    // the length of original fn as _length
+    (enterHook._length || enterHook.length) > 1;
+
+  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.data.hook || (vnode.data.hook = {}), '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);
+    }, 'transition-insert');
+  }
+
+  // start enter transition
+  beforeEnterHook && beforeEnterHook(el);
+  if (expectsCSS) {
+    addTransitionClass(el, startClass);
+    addTransitionClass(el, activeClass);
+    nextFrame(function () {
+      addTransitionClass(el, toClass);
+      removeTransitionClass(el, startClass);
+      if (!cb.cancelled && !userWantsControl) {
+        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 (el._enterCb) {
+    el._enterCb.cancelled = true;
+    el._enterCb();
+  }
+
+  var data = resolveTransition(vnode.data.transition);
+  if (!data) {
+    return rm()
+  }
+
+  /* istanbul ignore if */
+  if (el._leaveCb || el.nodeType !== 1) {
+    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 expectsCSS = css !== false && !isIE9;
+  var userWantsControl =
+    leave &&
+    // leave hook may be a bound method which exposes
+    // the length of original fn as _length
+    (leave._length || leave.length) > 1;
+
+  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._pending || (el.parentNode._pending = {}))[vnode.key] = vnode;
+    }
+    beforeLeave && beforeLeave(el);
+    if (expectsCSS) {
+      addTransitionClass(el, leaveClass);
+      addTransitionClass(el, leaveActiveClass);
+      nextFrame(function () {
+        addTransitionClass(el, leaveToClass);
+        removeTransitionClass(el, leaveClass);
+        if (!cb.cancelled && !userWantsControl) {
+          whenTransitionEnds(el, type, cb);
+        }
+      });
+    }
+    leave && leave(el, cb);
+    if (!expectsCSS && !userWantsControl) {
+      cb();
+    }
+  }
+}
+
+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"),
+    leaveClass: (name + "-leave"),
+    appearClass: (name + "-enter"),
+    enterToClass: (name + "-enter-to"),
+    leaveToClass: (name + "-leave-to"),
+    appearToClass: (name + "-enter-to"),
+    enterActiveClass: (name + "-enter-active"),
+    leaveActiveClass: (name + "-leave-active"),
+    appearActiveClass: (name + "-enter-active")
+  }
+});
+
+function once (fn) {
+  var called = false;
+  return function () {
+    if (!called) {
+      called = true;
+      fn();
+    }
+  }
+}
+
+function _enter (_, vnode) {
+  if (!vnode.data.show) {
+    enter(vnode);
+  }
+}
+
+var transition = inBrowser ? {
+  create: _enter,
+  activate: _enter,
+  remove: function remove (vnode, rm) {
+    /* istanbul ignore else */
+    if (!vnode.data.show) {
+      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$1 = createPatchFunction({ nodeOps: nodeOps, modules: modules });
+
+/**
+ * Not type checking this file because flow doesn't like attaching
+ * properties to Elements.
+ */
+
+var modelableTagRE = /^input|select|textarea|vue-component-[0-9]+(-[0-9a-zA-Z_-]*)?$/;
+
+/* 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 model = {
+  inserted: function inserted (el, binding, vnode) {
+    {
+      if (!modelableTagRE.test(vnode.tag)) {
+        warn(
+          "v-model is not supported on element type: <" + (vnode.tag) + ">. " +
+          'If you are working with contenteditable, it\'s recommended to ' +
+          'wrap a library dedicated for that purpose inside a custom component.',
+          vnode.context
+        );
+      }
+    }
+    if (vnode.tag === 'select') {
+      var cb = function () {
+        setSelected(el, binding, vnode.context);
+      };
+      cb();
+      /* istanbul ignore if */
+      if (isIE || isEdge) {
+        setTimeout(cb, 0);
+      }
+    } else if (vnode.tag === 'textarea' || el.type === 'text') {
+      el._vModifiers = binding.modifiers;
+      if (!binding.modifiers.lazy) {
+        if (!isAndroid) {
+          el.addEventListener('compositionstart', onCompositionStart);
+          el.addEventListener('compositionend', 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 needReset = el.multiple
+        ? binding.value.some(function (v) { return hasNoMatchingOption(v, el.options); })
+        : binding.value !== binding.oldValue && hasNoMatchingOption(binding.value, el.options);
+      if (needReset) {
+        trigger(el, 'change');
+      }
+    }
+  }
+};
+
+function setSelected (el, binding, vm) {
+  var value = binding.value;
+  var isMultiple = el.multiple;
+  if (isMultiple && !Array.isArray(value)) {
+    "development" !== 'production' && 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) {
+  for (var i = 0, l = options.length; i < l; i++) {
+    if (looseEqual(getValue(options[i]), value)) {
+      return false
+    }
+  }
+  return true
+}
+
+function getValue (option) {
+  return '_value' in option
+    ? option._value
+    : option.value
+}
+
+function onCompositionStart (e) {
+  e.target.composing = true;
+}
+
+function onCompositionEnd (e) {
+  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 = vnode.data && vnode.data.transition;
+    var originalDisplay = el.__vOriginalDisplay =
+      el.style.display === 'none' ? '' : el.style.display;
+    if (value && transition && !isIE9) {
+      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 = vnode.data && vnode.data.transition;
+    if (transition && !isIE9) {
+      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: model,
+  show: show
+};
+
+/*  */
+
+// Provides transition support for a single element/component.
+// supports transition mode (out-in / in-out)
+
+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
+};
+
+// 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$1].fn;
+  }
+  return data
+}
+
+function placeholder (h, rawChild) {
+  return /\d-keep-alive$/.test(rawChild.tag)
+    ? h('keep-alive')
+    : null
+}
+
+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 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(function (c) { return c.tag; });
+    /* istanbul ignore if */
+    if (!children.length) {
+      return
+    }
+
+    // warn multiple elements
+    if ("development" !== 'production' && children.length > 1) {
+      warn(
+        '<transition> can only be used on a single element. Use ' +
+        '<transition-group> for lists.',
+        this.$parent
+      );
+    }
+
+    var mode = this.mode;
+
+    // warn invalid mode
+    if ("development" !== 'production' &&
+        mode && mode !== 'in-out' && mode !== 'out-in') {
+      warn(
+        'invalid <transition> mode: ' + mode,
+        this.$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) + "-";
+    var key = child.key = child.key == null
+      ? 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(function (d) { return d.name === 'show'; })) {
+      child.data.show = true;
+    }
+
+    if (oldChild && oldChild.data && !isSameChild(child, oldChild)) {
+      // replace old child transition data with fresh one
+      // important for dynamic transitions!
+      var oldData = oldChild && (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();
+        }, key);
+        return placeholder(h, rawChild)
+      } else if (mode === 'in-out') {
+        var delayedLeave;
+        var performLeave = function () { delayedLeave(); };
+        mergeVNodeHook(data, 'afterEnter', performLeave, key);
+        mergeVNodeHook(data, 'enterCancelled', performLeave, key);
+        mergeVNodeHook(oldData, 'delayLeave', function (leave) {
+          delayedLeave = leave;
+        }, key);
+      }
+    }
+
+    return rawChild
+  }
+};
+
+/*  */
+
+// Provides transition support for list items.
+// supports move transitions using the FLIP technique.
+
+// Because the vdom's children update algorithm is "unstable" - i.e.
+// it doesn't guarantee the relative positioning of removed elements,
+// we force transition-group to update its children into two passes:
+// in the first pass, we remove all nodes that need to be removed,
+// triggering their leaving transition; in the second pass, we insert/move
+// into the final disired state. This way in the second pass removed
+// nodes will remain where they should be.
+
+var props = extend({
+  tag: String,
+  moveClass: String
+}, transitionProps);
+
+delete props.mode;
+
+var TransitionGroup = {
+  props: props,
+
+  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$1);
+        }
+      }
+      this.kept = h(tag, null, kept);
+      this.removed = removed;
+    }
+
+    return h(tag, null, children)
+  },
+
+  beforeUpdate: function beforeUpdate () {
+    // force removing pass
+    this.__patch__(
+      this._vnode,
+      this.kept,
+      false, // hydrating
+      true // removeOnly (!important, avoids unnecessary moves)
+    );
+    this._vnode = this.kept;
+  },
+
+  updated: function updated () {
+    var children = this.prevChildren;
+    var moveClass = this.moveClass || ((this.name || 'v') + '-move');
+    if (!children.length || !this.hasMove(children[0].elm, moveClass)) {
+      return
+    }
+
+    // we divide the work into three loops to avoid mixing DOM reads and writes
+    // in each iteration - which helps prevent layout thrashing.
+    children.forEach(callPendingCbs);
+    children.forEach(recordPosition);
+    children.forEach(applyTranslation);
+
+    // force reflow to put everything in position
+    var f = document.body.offsetHeight; // eslint-disable-line
+
+    children.forEach(function (c) {
+      if (c.data.moved) {
+        var el = c.elm;
+        var s = el.style;
+        addTransitionClass(el, moveClass);
+        s.transform = s.WebkitTransform = s.transitionDuration = '';
+        el.addEventListener(transitionEndEvent, el._moveCb = function cb (e) {
+          if (!e || /transform$/.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
+      }
+      if (this._hasMove != null) {
+        return this._hasMove
+      }
+      addTransitionClass(el, moveClass);
+      var info = getTransitionInfo(el);
+      removeTransitionClass(el, moveClass);
+      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$3.config.isUnknownElement = isUnknownElement;
+Vue$3.config.isReservedTag = isReservedTag;
+Vue$3.config.getTagNamespace = getTagNamespace;
+Vue$3.config.mustUseProp = mustUseProp;
+
+// install platform runtime directives & components
+extend(Vue$3.options.directives, platformDirectives);
+extend(Vue$3.options.components, platformComponents);
+
+// install platform patch function
+Vue$3.prototype.__patch__ = inBrowser ? patch$1 : noop;
+
+// wrap mount
+Vue$3.prototype.$mount = function (
+  el,
+  hydrating
+) {
+  el = el && inBrowser ? query(el) : undefined;
+  return this._mount(el, hydrating)
+};
+
+if ("development" !== 'production' &&
+    inBrowser && 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"
+  );
+}
+
+// devtools global hook
+/* istanbul ignore next */
+setTimeout(function () {
+  if (config.devtools) {
+    if (devtools) {
+      devtools.emit('init', Vue$3);
+    } else if (
+      "development" !== 'production' &&
+      inBrowser && !isEdge && /Chrome\/\d+/.test(window.navigator.userAgent)
+    ) {
+      console[console.info ? 'info' : 'log'](
+        'Download the Vue Devtools extension for a better development experience:\n' +
+        'https://github.com/vuejs/vue-devtools'
+      );
+    }
+  }
+}, 0);
+
+/*  */
+
+// check whether current browser encodes a char inside attribute values
+function shouldDecode (content, encoded) {
+  var div = document.createElement('div');
+  div.innerHTML = "<div a=\"" + content + "\">";
+  return div.innerHTML.indexOf(encoded) > 0
+}
+
+// #3663
+// IE encodes newlines inside attribute values while other browsers don't
+var shouldDecodeNewlines = inBrowser ? shouldDecode('\n', '&#10;') : false;
+
+/*  */
+
+var decoder;
+
+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',
+  true
+);
+
+// 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',
+  true
+);
+
+// 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',
+  true
+);
+
+/**
+ * Not type-checking this file because it's mostly vendor code.
+ */
+
+/*!
+ * HTML Parser By John Resig (ejohn.org)
+ * Modified by Juriy "kangax" Zaytsev
+ * Original code by Erik Arvidsson, Mozilla Public License
+ * http://erik.eae.net/simplehtmlparser/simplehtmlparser.js
+ */
+
+// Regular Expressions for parsing tags and attributes
+var singleAttrIdentifier = /([^\s"'<>/=]+)/;
+var singleAttrAssign = /(?:=)/;
+var singleAttrValues = [
+  // attr value double quotes
+  /"([^"]*)"+/.source,
+  // attr value, single quotes
+  /'([^']*)'+/.source,
+  // attr value, no quotes
+  /([^\s"'=<>`]+)/.source
+];
+var attribute = new RegExp(
+  '^\\s*' + singleAttrIdentifier.source +
+  '(?:\\s*(' + singleAttrAssign.source + ')' +
+  '\\s*(?:' + singleAttrValues.join('|') + '))?'
+);
+
+// could use https://www.w3.org/TR/1999/REC-xml-names-19990114/#NT-QName
+// but for Vue templates we can enforce a simple charset
+var ncname = '[a-zA-Z_][\\w\\-\\.]*';
+var qnameCapture = '((?:' + ncname + '\\:)?' + ncname + ')';
+var startTagOpen = new RegExp('^<' + qnameCapture);
+var startTagClose = /^\s*(\/?)>/;
+var endTag = new RegExp('^<\\/' + qnameCapture + '[^>]*>');
+var doctype = /^<!DOCTYPE [^>]+>/i;
+var comment = /^<!--/;
+var conditionalComment = /^<!\[/;
+
+var IS_REGEX_CAPTURING_BROKEN = false;
+'x'.replace(/x(.)?/g, function (m, g) {
+  IS_REGEX_CAPTURING_BROKEN = g === '';
+});
+
+// Special Elements (can contain anything)
+var isScriptOrStyle = makeMap('script,style', true);
+var reCache = {};
+
+var ltRE = /&lt;/g;
+var gtRE = /&gt;/g;
+var nlRE = /&#10;/g;
+var ampRE = /&amp;/g;
+var quoteRE = /&quot;/g;
+
+function decodeAttr (value, shouldDecodeNewlines) {
+  if (shouldDecodeNewlines) {
+    value = value.replace(nlRE, '\n');
+  }
+  return value
+    .replace(ltRE, '<')
+    .replace(gtRE, '>')
+    .replace(ampRE, '&')
+    .replace(quoteRE, '"')
+}
+
+function parseHTML (html, options) {
+  var stack = [];
+  var expectHTML = options.expectHTML;
+  var isUnaryTag$$1 = options.isUnaryTag || no;
+  var index = 0;
+  var last, lastTag;
+  while (html) {
+    last = html;
+    // Make sure we're not in a script or style element
+    if (!lastTag || !isScriptOrStyle(lastTag)) {
+      var textEnd = html.indexOf('<');
+      if (textEnd === 0) {
+        // Comment:
+        if (comment.test(html)) {
+          var commentEnd = html.indexOf('-->');
+
+          if (commentEnd >= 0) {
+            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);
+          continue
+        }
+      }
+
+      var text = (void 0), rest$1 = (void 0), next = (void 0);
+      if (textEnd > 0) {
+        rest$1 = html.slice(textEnd);
+        while (
+          !endTag.test(rest$1) &&
+          !startTagOpen.test(rest$1) &&
+          !comment.test(rest$1) &&
+          !conditionalComment.test(rest$1)
+        ) {
+          // < in plain text, be forgiving and treat it as text
+          next = rest$1.indexOf('<', 1);
+          if (next < 0) { break }
+          textEnd += next;
+          rest$1 = html.slice(textEnd);
+        }
+        text = html.substring(0, textEnd);
+        advance(textEnd);
+      }
+
+      if (textEnd < 0) {
+        text = html;
+        html = '';
+      }
+
+      if (options.chars && text) {
+        options.chars(text);
+      }
+    } else {
+      var stackedTag = lastTag.toLowerCase();
+      var reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)(</' + stackedTag + '[^>]*>)', 'i'));
+      var endTagLength = 0;
+      var rest = html.replace(reStackedTag, function (all, text, endTag) {
+        endTagLength = endTag.length;
+        if (stackedTag !== 'script' && stackedTag !== 'style' && stackedTag !== 'noscript') {
+          text = text
+            .replace(/<!--([\s\S]*?)-->/g, '$1')
+            .replace(/<!\[CDATA\[([\s\S]*?)]]>/g, '$1');
+        }
+        if (options.chars) {
+          options.chars(text);
+        }
+        return ''
+      });
+      index += html.length - rest.length;
+      html = rest;
+      parseEndTag(stackedTag, index - endTagLength, index);
+    }
+
+    if (html === last && options.chars) {
+      options.chars(html);
+      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(attribute))) {
+        advance(attr[0].length);
+        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(tagName) && lastTag === tagName) {
+        parseEndTag(tagName);
+      }
+    }
+
+    var unary = isUnaryTag$$1(tagName) || tagName === 'html' && lastTag === 'head' || !!unarySlash;
+
+    var l = match.attrs.length;
+    var attrs = new Array(l);
+    for (var i = 0; i < l; i++) {
+      var args = match.attrs[i];
+      // hackish work around FF bug https://bugzilla.mozilla.org/show_bug.cgi?id=369778
+      if (IS_REGEX_CAPTURING_BROKEN && args[0].indexOf('""') === -1) {
+        if (args[3] === '') { delete args[3]; }
+        if (args[4] === '') { delete args[4]; }
+        if (args[5] === '') { delete args[5]; }
+      }
+      var value = args[3] || args[4] || args[5] || '';
+      attrs[i] = {
+        name: args[1],
+        value: decodeAttr(
+          value,
+          options.shouldDecodeNewlines
+        )
+      };
+    }
+
+    if (!unary) {
+      stack.push({ tag: tagName, lowerCasedTag: tagName.toLowerCase(), attrs: attrs });
+      lastTag = tagName;
+      unarySlash = '';
+    }
+
+    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; }
+
+    if (tagName) {
+      lowerCasedTagName = tagName.toLowerCase();
+    }
+
+    // Find the closest opened tag of the same type
+    if (tagName) {
+      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 (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);
+      }
+    }
+  }
+}
+
+/*  */
+
+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 || !/[\w$]/.test(p)) {
+          inRegex = true;
+        }
+      }
+    }
+  }
+
+  if (expression === undefined) {
+    expression = exp.slice(0, i).trim();
+  } else if (lastFilterIndex !== 0) {
+    pushFilter();
+  }
+
+  function pushFilter () {
+    (filters || (filters = [])).push(exp.slice(lastFilterIndex, i).trim());
+    lastFilterIndex = i + 1;
+  }
+
+  if (filters) {
+    for (i = 0; i < filters.length; i++) {
+      expression = wrapFilter(expression, filters[i]);
+    }
+  }
+
+  return expression
+}
+
+function wrapFilter (exp, filter) {
+  var i = filter.indexOf('(');
+  if (i < 0) {
+    // _f: resolveFilter
+    return ("_f(\"" + filter + "\")(" + exp + ")")
+  } else {
+    var name = filter.slice(0, i);
+    var args = filter.slice(i + 1);
+    return ("_f(\"" + name + "\")(" + exp + "," + args)
+  }
+}
+
+/*  */
+
+var defaultTagRE = /\{\{((?:.|\n)+?)\}\}/g;
+var regexEscapeRE = /[-.*+?^${}()|[\]\/\\]/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 lastIndex = tagRE.lastIndex = 0;
+  var match, index;
+  while ((match = tagRE.exec(text))) {
+    index = match.index;
+    // push text token
+    if (index > lastIndex) {
+      tokens.push(JSON.stringify(text.slice(lastIndex, index)));
+    }
+    // tag token
+    var exp = parseFilters(match[1].trim());
+    tokens.push(("_s(" + exp + ")"));
+    lastIndex = index + match[0].length;
+  }
+  if (lastIndex < text.length) {
+    tokens.push(JSON.stringify(text.slice(lastIndex)));
+  }
+  return tokens.join('+')
+}
+
+/*  */
+
+function baseWarn (msg) {
+  console.error(("[Vue parser]: " + msg));
+}
+
+function pluckModuleFunction (
+  modules,
+  key
+) {
+  return modules
+    ? modules.map(function (m) { return m[key]; }).filter(function (_) { return _; })
+    : []
+}
+
+function addProp (el, name, value) {
+  (el.props || (el.props = [])).push({ name: name, value: value });
+}
+
+function addAttr (el, name, value) {
+  (el.attrs || (el.attrs = [])).push({ name: name, value: value });
+}
+
+function addDirective (
+  el,
+  name,
+  rawName,
+  value,
+  arg,
+  modifiers
+) {
+  (el.directives || (el.directives = [])).push({ name: name, rawName: rawName, value: value, arg: arg, modifiers: modifiers });
+}
+
+function addHandler (
+  el,
+  name,
+  value,
+  modifiers,
+  important
+) {
+  // check capture modifier
+  if (modifiers && modifiers.capture) {
+    delete modifiers.capture;
+    name = '!' + name; // mark the event as captured
+  }
+  if (modifiers && modifiers.once) {
+    delete modifiers.once;
+    name = '~' + name; // mark the event as once
+  }
+  var events;
+  if (modifiers && modifiers.native) {
+    delete modifiers.native;
+    events = el.nativeEvents || (el.nativeEvents = {});
+  } else {
+    events = el.events || (el.events = {});
+  }
+  var newHandler = { value: value, 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;
+  }
+}
+
+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)
+    }
+  }
+}
+
+function getAndRemoveAttr (el, name) {
+  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
+      }
+    }
+  }
+  return val
+}
+
+var len;
+var str;
+var chr;
+var index$1;
+var expressionPos;
+var expressionEndPos;
+
+/**
+ * parse directive model to do the array update transform. a[idx] = val => $$a.splice($$idx, 1, val)
+ *
+ * for loop possible cases:
+ *
+ * - test
+ * - test[idx]
+ * - test[test1[idx]]
+ * - test["a"][idx]
+ * - xxx.test[a[a].test1[idx]]
+ * - test.xxx.a["asa"][test1[idx]]
+ *
+ */
+
+function parseModel (val) {
+  str = val;
+  len = str.length;
+  index$1 = expressionPos = expressionEndPos = 0;
+
+  if (val.indexOf('[') < 0 || val.lastIndexOf(']') < len - 1) {
+    return {
+      exp: val,
+      idx: null
+    }
+  }
+
+  while (!eof()) {
+    chr = next();
+    /* istanbul ignore if */
+    if (isStringStart(chr)) {
+      parseString(chr);
+    } else if (chr === 0x5B) {
+      parseBracket(chr);
+    }
+  }
+
+  return {
+    exp: val.substring(0, expressionPos),
+    idx: val.substring(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 dirRE = /^v-|^@|^:/;
+var forAliasRE = /(.*?)\s+(?:in|of)\s+(.*)/;
+var forIteratorRE = /\((\{[^}]*\}|[^,]*),([^,]*)(?:,([^,]*))?\)/;
+var bindRE = /^:|^v-bind:/;
+var onRE = /^@|^v-on:/;
+var argRE = /:(.*)$/;
+var modifierRE = /\.[^.]+/g;
+
+var decodeHTMLCached = cached(decode);
+
+// configurable state
+var warn$1;
+var platformGetTagNamespace;
+var platformMustUseProp;
+var platformIsPreTag;
+var preTransforms;
+var transforms;
+var postTransforms;
+var delimiters;
+
+/**
+ * Convert HTML string to AST.
+ */
+function parse (
+  template,
+  options
+) {
+  warn$1 = options.warn || baseWarn;
+  platformGetTagNamespace = options.getTagNamespace || no;
+  platformMustUseProp = options.mustUseProp || no;
+  platformIsPreTag = options.isPreTag || no;
+  preTransforms = pluckModuleFunction(options.modules, 'preTransformNode');
+  transforms = pluckModuleFunction(options.modules, 'transformNode');
+  postTransforms = pluckModuleFunction(options.modules, 'postTransformNode');
+  delimiters = options.delimiters;
+  var stack = [];
+  var preserveWhitespace = options.preserveWhitespace !== false;
+  var root;
+  var currentParent;
+  var inVPre = false;
+  var inPre = false;
+  var warned = false;
+  parseHTML(template, {
+    expectHTML: options.expectHTML,
+    isUnaryTag: options.isUnaryTag,
+    shouldDecodeNewlines: options.shouldDecodeNewlines,
+    start: function start (tag, attrs, unary) {
+      // 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 = {
+        type: 1,
+        tag: tag,
+        attrsList: attrs,
+        attrsMap: makeAttrsMap(attrs),
+        parent: currentParent,
+        children: []
+      };
+      if (ns) {
+        element.ns = ns;
+      }
+
+      if (isForbiddenTag(element) && !isServerRendering()) {
+        element.forbidden = true;
+        "development" !== 'production' && warn$1(
+          '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.'
+        );
+      }
+
+      // apply pre-transforms
+      for (var i = 0; i < preTransforms.length; i++) {
+        preTransforms[i](element, options);
+      }
+
+      if (!inVPre) {
+        processPre(element);
+        if (element.pre) {
+          inVPre = true;
+        }
+      }
+      if (platformIsPreTag(element.tag)) {
+        inPre = true;
+      }
+      if (inVPre) {
+        processRawAttrs(element);
+      } else {
+        processFor(element);
+        processIf(element);
+        processOnce(element);
+        processKey(element);
+
+        // determine whether this is a plain element after
+        // removing structural attributes
+        element.plain = !element.key && !attrs.length;
+
+        processRef(element);
+        processSlot(element);
+        processComponent(element);
+        for (var i$1 = 0; i$1 < transforms.length; i$1++) {
+          transforms[i$1](element, options);
+        }
+        processAttrs(element);
+      }
+
+      function checkRootConstraints (el) {
+        if ("development" !== 'production' && !warned) {
+          if (el.tag === 'slot' || el.tag === 'template') {
+            warned = true;
+            warn$1(
+              "Cannot use <" + (el.tag) + "> as component root element because it may " +
+              'contain multiple nodes:\n' + template
+            );
+          }
+          if (el.attrsMap.hasOwnProperty('v-for')) {
+            warned = true;
+            warn$1(
+              'Cannot use v-for on stateful component root element because ' +
+              'it renders multiple elements:\n' + template
+            );
+          }
+        }
+      }
+
+      // tree management
+      if (!root) {
+        root = element;
+        checkRootConstraints(root);
+      } else if (!stack.length) {
+        // 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 if ("development" !== 'production' && !warned) {
+          warned = true;
+          warn$1(
+            "Component template should contain exactly one root element:" +
+            "\n\n" + template + "\n\n" +
+            "If you are using v-if on multiple elements, " +
+            "use v-else-if to chain them instead."
+          );
+        }
+      }
+      if (currentParent && !element.forbidden) {
+        if (element.elseif || element.else) {
+          processIfConditions(element, currentParent);
+        } else if (element.slotScope) { // scoped slot
+          currentParent.plain = false;
+          var name = element.slotTarget || 'default';(currentParent.scopedSlots || (currentParent.scopedSlots = {}))[name] = element;
+        } else {
+          currentParent.children.push(element);
+          element.parent = currentParent;
+        }
+      }
+      if (!unary) {
+        currentParent = element;
+        stack.push(element);
+      }
+      // apply post-transforms
+      for (var i$2 = 0; i$2 < postTransforms.length; i$2++) {
+        postTransforms[i$2](element, options);
+      }
+    },
+
+    end: function end () {
+      // remove trailing whitespace
+      var element = stack[stack.length - 1];
+      var lastNode = element.children[element.children.length - 1];
+      if (lastNode && lastNode.type === 3 && lastNode.text === ' ') {
+        element.children.pop();
+      }
+      // pop stack
+      stack.length -= 1;
+      currentParent = stack[stack.length - 1];
+      // check pre state
+      if (element.pre) {
+        inVPre = false;
+      }
+      if (platformIsPreTag(element.tag)) {
+        inPre = false;
+      }
+    },
+
+    chars: function chars (text) {
+      if (!currentParent) {
+        if ("development" !== 'production' && !warned && text === template) {
+          warned = true;
+          warn$1(
+            'Component template requires a root element, rather than just text:\n\n' + template
+          );
+        }
+        return
+      }
+      // IE textarea placeholder bug
+      /* istanbul ignore if */
+      if (isIE &&
+          currentParent.tag === 'textarea' &&
+          currentParent.attrsMap.placeholder === text) {
+        return
+      }
+      var children = currentParent.children;
+      text = inPre || text.trim()
+        ? decodeHTMLCached(text)
+        // only preserve whitespace if its not right after a starting tag
+        : preserveWhitespace && children.length ? ' ' : '';
+      if (text) {
+        var expression;
+        if (!inVPre && text !== ' ' && (expression = parseText(text, delimiters))) {
+          children.push({
+            type: 2,
+            expression: expression,
+            text: text
+          });
+        } else if (text !== ' ' || children[children.length - 1].text !== ' ') {
+          currentParent.children.push({
+            type: 3,
+            text: text
+          });
+        }
+      }
+    }
+  });
+  return root
+}
+
+function processPre (el) {
+  if (getAndRemoveAttr(el, 'v-pre') != null) {
+    el.pre = true;
+  }
+}
+
+function processRawAttrs (el) {
+  var l = el.attrsList.length;
+  if (l) {
+    var attrs = el.attrs = new Array(l);
+    for (var i = 0; i < l; i++) {
+      attrs[i] = {
+        name: el.attrsList[i].name,
+        value: JSON.stringify(el.attrsList[i].value)
+      };
+    }
+  } else if (!el.pre) {
+    // non root node in pre blocks with no attributes
+    el.plain = true;
+  }
+}
+
+function processKey (el) {
+  var exp = getBindingAttr(el, 'key');
+  if (exp) {
+    if ("development" !== 'production' && el.tag === 'template') {
+      warn$1("<template> cannot be keyed. Place the key on real elements instead.");
+    }
+    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 inMatch = exp.match(forAliasRE);
+    if (!inMatch) {
+      "development" !== 'production' && warn$1(
+        ("Invalid v-for expression: " + exp)
+      );
+      return
+    }
+    el.for = inMatch[2].trim();
+    var alias = inMatch[1].trim();
+    var iteratorMatch = alias.match(forIteratorRE);
+    if (iteratorMatch) {
+      el.alias = iteratorMatch[1].trim();
+      el.iterator1 = iteratorMatch[2].trim();
+      if (iteratorMatch[3]) {
+        el.iterator2 = iteratorMatch[3].trim();
+      }
+    } else {
+      el.alias = alias;
+    }
+  }
+}
+
+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$1(
+      "v-" + (el.elseif ? ('else-if="' + el.elseif + '"') : 'else') + " " +
+      "used on element <" + (el.tag) + "> without corresponding v-if."
+    );
+  }
+}
+
+function findPrevElement (children) {
+  var i = children.length;
+  while (i--) {
+    if (children[i].type === 1) {
+      return children[i]
+    } else {
+      if ("development" !== 'production' && children[i].text !== ' ') {
+        warn$1(
+          "text \"" + (children[i].text.trim()) + "\" between v-if and v-else(-if) " +
+          "will be ignored."
+        );
+      }
+      children.pop();
+    }
+  }
+}
+
+function addIfCondition (el, condition) {
+  if (!el.ifConditions) {
+    el.ifConditions = [];
+  }
+  el.ifConditions.push(condition);
+}
+
+function processOnce (el) {
+  var once = getAndRemoveAttr(el, 'v-once');
+  if (once != null) {
+    el.once = true;
+  }
+}
+
+function processSlot (el) {
+  if (el.tag === 'slot') {
+    el.slotName = getBindingAttr(el, 'name');
+    if ("development" !== 'production' && el.key) {
+      warn$1(
+        "`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."
+      );
+    }
+  } else {
+    var slotTarget = getBindingAttr(el, 'slot');
+    if (slotTarget) {
+      el.slotTarget = slotTarget === '""' ? '"default"' : slotTarget;
+    }
+    if (el.tag === 'template') {
+      el.slotScope = getAndRemoveAttr(el, 'scope');
+    }
+  }
+}
+
+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, arg, modifiers, isProp;
+  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);
+      if (modifiers) {
+        name = name.replace(modifierRE, '');
+      }
+      if (bindRE.test(name)) { // v-bind
+        name = name.replace(bindRE, '');
+        value = parseFilters(value);
+        isProp = false;
+        if (modifiers) {
+          if (modifiers.prop) {
+            isProp = true;
+            name = camelize(name);
+            if (name === 'innerHtml') { name = 'innerHTML'; }
+          }
+          if (modifiers.camel) {
+            name = camelize(name);
+          }
+        }
+        if (isProp || platformMustUseProp(el.tag, el.attrsMap.type, name)) {
+          addProp(el, name, value);
+        } else {
+          addAttr(el, name, value);
+        }
+      } else if (onRE.test(name)) { // v-on
+        name = name.replace(onRE, '');
+        addHandler(el, name, value, modifiers);
+      } else { // normal directives
+        name = name.replace(dirRE, '');
+        // parse arg
+        var argMatch = name.match(argRE);
+        if (argMatch && (arg = argMatch[1])) {
+          name = name.slice(0, -(arg.length + 1));
+        }
+        addDirective(el, name, rawName, value, arg, modifiers);
+        if ("development" !== 'production' && name === 'model') {
+          checkForAliasModel(el, value);
+        }
+      }
+    } else {
+      // literal attribute
+      {
+        var expression = parseText(value, delimiters);
+        if (expression) {
+          warn$1(
+            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">.'
+          );
+        }
+      }
+      addAttr(el, name, JSON.stringify(value));
+    }
+  }
+}
+
+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 ("development" !== 'production' && map[attrs[i].name] && !isIE) {
+      warn$1('duplicate attribute: ' + attrs[i].name);
+    }
+    map[attrs[i].name] = attrs[i].value;
+  }
+  return map
+}
+
+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$1(
+        "<" + (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 = _el.parent;
+  }
+}
+
+/*  */
+
+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(root);
+  // second pass: mark static roots.
+  markStaticRoots(root, false);
+}
+
+function genStaticKeys$1 (keys) {
+  return makeMap(
+    'type,tag,attrsList,attrsMap,plain,parent,children,attrs' +
+    (keys ? ',' + keys : '')
+  )
+}
+
+function markStatic (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(child);
+      if (!child.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) {
+      walkThroughConditionsBlocks(node.ifConditions, isInFor);
+    }
+  }
+}
+
+function walkThroughConditionsBlocks (conditionBlocks, isInFor) {
+  for (var i = 1, len = conditionBlocks.length; i < len; i++) {
+    markStaticRoots(conditionBlocks[i].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 = /^\s*([\w$_]+|\([^)]*?\))\s*=>|^function\s*\(/;
+var simplePathRE = /^\s*[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['.*?']|\[".*?"]|\[\d+]|\[[A-Za-z_$][\w$]*])*\s*$/;
+
+// keyCode aliases
+var keyCodes = {
+  esc: 27,
+  tab: 9,
+  enter: 13,
+  space: 32,
+  up: 38,
+  left: 37,
+  right: 39,
+  down: 40,
+  'delete': [8, 46]
+};
+
+var modifierCode = {
+  stop: '$event.stopPropagation();',
+  prevent: '$event.preventDefault();',
+  self: 'if($event.target !== $event.currentTarget)return;',
+  ctrl: 'if(!$event.ctrlKey)return;',
+  shift: 'if(!$event.shiftKey)return;',
+  alt: 'if(!$event.altKey)return;',
+  meta: 'if(!$event.metaKey)return;'
+};
+
+function genHandlers (events, native) {
+  var res = native ? 'nativeOn:{' : 'on:{';
+  for (var name in events) {
+    res += "\"" + name + "\":" + (genHandler(name, events[name])) + ",";
+  }
+  return res.slice(0, -1) + '}'
+}
+
+function genHandler (
+  name,
+  handler
+) {
+  if (!handler) {
+    return 'function(){}'
+  } else if (Array.isArray(handler)) {
+    return ("[" + (handler.map(function (handler) { return genHandler(name, handler); }).join(',')) + "]")
+  } else if (!handler.modifiers) {
+    return fnExpRE.test(handler.value) || simplePathRE.test(handler.value)
+      ? handler.value
+      : ("function($event){" + (handler.value) + "}")
+  } else {
+    var code = '';
+    var keys = [];
+    for (var key in handler.modifiers) {
+      if (modifierCode[key]) {
+        code += modifierCode[key];
+      } else {
+        keys.push(key);
+      }
+    }
+    if (keys.length) {
+      code = genKeyFilter(keys) + code;
+    }
+    var handlerCode = simplePathRE.test(handler.value)
+      ? handler.value + '($event)'
+      : handler.value;
+    return 'function($event){' + code + handlerCode + '}'
+  }
+}
+
+function genKeyFilter (keys) {
+  return ("if(" + (keys.map(genFilterCode).join('&&')) + ")return;")
+}
+
+function genFilterCode (key) {
+  var keyVal = parseInt(key, 10);
+  if (keyVal) {
+    return ("$event.keyCode!==" + keyVal)
+  }
+  var alias = keyCodes[key];
+  return ("_k($event.keyCode," + (JSON.stringify(key)) + (alias ? ',' + JSON.stringify(alias) : '') + ")")
+}
+
+/*  */
+
+function bind$2 (el, dir) {
+  el.wrapData = function (code) {
+    return ("_b(" + code + ",'" + (el.tag) + "'," + (dir.value) + (dir.modifiers && dir.modifiers.prop ? ',true' : '') + ")")
+  };
+}
+
+/*  */
+
+var baseDirectives = {
+  bind: bind$2,
+  cloak: noop
+};
+
+/*  */
+
+// configurable state
+var warn$2;
+var transforms$1;
+var dataGenFns;
+var platformDirectives$1;
+var isPlatformReservedTag$1;
+var staticRenderFns;
+var onceCount;
+var currentOptions;
+
+function generate (
+  ast,
+  options
+) {
+  // save previous staticRenderFns so generate calls can be nested
+  var prevStaticRenderFns = staticRenderFns;
+  var currentStaticRenderFns = staticRenderFns = [];
+  var prevOnceCount = onceCount;
+  onceCount = 0;
+  currentOptions = options;
+  warn$2 = options.warn || baseWarn;
+  transforms$1 = pluckModuleFunction(options.modules, 'transformCode');
+  dataGenFns = pluckModuleFunction(options.modules, 'genData');
+  platformDirectives$1 = options.directives || {};
+  isPlatformReservedTag$1 = options.isReservedTag || no;
+  var code = ast ? genElement(ast) : '_c("div")';
+  staticRenderFns = prevStaticRenderFns;
+  onceCount = prevOnceCount;
+  return {
+    render: ("with(this){return " + code + "}"),
+    staticRenderFns: currentStaticRenderFns
+  }
+}
+
+function genElement (el) {
+  if (el.staticRoot && !el.staticProcessed) {
+    return genStatic(el)
+  } else if (el.once && !el.onceProcessed) {
+    return genOnce(el)
+  } else if (el.for && !el.forProcessed) {
+    return genFor(el)
+  } else if (el.if && !el.ifProcessed) {
+    return genIf(el)
+  } else if (el.tag === 'template' && !el.slotTarget) {
+    return genChildren(el) || 'void 0'
+  } else if (el.tag === 'slot') {
+    return genSlot(el)
+  } else {
+    // component or element
+    var code;
+    if (el.component) {
+      code = genComponent(el.component, el);
+    } else {
+      var data = el.plain ? undefined : genData(el);
+
+      var children = el.inlineTemplate ? null : genChildren(el, true);
+      code = "_c('" + (el.tag) + "'" + (data ? ("," + data) : '') + (children ? ("," + children) : '') + ")";
+    }
+    // module transforms
+    for (var i = 0; i < transforms$1.length; i++) {
+      code = transforms$1[i](el, code);
+    }
+    return code
+  }
+}
+
+// hoist static sub-trees out
+function genStatic (el) {
+  el.staticProcessed = true;
+  staticRenderFns.push(("with(this){return " + (genElement(el)) + "}"));
+  return ("_m(" + (staticRenderFns.length - 1) + (el.staticInFor ? ',true' : '') + ")")
+}
+
+// v-once
+function genOnce (el) {
+  el.onceProcessed = true;
+  if (el.if && !el.ifProcessed) {
+    return genIf(el)
+  } else if (el.staticInFor) {
+    var key = '';
+    var parent = el.parent;
+    while (parent) {
+      if (parent.for) {
+        key = parent.key;
+        break
+      }
+      parent = parent.parent;
+    }
+    if (!key) {
+      "development" !== 'production' && warn$2(
+        "v-once can only be used inside v-for that is keyed. "
+      );
+      return genElement(el)
+    }
+    return ("_o(" + (genElement(el)) + "," + (onceCount++) + (key ? ("," + key) : "") + ")")
+  } else {
+    return genStatic(el)
+  }
+}
+
+function genIf (el) {
+  el.ifProcessed = true; // avoid recursion
+  return genIfConditions(el.ifConditions.slice())
+}
+
+function genIfConditions (conditions) {
+  if (!conditions.length) {
+    return '_e()'
+  }
+
+  var condition = conditions.shift();
+  if (condition.exp) {
+    return ("(" + (condition.exp) + ")?" + (genTernaryExp(condition.block)) + ":" + (genIfConditions(conditions)))
+  } else {
+    return ("" + (genTernaryExp(condition.block)))
+  }
+
+  // v-if with v-once should generate code like (a)?_m(0):_m(1)
+  function genTernaryExp (el) {
+    return el.once ? genOnce(el) : genElement(el)
+  }
+}
+
+function genFor (el) {
+  var exp = el.for;
+  var alias = el.alias;
+  var iterator1 = el.iterator1 ? ("," + (el.iterator1)) : '';
+  var iterator2 = el.iterator2 ? ("," + (el.iterator2)) : '';
+  el.forProcessed = true; // avoid recursion
+  return "_l((" + exp + ")," +
+    "function(" + alias + iterator1 + iterator2 + "){" +
+      "return " + (genElement(el)) +
+    '})'
+}
+
+function genData (el) {
+  var data = '{';
+
+  // directives first.
+  // directives may mutate the el's other properties before they are generated.
+  var dirs = genDirectives(el);
+  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 < dataGenFns.length; i++) {
+    data += 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)) + ",";
+  }
+  if (el.nativeEvents) {
+    data += (genHandlers(el.nativeEvents, true)) + ",";
+  }
+  // slot target
+  if (el.slotTarget) {
+    data += "slot:" + (el.slotTarget) + ",";
+  }
+  // scoped slots
+  if (el.scopedSlots) {
+    data += (genScopedSlots(el.scopedSlots)) + ",";
+  }
+  // inline-template
+  if (el.inlineTemplate) {
+    var inlineTemplate = genInlineTemplate(el);
+    if (inlineTemplate) {
+      data += inlineTemplate + ",";
+    }
+  }
+  data = data.replace(/,$/, '') + '}';
+  // v-bind data wrap
+  if (el.wrapData) {
+    data = el.wrapData(data);
+  }
+  return data
+}
+
+function genDirectives (el) {
+  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 = platformDirectives$1[dir.name] || baseDirectives[dir.name];
+    if (gen) {
+      // compile-time directive that manipulates AST.
+      // returns true if it also needs a runtime counterpart.
+      needRuntime = !!gen(el, dir, warn$2);
+    }
+    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.arg) + "\"") : '') + (dir.modifiers ? (",modifiers:" + (JSON.stringify(dir.modifiers))) : '') + "},";
+    }
+  }
+  if (hasRuntime) {
+    return res.slice(0, -1) + ']'
+  }
+}
+
+function genInlineTemplate (el) {
+  var ast = el.children[0];
+  if ("development" !== 'production' && (
+    el.children.length > 1 || ast.type !== 1
+  )) {
+    warn$2('Inline-template components must have exactly one child element.');
+  }
+  if (ast.type === 1) {
+    var inlineRenderFns = generate(ast, currentOptions);
+    return ("inlineTemplate:{render:function(){" + (inlineRenderFns.render) + "},staticRenderFns:[" + (inlineRenderFns.staticRenderFns.map(function (code) { return ("function(){" + code + "}"); }).join(',')) + "]}")
+  }
+}
+
+function genScopedSlots (slots) {
+  return ("scopedSlots:{" + (Object.keys(slots).map(function (key) { return genScopedSlot(key, slots[key]); }).join(',')) + "}")
+}
+
+function genScopedSlot (key, el) {
+  return key + ":function(" + (String(el.attrsMap.scope)) + "){" +
+    "return " + (el.tag === 'template'
+      ? genChildren(el) || 'void 0'
+      : genElement(el)) + "}"
+}
+
+function genChildren (el, checkSkip) {
+  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') {
+      return genElement(el$1)
+    }
+    var normalizationType = getNormalizationType(children);
+    return ("[" + (children.map(genNode).join(',')) + "]" + (checkSkip
+        ? normalizationType ? ("," + normalizationType) : ''
+        : ''))
+  }
+}
+
+// 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) {
+  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 maybeComponent (el) {
+  return !isPlatformReservedTag$1(el.tag)
+}
+
+function genNode (node) {
+  if (node.type === 1) {
+    return genElement(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 genSlot (el) {
+  var slotName = el.slotName || '"default"';
+  var children = genChildren(el);
+  var res = "_t(" + slotName + (children ? ("," + children) : '');
+  var attrs = el.attrs && ("{" + (el.attrs.map(function (a) { return ((camelize(a.name)) + ":" + (a.value)); }).join(',')) + "}");
+  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) {
+  var children = el.inlineTemplate ? null : genChildren(el, true);
+  return ("_c(" + componentName + "," + (genData(el)) + (children ? ("," + children) : '') + ")")
+}
+
+function genProps (props) {
+  var res = '';
+  for (var i = 0; i < props.length; i++) {
+    var prop = props[i];
+    res += "\"" + (prop.name) + "\":" + (transformSpecialNewlines(prop.value)) + ",";
+  }
+  return res.slice(0, -1)
+}
+
+// #3895, #4268
+function transformSpecialNewlines (text) {
+  return text
+    .replace(/\u2028/g, '\\u2028')
+    .replace(/\u2029/g, '\\u2029')
+}
+
+/*  */
+
+/**
+ * Compile a template.
+ */
+function compile$1 (
+  template,
+  options
+) {
+  var ast = parse(template.trim(), options);
+  optimize(ast, options);
+  var code = generate(ast, options);
+  return {
+    ast: ast,
+    render: code.render,
+    staticRenderFns: code.staticRenderFns
+  }
+}
+
+/*  */
+
+// operators like typeof, instanceof and in are allowed
+var prohibitedKeywordRE = new RegExp('\\b' + (
+  'do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const,' +
+  'super,throw,while,yield,delete,export,import,return,switch,default,' +
+  'extends,finally,continue,debugger,function,arguments'
+).split(',').join('\\b|\\b') + '\\b');
+// check valid identifier for v-for
+var identRE = /[A-Za-z_$][\w$]*/;
+// strip strings in expressions
+var stripStringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g;
+
+// detect problematic expressions in a template
+function detectErrors (ast) {
+  var errors = [];
+  if (ast) {
+    checkNode(ast, errors);
+  }
+  return errors
+}
+
+function checkNode (node, errors) {
+  if (node.type === 1) {
+    for (var name in node.attrsMap) {
+      if (dirRE.test(name)) {
+        var value = node.attrsMap[name];
+        if (value) {
+          if (name === 'v-for') {
+            checkFor(node, ("v-for=\"" + value + "\""), errors);
+          } else {
+            checkExpression(value, (name + "=\"" + value + "\""), errors);
+          }
+        }
+      }
+    }
+    if (node.children) {
+      for (var i = 0; i < node.children.length; i++) {
+        checkNode(node.children[i], errors);
+      }
+    }
+  } else if (node.type === 2) {
+    checkExpression(node.expression, node.text, errors);
+  }
+}
+
+function checkFor (node, text, errors) {
+  checkExpression(node.for || '', text, errors);
+  checkIdentifier(node.alias, 'v-for alias', text, errors);
+  checkIdentifier(node.iterator1, 'v-for iterator', text, errors);
+  checkIdentifier(node.iterator2, 'v-for iterator', text, errors);
+}
+
+function checkIdentifier (ident, type, text, errors) {
+  if (typeof ident === 'string' && !identRE.test(ident)) {
+    errors.push(("- invalid " + type + " \"" + ident + "\" in expression: " + text));
+  }
+}
+
+function checkExpression (exp, text, errors) {
+  try {
+    new Function(("return " + exp));
+  } catch (e) {
+    var keywordMatch = exp.replace(stripStringRE, '').match(prohibitedKeywordRE);
+    if (keywordMatch) {
+      errors.push(
+        "- avoid using JavaScript keyword as property name: " +
+        "\"" + (keywordMatch[0]) + "\" in expression " + text
+      );
+    } else {
+      errors.push(("- invalid expression: " + text));
+    }
+  }
+}
+
+/*  */
+
+function transformNode (el, options) {
+  var warn = options.warn || baseWarn;
+  var staticClass = getAndRemoveAttr(el, 'class');
+  if ("development" !== 'production' && staticClass) {
+    var expression = parseText(staticClass, options.delimiters);
+    if (expression) {
+      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">.'
+      );
+    }
+  }
+  if (staticClass) {
+    el.staticClass = JSON.stringify(staticClass);
+  }
+  var classBinding = getBindingAttr(el, 'class', false /* getStatic */);
+  if (classBinding) {
+    el.classBinding = classBinding;
+  }
+}
+
+function genData$1 (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$1
+};
+
+/*  */
+
+function transformNode$1 (el, options) {
+  var warn = options.warn || baseWarn;
+  var staticStyle = getAndRemoveAttr(el, 'style');
+  if (staticStyle) {
+    /* istanbul ignore if */
+    {
+      var expression = parseText(staticStyle, options.delimiters);
+      if (expression) {
+        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.staticStyle = JSON.stringify(parseStyleText(staticStyle));
+  }
+
+  var styleBinding = getBindingAttr(el, 'style', false /* getStatic */);
+  if (styleBinding) {
+    el.styleBinding = styleBinding;
+  }
+}
+
+function genData$2 (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$2
+};
+
+var modules$1 = [
+  klass$1,
+  style$1
+];
+
+/*  */
+
+var warn$3;
+
+function model$1 (
+  el,
+  dir,
+  _warn
+) {
+  warn$3 = _warn;
+  var value = dir.value;
+  var modifiers = dir.modifiers;
+  var tag = el.tag;
+  var type = el.attrsMap.type;
+  {
+    var dynamicType = el.attrsMap['v-bind:type'] || el.attrsMap[':type'];
+    if (tag === 'input' && dynamicType) {
+      warn$3(
+        "<input :type=\"" + dynamicType + "\" v-model=\"" + value + "\">:\n" +
+        "v-model does not support dynamic input types. Use v-if branches instead."
+      );
+    }
+  }
+  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 {
+    genDefaultModel(el, value, modifiers);
+  }
+  // ensure runtime directive metadata
+  return true
+}
+
+function genCheckboxModel (
+  el,
+  value,
+  modifiers
+) {
+  if ("development" !== 'production' &&
+    el.attrsMap.checked != null) {
+    warn$3(
+      "<" + (el.tag) + " v-model=\"" + value + "\" checked>:\n" +
+      "inline checked attributes will be ignored when using v-model. " +
+      'Declare initial values in the component\'s data option instead.'
+    );
+  }
+  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, 'click',
+    "var $$a=" + value + "," +
+        '$$el=$event.target,' +
+        "$$c=$$el.checked?(" + trueValueBinding + "):(" + falseValueBinding + ");" +
+    'if(Array.isArray($$a)){' +
+      "var $$v=" + (number ? '_n(' + valueBinding + ')' : valueBinding) + "," +
+          '$$i=_i($$a,$$v);' +
+      "if($$c){$$i<0&&(" + value + "=$$a.concat($$v))}" +
+      "else{$$i>-1&&(" + value + "=$$a.slice(0,$$i).concat($$a.slice($$i+1)))}" +
+    "}else{" + value + "=$$c}",
+    null, true
+  );
+}
+
+function genRadioModel (
+    el,
+    value,
+    modifiers
+) {
+  if ("development" !== 'production' &&
+    el.attrsMap.checked != null) {
+    warn$3(
+      "<" + (el.tag) + " v-model=\"" + value + "\" checked>:\n" +
+      "inline checked attributes will be ignored when using v-model. " +
+      'Declare initial values in the component\'s data option instead.'
+    );
+  }
+  var number = modifiers && modifiers.number;
+  var valueBinding = getBindingAttr(el, 'value') || 'null';
+  valueBinding = number ? ("_n(" + valueBinding + ")") : valueBinding;
+  addProp(el, 'checked', ("_q(" + value + "," + valueBinding + ")"));
+  addHandler(el, 'click', genAssignmentCode(value, valueBinding), null, true);
+}
+
+function genDefaultModel (
+  el,
+  value,
+  modifiers
+) {
+  {
+    if (el.tag === 'input' && el.attrsMap.value) {
+      warn$3(
+        "<" + (el.tag) + " v-model=\"" + value + "\" value=\"" + (el.attrsMap.value) + "\">:\n" +
+        'inline value attributes will be ignored when using v-model. ' +
+        'Declare initial values in the component\'s data option instead.'
+      );
+    }
+    if (el.tag === 'textarea' && el.children.length) {
+      warn$3(
+        "<textarea v-model=\"" + value + "\">:\n" +
+        'inline content inside <textarea> will be ignored when using v-model. ' +
+        'Declare initial values in the component\'s data option instead.'
+      );
+    }
+  }
+
+  var type = el.attrsMap.type;
+  var ref = modifiers || {};
+  var lazy = ref.lazy;
+  var number = ref.number;
+  var trim = ref.trim;
+  var event = lazy || (isIE && type === 'range') ? 'change' : 'input';
+  var needCompositionGuard = !lazy && type !== 'range';
+  var isNative = el.tag === 'input' || el.tag === 'textarea';
+
+  var valueExpression = isNative
+    ? ("$event.target.value" + (trim ? '.trim()' : ''))
+    : trim ? "(typeof $event === 'string' ? $event.trim() : $event)" : "$event";
+  valueExpression = number || type === 'number'
+    ? ("_n(" + valueExpression + ")")
+    : valueExpression;
+
+  var code = genAssignmentCode(value, valueExpression);
+  if (isNative && needCompositionGuard) {
+    code = "if($event.target.composing)return;" + code;
+  }
+
+  // inputs with type="file" are read only and setting the input's
+  // value will throw an error.
+  if ("development" !== 'production' &&
+      type === 'file') {
+    warn$3(
+      "<" + (el.tag) + " v-model=\"" + value + "\" type=\"file\">:\n" +
+      "File inputs are read only. Use a v-on:change listener instead."
+    );
+  }
+
+  addProp(el, 'value', isNative ? ("_s(" + value + ")") : ("(" + value + ")"));
+  addHandler(el, event, code, null, true);
+  if (trim || number || type === 'number') {
+    addHandler(el, 'blur', '$forceUpdate()');
+  }
+}
+
+function genSelect (
+    el,
+    value,
+    modifiers
+) {
+  {
+    el.children.some(checkOptionWarning);
+  }
+
+  var number = modifiers && modifiers.number;
+  var assignment = "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') + "})" +
+    (el.attrsMap.multiple == null ? '[0]' : '');
+
+  var code = genAssignmentCode(value, assignment);
+  addHandler(el, 'change', code, null, true);
+}
+
+function checkOptionWarning (option) {
+  if (option.type === 1 &&
+    option.tag === 'option' &&
+    option.attrsMap.selected != null) {
+    warn$3(
+      "<select v-model=\"" + (option.parent.attrsMap['v-model']) + "\">:\n" +
+      'inline selected attributes on <option> will be ignored when using v-model. ' +
+      'Declare initial values in the component\'s data option instead.'
+    );
+    return true
+  }
+  return false
+}
+
+function genAssignmentCode (value, assignment) {
+  var modelRs = parseModel(value);
+  if (modelRs.idx === null) {
+    return (value + "=" + assignment)
+  } else {
+    return "var $$exp = " + (modelRs.exp) + ", $$idx = " + (modelRs.idx) + ";" +
+      "if (!Array.isArray($$exp)){" +
+        value + "=" + assignment + "}" +
+      "else{$$exp.splice($$idx, 1, " + assignment + ")}"
+  }
+}
+
+/*  */
+
+function text (el, dir) {
+  if (dir.value) {
+    addProp(el, 'textContent', ("_s(" + (dir.value) + ")"));
+  }
+}
+
+/*  */
+
+function html (el, dir) {
+  if (dir.value) {
+    addProp(el, 'innerHTML', ("_s(" + (dir.value) + ")"));
+  }
+}
+
+var directives$1 = {
+  model: model$1,
+  text: text,
+  html: html
+};
+
+/*  */
+
+var cache = Object.create(null);
+
+var baseOptions = {
+  expectHTML: true,
+  modules: modules$1,
+  staticKeys: genStaticKeys(modules$1),
+  directives: directives$1,
+  isReservedTag: isReservedTag,
+  isUnaryTag: isUnaryTag,
+  mustUseProp: mustUseProp,
+  getTagNamespace: getTagNamespace,
+  isPreTag: isPreTag
+};
+
+function compile$$1 (
+  template,
+  options
+) {
+  options = options
+    ? extend(extend({}, baseOptions), options)
+    : baseOptions;
+  return compile$1(template, options)
+}
+
+function compileToFunctions (
+  template,
+  options,
+  vm
+) {
+  var _warn = (options && options.warn) || warn;
+  // detect possible CSP restriction
+  /* istanbul ignore if */
+  {
+    try {
+      new Function('return 1');
+    } catch (e) {
+      if (e.toString().match(/unsafe-eval|CSP/)) {
+        _warn(
+          'It seems you are using the standalone build of Vue.js in an ' +
+          'environment with Content Security Policy that prohibits unsafe-eval. ' +
+          'The template compiler cannot work in this environment. Consider ' +
+          'relaxing the policy to allow unsafe-eval or pre-compiling your ' +
+          'templates into render functions.'
+        );
+      }
+    }
+  }
+  var key = options && options.delimiters
+    ? String(options.delimiters) + template
+    : template;
+  if (cache[key]) {
+    return cache[key]
+  }
+  var res = {};
+  var compiled = compile$$1(template, options);
+  res.render = makeFunction(compiled.render);
+  var l = compiled.staticRenderFns.length;
+  res.staticRenderFns = new Array(l);
+  for (var i = 0; i < l; i++) {
+    res.staticRenderFns[i] = makeFunction(compiled.staticRenderFns[i]);
+  }
+  {
+    if (res.render === noop || res.staticRenderFns.some(function (fn) { return fn === noop; })) {
+      _warn(
+        "failed to compile template:\n\n" + template + "\n\n" +
+        detectErrors(compiled.ast).join('\n') +
+        '\n\n',
+        vm
+      );
+    }
+  }
+  return (cache[key] = res)
+}
+
+function makeFunction (code) {
+  try {
+    return new Function(code)
+  } catch (e) {
+    return noop
+  }
+}
+
+/*  */
+
+var idToTemplate = cached(function (id) {
+  var el = query(id);
+  return el && el.innerHTML
+});
+
+var mount = Vue$3.prototype.$mount;
+Vue$3.prototype.$mount = function (
+  el,
+  hydrating
+) {
+  el = el && query(el);
+
+  /* istanbul ignore if */
+  if (el === document.body || el === document.documentElement) {
+    "development" !== 'production' && 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 ("development" !== 'production' && !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) {
+      var ref = compileToFunctions(template, {
+        warn: warn,
+        shouldDecodeNewlines: shouldDecodeNewlines,
+        delimiters: options.delimiters
+      }, this);
+      var render = ref.render;
+      var staticRenderFns = ref.staticRenderFns;
+      options.render = render;
+      options.staticRenderFns = staticRenderFns;
+    }
+  }
+  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$3.compile = compileToFunctions;
+
+return Vue$3;
+
+})));
diff --git a/templates/base/footer.tmpl b/templates/base/footer.tmpl
index e2494c107b..e8ad0a4d9f 100644
--- a/templates/base/footer.tmpl
+++ b/templates/base/footer.tmpl
@@ -65,5 +65,6 @@
 	<script src="{{AppSubUrl}}/js/libs/autolink.js"></script>
 	<script src="{{AppSubUrl}}/js/libs/emojify-1.1.0.min.js"></script>
 	<script src="{{AppSubUrl}}/js/libs/clipboard-1.5.9.min.js"></script>
+	<script src="{{AppSubUrl}}/js/libs/vue.js"></script>
 </body>
 </html>
diff --git a/templates/base/head.tmpl b/templates/base/head.tmpl
index a80075513d..68a7e43b69 100644
--- a/templates/base/head.tmpl
+++ b/templates/base/head.tmpl
@@ -11,6 +11,9 @@
 	<meta name="referrer" content="no-referrer" />
 	<meta name="_csrf" content="{{.CsrfToken}}" />
 	<meta name="_suburl" content="{{AppSubUrl}}" />
+	{{if .IsSigned}}
+		<meta name="_uid" content="{{.SignedUser.ID}}" />
+	{{end}}
 {{if .GoGetImport}}
 	<meta name="go-import" content="{{.GoGetImport}} git {{.CloneLink.HTTPS}}">
 	<meta name="go-source" content="{{.GoGetImport}} _ {{.GoDocDirectory}} {{.GoDocFile}}">
diff --git a/templates/user/dashboard/dashboard.tmpl b/templates/user/dashboard/dashboard.tmpl
index d2714273b9..014a37bc2f 100644
--- a/templates/user/dashboard/dashboard.tmpl
+++ b/templates/user/dashboard/dashboard.tmpl
@@ -7,17 +7,17 @@
 			<div class="ten wide column">
 				{{template "user/dashboard/feeds" .}}
 			</div>
-			<div class="six wide column">
+			<div id="dashboard-repo-search" class="six wide column">
 				<div class="ui {{if not .ContextUser.IsOrganization}}three{{else}}two{{end}} item tabable menu">
-					<a class="item active" data-tab="repos">{{.i18n.Tr "repository"}}</a>
+					<a :class="{item: true, active: tab === 'repos'}" @click="changeTab('repos')">{{.i18n.Tr "repository"}}</a>
 					{{if not .ContextUser.IsOrganization}}
-						<a class="item" data-tab="orgs">{{.i18n.Tr "organization"}}</a>
+						<a :class="{item: true, active: tab === 'orgs'}" @click="changeTab('orgs')">{{.i18n.Tr "organization"}}</a>
 					{{end}}
-					<a class="item" data-tab="mirrors">{{.i18n.Tr "mirror"}}</a>
+					<a :class="{item: true, active: tab === 'mirrors'}" @click="changeTab('mirrors')">{{.i18n.Tr "mirror"}}</a>
 				</div>
-				<div class="ui tab active list" data-tab="repos">
+				<div v-if="tab === 'repos'" class="ui tab active list">
 					<div class="ui fluid input">
-						<input id="search_repo" name="q" value="" placeholder="{{.i18n.Tr "home.search_repos"}}" autofocus="">
+						<input @keyUp="searchKeyUp" v-model="searchQuery" id="search_repo" placeholder="{{.i18n.Tr "home.search_repos"}}">
 					</div>
 					<h4 class="ui top attached header">
 						{{.i18n.Tr "home.my_repos"}} <span class="ui grey label">{{.ContextUser.NumRepos}}</span>
@@ -29,18 +29,16 @@
 						</div>
 					</h4>
 					<div class="ui attached table segment">
-						<ul class="repo-owner-name-list search-list">
-							{{range .Repos}}
-								<li {{if .IsPrivate}}class="private"{{end}} data-title="{{.Name}}">
-									<a href="{{AppSubUrl}}/{{$.ContextUser.Name}}/{{.Name}}">
-										<i class="octicon octicon-{{if .IsFork}}repo-forked{{else if .IsPrivate}}lock{{else if .IsMirror}}repo-clone{{else}}repo{{end}}"></i>
-										<strong class="text truncate item-name">{{.Name}}</strong>
-										<span class="ui right text light grey">
-											{{.NumStars}} <i class="octicon octicon-star rear"></i>
-										</span>
-									</a>
-								</li>
-							{{end}}
+						<ul class="repo-owner-name-list">
+							<li v-for="repo in repos" :class="{'private': repo.private}">
+								<a :href="'{{AppSubUrl}}/' + repo.full_name">
+									<i :class="repoClass(repo)"></i>
+									<strong class="text truncate item-name"><% repo.full_name %></strong>
+									<span class="ui right text light grey">
+										<% repo.stars_count %> <i class="octicon octicon-star rear"></i>
+									</span>
+								</a>
+							</li>
 							{{if gt .ContextUser.NumRepos .MaxShowRepoNum}}
 							<li>
 								<a href="{{.ContextUser.HomeLink}}">{{.i18n.Tr "home.show_more_repos"}}</a>
@@ -54,9 +52,9 @@
 							{{.i18n.Tr "home.collaborative_repos"}}
 						</h4>
 						<div class="ui attached table segment">
-							<ul id="collaborative-repo-list" class="search-list">
+							<ul id="collaborative-repo-list">
 								{{range .CollaborativeRepos}}
-									<li {{if .IsPrivate}}class="private"{{end}} data-title="{{.Name}}">
+									<li {{if .IsPrivate}}class="private"{{end}}>
 										<a href="{{AppSubUrl}}/{{.Owner.Name}}/{{.Name}}">
 											<i class="octicon octicon-{{if .IsPrivate}}lock{{else if .IsFork}}repo-forked{{else if .IsMirror}}repo-clone{{else}}repo{{end}}"></i>
 											<span class="text truncate owner-and-repo">
@@ -74,7 +72,7 @@
 				</div>
 
 				{{if not .ContextUser.IsOrganization}}
-					<div class="ui tab list" data-tab="orgs">
+					<div v-if="tab === 'orgs'" class="ui tab active list">
 						<h4 class="ui top attached header">
 							{{.i18n.Tr "home.my_orgs"}} <span class="ui grey label">{{.ContextUser.GetOrganizationCount}}</span>
 							<div class="ui right">
@@ -102,7 +100,7 @@
 					</div>
 				{{end}}
 
-				<div class="ui tab list" data-tab="mirrors">
+				<div v-if="tab === 'mirrors'" class="ui tab active list">
 					<h4 class="ui top attached header">
 						{{.i18n.Tr "home.my_mirrors"}} <span class="ui grey label">{{.MirrorCount}}</span>
 						<div class="ui right">