From a97d6bf24ba8a0e43137e3fdf96b6170f16566eb Mon Sep 17 00:00:00 2001
From: Antoine GIRARD <sapk@users.noreply.github.com>
Date: Sun, 4 Jun 2017 05:04:42 +0200
Subject: [PATCH] Use production version of vuejs. (#1869)

---
 public/js/libs/vue.js      | 8568 ------------------------------------
 public/js/libs/vue.min.js  |    8 +
 templates/base/footer.tmpl |    2 +-
 3 files changed, 9 insertions(+), 8569 deletions(-)
 delete mode 100644 public/js/libs/vue.js
 create mode 100644 public/js/libs/vue.min.js

diff --git a/public/js/libs/vue.js b/public/js/libs/vue.js
deleted file mode 100644
index 918e77919c..0000000000
--- a/public/js/libs/vue.js
+++ /dev/null
@@ -1,8568 +0,0 @@
-/*!
- * 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) {
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diff --git a/public/js/libs/vue.min.js b/public/js/libs/vue.min.js
new file mode 100644
index 0000000000..9ac23c4e9b
--- /dev/null
+++ b/public/js/libs/vue.min.js
@@ -0,0 +1,8 @@
+/*!
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+ * (c) 2014-2017 Evan You
+ * Released under the MIT License.
+ */
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diff --git a/templates/base/footer.tmpl b/templates/base/footer.tmpl
index 643a2f1c85..923f39e85b 100644
--- a/templates/base/footer.tmpl
+++ b/templates/base/footer.tmpl
@@ -65,6 +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>
+	<script src="{{AppSubUrl}}/js/libs/vue.min.js"></script>
 </body>
 </html>