diff --git a/dist/vue.common.js b/dist/vue.common.js
index 5666e41d..3bbc37c9 100644
--- a/dist/vue.common.js
+++ b/dist/vue.common.js
@@ -1,11080 +1,5 @@
-/*!
- * Vue.js v2.5.22
- * (c) 2014-2019 Evan You
- * Released under the MIT License.
- */
-'use strict';
-
-/*  */
-
-var emptyObject = Object.freeze({});
-
-// These helpers produce better VM code in JS engines due to their
-// explicitness and function inlining.
-function isUndef (v) {
-  return v === undefined || v === null
-}
-
-function isDef (v) {
-  return v !== undefined && v !== null
-}
-
-function isTrue (v) {
-  return v === true
-}
-
-function isFalse (v) {
-  return v === false
-}
-
-/**
- * Check if value is primitive.
- */
-function isPrimitive (value) {
-  return (
-    typeof value === 'string' ||
-    typeof value === 'number' ||
-    // $flow-disable-line
-    typeof value === 'symbol' ||
-    typeof value === 'boolean'
-  )
-}
-
-/**
- * Quick object check - this is primarily used to tell
- * Objects from primitive values when we know the value
- * is a JSON-compliant type.
- */
-function isObject (obj) {
-  return obj !== null && typeof obj === 'object'
-}
-
-/**
- * Get the raw type string of a value, e.g., [object Object].
- */
-var _toString = Object.prototype.toString;
-
-function toRawType (value) {
-  return _toString.call(value).slice(8, -1)
-}
-
-/**
- * Strict object type check. Only returns true
- * for plain JavaScript objects.
- */
-function isPlainObject (obj) {
-  return _toString.call(obj) === '[object Object]'
-}
-
-function isRegExp (v) {
-  return _toString.call(v) === '[object RegExp]'
-}
-
-/**
- * Check if val is a valid array index.
- */
-function isValidArrayIndex (val) {
-  var n = parseFloat(String(val));
-  return n >= 0 && Math.floor(n) === n && isFinite(val)
-}
-
-/**
- * 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 an input value to a number for persistence.
- * If the conversion fails, return original string.
- */
-function toNumber (val) {
-  var n = parseFloat(val);
-  return isNaN(n) ? val : n
-}
-
-/**
- * Make a map and return a function for checking if a key
- * is in that map.
- */
-function makeMap (
-  str,
-  expectsLowerCase
-) {
-  var map = Object.create(null);
-  var list = str.split(',');
-  for (var i = 0; i < list.length; i++) {
-    map[list[i]] = true;
-  }
-  return expectsLowerCase
-    ? function (val) { return map[val.toLowerCase()]; }
-    : function (val) { return map[val]; }
-}
-
-/**
- * Check if a tag is a built-in tag.
- */
-var isBuiltInTag = makeMap('slot,component', true);
-
-/**
- * Check if an attribute is a reserved attribute.
- */
-var isReservedAttribute = makeMap('key,ref,slot,slot-scope,is');
-
-/**
- * Remove an item from an array.
- */
-function remove (arr, item) {
-  if (arr.length) {
-    var index = arr.indexOf(item);
-    if (index > -1) {
-      return arr.splice(index, 1)
-    }
-  }
-}
-
-/**
- * Check whether an object has the property.
- */
-var hasOwnProperty = Object.prototype.hasOwnProperty;
-function hasOwn (obj, key) {
-  return hasOwnProperty.call(obj, key)
-}
-
-/**
- * Create a cached version of a pure function.
- */
-function cached (fn) {
-  var cache = Object.create(null);
-  return (function cachedFn (str) {
-    var hit = cache[str];
-    return hit || (cache[str] = fn(str))
-  })
-}
-
-/**
- * Camelize a hyphen-delimited string.
- */
-var camelizeRE = /-(\w)/g;
-var camelize = cached(function (str) {
-  return str.replace(camelizeRE, function (_, c) { return c ? c.toUpperCase() : ''; })
-});
-
-/**
- * Capitalize a string.
- */
-var capitalize = cached(function (str) {
-  return str.charAt(0).toUpperCase() + str.slice(1)
-});
-
-/**
- * Hyphenate a camelCase string.
- */
-var hyphenateRE = /\B([A-Z])/g;
-var hyphenate = cached(function (str) {
-  return str.replace(hyphenateRE, '-$1').toLowerCase()
-});
-
-/**
- * Simple bind polyfill for environments that do not support it,
- * e.g., PhantomJS 1.x. Technically, we don't need this anymore
- * since native bind is now performant enough in most browsers.
- * But removing it would mean breaking code that was able to run in
- * PhantomJS 1.x, so this must be kept for backward compatibility.
- */
-
-/* istanbul ignore next */
-function polyfillBind (fn, ctx) {
-  function boundFn (a) {
-    var l = arguments.length;
-    return l
-      ? l > 1
-        ? fn.apply(ctx, arguments)
-        : fn.call(ctx, a)
-      : fn.call(ctx)
-  }
-
-  boundFn._length = fn.length;
-  return boundFn
-}
-
-function nativeBind (fn, ctx) {
-  return fn.bind(ctx)
-}
-
-var bind = Function.prototype.bind
-  ? nativeBind
-  : polyfillBind;
-
-/**
- * Convert an Array-like object to a real Array.
- */
-function toArray (list, start) {
-  start = start || 0;
-  var i = list.length - start;
-  var ret = new Array(i);
-  while (i--) {
-    ret[i] = list[i + start];
-  }
-  return ret
-}
-
-/**
- * Mix properties into target object.
- */
-function extend (to, _from) {
-  for (var key in _from) {
-    to[key] = _from[key];
-  }
-  return to
-}
-
-/**
- * Merge an Array of Objects into a single Object.
- */
-function toObject (arr) {
-  var res = {};
-  for (var i = 0; i < arr.length; i++) {
-    if (arr[i]) {
-      extend(res, arr[i]);
-    }
-  }
-  return res
-}
-
-/* eslint-disable no-unused-vars */
-
-/**
- * Perform no operation.
- * Stubbing args to make Flow happy without leaving useless transpiled code
- * with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/).
- */
-function noop (a, b, c) {}
-
-/**
- * Always return false.
- */
-var no = function (a, b, c) { return false; };
-
-/* eslint-enable no-unused-vars */
-
-/**
- * Return the same value.
- */
-var identity = function (_) { return _; };
-
-/**
- * Generate a string containing static keys from compiler modules.
- */
-function genStaticKeys (modules) {
-  return modules.reduce(function (keys, m) {
-    return keys.concat(m.staticKeys || [])
-  }, []).join(',')
-}
-
-/**
- * Check if two values are loosely equal - that is,
- * if they are plain objects, do they have the same shape?
- */
-function looseEqual (a, b) {
-  if (a === b) { return true }
-  var isObjectA = isObject(a);
-  var isObjectB = isObject(b);
-  if (isObjectA && isObjectB) {
-    try {
-      var isArrayA = Array.isArray(a);
-      var isArrayB = Array.isArray(b);
-      if (isArrayA && isArrayB) {
-        return a.length === b.length && a.every(function (e, i) {
-          return looseEqual(e, b[i])
-        })
-      } else if (a instanceof Date && b instanceof Date) {
-        return a.getTime() === b.getTime()
-      } else if (!isArrayA && !isArrayB) {
-        var keysA = Object.keys(a);
-        var keysB = Object.keys(b);
-        return keysA.length === keysB.length && keysA.every(function (key) {
-          return looseEqual(a[key], b[key])
-        })
-      } else {
-        /* istanbul ignore next */
-        return false
-      }
-    } catch (e) {
-      /* istanbul ignore next */
-      return false
-    }
-  } else if (!isObjectA && !isObjectB) {
-    return String(a) === String(b)
-  } else {
-    return false
-  }
-}
-
-/**
- * Return the first index at which a loosely equal value can be
- * found in the array (if value is a plain object, the array must
- * contain an object of the same shape), or -1 if it is not present.
- */
-function looseIndexOf (arr, val) {
-  for (var i = 0; i < arr.length; i++) {
-    if (looseEqual(arr[i], val)) { return i }
-  }
-  return -1
-}
-
-/**
- * Ensure a function is called only once.
- */
-function once (fn) {
-  var called = false;
-  return function () {
-    if (!called) {
-      called = true;
-      fn.apply(this, arguments);
-    }
-  }
-}
-
-var SSR_ATTR = 'data-server-rendered';
-
-var ASSET_TYPES = [
-  'component',
-  'directive',
-  'filter'
-];
-
-var LIFECYCLE_HOOKS = [
-  'beforeCreate',
-  'created',
-  'beforeMount',
-  'mounted',
-  'beforeUpdate',
-  'updated',
-  'beforeDestroy',
-  'destroyed',
-  'activated',
-  'deactivated',
-  'errorCaptured'
-];
-
-/*  */
-
-
-
-var config = ({
-  /**
-   * Option merge strategies (used in core/util/options)
-   */
-  // $flow-disable-line
-  optionMergeStrategies: Object.create(null),
-
-  /**
-   * Whether to suppress warnings.
-   */
-  silent: false,
-
-  /**
-   * Show production mode tip message on boot?
-   */
-  productionTip: process.env.NODE_ENV !== 'production',
-
-  /**
-   * Whether to enable devtools
-   */
-  devtools: process.env.NODE_ENV !== 'production',
-
-  /**
-   * Whether to record perf
-   */
-  performance: false,
-
-  /**
-   * Error handler for watcher errors
-   */
-  errorHandler: null,
-
-  /**
-   * Warn handler for watcher warns
-   */
-  warnHandler: null,
-
-  /**
-   * Ignore certain custom elements
-   */
-  ignoredElements: [],
-
-  /**
-   * Custom user key aliases for v-on
-   */
-  // $flow-disable-line
-  keyCodes: Object.create(null),
-
-  /**
-   * Check if a tag is reserved so that it cannot be registered as a
-   * component. This is platform-dependent and may be overwritten.
-   */
-  isReservedTag: no,
-
-  /**
-   * Check if an attribute is reserved so that it cannot be used as a component
-   * prop. This is platform-dependent and may be overwritten.
-   */
-  isReservedAttr: no,
-
-  /**
-   * Check if a tag is an unknown element.
-   * Platform-dependent.
-   */
-  isUnknownElement: no,
-
-  /**
-   * Get the namespace of an element
-   */
-  getTagNamespace: noop,
-
-  /**
-   * Parse the real tag name for the specific platform.
-   */
-  parsePlatformTagName: identity,
-
-  /**
-   * Check if an attribute must be bound using property, e.g. value
-   * Platform-dependent.
-   */
-  mustUseProp: no,
-
-  /**
-   * Perform updates asynchronously. Intended to be used by Vue Test Utils
-   * This will significantly reduce performance if set to false.
-   */
-  async: true,
-
-  /**
-   * Exposed for legacy reasons
-   */
-  _lifecycleHooks: LIFECYCLE_HOOKS
-});
-
-/*  */
-
-/**
- * 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
-  }
-  var segments = path.split('.');
-  return function (obj) {
-    for (var i = 0; i < segments.length; i++) {
-      if (!obj) { return }
-      obj = obj[segments[i]];
-    }
-    return obj
-  }
-}
-
-/*  */
-
-// can we use __proto__?
-var hasProto = '__proto__' in {};
-
-// Browser environment sniffing
-var inBrowser = typeof window !== 'undefined';
-var inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform;
-var weexPlatform = inWeex && WXEnvironment.platform.toLowerCase();
-var UA = inBrowser && window.navigator.userAgent.toLowerCase();
-var isIE = UA && /msie|trident/.test(UA);
-var isIE9 = UA && UA.indexOf('msie 9.0') > 0;
-var isEdge = UA && UA.indexOf('edge/') > 0;
-var isAndroid = (UA && UA.indexOf('android') > 0) || (weexPlatform === 'android');
-var isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || (weexPlatform === 'ios');
-var isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge;
-
-// Firefox has a "watch" function on Object.prototype...
-var nativeWatch = ({}).watch;
-
-var supportsPassive = false;
-if (inBrowser) {
-  try {
-    var opts = {};
-    Object.defineProperty(opts, 'passive', ({
-      get: function get () {
-        /* istanbul ignore next */
-        supportsPassive = true;
-      }
-    })); // https://github.com/facebook/flow/issues/285
-    window.addEventListener('test-passive', null, opts);
-  } catch (e) {}
-}
-
-// this needs to be lazy-evaled because vue may be required before
-// vue-server-renderer can set VUE_ENV
-var _isServer;
-var isServerRendering = function () {
-  if (_isServer === undefined) {
-    /* istanbul ignore if */
-    if (!inBrowser && !inWeex && typeof global !== 'undefined') {
-      // detect presence of vue-server-renderer and avoid
-      // Webpack shimming the process
-      _isServer = global['process'] && global['process'].env.VUE_ENV === 'server';
-    } else {
-      _isServer = false;
-    }
-  }
-  return _isServer
-};
-
-// detect devtools
-var devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__;
-
-/* istanbul ignore next */
-function isNative (Ctor) {
-  return typeof Ctor === 'function' && /native code/.test(Ctor.toString())
-}
-
-var hasSymbol =
-  typeof Symbol !== 'undefined' && isNative(Symbol) &&
-  typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys);
-
-var _Set;
-/* istanbul ignore if */ // $flow-disable-line
-if (typeof Set !== 'undefined' && isNative(Set)) {
-  // use native Set when available.
-  _Set = Set;
-} else {
-  // a non-standard Set polyfill that only works with primitive keys.
-  _Set = /*@__PURE__*/(function () {
-    function Set () {
-      this.set = Object.create(null);
-    }
-    Set.prototype.has = function has (key) {
-      return this.set[key] === true
-    };
-    Set.prototype.add = function add (key) {
-      this.set[key] = true;
-    };
-    Set.prototype.clear = function clear () {
-      this.set = Object.create(null);
-    };
-
-    return Set;
-  }());
-}
-
-/*  */
-
-var warn = noop;
-var tip = noop;
-var generateComponentTrace = (noop); // work around flow check
-var formatComponentName = (noop);
-
-if (process.env.NODE_ENV !== 'production') {
-  var hasConsole = typeof console !== 'undefined';
-  var classifyRE = /(?:^|[-_])(\w)/g;
-  var classify = function (str) { return str
-    .replace(classifyRE, function (c) { return c.toUpperCase(); })
-    .replace(/[-_]/g, ''); };
-
-  warn = function (msg, vm) {
-    var trace = vm ? generateComponentTrace(vm) : '';
-
-    if (config.warnHandler) {
-      config.warnHandler.call(null, msg, vm, trace);
-    } else if (hasConsole && (!config.silent)) {
-      console.error(("[Vue warn]: " + msg + trace));
-    }
-  };
-
-  tip = function (msg, vm) {
-    if (hasConsole && (!config.silent)) {
-      console.warn("[Vue tip]: " + msg + (
-        vm ? generateComponentTrace(vm) : ''
-      ));
-    }
-  };
-
-  formatComponentName = function (vm, includeFile) {
-    if (vm.$root === vm) {
-      return '<Root>'
-    }
-    var options = typeof vm === 'function' && vm.cid != null
-      ? vm.options
-      : vm._isVue
-        ? vm.$options || vm.constructor.options
-        : vm;
-    var name = options.name || options._componentTag;
-    var file = options.__file;
-    if (!name && file) {
-      var match = file.match(/([^/\\]+)\.vue$/);
-      name = match && match[1];
-    }
-
-    return (
-      (name ? ("<" + (classify(name)) + ">") : "<Anonymous>") +
-      (file && includeFile !== false ? (" at " + file) : '')
-    )
-  };
-
-  var repeat = function (str, n) {
-    var res = '';
-    while (n) {
-      if (n % 2 === 1) { res += str; }
-      if (n > 1) { str += str; }
-      n >>= 1;
-    }
-    return res
-  };
-
-  generateComponentTrace = function (vm) {
-    if (vm._isVue && vm.$parent) {
-      var tree = [];
-      var currentRecursiveSequence = 0;
-      while (vm) {
-        if (tree.length > 0) {
-          var last = tree[tree.length - 1];
-          if (last.constructor === vm.constructor) {
-            currentRecursiveSequence++;
-            vm = vm.$parent;
-            continue
-          } else if (currentRecursiveSequence > 0) {
-            tree[tree.length - 1] = [last, currentRecursiveSequence];
-            currentRecursiveSequence = 0;
-          }
-        }
-        tree.push(vm);
-        vm = vm.$parent;
-      }
-      return '\n\nfound in\n\n' + tree
-        .map(function (vm, i) { return ("" + (i === 0 ? '---> ' : repeat(' ', 5 + i * 2)) + (Array.isArray(vm)
-            ? ((formatComponentName(vm[0])) + "... (" + (vm[1]) + " recursive calls)")
-            : formatComponentName(vm))); })
-        .join('\n')
-    } else {
-      return ("\n\n(found in " + (formatComponentName(vm)) + ")")
-    }
-  };
-}
-
-/*  */
-
-var uid = 0;
-
-/**
- * A dep is an observable that can have multiple
- * directives subscribing to it.
- */
-var Dep = function Dep () {
-  this.id = uid++;
-  this.subs = [];
-};
-
-Dep.prototype.addSub = function addSub (sub) {
-  this.subs.push(sub);
-};
-
-Dep.prototype.removeSub = function removeSub (sub) {
-  remove(this.subs, sub);
-};
-
-Dep.prototype.depend = function depend () {
-  if (Dep.target) {
-    Dep.target.addDep(this);
-  }
-};
-
-Dep.prototype.notify = function notify () {
-  // stabilize the subscriber list first
-  var subs = this.subs.slice();
-  if (process.env.NODE_ENV !== 'production' && !config.async) {
-    // subs aren't sorted in scheduler if not running async
-    // we need to sort them now to make sure they fire in correct
-    // order
-    subs.sort(function (a, b) { return a.id - b.id; });
-  }
-  for (var i = 0, l = subs.length; i < l; i++) {
-    subs[i].update();
-  }
-};
-
-// The current target watcher being evaluated.
-// This is globally unique because only one watcher
-// can be evaluated at a time.
-Dep.target = null;
-var targetStack = [];
-
-function pushTarget (target) {
-  targetStack.push(target);
-  Dep.target = target;
-}
-
-function popTarget () {
-  targetStack.pop();
-  Dep.target = targetStack[targetStack.length - 1];
-}
-
-/*  */
-
-var VNode = function VNode (
-  tag,
-  data,
-  children,
-  text,
-  elm,
-  context,
-  componentOptions,
-  asyncFactory
-) {
-  this.tag = tag;
-  this.data = data;
-  this.children = children;
-  this.text = text;
-  this.elm = elm;
-  this.ns = undefined;
-  this.context = context;
-  this.fnContext = undefined;
-  this.fnOptions = undefined;
-  this.fnScopeId = undefined;
-  this.key = data && data.key;
-  this.componentOptions = componentOptions;
-  this.componentInstance = undefined;
-  this.parent = undefined;
-  this.raw = false;
-  this.isStatic = false;
-  this.isRootInsert = true;
-  this.isComment = false;
-  this.isCloned = false;
-  this.isOnce = false;
-  this.asyncFactory = asyncFactory;
-  this.asyncMeta = undefined;
-  this.isAsyncPlaceholder = false;
-};
-
-var prototypeAccessors = { child: { configurable: true } };
-
-// DEPRECATED: alias for componentInstance for backwards compat.
-/* istanbul ignore next */
-prototypeAccessors.child.get = function () {
-  return this.componentInstance
-};
-
-Object.defineProperties( VNode.prototype, prototypeAccessors );
-
-var createEmptyVNode = function (text) {
-  if ( text === void 0 ) text = '';
-
-  var node = new VNode();
-  node.text = text;
-  node.isComment = true;
-  return node
-};
-
-function createTextVNode (val) {
-  return new VNode(undefined, undefined, undefined, String(val))
-}
-
-// optimized shallow clone
-// used for static nodes and slot nodes because they may be reused across
-// multiple renders, cloning them avoids errors when DOM manipulations rely
-// on their elm reference.
-function cloneVNode (vnode) {
-  var cloned = new VNode(
-    vnode.tag,
-    vnode.data,
-    // #7975
-    // clone children array to avoid mutating original in case of cloning
-    // a child.
-    vnode.children && vnode.children.slice(),
-    vnode.text,
-    vnode.elm,
-    vnode.context,
-    vnode.componentOptions,
-    vnode.asyncFactory
-  );
-  cloned.ns = vnode.ns;
-  cloned.isStatic = vnode.isStatic;
-  cloned.key = vnode.key;
-  cloned.isComment = vnode.isComment;
-  cloned.fnContext = vnode.fnContext;
-  cloned.fnOptions = vnode.fnOptions;
-  cloned.fnScopeId = vnode.fnScopeId;
-  cloned.asyncMeta = vnode.asyncMeta;
-  cloned.isCloned = true;
-  return cloned
-}
-
-/*
- * not type checking this file because flow doesn't play well with
- * dynamically accessing methods on Array prototype
- */
-
-var arrayProto = Array.prototype;
-var arrayMethods = Object.create(arrayProto);
-
-var methodsToPatch = [
-  'push',
-  'pop',
-  'shift',
-  'unshift',
-  'splice',
-  'sort',
-  'reverse'
-];
-
-/**
- * Intercept mutating methods and emit events
- */
-methodsToPatch.forEach(function (method) {
-  // cache original method
-  var original = arrayProto[method];
-  def(arrayMethods, method, function mutator () {
-    var args = [], len = arguments.length;
-    while ( len-- ) args[ len ] = arguments[ len ];
-
-    var result = original.apply(this, args);
-    var ob = this.__ob__;
-    var inserted;
-    switch (method) {
-      case 'push':
-      case 'unshift':
-        inserted = args;
-        break
-      case 'splice':
-        inserted = args.slice(2);
-        break
-    }
-    if (inserted) { ob.observeArray(inserted); }
-    // notify change
-    ob.dep.notify();
-    return result
-  });
-});
-
-/*  */
-
-var arrayKeys = Object.getOwnPropertyNames(arrayMethods);
-
-/**
- * In some cases we may want to disable observation inside a component's
- * update computation.
- */
-var shouldObserve = true;
-
-function toggleObserving (value) {
-  shouldObserve = value;
-}
-
-/**
- * Observer class that is attached to each observed
- * object. Once attached, the observer converts the target
- * object's property keys into getter/setters that
- * collect dependencies and dispatch updates.
- */
-var Observer = function Observer (value) {
-  this.value = value;
-  this.dep = new Dep();
-  this.vmCount = 0;
-  def(value, '__ob__', this);
-  if (Array.isArray(value)) {
-    if (hasProto) {
-      protoAugment(value, arrayMethods);
-    } else {
-      copyAugment(value, arrayMethods, arrayKeys);
-    }
-    this.observeArray(value);
-  } else {
-    this.walk(value);
-  }
-};
-
-/**
- * Walk through all properties and convert them into
- * getter/setters. This method should only be called when
- * value type is Object.
- */
-Observer.prototype.walk = function walk (obj) {
-  var keys = Object.keys(obj);
-  for (var i = 0; i < keys.length; i++) {
-    defineReactive$$1(obj, keys[i]);
-  }
-};
-
-/**
- * Observe a list of Array items.
- */
-Observer.prototype.observeArray = function observeArray (items) {
-  for (var i = 0, l = items.length; i < l; i++) {
-    observe(items[i]);
-  }
-};
-
-// helpers
-
-/**
- * Augment a target Object or Array by intercepting
- * the prototype chain using __proto__
- */
-function protoAugment (target, src) {
-  /* eslint-disable no-proto */
-  target.__proto__ = src;
-  /* eslint-enable no-proto */
-}
-
-/**
- * Augment a target Object or Array by defining
- * hidden properties.
- */
-/* istanbul ignore next */
-function copyAugment (target, src, keys) {
-  for (var i = 0, l = keys.length; i < l; i++) {
-    var key = keys[i];
-    def(target, key, src[key]);
-  }
-}
-
-/**
- * Attempt to create an observer instance for a value,
- * returns the new observer if successfully observed,
- * or the existing observer if the value already has one.
- */
-function observe (value, asRootData) {
-  if (!isObject(value) || value instanceof VNode) {
-    return
-  }
-  var ob;
-  if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {
-    ob = value.__ob__;
-  } else if (
-    shouldObserve &&
-    !isServerRendering() &&
-    (Array.isArray(value) || isPlainObject(value)) &&
-    Object.isExtensible(value) &&
-    !value._isVue
-  ) {
-    ob = new Observer(value);
-  }
-  if (asRootData && ob) {
-    ob.vmCount++;
-  }
-  return ob
-}
-
-/**
- * Define a reactive property on an Object.
- */
-function defineReactive$$1 (
-  obj,
-  key,
-  val,
-  customSetter,
-  shallow
-) {
-  var dep = new Dep();
-
-  var property = Object.getOwnPropertyDescriptor(obj, key);
-  if (property && property.configurable === false) {
-    return
-  }
-
-  // cater for pre-defined getter/setters
-  var getter = property && property.get;
-  var setter = property && property.set;
-  if ((!getter || setter) && arguments.length === 2) {
-    val = obj[key];
-  }
-
-  var childOb = !shallow && observe(val);
-  Object.defineProperty(obj, key, {
-    enumerable: true,
-    configurable: true,
-    get: function reactiveGetter () {
-      var value = getter ? getter.call(obj) : val;
-      if (Dep.target) {
-        dep.depend();
-        if (childOb) {
-          childOb.dep.depend();
-          if (Array.isArray(value)) {
-            dependArray(value);
-          }
-        }
-      }
-      return value
-    },
-    set: function reactiveSetter (newVal) {
-      var value = getter ? getter.call(obj) : val;
-      /* eslint-disable no-self-compare */
-      if (newVal === value || (newVal !== newVal && value !== value)) {
-        return
-      }
-      /* eslint-enable no-self-compare */
-      if (process.env.NODE_ENV !== 'production' && customSetter) {
-        customSetter();
-      }
-      // #7981: for accessor properties without setter
-      if (getter && !setter) { return }
-      if (setter) {
-        setter.call(obj, newVal);
-      } else {
-        val = newVal;
-      }
-      childOb = !shallow && observe(newVal);
-      dep.notify();
-    }
-  });
-}
-
-/**
- * Set a property on an object. Adds the new property and
- * triggers change notification if the property doesn't
- * already exist.
- */
-function set (target, key, val) {
-  if (process.env.NODE_ENV !== 'production' &&
-    (isUndef(target) || isPrimitive(target))
-  ) {
-    warn(("Cannot set reactive property on undefined, null, or primitive value: " + ((target))));
-  }
-  if (Array.isArray(target) && isValidArrayIndex(key)) {
-    target.length = Math.max(target.length, key);
-    target.splice(key, 1, val);
-    return val
-  }
-  if (key in target && !(key in Object.prototype)) {
-    target[key] = val;
-    return val
-  }
-  var ob = (target).__ob__;
-  if (target._isVue || (ob && ob.vmCount)) {
-    process.env.NODE_ENV !== 'production' && warn(
-      'Avoid adding reactive properties to a Vue instance or its root $data ' +
-      'at runtime - declare it upfront in the data option.'
-    );
-    return val
-  }
-  if (!ob) {
-    target[key] = val;
-    return val
-  }
-  defineReactive$$1(ob.value, key, val);
-  ob.dep.notify();
-  return val
-}
-
-/**
- * Delete a property and trigger change if necessary.
- */
-function del (target, key) {
-  if (process.env.NODE_ENV !== 'production' &&
-    (isUndef(target) || isPrimitive(target))
-  ) {
-    warn(("Cannot delete reactive property on undefined, null, or primitive value: " + ((target))));
-  }
-  if (Array.isArray(target) && isValidArrayIndex(key)) {
-    target.splice(key, 1);
-    return
-  }
-  var ob = (target).__ob__;
-  if (target._isVue || (ob && ob.vmCount)) {
-    process.env.NODE_ENV !== 'production' && warn(
-      'Avoid deleting properties on a Vue instance or its root $data ' +
-      '- just set it to null.'
-    );
-    return
-  }
-  if (!hasOwn(target, key)) {
-    return
-  }
-  delete target[key];
-  if (!ob) {
-    return
-  }
-  ob.dep.notify();
-}
-
-/**
- * Collect dependencies on array elements when the array is touched, since
- * we cannot intercept array element access like property getters.
- */
-function dependArray (value) {
-  for (var e = (void 0), i = 0, l = value.length; i < l; i++) {
-    e = value[i];
-    e && e.__ob__ && e.__ob__.dep.depend();
-    if (Array.isArray(e)) {
-      dependArray(e);
-    }
-  }
-}
-
-/*  */
-
-/**
- * Option overwriting strategies are functions that handle
- * how to merge a parent option value and a child option
- * value into the final value.
- */
-var strats = config.optionMergeStrategies;
-
-/**
- * Options with restrictions
- */
-if (process.env.NODE_ENV !== 'production') {
-  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(to, key, fromVal);
-    } else if (
-      toVal !== fromVal &&
-      isPlainObject(toVal) &&
-      isPlainObject(fromVal)
-    ) {
-      mergeData(toVal, fromVal);
-    }
-  }
-  return to
-}
-
-/**
- * Data
- */
-function mergeDataOrFn (
-  parentVal,
-  childVal,
-  vm
-) {
-  if (!vm) {
-    // in a Vue.extend merge, both should be functions
-    if (!childVal) {
-      return parentVal
-    }
-    if (!parentVal) {
-      return childVal
-    }
-    // when parentVal & childVal are both present,
-    // we need to return a function that returns the
-    // merged result of both functions... no need to
-    // check if parentVal is a function here because
-    // it has to be a function to pass previous merges.
-    return function mergedDataFn () {
-      return mergeData(
-        typeof childVal === 'function' ? childVal.call(this, this) : childVal,
-        typeof parentVal === 'function' ? parentVal.call(this, this) : parentVal
-      )
-    }
-  } else {
-    return function mergedInstanceDataFn () {
-      // instance merge
-      var instanceData = typeof childVal === 'function'
-        ? childVal.call(vm, vm)
-        : childVal;
-      var defaultData = typeof parentVal === 'function'
-        ? parentVal.call(vm, vm)
-        : parentVal;
-      if (instanceData) {
-        return mergeData(instanceData, defaultData)
-      } else {
-        return defaultData
-      }
-    }
-  }
-}
-
-strats.data = function (
-  parentVal,
-  childVal,
-  vm
-) {
-  if (!vm) {
-    if (childVal && typeof childVal !== 'function') {
-      process.env.NODE_ENV !== 'production' && warn(
-        'The "data" option should be a function ' +
-        'that returns a per-instance value in component ' +
-        'definitions.',
-        vm
-      );
-
-      return parentVal
-    }
-    return mergeDataOrFn(parentVal, childVal)
-  }
-
-  return mergeDataOrFn(parentVal, childVal, vm)
-};
-
-/**
- * Hooks and props are merged as arrays.
- */
-function mergeHook (
-  parentVal,
-  childVal
-) {
-  var res = childVal
-    ? parentVal
-      ? parentVal.concat(childVal)
-      : Array.isArray(childVal)
-        ? childVal
-        : [childVal]
-    : parentVal;
-  return res
-    ? dedupeHooks(res)
-    : res
-}
-
-function dedupeHooks (hooks) {
-  var res = [];
-  for (var i = 0; i < hooks.length; i++) {
-    if (res.indexOf(hooks[i]) === -1) {
-      res.push(hooks[i]);
-    }
-  }
-  return res
-}
-
-LIFECYCLE_HOOKS.forEach(function (hook) {
-  strats[hook] = mergeHook;
-});
-
-/**
- * Assets
- *
- * When a vm is present (instance creation), we need to do
- * a three-way merge between constructor options, instance
- * options and parent options.
- */
-function mergeAssets (
-  parentVal,
-  childVal,
-  vm,
-  key
-) {
-  var res = Object.create(parentVal || null);
-  if (childVal) {
-    process.env.NODE_ENV !== 'production' && assertObjectType(key, childVal, vm);
-    return extend(res, childVal)
-  } else {
-    return res
-  }
-}
-
-ASSET_TYPES.forEach(function (type) {
-  strats[type + 's'] = mergeAssets;
-});
-
-/**
- * Watchers.
- *
- * Watchers hashes should not overwrite one
- * another, so we merge them as arrays.
- */
-strats.watch = function (
-  parentVal,
-  childVal,
-  vm,
-  key
-) {
-  // work around Firefox's Object.prototype.watch...
-  if (parentVal === nativeWatch) { parentVal = undefined; }
-  if (childVal === nativeWatch) { childVal = undefined; }
-  /* istanbul ignore if */
-  if (!childVal) { return Object.create(parentVal || null) }
-  if (process.env.NODE_ENV !== 'production') {
-    assertObjectType(key, childVal, vm);
-  }
-  if (!parentVal) { return childVal }
-  var ret = {};
-  extend(ret, parentVal);
-  for (var key$1 in childVal) {
-    var parent = ret[key$1];
-    var child = childVal[key$1];
-    if (parent && !Array.isArray(parent)) {
-      parent = [parent];
-    }
-    ret[key$1] = parent
-      ? parent.concat(child)
-      : Array.isArray(child) ? child : [child];
-  }
-  return ret
-};
-
-/**
- * Other object hashes.
- */
-strats.props =
-strats.methods =
-strats.inject =
-strats.computed = function (
-  parentVal,
-  childVal,
-  vm,
-  key
-) {
-  if (childVal && process.env.NODE_ENV !== 'production') {
-    assertObjectType(key, childVal, vm);
-  }
-  if (!parentVal) { return childVal }
-  var ret = Object.create(null);
-  extend(ret, parentVal);
-  if (childVal) { extend(ret, childVal); }
-  return ret
-};
-strats.provide = mergeDataOrFn;
-
-/**
- * Default strategy.
- */
-var defaultStrat = function (parentVal, childVal) {
-  return childVal === undefined
-    ? parentVal
-    : childVal
-};
-
-/**
- * Validate component names
- */
-function checkComponents (options) {
-  for (var key in options.components) {
-    validateComponentName(key);
-  }
-}
-
-function validateComponentName (name) {
-  if (!/^[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.'
-    );
-  }
-  if (isBuiltInTag(name) || config.isReservedTag(name)) {
-    warn(
-      'Do not use built-in or reserved HTML elements as component ' +
-      'id: ' + name
-    );
-  }
-}
-
-/**
- * Ensure all props option syntax are normalized into the
- * Object-based format.
- */
-function normalizeProps (options, vm) {
-  var props = options.props;
-  if (!props) { return }
-  var res = {};
-  var i, val, name;
-  if (Array.isArray(props)) {
-    i = props.length;
-    while (i--) {
-      val = props[i];
-      if (typeof val === 'string') {
-        name = camelize(val);
-        res[name] = { type: null };
-      } else if (process.env.NODE_ENV !== 'production') {
-        warn('props must be strings when using array syntax.');
-      }
-    }
-  } else if (isPlainObject(props)) {
-    for (var key in props) {
-      val = props[key];
-      name = camelize(key);
-      res[name] = isPlainObject(val)
-        ? val
-        : { type: val };
-    }
-  } else if (process.env.NODE_ENV !== 'production') {
-    warn(
-      "Invalid value for option \"props\": expected an Array or an Object, " +
-      "but got " + (toRawType(props)) + ".",
-      vm
-    );
-  }
-  options.props = res;
-}
-
-/**
- * Normalize all injections into Object-based format
- */
-function normalizeInject (options, vm) {
-  var inject = options.inject;
-  if (!inject) { return }
-  var normalized = options.inject = {};
-  if (Array.isArray(inject)) {
-    for (var i = 0; i < inject.length; i++) {
-      normalized[inject[i]] = { from: inject[i] };
-    }
-  } else if (isPlainObject(inject)) {
-    for (var key in inject) {
-      var val = inject[key];
-      normalized[key] = isPlainObject(val)
-        ? extend({ from: key }, val)
-        : { from: val };
-    }
-  } else if (process.env.NODE_ENV !== 'production') {
-    warn(
-      "Invalid value for option \"inject\": expected an Array or an Object, " +
-      "but got " + (toRawType(inject)) + ".",
-      vm
-    );
-  }
-}
-
-/**
- * Normalize raw function directives into object format.
- */
-function normalizeDirectives (options) {
-  var dirs = options.directives;
-  if (dirs) {
-    for (var key in dirs) {
-      var def = dirs[key];
-      if (typeof def === 'function') {
-        dirs[key] = { bind: def, update: def };
-      }
-    }
-  }
-}
-
-function assertObjectType (name, value, vm) {
-  if (!isPlainObject(value)) {
-    warn(
-      "Invalid value for option \"" + name + "\": expected an Object, " +
-      "but got " + (toRawType(value)) + ".",
-      vm
-    );
-  }
-}
-
-/**
- * Merge two option objects into a new one.
- * Core utility used in both instantiation and inheritance.
- */
-function mergeOptions (
-  parent,
-  child,
-  vm
-) {
-  if (process.env.NODE_ENV !== 'production') {
-    checkComponents(child);
-  }
-
-  if (typeof child === 'function') {
-    child = child.options;
-  }
-
-  normalizeProps(child, vm);
-  normalizeInject(child, vm);
-  normalizeDirectives(child);
-
-  // Apply extends and mixins on the child options,
-  // but only if it is a raw options object that isn't
-  // the result of another mergeOptions call.
-  // Only merged options has the _base property.
-  if (!child._base) {
-    if (child.extends) {
-      parent = mergeOptions(parent, child.extends, vm);
-    }
-    if (child.mixins) {
-      for (var i = 0, l = child.mixins.length; i < l; i++) {
-        parent = mergeOptions(parent, child.mixins[i], vm);
-      }
-    }
-  }
-
-  var options = {};
-  var key;
-  for (key in parent) {
-    mergeField(key);
-  }
-  for (key in child) {
-    if (!hasOwn(parent, key)) {
-      mergeField(key);
-    }
-  }
-  function mergeField (key) {
-    var strat = strats[key] || defaultStrat;
-    options[key] = strat(parent[key], child[key], vm, key);
-  }
-  return options
-}
-
-/**
- * Resolve an asset.
- * This function is used because child instances need access
- * to assets defined in its ancestor chain.
- */
-function resolveAsset (
-  options,
-  type,
-  id,
-  warnMissing
-) {
-  /* istanbul ignore if */
-  if (typeof id !== 'string') {
-    return
-  }
-  var assets = options[type];
-  // check local registration variations first
-  if (hasOwn(assets, id)) { return assets[id] }
-  var camelizedId = camelize(id);
-  if (hasOwn(assets, camelizedId)) { return assets[camelizedId] }
-  var PascalCaseId = capitalize(camelizedId);
-  if (hasOwn(assets, PascalCaseId)) { return assets[PascalCaseId] }
-  // fallback to prototype chain
-  var res = assets[id] || assets[camelizedId] || assets[PascalCaseId];
-  if (process.env.NODE_ENV !== '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];
-  // boolean casting
-  var booleanIndex = getTypeIndex(Boolean, prop.type);
-  if (booleanIndex > -1) {
-    if (absent && !hasOwn(prop, 'default')) {
-      value = false;
-    } else if (value === '' || value === hyphenate(key)) {
-      // only cast empty string / same name to boolean if
-      // boolean has higher priority
-      var stringIndex = getTypeIndex(String, prop.type);
-      if (stringIndex < 0 || booleanIndex < stringIndex) {
-        value = true;
-      }
-    }
-  }
-  // check default value
-  if (value === undefined) {
-    value = getPropDefaultValue(vm, prop, key);
-    // since the default value is a fresh copy,
-    // make sure to observe it.
-    var prevShouldObserve = shouldObserve;
-    toggleObserving(true);
-    observe(value);
-    toggleObserving(prevShouldObserve);
-  }
-  if (
-    process.env.NODE_ENV !== 'production' &&
-    // skip validation for weex recycle-list child component props
-    !(false)
-  ) {
-    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 (process.env.NODE_ENV !== 'production' && isObject(def)) {
-    warn(
-      'Invalid default value for prop "' + key + '": ' +
-      'Props with type Object/Array must use a factory function ' +
-      'to return the default value.',
-      vm
-    );
-  }
-  // the raw prop value was also undefined from previous render,
-  // return previous default value to avoid unnecessary watcher trigger
-  if (vm && vm.$options.propsData &&
-    vm.$options.propsData[key] === undefined &&
-    vm._props[key] !== undefined
-  ) {
-    return vm._props[key]
-  }
-  // call factory function for non-Function types
-  // a value is Function if its prototype is function even across different execution context
-  return typeof def === 'function' && getType(prop.type) !== 'Function'
-    ? def.call(vm)
-    : def
-}
-
-/**
- * Assert whether a prop is valid.
- */
-function assertProp (
-  prop,
-  name,
-  value,
-  vm,
-  absent
-) {
-  if (prop.required && absent) {
-    warn(
-      'Missing required prop: "' + name + '"',
-      vm
-    );
-    return
-  }
-  if (value == null && !prop.required) {
-    return
-  }
-  var type = prop.type;
-  var valid = !type || type === true;
-  var expectedTypes = [];
-  if (type) {
-    if (!Array.isArray(type)) {
-      type = [type];
-    }
-    for (var i = 0; i < type.length && !valid; i++) {
-      var assertedType = assertType(value, type[i]);
-      expectedTypes.push(assertedType.expectedType || '');
-      valid = assertedType.valid;
-    }
-  }
-
-  if (!valid) {
-    warn(
-      getInvalidTypeMessage(name, value, expectedTypes),
-      vm
-    );
-    return
-  }
-  var validator = prop.validator;
-  if (validator) {
-    if (!validator(value)) {
-      warn(
-        'Invalid prop: custom validator check failed for prop "' + name + '".',
-        vm
-      );
-    }
-  }
-}
-
-var simpleCheckRE = /^(String|Number|Boolean|Function|Symbol)$/;
-
-function assertType (value, type) {
-  var valid;
-  var expectedType = getType(type);
-  if (simpleCheckRE.test(expectedType)) {
-    var t = typeof value;
-    valid = t === expectedType.toLowerCase();
-    // for primitive wrapper objects
-    if (!valid && t === 'object') {
-      valid = value instanceof type;
-    }
-  } else if (expectedType === 'Object') {
-    valid = isPlainObject(value);
-  } else if (expectedType === 'Array') {
-    valid = Array.isArray(value);
-  } else {
-    valid = value instanceof type;
-  }
-  return {
-    valid: valid,
-    expectedType: expectedType
-  }
-}
-
-/**
- * Use function string name to check built-in types,
- * because a simple equality check will fail when running
- * across different vms / iframes.
- */
-function getType (fn) {
-  var match = fn && fn.toString().match(/^\s*function (\w+)/);
-  return match ? match[1] : ''
-}
-
-function isSameType (a, b) {
-  return getType(a) === getType(b)
-}
-
-function getTypeIndex (type, expectedTypes) {
-  if (!Array.isArray(expectedTypes)) {
-    return isSameType(expectedTypes, type) ? 0 : -1
-  }
-  for (var i = 0, len = expectedTypes.length; i < len; i++) {
-    if (isSameType(expectedTypes[i], type)) {
-      return i
-    }
-  }
-  return -1
-}
-
-function getInvalidTypeMessage (name, value, expectedTypes) {
-  var message = "Invalid prop: type check failed for prop \"" + name + "\"." +
-    " Expected " + (expectedTypes.map(capitalize).join(', '));
-  var expectedType = expectedTypes[0];
-  var receivedType = toRawType(value);
-  var expectedValue = styleValue(value, expectedType);
-  var receivedValue = styleValue(value, receivedType);
-  // check if we need to specify expected value
-  if (expectedTypes.length === 1 &&
-      isExplicable(expectedType) &&
-      !isBoolean(expectedType, receivedType)) {
-    message += " with value " + expectedValue;
-  }
-  message += ", got " + receivedType + " ";
-  // check if we need to specify received value
-  if (isExplicable(receivedType)) {
-    message += "with value " + receivedValue + ".";
-  }
-  return message
-}
-
-function styleValue (value, type) {
-  if (type === 'String') {
-    return ("\"" + value + "\"")
-  } else if (type === 'Number') {
-    return ("" + (Number(value)))
-  } else {
-    return ("" + value)
-  }
-}
-
-function isExplicable (value) {
-  var explicitTypes = ['string', 'number', 'boolean'];
-  return explicitTypes.some(function (elem) { return value.toLowerCase() === elem; })
-}
-
-function isBoolean () {
-  var args = [], len = arguments.length;
-  while ( len-- ) args[ len ] = arguments[ len ];
-
-  return args.some(function (elem) { return elem.toLowerCase() === 'boolean'; })
-}
-
-/*  */
-
-function handleError (err, vm, info) {
-  if (vm) {
-    var cur = vm;
-    while ((cur = cur.$parent)) {
-      var hooks = cur.$options.errorCaptured;
-      if (hooks) {
-        for (var i = 0; i < hooks.length; i++) {
-          try {
-            var capture = hooks[i].call(cur, err, vm, info) === false;
-            if (capture) { return }
-          } catch (e) {
-            globalHandleError(e, cur, 'errorCaptured hook');
-          }
-        }
-      }
-    }
-  }
-  globalHandleError(err, vm, info);
-}
-
-function globalHandleError (err, vm, info) {
-  if (config.errorHandler) {
-    try {
-      return config.errorHandler.call(null, err, vm, info)
-    } catch (e) {
-      logError(e, null, 'config.errorHandler');
-    }
-  }
-  logError(err, vm, info);
-}
-
-function logError (err, vm, info) {
-  if (process.env.NODE_ENV !== 'production') {
-    warn(("Error in " + info + ": \"" + (err.toString()) + "\""), vm);
-  }
-  /* istanbul ignore else */
-  if ((inBrowser || inWeex) && typeof console !== 'undefined') {
-    console.error(err);
-  } else {
-    throw err
-  }
-}
-
-/*  */
-
-var callbacks = [];
-var pending = false;
-
-function flushCallbacks () {
-  pending = false;
-  var copies = callbacks.slice(0);
-  callbacks.length = 0;
-  for (var i = 0; i < copies.length; i++) {
-    copies[i]();
-  }
-}
-
-// Here we have async deferring wrappers using both microtasks and (macro) tasks.
-// In < 2.4 we used microtasks everywhere, but there are some scenarios where
-// microtasks have too high a priority and fire in between supposedly
-// sequential events (e.g. #4521, #6690) or even between bubbling of the same
-// event (#6566). However, using (macro) tasks everywhere also has subtle problems
-// when state is changed right before repaint (e.g. #6813, out-in transitions).
-// Here we use microtask by default, but expose a way to force (macro) task when
-// needed (e.g. in event handlers attached by v-on).
-var microTimerFunc;
-var macroTimerFunc;
-var useMacroTask = false;
-
-// Determine (macro) task defer implementation.
-// Technically setImmediate should be the ideal choice, but it's only available
-// in IE. The only polyfill that consistently queues the callback after all DOM
-// events triggered in the same loop is by using MessageChannel.
-/* istanbul ignore if */
-if (typeof setImmediate !== 'undefined' && isNative(setImmediate)) {
-  macroTimerFunc = function () {
-    setImmediate(flushCallbacks);
-  };
-} else if (typeof MessageChannel !== 'undefined' && (
-  isNative(MessageChannel) ||
-  // PhantomJS
-  MessageChannel.toString() === '[object MessageChannelConstructor]'
-)) {
-  var channel = new MessageChannel();
-  var port = channel.port2;
-  channel.port1.onmessage = flushCallbacks;
-  macroTimerFunc = function () {
-    port.postMessage(1);
-  };
-} else {
-  /* istanbul ignore next */
-  macroTimerFunc = function () {
-    setTimeout(flushCallbacks, 0);
-  };
-}
-
-// Determine microtask defer implementation.
-/* istanbul ignore next, $flow-disable-line */
-if (typeof Promise !== 'undefined' && isNative(Promise)) {
-  var p = Promise.resolve();
-  microTimerFunc = function () {
-    p.then(flushCallbacks);
-    // in problematic UIWebViews, Promise.then doesn't completely break, but
-    // it can get stuck in a weird state where callbacks are pushed into the
-    // microtask queue but the queue isn't being flushed, until the browser
-    // needs to do some other work, e.g. handle a timer. Therefore we can
-    // "force" the microtask queue to be flushed by adding an empty timer.
-    if (isIOS) { setTimeout(noop); }
-  };
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./vue.common.prod.js')
 } else {
-  // fallback to macro
-  microTimerFunc = macroTimerFunc;
-}
-
-/**
- * Wrap a function so that if any code inside triggers state change,
- * the changes are queued using a (macro) task instead of a microtask.
- */
-function withMacroTask (fn) {
-  return fn._withTask || (fn._withTask = function () {
-    useMacroTask = true;
-    try {
-      return fn.apply(null, arguments)
-    } finally {
-      useMacroTask = false;
-    }
-  })
-}
-
-function nextTick (cb, ctx) {
-  var _resolve;
-  callbacks.push(function () {
-    if (cb) {
-      try {
-        cb.call(ctx);
-      } catch (e) {
-        handleError(e, ctx, 'nextTick');
-      }
-    } else if (_resolve) {
-      _resolve(ctx);
-    }
-  });
-  if (!pending) {
-    pending = true;
-    if (useMacroTask) {
-      macroTimerFunc();
-    } else {
-      microTimerFunc();
-    }
-  }
-  // $flow-disable-line
-  if (!cb && typeof Promise !== 'undefined') {
-    return new Promise(function (resolve) {
-      _resolve = resolve;
-    })
-  }
-}
-
-/*  */
-
-var mark;
-var measure;
-
-if (process.env.NODE_ENV !== 'production') {
-  var perf = inBrowser && window.performance;
-  /* istanbul ignore if */
-  if (
-    perf &&
-    perf.mark &&
-    perf.measure &&
-    perf.clearMarks &&
-    perf.clearMeasures
-  ) {
-    mark = function (tag) { return perf.mark(tag); };
-    measure = function (name, startTag, endTag) {
-      perf.measure(name, startTag, endTag);
-      perf.clearMarks(startTag);
-      perf.clearMarks(endTag);
-      perf.clearMeasures(name);
-    };
-  }
-}
-
-/* not type checking this file because flow doesn't play well with Proxy */
-
-var initProxy;
-
-if (process.env.NODE_ENV !== 'production') {
-  var allowedGlobals = makeMap(
-    'Infinity,undefined,NaN,isFinite,isNaN,' +
-    'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' +
-    'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,' +
-    'require' // for Webpack/Browserify
-  );
-
-  var warnNonPresent = function (target, key) {
-    warn(
-      "Property or method \"" + key + "\" is not defined on the instance but " +
-      'referenced during render. Make sure that this property is reactive, ' +
-      'either in the data option, or for class-based components, by ' +
-      'initializing the property. ' +
-      'See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.',
-      target
-    );
-  };
-
-  var warnReservedPrefix = function (target, key) {
-    warn(
-      "Property \"" + key + "\" must be accessed with \"$data." + key + "\" because " +
-      'properties starting with "$" or "_" are not proxied in the Vue instance to ' +
-      'prevent conflicts with Vue internals' +
-      'See: https://vuejs.org/v2/api/#data',
-      target
-    );
-  };
-
-  var hasProxy =
-    typeof Proxy !== 'undefined' && isNative(Proxy);
-
-  if (hasProxy) {
-    var isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta,exact');
-    config.keyCodes = new Proxy(config.keyCodes, {
-      set: function set (target, key, value) {
-        if (isBuiltInModifier(key)) {
-          warn(("Avoid overwriting built-in modifier in config.keyCodes: ." + key));
-          return false
-        } else {
-          target[key] = value;
-          return true
-        }
-      }
-    });
-  }
-
-  var hasHandler = {
-    has: function has (target, key) {
-      var has = key in target;
-      var isAllowed = allowedGlobals(key) ||
-        (typeof key === 'string' && key.charAt(0) === '_' && !(key in target.$data));
-      if (!has && !isAllowed) {
-        if (key in target.$data) { warnReservedPrefix(target, key); }
-        else { warnNonPresent(target, key); }
-      }
-      return has || !isAllowed
-    }
-  };
-
-  var getHandler = {
-    get: function get (target, key) {
-      if (typeof key === 'string' && !(key in target)) {
-        if (key in target.$data) { warnReservedPrefix(target, key); }
-        else { warnNonPresent(target, key); }
-      }
-      return target[key]
-    }
-  };
-
-  initProxy = function initProxy (vm) {
-    if (hasProxy) {
-      // determine which proxy handler to use
-      var options = vm.$options;
-      var handlers = options.render && options.render._withStripped
-        ? getHandler
-        : hasHandler;
-      vm._renderProxy = new Proxy(vm, handlers);
-    } else {
-      vm._renderProxy = vm;
-    }
-  };
-}
-
-/*  */
-
-var seenObjects = new _Set();
-
-/**
- * Recursively traverse an object to evoke all converted
- * getters, so that every nested property inside the object
- * is collected as a "deep" dependency.
- */
-function traverse (val) {
-  _traverse(val, seenObjects);
-  seenObjects.clear();
-}
-
-function _traverse (val, seen) {
-  var i, keys;
-  var isA = Array.isArray(val);
-  if ((!isA && !isObject(val)) || Object.isFrozen(val) || val instanceof VNode) {
-    return
-  }
-  if (val.__ob__) {
-    var depId = val.__ob__.dep.id;
-    if (seen.has(depId)) {
-      return
-    }
-    seen.add(depId);
-  }
-  if (isA) {
-    i = val.length;
-    while (i--) { _traverse(val[i], seen); }
-  } else {
-    keys = Object.keys(val);
-    i = keys.length;
-    while (i--) { _traverse(val[keys[i]], seen); }
-  }
-}
-
-/*  */
-
-var normalizeEvent = cached(function (name) {
-  var passive = name.charAt(0) === '&';
-  name = passive ? name.slice(1) : name;
-  var once$$1 = name.charAt(0) === '~'; // Prefixed last, checked first
-  name = once$$1 ? name.slice(1) : name;
-  var capture = name.charAt(0) === '!';
-  name = capture ? name.slice(1) : name;
-  return {
-    name: name,
-    once: once$$1,
-    capture: capture,
-    passive: passive
-  }
-});
-
-function createFnInvoker (fns) {
-  function invoker () {
-    var arguments$1 = arguments;
-
-    var fns = invoker.fns;
-    if (Array.isArray(fns)) {
-      var cloned = fns.slice();
-      for (var i = 0; i < cloned.length; i++) {
-        cloned[i].apply(null, arguments$1);
-      }
-    } else {
-      // return handler return value for single handlers
-      return fns.apply(null, arguments)
-    }
-  }
-  invoker.fns = fns;
-  return invoker
-}
-
-function updateListeners (
-  on,
-  oldOn,
-  add,
-  remove$$1,
-  createOnceHandler,
-  vm
-) {
-  var name, def$$1, cur, old, event;
-  for (name in on) {
-    def$$1 = cur = on[name];
-    old = oldOn[name];
-    event = normalizeEvent(name);
-    if (isUndef(cur)) {
-      process.env.NODE_ENV !== 'production' && warn(
-        "Invalid handler for event \"" + (event.name) + "\": got " + String(cur),
-        vm
-      );
-    } else if (isUndef(old)) {
-      if (isUndef(cur.fns)) {
-        cur = on[name] = createFnInvoker(cur);
-      }
-      if (isTrue(event.once)) {
-        cur = on[name] = createOnceHandler(event.name, cur, event.capture);
-      }
-      add(event.name, cur, event.capture, event.passive, event.params);
-    } else if (cur !== old) {
-      old.fns = cur;
-      on[name] = old;
-    }
-  }
-  for (name in oldOn) {
-    if (isUndef(on[name])) {
-      event = normalizeEvent(name);
-      remove$$1(event.name, oldOn[name], event.capture);
-    }
-  }
-}
-
-/*  */
-
-function mergeVNodeHook (def, hookKey, hook) {
-  if (def instanceof VNode) {
-    def = def.data.hook || (def.data.hook = {});
-  }
-  var invoker;
-  var oldHook = def[hookKey];
-
-  function wrappedHook () {
-    hook.apply(this, arguments);
-    // important: remove merged hook to ensure it's called only once
-    // and prevent memory leak
-    remove(invoker.fns, wrappedHook);
-  }
-
-  if (isUndef(oldHook)) {
-    // no existing hook
-    invoker = createFnInvoker([wrappedHook]);
-  } else {
-    /* istanbul ignore if */
-    if (isDef(oldHook.fns) && isTrue(oldHook.merged)) {
-      // already a merged invoker
-      invoker = oldHook;
-      invoker.fns.push(wrappedHook);
-    } else {
-      // existing plain hook
-      invoker = createFnInvoker([oldHook, wrappedHook]);
-    }
-  }
-
-  invoker.merged = true;
-  def[hookKey] = invoker;
-}
-
-/*  */
-
-function extractPropsFromVNodeData (
-  data,
-  Ctor,
-  tag
-) {
-  // we are only extracting raw values here.
-  // validation and default values are handled in the child
-  // component itself.
-  var propOptions = Ctor.options.props;
-  if (isUndef(propOptions)) {
-    return
-  }
-  var res = {};
-  var attrs = data.attrs;
-  var props = data.props;
-  if (isDef(attrs) || isDef(props)) {
-    for (var key in propOptions) {
-      var altKey = hyphenate(key);
-      if (process.env.NODE_ENV !== 'production') {
-        var keyInLowerCase = key.toLowerCase();
-        if (
-          key !== keyInLowerCase &&
-          attrs && hasOwn(attrs, keyInLowerCase)
-        ) {
-          tip(
-            "Prop \"" + keyInLowerCase + "\" is passed to component " +
-            (formatComponentName(tag || Ctor)) + ", but the declared prop name is" +
-            " \"" + key + "\". " +
-            "Note that HTML attributes are case-insensitive and camelCased " +
-            "props need to use their kebab-case equivalents when using in-DOM " +
-            "templates. You should probably use \"" + altKey + "\" instead of \"" + key + "\"."
-          );
-        }
-      }
-      checkProp(res, props, key, altKey, true) ||
-      checkProp(res, attrs, key, altKey, false);
-    }
-  }
-  return res
-}
-
-function checkProp (
-  res,
-  hash,
-  key,
-  altKey,
-  preserve
-) {
-  if (isDef(hash)) {
-    if (hasOwn(hash, key)) {
-      res[key] = hash[key];
-      if (!preserve) {
-        delete hash[key];
-      }
-      return true
-    } else if (hasOwn(hash, altKey)) {
-      res[key] = hash[altKey];
-      if (!preserve) {
-        delete hash[altKey];
-      }
-      return true
-    }
-  }
-  return false
-}
-
-/*  */
-
-// The template compiler attempts to minimize the need for normalization by
-// statically analyzing the template at compile time.
-//
-// For plain HTML markup, normalization can be completely skipped because the
-// generated render function is guaranteed to return Array<VNode>. There are
-// two cases where extra normalization is needed:
-
-// 1. When the children contains components - because a functional component
-// may return an Array instead of a single root. In this case, just a simple
-// normalization is needed - if any child is an Array, we flatten the whole
-// thing with Array.prototype.concat. It is guaranteed to be only 1-level deep
-// because functional components already normalize their own children.
-function simpleNormalizeChildren (children) {
-  for (var i = 0; i < children.length; i++) {
-    if (Array.isArray(children[i])) {
-      return Array.prototype.concat.apply([], children)
-    }
-  }
-  return children
-}
-
-// 2. When the children contains constructs that always generated nested Arrays,
-// e.g. <template>, <slot>, v-for, or when the children is provided by user
-// with hand-written render functions / JSX. In such cases a full normalization
-// is needed to cater to all possible types of children values.
-function normalizeChildren (children) {
-  return isPrimitive(children)
-    ? [createTextVNode(children)]
-    : Array.isArray(children)
-      ? normalizeArrayChildren(children)
-      : undefined
-}
-
-function isTextNode (node) {
-  return isDef(node) && isDef(node.text) && isFalse(node.isComment)
-}
-
-function normalizeArrayChildren (children, nestedIndex) {
-  var res = [];
-  var i, c, lastIndex, last;
-  for (i = 0; i < children.length; i++) {
-    c = children[i];
-    if (isUndef(c) || typeof c === 'boolean') { continue }
-    lastIndex = res.length - 1;
-    last = res[lastIndex];
-    //  nested
-    if (Array.isArray(c)) {
-      if (c.length > 0) {
-        c = normalizeArrayChildren(c, ((nestedIndex || '') + "_" + i));
-        // merge adjacent text nodes
-        if (isTextNode(c[0]) && isTextNode(last)) {
-          res[lastIndex] = createTextVNode(last.text + (c[0]).text);
-          c.shift();
-        }
-        res.push.apply(res, c);
-      }
-    } else if (isPrimitive(c)) {
-      if (isTextNode(last)) {
-        // merge adjacent text nodes
-        // this is necessary for SSR hydration because text nodes are
-        // essentially merged when rendered to HTML strings
-        res[lastIndex] = createTextVNode(last.text + c);
-      } else if (c !== '') {
-        // convert primitive to vnode
-        res.push(createTextVNode(c));
-      }
-    } else {
-      if (isTextNode(c) && isTextNode(last)) {
-        // merge adjacent text nodes
-        res[lastIndex] = createTextVNode(last.text + c.text);
-      } else {
-        // default key for nested array children (likely generated by v-for)
-        if (isTrue(children._isVList) &&
-          isDef(c.tag) &&
-          isUndef(c.key) &&
-          isDef(nestedIndex)) {
-          c.key = "__vlist" + nestedIndex + "_" + i + "__";
-        }
-        res.push(c);
-      }
-    }
-  }
-  return res
-}
-
-/*  */
-
-function ensureCtor (comp, base) {
-  if (
-    comp.__esModule ||
-    (hasSymbol && comp[Symbol.toStringTag] === 'Module')
-  ) {
-    comp = comp.default;
-  }
-  return isObject(comp)
-    ? base.extend(comp)
-    : comp
-}
-
-function createAsyncPlaceholder (
-  factory,
-  data,
-  context,
-  children,
-  tag
-) {
-  var node = createEmptyVNode();
-  node.asyncFactory = factory;
-  node.asyncMeta = { data: data, context: context, children: children, tag: tag };
-  return node
-}
-
-function resolveAsyncComponent (
-  factory,
-  baseCtor,
-  context
-) {
-  if (isTrue(factory.error) && isDef(factory.errorComp)) {
-    return factory.errorComp
-  }
-
-  if (isDef(factory.resolved)) {
-    return factory.resolved
-  }
-
-  if (isTrue(factory.loading) && isDef(factory.loadingComp)) {
-    return factory.loadingComp
-  }
-
-  if (isDef(factory.contexts)) {
-    // already pending
-    factory.contexts.push(context);
-  } else {
-    var contexts = factory.contexts = [context];
-    var sync = true;
-
-    var forceRender = function (renderCompleted) {
-      for (var i = 0, l = contexts.length; i < l; i++) {
-        contexts[i].$forceUpdate();
-      }
-
-      if (renderCompleted) {
-        contexts.length = 0;
-      }
-    };
-
-    var resolve = once(function (res) {
-      // cache resolved
-      factory.resolved = ensureCtor(res, baseCtor);
-      // invoke callbacks only if this is not a synchronous resolve
-      // (async resolves are shimmed as synchronous during SSR)
-      if (!sync) {
-        forceRender(true);
-      } else {
-        contexts.length = 0;
-      }
-    });
-
-    var reject = once(function (reason) {
-      process.env.NODE_ENV !== 'production' && warn(
-        "Failed to resolve async component: " + (String(factory)) +
-        (reason ? ("\nReason: " + reason) : '')
-      );
-      if (isDef(factory.errorComp)) {
-        factory.error = true;
-        forceRender(true);
-      }
-    });
-
-    var res = factory(resolve, reject);
-
-    if (isObject(res)) {
-      if (typeof res.then === 'function') {
-        // () => Promise
-        if (isUndef(factory.resolved)) {
-          res.then(resolve, reject);
-        }
-      } else if (isDef(res.component) && typeof res.component.then === 'function') {
-        res.component.then(resolve, reject);
-
-        if (isDef(res.error)) {
-          factory.errorComp = ensureCtor(res.error, baseCtor);
-        }
-
-        if (isDef(res.loading)) {
-          factory.loadingComp = ensureCtor(res.loading, baseCtor);
-          if (res.delay === 0) {
-            factory.loading = true;
-          } else {
-            setTimeout(function () {
-              if (isUndef(factory.resolved) && isUndef(factory.error)) {
-                factory.loading = true;
-                forceRender(false);
-              }
-            }, res.delay || 200);
-          }
-        }
-
-        if (isDef(res.timeout)) {
-          setTimeout(function () {
-            if (isUndef(factory.resolved)) {
-              reject(
-                process.env.NODE_ENV !== 'production'
-                  ? ("timeout (" + (res.timeout) + "ms)")
-                  : null
-              );
-            }
-          }, res.timeout);
-        }
-      }
-    }
-
-    sync = false;
-    // return in case resolved synchronously
-    return factory.loading
-      ? factory.loadingComp
-      : factory.resolved
-  }
-}
-
-/*  */
-
-function isAsyncPlaceholder (node) {
-  return node.isComment && node.asyncFactory
-}
-
-/*  */
-
-function getFirstComponentChild (children) {
-  if (Array.isArray(children)) {
-    for (var i = 0; i < children.length; i++) {
-      var c = children[i];
-      if (isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) {
-        return c
-      }
-    }
-  }
-}
-
-/*  */
-
-/*  */
-
-function initEvents (vm) {
-  vm._events = Object.create(null);
-  vm._hasHookEvent = false;
-  // init parent attached events
-  var listeners = vm.$options._parentListeners;
-  if (listeners) {
-    updateComponentListeners(vm, listeners);
-  }
-}
-
-var target;
-
-function add (event, fn) {
-  target.$on(event, fn);
-}
-
-function remove$1 (event, fn) {
-  target.$off(event, fn);
-}
-
-function createOnceHandler (event, fn) {
-  var _target = target;
-  return function onceHandler () {
-    var res = fn.apply(null, arguments);
-    if (res !== null) {
-      _target.$off(event, onceHandler);
-    }
-  }
-}
-
-function updateComponentListeners (
-  vm,
-  listeners,
-  oldListeners
-) {
-  target = vm;
-  updateListeners(listeners, oldListeners || {}, add, remove$1, createOnceHandler, vm);
-  target = undefined;
-}
-
-function eventsMixin (Vue) {
-  var hookRE = /^hook:/;
-  Vue.prototype.$on = function (event, fn) {
-    var vm = this;
-    if (Array.isArray(event)) {
-      for (var i = 0, l = event.length; i < l; i++) {
-        vm.$on(event[i], fn);
-      }
-    } else {
-      (vm._events[event] || (vm._events[event] = [])).push(fn);
-      // optimize hook:event cost by using a boolean flag marked at registration
-      // instead of a hash lookup
-      if (hookRE.test(event)) {
-        vm._hasHookEvent = true;
-      }
-    }
-    return vm
-  };
-
-  Vue.prototype.$once = function (event, fn) {
-    var vm = this;
-    function on () {
-      vm.$off(event, on);
-      fn.apply(vm, arguments);
-    }
-    on.fn = fn;
-    vm.$on(event, on);
-    return vm
-  };
-
-  Vue.prototype.$off = function (event, fn) {
-    var vm = this;
-    // all
-    if (!arguments.length) {
-      vm._events = Object.create(null);
-      return vm
-    }
-    // array of events
-    if (Array.isArray(event)) {
-      for (var i$1 = 0, l = event.length; i$1 < l; i$1++) {
-        vm.$off(event[i$1], fn);
-      }
-      return vm
-    }
-    // specific event
-    var cbs = vm._events[event];
-    if (!cbs) {
-      return vm
-    }
-    if (!fn) {
-      vm._events[event] = null;
-      return vm
-    }
-    // specific handler
-    var cb;
-    var i = cbs.length;
-    while (i--) {
-      cb = cbs[i];
-      if (cb === fn || cb.fn === fn) {
-        cbs.splice(i, 1);
-        break
-      }
-    }
-    return vm
-  };
-
-  Vue.prototype.$emit = function (event) {
-    var vm = this;
-    if (process.env.NODE_ENV !== 'production') {
-      var lowerCaseEvent = event.toLowerCase();
-      if (lowerCaseEvent !== event && vm._events[lowerCaseEvent]) {
-        tip(
-          "Event \"" + lowerCaseEvent + "\" is emitted in component " +
-          (formatComponentName(vm)) + " but the handler is registered for \"" + event + "\". " +
-          "Note that HTML attributes are case-insensitive and you cannot use " +
-          "v-on to listen to camelCase events when using in-DOM templates. " +
-          "You should probably use \"" + (hyphenate(event)) + "\" instead of \"" + event + "\"."
-        );
-      }
-    }
-    var cbs = vm._events[event];
-    if (cbs) {
-      cbs = cbs.length > 1 ? toArray(cbs) : cbs;
-      var args = toArray(arguments, 1);
-      for (var i = 0, l = cbs.length; i < l; i++) {
-        try {
-          cbs[i].apply(vm, args);
-        } catch (e) {
-          handleError(e, vm, ("event handler for \"" + event + "\""));
-        }
-      }
-    }
-    return vm
-  };
-}
-
-/*  */
-
-
-
-/**
- * Runtime helper for resolving raw children VNodes into a slot object.
- */
-function resolveSlots (
-  children,
-  context
-) {
-  var slots = {};
-  if (!children) {
-    return slots
-  }
-  for (var i = 0, l = children.length; i < l; i++) {
-    var child = children[i];
-    var data = child.data;
-    // remove slot attribute if the node is resolved as a Vue slot node
-    if (data && data.attrs && data.attrs.slot) {
-      delete data.attrs.slot;
-    }
-    // named slots should only be respected if the vnode was rendered in the
-    // same context.
-    if ((child.context === context || child.fnContext === context) &&
-      data && data.slot != null
-    ) {
-      var name = data.slot;
-      var slot = (slots[name] || (slots[name] = []));
-      if (child.tag === 'template') {
-        slot.push.apply(slot, child.children || []);
-      } else {
-        slot.push(child);
-      }
-    } else {
-      (slots.default || (slots.default = [])).push(child);
-    }
-  }
-  // ignore slots that contains only whitespace
-  for (var name$1 in slots) {
-    if (slots[name$1].every(isWhitespace)) {
-      delete slots[name$1];
-    }
-  }
-  return slots
-}
-
-function isWhitespace (node) {
-  return (node.isComment && !node.asyncFactory) || node.text === ' '
-}
-
-function resolveScopedSlots (
-  fns, // see flow/vnode
-  res
-) {
-  res = res || {};
-  for (var i = 0; i < fns.length; i++) {
-    if (Array.isArray(fns[i])) {
-      resolveScopedSlots(fns[i], res);
-    } else {
-      res[fns[i].key] = fns[i].fn;
-    }
-  }
-  return res
-}
-
-/*  */
-
-var activeInstance = null;
-var isUpdatingChildComponent = false;
-
-function setActiveInstance(vm) {
-  var prevActiveInstance = activeInstance;
-  activeInstance = vm;
-  return function () {
-    activeInstance = prevActiveInstance;
-  }
-}
-
-function initLifecycle (vm) {
-  var options = vm.$options;
-
-  // locate first non-abstract parent
-  var parent = options.parent;
-  if (parent && !options.abstract) {
-    while (parent.$options.abstract && parent.$parent) {
-      parent = parent.$parent;
-    }
-    parent.$children.push(vm);
-  }
-
-  vm.$parent = parent;
-  vm.$root = parent ? parent.$root : vm;
-
-  vm.$children = [];
-  vm.$refs = {};
-
-  vm._watcher = null;
-  vm._inactive = null;
-  vm._directInactive = false;
-  vm._isMounted = false;
-  vm._isDestroyed = false;
-  vm._isBeingDestroyed = false;
-}
-
-function lifecycleMixin (Vue) {
-  Vue.prototype._update = function (vnode, hydrating) {
-    var vm = this;
-    var prevEl = vm.$el;
-    var prevVnode = vm._vnode;
-    var restoreActiveInstance = setActiveInstance(vm);
-    vm._vnode = vnode;
-    // Vue.prototype.__patch__ is injected in entry points
-    // based on the rendering backend used.
-    if (!prevVnode) {
-      // initial render
-      vm.$el = vm.__patch__(vm.$el, vnode, hydrating, false /* removeOnly */);
-    } else {
-      // updates
-      vm.$el = vm.__patch__(prevVnode, vnode);
-    }
-    restoreActiveInstance();
-    // update __vue__ reference
-    if (prevEl) {
-      prevEl.__vue__ = null;
-    }
-    if (vm.$el) {
-      vm.$el.__vue__ = vm;
-    }
-    // if parent is an HOC, update its $el as well
-    if (vm.$vnode && vm.$parent && vm.$vnode === vm.$parent._vnode) {
-      vm.$parent.$el = vm.$el;
-    }
-    // updated hook is called by the scheduler to ensure that children are
-    // updated in a parent's updated hook.
-  };
-
-  Vue.prototype.$forceUpdate = function () {
-    var vm = this;
-    if (vm._watcher) {
-      vm._watcher.update();
-    }
-  };
-
-  Vue.prototype.$destroy = function () {
-    var vm = this;
-    if (vm._isBeingDestroyed) {
-      return
-    }
-    callHook(vm, 'beforeDestroy');
-    vm._isBeingDestroyed = true;
-    // remove self from parent
-    var parent = vm.$parent;
-    if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) {
-      remove(parent.$children, vm);
-    }
-    // teardown watchers
-    if (vm._watcher) {
-      vm._watcher.teardown();
-    }
-    var i = vm._watchers.length;
-    while (i--) {
-      vm._watchers[i].teardown();
-    }
-    // remove reference from data ob
-    // frozen object may not have observer.
-    if (vm._data.__ob__) {
-      vm._data.__ob__.vmCount--;
-    }
-    // call the last hook...
-    vm._isDestroyed = true;
-    // invoke destroy hooks on current rendered tree
-    vm.__patch__(vm._vnode, null);
-    // fire destroyed hook
-    callHook(vm, 'destroyed');
-    // turn off all instance listeners.
-    vm.$off();
-    // remove __vue__ reference
-    if (vm.$el) {
-      vm.$el.__vue__ = null;
-    }
-    // release circular reference (#6759)
-    if (vm.$vnode) {
-      vm.$vnode.parent = null;
-    }
-  };
-}
-
-function mountComponent (
-  vm,
-  el,
-  hydrating
-) {
-  vm.$el = el;
-  if (!vm.$options.render) {
-    vm.$options.render = createEmptyVNode;
-    if (process.env.NODE_ENV !== 'production') {
-      /* istanbul ignore if */
-      if ((vm.$options.template && vm.$options.template.charAt(0) !== '#') ||
-        vm.$options.el || el) {
-        warn(
-          'You are using the runtime-only build of Vue where the template ' +
-          'compiler is not available. Either pre-compile the templates into ' +
-          'render functions, or use the compiler-included build.',
-          vm
-        );
-      } else {
-        warn(
-          'Failed to mount component: template or render function not defined.',
-          vm
-        );
-      }
-    }
-  }
-  callHook(vm, 'beforeMount');
-
-  var updateComponent;
-  /* istanbul ignore if */
-  if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
-    updateComponent = function () {
-      var name = vm._name;
-      var id = vm._uid;
-      var startTag = "vue-perf-start:" + id;
-      var endTag = "vue-perf-end:" + id;
-
-      mark(startTag);
-      var vnode = vm._render();
-      mark(endTag);
-      measure(("vue " + name + " render"), startTag, endTag);
-
-      mark(startTag);
-      vm._update(vnode, hydrating);
-      mark(endTag);
-      measure(("vue " + name + " patch"), startTag, endTag);
-    };
-  } else {
-    updateComponent = function () {
-      vm._update(vm._render(), hydrating);
-    };
-  }
-
-  // we set this to vm._watcher inside the watcher's constructor
-  // since the watcher's initial patch may call $forceUpdate (e.g. inside child
-  // component's mounted hook), which relies on vm._watcher being already defined
-  new Watcher(vm, updateComponent, noop, {
-    before: function before () {
-      if (vm._isMounted && !vm._isDestroyed) {
-        callHook(vm, 'beforeUpdate');
-      }
-    }
-  }, true /* isRenderWatcher */);
-  hydrating = false;
-
-  // manually mounted instance, call mounted on self
-  // mounted is called for render-created child components in its inserted hook
-  if (vm.$vnode == null) {
-    vm._isMounted = true;
-    callHook(vm, 'mounted');
-  }
-  return vm
-}
-
-function updateChildComponent (
-  vm,
-  propsData,
-  listeners,
-  parentVnode,
-  renderChildren
-) {
-  if (process.env.NODE_ENV !== 'production') {
-    isUpdatingChildComponent = true;
-  }
-
-  // determine whether component has slot children
-  // we need to do this before overwriting $options._renderChildren
-  var hasChildren = !!(
-    renderChildren ||               // has new static slots
-    vm.$options._renderChildren ||  // has old static slots
-    parentVnode.data.scopedSlots || // has new scoped slots
-    vm.$scopedSlots !== emptyObject // has old scoped slots
-  );
-
-  vm.$options._parentVnode = parentVnode;
-  vm.$vnode = parentVnode; // update vm's placeholder node without re-render
-
-  if (vm._vnode) { // update child tree's parent
-    vm._vnode.parent = parentVnode;
-  }
-  vm.$options._renderChildren = renderChildren;
-
-  // update $attrs and $listeners hash
-  // these are also reactive so they may trigger child update if the child
-  // used them during render
-  vm.$attrs = parentVnode.data.attrs || emptyObject;
-  vm.$listeners = listeners || emptyObject;
-
-  // update props
-  if (propsData && vm.$options.props) {
-    toggleObserving(false);
-    var props = vm._props;
-    var propKeys = vm.$options._propKeys || [];
-    for (var i = 0; i < propKeys.length; i++) {
-      var key = propKeys[i];
-      var propOptions = vm.$options.props; // wtf flow?
-      props[key] = validateProp(key, propOptions, propsData, vm);
-    }
-    toggleObserving(true);
-    // keep a copy of raw propsData
-    vm.$options.propsData = propsData;
-  }
-
-  // update listeners
-  listeners = listeners || emptyObject;
-  var oldListeners = vm.$options._parentListeners;
-  vm.$options._parentListeners = listeners;
-  updateComponentListeners(vm, listeners, oldListeners);
-
-  // resolve slots + force update if has children
-  if (hasChildren) {
-    vm.$slots = resolveSlots(renderChildren, parentVnode.context);
-    vm.$forceUpdate();
-  }
-
-  if (process.env.NODE_ENV !== 'production') {
-    isUpdatingChildComponent = false;
-  }
-}
-
-function isInInactiveTree (vm) {
-  while (vm && (vm = vm.$parent)) {
-    if (vm._inactive) { return true }
-  }
-  return false
-}
-
-function activateChildComponent (vm, direct) {
-  if (direct) {
-    vm._directInactive = false;
-    if (isInInactiveTree(vm)) {
-      return
-    }
-  } else if (vm._directInactive) {
-    return
-  }
-  if (vm._inactive || vm._inactive === null) {
-    vm._inactive = false;
-    for (var i = 0; i < vm.$children.length; i++) {
-      activateChildComponent(vm.$children[i]);
-    }
-    callHook(vm, 'activated');
-  }
-}
-
-function deactivateChildComponent (vm, direct) {
-  if (direct) {
-    vm._directInactive = true;
-    if (isInInactiveTree(vm)) {
-      return
-    }
-  }
-  if (!vm._inactive) {
-    vm._inactive = true;
-    for (var i = 0; i < vm.$children.length; i++) {
-      deactivateChildComponent(vm.$children[i]);
-    }
-    callHook(vm, 'deactivated');
-  }
-}
-
-function callHook (vm, hook) {
-  // #7573 disable dep collection when invoking lifecycle hooks
-  pushTarget();
-  var handlers = vm.$options[hook];
-  if (handlers) {
-    for (var i = 0, j = handlers.length; i < j; i++) {
-      try {
-        handlers[i].call(vm);
-      } catch (e) {
-        handleError(e, vm, (hook + " hook"));
-      }
-    }
-  }
-  if (vm._hasHookEvent) {
-    vm.$emit('hook:' + hook);
-  }
-  popTarget();
-}
-
-/*  */
-
-var MAX_UPDATE_COUNT = 100;
-
-var queue = [];
-var activatedChildren = [];
-var has = {};
-var circular = {};
-var waiting = false;
-var flushing = false;
-var index = 0;
-
-/**
- * Reset the scheduler's state.
- */
-function resetSchedulerState () {
-  index = queue.length = activatedChildren.length = 0;
-  has = {};
-  if (process.env.NODE_ENV !== 'production') {
-    circular = {};
-  }
-  waiting = flushing = false;
-}
-
-/**
- * Flush both queues and run the watchers.
- */
-function flushSchedulerQueue () {
-  flushing = true;
-  var watcher, id;
-
-  // Sort queue before flush.
-  // This ensures that:
-  // 1. Components are updated from parent to child. (because parent is always
-  //    created before the child)
-  // 2. A component's user watchers are run before its render watcher (because
-  //    user watchers are created before the render watcher)
-  // 3. If a component is destroyed during a parent component's watcher run,
-  //    its watchers can be skipped.
-  queue.sort(function (a, b) { return a.id - b.id; });
-
-  // do not cache length because more watchers might be pushed
-  // as we run existing watchers
-  for (index = 0; index < queue.length; index++) {
-    watcher = queue[index];
-    if (watcher.before) {
-      watcher.before();
-    }
-    id = watcher.id;
-    has[id] = null;
-    watcher.run();
-    // in dev build, check and stop circular updates.
-    if (process.env.NODE_ENV !== 'production' && has[id] != null) {
-      circular[id] = (circular[id] || 0) + 1;
-      if (circular[id] > MAX_UPDATE_COUNT) {
-        warn(
-          'You may have an infinite update loop ' + (
-            watcher.user
-              ? ("in watcher with expression \"" + (watcher.expression) + "\"")
-              : "in a component render function."
-          ),
-          watcher.vm
-        );
-        break
-      }
-    }
-  }
-
-  // keep copies of post queues before resetting state
-  var activatedQueue = activatedChildren.slice();
-  var updatedQueue = queue.slice();
-
-  resetSchedulerState();
-
-  // call component updated and activated hooks
-  callActivatedHooks(activatedQueue);
-  callUpdatedHooks(updatedQueue);
-
-  // devtool hook
-  /* istanbul ignore if */
-  if (devtools && config.devtools) {
-    devtools.emit('flush');
-  }
-}
-
-function callUpdatedHooks (queue) {
-  var i = queue.length;
-  while (i--) {
-    var watcher = queue[i];
-    var vm = watcher.vm;
-    if (vm._watcher === watcher && vm._isMounted && !vm._isDestroyed) {
-      callHook(vm, 'updated');
-    }
-  }
-}
-
-/**
- * Queue a kept-alive component that was activated during patch.
- * The queue will be processed after the entire tree has been patched.
- */
-function queueActivatedComponent (vm) {
-  // setting _inactive to false here so that a render function can
-  // rely on checking whether it's in an inactive tree (e.g. router-view)
-  vm._inactive = false;
-  activatedChildren.push(vm);
-}
-
-function callActivatedHooks (queue) {
-  for (var i = 0; i < queue.length; i++) {
-    queue[i]._inactive = true;
-    activateChildComponent(queue[i], true /* true */);
-  }
-}
-
-/**
- * Push a watcher into the watcher queue.
- * Jobs with duplicate IDs will be skipped unless it's
- * pushed when the queue is being flushed.
- */
-function queueWatcher (watcher) {
-  var id = watcher.id;
-  if (has[id] == null) {
-    has[id] = true;
-    if (!flushing) {
-      queue.push(watcher);
-    } else {
-      // if already flushing, splice the watcher based on its id
-      // if already past its id, it will be run next immediately.
-      var i = queue.length - 1;
-      while (i > index && queue[i].id > watcher.id) {
-        i--;
-      }
-      queue.splice(i + 1, 0, watcher);
-    }
-    // queue the flush
-    if (!waiting) {
-      waiting = true;
-
-      if (process.env.NODE_ENV !== 'production' && !config.async) {
-        flushSchedulerQueue();
-        return
-      }
-      nextTick(flushSchedulerQueue);
-    }
-  }
-}
-
-/*  */
-
-
-
-var uid$1 = 0;
-
-/**
- * A watcher parses an expression, collects dependencies,
- * and fires callback when the expression value changes.
- * This is used for both the $watch() api and directives.
- */
-var Watcher = function Watcher (
-  vm,
-  expOrFn,
-  cb,
-  options,
-  isRenderWatcher
-) {
-  this.vm = vm;
-  if (isRenderWatcher) {
-    vm._watcher = this;
-  }
-  vm._watchers.push(this);
-  // options
-  if (options) {
-    this.deep = !!options.deep;
-    this.user = !!options.user;
-    this.lazy = !!options.lazy;
-    this.sync = !!options.sync;
-    this.before = options.before;
-  } else {
-    this.deep = this.user = this.lazy = this.sync = false;
-  }
-  this.cb = cb;
-  this.id = ++uid$1; // 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 = process.env.NODE_ENV !== 'production'
-    ? expOrFn.toString()
-    : '';
-  // parse expression for getter
-  if (typeof expOrFn === 'function') {
-    this.getter = expOrFn;
-  } else {
-    this.getter = parsePath(expOrFn);
-    if (!this.getter) {
-      this.getter = noop;
-      process.env.NODE_ENV !== '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;
-  var vm = this.vm;
-  try {
-    value = this.getter.call(vm, vm);
-  } catch (e) {
-    if (this.user) {
-      handleError(e, vm, ("getter for watcher \"" + (this.expression) + "\""));
-    } else {
-      throw e
-    }
-  } finally {
-    // "touch" every property so they are all tracked as
-    // dependencies for deep watching
-    if (this.deep) {
-      traverse(value);
-    }
-    popTarget();
-    this.cleanupDeps();
-  }
-  return value
-};
-
-/**
- * Add a dependency to this directive.
- */
-Watcher.prototype.addDep = function addDep (dep) {
-  var id = dep.id;
-  if (!this.newDepIds.has(id)) {
-    this.newDepIds.add(id);
-    this.newDeps.push(dep);
-    if (!this.depIds.has(id)) {
-      dep.addSub(this);
-    }
-  }
-};
-
-/**
- * Clean up for dependency collection.
- */
-Watcher.prototype.cleanupDeps = function cleanupDeps () {
-  var i = this.deps.length;
-  while (i--) {
-    var dep = this.deps[i];
-    if (!this.newDepIds.has(dep.id)) {
-      dep.removeSub(this);
-    }
-  }
-  var tmp = this.depIds;
-  this.depIds = this.newDepIds;
-  this.newDepIds = tmp;
-  this.newDepIds.clear();
-  tmp = this.deps;
-  this.deps = this.newDeps;
-  this.newDeps = tmp;
-  this.newDeps.length = 0;
-};
-
-/**
- * Subscriber interface.
- * Will be called when a dependency changes.
- */
-Watcher.prototype.update = function update () {
-  /* istanbul ignore else */
-  if (this.lazy) {
-    this.dirty = true;
-  } else if (this.sync) {
-    this.run();
-  } else {
-    queueWatcher(this);
-  }
-};
-
-/**
- * Scheduler job interface.
- * Will be called by the scheduler.
- */
-Watcher.prototype.run = function run () {
-  if (this.active) {
-    var value = this.get();
-    if (
-      value !== this.value ||
-      // Deep watchers and watchers on Object/Arrays should fire even
-      // when the value is the same, because the value may
-      // have mutated.
-      isObject(value) ||
-      this.deep
-    ) {
-      // set new value
-      var oldValue = this.value;
-      this.value = value;
-      if (this.user) {
-        try {
-          this.cb.call(this.vm, value, oldValue);
-        } catch (e) {
-          handleError(e, this.vm, ("callback for watcher \"" + (this.expression) + "\""));
-        }
-      } else {
-        this.cb.call(this.vm, value, oldValue);
-      }
-    }
-  }
-};
-
-/**
- * Evaluate the value of the watcher.
- * This only gets called for lazy watchers.
- */
-Watcher.prototype.evaluate = function evaluate () {
-  this.value = this.get();
-  this.dirty = false;
-};
-
-/**
- * Depend on all deps collected by this watcher.
- */
-Watcher.prototype.depend = function depend () {
-  var i = this.deps.length;
-  while (i--) {
-    this.deps[i].depend();
-  }
-};
-
-/**
- * Remove self from all dependencies' subscriber list.
- */
-Watcher.prototype.teardown = function teardown () {
-  if (this.active) {
-    // remove self from vm's watcher list
-    // this is a somewhat expensive operation so we skip it
-    // if the vm is being destroyed.
-    if (!this.vm._isBeingDestroyed) {
-      remove(this.vm._watchers, this);
-    }
-    var i = this.deps.length;
-    while (i--) {
-      this.deps[i].removeSub(this);
-    }
-    this.active = false;
-  }
-};
-
-/*  */
-
-var sharedPropertyDefinition = {
-  enumerable: true,
-  configurable: true,
-  get: noop,
-  set: noop
-};
-
-function proxy (target, sourceKey, key) {
-  sharedPropertyDefinition.get = function proxyGetter () {
-    return this[sourceKey][key]
-  };
-  sharedPropertyDefinition.set = function proxySetter (val) {
-    this[sourceKey][key] = val;
-  };
-  Object.defineProperty(target, key, sharedPropertyDefinition);
-}
-
-function initState (vm) {
-  vm._watchers = [];
-  var opts = vm.$options;
-  if (opts.props) { initProps(vm, opts.props); }
-  if (opts.methods) { initMethods(vm, opts.methods); }
-  if (opts.data) {
-    initData(vm);
-  } else {
-    observe(vm._data = {}, true /* asRootData */);
-  }
-  if (opts.computed) { initComputed(vm, opts.computed); }
-  if (opts.watch && opts.watch !== nativeWatch) {
-    initWatch(vm, opts.watch);
-  }
-}
-
-function initProps (vm, propsOptions) {
-  var propsData = vm.$options.propsData || {};
-  var props = vm._props = {};
-  // cache prop keys so that future props updates can iterate using Array
-  // instead of dynamic object key enumeration.
-  var keys = vm.$options._propKeys = [];
-  var isRoot = !vm.$parent;
-  // root instance props should be converted
-  if (!isRoot) {
-    toggleObserving(false);
-  }
-  var loop = function ( key ) {
-    keys.push(key);
-    var value = validateProp(key, propsOptions, propsData, vm);
-    /* istanbul ignore else */
-    if (process.env.NODE_ENV !== 'production') {
-      var hyphenatedKey = hyphenate(key);
-      if (isReservedAttribute(hyphenatedKey) ||
-          config.isReservedAttr(hyphenatedKey)) {
-        warn(
-          ("\"" + hyphenatedKey + "\" is a reserved attribute and cannot be used as component prop."),
-          vm
-        );
-      }
-      defineReactive$$1(props, key, value, function () {
-        if (!isRoot && !isUpdatingChildComponent) {
-          warn(
-            "Avoid mutating a prop directly since the value will be " +
-            "overwritten whenever the parent component re-renders. " +
-            "Instead, use a data or computed property based on the prop's " +
-            "value. Prop being mutated: \"" + key + "\"",
-            vm
-          );
-        }
-      });
-    } else {
-      defineReactive$$1(props, key, value);
-    }
-    // static props are already proxied on the component's prototype
-    // during Vue.extend(). We only need to proxy props defined at
-    // instantiation here.
-    if (!(key in vm)) {
-      proxy(vm, "_props", key);
-    }
-  };
-
-  for (var key in propsOptions) loop( key );
-  toggleObserving(true);
-}
-
-function initData (vm) {
-  var data = vm.$options.data;
-  data = vm._data = typeof data === 'function'
-    ? getData(data, vm)
-    : data || {};
-  if (!isPlainObject(data)) {
-    data = {};
-    process.env.NODE_ENV !== 'production' && warn(
-      'data functions should return an object:\n' +
-      'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function',
-      vm
-    );
-  }
-  // proxy data on instance
-  var keys = Object.keys(data);
-  var props = vm.$options.props;
-  var methods = vm.$options.methods;
-  var i = keys.length;
-  while (i--) {
-    var key = keys[i];
-    if (process.env.NODE_ENV !== 'production') {
-      if (methods && hasOwn(methods, key)) {
-        warn(
-          ("Method \"" + key + "\" has already been defined as a data property."),
-          vm
-        );
-      }
-    }
-    if (props && hasOwn(props, key)) {
-      process.env.NODE_ENV !== 'production' && warn(
-        "The data property \"" + key + "\" is already declared as a prop. " +
-        "Use prop default value instead.",
-        vm
-      );
-    } else if (!isReserved(key)) {
-      proxy(vm, "_data", key);
-    }
-  }
-  // observe data
-  observe(data, true /* asRootData */);
-}
-
-function getData (data, vm) {
-  // #7573 disable dep collection when invoking data getters
-  pushTarget();
-  try {
-    return data.call(vm, vm)
-  } catch (e) {
-    handleError(e, vm, "data()");
-    return {}
-  } finally {
-    popTarget();
-  }
-}
-
-var computedWatcherOptions = { lazy: true };
-
-function initComputed (vm, computed) {
-  // $flow-disable-line
-  var watchers = vm._computedWatchers = Object.create(null);
-  // computed properties are just getters during SSR
-  var isSSR = isServerRendering();
-
-  for (var key in computed) {
-    var userDef = computed[key];
-    var getter = typeof userDef === 'function' ? userDef : userDef.get;
-    if (process.env.NODE_ENV !== 'production' && getter == null) {
-      warn(
-        ("Getter is missing for computed property \"" + key + "\"."),
-        vm
-      );
-    }
-
-    if (!isSSR) {
-      // create internal watcher for the computed property.
-      watchers[key] = new Watcher(
-        vm,
-        getter || noop,
-        noop,
-        computedWatcherOptions
-      );
-    }
-
-    // component-defined computed properties are already defined on the
-    // component prototype. We only need to define computed properties defined
-    // at instantiation here.
-    if (!(key in vm)) {
-      defineComputed(vm, key, userDef);
-    } else if (process.env.NODE_ENV !== 'production') {
-      if (key in vm.$data) {
-        warn(("The computed property \"" + key + "\" is already defined in data."), vm);
-      } else if (vm.$options.props && key in vm.$options.props) {
-        warn(("The computed property \"" + key + "\" is already defined as a prop."), vm);
-      }
-    }
-  }
-}
-
-function defineComputed (
-  target,
-  key,
-  userDef
-) {
-  var shouldCache = !isServerRendering();
-  if (typeof userDef === 'function') {
-    sharedPropertyDefinition.get = shouldCache
-      ? createComputedGetter(key)
-      : createGetterInvoker(userDef);
-    sharedPropertyDefinition.set = noop;
-  } else {
-    sharedPropertyDefinition.get = userDef.get
-      ? shouldCache && userDef.cache !== false
-        ? createComputedGetter(key)
-        : createGetterInvoker(userDef.get)
-      : noop;
-    sharedPropertyDefinition.set = userDef.set || noop;
-  }
-  if (process.env.NODE_ENV !== 'production' &&
-      sharedPropertyDefinition.set === noop) {
-    sharedPropertyDefinition.set = function () {
-      warn(
-        ("Computed property \"" + key + "\" was assigned to but it has no setter."),
-        this
-      );
-    };
-  }
-  Object.defineProperty(target, key, sharedPropertyDefinition);
-}
-
-function createComputedGetter (key) {
-  return function computedGetter () {
-    var watcher = this._computedWatchers && this._computedWatchers[key];
-    if (watcher) {
-      if (watcher.dirty) {
-        watcher.evaluate();
-      }
-      if (Dep.target) {
-        watcher.depend();
-      }
-      return watcher.value
-    }
-  }
-}
-
-function createGetterInvoker(fn) {
-  return function computedGetter () {
-    return fn.call(this, this)
-  }
-}
-
-function initMethods (vm, methods) {
-  var props = vm.$options.props;
-  for (var key in methods) {
-    if (process.env.NODE_ENV !== 'production') {
-      if (typeof methods[key] !== 'function') {
-        warn(
-          "Method \"" + key + "\" has type \"" + (typeof methods[key]) + "\" in the component definition. " +
-          "Did you reference the function correctly?",
-          vm
-        );
-      }
-      if (props && hasOwn(props, key)) {
-        warn(
-          ("Method \"" + key + "\" has already been defined as a prop."),
-          vm
-        );
-      }
-      if ((key in vm) && isReserved(key)) {
-        warn(
-          "Method \"" + key + "\" conflicts with an existing Vue instance method. " +
-          "Avoid defining component methods that start with _ or $."
-        );
-      }
-    }
-    vm[key] = typeof methods[key] !== 'function' ? noop : bind(methods[key], vm);
-  }
-}
-
-function initWatch (vm, watch) {
-  for (var key in watch) {
-    var handler = watch[key];
-    if (Array.isArray(handler)) {
-      for (var i = 0; i < handler.length; i++) {
-        createWatcher(vm, key, handler[i]);
-      }
-    } else {
-      createWatcher(vm, key, handler);
-    }
-  }
-}
-
-function createWatcher (
-  vm,
-  expOrFn,
-  handler,
-  options
-) {
-  if (isPlainObject(handler)) {
-    options = handler;
-    handler = handler.handler;
-  }
-  if (typeof handler === 'string') {
-    handler = vm[handler];
-  }
-  return vm.$watch(expOrFn, handler, options)
-}
-
-function stateMixin (Vue) {
-  // flow somehow has problems with directly declared definition object
-  // when using Object.defineProperty, so we have to procedurally build up
-  // the object here.
-  var dataDef = {};
-  dataDef.get = function () { return this._data };
-  var propsDef = {};
-  propsDef.get = function () { return this._props };
-  if (process.env.NODE_ENV !== 'production') {
-    dataDef.set = function () {
-      warn(
-        'Avoid replacing instance root $data. ' +
-        'Use nested data properties instead.',
-        this
-      );
-    };
-    propsDef.set = function () {
-      warn("$props is readonly.", this);
-    };
-  }
-  Object.defineProperty(Vue.prototype, '$data', dataDef);
-  Object.defineProperty(Vue.prototype, '$props', propsDef);
-
-  Vue.prototype.$set = set;
-  Vue.prototype.$delete = del;
-
-  Vue.prototype.$watch = function (
-    expOrFn,
-    cb,
-    options
-  ) {
-    var vm = this;
-    if (isPlainObject(cb)) {
-      return createWatcher(vm, expOrFn, cb, options)
-    }
-    options = options || {};
-    options.user = true;
-    var watcher = new Watcher(vm, expOrFn, cb, options);
-    if (options.immediate) {
-      try {
-        cb.call(vm, watcher.value);
-      } catch (error) {
-        handleError(error, vm, ("callback for immediate watcher \"" + (watcher.expression) + "\""));
-      }
-    }
-    return function unwatchFn () {
-      watcher.teardown();
-    }
-  };
-}
-
-/*  */
-
-function initProvide (vm) {
-  var provide = vm.$options.provide;
-  if (provide) {
-    vm._provided = typeof provide === 'function'
-      ? provide.call(vm)
-      : provide;
-  }
-}
-
-function initInjections (vm) {
-  var result = resolveInject(vm.$options.inject, vm);
-  if (result) {
-    toggleObserving(false);
-    Object.keys(result).forEach(function (key) {
-      /* istanbul ignore else */
-      if (process.env.NODE_ENV !== 'production') {
-        defineReactive$$1(vm, key, result[key], function () {
-          warn(
-            "Avoid mutating an injected value directly since the changes will be " +
-            "overwritten whenever the provided component re-renders. " +
-            "injection being mutated: \"" + key + "\"",
-            vm
-          );
-        });
-      } else {
-        defineReactive$$1(vm, key, result[key]);
-      }
-    });
-    toggleObserving(true);
-  }
-}
-
-function resolveInject (inject, vm) {
-  if (inject) {
-    // inject is :any because flow is not smart enough to figure out cached
-    var result = Object.create(null);
-    var keys = hasSymbol
-      ? Reflect.ownKeys(inject).filter(function (key) {
-        /* istanbul ignore next */
-        return Object.getOwnPropertyDescriptor(inject, key).enumerable
-      })
-      : Object.keys(inject);
-
-    for (var i = 0; i < keys.length; i++) {
-      var key = keys[i];
-      var provideKey = inject[key].from;
-      var source = vm;
-      while (source) {
-        if (source._provided && hasOwn(source._provided, provideKey)) {
-          result[key] = source._provided[provideKey];
-          break
-        }
-        source = source.$parent;
-      }
-      if (!source) {
-        if ('default' in inject[key]) {
-          var provideDefault = inject[key].default;
-          result[key] = typeof provideDefault === 'function'
-            ? provideDefault.call(vm)
-            : provideDefault;
-        } else if (process.env.NODE_ENV !== 'production') {
-          warn(("Injection \"" + key + "\" not found"), vm);
-        }
-      }
-    }
-    return result
-  }
-}
-
-/*  */
-
-/**
- * Runtime helper for rendering v-for lists.
- */
-function renderList (
-  val,
-  render
-) {
-  var ret, i, l, keys, key;
-  if (Array.isArray(val) || typeof val === 'string') {
-    ret = new Array(val.length);
-    for (i = 0, l = val.length; i < l; i++) {
-      ret[i] = render(val[i], i);
-    }
-  } else if (typeof val === 'number') {
-    ret = new Array(val);
-    for (i = 0; i < val; i++) {
-      ret[i] = render(i + 1, i);
-    }
-  } else if (isObject(val)) {
-    keys = Object.keys(val);
-    ret = new Array(keys.length);
-    for (i = 0, l = keys.length; i < l; i++) {
-      key = keys[i];
-      ret[i] = render(val[key], key, i);
-    }
-  }
-  if (!isDef(ret)) {
-    ret = [];
-  }
-  (ret)._isVList = true;
-  return ret
-}
-
-/*  */
-
-/**
- * Runtime helper for rendering <slot>
- */
-function renderSlot (
-  name,
-  fallback,
-  props,
-  bindObject
-) {
-  var scopedSlotFn = this.$scopedSlots[name];
-  var nodes;
-  if (scopedSlotFn) { // scoped slot
-    props = props || {};
-    if (bindObject) {
-      if (process.env.NODE_ENV !== 'production' && !isObject(bindObject)) {
-        warn(
-          'slot v-bind without argument expects an Object',
-          this
-        );
-      }
-      props = extend(extend({}, bindObject), props);
-    }
-    nodes = scopedSlotFn(props) || fallback;
-  } else {
-    nodes = this.$slots[name] || fallback;
-  }
-
-  var target = props && props.slot;
-  if (target) {
-    return this.$createElement('template', { slot: target }, nodes)
-  } else {
-    return nodes
-  }
-}
-
-/*  */
-
-/**
- * Runtime helper for resolving filters
- */
-function resolveFilter (id) {
-  return resolveAsset(this.$options, 'filters', id, true) || identity
-}
-
-/*  */
-
-function isKeyNotMatch (expect, actual) {
-  if (Array.isArray(expect)) {
-    return expect.indexOf(actual) === -1
-  } else {
-    return expect !== actual
-  }
-}
-
-/**
- * Runtime helper for checking keyCodes from config.
- * exposed as Vue.prototype._k
- * passing in eventKeyName as last argument separately for backwards compat
- */
-function checkKeyCodes (
-  eventKeyCode,
-  key,
-  builtInKeyCode,
-  eventKeyName,
-  builtInKeyName
-) {
-  var mappedKeyCode = config.keyCodes[key] || builtInKeyCode;
-  if (builtInKeyName && eventKeyName && !config.keyCodes[key]) {
-    return isKeyNotMatch(builtInKeyName, eventKeyName)
-  } else if (mappedKeyCode) {
-    return isKeyNotMatch(mappedKeyCode, eventKeyCode)
-  } else if (eventKeyName) {
-    return hyphenate(eventKeyName) !== key
-  }
-}
-
-/*  */
-
-/**
- * Runtime helper for merging v-bind="object" into a VNode's data.
- */
-function bindObjectProps (
-  data,
-  tag,
-  value,
-  asProp,
-  isSync
-) {
-  if (value) {
-    if (!isObject(value)) {
-      process.env.NODE_ENV !== 'production' && warn(
-        'v-bind without argument expects an Object or Array value',
-        this
-      );
-    } else {
-      if (Array.isArray(value)) {
-        value = toObject(value);
-      }
-      var hash;
-      var loop = function ( key ) {
-        if (
-          key === 'class' ||
-          key === 'style' ||
-          isReservedAttribute(key)
-        ) {
-          hash = data;
-        } else {
-          var type = data.attrs && data.attrs.type;
-          hash = asProp || config.mustUseProp(tag, type, key)
-            ? data.domProps || (data.domProps = {})
-            : data.attrs || (data.attrs = {});
-        }
-        var camelizedKey = camelize(key);
-        if (!(key in hash) && !(camelizedKey in hash)) {
-          hash[key] = value[key];
-
-          if (isSync) {
-            var on = data.on || (data.on = {});
-            on[("update:" + camelizedKey)] = function ($event) {
-              value[key] = $event;
-            };
-          }
-        }
-      };
-
-      for (var key in value) loop( key );
-    }
-  }
-  return data
-}
-
-/*  */
-
-/**
- * Runtime helper for rendering static trees.
- */
-function renderStatic (
-  index,
-  isInFor
-) {
-  var cached = this._staticTrees || (this._staticTrees = []);
-  var tree = cached[index];
-  // if has already-rendered static tree and not inside v-for,
-  // we can reuse the same tree.
-  if (tree && !isInFor) {
-    return tree
-  }
-  // otherwise, render a fresh tree.
-  tree = cached[index] = this.$options.staticRenderFns[index].call(
-    this._renderProxy,
-    null,
-    this // for render fns generated for functional component templates
-  );
-  markStatic(tree, ("__static__" + index), false);
-  return tree
-}
-
-/**
- * Runtime helper for v-once.
- * Effectively it means marking the node as static with a unique key.
- */
-function markOnce (
-  tree,
-  index,
-  key
-) {
-  markStatic(tree, ("__once__" + index + (key ? ("_" + key) : "")), true);
-  return tree
-}
-
-function markStatic (
-  tree,
-  key,
-  isOnce
-) {
-  if (Array.isArray(tree)) {
-    for (var i = 0; i < tree.length; i++) {
-      if (tree[i] && typeof tree[i] !== 'string') {
-        markStaticNode(tree[i], (key + "_" + i), isOnce);
-      }
-    }
-  } else {
-    markStaticNode(tree, key, isOnce);
-  }
-}
-
-function markStaticNode (node, key, isOnce) {
-  node.isStatic = true;
-  node.key = key;
-  node.isOnce = isOnce;
-}
-
-/*  */
-
-function bindObjectListeners (data, value) {
-  if (value) {
-    if (!isPlainObject(value)) {
-      process.env.NODE_ENV !== 'production' && warn(
-        'v-on without argument expects an Object value',
-        this
-      );
-    } else {
-      var on = data.on = data.on ? extend({}, data.on) : {};
-      for (var key in value) {
-        var existing = on[key];
-        var ours = value[key];
-        on[key] = existing ? [].concat(existing, ours) : ours;
-      }
-    }
-  }
-  return data
-}
-
-/*  */
-
-function installRenderHelpers (target) {
-  target._o = markOnce;
-  target._n = toNumber;
-  target._s = toString;
-  target._l = renderList;
-  target._t = renderSlot;
-  target._q = looseEqual;
-  target._i = looseIndexOf;
-  target._m = renderStatic;
-  target._f = resolveFilter;
-  target._k = checkKeyCodes;
-  target._b = bindObjectProps;
-  target._v = createTextVNode;
-  target._e = createEmptyVNode;
-  target._u = resolveScopedSlots;
-  target._g = bindObjectListeners;
-}
-
-/*  */
-
-function FunctionalRenderContext (
-  data,
-  props,
-  children,
-  parent,
-  Ctor
-) {
-  var options = Ctor.options;
-  // ensure the createElement function in functional components
-  // gets a unique context - this is necessary for correct named slot check
-  var contextVm;
-  if (hasOwn(parent, '_uid')) {
-    contextVm = Object.create(parent);
-    // $flow-disable-line
-    contextVm._original = parent;
-  } else {
-    // the context vm passed in is a functional context as well.
-    // in this case we want to make sure we are able to get a hold to the
-    // real context instance.
-    contextVm = parent;
-    // $flow-disable-line
-    parent = parent._original;
-  }
-  var isCompiled = isTrue(options._compiled);
-  var needNormalization = !isCompiled;
-
-  this.data = data;
-  this.props = props;
-  this.children = children;
-  this.parent = parent;
-  this.listeners = data.on || emptyObject;
-  this.injections = resolveInject(options.inject, parent);
-  this.slots = function () { return resolveSlots(children, parent); };
-
-  // support for compiled functional template
-  if (isCompiled) {
-    // exposing $options for renderStatic()
-    this.$options = options;
-    // pre-resolve slots for renderSlot()
-    this.$slots = this.slots();
-    this.$scopedSlots = data.scopedSlots || emptyObject;
-  }
-
-  if (options._scopeId) {
-    this._c = function (a, b, c, d) {
-      var vnode = createElement(contextVm, a, b, c, d, needNormalization);
-      if (vnode && !Array.isArray(vnode)) {
-        vnode.fnScopeId = options._scopeId;
-        vnode.fnContext = parent;
-      }
-      return vnode
-    };
-  } else {
-    this._c = function (a, b, c, d) { return createElement(contextVm, a, b, c, d, needNormalization); };
-  }
-}
-
-installRenderHelpers(FunctionalRenderContext.prototype);
-
-function createFunctionalComponent (
-  Ctor,
-  propsData,
-  data,
-  contextVm,
-  children
-) {
-  var options = Ctor.options;
-  var props = {};
-  var propOptions = options.props;
-  if (isDef(propOptions)) {
-    for (var key in propOptions) {
-      props[key] = validateProp(key, propOptions, propsData || emptyObject);
-    }
-  } else {
-    if (isDef(data.attrs)) { mergeProps(props, data.attrs); }
-    if (isDef(data.props)) { mergeProps(props, data.props); }
-  }
-
-  var renderContext = new FunctionalRenderContext(
-    data,
-    props,
-    children,
-    contextVm,
-    Ctor
-  );
-
-  var vnode = options.render.call(null, renderContext._c, renderContext);
-
-  if (vnode instanceof VNode) {
-    return cloneAndMarkFunctionalResult(vnode, data, renderContext.parent, options, renderContext)
-  } else if (Array.isArray(vnode)) {
-    var vnodes = normalizeChildren(vnode) || [];
-    var res = new Array(vnodes.length);
-    for (var i = 0; i < vnodes.length; i++) {
-      res[i] = cloneAndMarkFunctionalResult(vnodes[i], data, renderContext.parent, options, renderContext);
-    }
-    return res
-  }
-}
-
-function cloneAndMarkFunctionalResult (vnode, data, contextVm, options, renderContext) {
-  // #7817 clone node before setting fnContext, otherwise if the node is reused
-  // (e.g. it was from a cached normal slot) the fnContext causes named slots
-  // that should not be matched to match.
-  var clone = cloneVNode(vnode);
-  clone.fnContext = contextVm;
-  clone.fnOptions = options;
-  if (process.env.NODE_ENV !== 'production') {
-    (clone.devtoolsMeta = clone.devtoolsMeta || {}).renderContext = renderContext;
-  }
-  if (data.slot) {
-    (clone.data || (clone.data = {})).slot = data.slot;
-  }
-  return clone
-}
-
-function mergeProps (to, from) {
-  for (var key in from) {
-    to[camelize(key)] = from[key];
-  }
-}
-
-/*  */
-
-/*  */
-
-/*  */
-
-/*  */
-
-// inline hooks to be invoked on component VNodes during patch
-var componentVNodeHooks = {
-  init: function init (vnode, hydrating) {
-    if (
-      vnode.componentInstance &&
-      !vnode.componentInstance._isDestroyed &&
-      vnode.data.keepAlive
-    ) {
-      // kept-alive components, treat as a patch
-      var mountedNode = vnode; // work around flow
-      componentVNodeHooks.prepatch(mountedNode, mountedNode);
-    } else {
-      var child = vnode.componentInstance = createComponentInstanceForVnode(
-        vnode,
-        activeInstance
-      );
-      child.$mount(hydrating ? vnode.elm : undefined, hydrating);
-    }
-  },
-
-  prepatch: function prepatch (oldVnode, vnode) {
-    var options = vnode.componentOptions;
-    var child = vnode.componentInstance = oldVnode.componentInstance;
-    updateChildComponent(
-      child,
-      options.propsData, // updated props
-      options.listeners, // updated listeners
-      vnode, // new parent vnode
-      options.children // new children
-    );
-  },
-
-  insert: function insert (vnode) {
-    var context = vnode.context;
-    var componentInstance = vnode.componentInstance;
-    if (!componentInstance._isMounted) {
-      componentInstance._isMounted = true;
-      callHook(componentInstance, 'mounted');
-    }
-    if (vnode.data.keepAlive) {
-      if (context._isMounted) {
-        // vue-router#1212
-        // During updates, a kept-alive component's child components may
-        // change, so directly walking the tree here may call activated hooks
-        // on incorrect children. Instead we push them into a queue which will
-        // be processed after the whole patch process ended.
-        queueActivatedComponent(componentInstance);
-      } else {
-        activateChildComponent(componentInstance, true /* direct */);
-      }
-    }
-  },
-
-  destroy: function destroy (vnode) {
-    var componentInstance = vnode.componentInstance;
-    if (!componentInstance._isDestroyed) {
-      if (!vnode.data.keepAlive) {
-        componentInstance.$destroy();
-      } else {
-        deactivateChildComponent(componentInstance, true /* direct */);
-      }
-    }
-  }
-};
-
-var hooksToMerge = Object.keys(componentVNodeHooks);
-
-function createComponent (
-  Ctor,
-  data,
-  context,
-  children,
-  tag
-) {
-  if (isUndef(Ctor)) {
-    return
-  }
-
-  var baseCtor = context.$options._base;
-
-  // plain options object: turn it into a constructor
-  if (isObject(Ctor)) {
-    Ctor = baseCtor.extend(Ctor);
-  }
-
-  // if at this stage it's not a constructor or an async component factory,
-  // reject.
-  if (typeof Ctor !== 'function') {
-    if (process.env.NODE_ENV !== 'production') {
-      warn(("Invalid Component definition: " + (String(Ctor))), context);
-    }
-    return
-  }
-
-  // async component
-  var asyncFactory;
-  if (isUndef(Ctor.cid)) {
-    asyncFactory = Ctor;
-    Ctor = resolveAsyncComponent(asyncFactory, baseCtor, context);
-    if (Ctor === undefined) {
-      // return a placeholder node for async component, which is rendered
-      // as a comment node but preserves all the raw information for the node.
-      // the information will be used for async server-rendering and hydration.
-      return createAsyncPlaceholder(
-        asyncFactory,
-        data,
-        context,
-        children,
-        tag
-      )
-    }
-  }
-
-  data = data || {};
-
-  // resolve constructor options in case global mixins are applied after
-  // component constructor creation
-  resolveConstructorOptions(Ctor);
-
-  // transform component v-model data into props & events
-  if (isDef(data.model)) {
-    transformModel(Ctor.options, data);
-  }
-
-  // extract props
-  var propsData = extractPropsFromVNodeData(data, Ctor, tag);
-
-  // functional component
-  if (isTrue(Ctor.options.functional)) {
-    return createFunctionalComponent(Ctor, propsData, data, context, children)
-  }
-
-  // extract listeners, since these needs to be treated as
-  // child component listeners instead of DOM listeners
-  var listeners = data.on;
-  // replace with listeners with .native modifier
-  // so it gets processed during parent component patch.
-  data.on = data.nativeOn;
-
-  if (isTrue(Ctor.options.abstract)) {
-    // abstract components do not keep anything
-    // other than props & listeners & slot
-
-    // work around flow
-    var slot = data.slot;
-    data = {};
-    if (slot) {
-      data.slot = slot;
-    }
-  }
-
-  // install component management hooks onto the placeholder node
-  installComponentHooks(data);
-
-  // return a placeholder vnode
-  var name = Ctor.options.name || tag;
-  var vnode = new VNode(
-    ("vue-component-" + (Ctor.cid) + (name ? ("-" + name) : '')),
-    data, undefined, undefined, undefined, context,
-    { Ctor: Ctor, propsData: propsData, listeners: listeners, tag: tag, children: children },
-    asyncFactory
-  );
-
-  return vnode
-}
-
-function createComponentInstanceForVnode (
-  vnode, // we know it's MountedComponentVNode but flow doesn't
-  parent // activeInstance in lifecycle state
-) {
-  var options = {
-    _isComponent: true,
-    _parentVnode: vnode,
-    parent: parent
-  };
-  // check inline-template render functions
-  var inlineTemplate = vnode.data.inlineTemplate;
-  if (isDef(inlineTemplate)) {
-    options.render = inlineTemplate.render;
-    options.staticRenderFns = inlineTemplate.staticRenderFns;
-  }
-  return new vnode.componentOptions.Ctor(options)
-}
-
-function installComponentHooks (data) {
-  var hooks = data.hook || (data.hook = {});
-  for (var i = 0; i < hooksToMerge.length; i++) {
-    var key = hooksToMerge[i];
-    var existing = hooks[key];
-    var toMerge = componentVNodeHooks[key];
-    if (existing !== toMerge && !(existing && existing._merged)) {
-      hooks[key] = existing ? mergeHook$1(toMerge, existing) : toMerge;
-    }
-  }
-}
-
-function mergeHook$1 (f1, f2) {
-  var merged = function (a, b) {
-    // flow complains about extra args which is why we use any
-    f1(a, b);
-    f2(a, b);
-  };
-  merged._merged = true;
-  return merged
-}
-
-// transform component v-model info (value and callback) into
-// prop and event handler respectively.
-function transformModel (options, data) {
-  var prop = (options.model && options.model.prop) || 'value';
-  var event = (options.model && options.model.event) || 'input'
-  ;(data.props || (data.props = {}))[prop] = data.model.value;
-  var on = data.on || (data.on = {});
-  var existing = on[event];
-  var callback = data.model.callback;
-  if (isDef(existing)) {
-    if (
-      Array.isArray(existing)
-        ? existing.indexOf(callback) === -1
-        : existing !== callback
-    ) {
-      on[event] = [callback].concat(existing);
-    }
-  } else {
-    on[event] = callback;
-  }
-}
-
-/*  */
-
-var SIMPLE_NORMALIZE = 1;
-var ALWAYS_NORMALIZE = 2;
-
-// wrapper function for providing a more flexible interface
-// without getting yelled at by flow
-function createElement (
-  context,
-  tag,
-  data,
-  children,
-  normalizationType,
-  alwaysNormalize
-) {
-  if (Array.isArray(data) || isPrimitive(data)) {
-    normalizationType = children;
-    children = data;
-    data = undefined;
-  }
-  if (isTrue(alwaysNormalize)) {
-    normalizationType = ALWAYS_NORMALIZE;
-  }
-  return _createElement(context, tag, data, children, normalizationType)
-}
-
-function _createElement (
-  context,
-  tag,
-  data,
-  children,
-  normalizationType
-) {
-  if (isDef(data) && isDef((data).__ob__)) {
-    process.env.NODE_ENV !== '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()
-  }
-  // object syntax in v-bind
-  if (isDef(data) && isDef(data.is)) {
-    tag = data.is;
-  }
-  if (!tag) {
-    // in case of component :is set to falsy value
-    return createEmptyVNode()
-  }
-  // warn against non-primitive key
-  if (process.env.NODE_ENV !== 'production' &&
-    isDef(data) && isDef(data.key) && !isPrimitive(data.key)
-  ) {
-    {
-      warn(
-        'Avoid using non-primitive value as key, ' +
-        'use string/number value instead.',
-        context
-      );
-    }
-  }
-  // support single function children as default scoped slot
-  if (Array.isArray(children) &&
-    typeof children[0] === 'function'
-  ) {
-    data = data || {};
-    data.scopedSlots = { default: children[0] };
-    children.length = 0;
-  }
-  if (normalizationType === ALWAYS_NORMALIZE) {
-    children = normalizeChildren(children);
-  } else if (normalizationType === SIMPLE_NORMALIZE) {
-    children = simpleNormalizeChildren(children);
-  }
-  var vnode, ns;
-  if (typeof tag === 'string') {
-    var Ctor;
-    ns = (context.$vnode && context.$vnode.ns) || config.getTagNamespace(tag);
-    if (config.isReservedTag(tag)) {
-      // platform built-in elements
-      vnode = new VNode(
-        config.parsePlatformTagName(tag), data, children,
-        undefined, undefined, context
-      );
-    } else if ((!data || !data.pre) && isDef(Ctor = resolveAsset(context.$options, 'components', tag))) {
-      // component
-      vnode = createComponent(Ctor, data, context, children, tag);
-    } else {
-      // unknown or unlisted namespaced elements
-      // check at runtime because it may get assigned a namespace when its
-      // parent normalizes children
-      vnode = new VNode(
-        tag, data, children,
-        undefined, undefined, context
-      );
-    }
-  } else {
-    // direct component options / constructor
-    vnode = createComponent(tag, data, context, children);
-  }
-  if (Array.isArray(vnode)) {
-    return vnode
-  } else if (isDef(vnode)) {
-    if (isDef(ns)) { applyNS(vnode, ns); }
-    if (isDef(data)) { registerDeepBindings(data); }
-    return vnode
-  } else {
-    return createEmptyVNode()
-  }
-}
-
-function applyNS (vnode, ns, force) {
-  vnode.ns = ns;
-  if (vnode.tag === 'foreignObject') {
-    // use default namespace inside foreignObject
-    ns = undefined;
-    force = true;
-  }
-  if (isDef(vnode.children)) {
-    for (var i = 0, l = vnode.children.length; i < l; i++) {
-      var child = vnode.children[i];
-      if (isDef(child.tag) && (
-        isUndef(child.ns) || (isTrue(force) && child.tag !== 'svg'))) {
-        applyNS(child, ns, force);
-      }
-    }
-  }
-}
-
-// ref #5318
-// necessary to ensure parent re-render when deep bindings like :style and
-// :class are used on slot nodes
-function registerDeepBindings (data) {
-  if (isObject(data.style)) {
-    traverse(data.style);
-  }
-  if (isObject(data.class)) {
-    traverse(data.class);
-  }
-}
-
-/*  */
-
-function initRender (vm) {
-  vm._vnode = null; // the root of the child tree
-  vm._staticTrees = null; // v-once cached trees
-  var options = vm.$options;
-  var parentVnode = vm.$vnode = options._parentVnode; // the placeholder node in parent tree
-  var renderContext = parentVnode && parentVnode.context;
-  vm.$slots = resolveSlots(options._renderChildren, renderContext);
-  vm.$scopedSlots = emptyObject;
-  // bind the createElement fn to this instance
-  // so that we get proper render context inside it.
-  // args order: tag, data, children, normalizationType, alwaysNormalize
-  // internal version is used by render functions compiled from templates
-  vm._c = function (a, b, c, d) { return createElement(vm, a, b, c, d, false); };
-  // normalization is always applied for the public version, used in
-  // user-written render functions.
-  vm.$createElement = function (a, b, c, d) { return createElement(vm, a, b, c, d, true); };
-
-  // $attrs & $listeners are exposed for easier HOC creation.
-  // they need to be reactive so that HOCs using them are always updated
-  var parentData = parentVnode && parentVnode.data;
-
-  /* istanbul ignore else */
-  if (process.env.NODE_ENV !== 'production') {
-    defineReactive$$1(vm, '$attrs', parentData && parentData.attrs || emptyObject, function () {
-      !isUpdatingChildComponent && warn("$attrs is readonly.", vm);
-    }, true);
-    defineReactive$$1(vm, '$listeners', options._parentListeners || emptyObject, function () {
-      !isUpdatingChildComponent && warn("$listeners is readonly.", vm);
-    }, true);
-  } else {
-    defineReactive$$1(vm, '$attrs', parentData && parentData.attrs || emptyObject, null, true);
-    defineReactive$$1(vm, '$listeners', options._parentListeners || emptyObject, null, true);
-  }
-}
-
-function renderMixin (Vue) {
-  // install runtime convenience helpers
-  installRenderHelpers(Vue.prototype);
-
-  Vue.prototype.$nextTick = function (fn) {
-    return nextTick(fn, this)
-  };
-
-  Vue.prototype._render = function () {
-    var vm = this;
-    var ref = vm.$options;
-    var render = ref.render;
-    var _parentVnode = ref._parentVnode;
-
-    if (_parentVnode) {
-      vm.$scopedSlots = _parentVnode.data.scopedSlots || emptyObject;
-    }
-
-    // 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) {
-      handleError(e, vm, "render");
-      // return error render result,
-      // or previous vnode to prevent render error causing blank component
-      /* istanbul ignore else */
-      if (process.env.NODE_ENV !== 'production' && vm.$options.renderError) {
-        try {
-          vnode = vm.$options.renderError.call(vm._renderProxy, vm.$createElement, e);
-        } catch (e) {
-          handleError(e, vm, "renderError");
-          vnode = vm._vnode;
-        }
-      } else {
-        vnode = vm._vnode;
-      }
-    }
-    // return empty vnode in case the render function errored out
-    if (!(vnode instanceof VNode)) {
-      if (process.env.NODE_ENV !== '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
-  };
-}
-
-/*  */
-
-var uid$3 = 0;
-
-function initMixin (Vue) {
-  Vue.prototype._init = function (options) {
-    var vm = this;
-    // a uid
-    vm._uid = uid$3++;
-
-    var startTag, endTag;
-    /* istanbul ignore if */
-    if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
-      startTag = "vue-perf-start:" + (vm._uid);
-      endTag = "vue-perf-end:" + (vm._uid);
-      mark(startTag);
-    }
-
-    // a flag to avoid this being observed
-    vm._isVue = true;
-    // merge options
-    if (options && options._isComponent) {
-      // optimize internal component instantiation
-      // since dynamic options merging is pretty slow, and none of the
-      // internal component options needs special treatment.
-      initInternalComponent(vm, options);
-    } else {
-      vm.$options = mergeOptions(
-        resolveConstructorOptions(vm.constructor),
-        options || {},
-        vm
-      );
-    }
-    /* istanbul ignore else */
-    if (process.env.NODE_ENV !== 'production') {
-      initProxy(vm);
-    } else {
-      vm._renderProxy = vm;
-    }
-    // expose real self
-    vm._self = vm;
-    initLifecycle(vm);
-    initEvents(vm);
-    initRender(vm);
-    callHook(vm, 'beforeCreate');
-    initInjections(vm); // resolve injections before data/props
-    initState(vm);
-    initProvide(vm); // resolve provide after data/props
-    callHook(vm, 'created');
-
-    /* istanbul ignore if */
-    if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
-      vm._name = formatComponentName(vm, false);
-      mark(endTag);
-      measure(("vue " + (vm._name) + " init"), startTag, endTag);
-    }
-
-    if (vm.$options.el) {
-      vm.$mount(vm.$options.el);
-    }
-  };
-}
-
-function initInternalComponent (vm, options) {
-  var opts = vm.$options = Object.create(vm.constructor.options);
-  // doing this because it's faster than dynamic enumeration.
-  var parentVnode = options._parentVnode;
-  opts.parent = options.parent;
-  opts._parentVnode = parentVnode;
-
-  var vnodeComponentOptions = parentVnode.componentOptions;
-  opts.propsData = vnodeComponentOptions.propsData;
-  opts._parentListeners = vnodeComponentOptions.listeners;
-  opts._renderChildren = vnodeComponentOptions.children;
-  opts._componentTag = vnodeComponentOptions.tag;
-
-  if (options.render) {
-    opts.render = options.render;
-    opts.staticRenderFns = options.staticRenderFns;
-  }
-}
-
-function resolveConstructorOptions (Ctor) {
-  var options = Ctor.options;
-  if (Ctor.super) {
-    var superOptions = resolveConstructorOptions(Ctor.super);
-    var cachedSuperOptions = Ctor.superOptions;
-    if (superOptions !== cachedSuperOptions) {
-      // super option changed,
-      // need to resolve new options.
-      Ctor.superOptions = superOptions;
-      // check if there are any late-modified/attached options (#4976)
-      var modifiedOptions = resolveModifiedOptions(Ctor);
-      // update base extend options
-      if (modifiedOptions) {
-        extend(Ctor.extendOptions, modifiedOptions);
-      }
-      options = Ctor.options = mergeOptions(superOptions, Ctor.extendOptions);
-      if (options.name) {
-        options.components[options.name] = Ctor;
-      }
-    }
-  }
-  return options
-}
-
-function resolveModifiedOptions (Ctor) {
-  var modified;
-  var latest = Ctor.options;
-  var sealed = Ctor.sealedOptions;
-  for (var key in latest) {
-    if (latest[key] !== sealed[key]) {
-      if (!modified) { modified = {}; }
-      modified[key] = latest[key];
-    }
-  }
-  return modified
-}
-
-function Vue (options) {
-  if (process.env.NODE_ENV !== 'production' &&
-    !(this instanceof Vue)
-  ) {
-    warn('Vue is a constructor and should be called with the `new` keyword');
-  }
-  this._init(options);
-}
-
-initMixin(Vue);
-stateMixin(Vue);
-eventsMixin(Vue);
-lifecycleMixin(Vue);
-renderMixin(Vue);
-
-/*  */
-
-function initUse (Vue) {
-  Vue.use = function (plugin) {
-    var installedPlugins = (this._installedPlugins || (this._installedPlugins = []));
-    if (installedPlugins.indexOf(plugin) > -1) {
-      return this
-    }
-
-    // additional parameters
-    var args = toArray(arguments, 1);
-    args.unshift(this);
-    if (typeof plugin.install === 'function') {
-      plugin.install.apply(plugin, args);
-    } else if (typeof plugin === 'function') {
-      plugin.apply(null, args);
-    }
-    installedPlugins.push(plugin);
-    return this
-  };
-}
-
-/*  */
-
-function initMixin$1 (Vue) {
-  Vue.mixin = function (mixin) {
-    this.options = mergeOptions(this.options, mixin);
-    return this
-  };
-}
-
-/*  */
-
-function initExtend (Vue) {
-  /**
-   * Each instance constructor, including Vue, has a unique
-   * cid. This enables us to create wrapped "child
-   * constructors" for prototypal inheritance and cache them.
-   */
-  Vue.cid = 0;
-  var cid = 1;
-
-  /**
-   * Class inheritance
-   */
-  Vue.extend = function (extendOptions) {
-    extendOptions = extendOptions || {};
-    var Super = this;
-    var SuperId = Super.cid;
-    var cachedCtors = extendOptions._Ctor || (extendOptions._Ctor = {});
-    if (cachedCtors[SuperId]) {
-      return cachedCtors[SuperId]
-    }
-
-    var name = extendOptions.name || Super.options.name;
-    if (process.env.NODE_ENV !== 'production' && name) {
-      validateComponentName(name);
-    }
-
-    var Sub = function VueComponent (options) {
-      this._init(options);
-    };
-    Sub.prototype = Object.create(Super.prototype);
-    Sub.prototype.constructor = Sub;
-    Sub.cid = cid++;
-    Sub.options = mergeOptions(
-      Super.options,
-      extendOptions
-    );
-    Sub['super'] = Super;
-
-    // For props and computed properties, we define the proxy getters on
-    // the Vue instances at extension time, on the extended prototype. This
-    // avoids Object.defineProperty calls for each instance created.
-    if (Sub.options.props) {
-      initProps$1(Sub);
-    }
-    if (Sub.options.computed) {
-      initComputed$1(Sub);
-    }
-
-    // allow further extension/mixin/plugin usage
-    Sub.extend = Super.extend;
-    Sub.mixin = Super.mixin;
-    Sub.use = Super.use;
-
-    // create asset registers, so extended classes
-    // can have their private assets too.
-    ASSET_TYPES.forEach(function (type) {
-      Sub[type] = Super[type];
-    });
-    // enable recursive self-lookup
-    if (name) {
-      Sub.options.components[name] = Sub;
-    }
-
-    // keep a reference to the super options at extension time.
-    // later at instantiation we can check if Super's options have
-    // been updated.
-    Sub.superOptions = Super.options;
-    Sub.extendOptions = extendOptions;
-    Sub.sealedOptions = extend({}, Sub.options);
-
-    // cache constructor
-    cachedCtors[SuperId] = Sub;
-    return Sub
-  };
-}
-
-function initProps$1 (Comp) {
-  var props = Comp.options.props;
-  for (var key in props) {
-    proxy(Comp.prototype, "_props", key);
-  }
-}
-
-function initComputed$1 (Comp) {
-  var computed = Comp.options.computed;
-  for (var key in computed) {
-    defineComputed(Comp.prototype, key, computed[key]);
-  }
-}
-
-/*  */
-
-function initAssetRegisters (Vue) {
-  /**
-   * Create asset registration methods.
-   */
-  ASSET_TYPES.forEach(function (type) {
-    Vue[type] = function (
-      id,
-      definition
-    ) {
-      if (!definition) {
-        return this.options[type + 's'][id]
-      } else {
-        /* istanbul ignore if */
-        if (process.env.NODE_ENV !== 'production' && type === 'component') {
-          validateComponentName(id);
-        }
-        if (type === 'component' && isPlainObject(definition)) {
-          definition.name = definition.name || id;
-          definition = this.options._base.extend(definition);
-        }
-        if (type === 'directive' && typeof definition === 'function') {
-          definition = { bind: definition, update: definition };
-        }
-        this.options[type + 's'][id] = definition;
-        return definition
-      }
-    };
-  });
-}
-
-/*  */
-
-
-
-function getComponentName (opts) {
-  return opts && (opts.Ctor.options.name || opts.tag)
-}
-
-function matches (pattern, name) {
-  if (Array.isArray(pattern)) {
-    return pattern.indexOf(name) > -1
-  } else if (typeof pattern === 'string') {
-    return pattern.split(',').indexOf(name) > -1
-  } else if (isRegExp(pattern)) {
-    return pattern.test(name)
-  }
-  /* istanbul ignore next */
-  return false
-}
-
-function pruneCache (keepAliveInstance, filter) {
-  var cache = keepAliveInstance.cache;
-  var keys = keepAliveInstance.keys;
-  var _vnode = keepAliveInstance._vnode;
-  for (var key in cache) {
-    var cachedNode = cache[key];
-    if (cachedNode) {
-      var name = getComponentName(cachedNode.componentOptions);
-      if (name && !filter(name)) {
-        pruneCacheEntry(cache, key, keys, _vnode);
-      }
-    }
-  }
-}
-
-function pruneCacheEntry (
-  cache,
-  key,
-  keys,
-  current
-) {
-  var cached$$1 = cache[key];
-  if (cached$$1 && (!current || cached$$1.tag !== current.tag)) {
-    cached$$1.componentInstance.$destroy();
-  }
-  cache[key] = null;
-  remove(keys, key);
-}
-
-var patternTypes = [String, RegExp, Array];
-
-var KeepAlive = {
-  name: 'keep-alive',
-  abstract: true,
-
-  props: {
-    include: patternTypes,
-    exclude: patternTypes,
-    max: [String, Number]
-  },
-
-  created: function created () {
-    this.cache = Object.create(null);
-    this.keys = [];
-  },
-
-  destroyed: function destroyed () {
-    for (var key in this.cache) {
-      pruneCacheEntry(this.cache, key, this.keys);
-    }
-  },
-
-  mounted: function mounted () {
-    var this$1 = this;
-
-    this.$watch('include', function (val) {
-      pruneCache(this$1, function (name) { return matches(val, name); });
-    });
-    this.$watch('exclude', function (val) {
-      pruneCache(this$1, function (name) { return !matches(val, name); });
-    });
-  },
-
-  render: function render () {
-    var slot = this.$slots.default;
-    var vnode = getFirstComponentChild(slot);
-    var componentOptions = vnode && vnode.componentOptions;
-    if (componentOptions) {
-      // check pattern
-      var name = getComponentName(componentOptions);
-      var ref = this;
-      var include = ref.include;
-      var exclude = ref.exclude;
-      if (
-        // not included
-        (include && (!name || !matches(include, name))) ||
-        // excluded
-        (exclude && name && matches(exclude, name))
-      ) {
-        return vnode
-      }
-
-      var ref$1 = this;
-      var cache = ref$1.cache;
-      var keys = ref$1.keys;
-      var key = vnode.key == null
-        // same constructor may get registered as different local components
-        // so cid alone is not enough (#3269)
-        ? componentOptions.Ctor.cid + (componentOptions.tag ? ("::" + (componentOptions.tag)) : '')
-        : vnode.key;
-      if (cache[key]) {
-        vnode.componentInstance = cache[key].componentInstance;
-        // make current key freshest
-        remove(keys, key);
-        keys.push(key);
-      } else {
-        cache[key] = vnode;
-        keys.push(key);
-        // prune oldest entry
-        if (this.max && keys.length > parseInt(this.max)) {
-          pruneCacheEntry(cache, keys[0], keys, this._vnode);
-        }
-      }
-
-      vnode.data.keepAlive = true;
-    }
-    return vnode || (slot && slot[0])
-  }
-};
-
-var builtInComponents = {
-  KeepAlive: KeepAlive
-};
-
-/*  */
-
-function initGlobalAPI (Vue) {
-  // config
-  var configDef = {};
-  configDef.get = function () { return config; };
-  if (process.env.NODE_ENV !== 'production') {
-    configDef.set = function () {
-      warn(
-        'Do not replace the Vue.config object, set individual fields instead.'
-      );
-    };
-  }
-  Object.defineProperty(Vue, 'config', configDef);
-
-  // exposed util methods.
-  // NOTE: these are not considered part of the public API - avoid relying on
-  // them unless you are aware of the risk.
-  Vue.util = {
-    warn: warn,
-    extend: extend,
-    mergeOptions: mergeOptions,
-    defineReactive: defineReactive$$1
-  };
-
-  Vue.set = set;
-  Vue.delete = del;
-  Vue.nextTick = nextTick;
-
-  Vue.options = Object.create(null);
-  ASSET_TYPES.forEach(function (type) {
-    Vue.options[type + 's'] = Object.create(null);
-  });
-
-  // this is used to identify the "base" constructor to extend all plain-object
-  // components with in Weex's multi-instance scenarios.
-  Vue.options._base = Vue;
-
-  extend(Vue.options.components, builtInComponents);
-
-  initUse(Vue);
-  initMixin$1(Vue);
-  initExtend(Vue);
-  initAssetRegisters(Vue);
-}
-
-initGlobalAPI(Vue);
-
-Object.defineProperty(Vue.prototype, '$isServer', {
-  get: isServerRendering
-});
-
-Object.defineProperty(Vue.prototype, '$ssrContext', {
-  get: function get () {
-    /* istanbul ignore next */
-    return this.$vnode && this.$vnode.ssrContext
-  }
-});
-
-// expose FunctionalRenderContext for ssr runtime helper installation
-Object.defineProperty(Vue, 'FunctionalRenderContext', {
-  value: FunctionalRenderContext
-});
-
-Vue.version = '2.5.22';
-
-/*  */
-
-// these are reserved for web because they are directly compiled away
-// during template compilation
-var isReservedAttr = makeMap('style,class');
-
-// attributes that should be using props for binding
-var acceptValue = makeMap('input,textarea,option,select,progress');
-var mustUseProp = function (tag, type, attr) {
-  return (
-    (attr === 'value' && acceptValue(tag)) && type !== 'button' ||
-    (attr === 'selected' && tag === 'option') ||
-    (attr === 'checked' && tag === 'input') ||
-    (attr === 'muted' && tag === 'video')
-  )
-};
-
-var isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck');
-
-var isBooleanAttr = makeMap(
-  'allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' +
-  'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' +
-  'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' +
-  'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' +
-  'required,reversed,scoped,seamless,selected,sortable,translate,' +
-  'truespeed,typemustmatch,visible'
-);
-
-var xlinkNS = 'http://www.w3.org/1999/xlink';
-
-var isXlink = function (name) {
-  return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink'
-};
-
-var getXlinkProp = function (name) {
-  return isXlink(name) ? name.slice(6, name.length) : ''
-};
-
-var isFalsyAttrValue = function (val) {
-  return val == null || val === false
-};
-
-/*  */
-
-function genClassForVnode (vnode) {
-  var data = vnode.data;
-  var parentNode = vnode;
-  var childNode = vnode;
-  while (isDef(childNode.componentInstance)) {
-    childNode = childNode.componentInstance._vnode;
-    if (childNode && childNode.data) {
-      data = mergeClassData(childNode.data, data);
-    }
-  }
-  while (isDef(parentNode = parentNode.parent)) {
-    if (parentNode && parentNode.data) {
-      data = mergeClassData(data, parentNode.data);
-    }
-  }
-  return renderClass(data.staticClass, data.class)
-}
-
-function mergeClassData (child, parent) {
-  return {
-    staticClass: concat(child.staticClass, parent.staticClass),
-    class: isDef(child.class)
-      ? [child.class, parent.class]
-      : parent.class
-  }
-}
-
-function renderClass (
-  staticClass,
-  dynamicClass
-) {
-  if (isDef(staticClass) || isDef(dynamicClass)) {
-    return concat(staticClass, stringifyClass(dynamicClass))
-  }
-  /* istanbul ignore next */
-  return ''
-}
-
-function concat (a, b) {
-  return a ? b ? (a + ' ' + b) : a : (b || '')
-}
-
-function stringifyClass (value) {
-  if (Array.isArray(value)) {
-    return stringifyArray(value)
-  }
-  if (isObject(value)) {
-    return stringifyObject(value)
-  }
-  if (typeof value === 'string') {
-    return value
-  }
-  /* istanbul ignore next */
-  return ''
-}
-
-function stringifyArray (value) {
-  var res = '';
-  var stringified;
-  for (var i = 0, l = value.length; i < l; i++) {
-    if (isDef(stringified = stringifyClass(value[i])) && stringified !== '') {
-      if (res) { res += ' '; }
-      res += stringified;
-    }
-  }
-  return res
-}
-
-function stringifyObject (value) {
-  var res = '';
-  for (var key in value) {
-    if (value[key]) {
-      if (res) { res += ' '; }
-      res += key;
-    }
-  }
-  return res
-}
-
-/*  */
-
-var namespaceMap = {
-  svg: 'http://www.w3.org/2000/svg',
-  math: 'http://www.w3.org/1998/Math/MathML'
-};
-
-var isHTMLTag = makeMap(
-  'html,body,base,head,link,meta,style,title,' +
-  'address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,' +
-  'div,dd,dl,dt,figcaption,figure,picture,hr,img,li,main,ol,p,pre,ul,' +
-  'a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,' +
-  's,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video,' +
-  'embed,object,param,source,canvas,script,noscript,del,ins,' +
-  'caption,col,colgroup,table,thead,tbody,td,th,tr,' +
-  'button,datalist,fieldset,form,input,label,legend,meter,optgroup,option,' +
-  'output,progress,select,textarea,' +
-  'details,dialog,menu,menuitem,summary,' +
-  'content,element,shadow,template,blockquote,iframe,tfoot'
-);
-
-// this map is intentionally selective, only covering SVG elements that may
-// contain child elements.
-var isSVG = makeMap(
-  'svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,font-face,' +
-  'foreignObject,g,glyph,image,line,marker,mask,missing-glyph,path,pattern,' +
-  'polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view',
-  true
-);
-
-var isPreTag = function (tag) { return tag === 'pre'; };
-
-var isReservedTag = function (tag) {
-  return isHTMLTag(tag) || isSVG(tag)
-};
-
-function getTagNamespace (tag) {
-  if (isSVG(tag)) {
-    return 'svg'
-  }
-  // basic support for MathML
-  // note it doesn't support other MathML elements being component roots
-  if (tag === 'math') {
-    return 'math'
-  }
-}
-
-var unknownElementCache = Object.create(null);
-function isUnknownElement (tag) {
-  /* istanbul ignore if */
-  if (!inBrowser) {
-    return true
-  }
-  if (isReservedTag(tag)) {
-    return false
-  }
-  tag = tag.toLowerCase();
-  /* istanbul ignore if */
-  if (unknownElementCache[tag] != null) {
-    return unknownElementCache[tag]
-  }
-  var el = document.createElement(tag);
-  if (tag.indexOf('-') > -1) {
-    // http://stackoverflow.com/a/28210364/1070244
-    return (unknownElementCache[tag] = (
-      el.constructor === window.HTMLUnknownElement ||
-      el.constructor === window.HTMLElement
-    ))
-  } else {
-    return (unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString()))
-  }
-}
-
-var isTextInputType = makeMap('text,number,password,search,email,tel,url');
-
-/*  */
-
-/**
- * Query an element selector if it's not an element already.
- */
-function query (el) {
-  if (typeof el === 'string') {
-    var selected = document.querySelector(el);
-    if (!selected) {
-      process.env.NODE_ENV !== 'production' && warn(
-        'Cannot find element: ' + el
-      );
-      return document.createElement('div')
-    }
-    return selected
-  } else {
-    return el
-  }
-}
-
-/*  */
-
-function createElement$1 (tagName, vnode) {
-  var elm = document.createElement(tagName);
-  if (tagName !== 'select') {
-    return elm
-  }
-  // false or null will remove the attribute but undefined will not
-  if (vnode.data && vnode.data.attrs && vnode.data.attrs.multiple !== undefined) {
-    elm.setAttribute('multiple', 'multiple');
-  }
-  return elm
-}
-
-function createElementNS (namespace, tagName) {
-  return document.createElementNS(namespaceMap[namespace], tagName)
-}
-
-function createTextNode (text) {
-  return document.createTextNode(text)
-}
-
-function createComment (text) {
-  return document.createComment(text)
-}
-
-function insertBefore (parentNode, newNode, referenceNode) {
-  parentNode.insertBefore(newNode, referenceNode);
-}
-
-function removeChild (node, child) {
-  node.removeChild(child);
-}
-
-function appendChild (node, child) {
-  node.appendChild(child);
-}
-
-function parentNode (node) {
-  return node.parentNode
-}
-
-function nextSibling (node) {
-  return node.nextSibling
-}
-
-function tagName (node) {
-  return node.tagName
-}
-
-function setTextContent (node, text) {
-  node.textContent = text;
-}
-
-function setStyleScope (node, scopeId) {
-  node.setAttribute(scopeId, '');
-}
-
-var nodeOps = /*#__PURE__*/Object.freeze({
-  createElement: createElement$1,
-  createElementNS: createElementNS,
-  createTextNode: createTextNode,
-  createComment: createComment,
-  insertBefore: insertBefore,
-  removeChild: removeChild,
-  appendChild: appendChild,
-  parentNode: parentNode,
-  nextSibling: nextSibling,
-  tagName: tagName,
-  setTextContent: setTextContent,
-  setStyleScope: setStyleScope
-});
-
-/*  */
-
-var ref = {
-  create: function create (_, vnode) {
-    registerRef(vnode);
-  },
-  update: function update (oldVnode, vnode) {
-    if (oldVnode.data.ref !== vnode.data.ref) {
-      registerRef(oldVnode, true);
-      registerRef(vnode);
-    }
-  },
-  destroy: function destroy (vnode) {
-    registerRef(vnode, true);
-  }
-};
-
-function registerRef (vnode, isRemoval) {
-  var key = vnode.data.ref;
-  if (!isDef(key)) { return }
-
-  var vm = vnode.context;
-  var ref = vnode.componentInstance || vnode.elm;
-  var refs = vm.$refs;
-  if (isRemoval) {
-    if (Array.isArray(refs[key])) {
-      remove(refs[key], ref);
-    } else if (refs[key] === ref) {
-      refs[key] = undefined;
-    }
-  } else {
-    if (vnode.data.refInFor) {
-      if (!Array.isArray(refs[key])) {
-        refs[key] = [ref];
-      } else if (refs[key].indexOf(ref) < 0) {
-        // $flow-disable-line
-        refs[key].push(ref);
-      }
-    } else {
-      refs[key] = ref;
-    }
-  }
-}
-
-/**
- * Virtual DOM patching algorithm based on Snabbdom by
- * Simon Friis Vindum (@paldepind)
- * Licensed under the MIT License
- * https://github.com/paldepind/snabbdom/blob/master/LICENSE
- *
- * modified by Evan You (@yyx990803)
- *
- * Not type-checking this because this file is perf-critical and the cost
- * of making flow understand it is not worth it.
- */
-
-var emptyNode = new VNode('', {}, []);
-
-var hooks = ['create', 'activate', 'update', 'remove', 'destroy'];
-
-function sameVnode (a, b) {
-  return (
-    a.key === b.key && (
-      (
-        a.tag === b.tag &&
-        a.isComment === b.isComment &&
-        isDef(a.data) === isDef(b.data) &&
-        sameInputType(a, b)
-      ) || (
-        isTrue(a.isAsyncPlaceholder) &&
-        a.asyncFactory === b.asyncFactory &&
-        isUndef(b.asyncFactory.error)
-      )
-    )
-  )
-}
-
-function sameInputType (a, b) {
-  if (a.tag !== 'input') { return true }
-  var i;
-  var typeA = isDef(i = a.data) && isDef(i = i.attrs) && i.type;
-  var typeB = isDef(i = b.data) && isDef(i = i.attrs) && i.type;
-  return typeA === typeB || isTextInputType(typeA) && isTextInputType(typeB)
-}
-
-function createKeyToOldIdx (children, beginIdx, endIdx) {
-  var i, key;
-  var map = {};
-  for (i = beginIdx; i <= endIdx; ++i) {
-    key = children[i].key;
-    if (isDef(key)) { map[key] = i; }
-  }
-  return map
-}
-
-function createPatchFunction (backend) {
-  var i, j;
-  var cbs = {};
-
-  var modules = backend.modules;
-  var nodeOps = backend.nodeOps;
-
-  for (i = 0; i < hooks.length; ++i) {
-    cbs[hooks[i]] = [];
-    for (j = 0; j < modules.length; ++j) {
-      if (isDef(modules[j][hooks[i]])) {
-        cbs[hooks[i]].push(modules[j][hooks[i]]);
-      }
-    }
-  }
-
-  function emptyNodeAt (elm) {
-    return new VNode(nodeOps.tagName(elm).toLowerCase(), {}, [], undefined, elm)
-  }
-
-  function createRmCb (childElm, listeners) {
-    function remove$$1 () {
-      if (--remove$$1.listeners === 0) {
-        removeNode(childElm);
-      }
-    }
-    remove$$1.listeners = listeners;
-    return remove$$1
-  }
-
-  function removeNode (el) {
-    var parent = nodeOps.parentNode(el);
-    // element may have already been removed due to v-html / v-text
-    if (isDef(parent)) {
-      nodeOps.removeChild(parent, el);
-    }
-  }
-
-  function isUnknownElement$$1 (vnode, inVPre) {
-    return (
-      !inVPre &&
-      !vnode.ns &&
-      !(
-        config.ignoredElements.length &&
-        config.ignoredElements.some(function (ignore) {
-          return isRegExp(ignore)
-            ? ignore.test(vnode.tag)
-            : ignore === vnode.tag
-        })
-      ) &&
-      config.isUnknownElement(vnode.tag)
-    )
-  }
-
-  var creatingElmInVPre = 0;
-
-  function createElm (
-    vnode,
-    insertedVnodeQueue,
-    parentElm,
-    refElm,
-    nested,
-    ownerArray,
-    index
-  ) {
-    if (isDef(vnode.elm) && isDef(ownerArray)) {
-      // This vnode was used in a previous render!
-      // now it's used as a new node, overwriting its elm would cause
-      // potential patch errors down the road when it's used as an insertion
-      // reference node. Instead, we clone the node on-demand before creating
-      // associated DOM element for it.
-      vnode = ownerArray[index] = cloneVNode(vnode);
-    }
-
-    vnode.isRootInsert = !nested; // for transition enter check
-    if (createComponent(vnode, insertedVnodeQueue, parentElm, refElm)) {
-      return
-    }
-
-    var data = vnode.data;
-    var children = vnode.children;
-    var tag = vnode.tag;
-    if (isDef(tag)) {
-      if (process.env.NODE_ENV !== 'production') {
-        if (data && data.pre) {
-          creatingElmInVPre++;
-        }
-        if (isUnknownElement$$1(vnode, creatingElmInVPre)) {
-          warn(
-            'Unknown custom element: <' + tag + '> - did you ' +
-            'register the component correctly? For recursive components, ' +
-            'make sure to provide the "name" option.',
-            vnode.context
-          );
-        }
-      }
-
-      vnode.elm = vnode.ns
-        ? nodeOps.createElementNS(vnode.ns, tag)
-        : nodeOps.createElement(tag, vnode);
-      setScope(vnode);
-
-      /* istanbul ignore if */
-      {
-        createChildren(vnode, children, insertedVnodeQueue);
-        if (isDef(data)) {
-          invokeCreateHooks(vnode, insertedVnodeQueue);
-        }
-        insert(parentElm, vnode.elm, refElm);
-      }
-
-      if (process.env.NODE_ENV !== 'production' && data && data.pre) {
-        creatingElmInVPre--;
-      }
-    } else if (isTrue(vnode.isComment)) {
-      vnode.elm = nodeOps.createComment(vnode.text);
-      insert(parentElm, vnode.elm, refElm);
-    } else {
-      vnode.elm = nodeOps.createTextNode(vnode.text);
-      insert(parentElm, vnode.elm, refElm);
-    }
-  }
-
-  function createComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
-    var i = vnode.data;
-    if (isDef(i)) {
-      var isReactivated = isDef(vnode.componentInstance) && i.keepAlive;
-      if (isDef(i = i.hook) && isDef(i = i.init)) {
-        i(vnode, false /* hydrating */);
-      }
-      // after calling the init hook, if the vnode is a child component
-      // it should've created a child instance and mounted it. the child
-      // component also has set the placeholder vnode's elm.
-      // in that case we can just return the element and be done.
-      if (isDef(vnode.componentInstance)) {
-        initComponent(vnode, insertedVnodeQueue);
-        insert(parentElm, vnode.elm, refElm);
-        if (isTrue(isReactivated)) {
-          reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm);
-        }
-        return true
-      }
-    }
-  }
-
-  function initComponent (vnode, insertedVnodeQueue) {
-    if (isDef(vnode.data.pendingInsert)) {
-      insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert);
-      vnode.data.pendingInsert = null;
-    }
-    vnode.elm = vnode.componentInstance.$el;
-    if (isPatchable(vnode)) {
-      invokeCreateHooks(vnode, insertedVnodeQueue);
-      setScope(vnode);
-    } else {
-      // empty component root.
-      // skip all element-related modules except for ref (#3455)
-      registerRef(vnode);
-      // make sure to invoke the insert hook
-      insertedVnodeQueue.push(vnode);
-    }
-  }
-
-  function reactivateComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
-    var i;
-    // hack for #4339: a reactivated component with inner transition
-    // does not trigger because the inner node's created hooks are not called
-    // again. It's not ideal to involve module-specific logic in here but
-    // there doesn't seem to be a better way to do it.
-    var innerNode = vnode;
-    while (innerNode.componentInstance) {
-      innerNode = innerNode.componentInstance._vnode;
-      if (isDef(i = innerNode.data) && isDef(i = i.transition)) {
-        for (i = 0; i < cbs.activate.length; ++i) {
-          cbs.activate[i](emptyNode, innerNode);
-        }
-        insertedVnodeQueue.push(innerNode);
-        break
-      }
-    }
-    // unlike a newly created component,
-    // a reactivated keep-alive component doesn't insert itself
-    insert(parentElm, vnode.elm, refElm);
-  }
-
-  function insert (parent, elm, ref$$1) {
-    if (isDef(parent)) {
-      if (isDef(ref$$1)) {
-        if (nodeOps.parentNode(ref$$1) === parent) {
-          nodeOps.insertBefore(parent, elm, ref$$1);
-        }
-      } else {
-        nodeOps.appendChild(parent, elm);
-      }
-    }
-  }
-
-  function createChildren (vnode, children, insertedVnodeQueue) {
-    if (Array.isArray(children)) {
-      if (process.env.NODE_ENV !== 'production') {
-        checkDuplicateKeys(children);
-      }
-      for (var i = 0; i < children.length; ++i) {
-        createElm(children[i], insertedVnodeQueue, vnode.elm, null, true, children, i);
-      }
-    } else if (isPrimitive(vnode.text)) {
-      nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(String(vnode.text)));
-    }
-  }
-
-  function isPatchable (vnode) {
-    while (vnode.componentInstance) {
-      vnode = vnode.componentInstance._vnode;
-    }
-    return isDef(vnode.tag)
-  }
-
-  function invokeCreateHooks (vnode, insertedVnodeQueue) {
-    for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
-      cbs.create[i$1](emptyNode, vnode);
-    }
-    i = vnode.data.hook; // Reuse variable
-    if (isDef(i)) {
-      if (isDef(i.create)) { i.create(emptyNode, vnode); }
-      if (isDef(i.insert)) { insertedVnodeQueue.push(vnode); }
-    }
-  }
-
-  // set scope id attribute for scoped CSS.
-  // this is implemented as a special case to avoid the overhead
-  // of going through the normal attribute patching process.
-  function setScope (vnode) {
-    var i;
-    if (isDef(i = vnode.fnScopeId)) {
-      nodeOps.setStyleScope(vnode.elm, i);
-    } else {
-      var ancestor = vnode;
-      while (ancestor) {
-        if (isDef(i = ancestor.context) && isDef(i = i.$options._scopeId)) {
-          nodeOps.setStyleScope(vnode.elm, i);
-        }
-        ancestor = ancestor.parent;
-      }
-    }
-    // for slot content they should also get the scopeId from the host instance.
-    if (isDef(i = activeInstance) &&
-      i !== vnode.context &&
-      i !== vnode.fnContext &&
-      isDef(i = i.$options._scopeId)
-    ) {
-      nodeOps.setStyleScope(vnode.elm, i);
-    }
-  }
-
-  function addVnodes (parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) {
-    for (; startIdx <= endIdx; ++startIdx) {
-      createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm, false, vnodes, startIdx);
-    }
-  }
-
-  function invokeDestroyHook (vnode) {
-    var i, j;
-    var data = vnode.data;
-    if (isDef(data)) {
-      if (isDef(i = data.hook) && isDef(i = i.destroy)) { i(vnode); }
-      for (i = 0; i < cbs.destroy.length; ++i) { cbs.destroy[i](vnode); }
-    }
-    if (isDef(i = vnode.children)) {
-      for (j = 0; j < vnode.children.length; ++j) {
-        invokeDestroyHook(vnode.children[j]);
-      }
-    }
-  }
-
-  function removeVnodes (parentElm, vnodes, startIdx, endIdx) {
-    for (; startIdx <= endIdx; ++startIdx) {
-      var ch = vnodes[startIdx];
-      if (isDef(ch)) {
-        if (isDef(ch.tag)) {
-          removeAndInvokeRemoveHook(ch);
-          invokeDestroyHook(ch);
-        } else { // Text node
-          removeNode(ch.elm);
-        }
-      }
-    }
-  }
-
-  function removeAndInvokeRemoveHook (vnode, rm) {
-    if (isDef(rm) || isDef(vnode.data)) {
-      var i;
-      var listeners = cbs.remove.length + 1;
-      if (isDef(rm)) {
-        // we have a recursively passed down rm callback
-        // increase the listeners count
-        rm.listeners += listeners;
-      } else {
-        // directly removing
-        rm = createRmCb(vnode.elm, listeners);
-      }
-      // recursively invoke hooks on child component root node
-      if (isDef(i = vnode.componentInstance) && isDef(i = i._vnode) && isDef(i.data)) {
-        removeAndInvokeRemoveHook(i, rm);
-      }
-      for (i = 0; i < cbs.remove.length; ++i) {
-        cbs.remove[i](vnode, rm);
-      }
-      if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) {
-        i(vnode, rm);
-      } else {
-        rm();
-      }
-    } else {
-      removeNode(vnode.elm);
-    }
-  }
-
-  function updateChildren (parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) {
-    var oldStartIdx = 0;
-    var newStartIdx = 0;
-    var oldEndIdx = oldCh.length - 1;
-    var oldStartVnode = oldCh[0];
-    var oldEndVnode = oldCh[oldEndIdx];
-    var newEndIdx = newCh.length - 1;
-    var newStartVnode = newCh[0];
-    var newEndVnode = newCh[newEndIdx];
-    var oldKeyToIdx, idxInOld, vnodeToMove, refElm;
-
-    // removeOnly is a special flag used only by <transition-group>
-    // to ensure removed elements stay in correct relative positions
-    // during leaving transitions
-    var canMove = !removeOnly;
-
-    if (process.env.NODE_ENV !== 'production') {
-      checkDuplicateKeys(newCh);
-    }
-
-    while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {
-      if (isUndef(oldStartVnode)) {
-        oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left
-      } else if (isUndef(oldEndVnode)) {
-        oldEndVnode = oldCh[--oldEndIdx];
-      } else if (sameVnode(oldStartVnode, newStartVnode)) {
-        patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
-        oldStartVnode = oldCh[++oldStartIdx];
-        newStartVnode = newCh[++newStartIdx];
-      } else if (sameVnode(oldEndVnode, newEndVnode)) {
-        patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
-        oldEndVnode = oldCh[--oldEndIdx];
-        newEndVnode = newCh[--newEndIdx];
-      } else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right
-        patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
-        canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm));
-        oldStartVnode = oldCh[++oldStartIdx];
-        newEndVnode = newCh[--newEndIdx];
-      } else if (sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left
-        patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
-        canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm);
-        oldEndVnode = oldCh[--oldEndIdx];
-        newStartVnode = newCh[++newStartIdx];
-      } else {
-        if (isUndef(oldKeyToIdx)) { oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx); }
-        idxInOld = isDef(newStartVnode.key)
-          ? oldKeyToIdx[newStartVnode.key]
-          : findIdxInOld(newStartVnode, oldCh, oldStartIdx, oldEndIdx);
-        if (isUndef(idxInOld)) { // New element
-          createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
-        } else {
-          vnodeToMove = oldCh[idxInOld];
-          if (sameVnode(vnodeToMove, newStartVnode)) {
-            patchVnode(vnodeToMove, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
-            oldCh[idxInOld] = undefined;
-            canMove && nodeOps.insertBefore(parentElm, vnodeToMove.elm, oldStartVnode.elm);
-          } else {
-            // same key but different element. treat as new element
-            createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
-          }
-        }
-        newStartVnode = newCh[++newStartIdx];
-      }
-    }
-    if (oldStartIdx > oldEndIdx) {
-      refElm = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
-      addVnodes(parentElm, refElm, newCh, newStartIdx, newEndIdx, insertedVnodeQueue);
-    } else if (newStartIdx > newEndIdx) {
-      removeVnodes(parentElm, oldCh, oldStartIdx, oldEndIdx);
-    }
-  }
-
-  function checkDuplicateKeys (children) {
-    var seenKeys = {};
-    for (var i = 0; i < children.length; i++) {
-      var vnode = children[i];
-      var key = vnode.key;
-      if (isDef(key)) {
-        if (seenKeys[key]) {
-          warn(
-            ("Duplicate keys detected: '" + key + "'. This may cause an update error."),
-            vnode.context
-          );
-        } else {
-          seenKeys[key] = true;
-        }
-      }
-    }
-  }
-
-  function findIdxInOld (node, oldCh, start, end) {
-    for (var i = start; i < end; i++) {
-      var c = oldCh[i];
-      if (isDef(c) && sameVnode(node, c)) { return i }
-    }
-  }
-
-  function patchVnode (
-    oldVnode,
-    vnode,
-    insertedVnodeQueue,
-    ownerArray,
-    index,
-    removeOnly
-  ) {
-    if (oldVnode === vnode) {
-      return
-    }
-
-    if (isDef(vnode.elm) && isDef(ownerArray)) {
-      // clone reused vnode
-      vnode = ownerArray[index] = cloneVNode(vnode);
-    }
-
-    var elm = vnode.elm = oldVnode.elm;
-
-    if (isTrue(oldVnode.isAsyncPlaceholder)) {
-      if (isDef(vnode.asyncFactory.resolved)) {
-        hydrate(oldVnode.elm, vnode, insertedVnodeQueue);
-      } else {
-        vnode.isAsyncPlaceholder = true;
-      }
-      return
-    }
-
-    // reuse element for static trees.
-    // note we only do this if the vnode is cloned -
-    // if the new node is not cloned it means the render functions have been
-    // reset by the hot-reload-api and we need to do a proper re-render.
-    if (isTrue(vnode.isStatic) &&
-      isTrue(oldVnode.isStatic) &&
-      vnode.key === oldVnode.key &&
-      (isTrue(vnode.isCloned) || isTrue(vnode.isOnce))
-    ) {
-      vnode.componentInstance = oldVnode.componentInstance;
-      return
-    }
-
-    var i;
-    var data = vnode.data;
-    if (isDef(data) && isDef(i = data.hook) && isDef(i = i.prepatch)) {
-      i(oldVnode, vnode);
-    }
-
-    var oldCh = oldVnode.children;
-    var ch = vnode.children;
-    if (isDef(data) && isPatchable(vnode)) {
-      for (i = 0; i < cbs.update.length; ++i) { cbs.update[i](oldVnode, vnode); }
-      if (isDef(i = data.hook) && isDef(i = i.update)) { i(oldVnode, vnode); }
-    }
-    if (isUndef(vnode.text)) {
-      if (isDef(oldCh) && isDef(ch)) {
-        if (oldCh !== ch) { updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly); }
-      } else if (isDef(ch)) {
-        if (process.env.NODE_ENV !== 'production') {
-          checkDuplicateKeys(ch);
-        }
-        if (isDef(oldVnode.text)) { nodeOps.setTextContent(elm, ''); }
-        addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue);
-      } else if (isDef(oldCh)) {
-        removeVnodes(elm, oldCh, 0, oldCh.length - 1);
-      } else if (isDef(oldVnode.text)) {
-        nodeOps.setTextContent(elm, '');
-      }
-    } else if (oldVnode.text !== vnode.text) {
-      nodeOps.setTextContent(elm, vnode.text);
-    }
-    if (isDef(data)) {
-      if (isDef(i = data.hook) && isDef(i = i.postpatch)) { i(oldVnode, vnode); }
-    }
-  }
-
-  function invokeInsertHook (vnode, queue, initial) {
-    // delay insert hooks for component root nodes, invoke them after the
-    // element is really inserted
-    if (isTrue(initial) && isDef(vnode.parent)) {
-      vnode.parent.data.pendingInsert = queue;
-    } else {
-      for (var i = 0; i < queue.length; ++i) {
-        queue[i].data.hook.insert(queue[i]);
-      }
-    }
-  }
-
-  var hydrationBailed = false;
-  // list of modules that can skip create hook during hydration because they
-  // are already rendered on the client or has no need for initialization
-  // Note: style is excluded because it relies on initial clone for future
-  // deep updates (#7063).
-  var isRenderedModule = makeMap('attrs,class,staticClass,staticStyle,key');
-
-  // Note: this is a browser-only function so we can assume elms are DOM nodes.
-  function hydrate (elm, vnode, insertedVnodeQueue, inVPre) {
-    var i;
-    var tag = vnode.tag;
-    var data = vnode.data;
-    var children = vnode.children;
-    inVPre = inVPre || (data && data.pre);
-    vnode.elm = elm;
-
-    if (isTrue(vnode.isComment) && isDef(vnode.asyncFactory)) {
-      vnode.isAsyncPlaceholder = true;
-      return true
-    }
-    // assert node match
-    if (process.env.NODE_ENV !== 'production') {
-      if (!assertNodeMatch(elm, vnode, inVPre)) {
-        return false
-      }
-    }
-    if (isDef(data)) {
-      if (isDef(i = data.hook) && isDef(i = i.init)) { i(vnode, true /* hydrating */); }
-      if (isDef(i = vnode.componentInstance)) {
-        // child component. it should have hydrated its own tree.
-        initComponent(vnode, insertedVnodeQueue);
-        return true
-      }
-    }
-    if (isDef(tag)) {
-      if (isDef(children)) {
-        // empty element, allow client to pick up and populate children
-        if (!elm.hasChildNodes()) {
-          createChildren(vnode, children, insertedVnodeQueue);
-        } else {
-          // v-html and domProps: innerHTML
-          if (isDef(i = data) && isDef(i = i.domProps) && isDef(i = i.innerHTML)) {
-            if (i !== elm.innerHTML) {
-              /* istanbul ignore if */
-              if (process.env.NODE_ENV !== 'production' &&
-                typeof console !== 'undefined' &&
-                !hydrationBailed
-              ) {
-                hydrationBailed = true;
-                console.warn('Parent: ', elm);
-                console.warn('server innerHTML: ', i);
-                console.warn('client innerHTML: ', elm.innerHTML);
-              }
-              return false
-            }
-          } else {
-            // iterate and compare children lists
-            var childrenMatch = true;
-            var childNode = elm.firstChild;
-            for (var i$1 = 0; i$1 < children.length; i$1++) {
-              if (!childNode || !hydrate(childNode, children[i$1], insertedVnodeQueue, inVPre)) {
-                childrenMatch = false;
-                break
-              }
-              childNode = childNode.nextSibling;
-            }
-            // if childNode is not null, it means the actual childNodes list is
-            // longer than the virtual children list.
-            if (!childrenMatch || childNode) {
-              /* istanbul ignore if */
-              if (process.env.NODE_ENV !== 'production' &&
-                typeof console !== 'undefined' &&
-                !hydrationBailed
-              ) {
-                hydrationBailed = true;
-                console.warn('Parent: ', elm);
-                console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children);
-              }
-              return false
-            }
-          }
-        }
-      }
-      if (isDef(data)) {
-        var fullInvoke = false;
-        for (var key in data) {
-          if (!isRenderedModule(key)) {
-            fullInvoke = true;
-            invokeCreateHooks(vnode, insertedVnodeQueue);
-            break
-          }
-        }
-        if (!fullInvoke && data['class']) {
-          // ensure collecting deps for deep class bindings for future updates
-          traverse(data['class']);
-        }
-      }
-    } else if (elm.data !== vnode.text) {
-      elm.data = vnode.text;
-    }
-    return true
-  }
-
-  function assertNodeMatch (node, vnode, inVPre) {
-    if (isDef(vnode.tag)) {
-      return vnode.tag.indexOf('vue-component') === 0 || (
-        !isUnknownElement$$1(vnode, inVPre) &&
-        vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase())
-      )
-    } else {
-      return node.nodeType === (vnode.isComment ? 8 : 3)
-    }
-  }
-
-  return function patch (oldVnode, vnode, hydrating, removeOnly) {
-    if (isUndef(vnode)) {
-      if (isDef(oldVnode)) { invokeDestroyHook(oldVnode); }
-      return
-    }
-
-    var isInitialPatch = false;
-    var insertedVnodeQueue = [];
-
-    if (isUndef(oldVnode)) {
-      // empty mount (likely as component), create new root element
-      isInitialPatch = true;
-      createElm(vnode, insertedVnodeQueue);
-    } else {
-      var isRealElement = isDef(oldVnode.nodeType);
-      if (!isRealElement && sameVnode(oldVnode, vnode)) {
-        // patch existing root node
-        patchVnode(oldVnode, vnode, insertedVnodeQueue, null, null, removeOnly);
-      } else {
-        if (isRealElement) {
-          // mounting to a real element
-          // check if this is server-rendered content and if we can perform
-          // a successful hydration.
-          if (oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) {
-            oldVnode.removeAttribute(SSR_ATTR);
-            hydrating = true;
-          }
-          if (isTrue(hydrating)) {
-            if (hydrate(oldVnode, vnode, insertedVnodeQueue)) {
-              invokeInsertHook(vnode, insertedVnodeQueue, true);
-              return oldVnode
-            } else if (process.env.NODE_ENV !== 'production') {
-              warn(
-                'The client-side rendered virtual DOM tree is not matching ' +
-                'server-rendered content. This is likely caused by incorrect ' +
-                'HTML markup, for example nesting block-level elements inside ' +
-                '<p>, or missing <tbody>. Bailing hydration and performing ' +
-                'full client-side render.'
-              );
-            }
-          }
-          // either not server-rendered, or hydration failed.
-          // create an empty node and replace it
-          oldVnode = emptyNodeAt(oldVnode);
-        }
-
-        // replacing existing element
-        var oldElm = oldVnode.elm;
-        var parentElm = nodeOps.parentNode(oldElm);
-
-        // create new node
-        createElm(
-          vnode,
-          insertedVnodeQueue,
-          // extremely rare edge case: do not insert if old element is in a
-          // leaving transition. Only happens when combining transition +
-          // keep-alive + HOCs. (#4590)
-          oldElm._leaveCb ? null : parentElm,
-          nodeOps.nextSibling(oldElm)
-        );
-
-        // update parent placeholder node element, recursively
-        if (isDef(vnode.parent)) {
-          var ancestor = vnode.parent;
-          var patchable = isPatchable(vnode);
-          while (ancestor) {
-            for (var i = 0; i < cbs.destroy.length; ++i) {
-              cbs.destroy[i](ancestor);
-            }
-            ancestor.elm = vnode.elm;
-            if (patchable) {
-              for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
-                cbs.create[i$1](emptyNode, ancestor);
-              }
-              // #6513
-              // invoke insert hooks that may have been merged by create hooks.
-              // e.g. for directives that uses the "inserted" hook.
-              var insert = ancestor.data.hook.insert;
-              if (insert.merged) {
-                // start at index 1 to avoid re-invoking component mounted hook
-                for (var i$2 = 1; i$2 < insert.fns.length; i$2++) {
-                  insert.fns[i$2]();
-                }
-              }
-            } else {
-              registerRef(ancestor);
-            }
-            ancestor = ancestor.parent;
-          }
-        }
-
-        // destroy old node
-        if (isDef(parentElm)) {
-          removeVnodes(parentElm, [oldVnode], 0, 0);
-        } else if (isDef(oldVnode.tag)) {
-          invokeDestroyHook(oldVnode);
-        }
-      }
-    }
-
-    invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch);
-    return vnode.elm
-  }
-}
-
-/*  */
-
-var directives = {
-  create: updateDirectives,
-  update: updateDirectives,
-  destroy: function unbindDirectives (vnode) {
-    updateDirectives(vnode, emptyNode);
-  }
-};
-
-function updateDirectives (oldVnode, vnode) {
-  if (oldVnode.data.directives || vnode.data.directives) {
-    _update(oldVnode, vnode);
-  }
-}
-
-function _update (oldVnode, vnode) {
-  var isCreate = oldVnode === emptyNode;
-  var isDestroy = vnode === emptyNode;
-  var oldDirs = normalizeDirectives$1(oldVnode.data.directives, oldVnode.context);
-  var newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context);
-
-  var dirsWithInsert = [];
-  var dirsWithPostpatch = [];
-
-  var key, oldDir, dir;
-  for (key in newDirs) {
-    oldDir = oldDirs[key];
-    dir = newDirs[key];
-    if (!oldDir) {
-      // new directive, bind
-      callHook$1(dir, 'bind', vnode, oldVnode);
-      if (dir.def && dir.def.inserted) {
-        dirsWithInsert.push(dir);
-      }
-    } else {
-      // existing directive, update
-      dir.oldValue = oldDir.value;
-      callHook$1(dir, 'update', vnode, oldVnode);
-      if (dir.def && dir.def.componentUpdated) {
-        dirsWithPostpatch.push(dir);
-      }
-    }
-  }
-
-  if (dirsWithInsert.length) {
-    var callInsert = function () {
-      for (var i = 0; i < dirsWithInsert.length; i++) {
-        callHook$1(dirsWithInsert[i], 'inserted', vnode, oldVnode);
-      }
-    };
-    if (isCreate) {
-      mergeVNodeHook(vnode, 'insert', callInsert);
-    } else {
-      callInsert();
-    }
-  }
-
-  if (dirsWithPostpatch.length) {
-    mergeVNodeHook(vnode, 'postpatch', function () {
-      for (var i = 0; i < dirsWithPostpatch.length; i++) {
-        callHook$1(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode);
-      }
-    });
-  }
-
-  if (!isCreate) {
-    for (key in oldDirs) {
-      if (!newDirs[key]) {
-        // no longer present, unbind
-        callHook$1(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy);
-      }
-    }
-  }
-}
-
-var emptyModifiers = Object.create(null);
-
-function normalizeDirectives$1 (
-  dirs,
-  vm
-) {
-  var res = Object.create(null);
-  if (!dirs) {
-    // $flow-disable-line
-    return res
-  }
-  var i, dir;
-  for (i = 0; i < dirs.length; i++) {
-    dir = dirs[i];
-    if (!dir.modifiers) {
-      // $flow-disable-line
-      dir.modifiers = emptyModifiers;
-    }
-    res[getRawDirName(dir)] = dir;
-    dir.def = resolveAsset(vm.$options, 'directives', dir.name, true);
-  }
-  // $flow-disable-line
-  return res
-}
-
-function getRawDirName (dir) {
-  return dir.rawName || ((dir.name) + "." + (Object.keys(dir.modifiers || {}).join('.')))
-}
-
-function callHook$1 (dir, hook, vnode, oldVnode, isDestroy) {
-  var fn = dir.def && dir.def[hook];
-  if (fn) {
-    try {
-      fn(vnode.elm, dir, vnode, oldVnode, isDestroy);
-    } catch (e) {
-      handleError(e, vnode.context, ("directive " + (dir.name) + " " + hook + " hook"));
-    }
-  }
-}
-
-var baseModules = [
-  ref,
-  directives
-];
-
-/*  */
-
-function updateAttrs (oldVnode, vnode) {
-  var opts = vnode.componentOptions;
-  if (isDef(opts) && opts.Ctor.options.inheritAttrs === false) {
-    return
-  }
-  if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {
-    return
-  }
-  var key, cur, old;
-  var elm = vnode.elm;
-  var oldAttrs = oldVnode.data.attrs || {};
-  var attrs = vnode.data.attrs || {};
-  // clone observed objects, as the user probably wants to mutate it
-  if (isDef(attrs.__ob__)) {
-    attrs = vnode.data.attrs = extend({}, attrs);
-  }
-
-  for (key in attrs) {
-    cur = attrs[key];
-    old = oldAttrs[key];
-    if (old !== cur) {
-      setAttr(elm, key, cur);
-    }
-  }
-  // #4391: in IE9, setting type can reset value for input[type=radio]
-  // #6666: IE/Edge forces progress value down to 1 before setting a max
-  /* istanbul ignore if */
-  if ((isIE || isEdge) && attrs.value !== oldAttrs.value) {
-    setAttr(elm, 'value', attrs.value);
-  }
-  for (key in oldAttrs) {
-    if (isUndef(attrs[key])) {
-      if (isXlink(key)) {
-        elm.removeAttributeNS(xlinkNS, getXlinkProp(key));
-      } else if (!isEnumeratedAttr(key)) {
-        elm.removeAttribute(key);
-      }
-    }
-  }
-}
-
-function setAttr (el, key, value) {
-  if (el.tagName.indexOf('-') > -1) {
-    baseSetAttr(el, key, value);
-  } else if (isBooleanAttr(key)) {
-    // set attribute for blank value
-    // e.g. <option disabled>Select one</option>
-    if (isFalsyAttrValue(value)) {
-      el.removeAttribute(key);
-    } else {
-      // technically allowfullscreen is a boolean attribute for <iframe>,
-      // but Flash expects a value of "true" when used on <embed> tag
-      value = key === 'allowfullscreen' && el.tagName === 'EMBED'
-        ? 'true'
-        : key;
-      el.setAttribute(key, value);
-    }
-  } else if (isEnumeratedAttr(key)) {
-    el.setAttribute(key, 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 {
-    baseSetAttr(el, key, value);
-  }
-}
-
-function baseSetAttr (el, key, value) {
-  if (isFalsyAttrValue(value)) {
-    el.removeAttribute(key);
-  } else {
-    // #7138: IE10 & 11 fires input event when setting placeholder on
-    // <textarea>... block the first input event and remove the blocker
-    // immediately.
-    /* istanbul ignore if */
-    if (
-      isIE && !isIE9 &&
-      (el.tagName === 'TEXTAREA' || el.tagName === 'INPUT') &&
-      key === 'placeholder' && !el.__ieph
-    ) {
-      var blocker = function (e) {
-        e.stopImmediatePropagation();
-        el.removeEventListener('input', blocker);
-      };
-      el.addEventListener('input', blocker);
-      // $flow-disable-line
-      el.__ieph = true; /* IE placeholder patched */
-    }
-    el.setAttribute(key, value);
-  }
-}
-
-var attrs = {
-  create: updateAttrs,
-  update: updateAttrs
-};
-
-/*  */
-
-function updateClass (oldVnode, vnode) {
-  var el = vnode.elm;
-  var data = vnode.data;
-  var oldData = oldVnode.data;
-  if (
-    isUndef(data.staticClass) &&
-    isUndef(data.class) && (
-      isUndef(oldData) || (
-        isUndef(oldData.staticClass) &&
-        isUndef(oldData.class)
-      )
-    )
-  ) {
-    return
-  }
-
-  var cls = genClassForVnode(vnode);
-
-  // handle transition classes
-  var transitionClass = el._transitionClasses;
-  if (isDef(transitionClass)) {
-    cls = concat(cls, stringifyClass(transitionClass));
-  }
-
-  // set the class
-  if (cls !== el._prevClass) {
-    el.setAttribute('class', cls);
-    el._prevClass = cls;
-  }
-}
-
-var klass = {
-  create: updateClass,
-  update: updateClass
-};
-
-/*  */
-
-var validDivisionCharRE = /[\w).+\-_$\]]/;
-
-function parseFilters (exp) {
-  var inSingle = false;
-  var inDouble = false;
-  var inTemplateString = false;
-  var inRegex = false;
-  var curly = 0;
-  var square = 0;
-  var paren = 0;
-  var lastFilterIndex = 0;
-  var c, prev, i, expression, filters;
-
-  for (i = 0; i < exp.length; i++) {
-    prev = c;
-    c = exp.charCodeAt(i);
-    if (inSingle) {
-      if (c === 0x27 && prev !== 0x5C) { inSingle = false; }
-    } else if (inDouble) {
-      if (c === 0x22 && prev !== 0x5C) { inDouble = false; }
-    } else if (inTemplateString) {
-      if (c === 0x60 && prev !== 0x5C) { inTemplateString = false; }
-    } else if (inRegex) {
-      if (c === 0x2f && prev !== 0x5C) { inRegex = false; }
-    } else if (
-      c === 0x7C && // pipe
-      exp.charCodeAt(i + 1) !== 0x7C &&
-      exp.charCodeAt(i - 1) !== 0x7C &&
-      !curly && !square && !paren
-    ) {
-      if (expression === undefined) {
-        // first filter, end of expression
-        lastFilterIndex = i + 1;
-        expression = exp.slice(0, i).trim();
-      } else {
-        pushFilter();
-      }
-    } else {
-      switch (c) {
-        case 0x22: inDouble = true; break         // "
-        case 0x27: inSingle = true; break         // '
-        case 0x60: inTemplateString = true; break // `
-        case 0x28: paren++; break                 // (
-        case 0x29: paren--; break                 // )
-        case 0x5B: square++; break                // [
-        case 0x5D: square--; break                // ]
-        case 0x7B: curly++; break                 // {
-        case 0x7D: curly--; break                 // }
-      }
-      if (c === 0x2f) { // /
-        var j = i - 1;
-        var p = (void 0);
-        // find first non-whitespace prev char
-        for (; j >= 0; j--) {
-          p = exp.charAt(j);
-          if (p !== ' ') { break }
-        }
-        if (!p || !validDivisionCharRE.test(p)) {
-          inRegex = true;
-        }
-      }
-    }
-  }
-
-  if (expression === undefined) {
-    expression = exp.slice(0, i).trim();
-  } else if (lastFilterIndex !== 0) {
-    pushFilter();
-  }
-
-  function pushFilter () {
-    (filters || (filters = [])).push(exp.slice(lastFilterIndex, i).trim());
-    lastFilterIndex = i + 1;
-  }
-
-  if (filters) {
-    for (i = 0; i < filters.length; i++) {
-      expression = wrapFilter(expression, filters[i]);
-    }
-  }
-
-  return expression
-}
-
-function wrapFilter (exp, filter) {
-  var i = filter.indexOf('(');
-  if (i < 0) {
-    // _f: resolveFilter
-    return ("_f(\"" + filter + "\")(" + exp + ")")
-  } else {
-    var name = filter.slice(0, i);
-    var args = filter.slice(i + 1);
-    return ("_f(\"" + name + "\")(" + exp + (args !== ')' ? ',' + args : args))
-  }
-}
-
-/*  */
-
-function baseWarn (msg) {
-  console.error(("[Vue compiler]: " + 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 });
-  el.plain = false;
-}
-
-function addAttr (el, name, value) {
-  (el.attrs || (el.attrs = [])).push({ name: name, value: value });
-  el.plain = false;
-}
-
-// add a raw attr (use this in preTransforms)
-function addRawAttr (el, name, value) {
-  el.attrsMap[name] = value;
-  el.attrsList.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 });
-  el.plain = false;
-}
-
-function addHandler (
-  el,
-  name,
-  value,
-  modifiers,
-  important,
-  warn
-) {
-  modifiers = modifiers || emptyObject;
-  // warn prevent and passive modifier
-  /* istanbul ignore if */
-  if (
-    process.env.NODE_ENV !== 'production' && warn &&
-    modifiers.prevent && modifiers.passive
-  ) {
-    warn(
-      'passive and prevent can\'t be used together. ' +
-      'Passive handler can\'t prevent default event.'
-    );
-  }
-
-  // normalize click.right and click.middle since they don't actually fire
-  // this is technically browser-specific, but at least for now browsers are
-  // the only target envs that have right/middle clicks.
-  if (name === 'click') {
-    if (modifiers.right) {
-      name = 'contextmenu';
-      delete modifiers.right;
-    } else if (modifiers.middle) {
-      name = 'mouseup';
-    }
-  }
-
-  // check capture modifier
-  if (modifiers.capture) {
-    delete modifiers.capture;
-    name = '!' + name; // mark the event as captured
-  }
-  if (modifiers.once) {
-    delete modifiers.once;
-    name = '~' + name; // mark the event as once
-  }
-  /* istanbul ignore if */
-  if (modifiers.passive) {
-    delete modifiers.passive;
-    name = '&' + name; // mark the event as passive
-  }
-
-  var events;
-  if (modifiers.native) {
-    delete modifiers.native;
-    events = el.nativeEvents || (el.nativeEvents = {});
-  } else {
-    events = el.events || (el.events = {});
-  }
-
-  var newHandler = {
-    value: value.trim()
-  };
-  if (modifiers !== emptyObject) {
-    newHandler.modifiers = modifiers;
-  }
-
-  var handlers = events[name];
-  /* istanbul ignore if */
-  if (Array.isArray(handlers)) {
-    important ? handlers.unshift(newHandler) : handlers.push(newHandler);
-  } else if (handlers) {
-    events[name] = important ? [newHandler, handlers] : [handlers, newHandler];
-  } else {
-    events[name] = newHandler;
-  }
-
-  el.plain = false;
-}
-
-function getBindingAttr (
-  el,
-  name,
-  getStatic
-) {
-  var dynamicValue =
-    getAndRemoveAttr(el, ':' + name) ||
-    getAndRemoveAttr(el, 'v-bind:' + name);
-  if (dynamicValue != null) {
-    return parseFilters(dynamicValue)
-  } else if (getStatic !== false) {
-    var staticValue = getAndRemoveAttr(el, name);
-    if (staticValue != null) {
-      return JSON.stringify(staticValue)
-    }
-  }
-}
-
-// note: this only removes the attr from the Array (attrsList) so that it
-// doesn't get processed by processAttrs.
-// By default it does NOT remove it from the map (attrsMap) because the map is
-// needed during codegen.
-function getAndRemoveAttr (
-  el,
-  name,
-  removeFromMap
-) {
-  var val;
-  if ((val = el.attrsMap[name]) != null) {
-    var list = el.attrsList;
-    for (var i = 0, l = list.length; i < l; i++) {
-      if (list[i].name === name) {
-        list.splice(i, 1);
-        break
-      }
-    }
-  }
-  if (removeFromMap) {
-    delete el.attrsMap[name];
-  }
-  return val
-}
-
-/*  */
-
-/**
- * Cross-platform code generation for component v-model
- */
-function genComponentModel (
-  el,
-  value,
-  modifiers
-) {
-  var ref = modifiers || {};
-  var number = ref.number;
-  var trim = ref.trim;
-
-  var baseValueExpression = '$$v';
-  var valueExpression = baseValueExpression;
-  if (trim) {
-    valueExpression =
-      "(typeof " + baseValueExpression + " === 'string'" +
-      "? " + baseValueExpression + ".trim()" +
-      ": " + baseValueExpression + ")";
-  }
-  if (number) {
-    valueExpression = "_n(" + valueExpression + ")";
-  }
-  var assignment = genAssignmentCode(value, valueExpression);
-
-  el.model = {
-    value: ("(" + value + ")"),
-    expression: JSON.stringify(value),
-    callback: ("function (" + baseValueExpression + ") {" + assignment + "}")
-  };
-}
-
-/**
- * Cross-platform codegen helper for generating v-model value assignment code.
- */
-function genAssignmentCode (
-  value,
-  assignment
-) {
-  var res = parseModel(value);
-  if (res.key === null) {
-    return (value + "=" + assignment)
-  } else {
-    return ("$set(" + (res.exp) + ", " + (res.key) + ", " + assignment + ")")
-  }
-}
-
-/**
- * Parse a v-model expression into a base path and a final key segment.
- * Handles both dot-path and possible square brackets.
- *
- * Possible cases:
- *
- * - test
- * - test[key]
- * - test[test1[key]]
- * - test["a"][key]
- * - xxx.test[a[a].test1[key]]
- * - test.xxx.a["asa"][test1[key]]
- *
- */
-
-var len, str, chr, index$1, expressionPos, expressionEndPos;
-
-
-
-function parseModel (val) {
-  // Fix https://github.com/vuejs/vue/pull/7730
-  // allow v-model="obj.val " (trailing whitespace)
-  val = val.trim();
-  len = val.length;
-
-  if (val.indexOf('[') < 0 || val.lastIndexOf(']') < len - 1) {
-    index$1 = val.lastIndexOf('.');
-    if (index$1 > -1) {
-      return {
-        exp: val.slice(0, index$1),
-        key: '"' + val.slice(index$1 + 1) + '"'
-      }
-    } else {
-      return {
-        exp: val,
-        key: null
-      }
-    }
-  }
-
-  str = val;
-  index$1 = expressionPos = expressionEndPos = 0;
-
-  while (!eof()) {
-    chr = next();
-    /* istanbul ignore if */
-    if (isStringStart(chr)) {
-      parseString(chr);
-    } else if (chr === 0x5B) {
-      parseBracket(chr);
-    }
-  }
-
-  return {
-    exp: val.slice(0, expressionPos),
-    key: val.slice(expressionPos + 1, expressionEndPos)
-  }
-}
-
-function next () {
-  return str.charCodeAt(++index$1)
-}
-
-function eof () {
-  return index$1 >= len
-}
-
-function isStringStart (chr) {
-  return chr === 0x22 || chr === 0x27
-}
-
-function parseBracket (chr) {
-  var inBracket = 1;
-  expressionPos = index$1;
-  while (!eof()) {
-    chr = next();
-    if (isStringStart(chr)) {
-      parseString(chr);
-      continue
-    }
-    if (chr === 0x5B) { inBracket++; }
-    if (chr === 0x5D) { inBracket--; }
-    if (inBracket === 0) {
-      expressionEndPos = index$1;
-      break
-    }
-  }
-}
-
-function parseString (chr) {
-  var stringQuote = chr;
-  while (!eof()) {
-    chr = next();
-    if (chr === stringQuote) {
-      break
-    }
-  }
-}
-
-/*  */
-
-var warn$1;
-
-// in some cases, the event used has to be determined at runtime
-// so we used some reserved tokens during compile.
-var RANGE_TOKEN = '__r';
-var CHECKBOX_RADIO_TOKEN = '__c';
-
-function model (
-  el,
-  dir,
-  _warn
-) {
-  warn$1 = _warn;
-  var value = dir.value;
-  var modifiers = dir.modifiers;
-  var tag = el.tag;
-  var type = el.attrsMap.type;
-
-  if (process.env.NODE_ENV !== 'production') {
-    // inputs with type="file" are read only and setting the input's
-    // value will throw an error.
-    if (tag === 'input' && type === 'file') {
-      warn$1(
-        "<" + (el.tag) + " v-model=\"" + value + "\" type=\"file\">:\n" +
-        "File inputs are read only. Use a v-on:change listener instead."
-      );
-    }
-  }
-
-  if (el.component) {
-    genComponentModel(el, value, modifiers);
-    // component v-model doesn't need extra runtime
-    return false
-  } else if (tag === 'select') {
-    genSelect(el, value, modifiers);
-  } else if (tag === 'input' && type === 'checkbox') {
-    genCheckboxModel(el, value, modifiers);
-  } else if (tag === 'input' && type === 'radio') {
-    genRadioModel(el, value, modifiers);
-  } else if (tag === 'input' || tag === 'textarea') {
-    genDefaultModel(el, value, modifiers);
-  } else if (!config.isReservedTag(tag)) {
-    genComponentModel(el, value, modifiers);
-    // component v-model doesn't need extra runtime
-    return false
-  } else if (process.env.NODE_ENV !== 'production') {
-    warn$1(
-      "<" + (el.tag) + " v-model=\"" + value + "\">: " +
-      "v-model is not supported on this element type. " +
-      'If you are working with contenteditable, it\'s recommended to ' +
-      'wrap a library dedicated for that purpose inside a custom component.'
-    );
-  }
-
-  // ensure runtime directive metadata
-  return true
-}
-
-function genCheckboxModel (
-  el,
-  value,
-  modifiers
-) {
-  var number = modifiers && modifiers.number;
-  var valueBinding = getBindingAttr(el, 'value') || 'null';
-  var trueValueBinding = getBindingAttr(el, 'true-value') || 'true';
-  var falseValueBinding = getBindingAttr(el, 'false-value') || 'false';
-  addProp(el, 'checked',
-    "Array.isArray(" + value + ")" +
-    "?_i(" + value + "," + valueBinding + ")>-1" + (
-      trueValueBinding === 'true'
-        ? (":(" + value + ")")
-        : (":_q(" + value + "," + trueValueBinding + ")")
-    )
-  );
-  addHandler(el, 'change',
-    "var $$a=" + value + "," +
-        '$$el=$event.target,' +
-        "$$c=$$el.checked?(" + trueValueBinding + "):(" + falseValueBinding + ");" +
-    'if(Array.isArray($$a)){' +
-      "var $$v=" + (number ? '_n(' + valueBinding + ')' : valueBinding) + "," +
-          '$$i=_i($$a,$$v);' +
-      "if($$el.checked){$$i<0&&(" + (genAssignmentCode(value, '$$a.concat([$$v])')) + ")}" +
-      "else{$$i>-1&&(" + (genAssignmentCode(value, '$$a.slice(0,$$i).concat($$a.slice($$i+1))')) + ")}" +
-    "}else{" + (genAssignmentCode(value, '$$c')) + "}",
-    null, true
-  );
-}
-
-function genRadioModel (
-  el,
-  value,
-  modifiers
-) {
-  var number = modifiers && modifiers.number;
-  var valueBinding = getBindingAttr(el, 'value') || 'null';
-  valueBinding = number ? ("_n(" + valueBinding + ")") : valueBinding;
-  addProp(el, 'checked', ("_q(" + value + "," + valueBinding + ")"));
-  addHandler(el, 'change', genAssignmentCode(value, valueBinding), null, true);
-}
-
-function genSelect (
-  el,
-  value,
-  modifiers
-) {
-  var number = modifiers && modifiers.number;
-  var selectedVal = "Array.prototype.filter" +
-    ".call($event.target.options,function(o){return o.selected})" +
-    ".map(function(o){var val = \"_value\" in o ? o._value : o.value;" +
-    "return " + (number ? '_n(val)' : 'val') + "})";
-
-  var assignment = '$event.target.multiple ? $$selectedVal : $$selectedVal[0]';
-  var code = "var $$selectedVal = " + selectedVal + ";";
-  code = code + " " + (genAssignmentCode(value, assignment));
-  addHandler(el, 'change', code, null, true);
-}
-
-function genDefaultModel (
-  el,
-  value,
-  modifiers
-) {
-  var type = el.attrsMap.type;
-
-  // warn if v-bind:value conflicts with v-model
-  // except for inputs with v-bind:type
-  if (process.env.NODE_ENV !== 'production') {
-    var value$1 = el.attrsMap['v-bind:value'] || el.attrsMap[':value'];
-    var typeBinding = el.attrsMap['v-bind:type'] || el.attrsMap[':type'];
-    if (value$1 && !typeBinding) {
-      var binding = el.attrsMap['v-bind:value'] ? 'v-bind:value' : ':value';
-      warn$1(
-        binding + "=\"" + value$1 + "\" conflicts with v-model on the same element " +
-        'because the latter already expands to a value binding internally'
-      );
-    }
-  }
-
-  var ref = modifiers || {};
-  var lazy = ref.lazy;
-  var number = ref.number;
-  var trim = ref.trim;
-  var needCompositionGuard = !lazy && type !== 'range';
-  var event = lazy
-    ? 'change'
-    : type === 'range'
-      ? RANGE_TOKEN
-      : 'input';
-
-  var valueExpression = '$event.target.value';
-  if (trim) {
-    valueExpression = "$event.target.value.trim()";
-  }
-  if (number) {
-    valueExpression = "_n(" + valueExpression + ")";
-  }
-
-  var code = genAssignmentCode(value, valueExpression);
-  if (needCompositionGuard) {
-    code = "if($event.target.composing)return;" + code;
-  }
-
-  addProp(el, 'value', ("(" + value + ")"));
-  addHandler(el, event, code, null, true);
-  if (trim || number) {
-    addHandler(el, 'blur', '$forceUpdate()');
-  }
-}
-
-/*  */
-
-// normalize v-model event tokens that can only be determined at runtime.
-// it's important to place the event as the first in the array because
-// the whole point is ensuring the v-model callback gets called before
-// user-attached handlers.
-function normalizeEvents (on) {
-  /* istanbul ignore if */
-  if (isDef(on[RANGE_TOKEN])) {
-    // IE input[type=range] only supports `change` event
-    var event = isIE ? 'change' : 'input';
-    on[event] = [].concat(on[RANGE_TOKEN], on[event] || []);
-    delete on[RANGE_TOKEN];
-  }
-  // This was originally intended to fix #4521 but no longer necessary
-  // after 2.5. Keeping it for backwards compat with generated code from < 2.4
-  /* istanbul ignore if */
-  if (isDef(on[CHECKBOX_RADIO_TOKEN])) {
-    on.change = [].concat(on[CHECKBOX_RADIO_TOKEN], on.change || []);
-    delete on[CHECKBOX_RADIO_TOKEN];
-  }
-}
-
-var target$1;
-
-function createOnceHandler$1 (event, handler, capture) {
-  var _target = target$1; // save current target element in closure
-  return function onceHandler () {
-    var res = handler.apply(null, arguments);
-    if (res !== null) {
-      remove$2(event, onceHandler, capture, _target);
-    }
-  }
-}
-
-function add$1 (
-  event,
-  handler,
-  capture,
-  passive
-) {
-  handler = withMacroTask(handler);
-  target$1.addEventListener(
-    event,
-    handler,
-    supportsPassive
-      ? { capture: capture, passive: passive }
-      : capture
-  );
-}
-
-function remove$2 (
-  event,
-  handler,
-  capture,
-  _target
-) {
-  (_target || target$1).removeEventListener(
-    event,
-    handler._withTask || handler,
-    capture
-  );
-}
-
-function updateDOMListeners (oldVnode, vnode) {
-  if (isUndef(oldVnode.data.on) && isUndef(vnode.data.on)) {
-    return
-  }
-  var on = vnode.data.on || {};
-  var oldOn = oldVnode.data.on || {};
-  target$1 = vnode.elm;
-  normalizeEvents(on);
-  updateListeners(on, oldOn, add$1, remove$2, createOnceHandler$1, vnode.context);
-  target$1 = undefined;
-}
-
-var events = {
-  create: updateDOMListeners,
-  update: updateDOMListeners
-};
-
-/*  */
-
-function updateDOMProps (oldVnode, vnode) {
-  if (isUndef(oldVnode.data.domProps) && isUndef(vnode.data.domProps)) {
-    return
-  }
-  var key, cur;
-  var elm = vnode.elm;
-  var oldProps = oldVnode.data.domProps || {};
-  var props = vnode.data.domProps || {};
-  // clone observed objects, as the user probably wants to mutate it
-  if (isDef(props.__ob__)) {
-    props = vnode.data.domProps = extend({}, props);
-  }
-
-  for (key in oldProps) {
-    if (isUndef(props[key])) {
-      elm[key] = '';
-    }
-  }
-  for (key in props) {
-    cur = props[key];
-    // ignore children if the node has textContent or innerHTML,
-    // as these will throw away existing DOM nodes and cause removal errors
-    // on subsequent patches (#3360)
-    if (key === 'textContent' || key === 'innerHTML') {
-      if (vnode.children) { vnode.children.length = 0; }
-      if (cur === oldProps[key]) { continue }
-      // #6601 work around Chrome version <= 55 bug where single textNode
-      // replaced by innerHTML/textContent retains its parentNode property
-      if (elm.childNodes.length === 1) {
-        elm.removeChild(elm.childNodes[0]);
-      }
-    }
-
-    if (key === 'value') {
-      // store value as _value as well since
-      // non-string values will be stringified
-      elm._value = cur;
-      // avoid resetting cursor position when value is the same
-      var strCur = isUndef(cur) ? '' : String(cur);
-      if (shouldUpdateValue(elm, strCur)) {
-        elm.value = strCur;
-      }
-    } else {
-      elm[key] = cur;
-    }
-  }
-}
-
-// check platforms/web/util/attrs.js acceptValue
-
-
-function shouldUpdateValue (elm, checkVal) {
-  return (!elm.composing && (
-    elm.tagName === 'OPTION' ||
-    isNotInFocusAndDirty(elm, checkVal) ||
-    isDirtyWithModifiers(elm, checkVal)
-  ))
-}
-
-function isNotInFocusAndDirty (elm, checkVal) {
-  // return true when textbox (.number and .trim) loses focus and its value is
-  // not equal to the updated value
-  var notInFocus = true;
-  // #6157
-  // work around IE bug when accessing document.activeElement in an iframe
-  try { notInFocus = document.activeElement !== elm; } catch (e) {}
-  return notInFocus && elm.value !== checkVal
-}
-
-function isDirtyWithModifiers (elm, newVal) {
-  var value = elm.value;
-  var modifiers = elm._vModifiers; // injected by v-model runtime
-  if (isDef(modifiers)) {
-    if (modifiers.lazy) {
-      // inputs with lazy should only be updated when not in focus
-      return false
-    }
-    if (modifiers.number) {
-      return toNumber(value) !== toNumber(newVal)
-    }
-    if (modifiers.trim) {
-      return value.trim() !== newVal.trim()
-    }
-  }
-  return value !== newVal
-}
-
-var domProps = {
-  create: updateDOMProps,
-  update: updateDOMProps
-};
-
-/*  */
-
-var parseStyleText = cached(function (cssText) {
-  var res = {};
-  var listDelimiter = /;(?![^(]*\))/g;
-  var propertyDelimiter = /:(.+)/;
-  cssText.split(listDelimiter).forEach(function (item) {
-    if (item) {
-      var tmp = item.split(propertyDelimiter);
-      tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim());
-    }
-  });
-  return res
-});
-
-// merge static and dynamic style data on the same vnode
-function normalizeStyleData (data) {
-  var style = normalizeStyleBinding(data.style);
-  // static style is pre-processed into an object during compilation
-  // and is always a fresh object, so it's safe to merge into it
-  return data.staticStyle
-    ? extend(data.staticStyle, style)
-    : style
-}
-
-// normalize possible array / string values into Object
-function normalizeStyleBinding (bindingStyle) {
-  if (Array.isArray(bindingStyle)) {
-    return toObject(bindingStyle)
-  }
-  if (typeof bindingStyle === 'string') {
-    return parseStyleText(bindingStyle)
-  }
-  return bindingStyle
-}
-
-/**
- * parent component style should be after child's
- * so that parent component's style could override it
- */
-function getStyle (vnode, checkChild) {
-  var res = {};
-  var styleData;
-
-  if (checkChild) {
-    var childNode = vnode;
-    while (childNode.componentInstance) {
-      childNode = childNode.componentInstance._vnode;
-      if (
-        childNode && childNode.data &&
-        (styleData = normalizeStyleData(childNode.data))
-      ) {
-        extend(res, styleData);
-      }
-    }
-  }
-
-  if ((styleData = normalizeStyleData(vnode.data))) {
-    extend(res, styleData);
-  }
-
-  var parentNode = vnode;
-  while ((parentNode = parentNode.parent)) {
-    if (parentNode.data && (styleData = normalizeStyleData(parentNode.data))) {
-      extend(res, styleData);
-    }
-  }
-  return res
-}
-
-/*  */
-
-var cssVarRE = /^--/;
-var importantRE = /\s*!important$/;
-var setProp = function (el, name, val) {
-  /* istanbul ignore if */
-  if (cssVarRE.test(name)) {
-    el.style.setProperty(name, val);
-  } else if (importantRE.test(val)) {
-    el.style.setProperty(name, val.replace(importantRE, ''), 'important');
-  } else {
-    var normalizedName = normalize(name);
-    if (Array.isArray(val)) {
-      // Support values array created by autoprefixer, e.g.
-      // {display: ["-webkit-box", "-ms-flexbox", "flex"]}
-      // Set them one by one, and the browser will only set those it can recognize
-      for (var i = 0, len = val.length; i < len; i++) {
-        el.style[normalizedName] = val[i];
-      }
-    } else {
-      el.style[normalizedName] = val;
-    }
-  }
-};
-
-var vendorNames = ['Webkit', 'Moz', 'ms'];
-
-var emptyStyle;
-var normalize = cached(function (prop) {
-  emptyStyle = emptyStyle || document.createElement('div').style;
-  prop = camelize(prop);
-  if (prop !== 'filter' && (prop in emptyStyle)) {
-    return prop
-  }
-  var capName = prop.charAt(0).toUpperCase() + prop.slice(1);
-  for (var i = 0; i < vendorNames.length; i++) {
-    var name = vendorNames[i] + capName;
-    if (name in emptyStyle) {
-      return name
-    }
-  }
-});
-
-function updateStyle (oldVnode, vnode) {
-  var data = vnode.data;
-  var oldData = oldVnode.data;
-
-  if (isUndef(data.staticStyle) && isUndef(data.style) &&
-    isUndef(oldData.staticStyle) && isUndef(oldData.style)
-  ) {
-    return
-  }
-
-  var cur, name;
-  var el = vnode.elm;
-  var oldStaticStyle = oldData.staticStyle;
-  var oldStyleBinding = oldData.normalizedStyle || oldData.style || {};
-
-  // if static style exists, stylebinding already merged into it when doing normalizeStyleData
-  var oldStyle = oldStaticStyle || oldStyleBinding;
-
-  var style = normalizeStyleBinding(vnode.data.style) || {};
-
-  // store normalized style under a different key for next diff
-  // make sure to clone it if it's reactive, since the user likely wants
-  // to mutate it.
-  vnode.data.normalizedStyle = isDef(style.__ob__)
-    ? extend({}, style)
-    : style;
-
-  var newStyle = getStyle(vnode, true);
-
-  for (name in oldStyle) {
-    if (isUndef(newStyle[name])) {
-      setProp(el, name, '');
-    }
-  }
-  for (name in newStyle) {
-    cur = newStyle[name];
-    if (cur !== oldStyle[name]) {
-      // ie9 setting to null has no effect, must use empty string
-      setProp(el, name, cur == null ? '' : cur);
-    }
-  }
-}
-
-var style = {
-  create: updateStyle,
-  update: updateStyle
-};
-
-/*  */
-
-var whitespaceRE = /\s+/;
-
-/**
- * Add class with compatibility for SVG since classList is not supported on
- * SVG elements in IE
- */
-function addClass (el, cls) {
-  /* istanbul ignore if */
-  if (!cls || !(cls = cls.trim())) {
-    return
-  }
-
-  /* istanbul ignore else */
-  if (el.classList) {
-    if (cls.indexOf(' ') > -1) {
-      cls.split(whitespaceRE).forEach(function (c) { return el.classList.add(c); });
-    } else {
-      el.classList.add(cls);
-    }
-  } else {
-    var cur = " " + (el.getAttribute('class') || '') + " ";
-    if (cur.indexOf(' ' + cls + ' ') < 0) {
-      el.setAttribute('class', (cur + cls).trim());
-    }
-  }
-}
-
-/**
- * Remove class with compatibility for SVG since classList is not supported on
- * SVG elements in IE
- */
-function removeClass (el, cls) {
-  /* istanbul ignore if */
-  if (!cls || !(cls = cls.trim())) {
-    return
-  }
-
-  /* istanbul ignore else */
-  if (el.classList) {
-    if (cls.indexOf(' ') > -1) {
-      cls.split(whitespaceRE).forEach(function (c) { return el.classList.remove(c); });
-    } else {
-      el.classList.remove(cls);
-    }
-    if (!el.classList.length) {
-      el.removeAttribute('class');
-    }
-  } else {
-    var cur = " " + (el.getAttribute('class') || '') + " ";
-    var tar = ' ' + cls + ' ';
-    while (cur.indexOf(tar) >= 0) {
-      cur = cur.replace(tar, ' ');
-    }
-    cur = cur.trim();
-    if (cur) {
-      el.setAttribute('class', cur);
-    } else {
-      el.removeAttribute('class');
-    }
-  }
-}
-
-/*  */
-
-function resolveTransition (def$$1) {
-  if (!def$$1) {
-    return
-  }
-  /* istanbul ignore else */
-  if (typeof def$$1 === 'object') {
-    var res = {};
-    if (def$$1.css !== false) {
-      extend(res, autoCssTransition(def$$1.name || 'v'));
-    }
-    extend(res, def$$1);
-    return res
-  } else if (typeof def$$1 === 'string') {
-    return autoCssTransition(def$$1)
-  }
-}
-
-var autoCssTransition = cached(function (name) {
-  return {
-    enterClass: (name + "-enter"),
-    enterToClass: (name + "-enter-to"),
-    enterActiveClass: (name + "-enter-active"),
-    leaveClass: (name + "-leave"),
-    leaveToClass: (name + "-leave-to"),
-    leaveActiveClass: (name + "-leave-active")
-  }
-});
-
-var hasTransition = inBrowser && !isIE9;
-var TRANSITION = 'transition';
-var ANIMATION = 'animation';
-
-// Transition property/event sniffing
-var transitionProp = 'transition';
-var transitionEndEvent = 'transitionend';
-var animationProp = 'animation';
-var animationEndEvent = 'animationend';
-if (hasTransition) {
-  /* istanbul ignore if */
-  if (window.ontransitionend === undefined &&
-    window.onwebkittransitionend !== undefined
-  ) {
-    transitionProp = 'WebkitTransition';
-    transitionEndEvent = 'webkitTransitionEnd';
-  }
-  if (window.onanimationend === undefined &&
-    window.onwebkitanimationend !== undefined
-  ) {
-    animationProp = 'WebkitAnimation';
-    animationEndEvent = 'webkitAnimationEnd';
-  }
-}
-
-// binding to window is necessary to make hot reload work in IE in strict mode
-var raf = inBrowser
-  ? window.requestAnimationFrame
-    ? window.requestAnimationFrame.bind(window)
-    : setTimeout
-  : /* istanbul ignore next */ function (fn) { return fn(); };
-
-function nextFrame (fn) {
-  raf(function () {
-    raf(fn);
-  });
-}
-
-function addTransitionClass (el, cls) {
-  var transitionClasses = el._transitionClasses || (el._transitionClasses = []);
-  if (transitionClasses.indexOf(cls) < 0) {
-    transitionClasses.push(cls);
-    addClass(el, cls);
-  }
-}
-
-function removeTransitionClass (el, cls) {
-  if (el._transitionClasses) {
-    remove(el._transitionClasses, cls);
-  }
-  removeClass(el, cls);
-}
-
-function whenTransitionEnds (
-  el,
-  expectedType,
-  cb
-) {
-  var ref = getTransitionInfo(el, expectedType);
-  var type = ref.type;
-  var timeout = ref.timeout;
-  var propCount = ref.propCount;
-  if (!type) { return cb() }
-  var event = type === TRANSITION ? transitionEndEvent : animationEndEvent;
-  var ended = 0;
-  var end = function () {
-    el.removeEventListener(event, onEnd);
-    cb();
-  };
-  var onEnd = function (e) {
-    if (e.target === el) {
-      if (++ended >= propCount) {
-        end();
-      }
-    }
-  };
-  setTimeout(function () {
-    if (ended < propCount) {
-      end();
-    }
-  }, timeout + 1);
-  el.addEventListener(event, onEnd);
-}
-
-var transformRE = /\b(transform|all)(,|$)/;
-
-function getTransitionInfo (el, expectedType) {
-  var styles = window.getComputedStyle(el);
-  // JSDOM may return undefined for transition properties
-  var transitionDelays = (styles[transitionProp + 'Delay'] || '').split(', ');
-  var transitionDurations = (styles[transitionProp + 'Duration'] || '').split(', ');
-  var transitionTimeout = getTimeout(transitionDelays, transitionDurations);
-  var animationDelays = (styles[animationProp + 'Delay'] || '').split(', ');
-  var animationDurations = (styles[animationProp + 'Duration'] || '').split(', ');
-  var animationTimeout = getTimeout(animationDelays, animationDurations);
-
-  var type;
-  var timeout = 0;
-  var propCount = 0;
-  /* istanbul ignore if */
-  if (expectedType === TRANSITION) {
-    if (transitionTimeout > 0) {
-      type = TRANSITION;
-      timeout = transitionTimeout;
-      propCount = transitionDurations.length;
-    }
-  } else if (expectedType === ANIMATION) {
-    if (animationTimeout > 0) {
-      type = ANIMATION;
-      timeout = animationTimeout;
-      propCount = animationDurations.length;
-    }
-  } else {
-    timeout = Math.max(transitionTimeout, animationTimeout);
-    type = timeout > 0
-      ? transitionTimeout > animationTimeout
-        ? TRANSITION
-        : ANIMATION
-      : null;
-    propCount = type
-      ? type === TRANSITION
-        ? transitionDurations.length
-        : animationDurations.length
-      : 0;
-  }
-  var hasTransform =
-    type === TRANSITION &&
-    transformRE.test(styles[transitionProp + 'Property']);
-  return {
-    type: type,
-    timeout: timeout,
-    propCount: propCount,
-    hasTransform: hasTransform
-  }
-}
-
-function getTimeout (delays, durations) {
-  /* istanbul ignore next */
-  while (delays.length < durations.length) {
-    delays = delays.concat(delays);
-  }
-
-  return Math.max.apply(null, durations.map(function (d, i) {
-    return toMs(d) + toMs(delays[i])
-  }))
-}
-
-// Old versions of Chromium (below 61.0.3163.100) formats floating pointer numbers
-// in a locale-dependent way, using a comma instead of a dot.
-// If comma is not replaced with a dot, the input will be rounded down (i.e. acting
-// as a floor function) causing unexpected behaviors
-function toMs (s) {
-  return Number(s.slice(0, -1).replace(',', '.')) * 1000
-}
-
-/*  */
-
-function enter (vnode, toggleDisplay) {
-  var el = vnode.elm;
-
-  // call leave callback now
-  if (isDef(el._leaveCb)) {
-    el._leaveCb.cancelled = true;
-    el._leaveCb();
-  }
-
-  var data = resolveTransition(vnode.data.transition);
-  if (isUndef(data)) {
-    return
-  }
-
-  /* istanbul ignore if */
-  if (isDef(el._enterCb) || el.nodeType !== 1) {
-    return
-  }
-
-  var css = data.css;
-  var type = data.type;
-  var enterClass = data.enterClass;
-  var enterToClass = data.enterToClass;
-  var enterActiveClass = data.enterActiveClass;
-  var appearClass = data.appearClass;
-  var appearToClass = data.appearToClass;
-  var appearActiveClass = data.appearActiveClass;
-  var beforeEnter = data.beforeEnter;
-  var enter = data.enter;
-  var afterEnter = data.afterEnter;
-  var enterCancelled = data.enterCancelled;
-  var beforeAppear = data.beforeAppear;
-  var appear = data.appear;
-  var afterAppear = data.afterAppear;
-  var appearCancelled = data.appearCancelled;
-  var duration = data.duration;
-
-  // activeInstance will always be the <transition> component managing this
-  // transition. One edge case to check is when the <transition> is placed
-  // as the root node of a child component. In that case we need to check
-  // <transition>'s parent for appear check.
-  var context = activeInstance;
-  var transitionNode = activeInstance.$vnode;
-  while (transitionNode && transitionNode.parent) {
-    transitionNode = transitionNode.parent;
-    context = transitionNode.context;
-  }
-
-  var isAppear = !context._isMounted || !vnode.isRootInsert;
-
-  if (isAppear && !appear && appear !== '') {
-    return
-  }
-
-  var startClass = isAppear && appearClass
-    ? appearClass
-    : enterClass;
-  var activeClass = isAppear && appearActiveClass
-    ? appearActiveClass
-    : enterActiveClass;
-  var toClass = isAppear && appearToClass
-    ? appearToClass
-    : enterToClass;
-
-  var beforeEnterHook = isAppear
-    ? (beforeAppear || beforeEnter)
-    : beforeEnter;
-  var enterHook = isAppear
-    ? (typeof appear === 'function' ? appear : enter)
-    : enter;
-  var afterEnterHook = isAppear
-    ? (afterAppear || afterEnter)
-    : afterEnter;
-  var enterCancelledHook = isAppear
-    ? (appearCancelled || enterCancelled)
-    : enterCancelled;
-
-  var explicitEnterDuration = toNumber(
-    isObject(duration)
-      ? duration.enter
-      : duration
-  );
-
-  if (process.env.NODE_ENV !== 'production' && explicitEnterDuration != null) {
-    checkDuration(explicitEnterDuration, 'enter', vnode);
-  }
-
-  var expectsCSS = css !== false && !isIE9;
-  var userWantsControl = getHookArgumentsLength(enterHook);
-
-  var cb = el._enterCb = once(function () {
-    if (expectsCSS) {
-      removeTransitionClass(el, toClass);
-      removeTransitionClass(el, activeClass);
-    }
-    if (cb.cancelled) {
-      if (expectsCSS) {
-        removeTransitionClass(el, startClass);
-      }
-      enterCancelledHook && enterCancelledHook(el);
-    } else {
-      afterEnterHook && afterEnterHook(el);
-    }
-    el._enterCb = null;
-  });
-
-  if (!vnode.data.show) {
-    // remove pending leave element on enter by injecting an insert hook
-    mergeVNodeHook(vnode, 'insert', function () {
-      var parent = el.parentNode;
-      var pendingNode = parent && parent._pending && parent._pending[vnode.key];
-      if (pendingNode &&
-        pendingNode.tag === vnode.tag &&
-        pendingNode.elm._leaveCb
-      ) {
-        pendingNode.elm._leaveCb();
-      }
-      enterHook && enterHook(el, cb);
-    });
-  }
-
-  // start enter transition
-  beforeEnterHook && beforeEnterHook(el);
-  if (expectsCSS) {
-    addTransitionClass(el, startClass);
-    addTransitionClass(el, activeClass);
-    nextFrame(function () {
-      removeTransitionClass(el, startClass);
-      if (!cb.cancelled) {
-        addTransitionClass(el, toClass);
-        if (!userWantsControl) {
-          if (isValidDuration(explicitEnterDuration)) {
-            setTimeout(cb, explicitEnterDuration);
-          } else {
-            whenTransitionEnds(el, type, cb);
-          }
-        }
-      }
-    });
-  }
-
-  if (vnode.data.show) {
-    toggleDisplay && toggleDisplay();
-    enterHook && enterHook(el, cb);
-  }
-
-  if (!expectsCSS && !userWantsControl) {
-    cb();
-  }
-}
-
-function leave (vnode, rm) {
-  var el = vnode.elm;
-
-  // call enter callback now
-  if (isDef(el._enterCb)) {
-    el._enterCb.cancelled = true;
-    el._enterCb();
-  }
-
-  var data = resolveTransition(vnode.data.transition);
-  if (isUndef(data) || el.nodeType !== 1) {
-    return rm()
-  }
-
-  /* istanbul ignore if */
-  if (isDef(el._leaveCb)) {
-    return
-  }
-
-  var css = data.css;
-  var type = data.type;
-  var leaveClass = data.leaveClass;
-  var leaveToClass = data.leaveToClass;
-  var leaveActiveClass = data.leaveActiveClass;
-  var beforeLeave = data.beforeLeave;
-  var leave = data.leave;
-  var afterLeave = data.afterLeave;
-  var leaveCancelled = data.leaveCancelled;
-  var delayLeave = data.delayLeave;
-  var duration = data.duration;
-
-  var expectsCSS = css !== false && !isIE9;
-  var userWantsControl = getHookArgumentsLength(leave);
-
-  var explicitLeaveDuration = toNumber(
-    isObject(duration)
-      ? duration.leave
-      : duration
-  );
-
-  if (process.env.NODE_ENV !== 'production' && isDef(explicitLeaveDuration)) {
-    checkDuration(explicitLeaveDuration, 'leave', vnode);
-  }
-
-  var cb = el._leaveCb = once(function () {
-    if (el.parentNode && el.parentNode._pending) {
-      el.parentNode._pending[vnode.key] = null;
-    }
-    if (expectsCSS) {
-      removeTransitionClass(el, leaveToClass);
-      removeTransitionClass(el, leaveActiveClass);
-    }
-    if (cb.cancelled) {
-      if (expectsCSS) {
-        removeTransitionClass(el, leaveClass);
-      }
-      leaveCancelled && leaveCancelled(el);
-    } else {
-      rm();
-      afterLeave && afterLeave(el);
-    }
-    el._leaveCb = null;
-  });
-
-  if (delayLeave) {
-    delayLeave(performLeave);
-  } else {
-    performLeave();
-  }
-
-  function performLeave () {
-    // the delayed leave may have already been cancelled
-    if (cb.cancelled) {
-      return
-    }
-    // record leaving element
-    if (!vnode.data.show && el.parentNode) {
-      (el.parentNode._pending || (el.parentNode._pending = {}))[(vnode.key)] = vnode;
-    }
-    beforeLeave && beforeLeave(el);
-    if (expectsCSS) {
-      addTransitionClass(el, leaveClass);
-      addTransitionClass(el, leaveActiveClass);
-      nextFrame(function () {
-        removeTransitionClass(el, leaveClass);
-        if (!cb.cancelled) {
-          addTransitionClass(el, leaveToClass);
-          if (!userWantsControl) {
-            if (isValidDuration(explicitLeaveDuration)) {
-              setTimeout(cb, explicitLeaveDuration);
-            } else {
-              whenTransitionEnds(el, type, cb);
-            }
-          }
-        }
-      });
-    }
-    leave && leave(el, cb);
-    if (!expectsCSS && !userWantsControl) {
-      cb();
-    }
-  }
-}
-
-// only used in dev mode
-function checkDuration (val, name, vnode) {
-  if (typeof val !== 'number') {
-    warn(
-      "<transition> explicit " + name + " duration is not a valid number - " +
-      "got " + (JSON.stringify(val)) + ".",
-      vnode.context
-    );
-  } else if (isNaN(val)) {
-    warn(
-      "<transition> explicit " + name + " duration is NaN - " +
-      'the duration expression might be incorrect.',
-      vnode.context
-    );
-  }
-}
-
-function isValidDuration (val) {
-  return typeof val === 'number' && !isNaN(val)
-}
-
-/**
- * Normalize a transition hook's argument length. The hook may be:
- * - a merged hook (invoker) with the original in .fns
- * - a wrapped component method (check ._length)
- * - a plain function (.length)
- */
-function getHookArgumentsLength (fn) {
-  if (isUndef(fn)) {
-    return false
-  }
-  var invokerFns = fn.fns;
-  if (isDef(invokerFns)) {
-    // invoker
-    return getHookArgumentsLength(
-      Array.isArray(invokerFns)
-        ? invokerFns[0]
-        : invokerFns
-    )
-  } else {
-    return (fn._length || fn.length) > 1
-  }
-}
-
-function _enter (_, vnode) {
-  if (vnode.data.show !== true) {
-    enter(vnode);
-  }
-}
-
-var transition = inBrowser ? {
-  create: _enter,
-  activate: _enter,
-  remove: function remove$$1 (vnode, rm) {
-    /* istanbul ignore else */
-    if (vnode.data.show !== true) {
-      leave(vnode, rm);
-    } else {
-      rm();
-    }
-  }
-} : {};
-
-var platformModules = [
-  attrs,
-  klass,
-  events,
-  domProps,
-  style,
-  transition
-];
-
-/*  */
-
-// the directive module should be applied last, after all
-// built-in modules have been applied.
-var modules = platformModules.concat(baseModules);
-
-var patch = createPatchFunction({ nodeOps: nodeOps, modules: modules });
-
-/**
- * Not type checking this file because flow doesn't like attaching
- * properties to Elements.
- */
-
-/* istanbul ignore if */
-if (isIE9) {
-  // http://www.matts411.com/post/internet-explorer-9-oninput/
-  document.addEventListener('selectionchange', function () {
-    var el = document.activeElement;
-    if (el && el.vmodel) {
-      trigger(el, 'input');
-    }
-  });
-}
-
-var directive = {
-  inserted: function inserted (el, binding, vnode, oldVnode) {
-    if (vnode.tag === 'select') {
-      // #6903
-      if (oldVnode.elm && !oldVnode.elm._vOptions) {
-        mergeVNodeHook(vnode, 'postpatch', function () {
-          directive.componentUpdated(el, binding, vnode);
-        });
-      } else {
-        setSelected(el, binding, vnode.context);
-      }
-      el._vOptions = [].map.call(el.options, getValue);
-    } else if (vnode.tag === 'textarea' || isTextInputType(el.type)) {
-      el._vModifiers = binding.modifiers;
-      if (!binding.modifiers.lazy) {
-        el.addEventListener('compositionstart', onCompositionStart);
-        el.addEventListener('compositionend', onCompositionEnd);
-        // Safari < 10.2 & UIWebView doesn't fire compositionend when
-        // switching focus before confirming composition choice
-        // this also fixes the issue where some browsers e.g. iOS Chrome
-        // fires "change" instead of "input" on autocomplete.
-        el.addEventListener('change', onCompositionEnd);
-        /* istanbul ignore if */
-        if (isIE9) {
-          el.vmodel = true;
-        }
-      }
-    }
-  },
-
-  componentUpdated: function componentUpdated (el, binding, vnode) {
-    if (vnode.tag === 'select') {
-      setSelected(el, binding, vnode.context);
-      // in case the options rendered by v-for have changed,
-      // it's possible that the value is out-of-sync with the rendered options.
-      // detect such cases and filter out values that no longer has a matching
-      // option in the DOM.
-      var prevOptions = el._vOptions;
-      var curOptions = el._vOptions = [].map.call(el.options, getValue);
-      if (curOptions.some(function (o, i) { return !looseEqual(o, prevOptions[i]); })) {
-        // trigger change event if
-        // no matching option found for at least one value
-        var needReset = el.multiple
-          ? binding.value.some(function (v) { return hasNoMatchingOption(v, curOptions); })
-          : binding.value !== binding.oldValue && hasNoMatchingOption(binding.value, curOptions);
-        if (needReset) {
-          trigger(el, 'change');
-        }
-      }
-    }
-  }
-};
-
-function setSelected (el, binding, vm) {
-  actuallySetSelected(el, binding, vm);
-  /* istanbul ignore if */
-  if (isIE || isEdge) {
-    setTimeout(function () {
-      actuallySetSelected(el, binding, vm);
-    }, 0);
-  }
-}
-
-function actuallySetSelected (el, binding, vm) {
-  var value = binding.value;
-  var isMultiple = el.multiple;
-  if (isMultiple && !Array.isArray(value)) {
-    process.env.NODE_ENV !== '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) {
-  return options.every(function (o) { return !looseEqual(o, value); })
-}
-
-function getValue (option) {
-  return '_value' in option
-    ? option._value
-    : option.value
-}
-
-function onCompositionStart (e) {
-  e.target.composing = true;
-}
-
-function onCompositionEnd (e) {
-  // prevent triggering an input event for no reason
-  if (!e.target.composing) { return }
-  e.target.composing = false;
-  trigger(e.target, 'input');
-}
-
-function trigger (el, type) {
-  var e = document.createEvent('HTMLEvents');
-  e.initEvent(type, true, true);
-  el.dispatchEvent(e);
-}
-
-/*  */
-
-// recursively search for possible transition defined inside the component root
-function locateNode (vnode) {
-  return vnode.componentInstance && (!vnode.data || !vnode.data.transition)
-    ? locateNode(vnode.componentInstance._vnode)
-    : vnode
-}
-
-var show = {
-  bind: function bind (el, ref, vnode) {
-    var value = ref.value;
-
-    vnode = locateNode(vnode);
-    var transition$$1 = vnode.data && vnode.data.transition;
-    var originalDisplay = el.__vOriginalDisplay =
-      el.style.display === 'none' ? '' : el.style.display;
-    if (value && transition$$1) {
-      vnode.data.show = true;
-      enter(vnode, function () {
-        el.style.display = originalDisplay;
-      });
-    } else {
-      el.style.display = value ? originalDisplay : 'none';
-    }
-  },
-
-  update: function update (el, ref, vnode) {
-    var value = ref.value;
-    var oldValue = ref.oldValue;
-
-    /* istanbul ignore if */
-    if (!value === !oldValue) { return }
-    vnode = locateNode(vnode);
-    var transition$$1 = vnode.data && vnode.data.transition;
-    if (transition$$1) {
-      vnode.data.show = true;
-      if (value) {
-        enter(vnode, function () {
-          el.style.display = el.__vOriginalDisplay;
-        });
-      } else {
-        leave(vnode, function () {
-          el.style.display = 'none';
-        });
-      }
-    } else {
-      el.style.display = value ? el.__vOriginalDisplay : 'none';
-    }
-  },
-
-  unbind: function unbind (
-    el,
-    binding,
-    vnode,
-    oldVnode,
-    isDestroy
-  ) {
-    if (!isDestroy) {
-      el.style.display = el.__vOriginalDisplay;
-    }
-  }
-};
-
-var platformDirectives = {
-  model: directive,
-  show: show
-};
-
-/*  */
-
-var transitionProps = {
-  name: String,
-  appear: Boolean,
-  css: Boolean,
-  mode: String,
-  type: String,
-  enterClass: String,
-  leaveClass: String,
-  enterToClass: String,
-  leaveToClass: String,
-  enterActiveClass: String,
-  leaveActiveClass: String,
-  appearClass: String,
-  appearActiveClass: String,
-  appearToClass: String,
-  duration: [Number, String, Object]
-};
-
-// in case the child is also an abstract component, e.g. <keep-alive>
-// we want to recursively retrieve the real component to be rendered
-function getRealChild (vnode) {
-  var compOptions = vnode && vnode.componentOptions;
-  if (compOptions && compOptions.Ctor.options.abstract) {
-    return getRealChild(getFirstComponentChild(compOptions.children))
-  } else {
-    return vnode
-  }
-}
-
-function extractTransitionData (comp) {
-  var data = {};
-  var options = comp.$options;
-  // props
-  for (var key in options.propsData) {
-    data[key] = comp[key];
-  }
-  // events.
-  // extract listeners and pass them directly to the transition methods
-  var listeners = options._parentListeners;
-  for (var key$1 in listeners) {
-    data[camelize(key$1)] = listeners[key$1];
-  }
-  return data
-}
-
-function placeholder (h, rawChild) {
-  if (/\d-keep-alive$/.test(rawChild.tag)) {
-    return h('keep-alive', {
-      props: rawChild.componentOptions.propsData
-    })
-  }
-}
-
-function hasParentTransition (vnode) {
-  while ((vnode = vnode.parent)) {
-    if (vnode.data.transition) {
-      return true
-    }
-  }
-}
-
-function isSameChild (child, oldChild) {
-  return oldChild.key === child.key && oldChild.tag === child.tag
-}
-
-var isNotTextNode = function (c) { return c.tag || isAsyncPlaceholder(c); };
-
-var isVShowDirective = function (d) { return d.name === 'show'; };
-
-var Transition = {
-  name: 'transition',
-  props: transitionProps,
-  abstract: true,
-
-  render: function render (h) {
-    var this$1 = this;
-
-    var children = this.$slots.default;
-    if (!children) {
-      return
-    }
-
-    // filter out text nodes (possible whitespaces)
-    children = children.filter(isNotTextNode);
-    /* istanbul ignore if */
-    if (!children.length) {
-      return
-    }
-
-    // warn multiple elements
-    if (process.env.NODE_ENV !== 'production' && children.length > 1) {
-      warn(
-        '<transition> can only be used on a single element. Use ' +
-        '<transition-group> for lists.',
-        this.$parent
-      );
-    }
-
-    var mode = this.mode;
-
-    // warn invalid mode
-    if (process.env.NODE_ENV !== 'production' &&
-      mode && mode !== 'in-out' && mode !== 'out-in'
-    ) {
-      warn(
-        'invalid <transition> mode: ' + mode,
-        this.$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) + "-";
-    child.key = child.key == null
-      ? child.isComment
-        ? id + 'comment'
-        : id + child.tag
-      : isPrimitive(child.key)
-        ? (String(child.key).indexOf(id) === 0 ? child.key : id + child.key)
-        : child.key;
-
-    var data = (child.data || (child.data = {})).transition = extractTransitionData(this);
-    var oldRawChild = this._vnode;
-    var oldChild = getRealChild(oldRawChild);
-
-    // mark v-show
-    // so that the transition module can hand over the control to the directive
-    if (child.data.directives && child.data.directives.some(isVShowDirective)) {
-      child.data.show = true;
-    }
-
-    if (
-      oldChild &&
-      oldChild.data &&
-      !isSameChild(child, oldChild) &&
-      !isAsyncPlaceholder(oldChild) &&
-      // #6687 component root is a comment node
-      !(oldChild.componentInstance && oldChild.componentInstance._vnode.isComment)
-    ) {
-      // replace old child transition data with fresh one
-      // important for dynamic transitions!
-      var oldData = oldChild.data.transition = extend({}, data);
-      // handle transition mode
-      if (mode === 'out-in') {
-        // return placeholder node and queue update when leave finishes
-        this._leaving = true;
-        mergeVNodeHook(oldData, 'afterLeave', function () {
-          this$1._leaving = false;
-          this$1.$forceUpdate();
-        });
-        return placeholder(h, rawChild)
-      } else if (mode === 'in-out') {
-        if (isAsyncPlaceholder(child)) {
-          return oldRawChild
-        }
-        var delayedLeave;
-        var performLeave = function () { delayedLeave(); };
-        mergeVNodeHook(data, 'afterEnter', performLeave);
-        mergeVNodeHook(data, 'enterCancelled', performLeave);
-        mergeVNodeHook(oldData, 'delayLeave', function (leave) { delayedLeave = leave; });
-      }
-    }
-
-    return rawChild
-  }
-};
-
-/*  */
-
-var props = extend({
-  tag: String,
-  moveClass: String
-}, transitionProps);
-
-delete props.mode;
-
-var TransitionGroup = {
-  props: props,
-
-  beforeMount: function beforeMount () {
-    var this$1 = this;
-
-    var update = this._update;
-    this._update = function (vnode, hydrating) {
-      var restoreActiveInstance = setActiveInstance(this$1);
-      // force removing pass
-      this$1.__patch__(
-        this$1._vnode,
-        this$1.kept,
-        false, // hydrating
-        true // removeOnly (!important, avoids unnecessary moves)
-      );
-      this$1._vnode = this$1.kept;
-      restoreActiveInstance();
-      update.call(this$1, vnode, hydrating);
-    };
-  },
-
-  render: function render (h) {
-    var tag = this.tag || this.$vnode.data.tag || 'span';
-    var map = Object.create(null);
-    var prevChildren = this.prevChildren = this.children;
-    var rawChildren = this.$slots.default || [];
-    var children = this.children = [];
-    var transitionData = extractTransitionData(this);
-
-    for (var i = 0; i < rawChildren.length; i++) {
-      var c = rawChildren[i];
-      if (c.tag) {
-        if (c.key != null && String(c.key).indexOf('__vlist') !== 0) {
-          children.push(c);
-          map[c.key] = c
-          ;(c.data || (c.data = {})).transition = transitionData;
-        } else if (process.env.NODE_ENV !== 'production') {
-          var opts = c.componentOptions;
-          var name = opts ? (opts.Ctor.options.name || opts.tag || '') : c.tag;
-          warn(("<transition-group> children must be keyed: <" + name + ">"));
-        }
-      }
-    }
-
-    if (prevChildren) {
-      var kept = [];
-      var removed = [];
-      for (var i$1 = 0; i$1 < prevChildren.length; i$1++) {
-        var c$1 = prevChildren[i$1];
-        c$1.data.transition = transitionData;
-        c$1.data.pos = c$1.elm.getBoundingClientRect();
-        if (map[c$1.key]) {
-          kept.push(c$1);
-        } else {
-          removed.push(c$1);
-        }
-      }
-      this.kept = h(tag, null, kept);
-      this.removed = removed;
-    }
-
-    return h(tag, null, children)
-  },
-
-  updated: function updated () {
-    var children = this.prevChildren;
-    var moveClass = this.moveClass || ((this.name || 'v') + '-move');
-    if (!children.length || !this.hasMove(children[0].elm, moveClass)) {
-      return
-    }
-
-    // we divide the work into three loops to avoid mixing DOM reads and writes
-    // in each iteration - which helps prevent layout thrashing.
-    children.forEach(callPendingCbs);
-    children.forEach(recordPosition);
-    children.forEach(applyTranslation);
-
-    // force reflow to put everything in position
-    // assign to this to avoid being removed in tree-shaking
-    // $flow-disable-line
-    this._reflow = document.body.offsetHeight;
-
-    children.forEach(function (c) {
-      if (c.data.moved) {
-        var el = c.elm;
-        var s = el.style;
-        addTransitionClass(el, moveClass);
-        s.transform = s.WebkitTransform = s.transitionDuration = '';
-        el.addEventListener(transitionEndEvent, el._moveCb = function cb (e) {
-          if (e && e.target !== el) {
-            return
-          }
-          if (!e || /transform$/.test(e.propertyName)) {
-            el.removeEventListener(transitionEndEvent, cb);
-            el._moveCb = null;
-            removeTransitionClass(el, moveClass);
-          }
-        });
-      }
-    });
-  },
-
-  methods: {
-    hasMove: function hasMove (el, moveClass) {
-      /* istanbul ignore if */
-      if (!hasTransition) {
-        return false
-      }
-      /* istanbul ignore if */
-      if (this._hasMove) {
-        return this._hasMove
-      }
-      // Detect whether an element with the move class applied has
-      // CSS transitions. Since the element may be inside an entering
-      // transition at this very moment, we make a clone of it and remove
-      // all other transition classes applied to ensure only the move class
-      // is applied.
-      var clone = el.cloneNode();
-      if (el._transitionClasses) {
-        el._transitionClasses.forEach(function (cls) { removeClass(clone, cls); });
-      }
-      addClass(clone, moveClass);
-      clone.style.display = 'none';
-      this.$el.appendChild(clone);
-      var info = getTransitionInfo(clone);
-      this.$el.removeChild(clone);
-      return (this._hasMove = info.hasTransform)
-    }
-  }
-};
-
-function callPendingCbs (c) {
-  /* istanbul ignore if */
-  if (c.elm._moveCb) {
-    c.elm._moveCb();
-  }
-  /* istanbul ignore if */
-  if (c.elm._enterCb) {
-    c.elm._enterCb();
-  }
-}
-
-function recordPosition (c) {
-  c.data.newPos = c.elm.getBoundingClientRect();
-}
-
-function applyTranslation (c) {
-  var oldPos = c.data.pos;
-  var newPos = c.data.newPos;
-  var dx = oldPos.left - newPos.left;
-  var dy = oldPos.top - newPos.top;
-  if (dx || dy) {
-    c.data.moved = true;
-    var s = c.elm.style;
-    s.transform = s.WebkitTransform = "translate(" + dx + "px," + dy + "px)";
-    s.transitionDuration = '0s';
-  }
-}
-
-var platformComponents = {
-  Transition: Transition,
-  TransitionGroup: TransitionGroup
-};
-
-/*  */
-
-// install platform specific utils
-Vue.config.mustUseProp = mustUseProp;
-Vue.config.isReservedTag = isReservedTag;
-Vue.config.isReservedAttr = isReservedAttr;
-Vue.config.getTagNamespace = getTagNamespace;
-Vue.config.isUnknownElement = isUnknownElement;
-
-// install platform runtime directives & components
-extend(Vue.options.directives, platformDirectives);
-extend(Vue.options.components, platformComponents);
-
-// install platform patch function
-Vue.prototype.__patch__ = inBrowser ? patch : noop;
-
-// public mount method
-Vue.prototype.$mount = function (
-  el,
-  hydrating
-) {
-  el = el && inBrowser ? query(el) : undefined;
-  return mountComponent(this, el, hydrating)
-};
-
-// devtools global hook
-/* istanbul ignore next */
-if (inBrowser) {
-  setTimeout(function () {
-    if (config.devtools) {
-      if (devtools) {
-        devtools.emit('init', Vue);
-      } else if (
-        process.env.NODE_ENV !== 'production' &&
-        process.env.NODE_ENV !== 'test' &&
-        isChrome
-      ) {
-        console[console.info ? 'info' : 'log'](
-          'Download the Vue Devtools extension for a better development experience:\n' +
-          'https://github.com/vuejs/vue-devtools'
-        );
-      }
-    }
-    if (process.env.NODE_ENV !== 'production' &&
-      process.env.NODE_ENV !== 'test' &&
-      config.productionTip !== false &&
-      typeof console !== 'undefined'
-    ) {
-      console[console.info ? 'info' : 'log'](
-        "You are running Vue in development mode.\n" +
-        "Make sure to turn on production mode when deploying for production.\n" +
-        "See more tips at https://vuejs.org/guide/deployment.html"
-      );
-    }
-  }, 0);
-}
-
-/*  */
-
-var defaultTagRE = /\{\{((?:.|\r?\n)+?)\}\}/g;
-var regexEscapeRE = /[-.*+?^${}()|[\]\/\\]/g;
-
-var buildRegex = cached(function (delimiters) {
-  var open = delimiters[0].replace(regexEscapeRE, '\\$&');
-  var close = delimiters[1].replace(regexEscapeRE, '\\$&');
-  return new RegExp(open + '((?:.|\\n)+?)' + close, 'g')
-});
-
-
-
-function parseText (
-  text,
-  delimiters
-) {
-  var tagRE = delimiters ? buildRegex(delimiters) : defaultTagRE;
-  if (!tagRE.test(text)) {
-    return
-  }
-  var tokens = [];
-  var rawTokens = [];
-  var lastIndex = tagRE.lastIndex = 0;
-  var match, index, tokenValue;
-  while ((match = tagRE.exec(text))) {
-    index = match.index;
-    // push text token
-    if (index > lastIndex) {
-      rawTokens.push(tokenValue = text.slice(lastIndex, index));
-      tokens.push(JSON.stringify(tokenValue));
-    }
-    // tag token
-    var exp = parseFilters(match[1].trim());
-    tokens.push(("_s(" + exp + ")"));
-    rawTokens.push({ '@binding': exp });
-    lastIndex = index + match[0].length;
-  }
-  if (lastIndex < text.length) {
-    rawTokens.push(tokenValue = text.slice(lastIndex));
-    tokens.push(JSON.stringify(tokenValue));
-  }
-  return {
-    expression: tokens.join('+'),
-    tokens: rawTokens
-  }
-}
-
-/*  */
-
-function transformNode (el, options) {
-  var warn = options.warn || baseWarn;
-  var staticClass = getAndRemoveAttr(el, 'class');
-  if (process.env.NODE_ENV !== 'production' && staticClass) {
-    var res = parseText(staticClass, options.delimiters);
-    if (res) {
-      warn(
-        "class=\"" + staticClass + "\": " +
-        'Interpolation inside attributes has been removed. ' +
-        'Use v-bind or the colon shorthand instead. For example, ' +
-        'instead of <div class="{{ val }}">, use <div :class="val">.'
-      );
-    }
-  }
-  if (staticClass) {
-    el.staticClass = JSON.stringify(staticClass);
-  }
-  var classBinding = getBindingAttr(el, 'class', false /* getStatic */);
-  if (classBinding) {
-    el.classBinding = classBinding;
-  }
-}
-
-function genData (el) {
-  var data = '';
-  if (el.staticClass) {
-    data += "staticClass:" + (el.staticClass) + ",";
-  }
-  if (el.classBinding) {
-    data += "class:" + (el.classBinding) + ",";
-  }
-  return data
-}
-
-var klass$1 = {
-  staticKeys: ['staticClass'],
-  transformNode: transformNode,
-  genData: genData
-};
-
-/*  */
-
-function transformNode$1 (el, options) {
-  var warn = options.warn || baseWarn;
-  var staticStyle = getAndRemoveAttr(el, 'style');
-  if (staticStyle) {
-    /* istanbul ignore if */
-    if (process.env.NODE_ENV !== 'production') {
-      var res = parseText(staticStyle, options.delimiters);
-      if (res) {
-        warn(
-          "style=\"" + staticStyle + "\": " +
-          'Interpolation inside attributes has been removed. ' +
-          'Use v-bind or the colon shorthand instead. For example, ' +
-          'instead of <div style="{{ val }}">, use <div :style="val">.'
-        );
-      }
-    }
-    el.staticStyle = JSON.stringify(parseStyleText(staticStyle));
-  }
-
-  var styleBinding = getBindingAttr(el, 'style', false /* getStatic */);
-  if (styleBinding) {
-    el.styleBinding = styleBinding;
-  }
-}
-
-function genData$1 (el) {
-  var data = '';
-  if (el.staticStyle) {
-    data += "staticStyle:" + (el.staticStyle) + ",";
-  }
-  if (el.styleBinding) {
-    data += "style:(" + (el.styleBinding) + "),";
-  }
-  return data
-}
-
-var style$1 = {
-  staticKeys: ['staticStyle'],
-  transformNode: transformNode$1,
-  genData: genData$1
-};
-
-/*  */
-
-var decoder;
-
-var he = {
-  decode: function decode (html) {
-    decoder = decoder || document.createElement('div');
-    decoder.innerHTML = html;
-    return decoder.textContent
-  }
-};
-
-/*  */
-
-var isUnaryTag = makeMap(
-  'area,base,br,col,embed,frame,hr,img,input,isindex,keygen,' +
-  'link,meta,param,source,track,wbr'
-);
-
-// Elements that you can, intentionally, leave open
-// (and which close themselves)
-var canBeLeftOpenTag = makeMap(
-  'colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr,source'
-);
-
-// HTML5 tags https://html.spec.whatwg.org/multipage/indices.html#elements-3
-// Phrasing Content https://html.spec.whatwg.org/multipage/dom.html#phrasing-content
-var isNonPhrasingTag = makeMap(
-  'address,article,aside,base,blockquote,body,caption,col,colgroup,dd,' +
-  'details,dialog,div,dl,dt,fieldset,figcaption,figure,footer,form,' +
-  'h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,legend,li,menuitem,meta,' +
-  'optgroup,option,param,rp,rt,source,style,summary,tbody,td,tfoot,th,thead,' +
-  'title,tr,track'
-);
-
-/**
- * Not type-checking this file because it's mostly vendor code.
- */
-
-// Regular Expressions for parsing tags and attributes
-var attribute = /^\s*([^\s"'<>\/=]+)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/;
-// 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;
-// #7298: escape - to avoid being pased as HTML comment when inlined in page
-var comment = /^<!\--/;
-var conditionalComment = /^<!\[/;
-
-// Special Elements (can contain anything)
-var isPlainTextElement = makeMap('script,style,textarea', true);
-var reCache = {};
-
-var decodingMap = {
-  '&lt;': '<',
-  '&gt;': '>',
-  '&quot;': '"',
-  '&amp;': '&',
-  '&#10;': '\n',
-  '&#9;': '\t'
-};
-var encodedAttr = /&(?:lt|gt|quot|amp);/g;
-var encodedAttrWithNewLines = /&(?:lt|gt|quot|amp|#10|#9);/g;
-
-// #5992
-var isIgnoreNewlineTag = makeMap('pre,textarea', true);
-var shouldIgnoreFirstNewline = function (tag, html) { return tag && isIgnoreNewlineTag(tag) && html[0] === '\n'; };
-
-function decodeAttr (value, shouldDecodeNewlines) {
-  var re = shouldDecodeNewlines ? encodedAttrWithNewLines : encodedAttr;
-  return value.replace(re, function (match) { return decodingMap[match]; })
-}
-
-function parseHTML (html, options) {
-  var stack = [];
-  var expectHTML = options.expectHTML;
-  var isUnaryTag$$1 = options.isUnaryTag || no;
-  var canBeLeftOpenTag$$1 = options.canBeLeftOpenTag || no;
-  var index = 0;
-  var last, lastTag;
-  while (html) {
-    last = html;
-    // Make sure we're not in a plaintext content element like script/style
-    if (!lastTag || !isPlainTextElement(lastTag)) {
-      var textEnd = html.indexOf('<');
-      if (textEnd === 0) {
-        // Comment:
-        if (comment.test(html)) {
-          var commentEnd = html.indexOf('-->');
-
-          if (commentEnd >= 0) {
-            if (options.shouldKeepComment) {
-              options.comment(html.substring(4, commentEnd));
-            }
-            advance(commentEnd + 3);
-            continue
-          }
-        }
-
-        // http://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment
-        if (conditionalComment.test(html)) {
-          var conditionalEnd = html.indexOf(']>');
-
-          if (conditionalEnd >= 0) {
-            advance(conditionalEnd + 2);
-            continue
-          }
-        }
-
-        // Doctype:
-        var doctypeMatch = html.match(doctype);
-        if (doctypeMatch) {
-          advance(doctypeMatch[0].length);
-          continue
-        }
-
-        // End tag:
-        var endTagMatch = html.match(endTag);
-        if (endTagMatch) {
-          var curIndex = index;
-          advance(endTagMatch[0].length);
-          parseEndTag(endTagMatch[1], curIndex, index);
-          continue
-        }
-
-        // Start tag:
-        var startTagMatch = parseStartTag();
-        if (startTagMatch) {
-          handleStartTag(startTagMatch);
-          if (shouldIgnoreFirstNewline(startTagMatch.tagName, html)) {
-            advance(1);
-          }
-          continue
-        }
-      }
-
-      var text = (void 0), rest = (void 0), next = (void 0);
-      if (textEnd >= 0) {
-        rest = html.slice(textEnd);
-        while (
-          !endTag.test(rest) &&
-          !startTagOpen.test(rest) &&
-          !comment.test(rest) &&
-          !conditionalComment.test(rest)
-        ) {
-          // < in plain text, be forgiving and treat it as text
-          next = rest.indexOf('<', 1);
-          if (next < 0) { break }
-          textEnd += next;
-          rest = html.slice(textEnd);
-        }
-        text = html.substring(0, textEnd);
-        advance(textEnd);
-      }
-
-      if (textEnd < 0) {
-        text = html;
-        html = '';
-      }
-
-      if (options.chars && text) {
-        options.chars(text);
-      }
-    } else {
-      var endTagLength = 0;
-      var stackedTag = lastTag.toLowerCase();
-      var reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)(</' + stackedTag + '[^>]*>)', 'i'));
-      var rest$1 = html.replace(reStackedTag, function (all, text, endTag) {
-        endTagLength = endTag.length;
-        if (!isPlainTextElement(stackedTag) && stackedTag !== 'noscript') {
-          text = text
-            .replace(/<!\--([\s\S]*?)-->/g, '$1') // #7298
-            .replace(/<!\[CDATA\[([\s\S]*?)]]>/g, '$1');
-        }
-        if (shouldIgnoreFirstNewline(stackedTag, text)) {
-          text = text.slice(1);
-        }
-        if (options.chars) {
-          options.chars(text);
-        }
-        return ''
-      });
-      index += html.length - rest$1.length;
-      html = rest$1;
-      parseEndTag(stackedTag, index - endTagLength, index);
-    }
-
-    if (html === last) {
-      options.chars && options.chars(html);
-      if (process.env.NODE_ENV !== 'production' && !stack.length && options.warn) {
-        options.warn(("Mal-formatted tag at end of template: \"" + 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$$1(tagName) && lastTag === tagName) {
-        parseEndTag(tagName);
-      }
-    }
-
-    var unary = isUnaryTag$$1(tagName) || !!unarySlash;
-
-    var l = match.attrs.length;
-    var attrs = new Array(l);
-    for (var i = 0; i < l; i++) {
-      var args = match.attrs[i];
-      var value = args[3] || args[4] || args[5] || '';
-      var shouldDecodeNewlines = tagName === 'a' && args[1] === 'href'
-        ? options.shouldDecodeNewlinesForHref
-        : options.shouldDecodeNewlines;
-      attrs[i] = {
-        name: args[1],
-        value: decodeAttr(value, shouldDecodeNewlines)
-      };
-    }
-
-    if (!unary) {
-      stack.push({ tag: tagName, lowerCasedTag: tagName.toLowerCase(), attrs: attrs });
-      lastTag = tagName;
-    }
-
-    if (options.start) {
-      options.start(tagName, attrs, unary, match.start, match.end);
-    }
-  }
-
-  function parseEndTag (tagName, start, end) {
-    var pos, lowerCasedTagName;
-    if (start == null) { start = index; }
-    if (end == null) { end = index; }
-
-    // Find the closest opened tag of the same type
-    if (tagName) {
-      lowerCasedTagName = tagName.toLowerCase();
-      for (pos = stack.length - 1; pos >= 0; pos--) {
-        if (stack[pos].lowerCasedTag === lowerCasedTagName) {
-          break
-        }
-      }
-    } else {
-      // If no tag name is provided, clean shop
-      pos = 0;
-    }
-
-    if (pos >= 0) {
-      // Close all the open elements, up the stack
-      for (var i = stack.length - 1; i >= pos; i--) {
-        if (process.env.NODE_ENV !== 'production' &&
-          (i > pos || !tagName) &&
-          options.warn
-        ) {
-          options.warn(
-            ("tag <" + (stack[i].tag) + "> has no matching end tag.")
-          );
-        }
-        if (options.end) {
-          options.end(stack[i].tag, start, end);
-        }
-      }
-
-      // Remove the open elements from the stack
-      stack.length = pos;
-      lastTag = pos && stack[pos - 1].tag;
-    } else if (lowerCasedTagName === 'br') {
-      if (options.start) {
-        options.start(tagName, [], true, start, end);
-      }
-    } else if (lowerCasedTagName === 'p') {
-      if (options.start) {
-        options.start(tagName, [], false, start, end);
-      }
-      if (options.end) {
-        options.end(tagName, start, end);
-      }
-    }
-  }
-}
-
-/*  */
-
-var onRE = /^@|^v-on:/;
-var dirRE = /^v-|^@|^:/;
-var forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/;
-var forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/;
-var stripParensRE = /^\(|\)$/g;
-
-var argRE = /:(.*)$/;
-var bindRE = /^:|^v-bind:/;
-var modifierRE = /\.[^.]+/g;
-
-var decodeHTMLCached = cached(he.decode);
-
-// configurable state
-var warn$2;
-var delimiters;
-var transforms;
-var preTransforms;
-var postTransforms;
-var platformIsPreTag;
-var platformMustUseProp;
-var platformGetTagNamespace;
-
-
-
-function createASTElement (
-  tag,
-  attrs,
-  parent
-) {
-  return {
-    type: 1,
-    tag: tag,
-    attrsList: attrs,
-    attrsMap: makeAttrsMap(attrs),
-    parent: parent,
-    children: []
-  }
-}
-
-/**
- * Convert HTML string to AST.
- */
-function parse (
-  template,
-  options
-) {
-  warn$2 = options.warn || baseWarn;
-
-  platformIsPreTag = options.isPreTag || no;
-  platformMustUseProp = options.mustUseProp || no;
-  platformGetTagNamespace = options.getTagNamespace || no;
-
-  transforms = pluckModuleFunction(options.modules, 'transformNode');
-  preTransforms = pluckModuleFunction(options.modules, 'preTransformNode');
-  postTransforms = pluckModuleFunction(options.modules, 'postTransformNode');
-
-  delimiters = options.delimiters;
-
-  var stack = [];
-  var preserveWhitespace = options.preserveWhitespace !== false;
-  var root;
-  var currentParent;
-  var inVPre = false;
-  var inPre = false;
-  var warned = false;
-
-  function warnOnce (msg) {
-    if (!warned) {
-      warned = true;
-      warn$2(msg);
-    }
-  }
-
-  function closeElement (element) {
-    // check pre state
-    if (element.pre) {
-      inVPre = false;
-    }
-    if (platformIsPreTag(element.tag)) {
-      inPre = false;
-    }
-    // apply post-transforms
-    for (var i = 0; i < postTransforms.length; i++) {
-      postTransforms[i](element, options);
-    }
-  }
-
-  parseHTML(template, {
-    warn: warn$2,
-    expectHTML: options.expectHTML,
-    isUnaryTag: options.isUnaryTag,
-    canBeLeftOpenTag: options.canBeLeftOpenTag,
-    shouldDecodeNewlines: options.shouldDecodeNewlines,
-    shouldDecodeNewlinesForHref: options.shouldDecodeNewlinesForHref,
-    shouldKeepComment: options.comments,
-    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 = createASTElement(tag, attrs, currentParent);
-      if (ns) {
-        element.ns = ns;
-      }
-
-      if (isForbiddenTag(element) && !isServerRendering()) {
-        element.forbidden = true;
-        process.env.NODE_ENV !== 'production' && warn$2(
-          'Templates should only be responsible for mapping the state to the ' +
-          'UI. Avoid placing tags with side-effects in your templates, such as ' +
-          "<" + tag + ">" + ', as they will not be parsed.'
-        );
-      }
-
-      // apply pre-transforms
-      for (var i = 0; i < preTransforms.length; i++) {
-        element = preTransforms[i](element, options) || element;
-      }
-
-      if (!inVPre) {
-        processPre(element);
-        if (element.pre) {
-          inVPre = true;
-        }
-      }
-      if (platformIsPreTag(element.tag)) {
-        inPre = true;
-      }
-      if (inVPre) {
-        processRawAttrs(element);
-      } else if (!element.processed) {
-        // structural directives
-        processFor(element);
-        processIf(element);
-        processOnce(element);
-        // element-scope stuff
-        processElement(element, options);
-      }
-
-      function checkRootConstraints (el) {
-        if (process.env.NODE_ENV !== 'production') {
-          if (el.tag === 'slot' || el.tag === 'template') {
-            warnOnce(
-              "Cannot use <" + (el.tag) + "> as component root element because it may " +
-              'contain multiple nodes.'
-            );
-          }
-          if (el.attrsMap.hasOwnProperty('v-for')) {
-            warnOnce(
-              'Cannot use v-for on stateful component root element because ' +
-              'it renders multiple elements.'
-            );
-          }
-        }
-      }
-
-      // 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 (process.env.NODE_ENV !== 'production') {
-          warnOnce(
-            "Component template should contain exactly one root element. " +
-            "If you are using v-if on multiple elements, " +
-            "use v-else-if to chain them instead."
-          );
-        }
-      }
-      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);
-      } else {
-        closeElement(element);
-      }
-    },
-
-    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 === ' ' && !inPre) {
-        element.children.pop();
-      }
-      // pop stack
-      stack.length -= 1;
-      currentParent = stack[stack.length - 1];
-      closeElement(element);
-    },
-
-    chars: function chars (text) {
-      if (!currentParent) {
-        if (process.env.NODE_ENV !== 'production') {
-          if (text === template) {
-            warnOnce(
-              'Component template requires a root element, rather than just text.'
-            );
-          } else if ((text = text.trim())) {
-            warnOnce(
-              ("text \"" + text + "\" outside root element will be ignored.")
-            );
-          }
-        }
-        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()
-        ? isTextTag(currentParent) ? text : decodeHTMLCached(text)
-        // only preserve whitespace if its not right after a starting tag
-        : preserveWhitespace && children.length ? ' ' : '';
-      if (text) {
-        var res;
-        if (!inVPre && text !== ' ' && (res = parseText(text, delimiters))) {
-          children.push({
-            type: 2,
-            expression: res.expression,
-            tokens: res.tokens,
-            text: text
-          });
-        } else if (text !== ' ' || !children.length || children[children.length - 1].text !== ' ') {
-          children.push({
-            type: 3,
-            text: text
-          });
-        }
-      }
-    },
-    comment: function comment (text) {
-      currentParent.children.push({
-        type: 3,
-        text: text,
-        isComment: true
-      });
-    }
-  });
-  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 processElement (element, options) {
-  processKey(element);
-
-  // determine whether this is a plain element after
-  // removing structural attributes
-  element.plain = !element.key && !element.attrsList.length;
-
-  processRef(element);
-  processSlot(element);
-  processComponent(element);
-  for (var i = 0; i < transforms.length; i++) {
-    element = transforms[i](element, options) || element;
-  }
-  processAttrs(element);
-}
-
-function processKey (el) {
-  var exp = getBindingAttr(el, 'key');
-  if (exp) {
-    if (process.env.NODE_ENV !== 'production') {
-      if (el.tag === 'template') {
-        warn$2("<template> cannot be keyed. Place the key on real elements instead.");
-      }
-      if (el.for) {
-        var iterator = el.iterator2 || el.iterator1;
-        var parent = el.parent;
-        if (iterator && iterator === exp && parent && parent.tag === 'transition-group') {
-          warn$2(
-            "Do not use v-for index as key on <transition-group> children, " +
-            "this is the same as not using keys."
-          );
-        }
-      }
-    }
-    el.key = exp;
-  }
-}
-
-function processRef (el) {
-  var ref = getBindingAttr(el, 'ref');
-  if (ref) {
-    el.ref = ref;
-    el.refInFor = checkInFor(el);
-  }
-}
-
-function processFor (el) {
-  var exp;
-  if ((exp = getAndRemoveAttr(el, 'v-for'))) {
-    var res = parseFor(exp);
-    if (res) {
-      extend(el, res);
-    } else if (process.env.NODE_ENV !== 'production') {
-      warn$2(
-        ("Invalid v-for expression: " + exp)
-      );
-    }
-  }
-}
-
-
-
-function parseFor (exp) {
-  var inMatch = exp.match(forAliasRE);
-  if (!inMatch) { return }
-  var res = {};
-  res.for = inMatch[2].trim();
-  var alias = inMatch[1].trim().replace(stripParensRE, '');
-  var iteratorMatch = alias.match(forIteratorRE);
-  if (iteratorMatch) {
-    res.alias = alias.replace(forIteratorRE, '').trim();
-    res.iterator1 = iteratorMatch[1].trim();
-    if (iteratorMatch[2]) {
-      res.iterator2 = iteratorMatch[2].trim();
-    }
-  } else {
-    res.alias = alias;
-  }
-  return res
-}
-
-function processIf (el) {
-  var exp = getAndRemoveAttr(el, 'v-if');
-  if (exp) {
-    el.if = exp;
-    addIfCondition(el, {
-      exp: exp,
-      block: el
-    });
-  } else {
-    if (getAndRemoveAttr(el, 'v-else') != null) {
-      el.else = true;
-    }
-    var elseif = getAndRemoveAttr(el, 'v-else-if');
-    if (elseif) {
-      el.elseif = elseif;
-    }
-  }
-}
-
-function processIfConditions (el, parent) {
-  var prev = findPrevElement(parent.children);
-  if (prev && prev.if) {
-    addIfCondition(prev, {
-      exp: el.elseif,
-      block: el
-    });
-  } else if (process.env.NODE_ENV !== 'production') {
-    warn$2(
-      "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 (process.env.NODE_ENV !== 'production' && children[i].text !== ' ') {
-        warn$2(
-          "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$$1 = getAndRemoveAttr(el, 'v-once');
-  if (once$$1 != null) {
-    el.once = true;
-  }
-}
-
-function processSlot (el) {
-  if (el.tag === 'slot') {
-    el.slotName = getBindingAttr(el, 'name');
-    if (process.env.NODE_ENV !== 'production' && el.key) {
-      warn$2(
-        "`key` does not work on <slot> because slots are abstract outlets " +
-        "and can possibly expand into multiple elements. " +
-        "Use the key on a wrapping element instead."
-      );
-    }
-  } else {
-    var slotScope;
-    if (el.tag === 'template') {
-      slotScope = getAndRemoveAttr(el, 'scope');
-      /* istanbul ignore if */
-      if (process.env.NODE_ENV !== 'production' && slotScope) {
-        warn$2(
-          "the \"scope\" attribute for scoped slots have been deprecated and " +
-          "replaced by \"slot-scope\" since 2.5. The new \"slot-scope\" attribute " +
-          "can also be used on plain elements in addition to <template> to " +
-          "denote scoped slots.",
-          true
-        );
-      }
-      el.slotScope = slotScope || getAndRemoveAttr(el, 'slot-scope');
-    } else if ((slotScope = getAndRemoveAttr(el, 'slot-scope'))) {
-      /* istanbul ignore if */
-      if (process.env.NODE_ENV !== 'production' && el.attrsMap['v-for']) {
-        warn$2(
-          "Ambiguous combined usage of slot-scope and v-for on <" + (el.tag) + "> " +
-          "(v-for takes higher priority). Use a wrapper <template> for the " +
-          "scoped slot to make it clearer.",
-          true
-        );
-      }
-      el.slotScope = slotScope;
-    }
-    var slotTarget = getBindingAttr(el, 'slot');
-    if (slotTarget) {
-      el.slotTarget = slotTarget === '""' ? '"default"' : slotTarget;
-      // preserve slot as an attribute for native shadow DOM compat
-      // only for non-scoped slots.
-      if (el.tag !== 'template' && !el.slotScope) {
-        addAttr(el, 'slot', slotTarget);
-      }
-    }
-  }
-}
-
-function processComponent (el) {
-  var binding;
-  if ((binding = getBindingAttr(el, 'is'))) {
-    el.component = binding;
-  }
-  if (getAndRemoveAttr(el, 'inline-template') != null) {
-    el.inlineTemplate = true;
-  }
-}
-
-function processAttrs (el) {
-  var list = el.attrsList;
-  var i, l, name, rawName, value, modifiers, 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 (
-          process.env.NODE_ENV !== 'production' &&
-          value.trim().length === 0
-        ) {
-          warn$2(
-            ("The value for a v-bind expression cannot be empty. Found in \"v-bind:" + name + "\"")
-          );
-        }
-        if (modifiers) {
-          if (modifiers.prop) {
-            isProp = true;
-            name = camelize(name);
-            if (name === 'innerHtml') { name = 'innerHTML'; }
-          }
-          if (modifiers.camel) {
-            name = camelize(name);
-          }
-          if (modifiers.sync) {
-            addHandler(
-              el,
-              ("update:" + (camelize(name))),
-              genAssignmentCode(value, "$event")
-            );
-          }
-        }
-        if (isProp || (
-          !el.component && 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, false, warn$2);
-      } else { // normal directives
-        name = name.replace(dirRE, '');
-        // parse arg
-        var argMatch = name.match(argRE);
-        var arg = argMatch && argMatch[1];
-        if (arg) {
-          name = name.slice(0, -(arg.length + 1));
-        }
-        addDirective(el, name, rawName, value, arg, modifiers);
-        if (process.env.NODE_ENV !== 'production' && name === 'model') {
-          checkForAliasModel(el, value);
-        }
-      }
-    } else {
-      // literal attribute
-      if (process.env.NODE_ENV !== 'production') {
-        var res = parseText(value, delimiters);
-        if (res) {
-          warn$2(
-            name + "=\"" + value + "\": " +
-            'Interpolation inside attributes has been removed. ' +
-            'Use v-bind or the colon shorthand instead. For example, ' +
-            'instead of <div id="{{ val }}">, use <div :id="val">.'
-          );
-        }
-      }
-      addAttr(el, name, JSON.stringify(value));
-      // #6887 firefox doesn't update muted state if set via attribute
-      // even immediately after element creation
-      if (!el.component &&
-          name === 'muted' &&
-          platformMustUseProp(el.tag, el.attrsMap.type, name)) {
-        addProp(el, name, 'true');
-      }
-    }
-  }
-}
-
-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 (
-      process.env.NODE_ENV !== 'production' &&
-      map[attrs[i].name] && !isIE && !isEdge
-    ) {
-      warn$2('duplicate attribute: ' + attrs[i].name);
-    }
-    map[attrs[i].name] = attrs[i].value;
-  }
-  return map
-}
-
-// for script (e.g. type="x/template") or style, do not decode content
-function isTextTag (el) {
-  return el.tag === 'script' || el.tag === 'style'
-}
-
-function isForbiddenTag (el) {
-  return (
-    el.tag === 'style' ||
-    (el.tag === 'script' && (
-      !el.attrsMap.type ||
-      el.attrsMap.type === 'text/javascript'
-    ))
-  )
-}
-
-var ieNSBug = /^xmlns:NS\d+/;
-var ieNSPrefix = /^NS\d+:/;
-
-/* istanbul ignore next */
-function guardIESVGBug (attrs) {
-  var res = [];
-  for (var i = 0; i < attrs.length; i++) {
-    var attr = attrs[i];
-    if (!ieNSBug.test(attr.name)) {
-      attr.name = attr.name.replace(ieNSPrefix, '');
-      res.push(attr);
-    }
-  }
-  return res
-}
-
-function checkForAliasModel (el, value) {
-  var _el = el;
-  while (_el) {
-    if (_el.for && _el.alias === value) {
-      warn$2(
-        "<" + (el.tag) + " v-model=\"" + value + "\">: " +
-        "You are binding v-model directly to a v-for iteration alias. " +
-        "This will not be able to modify the v-for source array because " +
-        "writing to the alias is like modifying a function local variable. " +
-        "Consider using an array of objects and use v-model on an object property instead."
-      );
-    }
-    _el = _el.parent;
-  }
-}
-
-/*  */
-
-function preTransformNode (el, options) {
-  if (el.tag === 'input') {
-    var map = el.attrsMap;
-    if (!map['v-model']) {
-      return
-    }
-
-    var typeBinding;
-    if (map[':type'] || map['v-bind:type']) {
-      typeBinding = getBindingAttr(el, 'type');
-    }
-    if (!map.type && !typeBinding && map['v-bind']) {
-      typeBinding = "(" + (map['v-bind']) + ").type";
-    }
-
-    if (typeBinding) {
-      var ifCondition = getAndRemoveAttr(el, 'v-if', true);
-      var ifConditionExtra = ifCondition ? ("&&(" + ifCondition + ")") : "";
-      var hasElse = getAndRemoveAttr(el, 'v-else', true) != null;
-      var elseIfCondition = getAndRemoveAttr(el, 'v-else-if', true);
-      // 1. checkbox
-      var branch0 = cloneASTElement(el);
-      // process for on the main node
-      processFor(branch0);
-      addRawAttr(branch0, 'type', 'checkbox');
-      processElement(branch0, options);
-      branch0.processed = true; // prevent it from double-processed
-      branch0.if = "(" + typeBinding + ")==='checkbox'" + ifConditionExtra;
-      addIfCondition(branch0, {
-        exp: branch0.if,
-        block: branch0
-      });
-      // 2. add radio else-if condition
-      var branch1 = cloneASTElement(el);
-      getAndRemoveAttr(branch1, 'v-for', true);
-      addRawAttr(branch1, 'type', 'radio');
-      processElement(branch1, options);
-      addIfCondition(branch0, {
-        exp: "(" + typeBinding + ")==='radio'" + ifConditionExtra,
-        block: branch1
-      });
-      // 3. other
-      var branch2 = cloneASTElement(el);
-      getAndRemoveAttr(branch2, 'v-for', true);
-      addRawAttr(branch2, ':type', typeBinding);
-      processElement(branch2, options);
-      addIfCondition(branch0, {
-        exp: ifCondition,
-        block: branch2
-      });
-
-      if (hasElse) {
-        branch0.else = true;
-      } else if (elseIfCondition) {
-        branch0.elseif = elseIfCondition;
-      }
-
-      return branch0
-    }
-  }
-}
-
-function cloneASTElement (el) {
-  return createASTElement(el.tag, el.attrsList.slice(), el.parent)
-}
-
-var model$1 = {
-  preTransformNode: preTransformNode
-};
-
-var modules$1 = [
-  klass$1,
-  style$1,
-  model$1
-];
-
-/*  */
-
-function text (el, dir) {
-  if (dir.value) {
-    addProp(el, 'textContent', ("_s(" + (dir.value) + ")"));
-  }
-}
-
-/*  */
-
-function html (el, dir) {
-  if (dir.value) {
-    addProp(el, 'innerHTML', ("_s(" + (dir.value) + ")"));
-  }
-}
-
-var directives$1 = {
-  model: model,
-  text: text,
-  html: html
-};
-
-/*  */
-
-var baseOptions = {
-  expectHTML: true,
-  modules: modules$1,
-  directives: directives$1,
-  isPreTag: isPreTag,
-  isUnaryTag: isUnaryTag,
-  mustUseProp: mustUseProp,
-  canBeLeftOpenTag: canBeLeftOpenTag,
-  isReservedTag: isReservedTag,
-  getTagNamespace: getTagNamespace,
-  staticKeys: genStaticKeys(modules$1)
-};
-
-/*  */
-
-var isStaticKey;
-var isPlatformReservedTag;
-
-var genStaticKeysCached = cached(genStaticKeys$1);
-
-/**
- * Goal of the optimizer: walk the generated template AST tree
- * and detect sub-trees that are purely static, i.e. parts of
- * the DOM that never needs to change.
- *
- * Once we detect these sub-trees, we can:
- *
- * 1. Hoist them into constants, so that we no longer need to
- *    create fresh nodes for them on each re-render;
- * 2. Completely skip them in the patching process.
- */
-function optimize (root, options) {
-  if (!root) { return }
-  isStaticKey = genStaticKeysCached(options.staticKeys || '');
-  isPlatformReservedTag = options.isReservedTag || no;
-  // first pass: mark all non-static nodes.
-  markStatic$1(root);
-  // second pass: mark static roots.
-  markStaticRoots(root, false);
-}
-
-function genStaticKeys$1 (keys) {
-  return makeMap(
-    'type,tag,attrsList,attrsMap,plain,parent,children,attrs' +
-    (keys ? ',' + keys : '')
-  )
-}
-
-function markStatic$1 (node) {
-  node.static = isStatic(node);
-  if (node.type === 1) {
-    // do not make component slot content static. this avoids
-    // 1. components not able to mutate slot nodes
-    // 2. static slot content fails for hot-reloading
-    if (
-      !isPlatformReservedTag(node.tag) &&
-      node.tag !== 'slot' &&
-      node.attrsMap['inline-template'] == null
-    ) {
-      return
-    }
-    for (var i = 0, l = node.children.length; i < l; i++) {
-      var child = node.children[i];
-      markStatic$1(child);
-      if (!child.static) {
-        node.static = false;
-      }
-    }
-    if (node.ifConditions) {
-      for (var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
-        var block = node.ifConditions[i$1].block;
-        markStatic$1(block);
-        if (!block.static) {
-          node.static = false;
-        }
-      }
-    }
-  }
-}
-
-function markStaticRoots (node, isInFor) {
-  if (node.type === 1) {
-    if (node.static || node.once) {
-      node.staticInFor = isInFor;
-    }
-    // For a node to qualify as a static root, it should have children that
-    // are not just static text. Otherwise the cost of hoisting out will
-    // outweigh the benefits and it's better off to just always render it fresh.
-    if (node.static && node.children.length && !(
-      node.children.length === 1 &&
-      node.children[0].type === 3
-    )) {
-      node.staticRoot = true;
-      return
-    } else {
-      node.staticRoot = false;
-    }
-    if (node.children) {
-      for (var i = 0, l = node.children.length; i < l; i++) {
-        markStaticRoots(node.children[i], isInFor || !!node.for);
-      }
-    }
-    if (node.ifConditions) {
-      for (var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
-        markStaticRoots(node.ifConditions[i$1].block, isInFor);
-      }
-    }
-  }
-}
-
-function isStatic (node) {
-  if (node.type === 2) { // expression
-    return false
-  }
-  if (node.type === 3) { // text
-    return true
-  }
-  return !!(node.pre || (
-    !node.hasBindings && // no dynamic bindings
-    !node.if && !node.for && // not v-if or v-for or v-else
-    !isBuiltInTag(node.tag) && // not a built-in
-    isPlatformReservedTag(node.tag) && // not a component
-    !isDirectChildOfTemplateFor(node) &&
-    Object.keys(node).every(isStaticKey)
-  ))
-}
-
-function isDirectChildOfTemplateFor (node) {
-  while (node.parent) {
-    node = node.parent;
-    if (node.tag !== 'template') {
-      return false
-    }
-    if (node.for) {
-      return true
-    }
-  }
-  return false
-}
-
-/*  */
-
-var fnExpRE = /^([\w$_]+|\([^)]*?\))\s*=>|^function\s*\(/;
-var simplePathRE = /^[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['[^']*?']|\["[^"]*?"]|\[\d+]|\[[A-Za-z_$][\w$]*])*$/;
-
-// KeyboardEvent.keyCode aliases
-var keyCodes = {
-  esc: 27,
-  tab: 9,
-  enter: 13,
-  space: 32,
-  up: 38,
-  left: 37,
-  right: 39,
-  down: 40,
-  'delete': [8, 46]
-};
-
-// KeyboardEvent.key aliases
-var keyNames = {
-  // #7880: IE11 and Edge use `Esc` for Escape key name.
-  esc: ['Esc', 'Escape'],
-  tab: 'Tab',
-  enter: 'Enter',
-  // #9112: IE11 uses `Spacebar` for Space key name.
-  space: [' ', 'Spacebar'],
-  // #7806: IE11 uses key names without `Arrow` prefix for arrow keys.
-  up: ['Up', 'ArrowUp'],
-  left: ['Left', 'ArrowLeft'],
-  right: ['Right', 'ArrowRight'],
-  down: ['Down', 'ArrowDown'],
-  // #9112: IE11 uses `Del` for Delete key name.
-  'delete': ['Backspace', 'Delete', 'Del']
-};
-
-// #4868: modifiers that prevent the execution of the listener
-// need to explicitly return null so that we can determine whether to remove
-// the listener for .once
-var genGuard = function (condition) { return ("if(" + condition + ")return null;"); };
-
-var modifierCode = {
-  stop: '$event.stopPropagation();',
-  prevent: '$event.preventDefault();',
-  self: genGuard("$event.target !== $event.currentTarget"),
-  ctrl: genGuard("!$event.ctrlKey"),
-  shift: genGuard("!$event.shiftKey"),
-  alt: genGuard("!$event.altKey"),
-  meta: genGuard("!$event.metaKey"),
-  left: genGuard("'button' in $event && $event.button !== 0"),
-  middle: genGuard("'button' in $event && $event.button !== 1"),
-  right: genGuard("'button' in $event && $event.button !== 2")
-};
-
-function genHandlers (
-  events,
-  isNative
-) {
-  var res = isNative ? 'nativeOn:{' : 'on:{';
-  for (var name in events) {
-    res += "\"" + name + "\":" + (genHandler(name, events[name])) + ",";
-  }
-  return res.slice(0, -1) + '}'
-}
-
-function genHandler (
-  name,
-  handler
-) {
-  if (!handler) {
-    return 'function(){}'
-  }
-
-  if (Array.isArray(handler)) {
-    return ("[" + (handler.map(function (handler) { return genHandler(name, handler); }).join(',')) + "]")
-  }
-
-  var isMethodPath = simplePathRE.test(handler.value);
-  var isFunctionExpression = fnExpRE.test(handler.value);
-
-  if (!handler.modifiers) {
-    if (isMethodPath || isFunctionExpression) {
-      return handler.value
-    }
-    return ("function($event){" + (handler.value) + "}") // inline statement
-  } else {
-    var code = '';
-    var genModifierCode = '';
-    var keys = [];
-    for (var key in handler.modifiers) {
-      if (modifierCode[key]) {
-        genModifierCode += modifierCode[key];
-        // left/right
-        if (keyCodes[key]) {
-          keys.push(key);
-        }
-      } else if (key === 'exact') {
-        var modifiers = (handler.modifiers);
-        genModifierCode += genGuard(
-          ['ctrl', 'shift', 'alt', 'meta']
-            .filter(function (keyModifier) { return !modifiers[keyModifier]; })
-            .map(function (keyModifier) { return ("$event." + keyModifier + "Key"); })
-            .join('||')
-        );
-      } else {
-        keys.push(key);
-      }
-    }
-    if (keys.length) {
-      code += genKeyFilter(keys);
-    }
-    // Make sure modifiers like prevent and stop get executed after key filtering
-    if (genModifierCode) {
-      code += genModifierCode;
-    }
-    var handlerCode = isMethodPath
-      ? ("return " + (handler.value) + "($event)")
-      : isFunctionExpression
-        ? ("return (" + (handler.value) + ")($event)")
-        : handler.value;
-    return ("function($event){" + code + handlerCode + "}")
-  }
-}
-
-function genKeyFilter (keys) {
-  return ("if(!('button' in $event)&&" + (keys.map(genFilterCode).join('&&')) + ")return null;")
-}
-
-function genFilterCode (key) {
-  var keyVal = parseInt(key, 10);
-  if (keyVal) {
-    return ("$event.keyCode!==" + keyVal)
-  }
-  var keyCode = keyCodes[key];
-  var keyName = keyNames[key];
-  return (
-    "_k($event.keyCode," +
-    (JSON.stringify(key)) + "," +
-    (JSON.stringify(keyCode)) + "," +
-    "$event.key," +
-    "" + (JSON.stringify(keyName)) +
-    ")"
-  )
-}
-
-/*  */
-
-function on (el, dir) {
-  if (process.env.NODE_ENV !== 'production' && dir.modifiers) {
-    warn("v-on without argument does not support modifiers.");
-  }
-  el.wrapListeners = function (code) { return ("_g(" + code + "," + (dir.value) + ")"); };
-}
-
-/*  */
-
-function bind$1 (el, dir) {
-  el.wrapData = function (code) {
-    return ("_b(" + code + ",'" + (el.tag) + "'," + (dir.value) + "," + (dir.modifiers && dir.modifiers.prop ? 'true' : 'false') + (dir.modifiers && dir.modifiers.sync ? ',true' : '') + ")")
-  };
-}
-
-/*  */
-
-var baseDirectives = {
-  on: on,
-  bind: bind$1,
-  cloak: noop
-};
-
-/*  */
-
-
-
-
-
-var CodegenState = function CodegenState (options) {
-  this.options = options;
-  this.warn = options.warn || baseWarn;
-  this.transforms = pluckModuleFunction(options.modules, 'transformCode');
-  this.dataGenFns = pluckModuleFunction(options.modules, 'genData');
-  this.directives = extend(extend({}, baseDirectives), options.directives);
-  var isReservedTag = options.isReservedTag || no;
-  this.maybeComponent = function (el) { return !(isReservedTag(el.tag) && !el.component); };
-  this.onceId = 0;
-  this.staticRenderFns = [];
-  this.pre = false;
-};
-
-
-
-function generate (
-  ast,
-  options
-) {
-  var state = new CodegenState(options);
-  var code = ast ? genElement(ast, state) : '_c("div")';
-  return {
-    render: ("with(this){return " + code + "}"),
-    staticRenderFns: state.staticRenderFns
-  }
-}
-
-function genElement (el, state) {
-  if (el.parent) {
-    el.pre = el.pre || el.parent.pre;
-  }
-
-  if (el.staticRoot && !el.staticProcessed) {
-    return genStatic(el, state)
-  } else if (el.once && !el.onceProcessed) {
-    return genOnce(el, state)
-  } else if (el.for && !el.forProcessed) {
-    return genFor(el, state)
-  } else if (el.if && !el.ifProcessed) {
-    return genIf(el, state)
-  } else if (el.tag === 'template' && !el.slotTarget && !state.pre) {
-    return genChildren(el, state) || 'void 0'
-  } else if (el.tag === 'slot') {
-    return genSlot(el, state)
-  } else {
-    // component or element
-    var code;
-    if (el.component) {
-      code = genComponent(el.component, el, state);
-    } else {
-      var data;
-      if (!el.plain || (el.pre && state.maybeComponent(el))) {
-        data = genData$2(el, state);
-      }
-
-      var children = el.inlineTemplate ? null : genChildren(el, state, true);
-      code = "_c('" + (el.tag) + "'" + (data ? ("," + data) : '') + (children ? ("," + children) : '') + ")";
-    }
-    // module transforms
-    for (var i = 0; i < state.transforms.length; i++) {
-      code = state.transforms[i](el, code);
-    }
-    return code
-  }
-}
-
-// hoist static sub-trees out
-function genStatic (el, state) {
-  el.staticProcessed = true;
-  // Some elements (templates) need to behave differently inside of a v-pre
-  // node.  All pre nodes are static roots, so we can use this as a location to
-  // wrap a state change and reset it upon exiting the pre node.
-  var originalPreState = state.pre;
-  if (el.pre) {
-    state.pre = el.pre;
-  }
-  state.staticRenderFns.push(("with(this){return " + (genElement(el, state)) + "}"));
-  state.pre = originalPreState;
-  return ("_m(" + (state.staticRenderFns.length - 1) + (el.staticInFor ? ',true' : '') + ")")
-}
-
-// v-once
-function genOnce (el, state) {
-  el.onceProcessed = true;
-  if (el.if && !el.ifProcessed) {
-    return genIf(el, state)
-  } else if (el.staticInFor) {
-    var key = '';
-    var parent = el.parent;
-    while (parent) {
-      if (parent.for) {
-        key = parent.key;
-        break
-      }
-      parent = parent.parent;
-    }
-    if (!key) {
-      process.env.NODE_ENV !== 'production' && state.warn(
-        "v-once can only be used inside v-for that is keyed. "
-      );
-      return genElement(el, state)
-    }
-    return ("_o(" + (genElement(el, state)) + "," + (state.onceId++) + "," + key + ")")
-  } else {
-    return genStatic(el, state)
-  }
-}
-
-function genIf (
-  el,
-  state,
-  altGen,
-  altEmpty
-) {
-  el.ifProcessed = true; // avoid recursion
-  return genIfConditions(el.ifConditions.slice(), state, altGen, altEmpty)
-}
-
-function genIfConditions (
-  conditions,
-  state,
-  altGen,
-  altEmpty
-) {
-  if (!conditions.length) {
-    return altEmpty || '_e()'
-  }
-
-  var condition = conditions.shift();
-  if (condition.exp) {
-    return ("(" + (condition.exp) + ")?" + (genTernaryExp(condition.block)) + ":" + (genIfConditions(conditions, state, altGen, altEmpty)))
-  } else {
-    return ("" + (genTernaryExp(condition.block)))
-  }
-
-  // v-if with v-once should generate code like (a)?_m(0):_m(1)
-  function genTernaryExp (el) {
-    return altGen
-      ? altGen(el, state)
-      : el.once
-        ? genOnce(el, state)
-        : genElement(el, state)
-  }
-}
-
-function genFor (
-  el,
-  state,
-  altGen,
-  altHelper
-) {
-  var exp = el.for;
-  var alias = el.alias;
-  var iterator1 = el.iterator1 ? ("," + (el.iterator1)) : '';
-  var iterator2 = el.iterator2 ? ("," + (el.iterator2)) : '';
-
-  if (process.env.NODE_ENV !== 'production' &&
-    state.maybeComponent(el) &&
-    el.tag !== 'slot' &&
-    el.tag !== 'template' &&
-    !el.key
-  ) {
-    state.warn(
-      "<" + (el.tag) + " v-for=\"" + alias + " in " + exp + "\">: component lists rendered with " +
-      "v-for should have explicit keys. " +
-      "See https://vuejs.org/guide/list.html#key for more info.",
-      true /* tip */
-    );
-  }
-
-  el.forProcessed = true; // avoid recursion
-  return (altHelper || '_l') + "((" + exp + ")," +
-    "function(" + alias + iterator1 + iterator2 + "){" +
-      "return " + ((altGen || genElement)(el, state)) +
-    '})'
-}
-
-function genData$2 (el, state) {
-  var data = '{';
-
-  // directives first.
-  // directives may mutate the el's other properties before they are generated.
-  var dirs = genDirectives(el, state);
-  if (dirs) { data += dirs + ','; }
-
-  // key
-  if (el.key) {
-    data += "key:" + (el.key) + ",";
-  }
-  // ref
-  if (el.ref) {
-    data += "ref:" + (el.ref) + ",";
-  }
-  if (el.refInFor) {
-    data += "refInFor:true,";
-  }
-  // pre
-  if (el.pre) {
-    data += "pre:true,";
-  }
-  // record original tag name for components using "is" attribute
-  if (el.component) {
-    data += "tag:\"" + (el.tag) + "\",";
-  }
-  // module data generation functions
-  for (var i = 0; i < state.dataGenFns.length; i++) {
-    data += state.dataGenFns[i](el);
-  }
-  // attributes
-  if (el.attrs) {
-    data += "attrs:{" + (genProps(el.attrs)) + "},";
-  }
-  // DOM props
-  if (el.props) {
-    data += "domProps:{" + (genProps(el.props)) + "},";
-  }
-  // event handlers
-  if (el.events) {
-    data += (genHandlers(el.events, false)) + ",";
-  }
-  if (el.nativeEvents) {
-    data += (genHandlers(el.nativeEvents, true)) + ",";
-  }
-  // slot target
-  // only for non-scoped slots
-  if (el.slotTarget && !el.slotScope) {
-    data += "slot:" + (el.slotTarget) + ",";
-  }
-  // scoped slots
-  if (el.scopedSlots) {
-    data += (genScopedSlots(el.scopedSlots, state)) + ",";
-  }
-  // component v-model
-  if (el.model) {
-    data += "model:{value:" + (el.model.value) + ",callback:" + (el.model.callback) + ",expression:" + (el.model.expression) + "},";
-  }
-  // inline-template
-  if (el.inlineTemplate) {
-    var inlineTemplate = genInlineTemplate(el, state);
-    if (inlineTemplate) {
-      data += inlineTemplate + ",";
-    }
-  }
-  data = data.replace(/,$/, '') + '}';
-  // v-bind data wrap
-  if (el.wrapData) {
-    data = el.wrapData(data);
-  }
-  // v-on data wrap
-  if (el.wrapListeners) {
-    data = el.wrapListeners(data);
-  }
-  return data
-}
-
-function genDirectives (el, state) {
-  var dirs = el.directives;
-  if (!dirs) { return }
-  var res = 'directives:[';
-  var hasRuntime = false;
-  var i, l, dir, needRuntime;
-  for (i = 0, l = dirs.length; i < l; i++) {
-    dir = dirs[i];
-    needRuntime = true;
-    var gen = state.directives[dir.name];
-    if (gen) {
-      // compile-time directive that manipulates AST.
-      // returns true if it also needs a runtime counterpart.
-      needRuntime = !!gen(el, dir, state.warn);
-    }
-    if (needRuntime) {
-      hasRuntime = true;
-      res += "{name:\"" + (dir.name) + "\",rawName:\"" + (dir.rawName) + "\"" + (dir.value ? (",value:(" + (dir.value) + "),expression:" + (JSON.stringify(dir.value))) : '') + (dir.arg ? (",arg:\"" + (dir.arg) + "\"") : '') + (dir.modifiers ? (",modifiers:" + (JSON.stringify(dir.modifiers))) : '') + "},";
-    }
-  }
-  if (hasRuntime) {
-    return res.slice(0, -1) + ']'
-  }
-}
-
-function genInlineTemplate (el, state) {
-  var ast = el.children[0];
-  if (process.env.NODE_ENV !== 'production' && (
-    el.children.length !== 1 || ast.type !== 1
-  )) {
-    state.warn('Inline-template components must have exactly one child element.');
-  }
-  if (ast.type === 1) {
-    var inlineRenderFns = generate(ast, state.options);
-    return ("inlineTemplate:{render:function(){" + (inlineRenderFns.render) + "},staticRenderFns:[" + (inlineRenderFns.staticRenderFns.map(function (code) { return ("function(){" + code + "}"); }).join(',')) + "]}")
-  }
-}
-
-function genScopedSlots (
-  slots,
-  state
-) {
-  return ("scopedSlots:_u([" + (Object.keys(slots).map(function (key) {
-      return genScopedSlot(key, slots[key], state)
-    }).join(',')) + "])")
-}
-
-function genScopedSlot (
-  key,
-  el,
-  state
-) {
-  if (el.for && !el.forProcessed) {
-    return genForScopedSlot(key, el, state)
-  }
-  var fn = "function(" + (String(el.slotScope)) + "){" +
-    "return " + (el.tag === 'template'
-      ? el.if
-        ? ("(" + (el.if) + ")?" + (genChildren(el, state) || 'undefined') + ":undefined")
-        : genChildren(el, state) || 'undefined'
-      : genElement(el, state)) + "}";
-  return ("{key:" + key + ",fn:" + fn + "}")
-}
-
-function genForScopedSlot (
-  key,
-  el,
-  state
-) {
-  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 " + (genScopedSlot(key, el, state)) +
-    '})'
-}
-
-function genChildren (
-  el,
-  state,
-  checkSkip,
-  altGenElement,
-  altGenNode
-) {
-  var children = el.children;
-  if (children.length) {
-    var el$1 = children[0];
-    // optimize single v-for
-    if (children.length === 1 &&
-      el$1.for &&
-      el$1.tag !== 'template' &&
-      el$1.tag !== 'slot'
-    ) {
-      var normalizationType = checkSkip
-        ? state.maybeComponent(el$1) ? ",1" : ",0"
-        : "";
-      return ("" + ((altGenElement || genElement)(el$1, state)) + normalizationType)
-    }
-    var normalizationType$1 = checkSkip
-      ? getNormalizationType(children, state.maybeComponent)
-      : 0;
-    var gen = altGenNode || genNode;
-    return ("[" + (children.map(function (c) { return gen(c, state); }).join(',')) + "]" + (normalizationType$1 ? ("," + normalizationType$1) : ''))
-  }
-}
-
-// determine the normalization needed for the children array.
-// 0: no normalization needed
-// 1: simple normalization needed (possible 1-level deep nested array)
-// 2: full normalization needed
-function getNormalizationType (
-  children,
-  maybeComponent
-) {
-  var res = 0;
-  for (var i = 0; i < children.length; i++) {
-    var el = children[i];
-    if (el.type !== 1) {
-      continue
-    }
-    if (needsNormalization(el) ||
-        (el.ifConditions && el.ifConditions.some(function (c) { return needsNormalization(c.block); }))) {
-      res = 2;
-      break
-    }
-    if (maybeComponent(el) ||
-        (el.ifConditions && el.ifConditions.some(function (c) { return maybeComponent(c.block); }))) {
-      res = 1;
-    }
-  }
-  return res
-}
-
-function needsNormalization (el) {
-  return el.for !== undefined || el.tag === 'template' || el.tag === 'slot'
-}
-
-function genNode (node, state) {
-  if (node.type === 1) {
-    return genElement(node, state)
-  } else if (node.type === 3 && node.isComment) {
-    return genComment(node)
-  } else {
-    return genText(node)
-  }
-}
-
-function genText (text) {
-  return ("_v(" + (text.type === 2
-    ? text.expression // no need for () because already wrapped in _s()
-    : transformSpecialNewlines(JSON.stringify(text.text))) + ")")
-}
-
-function genComment (comment) {
-  return ("_e(" + (JSON.stringify(comment.text)) + ")")
-}
-
-function genSlot (el, state) {
-  var slotName = el.slotName || '"default"';
-  var children = genChildren(el, state);
-  var res = "_t(" + slotName + (children ? ("," + children) : '');
-  var attrs = el.attrs && ("{" + (el.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,
-  state
-) {
-  var children = el.inlineTemplate ? null : genChildren(el, state, true);
-  return ("_c(" + componentName + "," + (genData$2(el, state)) + (children ? ("," + children) : '') + ")")
-}
-
-function genProps (props) {
-  var res = '';
-  for (var i = 0; i < props.length; i++) {
-    var prop = props[i];
-    /* istanbul ignore if */
-    {
-      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')
-}
-
-/*  */
-
-// these keywords should not appear inside expressions, but operators like
-// typeof, instanceof and in are allowed
-var prohibitedKeywordRE = new RegExp('\\b' + (
-  'do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const,' +
-  'super,throw,while,yield,delete,export,import,return,switch,default,' +
-  'extends,finally,continue,debugger,function,arguments'
-).split(',').join('\\b|\\b') + '\\b');
-
-// these unary operators should not be used as property/method names
-var unaryOperatorsRE = new RegExp('\\b' + (
-  'delete,typeof,void'
-).split(',').join('\\s*\\([^\\)]*\\)|\\b') + '\\s*\\([^\\)]*\\)');
-
-// strip strings in expressions
-var stripStringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g;
-
-// detect problematic expressions in a template
-function detectErrors (ast) {
-  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 if (onRE.test(name)) {
-            checkEvent(value, (name + "=\"" + 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 checkEvent (exp, text, errors) {
-  var stipped = exp.replace(stripStringRE, '');
-  var keywordMatch = stipped.match(unaryOperatorsRE);
-  if (keywordMatch && stipped.charAt(keywordMatch.index - 1) !== '$') {
-    errors.push(
-      "avoid using JavaScript unary operator as property name: " +
-      "\"" + (keywordMatch[0]) + "\" in expression " + (text.trim())
-    );
-  }
-  checkExpression(exp, 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') {
-    try {
-      new Function(("var " + ident + "=_"));
-    } catch (e) {
-      errors.push(("invalid " + type + " \"" + ident + "\" in expression: " + (text.trim())));
-    }
-  }
-}
-
-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]) + "\"\n  Raw expression: " + (text.trim())
-      );
-    } else {
-      errors.push(
-        "invalid expression: " + (e.message) + " in\n\n" +
-        "    " + exp + "\n\n" +
-        "  Raw expression: " + (text.trim()) + "\n"
-      );
-    }
-  }
-}
-
-/*  */
-
-
-
-function createFunction (code, errors) {
-  try {
-    return new Function(code)
-  } catch (err) {
-    errors.push({ err: err, code: code });
-    return noop
-  }
-}
-
-function createCompileToFunctionFn (compile) {
-  var cache = Object.create(null);
-
-  return function compileToFunctions (
-    template,
-    options,
-    vm
-  ) {
-    options = extend({}, options);
-    var warn$$1 = options.warn || warn;
-    delete options.warn;
-
-    /* istanbul ignore if */
-    if (process.env.NODE_ENV !== 'production') {
-      // detect possible CSP restriction
-      try {
-        new Function('return 1');
-      } catch (e) {
-        if (e.toString().match(/unsafe-eval|CSP/)) {
-          warn$$1(
-            'It seems you are using the standalone build of Vue.js in an ' +
-            'environment with Content Security Policy that prohibits unsafe-eval. ' +
-            'The template compiler cannot work in this environment. Consider ' +
-            'relaxing the policy to allow unsafe-eval or pre-compiling your ' +
-            'templates into render functions.'
-          );
-        }
-      }
-    }
-
-    // check cache
-    var key = options.delimiters
-      ? String(options.delimiters) + template
-      : template;
-    if (cache[key]) {
-      return cache[key]
-    }
-
-    // compile
-    var compiled = compile(template, options);
-
-    // check compilation errors/tips
-    if (process.env.NODE_ENV !== 'production') {
-      if (compiled.errors && compiled.errors.length) {
-        warn$$1(
-          "Error compiling template:\n\n" + template + "\n\n" +
-          compiled.errors.map(function (e) { return ("- " + e); }).join('\n') + '\n',
-          vm
-        );
-      }
-      if (compiled.tips && compiled.tips.length) {
-        compiled.tips.forEach(function (msg) { return tip(msg, vm); });
-      }
-    }
-
-    // turn code into functions
-    var res = {};
-    var fnGenErrors = [];
-    res.render = createFunction(compiled.render, fnGenErrors);
-    res.staticRenderFns = compiled.staticRenderFns.map(function (code) {
-      return createFunction(code, fnGenErrors)
-    });
-
-    // check function generation errors.
-    // this should only happen if there is a bug in the compiler itself.
-    // mostly for codegen development use
-    /* istanbul ignore if */
-    if (process.env.NODE_ENV !== 'production') {
-      if ((!compiled.errors || !compiled.errors.length) && fnGenErrors.length) {
-        warn$$1(
-          "Failed to generate render function:\n\n" +
-          fnGenErrors.map(function (ref) {
-            var err = ref.err;
-            var code = ref.code;
-
-            return ((err.toString()) + " in\n\n" + code + "\n");
-        }).join('\n'),
-          vm
-        );
-      }
-    }
-
-    return (cache[key] = res)
-  }
-}
-
-/*  */
-
-function createCompilerCreator (baseCompile) {
-  return function createCompiler (baseOptions) {
-    function compile (
-      template,
-      options
-    ) {
-      var finalOptions = Object.create(baseOptions);
-      var errors = [];
-      var tips = [];
-      finalOptions.warn = function (msg, tip) {
-        (tip ? tips : errors).push(msg);
-      };
-
-      if (options) {
-        // merge custom modules
-        if (options.modules) {
-          finalOptions.modules =
-            (baseOptions.modules || []).concat(options.modules);
-        }
-        // merge custom directives
-        if (options.directives) {
-          finalOptions.directives = extend(
-            Object.create(baseOptions.directives || null),
-            options.directives
-          );
-        }
-        // copy other options
-        for (var key in options) {
-          if (key !== 'modules' && key !== 'directives') {
-            finalOptions[key] = options[key];
-          }
-        }
-      }
-
-      var compiled = baseCompile(template, finalOptions);
-      if (process.env.NODE_ENV !== 'production') {
-        errors.push.apply(errors, detectErrors(compiled.ast));
-      }
-      compiled.errors = errors;
-      compiled.tips = tips;
-      return compiled
-    }
-
-    return {
-      compile: compile,
-      compileToFunctions: createCompileToFunctionFn(compile)
-    }
-  }
-}
-
-/*  */
-
-// `createCompilerCreator` allows creating compilers that use alternative
-// parser/optimizer/codegen, e.g the SSR optimizing compiler.
-// Here we just export a default compiler using the default parts.
-var createCompiler = createCompilerCreator(function baseCompile (
-  template,
-  options
-) {
-  var ast = parse(template.trim(), options);
-  if (options.optimize !== false) {
-    optimize(ast, options);
-  }
-  var code = generate(ast, options);
-  return {
-    ast: ast,
-    render: code.render,
-    staticRenderFns: code.staticRenderFns
-  }
-});
-
-/*  */
-
-var ref$1 = createCompiler(baseOptions);
-var compile = ref$1.compile;
-var compileToFunctions = ref$1.compileToFunctions;
-
-/*  */
-
-// check whether current browser encodes a char inside attribute values
-var div;
-function getShouldDecode (href) {
-  div = div || document.createElement('div');
-  div.innerHTML = href ? "<a href=\"\n\"/>" : "<div a=\"\n\"/>";
-  return div.innerHTML.indexOf('&#10;') > 0
-}
-
-// #3663: IE encodes newlines inside attribute values while other browsers don't
-var shouldDecodeNewlines = inBrowser ? getShouldDecode(false) : false;
-// #6828: chrome encodes content in a[href]
-var shouldDecodeNewlinesForHref = inBrowser ? getShouldDecode(true) : false;
-
-/*  */
-
-var idToTemplate = cached(function (id) {
-  var el = query(id);
-  return el && el.innerHTML
-});
-
-var mount = Vue.prototype.$mount;
-Vue.prototype.$mount = function (
-  el,
-  hydrating
-) {
-  el = el && query(el);
-
-  /* istanbul ignore if */
-  if (el === document.body || el === document.documentElement) {
-    process.env.NODE_ENV !== 'production' && warn(
-      "Do not mount Vue to <html> or <body> - mount to normal elements instead."
-    );
-    return this
-  }
-
-  var options = this.$options;
-  // resolve template/el and convert to render function
-  if (!options.render) {
-    var template = options.template;
-    if (template) {
-      if (typeof template === 'string') {
-        if (template.charAt(0) === '#') {
-          template = idToTemplate(template);
-          /* istanbul ignore if */
-          if (process.env.NODE_ENV !== 'production' && !template) {
-            warn(
-              ("Template element not found or is empty: " + (options.template)),
-              this
-            );
-          }
-        }
-      } else if (template.nodeType) {
-        template = template.innerHTML;
-      } else {
-        if (process.env.NODE_ENV !== 'production') {
-          warn('invalid template option:' + template, this);
-        }
-        return this
-      }
-    } else if (el) {
-      template = getOuterHTML(el);
-    }
-    if (template) {
-      /* istanbul ignore if */
-      if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
-        mark('compile');
-      }
-
-      var ref = compileToFunctions(template, {
-        shouldDecodeNewlines: shouldDecodeNewlines,
-        shouldDecodeNewlinesForHref: shouldDecodeNewlinesForHref,
-        delimiters: options.delimiters,
-        comments: options.comments
-      }, this);
-      var render = ref.render;
-      var staticRenderFns = ref.staticRenderFns;
-      options.render = render;
-      options.staticRenderFns = staticRenderFns;
-
-      /* istanbul ignore if */
-      if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
-        mark('compile end');
-        measure(("vue " + (this._name) + " compile"), 'compile', 'compile end');
-      }
-    }
-  }
-  return mount.call(this, el, hydrating)
-};
-
-/**
- * Get outerHTML of elements, taking care
- * of SVG elements in IE as well.
- */
-function getOuterHTML (el) {
-  if (el.outerHTML) {
-    return el.outerHTML
-  } else {
-    var container = document.createElement('div');
-    container.appendChild(el.cloneNode(true));
-    return container.innerHTML
-  }
+  module.exports = require('./vue.common.dev.js')
 }
diff --git a/dist/vue.runtime.common.js b/dist/vue.runtime.common.js
index 7caaf50b..07ddaa2c 100644
--- a/dist/vue.runtime.common.js
+++ b/dist/vue.runtime.common.js
@@ -1,8105 +1,5 @@
-/*!
- * Vue.js v2.5.22
- * (c) 2014-2019 Evan You
- * Released under the MIT License.
- */
-'use strict';
-
-/*  */
-
-var emptyObject = Object.freeze({});
-
-// These helpers produce better VM code in JS engines due to their
-// explicitness and function inlining.
-function isUndef (v) {
-  return v === undefined || v === null
-}
-
-function isDef (v) {
-  return v !== undefined && v !== null
-}
-
-function isTrue (v) {
-  return v === true
-}
-
-function isFalse (v) {
-  return v === false
-}
-
-/**
- * Check if value is primitive.
- */
-function isPrimitive (value) {
-  return (
-    typeof value === 'string' ||
-    typeof value === 'number' ||
-    // $flow-disable-line
-    typeof value === 'symbol' ||
-    typeof value === 'boolean'
-  )
-}
-
-/**
- * Quick object check - this is primarily used to tell
- * Objects from primitive values when we know the value
- * is a JSON-compliant type.
- */
-function isObject (obj) {
-  return obj !== null && typeof obj === 'object'
-}
-
-/**
- * Get the raw type string of a value, e.g., [object Object].
- */
-var _toString = Object.prototype.toString;
-
-function toRawType (value) {
-  return _toString.call(value).slice(8, -1)
-}
-
-/**
- * Strict object type check. Only returns true
- * for plain JavaScript objects.
- */
-function isPlainObject (obj) {
-  return _toString.call(obj) === '[object Object]'
-}
-
-function isRegExp (v) {
-  return _toString.call(v) === '[object RegExp]'
-}
-
-/**
- * Check if val is a valid array index.
- */
-function isValidArrayIndex (val) {
-  var n = parseFloat(String(val));
-  return n >= 0 && Math.floor(n) === n && isFinite(val)
-}
-
-/**
- * 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 an input value to a number for persistence.
- * If the conversion fails, return original string.
- */
-function toNumber (val) {
-  var n = parseFloat(val);
-  return isNaN(n) ? val : n
-}
-
-/**
- * Make a map and return a function for checking if a key
- * is in that map.
- */
-function makeMap (
-  str,
-  expectsLowerCase
-) {
-  var map = Object.create(null);
-  var list = str.split(',');
-  for (var i = 0; i < list.length; i++) {
-    map[list[i]] = true;
-  }
-  return expectsLowerCase
-    ? function (val) { return map[val.toLowerCase()]; }
-    : function (val) { return map[val]; }
-}
-
-/**
- * Check if a tag is a built-in tag.
- */
-var isBuiltInTag = makeMap('slot,component', true);
-
-/**
- * Check if an attribute is a reserved attribute.
- */
-var isReservedAttribute = makeMap('key,ref,slot,slot-scope,is');
-
-/**
- * Remove an item from an array.
- */
-function remove (arr, item) {
-  if (arr.length) {
-    var index = arr.indexOf(item);
-    if (index > -1) {
-      return arr.splice(index, 1)
-    }
-  }
-}
-
-/**
- * Check whether an object has the property.
- */
-var hasOwnProperty = Object.prototype.hasOwnProperty;
-function hasOwn (obj, key) {
-  return hasOwnProperty.call(obj, key)
-}
-
-/**
- * Create a cached version of a pure function.
- */
-function cached (fn) {
-  var cache = Object.create(null);
-  return (function cachedFn (str) {
-    var hit = cache[str];
-    return hit || (cache[str] = fn(str))
-  })
-}
-
-/**
- * Camelize a hyphen-delimited string.
- */
-var camelizeRE = /-(\w)/g;
-var camelize = cached(function (str) {
-  return str.replace(camelizeRE, function (_, c) { return c ? c.toUpperCase() : ''; })
-});
-
-/**
- * Capitalize a string.
- */
-var capitalize = cached(function (str) {
-  return str.charAt(0).toUpperCase() + str.slice(1)
-});
-
-/**
- * Hyphenate a camelCase string.
- */
-var hyphenateRE = /\B([A-Z])/g;
-var hyphenate = cached(function (str) {
-  return str.replace(hyphenateRE, '-$1').toLowerCase()
-});
-
-/**
- * Simple bind polyfill for environments that do not support it,
- * e.g., PhantomJS 1.x. Technically, we don't need this anymore
- * since native bind is now performant enough in most browsers.
- * But removing it would mean breaking code that was able to run in
- * PhantomJS 1.x, so this must be kept for backward compatibility.
- */
-
-/* istanbul ignore next */
-function polyfillBind (fn, ctx) {
-  function boundFn (a) {
-    var l = arguments.length;
-    return l
-      ? l > 1
-        ? fn.apply(ctx, arguments)
-        : fn.call(ctx, a)
-      : fn.call(ctx)
-  }
-
-  boundFn._length = fn.length;
-  return boundFn
-}
-
-function nativeBind (fn, ctx) {
-  return fn.bind(ctx)
-}
-
-var bind = Function.prototype.bind
-  ? nativeBind
-  : polyfillBind;
-
-/**
- * Convert an Array-like object to a real Array.
- */
-function toArray (list, start) {
-  start = start || 0;
-  var i = list.length - start;
-  var ret = new Array(i);
-  while (i--) {
-    ret[i] = list[i + start];
-  }
-  return ret
-}
-
-/**
- * Mix properties into target object.
- */
-function extend (to, _from) {
-  for (var key in _from) {
-    to[key] = _from[key];
-  }
-  return to
-}
-
-/**
- * Merge an Array of Objects into a single Object.
- */
-function toObject (arr) {
-  var res = {};
-  for (var i = 0; i < arr.length; i++) {
-    if (arr[i]) {
-      extend(res, arr[i]);
-    }
-  }
-  return res
-}
-
-/* eslint-disable no-unused-vars */
-
-/**
- * Perform no operation.
- * Stubbing args to make Flow happy without leaving useless transpiled code
- * with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/).
- */
-function noop (a, b, c) {}
-
-/**
- * Always return false.
- */
-var no = function (a, b, c) { return false; };
-
-/* eslint-enable no-unused-vars */
-
-/**
- * Return the same value.
- */
-var identity = function (_) { return _; };
-
-/**
- * Check if two values are loosely equal - that is,
- * if they are plain objects, do they have the same shape?
- */
-function looseEqual (a, b) {
-  if (a === b) { return true }
-  var isObjectA = isObject(a);
-  var isObjectB = isObject(b);
-  if (isObjectA && isObjectB) {
-    try {
-      var isArrayA = Array.isArray(a);
-      var isArrayB = Array.isArray(b);
-      if (isArrayA && isArrayB) {
-        return a.length === b.length && a.every(function (e, i) {
-          return looseEqual(e, b[i])
-        })
-      } else if (a instanceof Date && b instanceof Date) {
-        return a.getTime() === b.getTime()
-      } else if (!isArrayA && !isArrayB) {
-        var keysA = Object.keys(a);
-        var keysB = Object.keys(b);
-        return keysA.length === keysB.length && keysA.every(function (key) {
-          return looseEqual(a[key], b[key])
-        })
-      } else {
-        /* istanbul ignore next */
-        return false
-      }
-    } catch (e) {
-      /* istanbul ignore next */
-      return false
-    }
-  } else if (!isObjectA && !isObjectB) {
-    return String(a) === String(b)
-  } else {
-    return false
-  }
-}
-
-/**
- * Return the first index at which a loosely equal value can be
- * found in the array (if value is a plain object, the array must
- * contain an object of the same shape), or -1 if it is not present.
- */
-function looseIndexOf (arr, val) {
-  for (var i = 0; i < arr.length; i++) {
-    if (looseEqual(arr[i], val)) { return i }
-  }
-  return -1
-}
-
-/**
- * Ensure a function is called only once.
- */
-function once (fn) {
-  var called = false;
-  return function () {
-    if (!called) {
-      called = true;
-      fn.apply(this, arguments);
-    }
-  }
-}
-
-var SSR_ATTR = 'data-server-rendered';
-
-var ASSET_TYPES = [
-  'component',
-  'directive',
-  'filter'
-];
-
-var LIFECYCLE_HOOKS = [
-  'beforeCreate',
-  'created',
-  'beforeMount',
-  'mounted',
-  'beforeUpdate',
-  'updated',
-  'beforeDestroy',
-  'destroyed',
-  'activated',
-  'deactivated',
-  'errorCaptured'
-];
-
-/*  */
-
-
-
-var config = ({
-  /**
-   * Option merge strategies (used in core/util/options)
-   */
-  // $flow-disable-line
-  optionMergeStrategies: Object.create(null),
-
-  /**
-   * Whether to suppress warnings.
-   */
-  silent: false,
-
-  /**
-   * Show production mode tip message on boot?
-   */
-  productionTip: process.env.NODE_ENV !== 'production',
-
-  /**
-   * Whether to enable devtools
-   */
-  devtools: process.env.NODE_ENV !== 'production',
-
-  /**
-   * Whether to record perf
-   */
-  performance: false,
-
-  /**
-   * Error handler for watcher errors
-   */
-  errorHandler: null,
-
-  /**
-   * Warn handler for watcher warns
-   */
-  warnHandler: null,
-
-  /**
-   * Ignore certain custom elements
-   */
-  ignoredElements: [],
-
-  /**
-   * Custom user key aliases for v-on
-   */
-  // $flow-disable-line
-  keyCodes: Object.create(null),
-
-  /**
-   * Check if a tag is reserved so that it cannot be registered as a
-   * component. This is platform-dependent and may be overwritten.
-   */
-  isReservedTag: no,
-
-  /**
-   * Check if an attribute is reserved so that it cannot be used as a component
-   * prop. This is platform-dependent and may be overwritten.
-   */
-  isReservedAttr: no,
-
-  /**
-   * Check if a tag is an unknown element.
-   * Platform-dependent.
-   */
-  isUnknownElement: no,
-
-  /**
-   * Get the namespace of an element
-   */
-  getTagNamespace: noop,
-
-  /**
-   * Parse the real tag name for the specific platform.
-   */
-  parsePlatformTagName: identity,
-
-  /**
-   * Check if an attribute must be bound using property, e.g. value
-   * Platform-dependent.
-   */
-  mustUseProp: no,
-
-  /**
-   * Perform updates asynchronously. Intended to be used by Vue Test Utils
-   * This will significantly reduce performance if set to false.
-   */
-  async: true,
-
-  /**
-   * Exposed for legacy reasons
-   */
-  _lifecycleHooks: LIFECYCLE_HOOKS
-});
-
-/*  */
-
-/**
- * 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
-  }
-  var segments = path.split('.');
-  return function (obj) {
-    for (var i = 0; i < segments.length; i++) {
-      if (!obj) { return }
-      obj = obj[segments[i]];
-    }
-    return obj
-  }
-}
-
-/*  */
-
-// can we use __proto__?
-var hasProto = '__proto__' in {};
-
-// Browser environment sniffing
-var inBrowser = typeof window !== 'undefined';
-var inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform;
-var weexPlatform = inWeex && WXEnvironment.platform.toLowerCase();
-var UA = inBrowser && window.navigator.userAgent.toLowerCase();
-var isIE = UA && /msie|trident/.test(UA);
-var isIE9 = UA && UA.indexOf('msie 9.0') > 0;
-var isEdge = UA && UA.indexOf('edge/') > 0;
-var isAndroid = (UA && UA.indexOf('android') > 0) || (weexPlatform === 'android');
-var isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || (weexPlatform === 'ios');
-var isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge;
-
-// Firefox has a "watch" function on Object.prototype...
-var nativeWatch = ({}).watch;
-
-var supportsPassive = false;
-if (inBrowser) {
-  try {
-    var opts = {};
-    Object.defineProperty(opts, 'passive', ({
-      get: function get () {
-        /* istanbul ignore next */
-        supportsPassive = true;
-      }
-    })); // https://github.com/facebook/flow/issues/285
-    window.addEventListener('test-passive', null, opts);
-  } catch (e) {}
-}
-
-// this needs to be lazy-evaled because vue may be required before
-// vue-server-renderer can set VUE_ENV
-var _isServer;
-var isServerRendering = function () {
-  if (_isServer === undefined) {
-    /* istanbul ignore if */
-    if (!inBrowser && !inWeex && typeof global !== 'undefined') {
-      // detect presence of vue-server-renderer and avoid
-      // Webpack shimming the process
-      _isServer = global['process'] && global['process'].env.VUE_ENV === 'server';
-    } else {
-      _isServer = false;
-    }
-  }
-  return _isServer
-};
-
-// detect devtools
-var devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__;
-
-/* istanbul ignore next */
-function isNative (Ctor) {
-  return typeof Ctor === 'function' && /native code/.test(Ctor.toString())
-}
-
-var hasSymbol =
-  typeof Symbol !== 'undefined' && isNative(Symbol) &&
-  typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys);
-
-var _Set;
-/* istanbul ignore if */ // $flow-disable-line
-if (typeof Set !== 'undefined' && isNative(Set)) {
-  // use native Set when available.
-  _Set = Set;
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./vue.runtime.common.prod.js')
 } else {
-  // a non-standard Set polyfill that only works with primitive keys.
-  _Set = /*@__PURE__*/(function () {
-    function Set () {
-      this.set = Object.create(null);
-    }
-    Set.prototype.has = function has (key) {
-      return this.set[key] === true
-    };
-    Set.prototype.add = function add (key) {
-      this.set[key] = true;
-    };
-    Set.prototype.clear = function clear () {
-      this.set = Object.create(null);
-    };
-
-    return Set;
-  }());
-}
-
-/*  */
-
-var warn = noop;
-var tip = noop;
-var generateComponentTrace = (noop); // work around flow check
-var formatComponentName = (noop);
-
-if (process.env.NODE_ENV !== 'production') {
-  var hasConsole = typeof console !== 'undefined';
-  var classifyRE = /(?:^|[-_])(\w)/g;
-  var classify = function (str) { return str
-    .replace(classifyRE, function (c) { return c.toUpperCase(); })
-    .replace(/[-_]/g, ''); };
-
-  warn = function (msg, vm) {
-    var trace = vm ? generateComponentTrace(vm) : '';
-
-    if (config.warnHandler) {
-      config.warnHandler.call(null, msg, vm, trace);
-    } else if (hasConsole && (!config.silent)) {
-      console.error(("[Vue warn]: " + msg + trace));
-    }
-  };
-
-  tip = function (msg, vm) {
-    if (hasConsole && (!config.silent)) {
-      console.warn("[Vue tip]: " + msg + (
-        vm ? generateComponentTrace(vm) : ''
-      ));
-    }
-  };
-
-  formatComponentName = function (vm, includeFile) {
-    if (vm.$root === vm) {
-      return '<Root>'
-    }
-    var options = typeof vm === 'function' && vm.cid != null
-      ? vm.options
-      : vm._isVue
-        ? vm.$options || vm.constructor.options
-        : vm;
-    var name = options.name || options._componentTag;
-    var file = options.__file;
-    if (!name && file) {
-      var match = file.match(/([^/\\]+)\.vue$/);
-      name = match && match[1];
-    }
-
-    return (
-      (name ? ("<" + (classify(name)) + ">") : "<Anonymous>") +
-      (file && includeFile !== false ? (" at " + file) : '')
-    )
-  };
-
-  var repeat = function (str, n) {
-    var res = '';
-    while (n) {
-      if (n % 2 === 1) { res += str; }
-      if (n > 1) { str += str; }
-      n >>= 1;
-    }
-    return res
-  };
-
-  generateComponentTrace = function (vm) {
-    if (vm._isVue && vm.$parent) {
-      var tree = [];
-      var currentRecursiveSequence = 0;
-      while (vm) {
-        if (tree.length > 0) {
-          var last = tree[tree.length - 1];
-          if (last.constructor === vm.constructor) {
-            currentRecursiveSequence++;
-            vm = vm.$parent;
-            continue
-          } else if (currentRecursiveSequence > 0) {
-            tree[tree.length - 1] = [last, currentRecursiveSequence];
-            currentRecursiveSequence = 0;
-          }
-        }
-        tree.push(vm);
-        vm = vm.$parent;
-      }
-      return '\n\nfound in\n\n' + tree
-        .map(function (vm, i) { return ("" + (i === 0 ? '---> ' : repeat(' ', 5 + i * 2)) + (Array.isArray(vm)
-            ? ((formatComponentName(vm[0])) + "... (" + (vm[1]) + " recursive calls)")
-            : formatComponentName(vm))); })
-        .join('\n')
-    } else {
-      return ("\n\n(found in " + (formatComponentName(vm)) + ")")
-    }
-  };
-}
-
-/*  */
-
-var uid = 0;
-
-/**
- * A dep is an observable that can have multiple
- * directives subscribing to it.
- */
-var Dep = function Dep () {
-  this.id = uid++;
-  this.subs = [];
-};
-
-Dep.prototype.addSub = function addSub (sub) {
-  this.subs.push(sub);
-};
-
-Dep.prototype.removeSub = function removeSub (sub) {
-  remove(this.subs, sub);
-};
-
-Dep.prototype.depend = function depend () {
-  if (Dep.target) {
-    Dep.target.addDep(this);
-  }
-};
-
-Dep.prototype.notify = function notify () {
-  // stabilize the subscriber list first
-  var subs = this.subs.slice();
-  if (process.env.NODE_ENV !== 'production' && !config.async) {
-    // subs aren't sorted in scheduler if not running async
-    // we need to sort them now to make sure they fire in correct
-    // order
-    subs.sort(function (a, b) { return a.id - b.id; });
-  }
-  for (var i = 0, l = subs.length; i < l; i++) {
-    subs[i].update();
-  }
-};
-
-// The current target watcher being evaluated.
-// This is globally unique because only one watcher
-// can be evaluated at a time.
-Dep.target = null;
-var targetStack = [];
-
-function pushTarget (target) {
-  targetStack.push(target);
-  Dep.target = target;
-}
-
-function popTarget () {
-  targetStack.pop();
-  Dep.target = targetStack[targetStack.length - 1];
-}
-
-/*  */
-
-var VNode = function VNode (
-  tag,
-  data,
-  children,
-  text,
-  elm,
-  context,
-  componentOptions,
-  asyncFactory
-) {
-  this.tag = tag;
-  this.data = data;
-  this.children = children;
-  this.text = text;
-  this.elm = elm;
-  this.ns = undefined;
-  this.context = context;
-  this.fnContext = undefined;
-  this.fnOptions = undefined;
-  this.fnScopeId = undefined;
-  this.key = data && data.key;
-  this.componentOptions = componentOptions;
-  this.componentInstance = undefined;
-  this.parent = undefined;
-  this.raw = false;
-  this.isStatic = false;
-  this.isRootInsert = true;
-  this.isComment = false;
-  this.isCloned = false;
-  this.isOnce = false;
-  this.asyncFactory = asyncFactory;
-  this.asyncMeta = undefined;
-  this.isAsyncPlaceholder = false;
-};
-
-var prototypeAccessors = { child: { configurable: true } };
-
-// DEPRECATED: alias for componentInstance for backwards compat.
-/* istanbul ignore next */
-prototypeAccessors.child.get = function () {
-  return this.componentInstance
-};
-
-Object.defineProperties( VNode.prototype, prototypeAccessors );
-
-var createEmptyVNode = function (text) {
-  if ( text === void 0 ) text = '';
-
-  var node = new VNode();
-  node.text = text;
-  node.isComment = true;
-  return node
-};
-
-function createTextVNode (val) {
-  return new VNode(undefined, undefined, undefined, String(val))
-}
-
-// optimized shallow clone
-// used for static nodes and slot nodes because they may be reused across
-// multiple renders, cloning them avoids errors when DOM manipulations rely
-// on their elm reference.
-function cloneVNode (vnode) {
-  var cloned = new VNode(
-    vnode.tag,
-    vnode.data,
-    // #7975
-    // clone children array to avoid mutating original in case of cloning
-    // a child.
-    vnode.children && vnode.children.slice(),
-    vnode.text,
-    vnode.elm,
-    vnode.context,
-    vnode.componentOptions,
-    vnode.asyncFactory
-  );
-  cloned.ns = vnode.ns;
-  cloned.isStatic = vnode.isStatic;
-  cloned.key = vnode.key;
-  cloned.isComment = vnode.isComment;
-  cloned.fnContext = vnode.fnContext;
-  cloned.fnOptions = vnode.fnOptions;
-  cloned.fnScopeId = vnode.fnScopeId;
-  cloned.asyncMeta = vnode.asyncMeta;
-  cloned.isCloned = true;
-  return cloned
-}
-
-/*
- * not type checking this file because flow doesn't play well with
- * dynamically accessing methods on Array prototype
- */
-
-var arrayProto = Array.prototype;
-var arrayMethods = Object.create(arrayProto);
-
-var methodsToPatch = [
-  'push',
-  'pop',
-  'shift',
-  'unshift',
-  'splice',
-  'sort',
-  'reverse'
-];
-
-/**
- * Intercept mutating methods and emit events
- */
-methodsToPatch.forEach(function (method) {
-  // cache original method
-  var original = arrayProto[method];
-  def(arrayMethods, method, function mutator () {
-    var args = [], len = arguments.length;
-    while ( len-- ) args[ len ] = arguments[ len ];
-
-    var result = original.apply(this, args);
-    var ob = this.__ob__;
-    var inserted;
-    switch (method) {
-      case 'push':
-      case 'unshift':
-        inserted = args;
-        break
-      case 'splice':
-        inserted = args.slice(2);
-        break
-    }
-    if (inserted) { ob.observeArray(inserted); }
-    // notify change
-    ob.dep.notify();
-    return result
-  });
-});
-
-/*  */
-
-var arrayKeys = Object.getOwnPropertyNames(arrayMethods);
-
-/**
- * In some cases we may want to disable observation inside a component's
- * update computation.
- */
-var shouldObserve = true;
-
-function toggleObserving (value) {
-  shouldObserve = value;
-}
-
-/**
- * Observer class that is attached to each observed
- * object. Once attached, the observer converts the target
- * object's property keys into getter/setters that
- * collect dependencies and dispatch updates.
- */
-var Observer = function Observer (value) {
-  this.value = value;
-  this.dep = new Dep();
-  this.vmCount = 0;
-  def(value, '__ob__', this);
-  if (Array.isArray(value)) {
-    if (hasProto) {
-      protoAugment(value, arrayMethods);
-    } else {
-      copyAugment(value, arrayMethods, arrayKeys);
-    }
-    this.observeArray(value);
-  } else {
-    this.walk(value);
-  }
-};
-
-/**
- * Walk through all properties and convert them into
- * getter/setters. This method should only be called when
- * value type is Object.
- */
-Observer.prototype.walk = function walk (obj) {
-  var keys = Object.keys(obj);
-  for (var i = 0; i < keys.length; i++) {
-    defineReactive$$1(obj, keys[i]);
-  }
-};
-
-/**
- * Observe a list of Array items.
- */
-Observer.prototype.observeArray = function observeArray (items) {
-  for (var i = 0, l = items.length; i < l; i++) {
-    observe(items[i]);
-  }
-};
-
-// helpers
-
-/**
- * Augment a target Object or Array by intercepting
- * the prototype chain using __proto__
- */
-function protoAugment (target, src) {
-  /* eslint-disable no-proto */
-  target.__proto__ = src;
-  /* eslint-enable no-proto */
-}
-
-/**
- * Augment a target Object or Array by defining
- * hidden properties.
- */
-/* istanbul ignore next */
-function copyAugment (target, src, keys) {
-  for (var i = 0, l = keys.length; i < l; i++) {
-    var key = keys[i];
-    def(target, key, src[key]);
-  }
-}
-
-/**
- * Attempt to create an observer instance for a value,
- * returns the new observer if successfully observed,
- * or the existing observer if the value already has one.
- */
-function observe (value, asRootData) {
-  if (!isObject(value) || value instanceof VNode) {
-    return
-  }
-  var ob;
-  if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {
-    ob = value.__ob__;
-  } else if (
-    shouldObserve &&
-    !isServerRendering() &&
-    (Array.isArray(value) || isPlainObject(value)) &&
-    Object.isExtensible(value) &&
-    !value._isVue
-  ) {
-    ob = new Observer(value);
-  }
-  if (asRootData && ob) {
-    ob.vmCount++;
-  }
-  return ob
-}
-
-/**
- * Define a reactive property on an Object.
- */
-function defineReactive$$1 (
-  obj,
-  key,
-  val,
-  customSetter,
-  shallow
-) {
-  var dep = new Dep();
-
-  var property = Object.getOwnPropertyDescriptor(obj, key);
-  if (property && property.configurable === false) {
-    return
-  }
-
-  // cater for pre-defined getter/setters
-  var getter = property && property.get;
-  var setter = property && property.set;
-  if ((!getter || setter) && arguments.length === 2) {
-    val = obj[key];
-  }
-
-  var childOb = !shallow && observe(val);
-  Object.defineProperty(obj, key, {
-    enumerable: true,
-    configurable: true,
-    get: function reactiveGetter () {
-      var value = getter ? getter.call(obj) : val;
-      if (Dep.target) {
-        dep.depend();
-        if (childOb) {
-          childOb.dep.depend();
-          if (Array.isArray(value)) {
-            dependArray(value);
-          }
-        }
-      }
-      return value
-    },
-    set: function reactiveSetter (newVal) {
-      var value = getter ? getter.call(obj) : val;
-      /* eslint-disable no-self-compare */
-      if (newVal === value || (newVal !== newVal && value !== value)) {
-        return
-      }
-      /* eslint-enable no-self-compare */
-      if (process.env.NODE_ENV !== 'production' && customSetter) {
-        customSetter();
-      }
-      // #7981: for accessor properties without setter
-      if (getter && !setter) { return }
-      if (setter) {
-        setter.call(obj, newVal);
-      } else {
-        val = newVal;
-      }
-      childOb = !shallow && observe(newVal);
-      dep.notify();
-    }
-  });
-}
-
-/**
- * Set a property on an object. Adds the new property and
- * triggers change notification if the property doesn't
- * already exist.
- */
-function set (target, key, val) {
-  if (process.env.NODE_ENV !== 'production' &&
-    (isUndef(target) || isPrimitive(target))
-  ) {
-    warn(("Cannot set reactive property on undefined, null, or primitive value: " + ((target))));
-  }
-  if (Array.isArray(target) && isValidArrayIndex(key)) {
-    target.length = Math.max(target.length, key);
-    target.splice(key, 1, val);
-    return val
-  }
-  if (key in target && !(key in Object.prototype)) {
-    target[key] = val;
-    return val
-  }
-  var ob = (target).__ob__;
-  if (target._isVue || (ob && ob.vmCount)) {
-    process.env.NODE_ENV !== 'production' && warn(
-      'Avoid adding reactive properties to a Vue instance or its root $data ' +
-      'at runtime - declare it upfront in the data option.'
-    );
-    return val
-  }
-  if (!ob) {
-    target[key] = val;
-    return val
-  }
-  defineReactive$$1(ob.value, key, val);
-  ob.dep.notify();
-  return val
-}
-
-/**
- * Delete a property and trigger change if necessary.
- */
-function del (target, key) {
-  if (process.env.NODE_ENV !== 'production' &&
-    (isUndef(target) || isPrimitive(target))
-  ) {
-    warn(("Cannot delete reactive property on undefined, null, or primitive value: " + ((target))));
-  }
-  if (Array.isArray(target) && isValidArrayIndex(key)) {
-    target.splice(key, 1);
-    return
-  }
-  var ob = (target).__ob__;
-  if (target._isVue || (ob && ob.vmCount)) {
-    process.env.NODE_ENV !== 'production' && warn(
-      'Avoid deleting properties on a Vue instance or its root $data ' +
-      '- just set it to null.'
-    );
-    return
-  }
-  if (!hasOwn(target, key)) {
-    return
-  }
-  delete target[key];
-  if (!ob) {
-    return
-  }
-  ob.dep.notify();
-}
-
-/**
- * Collect dependencies on array elements when the array is touched, since
- * we cannot intercept array element access like property getters.
- */
-function dependArray (value) {
-  for (var e = (void 0), i = 0, l = value.length; i < l; i++) {
-    e = value[i];
-    e && e.__ob__ && e.__ob__.dep.depend();
-    if (Array.isArray(e)) {
-      dependArray(e);
-    }
-  }
-}
-
-/*  */
-
-/**
- * Option overwriting strategies are functions that handle
- * how to merge a parent option value and a child option
- * value into the final value.
- */
-var strats = config.optionMergeStrategies;
-
-/**
- * Options with restrictions
- */
-if (process.env.NODE_ENV !== 'production') {
-  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(to, key, fromVal);
-    } else if (
-      toVal !== fromVal &&
-      isPlainObject(toVal) &&
-      isPlainObject(fromVal)
-    ) {
-      mergeData(toVal, fromVal);
-    }
-  }
-  return to
-}
-
-/**
- * Data
- */
-function mergeDataOrFn (
-  parentVal,
-  childVal,
-  vm
-) {
-  if (!vm) {
-    // in a Vue.extend merge, both should be functions
-    if (!childVal) {
-      return parentVal
-    }
-    if (!parentVal) {
-      return childVal
-    }
-    // when parentVal & childVal are both present,
-    // we need to return a function that returns the
-    // merged result of both functions... no need to
-    // check if parentVal is a function here because
-    // it has to be a function to pass previous merges.
-    return function mergedDataFn () {
-      return mergeData(
-        typeof childVal === 'function' ? childVal.call(this, this) : childVal,
-        typeof parentVal === 'function' ? parentVal.call(this, this) : parentVal
-      )
-    }
-  } else {
-    return function mergedInstanceDataFn () {
-      // instance merge
-      var instanceData = typeof childVal === 'function'
-        ? childVal.call(vm, vm)
-        : childVal;
-      var defaultData = typeof parentVal === 'function'
-        ? parentVal.call(vm, vm)
-        : parentVal;
-      if (instanceData) {
-        return mergeData(instanceData, defaultData)
-      } else {
-        return defaultData
-      }
-    }
-  }
-}
-
-strats.data = function (
-  parentVal,
-  childVal,
-  vm
-) {
-  if (!vm) {
-    if (childVal && typeof childVal !== 'function') {
-      process.env.NODE_ENV !== 'production' && warn(
-        'The "data" option should be a function ' +
-        'that returns a per-instance value in component ' +
-        'definitions.',
-        vm
-      );
-
-      return parentVal
-    }
-    return mergeDataOrFn(parentVal, childVal)
-  }
-
-  return mergeDataOrFn(parentVal, childVal, vm)
-};
-
-/**
- * Hooks and props are merged as arrays.
- */
-function mergeHook (
-  parentVal,
-  childVal
-) {
-  var res = childVal
-    ? parentVal
-      ? parentVal.concat(childVal)
-      : Array.isArray(childVal)
-        ? childVal
-        : [childVal]
-    : parentVal;
-  return res
-    ? dedupeHooks(res)
-    : res
-}
-
-function dedupeHooks (hooks) {
-  var res = [];
-  for (var i = 0; i < hooks.length; i++) {
-    if (res.indexOf(hooks[i]) === -1) {
-      res.push(hooks[i]);
-    }
-  }
-  return res
-}
-
-LIFECYCLE_HOOKS.forEach(function (hook) {
-  strats[hook] = mergeHook;
-});
-
-/**
- * Assets
- *
- * When a vm is present (instance creation), we need to do
- * a three-way merge between constructor options, instance
- * options and parent options.
- */
-function mergeAssets (
-  parentVal,
-  childVal,
-  vm,
-  key
-) {
-  var res = Object.create(parentVal || null);
-  if (childVal) {
-    process.env.NODE_ENV !== 'production' && assertObjectType(key, childVal, vm);
-    return extend(res, childVal)
-  } else {
-    return res
-  }
-}
-
-ASSET_TYPES.forEach(function (type) {
-  strats[type + 's'] = mergeAssets;
-});
-
-/**
- * Watchers.
- *
- * Watchers hashes should not overwrite one
- * another, so we merge them as arrays.
- */
-strats.watch = function (
-  parentVal,
-  childVal,
-  vm,
-  key
-) {
-  // work around Firefox's Object.prototype.watch...
-  if (parentVal === nativeWatch) { parentVal = undefined; }
-  if (childVal === nativeWatch) { childVal = undefined; }
-  /* istanbul ignore if */
-  if (!childVal) { return Object.create(parentVal || null) }
-  if (process.env.NODE_ENV !== 'production') {
-    assertObjectType(key, childVal, vm);
-  }
-  if (!parentVal) { return childVal }
-  var ret = {};
-  extend(ret, parentVal);
-  for (var key$1 in childVal) {
-    var parent = ret[key$1];
-    var child = childVal[key$1];
-    if (parent && !Array.isArray(parent)) {
-      parent = [parent];
-    }
-    ret[key$1] = parent
-      ? parent.concat(child)
-      : Array.isArray(child) ? child : [child];
-  }
-  return ret
-};
-
-/**
- * Other object hashes.
- */
-strats.props =
-strats.methods =
-strats.inject =
-strats.computed = function (
-  parentVal,
-  childVal,
-  vm,
-  key
-) {
-  if (childVal && process.env.NODE_ENV !== 'production') {
-    assertObjectType(key, childVal, vm);
-  }
-  if (!parentVal) { return childVal }
-  var ret = Object.create(null);
-  extend(ret, parentVal);
-  if (childVal) { extend(ret, childVal); }
-  return ret
-};
-strats.provide = mergeDataOrFn;
-
-/**
- * Default strategy.
- */
-var defaultStrat = function (parentVal, childVal) {
-  return childVal === undefined
-    ? parentVal
-    : childVal
-};
-
-/**
- * Validate component names
- */
-function checkComponents (options) {
-  for (var key in options.components) {
-    validateComponentName(key);
-  }
-}
-
-function validateComponentName (name) {
-  if (!/^[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.'
-    );
-  }
-  if (isBuiltInTag(name) || config.isReservedTag(name)) {
-    warn(
-      'Do not use built-in or reserved HTML elements as component ' +
-      'id: ' + name
-    );
-  }
-}
-
-/**
- * Ensure all props option syntax are normalized into the
- * Object-based format.
- */
-function normalizeProps (options, vm) {
-  var props = options.props;
-  if (!props) { return }
-  var res = {};
-  var i, val, name;
-  if (Array.isArray(props)) {
-    i = props.length;
-    while (i--) {
-      val = props[i];
-      if (typeof val === 'string') {
-        name = camelize(val);
-        res[name] = { type: null };
-      } else if (process.env.NODE_ENV !== 'production') {
-        warn('props must be strings when using array syntax.');
-      }
-    }
-  } else if (isPlainObject(props)) {
-    for (var key in props) {
-      val = props[key];
-      name = camelize(key);
-      res[name] = isPlainObject(val)
-        ? val
-        : { type: val };
-    }
-  } else if (process.env.NODE_ENV !== 'production') {
-    warn(
-      "Invalid value for option \"props\": expected an Array or an Object, " +
-      "but got " + (toRawType(props)) + ".",
-      vm
-    );
-  }
-  options.props = res;
-}
-
-/**
- * Normalize all injections into Object-based format
- */
-function normalizeInject (options, vm) {
-  var inject = options.inject;
-  if (!inject) { return }
-  var normalized = options.inject = {};
-  if (Array.isArray(inject)) {
-    for (var i = 0; i < inject.length; i++) {
-      normalized[inject[i]] = { from: inject[i] };
-    }
-  } else if (isPlainObject(inject)) {
-    for (var key in inject) {
-      var val = inject[key];
-      normalized[key] = isPlainObject(val)
-        ? extend({ from: key }, val)
-        : { from: val };
-    }
-  } else if (process.env.NODE_ENV !== 'production') {
-    warn(
-      "Invalid value for option \"inject\": expected an Array or an Object, " +
-      "but got " + (toRawType(inject)) + ".",
-      vm
-    );
-  }
-}
-
-/**
- * Normalize raw function directives into object format.
- */
-function normalizeDirectives (options) {
-  var dirs = options.directives;
-  if (dirs) {
-    for (var key in dirs) {
-      var def = dirs[key];
-      if (typeof def === 'function') {
-        dirs[key] = { bind: def, update: def };
-      }
-    }
-  }
-}
-
-function assertObjectType (name, value, vm) {
-  if (!isPlainObject(value)) {
-    warn(
-      "Invalid value for option \"" + name + "\": expected an Object, " +
-      "but got " + (toRawType(value)) + ".",
-      vm
-    );
-  }
-}
-
-/**
- * Merge two option objects into a new one.
- * Core utility used in both instantiation and inheritance.
- */
-function mergeOptions (
-  parent,
-  child,
-  vm
-) {
-  if (process.env.NODE_ENV !== 'production') {
-    checkComponents(child);
-  }
-
-  if (typeof child === 'function') {
-    child = child.options;
-  }
-
-  normalizeProps(child, vm);
-  normalizeInject(child, vm);
-  normalizeDirectives(child);
-
-  // Apply extends and mixins on the child options,
-  // but only if it is a raw options object that isn't
-  // the result of another mergeOptions call.
-  // Only merged options has the _base property.
-  if (!child._base) {
-    if (child.extends) {
-      parent = mergeOptions(parent, child.extends, vm);
-    }
-    if (child.mixins) {
-      for (var i = 0, l = child.mixins.length; i < l; i++) {
-        parent = mergeOptions(parent, child.mixins[i], vm);
-      }
-    }
-  }
-
-  var options = {};
-  var key;
-  for (key in parent) {
-    mergeField(key);
-  }
-  for (key in child) {
-    if (!hasOwn(parent, key)) {
-      mergeField(key);
-    }
-  }
-  function mergeField (key) {
-    var strat = strats[key] || defaultStrat;
-    options[key] = strat(parent[key], child[key], vm, key);
-  }
-  return options
-}
-
-/**
- * Resolve an asset.
- * This function is used because child instances need access
- * to assets defined in its ancestor chain.
- */
-function resolveAsset (
-  options,
-  type,
-  id,
-  warnMissing
-) {
-  /* istanbul ignore if */
-  if (typeof id !== 'string') {
-    return
-  }
-  var assets = options[type];
-  // check local registration variations first
-  if (hasOwn(assets, id)) { return assets[id] }
-  var camelizedId = camelize(id);
-  if (hasOwn(assets, camelizedId)) { return assets[camelizedId] }
-  var PascalCaseId = capitalize(camelizedId);
-  if (hasOwn(assets, PascalCaseId)) { return assets[PascalCaseId] }
-  // fallback to prototype chain
-  var res = assets[id] || assets[camelizedId] || assets[PascalCaseId];
-  if (process.env.NODE_ENV !== '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];
-  // boolean casting
-  var booleanIndex = getTypeIndex(Boolean, prop.type);
-  if (booleanIndex > -1) {
-    if (absent && !hasOwn(prop, 'default')) {
-      value = false;
-    } else if (value === '' || value === hyphenate(key)) {
-      // only cast empty string / same name to boolean if
-      // boolean has higher priority
-      var stringIndex = getTypeIndex(String, prop.type);
-      if (stringIndex < 0 || booleanIndex < stringIndex) {
-        value = true;
-      }
-    }
-  }
-  // check default value
-  if (value === undefined) {
-    value = getPropDefaultValue(vm, prop, key);
-    // since the default value is a fresh copy,
-    // make sure to observe it.
-    var prevShouldObserve = shouldObserve;
-    toggleObserving(true);
-    observe(value);
-    toggleObserving(prevShouldObserve);
-  }
-  if (
-    process.env.NODE_ENV !== 'production' &&
-    // skip validation for weex recycle-list child component props
-    !(false)
-  ) {
-    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 (process.env.NODE_ENV !== 'production' && isObject(def)) {
-    warn(
-      'Invalid default value for prop "' + key + '": ' +
-      'Props with type Object/Array must use a factory function ' +
-      'to return the default value.',
-      vm
-    );
-  }
-  // the raw prop value was also undefined from previous render,
-  // return previous default value to avoid unnecessary watcher trigger
-  if (vm && vm.$options.propsData &&
-    vm.$options.propsData[key] === undefined &&
-    vm._props[key] !== undefined
-  ) {
-    return vm._props[key]
-  }
-  // call factory function for non-Function types
-  // a value is Function if its prototype is function even across different execution context
-  return typeof def === 'function' && getType(prop.type) !== 'Function'
-    ? def.call(vm)
-    : def
-}
-
-/**
- * Assert whether a prop is valid.
- */
-function assertProp (
-  prop,
-  name,
-  value,
-  vm,
-  absent
-) {
-  if (prop.required && absent) {
-    warn(
-      'Missing required prop: "' + name + '"',
-      vm
-    );
-    return
-  }
-  if (value == null && !prop.required) {
-    return
-  }
-  var type = prop.type;
-  var valid = !type || type === true;
-  var expectedTypes = [];
-  if (type) {
-    if (!Array.isArray(type)) {
-      type = [type];
-    }
-    for (var i = 0; i < type.length && !valid; i++) {
-      var assertedType = assertType(value, type[i]);
-      expectedTypes.push(assertedType.expectedType || '');
-      valid = assertedType.valid;
-    }
-  }
-
-  if (!valid) {
-    warn(
-      getInvalidTypeMessage(name, value, expectedTypes),
-      vm
-    );
-    return
-  }
-  var validator = prop.validator;
-  if (validator) {
-    if (!validator(value)) {
-      warn(
-        'Invalid prop: custom validator check failed for prop "' + name + '".',
-        vm
-      );
-    }
-  }
-}
-
-var simpleCheckRE = /^(String|Number|Boolean|Function|Symbol)$/;
-
-function assertType (value, type) {
-  var valid;
-  var expectedType = getType(type);
-  if (simpleCheckRE.test(expectedType)) {
-    var t = typeof value;
-    valid = t === expectedType.toLowerCase();
-    // for primitive wrapper objects
-    if (!valid && t === 'object') {
-      valid = value instanceof type;
-    }
-  } else if (expectedType === 'Object') {
-    valid = isPlainObject(value);
-  } else if (expectedType === 'Array') {
-    valid = Array.isArray(value);
-  } else {
-    valid = value instanceof type;
-  }
-  return {
-    valid: valid,
-    expectedType: expectedType
-  }
-}
-
-/**
- * Use function string name to check built-in types,
- * because a simple equality check will fail when running
- * across different vms / iframes.
- */
-function getType (fn) {
-  var match = fn && fn.toString().match(/^\s*function (\w+)/);
-  return match ? match[1] : ''
-}
-
-function isSameType (a, b) {
-  return getType(a) === getType(b)
-}
-
-function getTypeIndex (type, expectedTypes) {
-  if (!Array.isArray(expectedTypes)) {
-    return isSameType(expectedTypes, type) ? 0 : -1
-  }
-  for (var i = 0, len = expectedTypes.length; i < len; i++) {
-    if (isSameType(expectedTypes[i], type)) {
-      return i
-    }
-  }
-  return -1
-}
-
-function getInvalidTypeMessage (name, value, expectedTypes) {
-  var message = "Invalid prop: type check failed for prop \"" + name + "\"." +
-    " Expected " + (expectedTypes.map(capitalize).join(', '));
-  var expectedType = expectedTypes[0];
-  var receivedType = toRawType(value);
-  var expectedValue = styleValue(value, expectedType);
-  var receivedValue = styleValue(value, receivedType);
-  // check if we need to specify expected value
-  if (expectedTypes.length === 1 &&
-      isExplicable(expectedType) &&
-      !isBoolean(expectedType, receivedType)) {
-    message += " with value " + expectedValue;
-  }
-  message += ", got " + receivedType + " ";
-  // check if we need to specify received value
-  if (isExplicable(receivedType)) {
-    message += "with value " + receivedValue + ".";
-  }
-  return message
-}
-
-function styleValue (value, type) {
-  if (type === 'String') {
-    return ("\"" + value + "\"")
-  } else if (type === 'Number') {
-    return ("" + (Number(value)))
-  } else {
-    return ("" + value)
-  }
-}
-
-function isExplicable (value) {
-  var explicitTypes = ['string', 'number', 'boolean'];
-  return explicitTypes.some(function (elem) { return value.toLowerCase() === elem; })
-}
-
-function isBoolean () {
-  var args = [], len = arguments.length;
-  while ( len-- ) args[ len ] = arguments[ len ];
-
-  return args.some(function (elem) { return elem.toLowerCase() === 'boolean'; })
-}
-
-/*  */
-
-function handleError (err, vm, info) {
-  if (vm) {
-    var cur = vm;
-    while ((cur = cur.$parent)) {
-      var hooks = cur.$options.errorCaptured;
-      if (hooks) {
-        for (var i = 0; i < hooks.length; i++) {
-          try {
-            var capture = hooks[i].call(cur, err, vm, info) === false;
-            if (capture) { return }
-          } catch (e) {
-            globalHandleError(e, cur, 'errorCaptured hook');
-          }
-        }
-      }
-    }
-  }
-  globalHandleError(err, vm, info);
-}
-
-function globalHandleError (err, vm, info) {
-  if (config.errorHandler) {
-    try {
-      return config.errorHandler.call(null, err, vm, info)
-    } catch (e) {
-      logError(e, null, 'config.errorHandler');
-    }
-  }
-  logError(err, vm, info);
-}
-
-function logError (err, vm, info) {
-  if (process.env.NODE_ENV !== 'production') {
-    warn(("Error in " + info + ": \"" + (err.toString()) + "\""), vm);
-  }
-  /* istanbul ignore else */
-  if ((inBrowser || inWeex) && typeof console !== 'undefined') {
-    console.error(err);
-  } else {
-    throw err
-  }
-}
-
-/*  */
-
-var callbacks = [];
-var pending = false;
-
-function flushCallbacks () {
-  pending = false;
-  var copies = callbacks.slice(0);
-  callbacks.length = 0;
-  for (var i = 0; i < copies.length; i++) {
-    copies[i]();
-  }
-}
-
-// Here we have async deferring wrappers using both microtasks and (macro) tasks.
-// In < 2.4 we used microtasks everywhere, but there are some scenarios where
-// microtasks have too high a priority and fire in between supposedly
-// sequential events (e.g. #4521, #6690) or even between bubbling of the same
-// event (#6566). However, using (macro) tasks everywhere also has subtle problems
-// when state is changed right before repaint (e.g. #6813, out-in transitions).
-// Here we use microtask by default, but expose a way to force (macro) task when
-// needed (e.g. in event handlers attached by v-on).
-var microTimerFunc;
-var macroTimerFunc;
-var useMacroTask = false;
-
-// Determine (macro) task defer implementation.
-// Technically setImmediate should be the ideal choice, but it's only available
-// in IE. The only polyfill that consistently queues the callback after all DOM
-// events triggered in the same loop is by using MessageChannel.
-/* istanbul ignore if */
-if (typeof setImmediate !== 'undefined' && isNative(setImmediate)) {
-  macroTimerFunc = function () {
-    setImmediate(flushCallbacks);
-  };
-} else if (typeof MessageChannel !== 'undefined' && (
-  isNative(MessageChannel) ||
-  // PhantomJS
-  MessageChannel.toString() === '[object MessageChannelConstructor]'
-)) {
-  var channel = new MessageChannel();
-  var port = channel.port2;
-  channel.port1.onmessage = flushCallbacks;
-  macroTimerFunc = function () {
-    port.postMessage(1);
-  };
-} else {
-  /* istanbul ignore next */
-  macroTimerFunc = function () {
-    setTimeout(flushCallbacks, 0);
-  };
-}
-
-// Determine microtask defer implementation.
-/* istanbul ignore next, $flow-disable-line */
-if (typeof Promise !== 'undefined' && isNative(Promise)) {
-  var p = Promise.resolve();
-  microTimerFunc = function () {
-    p.then(flushCallbacks);
-    // in problematic UIWebViews, Promise.then doesn't completely break, but
-    // it can get stuck in a weird state where callbacks are pushed into the
-    // microtask queue but the queue isn't being flushed, until the browser
-    // needs to do some other work, e.g. handle a timer. Therefore we can
-    // "force" the microtask queue to be flushed by adding an empty timer.
-    if (isIOS) { setTimeout(noop); }
-  };
-} else {
-  // fallback to macro
-  microTimerFunc = macroTimerFunc;
-}
-
-/**
- * Wrap a function so that if any code inside triggers state change,
- * the changes are queued using a (macro) task instead of a microtask.
- */
-function withMacroTask (fn) {
-  return fn._withTask || (fn._withTask = function () {
-    useMacroTask = true;
-    try {
-      return fn.apply(null, arguments)
-    } finally {
-      useMacroTask = false;
-    }
-  })
-}
-
-function nextTick (cb, ctx) {
-  var _resolve;
-  callbacks.push(function () {
-    if (cb) {
-      try {
-        cb.call(ctx);
-      } catch (e) {
-        handleError(e, ctx, 'nextTick');
-      }
-    } else if (_resolve) {
-      _resolve(ctx);
-    }
-  });
-  if (!pending) {
-    pending = true;
-    if (useMacroTask) {
-      macroTimerFunc();
-    } else {
-      microTimerFunc();
-    }
-  }
-  // $flow-disable-line
-  if (!cb && typeof Promise !== 'undefined') {
-    return new Promise(function (resolve) {
-      _resolve = resolve;
-    })
-  }
-}
-
-/*  */
-
-/* not type checking this file because flow doesn't play well with Proxy */
-
-var initProxy;
-
-if (process.env.NODE_ENV !== 'production') {
-  var allowedGlobals = makeMap(
-    'Infinity,undefined,NaN,isFinite,isNaN,' +
-    'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' +
-    'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,' +
-    'require' // for Webpack/Browserify
-  );
-
-  var warnNonPresent = function (target, key) {
-    warn(
-      "Property or method \"" + key + "\" is not defined on the instance but " +
-      'referenced during render. Make sure that this property is reactive, ' +
-      'either in the data option, or for class-based components, by ' +
-      'initializing the property. ' +
-      'See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.',
-      target
-    );
-  };
-
-  var warnReservedPrefix = function (target, key) {
-    warn(
-      "Property \"" + key + "\" must be accessed with \"$data." + key + "\" because " +
-      'properties starting with "$" or "_" are not proxied in the Vue instance to ' +
-      'prevent conflicts with Vue internals' +
-      'See: https://vuejs.org/v2/api/#data',
-      target
-    );
-  };
-
-  var hasProxy =
-    typeof Proxy !== 'undefined' && isNative(Proxy);
-
-  if (hasProxy) {
-    var isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta,exact');
-    config.keyCodes = new Proxy(config.keyCodes, {
-      set: function set (target, key, value) {
-        if (isBuiltInModifier(key)) {
-          warn(("Avoid overwriting built-in modifier in config.keyCodes: ." + key));
-          return false
-        } else {
-          target[key] = value;
-          return true
-        }
-      }
-    });
-  }
-
-  var hasHandler = {
-    has: function has (target, key) {
-      var has = key in target;
-      var isAllowed = allowedGlobals(key) ||
-        (typeof key === 'string' && key.charAt(0) === '_' && !(key in target.$data));
-      if (!has && !isAllowed) {
-        if (key in target.$data) { warnReservedPrefix(target, key); }
-        else { warnNonPresent(target, key); }
-      }
-      return has || !isAllowed
-    }
-  };
-
-  var getHandler = {
-    get: function get (target, key) {
-      if (typeof key === 'string' && !(key in target)) {
-        if (key in target.$data) { warnReservedPrefix(target, key); }
-        else { warnNonPresent(target, key); }
-      }
-      return target[key]
-    }
-  };
-
-  initProxy = function initProxy (vm) {
-    if (hasProxy) {
-      // determine which proxy handler to use
-      var options = vm.$options;
-      var handlers = options.render && options.render._withStripped
-        ? getHandler
-        : hasHandler;
-      vm._renderProxy = new Proxy(vm, handlers);
-    } else {
-      vm._renderProxy = vm;
-    }
-  };
-}
-
-/*  */
-
-var seenObjects = new _Set();
-
-/**
- * Recursively traverse an object to evoke all converted
- * getters, so that every nested property inside the object
- * is collected as a "deep" dependency.
- */
-function traverse (val) {
-  _traverse(val, seenObjects);
-  seenObjects.clear();
-}
-
-function _traverse (val, seen) {
-  var i, keys;
-  var isA = Array.isArray(val);
-  if ((!isA && !isObject(val)) || Object.isFrozen(val) || val instanceof VNode) {
-    return
-  }
-  if (val.__ob__) {
-    var depId = val.__ob__.dep.id;
-    if (seen.has(depId)) {
-      return
-    }
-    seen.add(depId);
-  }
-  if (isA) {
-    i = val.length;
-    while (i--) { _traverse(val[i], seen); }
-  } else {
-    keys = Object.keys(val);
-    i = keys.length;
-    while (i--) { _traverse(val[keys[i]], seen); }
-  }
-}
-
-var mark;
-var measure;
-
-if (process.env.NODE_ENV !== 'production') {
-  var perf = inBrowser && window.performance;
-  /* istanbul ignore if */
-  if (
-    perf &&
-    perf.mark &&
-    perf.measure &&
-    perf.clearMarks &&
-    perf.clearMeasures
-  ) {
-    mark = function (tag) { return perf.mark(tag); };
-    measure = function (name, startTag, endTag) {
-      perf.measure(name, startTag, endTag);
-      perf.clearMarks(startTag);
-      perf.clearMarks(endTag);
-      perf.clearMeasures(name);
-    };
-  }
-}
-
-/*  */
-
-var normalizeEvent = cached(function (name) {
-  var passive = name.charAt(0) === '&';
-  name = passive ? name.slice(1) : name;
-  var once$$1 = name.charAt(0) === '~'; // Prefixed last, checked first
-  name = once$$1 ? name.slice(1) : name;
-  var capture = name.charAt(0) === '!';
-  name = capture ? name.slice(1) : name;
-  return {
-    name: name,
-    once: once$$1,
-    capture: capture,
-    passive: passive
-  }
-});
-
-function createFnInvoker (fns) {
-  function invoker () {
-    var arguments$1 = arguments;
-
-    var fns = invoker.fns;
-    if (Array.isArray(fns)) {
-      var cloned = fns.slice();
-      for (var i = 0; i < cloned.length; i++) {
-        cloned[i].apply(null, arguments$1);
-      }
-    } else {
-      // return handler return value for single handlers
-      return fns.apply(null, arguments)
-    }
-  }
-  invoker.fns = fns;
-  return invoker
-}
-
-function updateListeners (
-  on,
-  oldOn,
-  add,
-  remove$$1,
-  createOnceHandler,
-  vm
-) {
-  var name, def$$1, cur, old, event;
-  for (name in on) {
-    def$$1 = cur = on[name];
-    old = oldOn[name];
-    event = normalizeEvent(name);
-    if (isUndef(cur)) {
-      process.env.NODE_ENV !== 'production' && warn(
-        "Invalid handler for event \"" + (event.name) + "\": got " + String(cur),
-        vm
-      );
-    } else if (isUndef(old)) {
-      if (isUndef(cur.fns)) {
-        cur = on[name] = createFnInvoker(cur);
-      }
-      if (isTrue(event.once)) {
-        cur = on[name] = createOnceHandler(event.name, cur, event.capture);
-      }
-      add(event.name, cur, event.capture, event.passive, event.params);
-    } else if (cur !== old) {
-      old.fns = cur;
-      on[name] = old;
-    }
-  }
-  for (name in oldOn) {
-    if (isUndef(on[name])) {
-      event = normalizeEvent(name);
-      remove$$1(event.name, oldOn[name], event.capture);
-    }
-  }
-}
-
-/*  */
-
-function mergeVNodeHook (def, hookKey, hook) {
-  if (def instanceof VNode) {
-    def = def.data.hook || (def.data.hook = {});
-  }
-  var invoker;
-  var oldHook = def[hookKey];
-
-  function wrappedHook () {
-    hook.apply(this, arguments);
-    // important: remove merged hook to ensure it's called only once
-    // and prevent memory leak
-    remove(invoker.fns, wrappedHook);
-  }
-
-  if (isUndef(oldHook)) {
-    // no existing hook
-    invoker = createFnInvoker([wrappedHook]);
-  } else {
-    /* istanbul ignore if */
-    if (isDef(oldHook.fns) && isTrue(oldHook.merged)) {
-      // already a merged invoker
-      invoker = oldHook;
-      invoker.fns.push(wrappedHook);
-    } else {
-      // existing plain hook
-      invoker = createFnInvoker([oldHook, wrappedHook]);
-    }
-  }
-
-  invoker.merged = true;
-  def[hookKey] = invoker;
-}
-
-/*  */
-
-function extractPropsFromVNodeData (
-  data,
-  Ctor,
-  tag
-) {
-  // we are only extracting raw values here.
-  // validation and default values are handled in the child
-  // component itself.
-  var propOptions = Ctor.options.props;
-  if (isUndef(propOptions)) {
-    return
-  }
-  var res = {};
-  var attrs = data.attrs;
-  var props = data.props;
-  if (isDef(attrs) || isDef(props)) {
-    for (var key in propOptions) {
-      var altKey = hyphenate(key);
-      if (process.env.NODE_ENV !== 'production') {
-        var keyInLowerCase = key.toLowerCase();
-        if (
-          key !== keyInLowerCase &&
-          attrs && hasOwn(attrs, keyInLowerCase)
-        ) {
-          tip(
-            "Prop \"" + keyInLowerCase + "\" is passed to component " +
-            (formatComponentName(tag || Ctor)) + ", but the declared prop name is" +
-            " \"" + key + "\". " +
-            "Note that HTML attributes are case-insensitive and camelCased " +
-            "props need to use their kebab-case equivalents when using in-DOM " +
-            "templates. You should probably use \"" + altKey + "\" instead of \"" + key + "\"."
-          );
-        }
-      }
-      checkProp(res, props, key, altKey, true) ||
-      checkProp(res, attrs, key, altKey, false);
-    }
-  }
-  return res
-}
-
-function checkProp (
-  res,
-  hash,
-  key,
-  altKey,
-  preserve
-) {
-  if (isDef(hash)) {
-    if (hasOwn(hash, key)) {
-      res[key] = hash[key];
-      if (!preserve) {
-        delete hash[key];
-      }
-      return true
-    } else if (hasOwn(hash, altKey)) {
-      res[key] = hash[altKey];
-      if (!preserve) {
-        delete hash[altKey];
-      }
-      return true
-    }
-  }
-  return false
-}
-
-/*  */
-
-// The template compiler attempts to minimize the need for normalization by
-// statically analyzing the template at compile time.
-//
-// For plain HTML markup, normalization can be completely skipped because the
-// generated render function is guaranteed to return Array<VNode>. There are
-// two cases where extra normalization is needed:
-
-// 1. When the children contains components - because a functional component
-// may return an Array instead of a single root. In this case, just a simple
-// normalization is needed - if any child is an Array, we flatten the whole
-// thing with Array.prototype.concat. It is guaranteed to be only 1-level deep
-// because functional components already normalize their own children.
-function simpleNormalizeChildren (children) {
-  for (var i = 0; i < children.length; i++) {
-    if (Array.isArray(children[i])) {
-      return Array.prototype.concat.apply([], children)
-    }
-  }
-  return children
-}
-
-// 2. When the children contains constructs that always generated nested Arrays,
-// e.g. <template>, <slot>, v-for, or when the children is provided by user
-// with hand-written render functions / JSX. In such cases a full normalization
-// is needed to cater to all possible types of children values.
-function normalizeChildren (children) {
-  return isPrimitive(children)
-    ? [createTextVNode(children)]
-    : Array.isArray(children)
-      ? normalizeArrayChildren(children)
-      : undefined
-}
-
-function isTextNode (node) {
-  return isDef(node) && isDef(node.text) && isFalse(node.isComment)
-}
-
-function normalizeArrayChildren (children, nestedIndex) {
-  var res = [];
-  var i, c, lastIndex, last;
-  for (i = 0; i < children.length; i++) {
-    c = children[i];
-    if (isUndef(c) || typeof c === 'boolean') { continue }
-    lastIndex = res.length - 1;
-    last = res[lastIndex];
-    //  nested
-    if (Array.isArray(c)) {
-      if (c.length > 0) {
-        c = normalizeArrayChildren(c, ((nestedIndex || '') + "_" + i));
-        // merge adjacent text nodes
-        if (isTextNode(c[0]) && isTextNode(last)) {
-          res[lastIndex] = createTextVNode(last.text + (c[0]).text);
-          c.shift();
-        }
-        res.push.apply(res, c);
-      }
-    } else if (isPrimitive(c)) {
-      if (isTextNode(last)) {
-        // merge adjacent text nodes
-        // this is necessary for SSR hydration because text nodes are
-        // essentially merged when rendered to HTML strings
-        res[lastIndex] = createTextVNode(last.text + c);
-      } else if (c !== '') {
-        // convert primitive to vnode
-        res.push(createTextVNode(c));
-      }
-    } else {
-      if (isTextNode(c) && isTextNode(last)) {
-        // merge adjacent text nodes
-        res[lastIndex] = createTextVNode(last.text + c.text);
-      } else {
-        // default key for nested array children (likely generated by v-for)
-        if (isTrue(children._isVList) &&
-          isDef(c.tag) &&
-          isUndef(c.key) &&
-          isDef(nestedIndex)) {
-          c.key = "__vlist" + nestedIndex + "_" + i + "__";
-        }
-        res.push(c);
-      }
-    }
-  }
-  return res
-}
-
-/*  */
-
-function ensureCtor (comp, base) {
-  if (
-    comp.__esModule ||
-    (hasSymbol && comp[Symbol.toStringTag] === 'Module')
-  ) {
-    comp = comp.default;
-  }
-  return isObject(comp)
-    ? base.extend(comp)
-    : comp
-}
-
-function createAsyncPlaceholder (
-  factory,
-  data,
-  context,
-  children,
-  tag
-) {
-  var node = createEmptyVNode();
-  node.asyncFactory = factory;
-  node.asyncMeta = { data: data, context: context, children: children, tag: tag };
-  return node
-}
-
-function resolveAsyncComponent (
-  factory,
-  baseCtor,
-  context
-) {
-  if (isTrue(factory.error) && isDef(factory.errorComp)) {
-    return factory.errorComp
-  }
-
-  if (isDef(factory.resolved)) {
-    return factory.resolved
-  }
-
-  if (isTrue(factory.loading) && isDef(factory.loadingComp)) {
-    return factory.loadingComp
-  }
-
-  if (isDef(factory.contexts)) {
-    // already pending
-    factory.contexts.push(context);
-  } else {
-    var contexts = factory.contexts = [context];
-    var sync = true;
-
-    var forceRender = function (renderCompleted) {
-      for (var i = 0, l = contexts.length; i < l; i++) {
-        contexts[i].$forceUpdate();
-      }
-
-      if (renderCompleted) {
-        contexts.length = 0;
-      }
-    };
-
-    var resolve = once(function (res) {
-      // cache resolved
-      factory.resolved = ensureCtor(res, baseCtor);
-      // invoke callbacks only if this is not a synchronous resolve
-      // (async resolves are shimmed as synchronous during SSR)
-      if (!sync) {
-        forceRender(true);
-      } else {
-        contexts.length = 0;
-      }
-    });
-
-    var reject = once(function (reason) {
-      process.env.NODE_ENV !== 'production' && warn(
-        "Failed to resolve async component: " + (String(factory)) +
-        (reason ? ("\nReason: " + reason) : '')
-      );
-      if (isDef(factory.errorComp)) {
-        factory.error = true;
-        forceRender(true);
-      }
-    });
-
-    var res = factory(resolve, reject);
-
-    if (isObject(res)) {
-      if (typeof res.then === 'function') {
-        // () => Promise
-        if (isUndef(factory.resolved)) {
-          res.then(resolve, reject);
-        }
-      } else if (isDef(res.component) && typeof res.component.then === 'function') {
-        res.component.then(resolve, reject);
-
-        if (isDef(res.error)) {
-          factory.errorComp = ensureCtor(res.error, baseCtor);
-        }
-
-        if (isDef(res.loading)) {
-          factory.loadingComp = ensureCtor(res.loading, baseCtor);
-          if (res.delay === 0) {
-            factory.loading = true;
-          } else {
-            setTimeout(function () {
-              if (isUndef(factory.resolved) && isUndef(factory.error)) {
-                factory.loading = true;
-                forceRender(false);
-              }
-            }, res.delay || 200);
-          }
-        }
-
-        if (isDef(res.timeout)) {
-          setTimeout(function () {
-            if (isUndef(factory.resolved)) {
-              reject(
-                process.env.NODE_ENV !== 'production'
-                  ? ("timeout (" + (res.timeout) + "ms)")
-                  : null
-              );
-            }
-          }, res.timeout);
-        }
-      }
-    }
-
-    sync = false;
-    // return in case resolved synchronously
-    return factory.loading
-      ? factory.loadingComp
-      : factory.resolved
-  }
-}
-
-/*  */
-
-function isAsyncPlaceholder (node) {
-  return node.isComment && node.asyncFactory
-}
-
-/*  */
-
-function getFirstComponentChild (children) {
-  if (Array.isArray(children)) {
-    for (var i = 0; i < children.length; i++) {
-      var c = children[i];
-      if (isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) {
-        return c
-      }
-    }
-  }
-}
-
-/*  */
-
-/*  */
-
-function initEvents (vm) {
-  vm._events = Object.create(null);
-  vm._hasHookEvent = false;
-  // init parent attached events
-  var listeners = vm.$options._parentListeners;
-  if (listeners) {
-    updateComponentListeners(vm, listeners);
-  }
-}
-
-var target;
-
-function add (event, fn) {
-  target.$on(event, fn);
-}
-
-function remove$1 (event, fn) {
-  target.$off(event, fn);
-}
-
-function createOnceHandler (event, fn) {
-  var _target = target;
-  return function onceHandler () {
-    var res = fn.apply(null, arguments);
-    if (res !== null) {
-      _target.$off(event, onceHandler);
-    }
-  }
-}
-
-function updateComponentListeners (
-  vm,
-  listeners,
-  oldListeners
-) {
-  target = vm;
-  updateListeners(listeners, oldListeners || {}, add, remove$1, createOnceHandler, vm);
-  target = undefined;
-}
-
-function eventsMixin (Vue) {
-  var hookRE = /^hook:/;
-  Vue.prototype.$on = function (event, fn) {
-    var vm = this;
-    if (Array.isArray(event)) {
-      for (var i = 0, l = event.length; i < l; i++) {
-        vm.$on(event[i], fn);
-      }
-    } else {
-      (vm._events[event] || (vm._events[event] = [])).push(fn);
-      // optimize hook:event cost by using a boolean flag marked at registration
-      // instead of a hash lookup
-      if (hookRE.test(event)) {
-        vm._hasHookEvent = true;
-      }
-    }
-    return vm
-  };
-
-  Vue.prototype.$once = function (event, fn) {
-    var vm = this;
-    function on () {
-      vm.$off(event, on);
-      fn.apply(vm, arguments);
-    }
-    on.fn = fn;
-    vm.$on(event, on);
-    return vm
-  };
-
-  Vue.prototype.$off = function (event, fn) {
-    var vm = this;
-    // all
-    if (!arguments.length) {
-      vm._events = Object.create(null);
-      return vm
-    }
-    // array of events
-    if (Array.isArray(event)) {
-      for (var i$1 = 0, l = event.length; i$1 < l; i$1++) {
-        vm.$off(event[i$1], fn);
-      }
-      return vm
-    }
-    // specific event
-    var cbs = vm._events[event];
-    if (!cbs) {
-      return vm
-    }
-    if (!fn) {
-      vm._events[event] = null;
-      return vm
-    }
-    // specific handler
-    var cb;
-    var i = cbs.length;
-    while (i--) {
-      cb = cbs[i];
-      if (cb === fn || cb.fn === fn) {
-        cbs.splice(i, 1);
-        break
-      }
-    }
-    return vm
-  };
-
-  Vue.prototype.$emit = function (event) {
-    var vm = this;
-    if (process.env.NODE_ENV !== 'production') {
-      var lowerCaseEvent = event.toLowerCase();
-      if (lowerCaseEvent !== event && vm._events[lowerCaseEvent]) {
-        tip(
-          "Event \"" + lowerCaseEvent + "\" is emitted in component " +
-          (formatComponentName(vm)) + " but the handler is registered for \"" + event + "\". " +
-          "Note that HTML attributes are case-insensitive and you cannot use " +
-          "v-on to listen to camelCase events when using in-DOM templates. " +
-          "You should probably use \"" + (hyphenate(event)) + "\" instead of \"" + event + "\"."
-        );
-      }
-    }
-    var cbs = vm._events[event];
-    if (cbs) {
-      cbs = cbs.length > 1 ? toArray(cbs) : cbs;
-      var args = toArray(arguments, 1);
-      for (var i = 0, l = cbs.length; i < l; i++) {
-        try {
-          cbs[i].apply(vm, args);
-        } catch (e) {
-          handleError(e, vm, ("event handler for \"" + event + "\""));
-        }
-      }
-    }
-    return vm
-  };
-}
-
-/*  */
-
-
-
-/**
- * Runtime helper for resolving raw children VNodes into a slot object.
- */
-function resolveSlots (
-  children,
-  context
-) {
-  var slots = {};
-  if (!children) {
-    return slots
-  }
-  for (var i = 0, l = children.length; i < l; i++) {
-    var child = children[i];
-    var data = child.data;
-    // remove slot attribute if the node is resolved as a Vue slot node
-    if (data && data.attrs && data.attrs.slot) {
-      delete data.attrs.slot;
-    }
-    // named slots should only be respected if the vnode was rendered in the
-    // same context.
-    if ((child.context === context || child.fnContext === context) &&
-      data && data.slot != null
-    ) {
-      var name = data.slot;
-      var slot = (slots[name] || (slots[name] = []));
-      if (child.tag === 'template') {
-        slot.push.apply(slot, child.children || []);
-      } else {
-        slot.push(child);
-      }
-    } else {
-      (slots.default || (slots.default = [])).push(child);
-    }
-  }
-  // ignore slots that contains only whitespace
-  for (var name$1 in slots) {
-    if (slots[name$1].every(isWhitespace)) {
-      delete slots[name$1];
-    }
-  }
-  return slots
-}
-
-function isWhitespace (node) {
-  return (node.isComment && !node.asyncFactory) || node.text === ' '
-}
-
-function resolveScopedSlots (
-  fns, // see flow/vnode
-  res
-) {
-  res = res || {};
-  for (var i = 0; i < fns.length; i++) {
-    if (Array.isArray(fns[i])) {
-      resolveScopedSlots(fns[i], res);
-    } else {
-      res[fns[i].key] = fns[i].fn;
-    }
-  }
-  return res
-}
-
-/*  */
-
-var activeInstance = null;
-var isUpdatingChildComponent = false;
-
-function setActiveInstance(vm) {
-  var prevActiveInstance = activeInstance;
-  activeInstance = vm;
-  return function () {
-    activeInstance = prevActiveInstance;
-  }
-}
-
-function initLifecycle (vm) {
-  var options = vm.$options;
-
-  // locate first non-abstract parent
-  var parent = options.parent;
-  if (parent && !options.abstract) {
-    while (parent.$options.abstract && parent.$parent) {
-      parent = parent.$parent;
-    }
-    parent.$children.push(vm);
-  }
-
-  vm.$parent = parent;
-  vm.$root = parent ? parent.$root : vm;
-
-  vm.$children = [];
-  vm.$refs = {};
-
-  vm._watcher = null;
-  vm._inactive = null;
-  vm._directInactive = false;
-  vm._isMounted = false;
-  vm._isDestroyed = false;
-  vm._isBeingDestroyed = false;
-}
-
-function lifecycleMixin (Vue) {
-  Vue.prototype._update = function (vnode, hydrating) {
-    var vm = this;
-    var prevEl = vm.$el;
-    var prevVnode = vm._vnode;
-    var restoreActiveInstance = setActiveInstance(vm);
-    vm._vnode = vnode;
-    // Vue.prototype.__patch__ is injected in entry points
-    // based on the rendering backend used.
-    if (!prevVnode) {
-      // initial render
-      vm.$el = vm.__patch__(vm.$el, vnode, hydrating, false /* removeOnly */);
-    } else {
-      // updates
-      vm.$el = vm.__patch__(prevVnode, vnode);
-    }
-    restoreActiveInstance();
-    // update __vue__ reference
-    if (prevEl) {
-      prevEl.__vue__ = null;
-    }
-    if (vm.$el) {
-      vm.$el.__vue__ = vm;
-    }
-    // if parent is an HOC, update its $el as well
-    if (vm.$vnode && vm.$parent && vm.$vnode === vm.$parent._vnode) {
-      vm.$parent.$el = vm.$el;
-    }
-    // updated hook is called by the scheduler to ensure that children are
-    // updated in a parent's updated hook.
-  };
-
-  Vue.prototype.$forceUpdate = function () {
-    var vm = this;
-    if (vm._watcher) {
-      vm._watcher.update();
-    }
-  };
-
-  Vue.prototype.$destroy = function () {
-    var vm = this;
-    if (vm._isBeingDestroyed) {
-      return
-    }
-    callHook(vm, 'beforeDestroy');
-    vm._isBeingDestroyed = true;
-    // remove self from parent
-    var parent = vm.$parent;
-    if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) {
-      remove(parent.$children, vm);
-    }
-    // teardown watchers
-    if (vm._watcher) {
-      vm._watcher.teardown();
-    }
-    var i = vm._watchers.length;
-    while (i--) {
-      vm._watchers[i].teardown();
-    }
-    // remove reference from data ob
-    // frozen object may not have observer.
-    if (vm._data.__ob__) {
-      vm._data.__ob__.vmCount--;
-    }
-    // call the last hook...
-    vm._isDestroyed = true;
-    // invoke destroy hooks on current rendered tree
-    vm.__patch__(vm._vnode, null);
-    // fire destroyed hook
-    callHook(vm, 'destroyed');
-    // turn off all instance listeners.
-    vm.$off();
-    // remove __vue__ reference
-    if (vm.$el) {
-      vm.$el.__vue__ = null;
-    }
-    // release circular reference (#6759)
-    if (vm.$vnode) {
-      vm.$vnode.parent = null;
-    }
-  };
-}
-
-function mountComponent (
-  vm,
-  el,
-  hydrating
-) {
-  vm.$el = el;
-  if (!vm.$options.render) {
-    vm.$options.render = createEmptyVNode;
-    if (process.env.NODE_ENV !== 'production') {
-      /* istanbul ignore if */
-      if ((vm.$options.template && vm.$options.template.charAt(0) !== '#') ||
-        vm.$options.el || el) {
-        warn(
-          'You are using the runtime-only build of Vue where the template ' +
-          'compiler is not available. Either pre-compile the templates into ' +
-          'render functions, or use the compiler-included build.',
-          vm
-        );
-      } else {
-        warn(
-          'Failed to mount component: template or render function not defined.',
-          vm
-        );
-      }
-    }
-  }
-  callHook(vm, 'beforeMount');
-
-  var updateComponent;
-  /* istanbul ignore if */
-  if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
-    updateComponent = function () {
-      var name = vm._name;
-      var id = vm._uid;
-      var startTag = "vue-perf-start:" + id;
-      var endTag = "vue-perf-end:" + id;
-
-      mark(startTag);
-      var vnode = vm._render();
-      mark(endTag);
-      measure(("vue " + name + " render"), startTag, endTag);
-
-      mark(startTag);
-      vm._update(vnode, hydrating);
-      mark(endTag);
-      measure(("vue " + name + " patch"), startTag, endTag);
-    };
-  } else {
-    updateComponent = function () {
-      vm._update(vm._render(), hydrating);
-    };
-  }
-
-  // we set this to vm._watcher inside the watcher's constructor
-  // since the watcher's initial patch may call $forceUpdate (e.g. inside child
-  // component's mounted hook), which relies on vm._watcher being already defined
-  new Watcher(vm, updateComponent, noop, {
-    before: function before () {
-      if (vm._isMounted && !vm._isDestroyed) {
-        callHook(vm, 'beforeUpdate');
-      }
-    }
-  }, true /* isRenderWatcher */);
-  hydrating = false;
-
-  // manually mounted instance, call mounted on self
-  // mounted is called for render-created child components in its inserted hook
-  if (vm.$vnode == null) {
-    vm._isMounted = true;
-    callHook(vm, 'mounted');
-  }
-  return vm
-}
-
-function updateChildComponent (
-  vm,
-  propsData,
-  listeners,
-  parentVnode,
-  renderChildren
-) {
-  if (process.env.NODE_ENV !== 'production') {
-    isUpdatingChildComponent = true;
-  }
-
-  // determine whether component has slot children
-  // we need to do this before overwriting $options._renderChildren
-  var hasChildren = !!(
-    renderChildren ||               // has new static slots
-    vm.$options._renderChildren ||  // has old static slots
-    parentVnode.data.scopedSlots || // has new scoped slots
-    vm.$scopedSlots !== emptyObject // has old scoped slots
-  );
-
-  vm.$options._parentVnode = parentVnode;
-  vm.$vnode = parentVnode; // update vm's placeholder node without re-render
-
-  if (vm._vnode) { // update child tree's parent
-    vm._vnode.parent = parentVnode;
-  }
-  vm.$options._renderChildren = renderChildren;
-
-  // update $attrs and $listeners hash
-  // these are also reactive so they may trigger child update if the child
-  // used them during render
-  vm.$attrs = parentVnode.data.attrs || emptyObject;
-  vm.$listeners = listeners || emptyObject;
-
-  // update props
-  if (propsData && vm.$options.props) {
-    toggleObserving(false);
-    var props = vm._props;
-    var propKeys = vm.$options._propKeys || [];
-    for (var i = 0; i < propKeys.length; i++) {
-      var key = propKeys[i];
-      var propOptions = vm.$options.props; // wtf flow?
-      props[key] = validateProp(key, propOptions, propsData, vm);
-    }
-    toggleObserving(true);
-    // keep a copy of raw propsData
-    vm.$options.propsData = propsData;
-  }
-
-  // update listeners
-  listeners = listeners || emptyObject;
-  var oldListeners = vm.$options._parentListeners;
-  vm.$options._parentListeners = listeners;
-  updateComponentListeners(vm, listeners, oldListeners);
-
-  // resolve slots + force update if has children
-  if (hasChildren) {
-    vm.$slots = resolveSlots(renderChildren, parentVnode.context);
-    vm.$forceUpdate();
-  }
-
-  if (process.env.NODE_ENV !== 'production') {
-    isUpdatingChildComponent = false;
-  }
-}
-
-function isInInactiveTree (vm) {
-  while (vm && (vm = vm.$parent)) {
-    if (vm._inactive) { return true }
-  }
-  return false
-}
-
-function activateChildComponent (vm, direct) {
-  if (direct) {
-    vm._directInactive = false;
-    if (isInInactiveTree(vm)) {
-      return
-    }
-  } else if (vm._directInactive) {
-    return
-  }
-  if (vm._inactive || vm._inactive === null) {
-    vm._inactive = false;
-    for (var i = 0; i < vm.$children.length; i++) {
-      activateChildComponent(vm.$children[i]);
-    }
-    callHook(vm, 'activated');
-  }
-}
-
-function deactivateChildComponent (vm, direct) {
-  if (direct) {
-    vm._directInactive = true;
-    if (isInInactiveTree(vm)) {
-      return
-    }
-  }
-  if (!vm._inactive) {
-    vm._inactive = true;
-    for (var i = 0; i < vm.$children.length; i++) {
-      deactivateChildComponent(vm.$children[i]);
-    }
-    callHook(vm, 'deactivated');
-  }
-}
-
-function callHook (vm, hook) {
-  // #7573 disable dep collection when invoking lifecycle hooks
-  pushTarget();
-  var handlers = vm.$options[hook];
-  if (handlers) {
-    for (var i = 0, j = handlers.length; i < j; i++) {
-      try {
-        handlers[i].call(vm);
-      } catch (e) {
-        handleError(e, vm, (hook + " hook"));
-      }
-    }
-  }
-  if (vm._hasHookEvent) {
-    vm.$emit('hook:' + hook);
-  }
-  popTarget();
-}
-
-/*  */
-
-var MAX_UPDATE_COUNT = 100;
-
-var queue = [];
-var activatedChildren = [];
-var has = {};
-var circular = {};
-var waiting = false;
-var flushing = false;
-var index = 0;
-
-/**
- * Reset the scheduler's state.
- */
-function resetSchedulerState () {
-  index = queue.length = activatedChildren.length = 0;
-  has = {};
-  if (process.env.NODE_ENV !== 'production') {
-    circular = {};
-  }
-  waiting = flushing = false;
-}
-
-/**
- * Flush both queues and run the watchers.
- */
-function flushSchedulerQueue () {
-  flushing = true;
-  var watcher, id;
-
-  // Sort queue before flush.
-  // This ensures that:
-  // 1. Components are updated from parent to child. (because parent is always
-  //    created before the child)
-  // 2. A component's user watchers are run before its render watcher (because
-  //    user watchers are created before the render watcher)
-  // 3. If a component is destroyed during a parent component's watcher run,
-  //    its watchers can be skipped.
-  queue.sort(function (a, b) { return a.id - b.id; });
-
-  // do not cache length because more watchers might be pushed
-  // as we run existing watchers
-  for (index = 0; index < queue.length; index++) {
-    watcher = queue[index];
-    if (watcher.before) {
-      watcher.before();
-    }
-    id = watcher.id;
-    has[id] = null;
-    watcher.run();
-    // in dev build, check and stop circular updates.
-    if (process.env.NODE_ENV !== 'production' && has[id] != null) {
-      circular[id] = (circular[id] || 0) + 1;
-      if (circular[id] > MAX_UPDATE_COUNT) {
-        warn(
-          'You may have an infinite update loop ' + (
-            watcher.user
-              ? ("in watcher with expression \"" + (watcher.expression) + "\"")
-              : "in a component render function."
-          ),
-          watcher.vm
-        );
-        break
-      }
-    }
-  }
-
-  // keep copies of post queues before resetting state
-  var activatedQueue = activatedChildren.slice();
-  var updatedQueue = queue.slice();
-
-  resetSchedulerState();
-
-  // call component updated and activated hooks
-  callActivatedHooks(activatedQueue);
-  callUpdatedHooks(updatedQueue);
-
-  // devtool hook
-  /* istanbul ignore if */
-  if (devtools && config.devtools) {
-    devtools.emit('flush');
-  }
-}
-
-function callUpdatedHooks (queue) {
-  var i = queue.length;
-  while (i--) {
-    var watcher = queue[i];
-    var vm = watcher.vm;
-    if (vm._watcher === watcher && vm._isMounted && !vm._isDestroyed) {
-      callHook(vm, 'updated');
-    }
-  }
-}
-
-/**
- * Queue a kept-alive component that was activated during patch.
- * The queue will be processed after the entire tree has been patched.
- */
-function queueActivatedComponent (vm) {
-  // setting _inactive to false here so that a render function can
-  // rely on checking whether it's in an inactive tree (e.g. router-view)
-  vm._inactive = false;
-  activatedChildren.push(vm);
-}
-
-function callActivatedHooks (queue) {
-  for (var i = 0; i < queue.length; i++) {
-    queue[i]._inactive = true;
-    activateChildComponent(queue[i], true /* true */);
-  }
-}
-
-/**
- * Push a watcher into the watcher queue.
- * Jobs with duplicate IDs will be skipped unless it's
- * pushed when the queue is being flushed.
- */
-function queueWatcher (watcher) {
-  var id = watcher.id;
-  if (has[id] == null) {
-    has[id] = true;
-    if (!flushing) {
-      queue.push(watcher);
-    } else {
-      // if already flushing, splice the watcher based on its id
-      // if already past its id, it will be run next immediately.
-      var i = queue.length - 1;
-      while (i > index && queue[i].id > watcher.id) {
-        i--;
-      }
-      queue.splice(i + 1, 0, watcher);
-    }
-    // queue the flush
-    if (!waiting) {
-      waiting = true;
-
-      if (process.env.NODE_ENV !== 'production' && !config.async) {
-        flushSchedulerQueue();
-        return
-      }
-      nextTick(flushSchedulerQueue);
-    }
-  }
-}
-
-/*  */
-
-
-
-var uid$1 = 0;
-
-/**
- * A watcher parses an expression, collects dependencies,
- * and fires callback when the expression value changes.
- * This is used for both the $watch() api and directives.
- */
-var Watcher = function Watcher (
-  vm,
-  expOrFn,
-  cb,
-  options,
-  isRenderWatcher
-) {
-  this.vm = vm;
-  if (isRenderWatcher) {
-    vm._watcher = this;
-  }
-  vm._watchers.push(this);
-  // options
-  if (options) {
-    this.deep = !!options.deep;
-    this.user = !!options.user;
-    this.lazy = !!options.lazy;
-    this.sync = !!options.sync;
-    this.before = options.before;
-  } else {
-    this.deep = this.user = this.lazy = this.sync = false;
-  }
-  this.cb = cb;
-  this.id = ++uid$1; // 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 = process.env.NODE_ENV !== 'production'
-    ? expOrFn.toString()
-    : '';
-  // parse expression for getter
-  if (typeof expOrFn === 'function') {
-    this.getter = expOrFn;
-  } else {
-    this.getter = parsePath(expOrFn);
-    if (!this.getter) {
-      this.getter = noop;
-      process.env.NODE_ENV !== '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;
-  var vm = this.vm;
-  try {
-    value = this.getter.call(vm, vm);
-  } catch (e) {
-    if (this.user) {
-      handleError(e, vm, ("getter for watcher \"" + (this.expression) + "\""));
-    } else {
-      throw e
-    }
-  } finally {
-    // "touch" every property so they are all tracked as
-    // dependencies for deep watching
-    if (this.deep) {
-      traverse(value);
-    }
-    popTarget();
-    this.cleanupDeps();
-  }
-  return value
-};
-
-/**
- * Add a dependency to this directive.
- */
-Watcher.prototype.addDep = function addDep (dep) {
-  var id = dep.id;
-  if (!this.newDepIds.has(id)) {
-    this.newDepIds.add(id);
-    this.newDeps.push(dep);
-    if (!this.depIds.has(id)) {
-      dep.addSub(this);
-    }
-  }
-};
-
-/**
- * Clean up for dependency collection.
- */
-Watcher.prototype.cleanupDeps = function cleanupDeps () {
-  var i = this.deps.length;
-  while (i--) {
-    var dep = this.deps[i];
-    if (!this.newDepIds.has(dep.id)) {
-      dep.removeSub(this);
-    }
-  }
-  var tmp = this.depIds;
-  this.depIds = this.newDepIds;
-  this.newDepIds = tmp;
-  this.newDepIds.clear();
-  tmp = this.deps;
-  this.deps = this.newDeps;
-  this.newDeps = tmp;
-  this.newDeps.length = 0;
-};
-
-/**
- * Subscriber interface.
- * Will be called when a dependency changes.
- */
-Watcher.prototype.update = function update () {
-  /* istanbul ignore else */
-  if (this.lazy) {
-    this.dirty = true;
-  } else if (this.sync) {
-    this.run();
-  } else {
-    queueWatcher(this);
-  }
-};
-
-/**
- * Scheduler job interface.
- * Will be called by the scheduler.
- */
-Watcher.prototype.run = function run () {
-  if (this.active) {
-    var value = this.get();
-    if (
-      value !== this.value ||
-      // Deep watchers and watchers on Object/Arrays should fire even
-      // when the value is the same, because the value may
-      // have mutated.
-      isObject(value) ||
-      this.deep
-    ) {
-      // set new value
-      var oldValue = this.value;
-      this.value = value;
-      if (this.user) {
-        try {
-          this.cb.call(this.vm, value, oldValue);
-        } catch (e) {
-          handleError(e, this.vm, ("callback for watcher \"" + (this.expression) + "\""));
-        }
-      } else {
-        this.cb.call(this.vm, value, oldValue);
-      }
-    }
-  }
-};
-
-/**
- * Evaluate the value of the watcher.
- * This only gets called for lazy watchers.
- */
-Watcher.prototype.evaluate = function evaluate () {
-  this.value = this.get();
-  this.dirty = false;
-};
-
-/**
- * Depend on all deps collected by this watcher.
- */
-Watcher.prototype.depend = function depend () {
-  var i = this.deps.length;
-  while (i--) {
-    this.deps[i].depend();
-  }
-};
-
-/**
- * Remove self from all dependencies' subscriber list.
- */
-Watcher.prototype.teardown = function teardown () {
-  if (this.active) {
-    // remove self from vm's watcher list
-    // this is a somewhat expensive operation so we skip it
-    // if the vm is being destroyed.
-    if (!this.vm._isBeingDestroyed) {
-      remove(this.vm._watchers, this);
-    }
-    var i = this.deps.length;
-    while (i--) {
-      this.deps[i].removeSub(this);
-    }
-    this.active = false;
-  }
-};
-
-/*  */
-
-var sharedPropertyDefinition = {
-  enumerable: true,
-  configurable: true,
-  get: noop,
-  set: noop
-};
-
-function proxy (target, sourceKey, key) {
-  sharedPropertyDefinition.get = function proxyGetter () {
-    return this[sourceKey][key]
-  };
-  sharedPropertyDefinition.set = function proxySetter (val) {
-    this[sourceKey][key] = val;
-  };
-  Object.defineProperty(target, key, sharedPropertyDefinition);
-}
-
-function initState (vm) {
-  vm._watchers = [];
-  var opts = vm.$options;
-  if (opts.props) { initProps(vm, opts.props); }
-  if (opts.methods) { initMethods(vm, opts.methods); }
-  if (opts.data) {
-    initData(vm);
-  } else {
-    observe(vm._data = {}, true /* asRootData */);
-  }
-  if (opts.computed) { initComputed(vm, opts.computed); }
-  if (opts.watch && opts.watch !== nativeWatch) {
-    initWatch(vm, opts.watch);
-  }
-}
-
-function initProps (vm, propsOptions) {
-  var propsData = vm.$options.propsData || {};
-  var props = vm._props = {};
-  // cache prop keys so that future props updates can iterate using Array
-  // instead of dynamic object key enumeration.
-  var keys = vm.$options._propKeys = [];
-  var isRoot = !vm.$parent;
-  // root instance props should be converted
-  if (!isRoot) {
-    toggleObserving(false);
-  }
-  var loop = function ( key ) {
-    keys.push(key);
-    var value = validateProp(key, propsOptions, propsData, vm);
-    /* istanbul ignore else */
-    if (process.env.NODE_ENV !== 'production') {
-      var hyphenatedKey = hyphenate(key);
-      if (isReservedAttribute(hyphenatedKey) ||
-          config.isReservedAttr(hyphenatedKey)) {
-        warn(
-          ("\"" + hyphenatedKey + "\" is a reserved attribute and cannot be used as component prop."),
-          vm
-        );
-      }
-      defineReactive$$1(props, key, value, function () {
-        if (!isRoot && !isUpdatingChildComponent) {
-          warn(
-            "Avoid mutating a prop directly since the value will be " +
-            "overwritten whenever the parent component re-renders. " +
-            "Instead, use a data or computed property based on the prop's " +
-            "value. Prop being mutated: \"" + key + "\"",
-            vm
-          );
-        }
-      });
-    } else {
-      defineReactive$$1(props, key, value);
-    }
-    // static props are already proxied on the component's prototype
-    // during Vue.extend(). We only need to proxy props defined at
-    // instantiation here.
-    if (!(key in vm)) {
-      proxy(vm, "_props", key);
-    }
-  };
-
-  for (var key in propsOptions) loop( key );
-  toggleObserving(true);
-}
-
-function initData (vm) {
-  var data = vm.$options.data;
-  data = vm._data = typeof data === 'function'
-    ? getData(data, vm)
-    : data || {};
-  if (!isPlainObject(data)) {
-    data = {};
-    process.env.NODE_ENV !== 'production' && warn(
-      'data functions should return an object:\n' +
-      'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function',
-      vm
-    );
-  }
-  // proxy data on instance
-  var keys = Object.keys(data);
-  var props = vm.$options.props;
-  var methods = vm.$options.methods;
-  var i = keys.length;
-  while (i--) {
-    var key = keys[i];
-    if (process.env.NODE_ENV !== 'production') {
-      if (methods && hasOwn(methods, key)) {
-        warn(
-          ("Method \"" + key + "\" has already been defined as a data property."),
-          vm
-        );
-      }
-    }
-    if (props && hasOwn(props, key)) {
-      process.env.NODE_ENV !== 'production' && warn(
-        "The data property \"" + key + "\" is already declared as a prop. " +
-        "Use prop default value instead.",
-        vm
-      );
-    } else if (!isReserved(key)) {
-      proxy(vm, "_data", key);
-    }
-  }
-  // observe data
-  observe(data, true /* asRootData */);
-}
-
-function getData (data, vm) {
-  // #7573 disable dep collection when invoking data getters
-  pushTarget();
-  try {
-    return data.call(vm, vm)
-  } catch (e) {
-    handleError(e, vm, "data()");
-    return {}
-  } finally {
-    popTarget();
-  }
-}
-
-var computedWatcherOptions = { lazy: true };
-
-function initComputed (vm, computed) {
-  // $flow-disable-line
-  var watchers = vm._computedWatchers = Object.create(null);
-  // computed properties are just getters during SSR
-  var isSSR = isServerRendering();
-
-  for (var key in computed) {
-    var userDef = computed[key];
-    var getter = typeof userDef === 'function' ? userDef : userDef.get;
-    if (process.env.NODE_ENV !== 'production' && getter == null) {
-      warn(
-        ("Getter is missing for computed property \"" + key + "\"."),
-        vm
-      );
-    }
-
-    if (!isSSR) {
-      // create internal watcher for the computed property.
-      watchers[key] = new Watcher(
-        vm,
-        getter || noop,
-        noop,
-        computedWatcherOptions
-      );
-    }
-
-    // component-defined computed properties are already defined on the
-    // component prototype. We only need to define computed properties defined
-    // at instantiation here.
-    if (!(key in vm)) {
-      defineComputed(vm, key, userDef);
-    } else if (process.env.NODE_ENV !== 'production') {
-      if (key in vm.$data) {
-        warn(("The computed property \"" + key + "\" is already defined in data."), vm);
-      } else if (vm.$options.props && key in vm.$options.props) {
-        warn(("The computed property \"" + key + "\" is already defined as a prop."), vm);
-      }
-    }
-  }
-}
-
-function defineComputed (
-  target,
-  key,
-  userDef
-) {
-  var shouldCache = !isServerRendering();
-  if (typeof userDef === 'function') {
-    sharedPropertyDefinition.get = shouldCache
-      ? createComputedGetter(key)
-      : createGetterInvoker(userDef);
-    sharedPropertyDefinition.set = noop;
-  } else {
-    sharedPropertyDefinition.get = userDef.get
-      ? shouldCache && userDef.cache !== false
-        ? createComputedGetter(key)
-        : createGetterInvoker(userDef.get)
-      : noop;
-    sharedPropertyDefinition.set = userDef.set || noop;
-  }
-  if (process.env.NODE_ENV !== 'production' &&
-      sharedPropertyDefinition.set === noop) {
-    sharedPropertyDefinition.set = function () {
-      warn(
-        ("Computed property \"" + key + "\" was assigned to but it has no setter."),
-        this
-      );
-    };
-  }
-  Object.defineProperty(target, key, sharedPropertyDefinition);
-}
-
-function createComputedGetter (key) {
-  return function computedGetter () {
-    var watcher = this._computedWatchers && this._computedWatchers[key];
-    if (watcher) {
-      if (watcher.dirty) {
-        watcher.evaluate();
-      }
-      if (Dep.target) {
-        watcher.depend();
-      }
-      return watcher.value
-    }
-  }
-}
-
-function createGetterInvoker(fn) {
-  return function computedGetter () {
-    return fn.call(this, this)
-  }
-}
-
-function initMethods (vm, methods) {
-  var props = vm.$options.props;
-  for (var key in methods) {
-    if (process.env.NODE_ENV !== 'production') {
-      if (typeof methods[key] !== 'function') {
-        warn(
-          "Method \"" + key + "\" has type \"" + (typeof methods[key]) + "\" in the component definition. " +
-          "Did you reference the function correctly?",
-          vm
-        );
-      }
-      if (props && hasOwn(props, key)) {
-        warn(
-          ("Method \"" + key + "\" has already been defined as a prop."),
-          vm
-        );
-      }
-      if ((key in vm) && isReserved(key)) {
-        warn(
-          "Method \"" + key + "\" conflicts with an existing Vue instance method. " +
-          "Avoid defining component methods that start with _ or $."
-        );
-      }
-    }
-    vm[key] = typeof methods[key] !== 'function' ? noop : bind(methods[key], vm);
-  }
-}
-
-function initWatch (vm, watch) {
-  for (var key in watch) {
-    var handler = watch[key];
-    if (Array.isArray(handler)) {
-      for (var i = 0; i < handler.length; i++) {
-        createWatcher(vm, key, handler[i]);
-      }
-    } else {
-      createWatcher(vm, key, handler);
-    }
-  }
-}
-
-function createWatcher (
-  vm,
-  expOrFn,
-  handler,
-  options
-) {
-  if (isPlainObject(handler)) {
-    options = handler;
-    handler = handler.handler;
-  }
-  if (typeof handler === 'string') {
-    handler = vm[handler];
-  }
-  return vm.$watch(expOrFn, handler, options)
-}
-
-function stateMixin (Vue) {
-  // flow somehow has problems with directly declared definition object
-  // when using Object.defineProperty, so we have to procedurally build up
-  // the object here.
-  var dataDef = {};
-  dataDef.get = function () { return this._data };
-  var propsDef = {};
-  propsDef.get = function () { return this._props };
-  if (process.env.NODE_ENV !== 'production') {
-    dataDef.set = function () {
-      warn(
-        'Avoid replacing instance root $data. ' +
-        'Use nested data properties instead.',
-        this
-      );
-    };
-    propsDef.set = function () {
-      warn("$props is readonly.", this);
-    };
-  }
-  Object.defineProperty(Vue.prototype, '$data', dataDef);
-  Object.defineProperty(Vue.prototype, '$props', propsDef);
-
-  Vue.prototype.$set = set;
-  Vue.prototype.$delete = del;
-
-  Vue.prototype.$watch = function (
-    expOrFn,
-    cb,
-    options
-  ) {
-    var vm = this;
-    if (isPlainObject(cb)) {
-      return createWatcher(vm, expOrFn, cb, options)
-    }
-    options = options || {};
-    options.user = true;
-    var watcher = new Watcher(vm, expOrFn, cb, options);
-    if (options.immediate) {
-      try {
-        cb.call(vm, watcher.value);
-      } catch (error) {
-        handleError(error, vm, ("callback for immediate watcher \"" + (watcher.expression) + "\""));
-      }
-    }
-    return function unwatchFn () {
-      watcher.teardown();
-    }
-  };
-}
-
-/*  */
-
-function initProvide (vm) {
-  var provide = vm.$options.provide;
-  if (provide) {
-    vm._provided = typeof provide === 'function'
-      ? provide.call(vm)
-      : provide;
-  }
-}
-
-function initInjections (vm) {
-  var result = resolveInject(vm.$options.inject, vm);
-  if (result) {
-    toggleObserving(false);
-    Object.keys(result).forEach(function (key) {
-      /* istanbul ignore else */
-      if (process.env.NODE_ENV !== 'production') {
-        defineReactive$$1(vm, key, result[key], function () {
-          warn(
-            "Avoid mutating an injected value directly since the changes will be " +
-            "overwritten whenever the provided component re-renders. " +
-            "injection being mutated: \"" + key + "\"",
-            vm
-          );
-        });
-      } else {
-        defineReactive$$1(vm, key, result[key]);
-      }
-    });
-    toggleObserving(true);
-  }
-}
-
-function resolveInject (inject, vm) {
-  if (inject) {
-    // inject is :any because flow is not smart enough to figure out cached
-    var result = Object.create(null);
-    var keys = hasSymbol
-      ? Reflect.ownKeys(inject).filter(function (key) {
-        /* istanbul ignore next */
-        return Object.getOwnPropertyDescriptor(inject, key).enumerable
-      })
-      : Object.keys(inject);
-
-    for (var i = 0; i < keys.length; i++) {
-      var key = keys[i];
-      var provideKey = inject[key].from;
-      var source = vm;
-      while (source) {
-        if (source._provided && hasOwn(source._provided, provideKey)) {
-          result[key] = source._provided[provideKey];
-          break
-        }
-        source = source.$parent;
-      }
-      if (!source) {
-        if ('default' in inject[key]) {
-          var provideDefault = inject[key].default;
-          result[key] = typeof provideDefault === 'function'
-            ? provideDefault.call(vm)
-            : provideDefault;
-        } else if (process.env.NODE_ENV !== 'production') {
-          warn(("Injection \"" + key + "\" not found"), vm);
-        }
-      }
-    }
-    return result
-  }
-}
-
-/*  */
-
-/**
- * Runtime helper for rendering v-for lists.
- */
-function renderList (
-  val,
-  render
-) {
-  var ret, i, l, keys, key;
-  if (Array.isArray(val) || typeof val === 'string') {
-    ret = new Array(val.length);
-    for (i = 0, l = val.length; i < l; i++) {
-      ret[i] = render(val[i], i);
-    }
-  } else if (typeof val === 'number') {
-    ret = new Array(val);
-    for (i = 0; i < val; i++) {
-      ret[i] = render(i + 1, i);
-    }
-  } else if (isObject(val)) {
-    keys = Object.keys(val);
-    ret = new Array(keys.length);
-    for (i = 0, l = keys.length; i < l; i++) {
-      key = keys[i];
-      ret[i] = render(val[key], key, i);
-    }
-  }
-  if (!isDef(ret)) {
-    ret = [];
-  }
-  (ret)._isVList = true;
-  return ret
-}
-
-/*  */
-
-/**
- * Runtime helper for rendering <slot>
- */
-function renderSlot (
-  name,
-  fallback,
-  props,
-  bindObject
-) {
-  var scopedSlotFn = this.$scopedSlots[name];
-  var nodes;
-  if (scopedSlotFn) { // scoped slot
-    props = props || {};
-    if (bindObject) {
-      if (process.env.NODE_ENV !== 'production' && !isObject(bindObject)) {
-        warn(
-          'slot v-bind without argument expects an Object',
-          this
-        );
-      }
-      props = extend(extend({}, bindObject), props);
-    }
-    nodes = scopedSlotFn(props) || fallback;
-  } else {
-    nodes = this.$slots[name] || fallback;
-  }
-
-  var target = props && props.slot;
-  if (target) {
-    return this.$createElement('template', { slot: target }, nodes)
-  } else {
-    return nodes
-  }
-}
-
-/*  */
-
-/**
- * Runtime helper for resolving filters
- */
-function resolveFilter (id) {
-  return resolveAsset(this.$options, 'filters', id, true) || identity
-}
-
-/*  */
-
-function isKeyNotMatch (expect, actual) {
-  if (Array.isArray(expect)) {
-    return expect.indexOf(actual) === -1
-  } else {
-    return expect !== actual
-  }
-}
-
-/**
- * Runtime helper for checking keyCodes from config.
- * exposed as Vue.prototype._k
- * passing in eventKeyName as last argument separately for backwards compat
- */
-function checkKeyCodes (
-  eventKeyCode,
-  key,
-  builtInKeyCode,
-  eventKeyName,
-  builtInKeyName
-) {
-  var mappedKeyCode = config.keyCodes[key] || builtInKeyCode;
-  if (builtInKeyName && eventKeyName && !config.keyCodes[key]) {
-    return isKeyNotMatch(builtInKeyName, eventKeyName)
-  } else if (mappedKeyCode) {
-    return isKeyNotMatch(mappedKeyCode, eventKeyCode)
-  } else if (eventKeyName) {
-    return hyphenate(eventKeyName) !== key
-  }
-}
-
-/*  */
-
-/**
- * Runtime helper for merging v-bind="object" into a VNode's data.
- */
-function bindObjectProps (
-  data,
-  tag,
-  value,
-  asProp,
-  isSync
-) {
-  if (value) {
-    if (!isObject(value)) {
-      process.env.NODE_ENV !== 'production' && warn(
-        'v-bind without argument expects an Object or Array value',
-        this
-      );
-    } else {
-      if (Array.isArray(value)) {
-        value = toObject(value);
-      }
-      var hash;
-      var loop = function ( key ) {
-        if (
-          key === 'class' ||
-          key === 'style' ||
-          isReservedAttribute(key)
-        ) {
-          hash = data;
-        } else {
-          var type = data.attrs && data.attrs.type;
-          hash = asProp || config.mustUseProp(tag, type, key)
-            ? data.domProps || (data.domProps = {})
-            : data.attrs || (data.attrs = {});
-        }
-        var camelizedKey = camelize(key);
-        if (!(key in hash) && !(camelizedKey in hash)) {
-          hash[key] = value[key];
-
-          if (isSync) {
-            var on = data.on || (data.on = {});
-            on[("update:" + camelizedKey)] = function ($event) {
-              value[key] = $event;
-            };
-          }
-        }
-      };
-
-      for (var key in value) loop( key );
-    }
-  }
-  return data
-}
-
-/*  */
-
-/**
- * Runtime helper for rendering static trees.
- */
-function renderStatic (
-  index,
-  isInFor
-) {
-  var cached = this._staticTrees || (this._staticTrees = []);
-  var tree = cached[index];
-  // if has already-rendered static tree and not inside v-for,
-  // we can reuse the same tree.
-  if (tree && !isInFor) {
-    return tree
-  }
-  // otherwise, render a fresh tree.
-  tree = cached[index] = this.$options.staticRenderFns[index].call(
-    this._renderProxy,
-    null,
-    this // for render fns generated for functional component templates
-  );
-  markStatic(tree, ("__static__" + index), false);
-  return tree
-}
-
-/**
- * Runtime helper for v-once.
- * Effectively it means marking the node as static with a unique key.
- */
-function markOnce (
-  tree,
-  index,
-  key
-) {
-  markStatic(tree, ("__once__" + index + (key ? ("_" + key) : "")), true);
-  return tree
-}
-
-function markStatic (
-  tree,
-  key,
-  isOnce
-) {
-  if (Array.isArray(tree)) {
-    for (var i = 0; i < tree.length; i++) {
-      if (tree[i] && typeof tree[i] !== 'string') {
-        markStaticNode(tree[i], (key + "_" + i), isOnce);
-      }
-    }
-  } else {
-    markStaticNode(tree, key, isOnce);
-  }
-}
-
-function markStaticNode (node, key, isOnce) {
-  node.isStatic = true;
-  node.key = key;
-  node.isOnce = isOnce;
-}
-
-/*  */
-
-function bindObjectListeners (data, value) {
-  if (value) {
-    if (!isPlainObject(value)) {
-      process.env.NODE_ENV !== 'production' && warn(
-        'v-on without argument expects an Object value',
-        this
-      );
-    } else {
-      var on = data.on = data.on ? extend({}, data.on) : {};
-      for (var key in value) {
-        var existing = on[key];
-        var ours = value[key];
-        on[key] = existing ? [].concat(existing, ours) : ours;
-      }
-    }
-  }
-  return data
-}
-
-/*  */
-
-function installRenderHelpers (target) {
-  target._o = markOnce;
-  target._n = toNumber;
-  target._s = toString;
-  target._l = renderList;
-  target._t = renderSlot;
-  target._q = looseEqual;
-  target._i = looseIndexOf;
-  target._m = renderStatic;
-  target._f = resolveFilter;
-  target._k = checkKeyCodes;
-  target._b = bindObjectProps;
-  target._v = createTextVNode;
-  target._e = createEmptyVNode;
-  target._u = resolveScopedSlots;
-  target._g = bindObjectListeners;
-}
-
-/*  */
-
-function FunctionalRenderContext (
-  data,
-  props,
-  children,
-  parent,
-  Ctor
-) {
-  var options = Ctor.options;
-  // ensure the createElement function in functional components
-  // gets a unique context - this is necessary for correct named slot check
-  var contextVm;
-  if (hasOwn(parent, '_uid')) {
-    contextVm = Object.create(parent);
-    // $flow-disable-line
-    contextVm._original = parent;
-  } else {
-    // the context vm passed in is a functional context as well.
-    // in this case we want to make sure we are able to get a hold to the
-    // real context instance.
-    contextVm = parent;
-    // $flow-disable-line
-    parent = parent._original;
-  }
-  var isCompiled = isTrue(options._compiled);
-  var needNormalization = !isCompiled;
-
-  this.data = data;
-  this.props = props;
-  this.children = children;
-  this.parent = parent;
-  this.listeners = data.on || emptyObject;
-  this.injections = resolveInject(options.inject, parent);
-  this.slots = function () { return resolveSlots(children, parent); };
-
-  // support for compiled functional template
-  if (isCompiled) {
-    // exposing $options for renderStatic()
-    this.$options = options;
-    // pre-resolve slots for renderSlot()
-    this.$slots = this.slots();
-    this.$scopedSlots = data.scopedSlots || emptyObject;
-  }
-
-  if (options._scopeId) {
-    this._c = function (a, b, c, d) {
-      var vnode = createElement(contextVm, a, b, c, d, needNormalization);
-      if (vnode && !Array.isArray(vnode)) {
-        vnode.fnScopeId = options._scopeId;
-        vnode.fnContext = parent;
-      }
-      return vnode
-    };
-  } else {
-    this._c = function (a, b, c, d) { return createElement(contextVm, a, b, c, d, needNormalization); };
-  }
-}
-
-installRenderHelpers(FunctionalRenderContext.prototype);
-
-function createFunctionalComponent (
-  Ctor,
-  propsData,
-  data,
-  contextVm,
-  children
-) {
-  var options = Ctor.options;
-  var props = {};
-  var propOptions = options.props;
-  if (isDef(propOptions)) {
-    for (var key in propOptions) {
-      props[key] = validateProp(key, propOptions, propsData || emptyObject);
-    }
-  } else {
-    if (isDef(data.attrs)) { mergeProps(props, data.attrs); }
-    if (isDef(data.props)) { mergeProps(props, data.props); }
-  }
-
-  var renderContext = new FunctionalRenderContext(
-    data,
-    props,
-    children,
-    contextVm,
-    Ctor
-  );
-
-  var vnode = options.render.call(null, renderContext._c, renderContext);
-
-  if (vnode instanceof VNode) {
-    return cloneAndMarkFunctionalResult(vnode, data, renderContext.parent, options, renderContext)
-  } else if (Array.isArray(vnode)) {
-    var vnodes = normalizeChildren(vnode) || [];
-    var res = new Array(vnodes.length);
-    for (var i = 0; i < vnodes.length; i++) {
-      res[i] = cloneAndMarkFunctionalResult(vnodes[i], data, renderContext.parent, options, renderContext);
-    }
-    return res
-  }
-}
-
-function cloneAndMarkFunctionalResult (vnode, data, contextVm, options, renderContext) {
-  // #7817 clone node before setting fnContext, otherwise if the node is reused
-  // (e.g. it was from a cached normal slot) the fnContext causes named slots
-  // that should not be matched to match.
-  var clone = cloneVNode(vnode);
-  clone.fnContext = contextVm;
-  clone.fnOptions = options;
-  if (process.env.NODE_ENV !== 'production') {
-    (clone.devtoolsMeta = clone.devtoolsMeta || {}).renderContext = renderContext;
-  }
-  if (data.slot) {
-    (clone.data || (clone.data = {})).slot = data.slot;
-  }
-  return clone
-}
-
-function mergeProps (to, from) {
-  for (var key in from) {
-    to[camelize(key)] = from[key];
-  }
-}
-
-/*  */
-
-/*  */
-
-/*  */
-
-/*  */
-
-// inline hooks to be invoked on component VNodes during patch
-var componentVNodeHooks = {
-  init: function init (vnode, hydrating) {
-    if (
-      vnode.componentInstance &&
-      !vnode.componentInstance._isDestroyed &&
-      vnode.data.keepAlive
-    ) {
-      // kept-alive components, treat as a patch
-      var mountedNode = vnode; // work around flow
-      componentVNodeHooks.prepatch(mountedNode, mountedNode);
-    } else {
-      var child = vnode.componentInstance = createComponentInstanceForVnode(
-        vnode,
-        activeInstance
-      );
-      child.$mount(hydrating ? vnode.elm : undefined, hydrating);
-    }
-  },
-
-  prepatch: function prepatch (oldVnode, vnode) {
-    var options = vnode.componentOptions;
-    var child = vnode.componentInstance = oldVnode.componentInstance;
-    updateChildComponent(
-      child,
-      options.propsData, // updated props
-      options.listeners, // updated listeners
-      vnode, // new parent vnode
-      options.children // new children
-    );
-  },
-
-  insert: function insert (vnode) {
-    var context = vnode.context;
-    var componentInstance = vnode.componentInstance;
-    if (!componentInstance._isMounted) {
-      componentInstance._isMounted = true;
-      callHook(componentInstance, 'mounted');
-    }
-    if (vnode.data.keepAlive) {
-      if (context._isMounted) {
-        // vue-router#1212
-        // During updates, a kept-alive component's child components may
-        // change, so directly walking the tree here may call activated hooks
-        // on incorrect children. Instead we push them into a queue which will
-        // be processed after the whole patch process ended.
-        queueActivatedComponent(componentInstance);
-      } else {
-        activateChildComponent(componentInstance, true /* direct */);
-      }
-    }
-  },
-
-  destroy: function destroy (vnode) {
-    var componentInstance = vnode.componentInstance;
-    if (!componentInstance._isDestroyed) {
-      if (!vnode.data.keepAlive) {
-        componentInstance.$destroy();
-      } else {
-        deactivateChildComponent(componentInstance, true /* direct */);
-      }
-    }
-  }
-};
-
-var hooksToMerge = Object.keys(componentVNodeHooks);
-
-function createComponent (
-  Ctor,
-  data,
-  context,
-  children,
-  tag
-) {
-  if (isUndef(Ctor)) {
-    return
-  }
-
-  var baseCtor = context.$options._base;
-
-  // plain options object: turn it into a constructor
-  if (isObject(Ctor)) {
-    Ctor = baseCtor.extend(Ctor);
-  }
-
-  // if at this stage it's not a constructor or an async component factory,
-  // reject.
-  if (typeof Ctor !== 'function') {
-    if (process.env.NODE_ENV !== 'production') {
-      warn(("Invalid Component definition: " + (String(Ctor))), context);
-    }
-    return
-  }
-
-  // async component
-  var asyncFactory;
-  if (isUndef(Ctor.cid)) {
-    asyncFactory = Ctor;
-    Ctor = resolveAsyncComponent(asyncFactory, baseCtor, context);
-    if (Ctor === undefined) {
-      // return a placeholder node for async component, which is rendered
-      // as a comment node but preserves all the raw information for the node.
-      // the information will be used for async server-rendering and hydration.
-      return createAsyncPlaceholder(
-        asyncFactory,
-        data,
-        context,
-        children,
-        tag
-      )
-    }
-  }
-
-  data = data || {};
-
-  // resolve constructor options in case global mixins are applied after
-  // component constructor creation
-  resolveConstructorOptions(Ctor);
-
-  // transform component v-model data into props & events
-  if (isDef(data.model)) {
-    transformModel(Ctor.options, data);
-  }
-
-  // extract props
-  var propsData = extractPropsFromVNodeData(data, Ctor, tag);
-
-  // functional component
-  if (isTrue(Ctor.options.functional)) {
-    return createFunctionalComponent(Ctor, propsData, data, context, children)
-  }
-
-  // extract listeners, since these needs to be treated as
-  // child component listeners instead of DOM listeners
-  var listeners = data.on;
-  // replace with listeners with .native modifier
-  // so it gets processed during parent component patch.
-  data.on = data.nativeOn;
-
-  if (isTrue(Ctor.options.abstract)) {
-    // abstract components do not keep anything
-    // other than props & listeners & slot
-
-    // work around flow
-    var slot = data.slot;
-    data = {};
-    if (slot) {
-      data.slot = slot;
-    }
-  }
-
-  // install component management hooks onto the placeholder node
-  installComponentHooks(data);
-
-  // return a placeholder vnode
-  var name = Ctor.options.name || tag;
-  var vnode = new VNode(
-    ("vue-component-" + (Ctor.cid) + (name ? ("-" + name) : '')),
-    data, undefined, undefined, undefined, context,
-    { Ctor: Ctor, propsData: propsData, listeners: listeners, tag: tag, children: children },
-    asyncFactory
-  );
-
-  return vnode
-}
-
-function createComponentInstanceForVnode (
-  vnode, // we know it's MountedComponentVNode but flow doesn't
-  parent // activeInstance in lifecycle state
-) {
-  var options = {
-    _isComponent: true,
-    _parentVnode: vnode,
-    parent: parent
-  };
-  // check inline-template render functions
-  var inlineTemplate = vnode.data.inlineTemplate;
-  if (isDef(inlineTemplate)) {
-    options.render = inlineTemplate.render;
-    options.staticRenderFns = inlineTemplate.staticRenderFns;
-  }
-  return new vnode.componentOptions.Ctor(options)
-}
-
-function installComponentHooks (data) {
-  var hooks = data.hook || (data.hook = {});
-  for (var i = 0; i < hooksToMerge.length; i++) {
-    var key = hooksToMerge[i];
-    var existing = hooks[key];
-    var toMerge = componentVNodeHooks[key];
-    if (existing !== toMerge && !(existing && existing._merged)) {
-      hooks[key] = existing ? mergeHook$1(toMerge, existing) : toMerge;
-    }
-  }
-}
-
-function mergeHook$1 (f1, f2) {
-  var merged = function (a, b) {
-    // flow complains about extra args which is why we use any
-    f1(a, b);
-    f2(a, b);
-  };
-  merged._merged = true;
-  return merged
-}
-
-// transform component v-model info (value and callback) into
-// prop and event handler respectively.
-function transformModel (options, data) {
-  var prop = (options.model && options.model.prop) || 'value';
-  var event = (options.model && options.model.event) || 'input'
-  ;(data.props || (data.props = {}))[prop] = data.model.value;
-  var on = data.on || (data.on = {});
-  var existing = on[event];
-  var callback = data.model.callback;
-  if (isDef(existing)) {
-    if (
-      Array.isArray(existing)
-        ? existing.indexOf(callback) === -1
-        : existing !== callback
-    ) {
-      on[event] = [callback].concat(existing);
-    }
-  } else {
-    on[event] = callback;
-  }
-}
-
-/*  */
-
-var SIMPLE_NORMALIZE = 1;
-var ALWAYS_NORMALIZE = 2;
-
-// wrapper function for providing a more flexible interface
-// without getting yelled at by flow
-function createElement (
-  context,
-  tag,
-  data,
-  children,
-  normalizationType,
-  alwaysNormalize
-) {
-  if (Array.isArray(data) || isPrimitive(data)) {
-    normalizationType = children;
-    children = data;
-    data = undefined;
-  }
-  if (isTrue(alwaysNormalize)) {
-    normalizationType = ALWAYS_NORMALIZE;
-  }
-  return _createElement(context, tag, data, children, normalizationType)
-}
-
-function _createElement (
-  context,
-  tag,
-  data,
-  children,
-  normalizationType
-) {
-  if (isDef(data) && isDef((data).__ob__)) {
-    process.env.NODE_ENV !== '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()
-  }
-  // object syntax in v-bind
-  if (isDef(data) && isDef(data.is)) {
-    tag = data.is;
-  }
-  if (!tag) {
-    // in case of component :is set to falsy value
-    return createEmptyVNode()
-  }
-  // warn against non-primitive key
-  if (process.env.NODE_ENV !== 'production' &&
-    isDef(data) && isDef(data.key) && !isPrimitive(data.key)
-  ) {
-    {
-      warn(
-        'Avoid using non-primitive value as key, ' +
-        'use string/number value instead.',
-        context
-      );
-    }
-  }
-  // support single function children as default scoped slot
-  if (Array.isArray(children) &&
-    typeof children[0] === 'function'
-  ) {
-    data = data || {};
-    data.scopedSlots = { default: children[0] };
-    children.length = 0;
-  }
-  if (normalizationType === ALWAYS_NORMALIZE) {
-    children = normalizeChildren(children);
-  } else if (normalizationType === SIMPLE_NORMALIZE) {
-    children = simpleNormalizeChildren(children);
-  }
-  var vnode, ns;
-  if (typeof tag === 'string') {
-    var Ctor;
-    ns = (context.$vnode && context.$vnode.ns) || config.getTagNamespace(tag);
-    if (config.isReservedTag(tag)) {
-      // platform built-in elements
-      vnode = new VNode(
-        config.parsePlatformTagName(tag), data, children,
-        undefined, undefined, context
-      );
-    } else if ((!data || !data.pre) && isDef(Ctor = resolveAsset(context.$options, 'components', tag))) {
-      // component
-      vnode = createComponent(Ctor, data, context, children, tag);
-    } else {
-      // unknown or unlisted namespaced elements
-      // check at runtime because it may get assigned a namespace when its
-      // parent normalizes children
-      vnode = new VNode(
-        tag, data, children,
-        undefined, undefined, context
-      );
-    }
-  } else {
-    // direct component options / constructor
-    vnode = createComponent(tag, data, context, children);
-  }
-  if (Array.isArray(vnode)) {
-    return vnode
-  } else if (isDef(vnode)) {
-    if (isDef(ns)) { applyNS(vnode, ns); }
-    if (isDef(data)) { registerDeepBindings(data); }
-    return vnode
-  } else {
-    return createEmptyVNode()
-  }
-}
-
-function applyNS (vnode, ns, force) {
-  vnode.ns = ns;
-  if (vnode.tag === 'foreignObject') {
-    // use default namespace inside foreignObject
-    ns = undefined;
-    force = true;
-  }
-  if (isDef(vnode.children)) {
-    for (var i = 0, l = vnode.children.length; i < l; i++) {
-      var child = vnode.children[i];
-      if (isDef(child.tag) && (
-        isUndef(child.ns) || (isTrue(force) && child.tag !== 'svg'))) {
-        applyNS(child, ns, force);
-      }
-    }
-  }
-}
-
-// ref #5318
-// necessary to ensure parent re-render when deep bindings like :style and
-// :class are used on slot nodes
-function registerDeepBindings (data) {
-  if (isObject(data.style)) {
-    traverse(data.style);
-  }
-  if (isObject(data.class)) {
-    traverse(data.class);
-  }
-}
-
-/*  */
-
-function initRender (vm) {
-  vm._vnode = null; // the root of the child tree
-  vm._staticTrees = null; // v-once cached trees
-  var options = vm.$options;
-  var parentVnode = vm.$vnode = options._parentVnode; // the placeholder node in parent tree
-  var renderContext = parentVnode && parentVnode.context;
-  vm.$slots = resolveSlots(options._renderChildren, renderContext);
-  vm.$scopedSlots = emptyObject;
-  // bind the createElement fn to this instance
-  // so that we get proper render context inside it.
-  // args order: tag, data, children, normalizationType, alwaysNormalize
-  // internal version is used by render functions compiled from templates
-  vm._c = function (a, b, c, d) { return createElement(vm, a, b, c, d, false); };
-  // normalization is always applied for the public version, used in
-  // user-written render functions.
-  vm.$createElement = function (a, b, c, d) { return createElement(vm, a, b, c, d, true); };
-
-  // $attrs & $listeners are exposed for easier HOC creation.
-  // they need to be reactive so that HOCs using them are always updated
-  var parentData = parentVnode && parentVnode.data;
-
-  /* istanbul ignore else */
-  if (process.env.NODE_ENV !== 'production') {
-    defineReactive$$1(vm, '$attrs', parentData && parentData.attrs || emptyObject, function () {
-      !isUpdatingChildComponent && warn("$attrs is readonly.", vm);
-    }, true);
-    defineReactive$$1(vm, '$listeners', options._parentListeners || emptyObject, function () {
-      !isUpdatingChildComponent && warn("$listeners is readonly.", vm);
-    }, true);
-  } else {
-    defineReactive$$1(vm, '$attrs', parentData && parentData.attrs || emptyObject, null, true);
-    defineReactive$$1(vm, '$listeners', options._parentListeners || emptyObject, null, true);
-  }
-}
-
-function renderMixin (Vue) {
-  // install runtime convenience helpers
-  installRenderHelpers(Vue.prototype);
-
-  Vue.prototype.$nextTick = function (fn) {
-    return nextTick(fn, this)
-  };
-
-  Vue.prototype._render = function () {
-    var vm = this;
-    var ref = vm.$options;
-    var render = ref.render;
-    var _parentVnode = ref._parentVnode;
-
-    if (_parentVnode) {
-      vm.$scopedSlots = _parentVnode.data.scopedSlots || emptyObject;
-    }
-
-    // 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) {
-      handleError(e, vm, "render");
-      // return error render result,
-      // or previous vnode to prevent render error causing blank component
-      /* istanbul ignore else */
-      if (process.env.NODE_ENV !== 'production' && vm.$options.renderError) {
-        try {
-          vnode = vm.$options.renderError.call(vm._renderProxy, vm.$createElement, e);
-        } catch (e) {
-          handleError(e, vm, "renderError");
-          vnode = vm._vnode;
-        }
-      } else {
-        vnode = vm._vnode;
-      }
-    }
-    // return empty vnode in case the render function errored out
-    if (!(vnode instanceof VNode)) {
-      if (process.env.NODE_ENV !== '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
-  };
-}
-
-/*  */
-
-var uid$3 = 0;
-
-function initMixin (Vue) {
-  Vue.prototype._init = function (options) {
-    var vm = this;
-    // a uid
-    vm._uid = uid$3++;
-
-    var startTag, endTag;
-    /* istanbul ignore if */
-    if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
-      startTag = "vue-perf-start:" + (vm._uid);
-      endTag = "vue-perf-end:" + (vm._uid);
-      mark(startTag);
-    }
-
-    // a flag to avoid this being observed
-    vm._isVue = true;
-    // merge options
-    if (options && options._isComponent) {
-      // optimize internal component instantiation
-      // since dynamic options merging is pretty slow, and none of the
-      // internal component options needs special treatment.
-      initInternalComponent(vm, options);
-    } else {
-      vm.$options = mergeOptions(
-        resolveConstructorOptions(vm.constructor),
-        options || {},
-        vm
-      );
-    }
-    /* istanbul ignore else */
-    if (process.env.NODE_ENV !== 'production') {
-      initProxy(vm);
-    } else {
-      vm._renderProxy = vm;
-    }
-    // expose real self
-    vm._self = vm;
-    initLifecycle(vm);
-    initEvents(vm);
-    initRender(vm);
-    callHook(vm, 'beforeCreate');
-    initInjections(vm); // resolve injections before data/props
-    initState(vm);
-    initProvide(vm); // resolve provide after data/props
-    callHook(vm, 'created');
-
-    /* istanbul ignore if */
-    if (process.env.NODE_ENV !== 'production' && config.performance && mark) {
-      vm._name = formatComponentName(vm, false);
-      mark(endTag);
-      measure(("vue " + (vm._name) + " init"), startTag, endTag);
-    }
-
-    if (vm.$options.el) {
-      vm.$mount(vm.$options.el);
-    }
-  };
-}
-
-function initInternalComponent (vm, options) {
-  var opts = vm.$options = Object.create(vm.constructor.options);
-  // doing this because it's faster than dynamic enumeration.
-  var parentVnode = options._parentVnode;
-  opts.parent = options.parent;
-  opts._parentVnode = parentVnode;
-
-  var vnodeComponentOptions = parentVnode.componentOptions;
-  opts.propsData = vnodeComponentOptions.propsData;
-  opts._parentListeners = vnodeComponentOptions.listeners;
-  opts._renderChildren = vnodeComponentOptions.children;
-  opts._componentTag = vnodeComponentOptions.tag;
-
-  if (options.render) {
-    opts.render = options.render;
-    opts.staticRenderFns = options.staticRenderFns;
-  }
-}
-
-function resolveConstructorOptions (Ctor) {
-  var options = Ctor.options;
-  if (Ctor.super) {
-    var superOptions = resolveConstructorOptions(Ctor.super);
-    var cachedSuperOptions = Ctor.superOptions;
-    if (superOptions !== cachedSuperOptions) {
-      // super option changed,
-      // need to resolve new options.
-      Ctor.superOptions = superOptions;
-      // check if there are any late-modified/attached options (#4976)
-      var modifiedOptions = resolveModifiedOptions(Ctor);
-      // update base extend options
-      if (modifiedOptions) {
-        extend(Ctor.extendOptions, modifiedOptions);
-      }
-      options = Ctor.options = mergeOptions(superOptions, Ctor.extendOptions);
-      if (options.name) {
-        options.components[options.name] = Ctor;
-      }
-    }
-  }
-  return options
-}
-
-function resolveModifiedOptions (Ctor) {
-  var modified;
-  var latest = Ctor.options;
-  var sealed = Ctor.sealedOptions;
-  for (var key in latest) {
-    if (latest[key] !== sealed[key]) {
-      if (!modified) { modified = {}; }
-      modified[key] = latest[key];
-    }
-  }
-  return modified
-}
-
-function Vue (options) {
-  if (process.env.NODE_ENV !== 'production' &&
-    !(this instanceof Vue)
-  ) {
-    warn('Vue is a constructor and should be called with the `new` keyword');
-  }
-  this._init(options);
-}
-
-initMixin(Vue);
-stateMixin(Vue);
-eventsMixin(Vue);
-lifecycleMixin(Vue);
-renderMixin(Vue);
-
-/*  */
-
-function initUse (Vue) {
-  Vue.use = function (plugin) {
-    var installedPlugins = (this._installedPlugins || (this._installedPlugins = []));
-    if (installedPlugins.indexOf(plugin) > -1) {
-      return this
-    }
-
-    // additional parameters
-    var args = toArray(arguments, 1);
-    args.unshift(this);
-    if (typeof plugin.install === 'function') {
-      plugin.install.apply(plugin, args);
-    } else if (typeof plugin === 'function') {
-      plugin.apply(null, args);
-    }
-    installedPlugins.push(plugin);
-    return this
-  };
-}
-
-/*  */
-
-function initMixin$1 (Vue) {
-  Vue.mixin = function (mixin) {
-    this.options = mergeOptions(this.options, mixin);
-    return this
-  };
-}
-
-/*  */
-
-function initExtend (Vue) {
-  /**
-   * Each instance constructor, including Vue, has a unique
-   * cid. This enables us to create wrapped "child
-   * constructors" for prototypal inheritance and cache them.
-   */
-  Vue.cid = 0;
-  var cid = 1;
-
-  /**
-   * Class inheritance
-   */
-  Vue.extend = function (extendOptions) {
-    extendOptions = extendOptions || {};
-    var Super = this;
-    var SuperId = Super.cid;
-    var cachedCtors = extendOptions._Ctor || (extendOptions._Ctor = {});
-    if (cachedCtors[SuperId]) {
-      return cachedCtors[SuperId]
-    }
-
-    var name = extendOptions.name || Super.options.name;
-    if (process.env.NODE_ENV !== 'production' && name) {
-      validateComponentName(name);
-    }
-
-    var Sub = function VueComponent (options) {
-      this._init(options);
-    };
-    Sub.prototype = Object.create(Super.prototype);
-    Sub.prototype.constructor = Sub;
-    Sub.cid = cid++;
-    Sub.options = mergeOptions(
-      Super.options,
-      extendOptions
-    );
-    Sub['super'] = Super;
-
-    // For props and computed properties, we define the proxy getters on
-    // the Vue instances at extension time, on the extended prototype. This
-    // avoids Object.defineProperty calls for each instance created.
-    if (Sub.options.props) {
-      initProps$1(Sub);
-    }
-    if (Sub.options.computed) {
-      initComputed$1(Sub);
-    }
-
-    // allow further extension/mixin/plugin usage
-    Sub.extend = Super.extend;
-    Sub.mixin = Super.mixin;
-    Sub.use = Super.use;
-
-    // create asset registers, so extended classes
-    // can have their private assets too.
-    ASSET_TYPES.forEach(function (type) {
-      Sub[type] = Super[type];
-    });
-    // enable recursive self-lookup
-    if (name) {
-      Sub.options.components[name] = Sub;
-    }
-
-    // keep a reference to the super options at extension time.
-    // later at instantiation we can check if Super's options have
-    // been updated.
-    Sub.superOptions = Super.options;
-    Sub.extendOptions = extendOptions;
-    Sub.sealedOptions = extend({}, Sub.options);
-
-    // cache constructor
-    cachedCtors[SuperId] = Sub;
-    return Sub
-  };
-}
-
-function initProps$1 (Comp) {
-  var props = Comp.options.props;
-  for (var key in props) {
-    proxy(Comp.prototype, "_props", key);
-  }
-}
-
-function initComputed$1 (Comp) {
-  var computed = Comp.options.computed;
-  for (var key in computed) {
-    defineComputed(Comp.prototype, key, computed[key]);
-  }
-}
-
-/*  */
-
-function initAssetRegisters (Vue) {
-  /**
-   * Create asset registration methods.
-   */
-  ASSET_TYPES.forEach(function (type) {
-    Vue[type] = function (
-      id,
-      definition
-    ) {
-      if (!definition) {
-        return this.options[type + 's'][id]
-      } else {
-        /* istanbul ignore if */
-        if (process.env.NODE_ENV !== 'production' && type === 'component') {
-          validateComponentName(id);
-        }
-        if (type === 'component' && isPlainObject(definition)) {
-          definition.name = definition.name || id;
-          definition = this.options._base.extend(definition);
-        }
-        if (type === 'directive' && typeof definition === 'function') {
-          definition = { bind: definition, update: definition };
-        }
-        this.options[type + 's'][id] = definition;
-        return definition
-      }
-    };
-  });
-}
-
-/*  */
-
-
-
-function getComponentName (opts) {
-  return opts && (opts.Ctor.options.name || opts.tag)
-}
-
-function matches (pattern, name) {
-  if (Array.isArray(pattern)) {
-    return pattern.indexOf(name) > -1
-  } else if (typeof pattern === 'string') {
-    return pattern.split(',').indexOf(name) > -1
-  } else if (isRegExp(pattern)) {
-    return pattern.test(name)
-  }
-  /* istanbul ignore next */
-  return false
-}
-
-function pruneCache (keepAliveInstance, filter) {
-  var cache = keepAliveInstance.cache;
-  var keys = keepAliveInstance.keys;
-  var _vnode = keepAliveInstance._vnode;
-  for (var key in cache) {
-    var cachedNode = cache[key];
-    if (cachedNode) {
-      var name = getComponentName(cachedNode.componentOptions);
-      if (name && !filter(name)) {
-        pruneCacheEntry(cache, key, keys, _vnode);
-      }
-    }
-  }
-}
-
-function pruneCacheEntry (
-  cache,
-  key,
-  keys,
-  current
-) {
-  var cached$$1 = cache[key];
-  if (cached$$1 && (!current || cached$$1.tag !== current.tag)) {
-    cached$$1.componentInstance.$destroy();
-  }
-  cache[key] = null;
-  remove(keys, key);
-}
-
-var patternTypes = [String, RegExp, Array];
-
-var KeepAlive = {
-  name: 'keep-alive',
-  abstract: true,
-
-  props: {
-    include: patternTypes,
-    exclude: patternTypes,
-    max: [String, Number]
-  },
-
-  created: function created () {
-    this.cache = Object.create(null);
-    this.keys = [];
-  },
-
-  destroyed: function destroyed () {
-    for (var key in this.cache) {
-      pruneCacheEntry(this.cache, key, this.keys);
-    }
-  },
-
-  mounted: function mounted () {
-    var this$1 = this;
-
-    this.$watch('include', function (val) {
-      pruneCache(this$1, function (name) { return matches(val, name); });
-    });
-    this.$watch('exclude', function (val) {
-      pruneCache(this$1, function (name) { return !matches(val, name); });
-    });
-  },
-
-  render: function render () {
-    var slot = this.$slots.default;
-    var vnode = getFirstComponentChild(slot);
-    var componentOptions = vnode && vnode.componentOptions;
-    if (componentOptions) {
-      // check pattern
-      var name = getComponentName(componentOptions);
-      var ref = this;
-      var include = ref.include;
-      var exclude = ref.exclude;
-      if (
-        // not included
-        (include && (!name || !matches(include, name))) ||
-        // excluded
-        (exclude && name && matches(exclude, name))
-      ) {
-        return vnode
-      }
-
-      var ref$1 = this;
-      var cache = ref$1.cache;
-      var keys = ref$1.keys;
-      var key = vnode.key == null
-        // same constructor may get registered as different local components
-        // so cid alone is not enough (#3269)
-        ? componentOptions.Ctor.cid + (componentOptions.tag ? ("::" + (componentOptions.tag)) : '')
-        : vnode.key;
-      if (cache[key]) {
-        vnode.componentInstance = cache[key].componentInstance;
-        // make current key freshest
-        remove(keys, key);
-        keys.push(key);
-      } else {
-        cache[key] = vnode;
-        keys.push(key);
-        // prune oldest entry
-        if (this.max && keys.length > parseInt(this.max)) {
-          pruneCacheEntry(cache, keys[0], keys, this._vnode);
-        }
-      }
-
-      vnode.data.keepAlive = true;
-    }
-    return vnode || (slot && slot[0])
-  }
-};
-
-var builtInComponents = {
-  KeepAlive: KeepAlive
-};
-
-/*  */
-
-function initGlobalAPI (Vue) {
-  // config
-  var configDef = {};
-  configDef.get = function () { return config; };
-  if (process.env.NODE_ENV !== 'production') {
-    configDef.set = function () {
-      warn(
-        'Do not replace the Vue.config object, set individual fields instead.'
-      );
-    };
-  }
-  Object.defineProperty(Vue, 'config', configDef);
-
-  // exposed util methods.
-  // NOTE: these are not considered part of the public API - avoid relying on
-  // them unless you are aware of the risk.
-  Vue.util = {
-    warn: warn,
-    extend: extend,
-    mergeOptions: mergeOptions,
-    defineReactive: defineReactive$$1
-  };
-
-  Vue.set = set;
-  Vue.delete = del;
-  Vue.nextTick = nextTick;
-
-  Vue.options = Object.create(null);
-  ASSET_TYPES.forEach(function (type) {
-    Vue.options[type + 's'] = Object.create(null);
-  });
-
-  // this is used to identify the "base" constructor to extend all plain-object
-  // components with in Weex's multi-instance scenarios.
-  Vue.options._base = Vue;
-
-  extend(Vue.options.components, builtInComponents);
-
-  initUse(Vue);
-  initMixin$1(Vue);
-  initExtend(Vue);
-  initAssetRegisters(Vue);
-}
-
-initGlobalAPI(Vue);
-
-Object.defineProperty(Vue.prototype, '$isServer', {
-  get: isServerRendering
-});
-
-Object.defineProperty(Vue.prototype, '$ssrContext', {
-  get: function get () {
-    /* istanbul ignore next */
-    return this.$vnode && this.$vnode.ssrContext
-  }
-});
-
-// expose FunctionalRenderContext for ssr runtime helper installation
-Object.defineProperty(Vue, 'FunctionalRenderContext', {
-  value: FunctionalRenderContext
-});
-
-Vue.version = '2.5.22';
-
-/*  */
-
-// these are reserved for web because they are directly compiled away
-// during template compilation
-var isReservedAttr = makeMap('style,class');
-
-// attributes that should be using props for binding
-var acceptValue = makeMap('input,textarea,option,select,progress');
-var mustUseProp = function (tag, type, attr) {
-  return (
-    (attr === 'value' && acceptValue(tag)) && type !== 'button' ||
-    (attr === 'selected' && tag === 'option') ||
-    (attr === 'checked' && tag === 'input') ||
-    (attr === 'muted' && tag === 'video')
-  )
-};
-
-var isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck');
-
-var isBooleanAttr = makeMap(
-  'allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' +
-  'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' +
-  'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' +
-  'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' +
-  'required,reversed,scoped,seamless,selected,sortable,translate,' +
-  'truespeed,typemustmatch,visible'
-);
-
-var xlinkNS = 'http://www.w3.org/1999/xlink';
-
-var isXlink = function (name) {
-  return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink'
-};
-
-var getXlinkProp = function (name) {
-  return isXlink(name) ? name.slice(6, name.length) : ''
-};
-
-var isFalsyAttrValue = function (val) {
-  return val == null || val === false
-};
-
-/*  */
-
-function genClassForVnode (vnode) {
-  var data = vnode.data;
-  var parentNode = vnode;
-  var childNode = vnode;
-  while (isDef(childNode.componentInstance)) {
-    childNode = childNode.componentInstance._vnode;
-    if (childNode && childNode.data) {
-      data = mergeClassData(childNode.data, data);
-    }
-  }
-  while (isDef(parentNode = parentNode.parent)) {
-    if (parentNode && parentNode.data) {
-      data = mergeClassData(data, parentNode.data);
-    }
-  }
-  return renderClass(data.staticClass, data.class)
-}
-
-function mergeClassData (child, parent) {
-  return {
-    staticClass: concat(child.staticClass, parent.staticClass),
-    class: isDef(child.class)
-      ? [child.class, parent.class]
-      : parent.class
-  }
-}
-
-function renderClass (
-  staticClass,
-  dynamicClass
-) {
-  if (isDef(staticClass) || isDef(dynamicClass)) {
-    return concat(staticClass, stringifyClass(dynamicClass))
-  }
-  /* istanbul ignore next */
-  return ''
-}
-
-function concat (a, b) {
-  return a ? b ? (a + ' ' + b) : a : (b || '')
-}
-
-function stringifyClass (value) {
-  if (Array.isArray(value)) {
-    return stringifyArray(value)
-  }
-  if (isObject(value)) {
-    return stringifyObject(value)
-  }
-  if (typeof value === 'string') {
-    return value
-  }
-  /* istanbul ignore next */
-  return ''
-}
-
-function stringifyArray (value) {
-  var res = '';
-  var stringified;
-  for (var i = 0, l = value.length; i < l; i++) {
-    if (isDef(stringified = stringifyClass(value[i])) && stringified !== '') {
-      if (res) { res += ' '; }
-      res += stringified;
-    }
-  }
-  return res
-}
-
-function stringifyObject (value) {
-  var res = '';
-  for (var key in value) {
-    if (value[key]) {
-      if (res) { res += ' '; }
-      res += key;
-    }
-  }
-  return res
-}
-
-/*  */
-
-var namespaceMap = {
-  svg: 'http://www.w3.org/2000/svg',
-  math: 'http://www.w3.org/1998/Math/MathML'
-};
-
-var isHTMLTag = makeMap(
-  'html,body,base,head,link,meta,style,title,' +
-  'address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,' +
-  'div,dd,dl,dt,figcaption,figure,picture,hr,img,li,main,ol,p,pre,ul,' +
-  'a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,' +
-  's,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video,' +
-  'embed,object,param,source,canvas,script,noscript,del,ins,' +
-  'caption,col,colgroup,table,thead,tbody,td,th,tr,' +
-  'button,datalist,fieldset,form,input,label,legend,meter,optgroup,option,' +
-  'output,progress,select,textarea,' +
-  'details,dialog,menu,menuitem,summary,' +
-  'content,element,shadow,template,blockquote,iframe,tfoot'
-);
-
-// this map is intentionally selective, only covering SVG elements that may
-// contain child elements.
-var isSVG = makeMap(
-  'svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,font-face,' +
-  'foreignObject,g,glyph,image,line,marker,mask,missing-glyph,path,pattern,' +
-  'polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view',
-  true
-);
-
-var isReservedTag = function (tag) {
-  return isHTMLTag(tag) || isSVG(tag)
-};
-
-function getTagNamespace (tag) {
-  if (isSVG(tag)) {
-    return 'svg'
-  }
-  // basic support for MathML
-  // note it doesn't support other MathML elements being component roots
-  if (tag === 'math') {
-    return 'math'
-  }
-}
-
-var unknownElementCache = Object.create(null);
-function isUnknownElement (tag) {
-  /* istanbul ignore if */
-  if (!inBrowser) {
-    return true
-  }
-  if (isReservedTag(tag)) {
-    return false
-  }
-  tag = tag.toLowerCase();
-  /* istanbul ignore if */
-  if (unknownElementCache[tag] != null) {
-    return unknownElementCache[tag]
-  }
-  var el = document.createElement(tag);
-  if (tag.indexOf('-') > -1) {
-    // http://stackoverflow.com/a/28210364/1070244
-    return (unknownElementCache[tag] = (
-      el.constructor === window.HTMLUnknownElement ||
-      el.constructor === window.HTMLElement
-    ))
-  } else {
-    return (unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString()))
-  }
-}
-
-var isTextInputType = makeMap('text,number,password,search,email,tel,url');
-
-/*  */
-
-/**
- * Query an element selector if it's not an element already.
- */
-function query (el) {
-  if (typeof el === 'string') {
-    var selected = document.querySelector(el);
-    if (!selected) {
-      process.env.NODE_ENV !== 'production' && warn(
-        'Cannot find element: ' + el
-      );
-      return document.createElement('div')
-    }
-    return selected
-  } else {
-    return el
-  }
-}
-
-/*  */
-
-function createElement$1 (tagName, vnode) {
-  var elm = document.createElement(tagName);
-  if (tagName !== 'select') {
-    return elm
-  }
-  // false or null will remove the attribute but undefined will not
-  if (vnode.data && vnode.data.attrs && vnode.data.attrs.multiple !== undefined) {
-    elm.setAttribute('multiple', 'multiple');
-  }
-  return elm
-}
-
-function createElementNS (namespace, tagName) {
-  return document.createElementNS(namespaceMap[namespace], tagName)
-}
-
-function createTextNode (text) {
-  return document.createTextNode(text)
-}
-
-function createComment (text) {
-  return document.createComment(text)
-}
-
-function insertBefore (parentNode, newNode, referenceNode) {
-  parentNode.insertBefore(newNode, referenceNode);
-}
-
-function removeChild (node, child) {
-  node.removeChild(child);
-}
-
-function appendChild (node, child) {
-  node.appendChild(child);
-}
-
-function parentNode (node) {
-  return node.parentNode
-}
-
-function nextSibling (node) {
-  return node.nextSibling
-}
-
-function tagName (node) {
-  return node.tagName
-}
-
-function setTextContent (node, text) {
-  node.textContent = text;
-}
-
-function setStyleScope (node, scopeId) {
-  node.setAttribute(scopeId, '');
-}
-
-var nodeOps = /*#__PURE__*/Object.freeze({
-  createElement: createElement$1,
-  createElementNS: createElementNS,
-  createTextNode: createTextNode,
-  createComment: createComment,
-  insertBefore: insertBefore,
-  removeChild: removeChild,
-  appendChild: appendChild,
-  parentNode: parentNode,
-  nextSibling: nextSibling,
-  tagName: tagName,
-  setTextContent: setTextContent,
-  setStyleScope: setStyleScope
-});
-
-/*  */
-
-var ref = {
-  create: function create (_, vnode) {
-    registerRef(vnode);
-  },
-  update: function update (oldVnode, vnode) {
-    if (oldVnode.data.ref !== vnode.data.ref) {
-      registerRef(oldVnode, true);
-      registerRef(vnode);
-    }
-  },
-  destroy: function destroy (vnode) {
-    registerRef(vnode, true);
-  }
-};
-
-function registerRef (vnode, isRemoval) {
-  var key = vnode.data.ref;
-  if (!isDef(key)) { return }
-
-  var vm = vnode.context;
-  var ref = vnode.componentInstance || vnode.elm;
-  var refs = vm.$refs;
-  if (isRemoval) {
-    if (Array.isArray(refs[key])) {
-      remove(refs[key], ref);
-    } else if (refs[key] === ref) {
-      refs[key] = undefined;
-    }
-  } else {
-    if (vnode.data.refInFor) {
-      if (!Array.isArray(refs[key])) {
-        refs[key] = [ref];
-      } else if (refs[key].indexOf(ref) < 0) {
-        // $flow-disable-line
-        refs[key].push(ref);
-      }
-    } else {
-      refs[key] = ref;
-    }
-  }
-}
-
-/**
- * Virtual DOM patching algorithm based on Snabbdom by
- * Simon Friis Vindum (@paldepind)
- * Licensed under the MIT License
- * https://github.com/paldepind/snabbdom/blob/master/LICENSE
- *
- * modified by Evan You (@yyx990803)
- *
- * Not type-checking this because this file is perf-critical and the cost
- * of making flow understand it is not worth it.
- */
-
-var emptyNode = new VNode('', {}, []);
-
-var hooks = ['create', 'activate', 'update', 'remove', 'destroy'];
-
-function sameVnode (a, b) {
-  return (
-    a.key === b.key && (
-      (
-        a.tag === b.tag &&
-        a.isComment === b.isComment &&
-        isDef(a.data) === isDef(b.data) &&
-        sameInputType(a, b)
-      ) || (
-        isTrue(a.isAsyncPlaceholder) &&
-        a.asyncFactory === b.asyncFactory &&
-        isUndef(b.asyncFactory.error)
-      )
-    )
-  )
-}
-
-function sameInputType (a, b) {
-  if (a.tag !== 'input') { return true }
-  var i;
-  var typeA = isDef(i = a.data) && isDef(i = i.attrs) && i.type;
-  var typeB = isDef(i = b.data) && isDef(i = i.attrs) && i.type;
-  return typeA === typeB || isTextInputType(typeA) && isTextInputType(typeB)
-}
-
-function createKeyToOldIdx (children, beginIdx, endIdx) {
-  var i, key;
-  var map = {};
-  for (i = beginIdx; i <= endIdx; ++i) {
-    key = children[i].key;
-    if (isDef(key)) { map[key] = i; }
-  }
-  return map
-}
-
-function createPatchFunction (backend) {
-  var i, j;
-  var cbs = {};
-
-  var modules = backend.modules;
-  var nodeOps = backend.nodeOps;
-
-  for (i = 0; i < hooks.length; ++i) {
-    cbs[hooks[i]] = [];
-    for (j = 0; j < modules.length; ++j) {
-      if (isDef(modules[j][hooks[i]])) {
-        cbs[hooks[i]].push(modules[j][hooks[i]]);
-      }
-    }
-  }
-
-  function emptyNodeAt (elm) {
-    return new VNode(nodeOps.tagName(elm).toLowerCase(), {}, [], undefined, elm)
-  }
-
-  function createRmCb (childElm, listeners) {
-    function remove$$1 () {
-      if (--remove$$1.listeners === 0) {
-        removeNode(childElm);
-      }
-    }
-    remove$$1.listeners = listeners;
-    return remove$$1
-  }
-
-  function removeNode (el) {
-    var parent = nodeOps.parentNode(el);
-    // element may have already been removed due to v-html / v-text
-    if (isDef(parent)) {
-      nodeOps.removeChild(parent, el);
-    }
-  }
-
-  function isUnknownElement$$1 (vnode, inVPre) {
-    return (
-      !inVPre &&
-      !vnode.ns &&
-      !(
-        config.ignoredElements.length &&
-        config.ignoredElements.some(function (ignore) {
-          return isRegExp(ignore)
-            ? ignore.test(vnode.tag)
-            : ignore === vnode.tag
-        })
-      ) &&
-      config.isUnknownElement(vnode.tag)
-    )
-  }
-
-  var creatingElmInVPre = 0;
-
-  function createElm (
-    vnode,
-    insertedVnodeQueue,
-    parentElm,
-    refElm,
-    nested,
-    ownerArray,
-    index
-  ) {
-    if (isDef(vnode.elm) && isDef(ownerArray)) {
-      // This vnode was used in a previous render!
-      // now it's used as a new node, overwriting its elm would cause
-      // potential patch errors down the road when it's used as an insertion
-      // reference node. Instead, we clone the node on-demand before creating
-      // associated DOM element for it.
-      vnode = ownerArray[index] = cloneVNode(vnode);
-    }
-
-    vnode.isRootInsert = !nested; // for transition enter check
-    if (createComponent(vnode, insertedVnodeQueue, parentElm, refElm)) {
-      return
-    }
-
-    var data = vnode.data;
-    var children = vnode.children;
-    var tag = vnode.tag;
-    if (isDef(tag)) {
-      if (process.env.NODE_ENV !== 'production') {
-        if (data && data.pre) {
-          creatingElmInVPre++;
-        }
-        if (isUnknownElement$$1(vnode, creatingElmInVPre)) {
-          warn(
-            'Unknown custom element: <' + tag + '> - did you ' +
-            'register the component correctly? For recursive components, ' +
-            'make sure to provide the "name" option.',
-            vnode.context
-          );
-        }
-      }
-
-      vnode.elm = vnode.ns
-        ? nodeOps.createElementNS(vnode.ns, tag)
-        : nodeOps.createElement(tag, vnode);
-      setScope(vnode);
-
-      /* istanbul ignore if */
-      {
-        createChildren(vnode, children, insertedVnodeQueue);
-        if (isDef(data)) {
-          invokeCreateHooks(vnode, insertedVnodeQueue);
-        }
-        insert(parentElm, vnode.elm, refElm);
-      }
-
-      if (process.env.NODE_ENV !== 'production' && data && data.pre) {
-        creatingElmInVPre--;
-      }
-    } else if (isTrue(vnode.isComment)) {
-      vnode.elm = nodeOps.createComment(vnode.text);
-      insert(parentElm, vnode.elm, refElm);
-    } else {
-      vnode.elm = nodeOps.createTextNode(vnode.text);
-      insert(parentElm, vnode.elm, refElm);
-    }
-  }
-
-  function createComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
-    var i = vnode.data;
-    if (isDef(i)) {
-      var isReactivated = isDef(vnode.componentInstance) && i.keepAlive;
-      if (isDef(i = i.hook) && isDef(i = i.init)) {
-        i(vnode, false /* hydrating */);
-      }
-      // after calling the init hook, if the vnode is a child component
-      // it should've created a child instance and mounted it. the child
-      // component also has set the placeholder vnode's elm.
-      // in that case we can just return the element and be done.
-      if (isDef(vnode.componentInstance)) {
-        initComponent(vnode, insertedVnodeQueue);
-        insert(parentElm, vnode.elm, refElm);
-        if (isTrue(isReactivated)) {
-          reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm);
-        }
-        return true
-      }
-    }
-  }
-
-  function initComponent (vnode, insertedVnodeQueue) {
-    if (isDef(vnode.data.pendingInsert)) {
-      insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert);
-      vnode.data.pendingInsert = null;
-    }
-    vnode.elm = vnode.componentInstance.$el;
-    if (isPatchable(vnode)) {
-      invokeCreateHooks(vnode, insertedVnodeQueue);
-      setScope(vnode);
-    } else {
-      // empty component root.
-      // skip all element-related modules except for ref (#3455)
-      registerRef(vnode);
-      // make sure to invoke the insert hook
-      insertedVnodeQueue.push(vnode);
-    }
-  }
-
-  function reactivateComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
-    var i;
-    // hack for #4339: a reactivated component with inner transition
-    // does not trigger because the inner node's created hooks are not called
-    // again. It's not ideal to involve module-specific logic in here but
-    // there doesn't seem to be a better way to do it.
-    var innerNode = vnode;
-    while (innerNode.componentInstance) {
-      innerNode = innerNode.componentInstance._vnode;
-      if (isDef(i = innerNode.data) && isDef(i = i.transition)) {
-        for (i = 0; i < cbs.activate.length; ++i) {
-          cbs.activate[i](emptyNode, innerNode);
-        }
-        insertedVnodeQueue.push(innerNode);
-        break
-      }
-    }
-    // unlike a newly created component,
-    // a reactivated keep-alive component doesn't insert itself
-    insert(parentElm, vnode.elm, refElm);
-  }
-
-  function insert (parent, elm, ref$$1) {
-    if (isDef(parent)) {
-      if (isDef(ref$$1)) {
-        if (nodeOps.parentNode(ref$$1) === parent) {
-          nodeOps.insertBefore(parent, elm, ref$$1);
-        }
-      } else {
-        nodeOps.appendChild(parent, elm);
-      }
-    }
-  }
-
-  function createChildren (vnode, children, insertedVnodeQueue) {
-    if (Array.isArray(children)) {
-      if (process.env.NODE_ENV !== 'production') {
-        checkDuplicateKeys(children);
-      }
-      for (var i = 0; i < children.length; ++i) {
-        createElm(children[i], insertedVnodeQueue, vnode.elm, null, true, children, i);
-      }
-    } else if (isPrimitive(vnode.text)) {
-      nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(String(vnode.text)));
-    }
-  }
-
-  function isPatchable (vnode) {
-    while (vnode.componentInstance) {
-      vnode = vnode.componentInstance._vnode;
-    }
-    return isDef(vnode.tag)
-  }
-
-  function invokeCreateHooks (vnode, insertedVnodeQueue) {
-    for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
-      cbs.create[i$1](emptyNode, vnode);
-    }
-    i = vnode.data.hook; // Reuse variable
-    if (isDef(i)) {
-      if (isDef(i.create)) { i.create(emptyNode, vnode); }
-      if (isDef(i.insert)) { insertedVnodeQueue.push(vnode); }
-    }
-  }
-
-  // set scope id attribute for scoped CSS.
-  // this is implemented as a special case to avoid the overhead
-  // of going through the normal attribute patching process.
-  function setScope (vnode) {
-    var i;
-    if (isDef(i = vnode.fnScopeId)) {
-      nodeOps.setStyleScope(vnode.elm, i);
-    } else {
-      var ancestor = vnode;
-      while (ancestor) {
-        if (isDef(i = ancestor.context) && isDef(i = i.$options._scopeId)) {
-          nodeOps.setStyleScope(vnode.elm, i);
-        }
-        ancestor = ancestor.parent;
-      }
-    }
-    // for slot content they should also get the scopeId from the host instance.
-    if (isDef(i = activeInstance) &&
-      i !== vnode.context &&
-      i !== vnode.fnContext &&
-      isDef(i = i.$options._scopeId)
-    ) {
-      nodeOps.setStyleScope(vnode.elm, i);
-    }
-  }
-
-  function addVnodes (parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) {
-    for (; startIdx <= endIdx; ++startIdx) {
-      createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm, false, vnodes, startIdx);
-    }
-  }
-
-  function invokeDestroyHook (vnode) {
-    var i, j;
-    var data = vnode.data;
-    if (isDef(data)) {
-      if (isDef(i = data.hook) && isDef(i = i.destroy)) { i(vnode); }
-      for (i = 0; i < cbs.destroy.length; ++i) { cbs.destroy[i](vnode); }
-    }
-    if (isDef(i = vnode.children)) {
-      for (j = 0; j < vnode.children.length; ++j) {
-        invokeDestroyHook(vnode.children[j]);
-      }
-    }
-  }
-
-  function removeVnodes (parentElm, vnodes, startIdx, endIdx) {
-    for (; startIdx <= endIdx; ++startIdx) {
-      var ch = vnodes[startIdx];
-      if (isDef(ch)) {
-        if (isDef(ch.tag)) {
-          removeAndInvokeRemoveHook(ch);
-          invokeDestroyHook(ch);
-        } else { // Text node
-          removeNode(ch.elm);
-        }
-      }
-    }
-  }
-
-  function removeAndInvokeRemoveHook (vnode, rm) {
-    if (isDef(rm) || isDef(vnode.data)) {
-      var i;
-      var listeners = cbs.remove.length + 1;
-      if (isDef(rm)) {
-        // we have a recursively passed down rm callback
-        // increase the listeners count
-        rm.listeners += listeners;
-      } else {
-        // directly removing
-        rm = createRmCb(vnode.elm, listeners);
-      }
-      // recursively invoke hooks on child component root node
-      if (isDef(i = vnode.componentInstance) && isDef(i = i._vnode) && isDef(i.data)) {
-        removeAndInvokeRemoveHook(i, rm);
-      }
-      for (i = 0; i < cbs.remove.length; ++i) {
-        cbs.remove[i](vnode, rm);
-      }
-      if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) {
-        i(vnode, rm);
-      } else {
-        rm();
-      }
-    } else {
-      removeNode(vnode.elm);
-    }
-  }
-
-  function updateChildren (parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) {
-    var oldStartIdx = 0;
-    var newStartIdx = 0;
-    var oldEndIdx = oldCh.length - 1;
-    var oldStartVnode = oldCh[0];
-    var oldEndVnode = oldCh[oldEndIdx];
-    var newEndIdx = newCh.length - 1;
-    var newStartVnode = newCh[0];
-    var newEndVnode = newCh[newEndIdx];
-    var oldKeyToIdx, idxInOld, vnodeToMove, refElm;
-
-    // removeOnly is a special flag used only by <transition-group>
-    // to ensure removed elements stay in correct relative positions
-    // during leaving transitions
-    var canMove = !removeOnly;
-
-    if (process.env.NODE_ENV !== 'production') {
-      checkDuplicateKeys(newCh);
-    }
-
-    while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {
-      if (isUndef(oldStartVnode)) {
-        oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left
-      } else if (isUndef(oldEndVnode)) {
-        oldEndVnode = oldCh[--oldEndIdx];
-      } else if (sameVnode(oldStartVnode, newStartVnode)) {
-        patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
-        oldStartVnode = oldCh[++oldStartIdx];
-        newStartVnode = newCh[++newStartIdx];
-      } else if (sameVnode(oldEndVnode, newEndVnode)) {
-        patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
-        oldEndVnode = oldCh[--oldEndIdx];
-        newEndVnode = newCh[--newEndIdx];
-      } else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right
-        patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
-        canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm));
-        oldStartVnode = oldCh[++oldStartIdx];
-        newEndVnode = newCh[--newEndIdx];
-      } else if (sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left
-        patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
-        canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm);
-        oldEndVnode = oldCh[--oldEndIdx];
-        newStartVnode = newCh[++newStartIdx];
-      } else {
-        if (isUndef(oldKeyToIdx)) { oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx); }
-        idxInOld = isDef(newStartVnode.key)
-          ? oldKeyToIdx[newStartVnode.key]
-          : findIdxInOld(newStartVnode, oldCh, oldStartIdx, oldEndIdx);
-        if (isUndef(idxInOld)) { // New element
-          createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
-        } else {
-          vnodeToMove = oldCh[idxInOld];
-          if (sameVnode(vnodeToMove, newStartVnode)) {
-            patchVnode(vnodeToMove, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
-            oldCh[idxInOld] = undefined;
-            canMove && nodeOps.insertBefore(parentElm, vnodeToMove.elm, oldStartVnode.elm);
-          } else {
-            // same key but different element. treat as new element
-            createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
-          }
-        }
-        newStartVnode = newCh[++newStartIdx];
-      }
-    }
-    if (oldStartIdx > oldEndIdx) {
-      refElm = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
-      addVnodes(parentElm, refElm, newCh, newStartIdx, newEndIdx, insertedVnodeQueue);
-    } else if (newStartIdx > newEndIdx) {
-      removeVnodes(parentElm, oldCh, oldStartIdx, oldEndIdx);
-    }
-  }
-
-  function checkDuplicateKeys (children) {
-    var seenKeys = {};
-    for (var i = 0; i < children.length; i++) {
-      var vnode = children[i];
-      var key = vnode.key;
-      if (isDef(key)) {
-        if (seenKeys[key]) {
-          warn(
-            ("Duplicate keys detected: '" + key + "'. This may cause an update error."),
-            vnode.context
-          );
-        } else {
-          seenKeys[key] = true;
-        }
-      }
-    }
-  }
-
-  function findIdxInOld (node, oldCh, start, end) {
-    for (var i = start; i < end; i++) {
-      var c = oldCh[i];
-      if (isDef(c) && sameVnode(node, c)) { return i }
-    }
-  }
-
-  function patchVnode (
-    oldVnode,
-    vnode,
-    insertedVnodeQueue,
-    ownerArray,
-    index,
-    removeOnly
-  ) {
-    if (oldVnode === vnode) {
-      return
-    }
-
-    if (isDef(vnode.elm) && isDef(ownerArray)) {
-      // clone reused vnode
-      vnode = ownerArray[index] = cloneVNode(vnode);
-    }
-
-    var elm = vnode.elm = oldVnode.elm;
-
-    if (isTrue(oldVnode.isAsyncPlaceholder)) {
-      if (isDef(vnode.asyncFactory.resolved)) {
-        hydrate(oldVnode.elm, vnode, insertedVnodeQueue);
-      } else {
-        vnode.isAsyncPlaceholder = true;
-      }
-      return
-    }
-
-    // reuse element for static trees.
-    // note we only do this if the vnode is cloned -
-    // if the new node is not cloned it means the render functions have been
-    // reset by the hot-reload-api and we need to do a proper re-render.
-    if (isTrue(vnode.isStatic) &&
-      isTrue(oldVnode.isStatic) &&
-      vnode.key === oldVnode.key &&
-      (isTrue(vnode.isCloned) || isTrue(vnode.isOnce))
-    ) {
-      vnode.componentInstance = oldVnode.componentInstance;
-      return
-    }
-
-    var i;
-    var data = vnode.data;
-    if (isDef(data) && isDef(i = data.hook) && isDef(i = i.prepatch)) {
-      i(oldVnode, vnode);
-    }
-
-    var oldCh = oldVnode.children;
-    var ch = vnode.children;
-    if (isDef(data) && isPatchable(vnode)) {
-      for (i = 0; i < cbs.update.length; ++i) { cbs.update[i](oldVnode, vnode); }
-      if (isDef(i = data.hook) && isDef(i = i.update)) { i(oldVnode, vnode); }
-    }
-    if (isUndef(vnode.text)) {
-      if (isDef(oldCh) && isDef(ch)) {
-        if (oldCh !== ch) { updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly); }
-      } else if (isDef(ch)) {
-        if (process.env.NODE_ENV !== 'production') {
-          checkDuplicateKeys(ch);
-        }
-        if (isDef(oldVnode.text)) { nodeOps.setTextContent(elm, ''); }
-        addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue);
-      } else if (isDef(oldCh)) {
-        removeVnodes(elm, oldCh, 0, oldCh.length - 1);
-      } else if (isDef(oldVnode.text)) {
-        nodeOps.setTextContent(elm, '');
-      }
-    } else if (oldVnode.text !== vnode.text) {
-      nodeOps.setTextContent(elm, vnode.text);
-    }
-    if (isDef(data)) {
-      if (isDef(i = data.hook) && isDef(i = i.postpatch)) { i(oldVnode, vnode); }
-    }
-  }
-
-  function invokeInsertHook (vnode, queue, initial) {
-    // delay insert hooks for component root nodes, invoke them after the
-    // element is really inserted
-    if (isTrue(initial) && isDef(vnode.parent)) {
-      vnode.parent.data.pendingInsert = queue;
-    } else {
-      for (var i = 0; i < queue.length; ++i) {
-        queue[i].data.hook.insert(queue[i]);
-      }
-    }
-  }
-
-  var hydrationBailed = false;
-  // list of modules that can skip create hook during hydration because they
-  // are already rendered on the client or has no need for initialization
-  // Note: style is excluded because it relies on initial clone for future
-  // deep updates (#7063).
-  var isRenderedModule = makeMap('attrs,class,staticClass,staticStyle,key');
-
-  // Note: this is a browser-only function so we can assume elms are DOM nodes.
-  function hydrate (elm, vnode, insertedVnodeQueue, inVPre) {
-    var i;
-    var tag = vnode.tag;
-    var data = vnode.data;
-    var children = vnode.children;
-    inVPre = inVPre || (data && data.pre);
-    vnode.elm = elm;
-
-    if (isTrue(vnode.isComment) && isDef(vnode.asyncFactory)) {
-      vnode.isAsyncPlaceholder = true;
-      return true
-    }
-    // assert node match
-    if (process.env.NODE_ENV !== 'production') {
-      if (!assertNodeMatch(elm, vnode, inVPre)) {
-        return false
-      }
-    }
-    if (isDef(data)) {
-      if (isDef(i = data.hook) && isDef(i = i.init)) { i(vnode, true /* hydrating */); }
-      if (isDef(i = vnode.componentInstance)) {
-        // child component. it should have hydrated its own tree.
-        initComponent(vnode, insertedVnodeQueue);
-        return true
-      }
-    }
-    if (isDef(tag)) {
-      if (isDef(children)) {
-        // empty element, allow client to pick up and populate children
-        if (!elm.hasChildNodes()) {
-          createChildren(vnode, children, insertedVnodeQueue);
-        } else {
-          // v-html and domProps: innerHTML
-          if (isDef(i = data) && isDef(i = i.domProps) && isDef(i = i.innerHTML)) {
-            if (i !== elm.innerHTML) {
-              /* istanbul ignore if */
-              if (process.env.NODE_ENV !== 'production' &&
-                typeof console !== 'undefined' &&
-                !hydrationBailed
-              ) {
-                hydrationBailed = true;
-                console.warn('Parent: ', elm);
-                console.warn('server innerHTML: ', i);
-                console.warn('client innerHTML: ', elm.innerHTML);
-              }
-              return false
-            }
-          } else {
-            // iterate and compare children lists
-            var childrenMatch = true;
-            var childNode = elm.firstChild;
-            for (var i$1 = 0; i$1 < children.length; i$1++) {
-              if (!childNode || !hydrate(childNode, children[i$1], insertedVnodeQueue, inVPre)) {
-                childrenMatch = false;
-                break
-              }
-              childNode = childNode.nextSibling;
-            }
-            // if childNode is not null, it means the actual childNodes list is
-            // longer than the virtual children list.
-            if (!childrenMatch || childNode) {
-              /* istanbul ignore if */
-              if (process.env.NODE_ENV !== 'production' &&
-                typeof console !== 'undefined' &&
-                !hydrationBailed
-              ) {
-                hydrationBailed = true;
-                console.warn('Parent: ', elm);
-                console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children);
-              }
-              return false
-            }
-          }
-        }
-      }
-      if (isDef(data)) {
-        var fullInvoke = false;
-        for (var key in data) {
-          if (!isRenderedModule(key)) {
-            fullInvoke = true;
-            invokeCreateHooks(vnode, insertedVnodeQueue);
-            break
-          }
-        }
-        if (!fullInvoke && data['class']) {
-          // ensure collecting deps for deep class bindings for future updates
-          traverse(data['class']);
-        }
-      }
-    } else if (elm.data !== vnode.text) {
-      elm.data = vnode.text;
-    }
-    return true
-  }
-
-  function assertNodeMatch (node, vnode, inVPre) {
-    if (isDef(vnode.tag)) {
-      return vnode.tag.indexOf('vue-component') === 0 || (
-        !isUnknownElement$$1(vnode, inVPre) &&
-        vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase())
-      )
-    } else {
-      return node.nodeType === (vnode.isComment ? 8 : 3)
-    }
-  }
-
-  return function patch (oldVnode, vnode, hydrating, removeOnly) {
-    if (isUndef(vnode)) {
-      if (isDef(oldVnode)) { invokeDestroyHook(oldVnode); }
-      return
-    }
-
-    var isInitialPatch = false;
-    var insertedVnodeQueue = [];
-
-    if (isUndef(oldVnode)) {
-      // empty mount (likely as component), create new root element
-      isInitialPatch = true;
-      createElm(vnode, insertedVnodeQueue);
-    } else {
-      var isRealElement = isDef(oldVnode.nodeType);
-      if (!isRealElement && sameVnode(oldVnode, vnode)) {
-        // patch existing root node
-        patchVnode(oldVnode, vnode, insertedVnodeQueue, null, null, removeOnly);
-      } else {
-        if (isRealElement) {
-          // mounting to a real element
-          // check if this is server-rendered content and if we can perform
-          // a successful hydration.
-          if (oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) {
-            oldVnode.removeAttribute(SSR_ATTR);
-            hydrating = true;
-          }
-          if (isTrue(hydrating)) {
-            if (hydrate(oldVnode, vnode, insertedVnodeQueue)) {
-              invokeInsertHook(vnode, insertedVnodeQueue, true);
-              return oldVnode
-            } else if (process.env.NODE_ENV !== 'production') {
-              warn(
-                'The client-side rendered virtual DOM tree is not matching ' +
-                'server-rendered content. This is likely caused by incorrect ' +
-                'HTML markup, for example nesting block-level elements inside ' +
-                '<p>, or missing <tbody>. Bailing hydration and performing ' +
-                'full client-side render.'
-              );
-            }
-          }
-          // either not server-rendered, or hydration failed.
-          // create an empty node and replace it
-          oldVnode = emptyNodeAt(oldVnode);
-        }
-
-        // replacing existing element
-        var oldElm = oldVnode.elm;
-        var parentElm = nodeOps.parentNode(oldElm);
-
-        // create new node
-        createElm(
-          vnode,
-          insertedVnodeQueue,
-          // extremely rare edge case: do not insert if old element is in a
-          // leaving transition. Only happens when combining transition +
-          // keep-alive + HOCs. (#4590)
-          oldElm._leaveCb ? null : parentElm,
-          nodeOps.nextSibling(oldElm)
-        );
-
-        // update parent placeholder node element, recursively
-        if (isDef(vnode.parent)) {
-          var ancestor = vnode.parent;
-          var patchable = isPatchable(vnode);
-          while (ancestor) {
-            for (var i = 0; i < cbs.destroy.length; ++i) {
-              cbs.destroy[i](ancestor);
-            }
-            ancestor.elm = vnode.elm;
-            if (patchable) {
-              for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
-                cbs.create[i$1](emptyNode, ancestor);
-              }
-              // #6513
-              // invoke insert hooks that may have been merged by create hooks.
-              // e.g. for directives that uses the "inserted" hook.
-              var insert = ancestor.data.hook.insert;
-              if (insert.merged) {
-                // start at index 1 to avoid re-invoking component mounted hook
-                for (var i$2 = 1; i$2 < insert.fns.length; i$2++) {
-                  insert.fns[i$2]();
-                }
-              }
-            } else {
-              registerRef(ancestor);
-            }
-            ancestor = ancestor.parent;
-          }
-        }
-
-        // destroy old node
-        if (isDef(parentElm)) {
-          removeVnodes(parentElm, [oldVnode], 0, 0);
-        } else if (isDef(oldVnode.tag)) {
-          invokeDestroyHook(oldVnode);
-        }
-      }
-    }
-
-    invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch);
-    return vnode.elm
-  }
-}
-
-/*  */
-
-var directives = {
-  create: updateDirectives,
-  update: updateDirectives,
-  destroy: function unbindDirectives (vnode) {
-    updateDirectives(vnode, emptyNode);
-  }
-};
-
-function updateDirectives (oldVnode, vnode) {
-  if (oldVnode.data.directives || vnode.data.directives) {
-    _update(oldVnode, vnode);
-  }
-}
-
-function _update (oldVnode, vnode) {
-  var isCreate = oldVnode === emptyNode;
-  var isDestroy = vnode === emptyNode;
-  var oldDirs = normalizeDirectives$1(oldVnode.data.directives, oldVnode.context);
-  var newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context);
-
-  var dirsWithInsert = [];
-  var dirsWithPostpatch = [];
-
-  var key, oldDir, dir;
-  for (key in newDirs) {
-    oldDir = oldDirs[key];
-    dir = newDirs[key];
-    if (!oldDir) {
-      // new directive, bind
-      callHook$1(dir, 'bind', vnode, oldVnode);
-      if (dir.def && dir.def.inserted) {
-        dirsWithInsert.push(dir);
-      }
-    } else {
-      // existing directive, update
-      dir.oldValue = oldDir.value;
-      callHook$1(dir, 'update', vnode, oldVnode);
-      if (dir.def && dir.def.componentUpdated) {
-        dirsWithPostpatch.push(dir);
-      }
-    }
-  }
-
-  if (dirsWithInsert.length) {
-    var callInsert = function () {
-      for (var i = 0; i < dirsWithInsert.length; i++) {
-        callHook$1(dirsWithInsert[i], 'inserted', vnode, oldVnode);
-      }
-    };
-    if (isCreate) {
-      mergeVNodeHook(vnode, 'insert', callInsert);
-    } else {
-      callInsert();
-    }
-  }
-
-  if (dirsWithPostpatch.length) {
-    mergeVNodeHook(vnode, 'postpatch', function () {
-      for (var i = 0; i < dirsWithPostpatch.length; i++) {
-        callHook$1(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode);
-      }
-    });
-  }
-
-  if (!isCreate) {
-    for (key in oldDirs) {
-      if (!newDirs[key]) {
-        // no longer present, unbind
-        callHook$1(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy);
-      }
-    }
-  }
-}
-
-var emptyModifiers = Object.create(null);
-
-function normalizeDirectives$1 (
-  dirs,
-  vm
-) {
-  var res = Object.create(null);
-  if (!dirs) {
-    // $flow-disable-line
-    return res
-  }
-  var i, dir;
-  for (i = 0; i < dirs.length; i++) {
-    dir = dirs[i];
-    if (!dir.modifiers) {
-      // $flow-disable-line
-      dir.modifiers = emptyModifiers;
-    }
-    res[getRawDirName(dir)] = dir;
-    dir.def = resolveAsset(vm.$options, 'directives', dir.name, true);
-  }
-  // $flow-disable-line
-  return res
-}
-
-function getRawDirName (dir) {
-  return dir.rawName || ((dir.name) + "." + (Object.keys(dir.modifiers || {}).join('.')))
-}
-
-function callHook$1 (dir, hook, vnode, oldVnode, isDestroy) {
-  var fn = dir.def && dir.def[hook];
-  if (fn) {
-    try {
-      fn(vnode.elm, dir, vnode, oldVnode, isDestroy);
-    } catch (e) {
-      handleError(e, vnode.context, ("directive " + (dir.name) + " " + hook + " hook"));
-    }
-  }
-}
-
-var baseModules = [
-  ref,
-  directives
-];
-
-/*  */
-
-function updateAttrs (oldVnode, vnode) {
-  var opts = vnode.componentOptions;
-  if (isDef(opts) && opts.Ctor.options.inheritAttrs === false) {
-    return
-  }
-  if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {
-    return
-  }
-  var key, cur, old;
-  var elm = vnode.elm;
-  var oldAttrs = oldVnode.data.attrs || {};
-  var attrs = vnode.data.attrs || {};
-  // clone observed objects, as the user probably wants to mutate it
-  if (isDef(attrs.__ob__)) {
-    attrs = vnode.data.attrs = extend({}, attrs);
-  }
-
-  for (key in attrs) {
-    cur = attrs[key];
-    old = oldAttrs[key];
-    if (old !== cur) {
-      setAttr(elm, key, cur);
-    }
-  }
-  // #4391: in IE9, setting type can reset value for input[type=radio]
-  // #6666: IE/Edge forces progress value down to 1 before setting a max
-  /* istanbul ignore if */
-  if ((isIE || isEdge) && attrs.value !== oldAttrs.value) {
-    setAttr(elm, 'value', attrs.value);
-  }
-  for (key in oldAttrs) {
-    if (isUndef(attrs[key])) {
-      if (isXlink(key)) {
-        elm.removeAttributeNS(xlinkNS, getXlinkProp(key));
-      } else if (!isEnumeratedAttr(key)) {
-        elm.removeAttribute(key);
-      }
-    }
-  }
-}
-
-function setAttr (el, key, value) {
-  if (el.tagName.indexOf('-') > -1) {
-    baseSetAttr(el, key, value);
-  } else if (isBooleanAttr(key)) {
-    // set attribute for blank value
-    // e.g. <option disabled>Select one</option>
-    if (isFalsyAttrValue(value)) {
-      el.removeAttribute(key);
-    } else {
-      // technically allowfullscreen is a boolean attribute for <iframe>,
-      // but Flash expects a value of "true" when used on <embed> tag
-      value = key === 'allowfullscreen' && el.tagName === 'EMBED'
-        ? 'true'
-        : key;
-      el.setAttribute(key, value);
-    }
-  } else if (isEnumeratedAttr(key)) {
-    el.setAttribute(key, 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 {
-    baseSetAttr(el, key, value);
-  }
-}
-
-function baseSetAttr (el, key, value) {
-  if (isFalsyAttrValue(value)) {
-    el.removeAttribute(key);
-  } else {
-    // #7138: IE10 & 11 fires input event when setting placeholder on
-    // <textarea>... block the first input event and remove the blocker
-    // immediately.
-    /* istanbul ignore if */
-    if (
-      isIE && !isIE9 &&
-      (el.tagName === 'TEXTAREA' || el.tagName === 'INPUT') &&
-      key === 'placeholder' && !el.__ieph
-    ) {
-      var blocker = function (e) {
-        e.stopImmediatePropagation();
-        el.removeEventListener('input', blocker);
-      };
-      el.addEventListener('input', blocker);
-      // $flow-disable-line
-      el.__ieph = true; /* IE placeholder patched */
-    }
-    el.setAttribute(key, value);
-  }
-}
-
-var attrs = {
-  create: updateAttrs,
-  update: updateAttrs
-};
-
-/*  */
-
-function updateClass (oldVnode, vnode) {
-  var el = vnode.elm;
-  var data = vnode.data;
-  var oldData = oldVnode.data;
-  if (
-    isUndef(data.staticClass) &&
-    isUndef(data.class) && (
-      isUndef(oldData) || (
-        isUndef(oldData.staticClass) &&
-        isUndef(oldData.class)
-      )
-    )
-  ) {
-    return
-  }
-
-  var cls = genClassForVnode(vnode);
-
-  // handle transition classes
-  var transitionClass = el._transitionClasses;
-  if (isDef(transitionClass)) {
-    cls = concat(cls, stringifyClass(transitionClass));
-  }
-
-  // set the class
-  if (cls !== el._prevClass) {
-    el.setAttribute('class', cls);
-    el._prevClass = cls;
-  }
-}
-
-var klass = {
-  create: updateClass,
-  update: updateClass
-};
-
-/*  */
-
-/*  */
-
-/*  */
-
-/*  */
-
-// in some cases, the event used has to be determined at runtime
-// so we used some reserved tokens during compile.
-var RANGE_TOKEN = '__r';
-var CHECKBOX_RADIO_TOKEN = '__c';
-
-/*  */
-
-// normalize v-model event tokens that can only be determined at runtime.
-// it's important to place the event as the first in the array because
-// the whole point is ensuring the v-model callback gets called before
-// user-attached handlers.
-function normalizeEvents (on) {
-  /* istanbul ignore if */
-  if (isDef(on[RANGE_TOKEN])) {
-    // IE input[type=range] only supports `change` event
-    var event = isIE ? 'change' : 'input';
-    on[event] = [].concat(on[RANGE_TOKEN], on[event] || []);
-    delete on[RANGE_TOKEN];
-  }
-  // This was originally intended to fix #4521 but no longer necessary
-  // after 2.5. Keeping it for backwards compat with generated code from < 2.4
-  /* istanbul ignore if */
-  if (isDef(on[CHECKBOX_RADIO_TOKEN])) {
-    on.change = [].concat(on[CHECKBOX_RADIO_TOKEN], on.change || []);
-    delete on[CHECKBOX_RADIO_TOKEN];
-  }
-}
-
-var target$1;
-
-function createOnceHandler$1 (event, handler, capture) {
-  var _target = target$1; // save current target element in closure
-  return function onceHandler () {
-    var res = handler.apply(null, arguments);
-    if (res !== null) {
-      remove$2(event, onceHandler, capture, _target);
-    }
-  }
-}
-
-function add$1 (
-  event,
-  handler,
-  capture,
-  passive
-) {
-  handler = withMacroTask(handler);
-  target$1.addEventListener(
-    event,
-    handler,
-    supportsPassive
-      ? { capture: capture, passive: passive }
-      : capture
-  );
-}
-
-function remove$2 (
-  event,
-  handler,
-  capture,
-  _target
-) {
-  (_target || target$1).removeEventListener(
-    event,
-    handler._withTask || handler,
-    capture
-  );
-}
-
-function updateDOMListeners (oldVnode, vnode) {
-  if (isUndef(oldVnode.data.on) && isUndef(vnode.data.on)) {
-    return
-  }
-  var on = vnode.data.on || {};
-  var oldOn = oldVnode.data.on || {};
-  target$1 = vnode.elm;
-  normalizeEvents(on);
-  updateListeners(on, oldOn, add$1, remove$2, createOnceHandler$1, vnode.context);
-  target$1 = undefined;
-}
-
-var events = {
-  create: updateDOMListeners,
-  update: updateDOMListeners
-};
-
-/*  */
-
-function updateDOMProps (oldVnode, vnode) {
-  if (isUndef(oldVnode.data.domProps) && isUndef(vnode.data.domProps)) {
-    return
-  }
-  var key, cur;
-  var elm = vnode.elm;
-  var oldProps = oldVnode.data.domProps || {};
-  var props = vnode.data.domProps || {};
-  // clone observed objects, as the user probably wants to mutate it
-  if (isDef(props.__ob__)) {
-    props = vnode.data.domProps = extend({}, props);
-  }
-
-  for (key in oldProps) {
-    if (isUndef(props[key])) {
-      elm[key] = '';
-    }
-  }
-  for (key in props) {
-    cur = props[key];
-    // ignore children if the node has textContent or innerHTML,
-    // as these will throw away existing DOM nodes and cause removal errors
-    // on subsequent patches (#3360)
-    if (key === 'textContent' || key === 'innerHTML') {
-      if (vnode.children) { vnode.children.length = 0; }
-      if (cur === oldProps[key]) { continue }
-      // #6601 work around Chrome version <= 55 bug where single textNode
-      // replaced by innerHTML/textContent retains its parentNode property
-      if (elm.childNodes.length === 1) {
-        elm.removeChild(elm.childNodes[0]);
-      }
-    }
-
-    if (key === 'value') {
-      // store value as _value as well since
-      // non-string values will be stringified
-      elm._value = cur;
-      // avoid resetting cursor position when value is the same
-      var strCur = isUndef(cur) ? '' : String(cur);
-      if (shouldUpdateValue(elm, strCur)) {
-        elm.value = strCur;
-      }
-    } else {
-      elm[key] = cur;
-    }
-  }
-}
-
-// check platforms/web/util/attrs.js acceptValue
-
-
-function shouldUpdateValue (elm, checkVal) {
-  return (!elm.composing && (
-    elm.tagName === 'OPTION' ||
-    isNotInFocusAndDirty(elm, checkVal) ||
-    isDirtyWithModifiers(elm, checkVal)
-  ))
-}
-
-function isNotInFocusAndDirty (elm, checkVal) {
-  // return true when textbox (.number and .trim) loses focus and its value is
-  // not equal to the updated value
-  var notInFocus = true;
-  // #6157
-  // work around IE bug when accessing document.activeElement in an iframe
-  try { notInFocus = document.activeElement !== elm; } catch (e) {}
-  return notInFocus && elm.value !== checkVal
-}
-
-function isDirtyWithModifiers (elm, newVal) {
-  var value = elm.value;
-  var modifiers = elm._vModifiers; // injected by v-model runtime
-  if (isDef(modifiers)) {
-    if (modifiers.lazy) {
-      // inputs with lazy should only be updated when not in focus
-      return false
-    }
-    if (modifiers.number) {
-      return toNumber(value) !== toNumber(newVal)
-    }
-    if (modifiers.trim) {
-      return value.trim() !== newVal.trim()
-    }
-  }
-  return value !== newVal
-}
-
-var domProps = {
-  create: updateDOMProps,
-  update: updateDOMProps
-};
-
-/*  */
-
-var parseStyleText = cached(function (cssText) {
-  var res = {};
-  var listDelimiter = /;(?![^(]*\))/g;
-  var propertyDelimiter = /:(.+)/;
-  cssText.split(listDelimiter).forEach(function (item) {
-    if (item) {
-      var tmp = item.split(propertyDelimiter);
-      tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim());
-    }
-  });
-  return res
-});
-
-// merge static and dynamic style data on the same vnode
-function normalizeStyleData (data) {
-  var style = normalizeStyleBinding(data.style);
-  // static style is pre-processed into an object during compilation
-  // and is always a fresh object, so it's safe to merge into it
-  return data.staticStyle
-    ? extend(data.staticStyle, style)
-    : style
-}
-
-// normalize possible array / string values into Object
-function normalizeStyleBinding (bindingStyle) {
-  if (Array.isArray(bindingStyle)) {
-    return toObject(bindingStyle)
-  }
-  if (typeof bindingStyle === 'string') {
-    return parseStyleText(bindingStyle)
-  }
-  return bindingStyle
-}
-
-/**
- * parent component style should be after child's
- * so that parent component's style could override it
- */
-function getStyle (vnode, checkChild) {
-  var res = {};
-  var styleData;
-
-  if (checkChild) {
-    var childNode = vnode;
-    while (childNode.componentInstance) {
-      childNode = childNode.componentInstance._vnode;
-      if (
-        childNode && childNode.data &&
-        (styleData = normalizeStyleData(childNode.data))
-      ) {
-        extend(res, styleData);
-      }
-    }
-  }
-
-  if ((styleData = normalizeStyleData(vnode.data))) {
-    extend(res, styleData);
-  }
-
-  var parentNode = vnode;
-  while ((parentNode = parentNode.parent)) {
-    if (parentNode.data && (styleData = normalizeStyleData(parentNode.data))) {
-      extend(res, styleData);
-    }
-  }
-  return res
-}
-
-/*  */
-
-var cssVarRE = /^--/;
-var importantRE = /\s*!important$/;
-var setProp = function (el, name, val) {
-  /* istanbul ignore if */
-  if (cssVarRE.test(name)) {
-    el.style.setProperty(name, val);
-  } else if (importantRE.test(val)) {
-    el.style.setProperty(name, val.replace(importantRE, ''), 'important');
-  } else {
-    var normalizedName = normalize(name);
-    if (Array.isArray(val)) {
-      // Support values array created by autoprefixer, e.g.
-      // {display: ["-webkit-box", "-ms-flexbox", "flex"]}
-      // Set them one by one, and the browser will only set those it can recognize
-      for (var i = 0, len = val.length; i < len; i++) {
-        el.style[normalizedName] = val[i];
-      }
-    } else {
-      el.style[normalizedName] = val;
-    }
-  }
-};
-
-var vendorNames = ['Webkit', 'Moz', 'ms'];
-
-var emptyStyle;
-var normalize = cached(function (prop) {
-  emptyStyle = emptyStyle || document.createElement('div').style;
-  prop = camelize(prop);
-  if (prop !== 'filter' && (prop in emptyStyle)) {
-    return prop
-  }
-  var capName = prop.charAt(0).toUpperCase() + prop.slice(1);
-  for (var i = 0; i < vendorNames.length; i++) {
-    var name = vendorNames[i] + capName;
-    if (name in emptyStyle) {
-      return name
-    }
-  }
-});
-
-function updateStyle (oldVnode, vnode) {
-  var data = vnode.data;
-  var oldData = oldVnode.data;
-
-  if (isUndef(data.staticStyle) && isUndef(data.style) &&
-    isUndef(oldData.staticStyle) && isUndef(oldData.style)
-  ) {
-    return
-  }
-
-  var cur, name;
-  var el = vnode.elm;
-  var oldStaticStyle = oldData.staticStyle;
-  var oldStyleBinding = oldData.normalizedStyle || oldData.style || {};
-
-  // if static style exists, stylebinding already merged into it when doing normalizeStyleData
-  var oldStyle = oldStaticStyle || oldStyleBinding;
-
-  var style = normalizeStyleBinding(vnode.data.style) || {};
-
-  // store normalized style under a different key for next diff
-  // make sure to clone it if it's reactive, since the user likely wants
-  // to mutate it.
-  vnode.data.normalizedStyle = isDef(style.__ob__)
-    ? extend({}, style)
-    : style;
-
-  var newStyle = getStyle(vnode, true);
-
-  for (name in oldStyle) {
-    if (isUndef(newStyle[name])) {
-      setProp(el, name, '');
-    }
-  }
-  for (name in newStyle) {
-    cur = newStyle[name];
-    if (cur !== oldStyle[name]) {
-      // ie9 setting to null has no effect, must use empty string
-      setProp(el, name, cur == null ? '' : cur);
-    }
-  }
-}
-
-var style = {
-  create: updateStyle,
-  update: updateStyle
-};
-
-/*  */
-
-var whitespaceRE = /\s+/;
-
-/**
- * Add class with compatibility for SVG since classList is not supported on
- * SVG elements in IE
- */
-function addClass (el, cls) {
-  /* istanbul ignore if */
-  if (!cls || !(cls = cls.trim())) {
-    return
-  }
-
-  /* istanbul ignore else */
-  if (el.classList) {
-    if (cls.indexOf(' ') > -1) {
-      cls.split(whitespaceRE).forEach(function (c) { return el.classList.add(c); });
-    } else {
-      el.classList.add(cls);
-    }
-  } else {
-    var cur = " " + (el.getAttribute('class') || '') + " ";
-    if (cur.indexOf(' ' + cls + ' ') < 0) {
-      el.setAttribute('class', (cur + cls).trim());
-    }
-  }
-}
-
-/**
- * Remove class with compatibility for SVG since classList is not supported on
- * SVG elements in IE
- */
-function removeClass (el, cls) {
-  /* istanbul ignore if */
-  if (!cls || !(cls = cls.trim())) {
-    return
-  }
-
-  /* istanbul ignore else */
-  if (el.classList) {
-    if (cls.indexOf(' ') > -1) {
-      cls.split(whitespaceRE).forEach(function (c) { return el.classList.remove(c); });
-    } else {
-      el.classList.remove(cls);
-    }
-    if (!el.classList.length) {
-      el.removeAttribute('class');
-    }
-  } else {
-    var cur = " " + (el.getAttribute('class') || '') + " ";
-    var tar = ' ' + cls + ' ';
-    while (cur.indexOf(tar) >= 0) {
-      cur = cur.replace(tar, ' ');
-    }
-    cur = cur.trim();
-    if (cur) {
-      el.setAttribute('class', cur);
-    } else {
-      el.removeAttribute('class');
-    }
-  }
-}
-
-/*  */
-
-function resolveTransition (def$$1) {
-  if (!def$$1) {
-    return
-  }
-  /* istanbul ignore else */
-  if (typeof def$$1 === 'object') {
-    var res = {};
-    if (def$$1.css !== false) {
-      extend(res, autoCssTransition(def$$1.name || 'v'));
-    }
-    extend(res, def$$1);
-    return res
-  } else if (typeof def$$1 === 'string') {
-    return autoCssTransition(def$$1)
-  }
-}
-
-var autoCssTransition = cached(function (name) {
-  return {
-    enterClass: (name + "-enter"),
-    enterToClass: (name + "-enter-to"),
-    enterActiveClass: (name + "-enter-active"),
-    leaveClass: (name + "-leave"),
-    leaveToClass: (name + "-leave-to"),
-    leaveActiveClass: (name + "-leave-active")
-  }
-});
-
-var hasTransition = inBrowser && !isIE9;
-var TRANSITION = 'transition';
-var ANIMATION = 'animation';
-
-// Transition property/event sniffing
-var transitionProp = 'transition';
-var transitionEndEvent = 'transitionend';
-var animationProp = 'animation';
-var animationEndEvent = 'animationend';
-if (hasTransition) {
-  /* istanbul ignore if */
-  if (window.ontransitionend === undefined &&
-    window.onwebkittransitionend !== undefined
-  ) {
-    transitionProp = 'WebkitTransition';
-    transitionEndEvent = 'webkitTransitionEnd';
-  }
-  if (window.onanimationend === undefined &&
-    window.onwebkitanimationend !== undefined
-  ) {
-    animationProp = 'WebkitAnimation';
-    animationEndEvent = 'webkitAnimationEnd';
-  }
-}
-
-// binding to window is necessary to make hot reload work in IE in strict mode
-var raf = inBrowser
-  ? window.requestAnimationFrame
-    ? window.requestAnimationFrame.bind(window)
-    : setTimeout
-  : /* istanbul ignore next */ function (fn) { return fn(); };
-
-function nextFrame (fn) {
-  raf(function () {
-    raf(fn);
-  });
-}
-
-function addTransitionClass (el, cls) {
-  var transitionClasses = el._transitionClasses || (el._transitionClasses = []);
-  if (transitionClasses.indexOf(cls) < 0) {
-    transitionClasses.push(cls);
-    addClass(el, cls);
-  }
-}
-
-function removeTransitionClass (el, cls) {
-  if (el._transitionClasses) {
-    remove(el._transitionClasses, cls);
-  }
-  removeClass(el, cls);
-}
-
-function whenTransitionEnds (
-  el,
-  expectedType,
-  cb
-) {
-  var ref = getTransitionInfo(el, expectedType);
-  var type = ref.type;
-  var timeout = ref.timeout;
-  var propCount = ref.propCount;
-  if (!type) { return cb() }
-  var event = type === TRANSITION ? transitionEndEvent : animationEndEvent;
-  var ended = 0;
-  var end = function () {
-    el.removeEventListener(event, onEnd);
-    cb();
-  };
-  var onEnd = function (e) {
-    if (e.target === el) {
-      if (++ended >= propCount) {
-        end();
-      }
-    }
-  };
-  setTimeout(function () {
-    if (ended < propCount) {
-      end();
-    }
-  }, timeout + 1);
-  el.addEventListener(event, onEnd);
-}
-
-var transformRE = /\b(transform|all)(,|$)/;
-
-function getTransitionInfo (el, expectedType) {
-  var styles = window.getComputedStyle(el);
-  // JSDOM may return undefined for transition properties
-  var transitionDelays = (styles[transitionProp + 'Delay'] || '').split(', ');
-  var transitionDurations = (styles[transitionProp + 'Duration'] || '').split(', ');
-  var transitionTimeout = getTimeout(transitionDelays, transitionDurations);
-  var animationDelays = (styles[animationProp + 'Delay'] || '').split(', ');
-  var animationDurations = (styles[animationProp + 'Duration'] || '').split(', ');
-  var animationTimeout = getTimeout(animationDelays, animationDurations);
-
-  var type;
-  var timeout = 0;
-  var propCount = 0;
-  /* istanbul ignore if */
-  if (expectedType === TRANSITION) {
-    if (transitionTimeout > 0) {
-      type = TRANSITION;
-      timeout = transitionTimeout;
-      propCount = transitionDurations.length;
-    }
-  } else if (expectedType === ANIMATION) {
-    if (animationTimeout > 0) {
-      type = ANIMATION;
-      timeout = animationTimeout;
-      propCount = animationDurations.length;
-    }
-  } else {
-    timeout = Math.max(transitionTimeout, animationTimeout);
-    type = timeout > 0
-      ? transitionTimeout > animationTimeout
-        ? TRANSITION
-        : ANIMATION
-      : null;
-    propCount = type
-      ? type === TRANSITION
-        ? transitionDurations.length
-        : animationDurations.length
-      : 0;
-  }
-  var hasTransform =
-    type === TRANSITION &&
-    transformRE.test(styles[transitionProp + 'Property']);
-  return {
-    type: type,
-    timeout: timeout,
-    propCount: propCount,
-    hasTransform: hasTransform
-  }
-}
-
-function getTimeout (delays, durations) {
-  /* istanbul ignore next */
-  while (delays.length < durations.length) {
-    delays = delays.concat(delays);
-  }
-
-  return Math.max.apply(null, durations.map(function (d, i) {
-    return toMs(d) + toMs(delays[i])
-  }))
-}
-
-// Old versions of Chromium (below 61.0.3163.100) formats floating pointer numbers
-// in a locale-dependent way, using a comma instead of a dot.
-// If comma is not replaced with a dot, the input will be rounded down (i.e. acting
-// as a floor function) causing unexpected behaviors
-function toMs (s) {
-  return Number(s.slice(0, -1).replace(',', '.')) * 1000
-}
-
-/*  */
-
-function enter (vnode, toggleDisplay) {
-  var el = vnode.elm;
-
-  // call leave callback now
-  if (isDef(el._leaveCb)) {
-    el._leaveCb.cancelled = true;
-    el._leaveCb();
-  }
-
-  var data = resolveTransition(vnode.data.transition);
-  if (isUndef(data)) {
-    return
-  }
-
-  /* istanbul ignore if */
-  if (isDef(el._enterCb) || el.nodeType !== 1) {
-    return
-  }
-
-  var css = data.css;
-  var type = data.type;
-  var enterClass = data.enterClass;
-  var enterToClass = data.enterToClass;
-  var enterActiveClass = data.enterActiveClass;
-  var appearClass = data.appearClass;
-  var appearToClass = data.appearToClass;
-  var appearActiveClass = data.appearActiveClass;
-  var beforeEnter = data.beforeEnter;
-  var enter = data.enter;
-  var afterEnter = data.afterEnter;
-  var enterCancelled = data.enterCancelled;
-  var beforeAppear = data.beforeAppear;
-  var appear = data.appear;
-  var afterAppear = data.afterAppear;
-  var appearCancelled = data.appearCancelled;
-  var duration = data.duration;
-
-  // activeInstance will always be the <transition> component managing this
-  // transition. One edge case to check is when the <transition> is placed
-  // as the root node of a child component. In that case we need to check
-  // <transition>'s parent for appear check.
-  var context = activeInstance;
-  var transitionNode = activeInstance.$vnode;
-  while (transitionNode && transitionNode.parent) {
-    transitionNode = transitionNode.parent;
-    context = transitionNode.context;
-  }
-
-  var isAppear = !context._isMounted || !vnode.isRootInsert;
-
-  if (isAppear && !appear && appear !== '') {
-    return
-  }
-
-  var startClass = isAppear && appearClass
-    ? appearClass
-    : enterClass;
-  var activeClass = isAppear && appearActiveClass
-    ? appearActiveClass
-    : enterActiveClass;
-  var toClass = isAppear && appearToClass
-    ? appearToClass
-    : enterToClass;
-
-  var beforeEnterHook = isAppear
-    ? (beforeAppear || beforeEnter)
-    : beforeEnter;
-  var enterHook = isAppear
-    ? (typeof appear === 'function' ? appear : enter)
-    : enter;
-  var afterEnterHook = isAppear
-    ? (afterAppear || afterEnter)
-    : afterEnter;
-  var enterCancelledHook = isAppear
-    ? (appearCancelled || enterCancelled)
-    : enterCancelled;
-
-  var explicitEnterDuration = toNumber(
-    isObject(duration)
-      ? duration.enter
-      : duration
-  );
-
-  if (process.env.NODE_ENV !== 'production' && explicitEnterDuration != null) {
-    checkDuration(explicitEnterDuration, 'enter', vnode);
-  }
-
-  var expectsCSS = css !== false && !isIE9;
-  var userWantsControl = getHookArgumentsLength(enterHook);
-
-  var cb = el._enterCb = once(function () {
-    if (expectsCSS) {
-      removeTransitionClass(el, toClass);
-      removeTransitionClass(el, activeClass);
-    }
-    if (cb.cancelled) {
-      if (expectsCSS) {
-        removeTransitionClass(el, startClass);
-      }
-      enterCancelledHook && enterCancelledHook(el);
-    } else {
-      afterEnterHook && afterEnterHook(el);
-    }
-    el._enterCb = null;
-  });
-
-  if (!vnode.data.show) {
-    // remove pending leave element on enter by injecting an insert hook
-    mergeVNodeHook(vnode, 'insert', function () {
-      var parent = el.parentNode;
-      var pendingNode = parent && parent._pending && parent._pending[vnode.key];
-      if (pendingNode &&
-        pendingNode.tag === vnode.tag &&
-        pendingNode.elm._leaveCb
-      ) {
-        pendingNode.elm._leaveCb();
-      }
-      enterHook && enterHook(el, cb);
-    });
-  }
-
-  // start enter transition
-  beforeEnterHook && beforeEnterHook(el);
-  if (expectsCSS) {
-    addTransitionClass(el, startClass);
-    addTransitionClass(el, activeClass);
-    nextFrame(function () {
-      removeTransitionClass(el, startClass);
-      if (!cb.cancelled) {
-        addTransitionClass(el, toClass);
-        if (!userWantsControl) {
-          if (isValidDuration(explicitEnterDuration)) {
-            setTimeout(cb, explicitEnterDuration);
-          } else {
-            whenTransitionEnds(el, type, cb);
-          }
-        }
-      }
-    });
-  }
-
-  if (vnode.data.show) {
-    toggleDisplay && toggleDisplay();
-    enterHook && enterHook(el, cb);
-  }
-
-  if (!expectsCSS && !userWantsControl) {
-    cb();
-  }
-}
-
-function leave (vnode, rm) {
-  var el = vnode.elm;
-
-  // call enter callback now
-  if (isDef(el._enterCb)) {
-    el._enterCb.cancelled = true;
-    el._enterCb();
-  }
-
-  var data = resolveTransition(vnode.data.transition);
-  if (isUndef(data) || el.nodeType !== 1) {
-    return rm()
-  }
-
-  /* istanbul ignore if */
-  if (isDef(el._leaveCb)) {
-    return
-  }
-
-  var css = data.css;
-  var type = data.type;
-  var leaveClass = data.leaveClass;
-  var leaveToClass = data.leaveToClass;
-  var leaveActiveClass = data.leaveActiveClass;
-  var beforeLeave = data.beforeLeave;
-  var leave = data.leave;
-  var afterLeave = data.afterLeave;
-  var leaveCancelled = data.leaveCancelled;
-  var delayLeave = data.delayLeave;
-  var duration = data.duration;
-
-  var expectsCSS = css !== false && !isIE9;
-  var userWantsControl = getHookArgumentsLength(leave);
-
-  var explicitLeaveDuration = toNumber(
-    isObject(duration)
-      ? duration.leave
-      : duration
-  );
-
-  if (process.env.NODE_ENV !== 'production' && isDef(explicitLeaveDuration)) {
-    checkDuration(explicitLeaveDuration, 'leave', vnode);
-  }
-
-  var cb = el._leaveCb = once(function () {
-    if (el.parentNode && el.parentNode._pending) {
-      el.parentNode._pending[vnode.key] = null;
-    }
-    if (expectsCSS) {
-      removeTransitionClass(el, leaveToClass);
-      removeTransitionClass(el, leaveActiveClass);
-    }
-    if (cb.cancelled) {
-      if (expectsCSS) {
-        removeTransitionClass(el, leaveClass);
-      }
-      leaveCancelled && leaveCancelled(el);
-    } else {
-      rm();
-      afterLeave && afterLeave(el);
-    }
-    el._leaveCb = null;
-  });
-
-  if (delayLeave) {
-    delayLeave(performLeave);
-  } else {
-    performLeave();
-  }
-
-  function performLeave () {
-    // the delayed leave may have already been cancelled
-    if (cb.cancelled) {
-      return
-    }
-    // record leaving element
-    if (!vnode.data.show && el.parentNode) {
-      (el.parentNode._pending || (el.parentNode._pending = {}))[(vnode.key)] = vnode;
-    }
-    beforeLeave && beforeLeave(el);
-    if (expectsCSS) {
-      addTransitionClass(el, leaveClass);
-      addTransitionClass(el, leaveActiveClass);
-      nextFrame(function () {
-        removeTransitionClass(el, leaveClass);
-        if (!cb.cancelled) {
-          addTransitionClass(el, leaveToClass);
-          if (!userWantsControl) {
-            if (isValidDuration(explicitLeaveDuration)) {
-              setTimeout(cb, explicitLeaveDuration);
-            } else {
-              whenTransitionEnds(el, type, cb);
-            }
-          }
-        }
-      });
-    }
-    leave && leave(el, cb);
-    if (!expectsCSS && !userWantsControl) {
-      cb();
-    }
-  }
-}
-
-// only used in dev mode
-function checkDuration (val, name, vnode) {
-  if (typeof val !== 'number') {
-    warn(
-      "<transition> explicit " + name + " duration is not a valid number - " +
-      "got " + (JSON.stringify(val)) + ".",
-      vnode.context
-    );
-  } else if (isNaN(val)) {
-    warn(
-      "<transition> explicit " + name + " duration is NaN - " +
-      'the duration expression might be incorrect.',
-      vnode.context
-    );
-  }
-}
-
-function isValidDuration (val) {
-  return typeof val === 'number' && !isNaN(val)
-}
-
-/**
- * Normalize a transition hook's argument length. The hook may be:
- * - a merged hook (invoker) with the original in .fns
- * - a wrapped component method (check ._length)
- * - a plain function (.length)
- */
-function getHookArgumentsLength (fn) {
-  if (isUndef(fn)) {
-    return false
-  }
-  var invokerFns = fn.fns;
-  if (isDef(invokerFns)) {
-    // invoker
-    return getHookArgumentsLength(
-      Array.isArray(invokerFns)
-        ? invokerFns[0]
-        : invokerFns
-    )
-  } else {
-    return (fn._length || fn.length) > 1
-  }
-}
-
-function _enter (_, vnode) {
-  if (vnode.data.show !== true) {
-    enter(vnode);
-  }
-}
-
-var transition = inBrowser ? {
-  create: _enter,
-  activate: _enter,
-  remove: function remove$$1 (vnode, rm) {
-    /* istanbul ignore else */
-    if (vnode.data.show !== true) {
-      leave(vnode, rm);
-    } else {
-      rm();
-    }
-  }
-} : {};
-
-var platformModules = [
-  attrs,
-  klass,
-  events,
-  domProps,
-  style,
-  transition
-];
-
-/*  */
-
-// the directive module should be applied last, after all
-// built-in modules have been applied.
-var modules = platformModules.concat(baseModules);
-
-var patch = createPatchFunction({ nodeOps: nodeOps, modules: modules });
-
-/**
- * Not type checking this file because flow doesn't like attaching
- * properties to Elements.
- */
-
-/* istanbul ignore if */
-if (isIE9) {
-  // http://www.matts411.com/post/internet-explorer-9-oninput/
-  document.addEventListener('selectionchange', function () {
-    var el = document.activeElement;
-    if (el && el.vmodel) {
-      trigger(el, 'input');
-    }
-  });
-}
-
-var directive = {
-  inserted: function inserted (el, binding, vnode, oldVnode) {
-    if (vnode.tag === 'select') {
-      // #6903
-      if (oldVnode.elm && !oldVnode.elm._vOptions) {
-        mergeVNodeHook(vnode, 'postpatch', function () {
-          directive.componentUpdated(el, binding, vnode);
-        });
-      } else {
-        setSelected(el, binding, vnode.context);
-      }
-      el._vOptions = [].map.call(el.options, getValue);
-    } else if (vnode.tag === 'textarea' || isTextInputType(el.type)) {
-      el._vModifiers = binding.modifiers;
-      if (!binding.modifiers.lazy) {
-        el.addEventListener('compositionstart', onCompositionStart);
-        el.addEventListener('compositionend', onCompositionEnd);
-        // Safari < 10.2 & UIWebView doesn't fire compositionend when
-        // switching focus before confirming composition choice
-        // this also fixes the issue where some browsers e.g. iOS Chrome
-        // fires "change" instead of "input" on autocomplete.
-        el.addEventListener('change', onCompositionEnd);
-        /* istanbul ignore if */
-        if (isIE9) {
-          el.vmodel = true;
-        }
-      }
-    }
-  },
-
-  componentUpdated: function componentUpdated (el, binding, vnode) {
-    if (vnode.tag === 'select') {
-      setSelected(el, binding, vnode.context);
-      // in case the options rendered by v-for have changed,
-      // it's possible that the value is out-of-sync with the rendered options.
-      // detect such cases and filter out values that no longer has a matching
-      // option in the DOM.
-      var prevOptions = el._vOptions;
-      var curOptions = el._vOptions = [].map.call(el.options, getValue);
-      if (curOptions.some(function (o, i) { return !looseEqual(o, prevOptions[i]); })) {
-        // trigger change event if
-        // no matching option found for at least one value
-        var needReset = el.multiple
-          ? binding.value.some(function (v) { return hasNoMatchingOption(v, curOptions); })
-          : binding.value !== binding.oldValue && hasNoMatchingOption(binding.value, curOptions);
-        if (needReset) {
-          trigger(el, 'change');
-        }
-      }
-    }
-  }
-};
-
-function setSelected (el, binding, vm) {
-  actuallySetSelected(el, binding, vm);
-  /* istanbul ignore if */
-  if (isIE || isEdge) {
-    setTimeout(function () {
-      actuallySetSelected(el, binding, vm);
-    }, 0);
-  }
-}
-
-function actuallySetSelected (el, binding, vm) {
-  var value = binding.value;
-  var isMultiple = el.multiple;
-  if (isMultiple && !Array.isArray(value)) {
-    process.env.NODE_ENV !== '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) {
-  return options.every(function (o) { return !looseEqual(o, value); })
-}
-
-function getValue (option) {
-  return '_value' in option
-    ? option._value
-    : option.value
-}
-
-function onCompositionStart (e) {
-  e.target.composing = true;
-}
-
-function onCompositionEnd (e) {
-  // prevent triggering an input event for no reason
-  if (!e.target.composing) { return }
-  e.target.composing = false;
-  trigger(e.target, 'input');
-}
-
-function trigger (el, type) {
-  var e = document.createEvent('HTMLEvents');
-  e.initEvent(type, true, true);
-  el.dispatchEvent(e);
-}
-
-/*  */
-
-// recursively search for possible transition defined inside the component root
-function locateNode (vnode) {
-  return vnode.componentInstance && (!vnode.data || !vnode.data.transition)
-    ? locateNode(vnode.componentInstance._vnode)
-    : vnode
-}
-
-var show = {
-  bind: function bind (el, ref, vnode) {
-    var value = ref.value;
-
-    vnode = locateNode(vnode);
-    var transition$$1 = vnode.data && vnode.data.transition;
-    var originalDisplay = el.__vOriginalDisplay =
-      el.style.display === 'none' ? '' : el.style.display;
-    if (value && transition$$1) {
-      vnode.data.show = true;
-      enter(vnode, function () {
-        el.style.display = originalDisplay;
-      });
-    } else {
-      el.style.display = value ? originalDisplay : 'none';
-    }
-  },
-
-  update: function update (el, ref, vnode) {
-    var value = ref.value;
-    var oldValue = ref.oldValue;
-
-    /* istanbul ignore if */
-    if (!value === !oldValue) { return }
-    vnode = locateNode(vnode);
-    var transition$$1 = vnode.data && vnode.data.transition;
-    if (transition$$1) {
-      vnode.data.show = true;
-      if (value) {
-        enter(vnode, function () {
-          el.style.display = el.__vOriginalDisplay;
-        });
-      } else {
-        leave(vnode, function () {
-          el.style.display = 'none';
-        });
-      }
-    } else {
-      el.style.display = value ? el.__vOriginalDisplay : 'none';
-    }
-  },
-
-  unbind: function unbind (
-    el,
-    binding,
-    vnode,
-    oldVnode,
-    isDestroy
-  ) {
-    if (!isDestroy) {
-      el.style.display = el.__vOriginalDisplay;
-    }
-  }
-};
-
-var platformDirectives = {
-  model: directive,
-  show: show
-};
-
-/*  */
-
-var transitionProps = {
-  name: String,
-  appear: Boolean,
-  css: Boolean,
-  mode: String,
-  type: String,
-  enterClass: String,
-  leaveClass: String,
-  enterToClass: String,
-  leaveToClass: String,
-  enterActiveClass: String,
-  leaveActiveClass: String,
-  appearClass: String,
-  appearActiveClass: String,
-  appearToClass: String,
-  duration: [Number, String, Object]
-};
-
-// in case the child is also an abstract component, e.g. <keep-alive>
-// we want to recursively retrieve the real component to be rendered
-function getRealChild (vnode) {
-  var compOptions = vnode && vnode.componentOptions;
-  if (compOptions && compOptions.Ctor.options.abstract) {
-    return getRealChild(getFirstComponentChild(compOptions.children))
-  } else {
-    return vnode
-  }
-}
-
-function extractTransitionData (comp) {
-  var data = {};
-  var options = comp.$options;
-  // props
-  for (var key in options.propsData) {
-    data[key] = comp[key];
-  }
-  // events.
-  // extract listeners and pass them directly to the transition methods
-  var listeners = options._parentListeners;
-  for (var key$1 in listeners) {
-    data[camelize(key$1)] = listeners[key$1];
-  }
-  return data
-}
-
-function placeholder (h, rawChild) {
-  if (/\d-keep-alive$/.test(rawChild.tag)) {
-    return h('keep-alive', {
-      props: rawChild.componentOptions.propsData
-    })
-  }
-}
-
-function hasParentTransition (vnode) {
-  while ((vnode = vnode.parent)) {
-    if (vnode.data.transition) {
-      return true
-    }
-  }
-}
-
-function isSameChild (child, oldChild) {
-  return oldChild.key === child.key && oldChild.tag === child.tag
-}
-
-var isNotTextNode = function (c) { return c.tag || isAsyncPlaceholder(c); };
-
-var isVShowDirective = function (d) { return d.name === 'show'; };
-
-var Transition = {
-  name: 'transition',
-  props: transitionProps,
-  abstract: true,
-
-  render: function render (h) {
-    var this$1 = this;
-
-    var children = this.$slots.default;
-    if (!children) {
-      return
-    }
-
-    // filter out text nodes (possible whitespaces)
-    children = children.filter(isNotTextNode);
-    /* istanbul ignore if */
-    if (!children.length) {
-      return
-    }
-
-    // warn multiple elements
-    if (process.env.NODE_ENV !== 'production' && children.length > 1) {
-      warn(
-        '<transition> can only be used on a single element. Use ' +
-        '<transition-group> for lists.',
-        this.$parent
-      );
-    }
-
-    var mode = this.mode;
-
-    // warn invalid mode
-    if (process.env.NODE_ENV !== 'production' &&
-      mode && mode !== 'in-out' && mode !== 'out-in'
-    ) {
-      warn(
-        'invalid <transition> mode: ' + mode,
-        this.$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) + "-";
-    child.key = child.key == null
-      ? child.isComment
-        ? id + 'comment'
-        : id + child.tag
-      : isPrimitive(child.key)
-        ? (String(child.key).indexOf(id) === 0 ? child.key : id + child.key)
-        : child.key;
-
-    var data = (child.data || (child.data = {})).transition = extractTransitionData(this);
-    var oldRawChild = this._vnode;
-    var oldChild = getRealChild(oldRawChild);
-
-    // mark v-show
-    // so that the transition module can hand over the control to the directive
-    if (child.data.directives && child.data.directives.some(isVShowDirective)) {
-      child.data.show = true;
-    }
-
-    if (
-      oldChild &&
-      oldChild.data &&
-      !isSameChild(child, oldChild) &&
-      !isAsyncPlaceholder(oldChild) &&
-      // #6687 component root is a comment node
-      !(oldChild.componentInstance && oldChild.componentInstance._vnode.isComment)
-    ) {
-      // replace old child transition data with fresh one
-      // important for dynamic transitions!
-      var oldData = oldChild.data.transition = extend({}, data);
-      // handle transition mode
-      if (mode === 'out-in') {
-        // return placeholder node and queue update when leave finishes
-        this._leaving = true;
-        mergeVNodeHook(oldData, 'afterLeave', function () {
-          this$1._leaving = false;
-          this$1.$forceUpdate();
-        });
-        return placeholder(h, rawChild)
-      } else if (mode === 'in-out') {
-        if (isAsyncPlaceholder(child)) {
-          return oldRawChild
-        }
-        var delayedLeave;
-        var performLeave = function () { delayedLeave(); };
-        mergeVNodeHook(data, 'afterEnter', performLeave);
-        mergeVNodeHook(data, 'enterCancelled', performLeave);
-        mergeVNodeHook(oldData, 'delayLeave', function (leave) { delayedLeave = leave; });
-      }
-    }
-
-    return rawChild
-  }
-};
-
-/*  */
-
-var props = extend({
-  tag: String,
-  moveClass: String
-}, transitionProps);
-
-delete props.mode;
-
-var TransitionGroup = {
-  props: props,
-
-  beforeMount: function beforeMount () {
-    var this$1 = this;
-
-    var update = this._update;
-    this._update = function (vnode, hydrating) {
-      var restoreActiveInstance = setActiveInstance(this$1);
-      // force removing pass
-      this$1.__patch__(
-        this$1._vnode,
-        this$1.kept,
-        false, // hydrating
-        true // removeOnly (!important, avoids unnecessary moves)
-      );
-      this$1._vnode = this$1.kept;
-      restoreActiveInstance();
-      update.call(this$1, vnode, hydrating);
-    };
-  },
-
-  render: function render (h) {
-    var tag = this.tag || this.$vnode.data.tag || 'span';
-    var map = Object.create(null);
-    var prevChildren = this.prevChildren = this.children;
-    var rawChildren = this.$slots.default || [];
-    var children = this.children = [];
-    var transitionData = extractTransitionData(this);
-
-    for (var i = 0; i < rawChildren.length; i++) {
-      var c = rawChildren[i];
-      if (c.tag) {
-        if (c.key != null && String(c.key).indexOf('__vlist') !== 0) {
-          children.push(c);
-          map[c.key] = c
-          ;(c.data || (c.data = {})).transition = transitionData;
-        } else if (process.env.NODE_ENV !== 'production') {
-          var opts = c.componentOptions;
-          var name = opts ? (opts.Ctor.options.name || opts.tag || '') : c.tag;
-          warn(("<transition-group> children must be keyed: <" + name + ">"));
-        }
-      }
-    }
-
-    if (prevChildren) {
-      var kept = [];
-      var removed = [];
-      for (var i$1 = 0; i$1 < prevChildren.length; i$1++) {
-        var c$1 = prevChildren[i$1];
-        c$1.data.transition = transitionData;
-        c$1.data.pos = c$1.elm.getBoundingClientRect();
-        if (map[c$1.key]) {
-          kept.push(c$1);
-        } else {
-          removed.push(c$1);
-        }
-      }
-      this.kept = h(tag, null, kept);
-      this.removed = removed;
-    }
-
-    return h(tag, null, children)
-  },
-
-  updated: function updated () {
-    var children = this.prevChildren;
-    var moveClass = this.moveClass || ((this.name || 'v') + '-move');
-    if (!children.length || !this.hasMove(children[0].elm, moveClass)) {
-      return
-    }
-
-    // we divide the work into three loops to avoid mixing DOM reads and writes
-    // in each iteration - which helps prevent layout thrashing.
-    children.forEach(callPendingCbs);
-    children.forEach(recordPosition);
-    children.forEach(applyTranslation);
-
-    // force reflow to put everything in position
-    // assign to this to avoid being removed in tree-shaking
-    // $flow-disable-line
-    this._reflow = document.body.offsetHeight;
-
-    children.forEach(function (c) {
-      if (c.data.moved) {
-        var el = c.elm;
-        var s = el.style;
-        addTransitionClass(el, moveClass);
-        s.transform = s.WebkitTransform = s.transitionDuration = '';
-        el.addEventListener(transitionEndEvent, el._moveCb = function cb (e) {
-          if (e && e.target !== el) {
-            return
-          }
-          if (!e || /transform$/.test(e.propertyName)) {
-            el.removeEventListener(transitionEndEvent, cb);
-            el._moveCb = null;
-            removeTransitionClass(el, moveClass);
-          }
-        });
-      }
-    });
-  },
-
-  methods: {
-    hasMove: function hasMove (el, moveClass) {
-      /* istanbul ignore if */
-      if (!hasTransition) {
-        return false
-      }
-      /* istanbul ignore if */
-      if (this._hasMove) {
-        return this._hasMove
-      }
-      // Detect whether an element with the move class applied has
-      // CSS transitions. Since the element may be inside an entering
-      // transition at this very moment, we make a clone of it and remove
-      // all other transition classes applied to ensure only the move class
-      // is applied.
-      var clone = el.cloneNode();
-      if (el._transitionClasses) {
-        el._transitionClasses.forEach(function (cls) { removeClass(clone, cls); });
-      }
-      addClass(clone, moveClass);
-      clone.style.display = 'none';
-      this.$el.appendChild(clone);
-      var info = getTransitionInfo(clone);
-      this.$el.removeChild(clone);
-      return (this._hasMove = info.hasTransform)
-    }
-  }
-};
-
-function callPendingCbs (c) {
-  /* istanbul ignore if */
-  if (c.elm._moveCb) {
-    c.elm._moveCb();
-  }
-  /* istanbul ignore if */
-  if (c.elm._enterCb) {
-    c.elm._enterCb();
-  }
-}
-
-function recordPosition (c) {
-  c.data.newPos = c.elm.getBoundingClientRect();
-}
-
-function applyTranslation (c) {
-  var oldPos = c.data.pos;
-  var newPos = c.data.newPos;
-  var dx = oldPos.left - newPos.left;
-  var dy = oldPos.top - newPos.top;
-  if (dx || dy) {
-    c.data.moved = true;
-    var s = c.elm.style;
-    s.transform = s.WebkitTransform = "translate(" + dx + "px," + dy + "px)";
-    s.transitionDuration = '0s';
-  }
-}
-
-var platformComponents = {
-  Transition: Transition,
-  TransitionGroup: TransitionGroup
-};
-
-/*  */
-
-// install platform specific utils
-Vue.config.mustUseProp = mustUseProp;
-Vue.config.isReservedTag = isReservedTag;
-Vue.config.isReservedAttr = isReservedAttr;
-Vue.config.getTagNamespace = getTagNamespace;
-Vue.config.isUnknownElement = isUnknownElement;
-
-// install platform runtime directives & components
-extend(Vue.options.directives, platformDirectives);
-extend(Vue.options.components, platformComponents);
-
-// install platform patch function
-Vue.prototype.__patch__ = inBrowser ? patch : noop;
-
-// public mount method
-Vue.prototype.$mount = function (
-  el,
-  hydrating
-) {
-  el = el && inBrowser ? query(el) : undefined;
-  return mountComponent(this, el, hydrating)
-};
-
-// devtools global hook
-/* istanbul ignore next */
-if (inBrowser) {
-  setTimeout(function () {
-    if (config.devtools) {
-      if (devtools) {
-        devtools.emit('init', Vue);
-      } else if (
-        process.env.NODE_ENV !== 'production' &&
-        process.env.NODE_ENV !== 'test' &&
-        isChrome
-      ) {
-        console[console.info ? 'info' : 'log'](
-          'Download the Vue Devtools extension for a better development experience:\n' +
-          'https://github.com/vuejs/vue-devtools'
-        );
-      }
-    }
-    if (process.env.NODE_ENV !== 'production' &&
-      process.env.NODE_ENV !== 'test' &&
-      config.productionTip !== false &&
-      typeof console !== 'undefined'
-    ) {
-      console[console.info ? 'info' : 'log'](
-        "You are running Vue in development mode.\n" +
-        "Make sure to turn on production mode when deploying for production.\n" +
-        "See more tips at https://vuejs.org/guide/deployment.html"
-      );
-    }
-  }, 0);
+  module.exports = require('./vue.runtime.common.dev.js')
 }