From 7666e8cb51bda225287b8b1a5f4d708612cc4c18 Mon Sep 17 00:00:00 2001
From: Fabio Manganiello <blacklight86@gmail.com>
Date: Sat, 13 Jul 2019 12:25:02 +0200
Subject: [PATCH] Including vue.min.js instead of vue.js

---
 platypush/backend/http/static/js/lib/vue.js   | 11944 ----------------
 .../backend/http/templates/dashboard.html     |     2 +-
 platypush/backend/http/templates/index.html   |     2 +-
 3 files changed, 2 insertions(+), 11946 deletions(-)
 delete mode 100644 platypush/backend/http/static/js/lib/vue.js

diff --git a/platypush/backend/http/static/js/lib/vue.js b/platypush/backend/http/static/js/lib/vue.js
deleted file mode 100644
index 4ef7ff1b0..000000000
--- a/platypush/backend/http/static/js/lib/vue.js
+++ /dev/null
@@ -1,11944 +0,0 @@
-/*!
- * Vue.js v2.6.10
- * (c) 2014-2019 Evan You
- * Released under the MIT License.
- */
-(function (global, factory) {
-  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
-  typeof define === 'function' && define.amd ? define(factory) :
-  (global = global || self, global.Vue = factory());
-}(this, function () { 'use strict';
-
-  /*  */
-
-  var emptyObject = Object.freeze({});
-
-  // These helpers produce better VM code in JS engines due to their
-  // explicitness and function inlining.
-  function isUndef (v) {
-    return v === undefined || v === null
-  }
-
-  function isDef (v) {
-    return v !== undefined && v !== null
-  }
-
-  function isTrue (v) {
-    return v === true
-  }
-
-  function isFalse (v) {
-    return v === false
-  }
-
-  /**
-   * Check if value is primitive.
-   */
-  function isPrimitive (value) {
-    return (
-      typeof value === 'string' ||
-      typeof value === 'number' ||
-      // $flow-disable-line
-      typeof value === 'symbol' ||
-      typeof value === 'boolean'
-    )
-  }
-
-  /**
-   * Quick object check - this is primarily used to tell
-   * Objects from primitive values when we know the value
-   * is a JSON-compliant type.
-   */
-  function isObject (obj) {
-    return obj !== null && typeof obj === 'object'
-  }
-
-  /**
-   * Get the raw type string of a value, e.g., [object Object].
-   */
-  var _toString = Object.prototype.toString;
-
-  function toRawType (value) {
-    return _toString.call(value).slice(8, -1)
-  }
-
-  /**
-   * Strict object type check. Only returns true
-   * for plain JavaScript objects.
-   */
-  function isPlainObject (obj) {
-    return _toString.call(obj) === '[object Object]'
-  }
-
-  function isRegExp (v) {
-    return _toString.call(v) === '[object RegExp]'
-  }
-
-  /**
-   * Check if val is a valid array index.
-   */
-  function isValidArrayIndex (val) {
-    var n = parseFloat(String(val));
-    return n >= 0 && Math.floor(n) === n && isFinite(val)
-  }
-
-  function isPromise (val) {
-    return (
-      isDef(val) &&
-      typeof val.then === 'function' &&
-      typeof val.catch === 'function'
-    )
-  }
-
-  /**
-   * Convert a value to a string that is actually rendered.
-   */
-  function toString (val) {
-    return val == null
-      ? ''
-      : Array.isArray(val) || (isPlainObject(val) && val.toString === _toString)
-        ? JSON.stringify(val, null, 2)
-        : String(val)
-  }
-
-  /**
-   * Convert an input value to a number for persistence.
-   * If the conversion fails, return original string.
-   */
-  function toNumber (val) {
-    var n = parseFloat(val);
-    return isNaN(n) ? val : n
-  }
-
-  /**
-   * Make a map and return a function for checking if a key
-   * is in that map.
-   */
-  function makeMap (
-    str,
-    expectsLowerCase
-  ) {
-    var map = Object.create(null);
-    var list = str.split(',');
-    for (var i = 0; i < list.length; i++) {
-      map[list[i]] = true;
-    }
-    return expectsLowerCase
-      ? function (val) { return map[val.toLowerCase()]; }
-      : function (val) { return map[val]; }
-  }
-
-  /**
-   * Check if a tag is a built-in tag.
-   */
-  var isBuiltInTag = makeMap('slot,component', true);
-
-  /**
-   * Check if an attribute is a reserved attribute.
-   */
-  var isReservedAttribute = makeMap('key,ref,slot,slot-scope,is');
-
-  /**
-   * Remove an item from an array.
-   */
-  function remove (arr, item) {
-    if (arr.length) {
-      var index = arr.indexOf(item);
-      if (index > -1) {
-        return arr.splice(index, 1)
-      }
-    }
-  }
-
-  /**
-   * Check whether an object has the property.
-   */
-  var hasOwnProperty = Object.prototype.hasOwnProperty;
-  function hasOwn (obj, key) {
-    return hasOwnProperty.call(obj, key)
-  }
-
-  /**
-   * Create a cached version of a pure function.
-   */
-  function cached (fn) {
-    var cache = Object.create(null);
-    return (function cachedFn (str) {
-      var hit = cache[str];
-      return hit || (cache[str] = fn(str))
-    })
-  }
-
-  /**
-   * Camelize a hyphen-delimited string.
-   */
-  var camelizeRE = /-(\w)/g;
-  var camelize = cached(function (str) {
-    return str.replace(camelizeRE, function (_, c) { return c ? c.toUpperCase() : ''; })
-  });
-
-  /**
-   * Capitalize a string.
-   */
-  var capitalize = cached(function (str) {
-    return str.charAt(0).toUpperCase() + str.slice(1)
-  });
-
-  /**
-   * Hyphenate a camelCase string.
-   */
-  var hyphenateRE = /\B([A-Z])/g;
-  var hyphenate = cached(function (str) {
-    return str.replace(hyphenateRE, '-$1').toLowerCase()
-  });
-
-  /**
-   * Simple bind polyfill for environments that do not support it,
-   * e.g., PhantomJS 1.x. Technically, we don't need this anymore
-   * since native bind is now performant enough in most browsers.
-   * But removing it would mean breaking code that was able to run in
-   * PhantomJS 1.x, so this must be kept for backward compatibility.
-   */
-
-  /* istanbul ignore next */
-  function polyfillBind (fn, ctx) {
-    function boundFn (a) {
-      var l = arguments.length;
-      return l
-        ? l > 1
-          ? fn.apply(ctx, arguments)
-          : fn.call(ctx, a)
-        : fn.call(ctx)
-    }
-
-    boundFn._length = fn.length;
-    return boundFn
-  }
-
-  function nativeBind (fn, ctx) {
-    return fn.bind(ctx)
-  }
-
-  var bind = Function.prototype.bind
-    ? nativeBind
-    : polyfillBind;
-
-  /**
-   * Convert an Array-like object to a real Array.
-   */
-  function toArray (list, start) {
-    start = start || 0;
-    var i = list.length - start;
-    var ret = new Array(i);
-    while (i--) {
-      ret[i] = list[i + start];
-    }
-    return ret
-  }
-
-  /**
-   * Mix properties into target object.
-   */
-  function extend (to, _from) {
-    for (var key in _from) {
-      to[key] = _from[key];
-    }
-    return to
-  }
-
-  /**
-   * Merge an Array of Objects into a single Object.
-   */
-  function toObject (arr) {
-    var res = {};
-    for (var i = 0; i < arr.length; i++) {
-      if (arr[i]) {
-        extend(res, arr[i]);
-      }
-    }
-    return res
-  }
-
-  /* eslint-disable no-unused-vars */
-
-  /**
-   * Perform no operation.
-   * Stubbing args to make Flow happy without leaving useless transpiled code
-   * with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/).
-   */
-  function noop (a, b, c) {}
-
-  /**
-   * Always return false.
-   */
-  var no = function (a, b, c) { return false; };
-
-  /* eslint-enable no-unused-vars */
-
-  /**
-   * Return the same value.
-   */
-  var identity = function (_) { return _; };
-
-  /**
-   * Generate a string containing static keys from compiler modules.
-   */
-  function genStaticKeys (modules) {
-    return modules.reduce(function (keys, m) {
-      return keys.concat(m.staticKeys || [])
-    }, []).join(',')
-  }
-
-  /**
-   * Check if two values are loosely equal - that is,
-   * if they are plain objects, do they have the same shape?
-   */
-  function looseEqual (a, b) {
-    if (a === b) { return true }
-    var isObjectA = isObject(a);
-    var isObjectB = isObject(b);
-    if (isObjectA && isObjectB) {
-      try {
-        var isArrayA = Array.isArray(a);
-        var isArrayB = Array.isArray(b);
-        if (isArrayA && isArrayB) {
-          return a.length === b.length && a.every(function (e, i) {
-            return looseEqual(e, b[i])
-          })
-        } else if (a instanceof Date && b instanceof Date) {
-          return a.getTime() === b.getTime()
-        } else if (!isArrayA && !isArrayB) {
-          var keysA = Object.keys(a);
-          var keysB = Object.keys(b);
-          return keysA.length === keysB.length && keysA.every(function (key) {
-            return looseEqual(a[key], b[key])
-          })
-        } else {
-          /* istanbul ignore next */
-          return false
-        }
-      } catch (e) {
-        /* istanbul ignore next */
-        return false
-      }
-    } else if (!isObjectA && !isObjectB) {
-      return String(a) === String(b)
-    } else {
-      return false
-    }
-  }
-
-  /**
-   * Return the first index at which a loosely equal value can be
-   * found in the array (if value is a plain object, the array must
-   * contain an object of the same shape), or -1 if it is not present.
-   */
-  function looseIndexOf (arr, val) {
-    for (var i = 0; i < arr.length; i++) {
-      if (looseEqual(arr[i], val)) { return i }
-    }
-    return -1
-  }
-
-  /**
-   * Ensure a function is called only once.
-   */
-  function once (fn) {
-    var called = false;
-    return function () {
-      if (!called) {
-        called = true;
-        fn.apply(this, arguments);
-      }
-    }
-  }
-
-  var SSR_ATTR = 'data-server-rendered';
-
-  var ASSET_TYPES = [
-    'component',
-    'directive',
-    'filter'
-  ];
-
-  var LIFECYCLE_HOOKS = [
-    'beforeCreate',
-    'created',
-    'beforeMount',
-    'mounted',
-    'beforeUpdate',
-    'updated',
-    'beforeDestroy',
-    'destroyed',
-    'activated',
-    'deactivated',
-    'errorCaptured',
-    'serverPrefetch'
-  ];
-
-  /*  */
-
-
-
-  var config = ({
-    /**
-     * Option merge strategies (used in core/util/options)
-     */
-    // $flow-disable-line
-    optionMergeStrategies: Object.create(null),
-
-    /**
-     * Whether to suppress warnings.
-     */
-    silent: false,
-
-    /**
-     * Show production mode tip message on boot?
-     */
-    productionTip: "development" !== 'production',
-
-    /**
-     * Whether to enable devtools
-     */
-    devtools: "development" !== 'production',
-
-    /**
-     * Whether to record perf
-     */
-    performance: false,
-
-    /**
-     * Error handler for watcher errors
-     */
-    errorHandler: null,
-
-    /**
-     * Warn handler for watcher warns
-     */
-    warnHandler: null,
-
-    /**
-     * Ignore certain custom elements
-     */
-    ignoredElements: [],
-
-    /**
-     * Custom user key aliases for v-on
-     */
-    // $flow-disable-line
-    keyCodes: Object.create(null),
-
-    /**
-     * Check if a tag is reserved so that it cannot be registered as a
-     * component. This is platform-dependent and may be overwritten.
-     */
-    isReservedTag: no,
-
-    /**
-     * Check if an attribute is reserved so that it cannot be used as a component
-     * prop. This is platform-dependent and may be overwritten.
-     */
-    isReservedAttr: no,
-
-    /**
-     * Check if a tag is an unknown element.
-     * Platform-dependent.
-     */
-    isUnknownElement: no,
-
-    /**
-     * Get the namespace of an element
-     */
-    getTagNamespace: noop,
-
-    /**
-     * Parse the real tag name for the specific platform.
-     */
-    parsePlatformTagName: identity,
-
-    /**
-     * Check if an attribute must be bound using property, e.g. value
-     * Platform-dependent.
-     */
-    mustUseProp: no,
-
-    /**
-     * Perform updates asynchronously. Intended to be used by Vue Test Utils
-     * This will significantly reduce performance if set to false.
-     */
-    async: true,
-
-    /**
-     * Exposed for legacy reasons
-     */
-    _lifecycleHooks: LIFECYCLE_HOOKS
-  });
-
-  /*  */
-
-  /**
-   * unicode letters used for parsing html tags, component names and property paths.
-   * using https://www.w3.org/TR/html53/semantics-scripting.html#potentialcustomelementname
-   * skipping \u10000-\uEFFFF due to it freezing up PhantomJS
-   */
-  var unicodeRegExp = /a-zA-Z\u00B7\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u037D\u037F-\u1FFF\u200C-\u200D\u203F-\u2040\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD/;
-
-  /**
-   * Check if a string starts with $ or _
-   */
-  function isReserved (str) {
-    var c = (str + '').charCodeAt(0);
-    return c === 0x24 || c === 0x5F
-  }
-
-  /**
-   * Define a property.
-   */
-  function def (obj, key, val, enumerable) {
-    Object.defineProperty(obj, key, {
-      value: val,
-      enumerable: !!enumerable,
-      writable: true,
-      configurable: true
-    });
-  }
-
-  /**
-   * Parse simple path.
-   */
-  var bailRE = new RegExp(("[^" + (unicodeRegExp.source) + ".$_\\d]"));
-  function parsePath (path) {
-    if (bailRE.test(path)) {
-      return
-    }
-    var segments = path.split('.');
-    return function (obj) {
-      for (var i = 0; i < segments.length; i++) {
-        if (!obj) { return }
-        obj = obj[segments[i]];
-      }
-      return obj
-    }
-  }
-
-  /*  */
-
-  // can we use __proto__?
-  var hasProto = '__proto__' in {};
-
-  // Browser environment sniffing
-  var inBrowser = typeof window !== 'undefined';
-  var inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform;
-  var weexPlatform = inWeex && WXEnvironment.platform.toLowerCase();
-  var UA = inBrowser && window.navigator.userAgent.toLowerCase();
-  var isIE = UA && /msie|trident/.test(UA);
-  var isIE9 = UA && UA.indexOf('msie 9.0') > 0;
-  var isEdge = UA && UA.indexOf('edge/') > 0;
-  var isAndroid = (UA && UA.indexOf('android') > 0) || (weexPlatform === 'android');
-  var isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || (weexPlatform === 'ios');
-  var isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge;
-  var isPhantomJS = UA && /phantomjs/.test(UA);
-  var isFF = UA && UA.match(/firefox\/(\d+)/);
-
-  // Firefox has a "watch" function on Object.prototype...
-  var nativeWatch = ({}).watch;
-
-  var supportsPassive = false;
-  if (inBrowser) {
-    try {
-      var opts = {};
-      Object.defineProperty(opts, 'passive', ({
-        get: function get () {
-          /* istanbul ignore next */
-          supportsPassive = true;
-        }
-      })); // https://github.com/facebook/flow/issues/285
-      window.addEventListener('test-passive', null, opts);
-    } catch (e) {}
-  }
-
-  // this needs to be lazy-evaled because vue may be required before
-  // vue-server-renderer can set VUE_ENV
-  var _isServer;
-  var isServerRendering = function () {
-    if (_isServer === undefined) {
-      /* istanbul ignore if */
-      if (!inBrowser && !inWeex && typeof global !== 'undefined') {
-        // detect presence of vue-server-renderer and avoid
-        // Webpack shimming the process
-        _isServer = global['process'] && global['process'].env.VUE_ENV === 'server';
-      } else {
-        _isServer = false;
-      }
-    }
-    return _isServer
-  };
-
-  // detect devtools
-  var devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__;
-
-  /* istanbul ignore next */
-  function isNative (Ctor) {
-    return typeof Ctor === 'function' && /native code/.test(Ctor.toString())
-  }
-
-  var hasSymbol =
-    typeof Symbol !== 'undefined' && isNative(Symbol) &&
-    typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys);
-
-  var _Set;
-  /* istanbul ignore if */ // $flow-disable-line
-  if (typeof Set !== 'undefined' && isNative(Set)) {
-    // use native Set when available.
-    _Set = Set;
-  } else {
-    // a non-standard Set polyfill that only works with primitive keys.
-    _Set = /*@__PURE__*/(function () {
-      function Set () {
-        this.set = Object.create(null);
-      }
-      Set.prototype.has = function has (key) {
-        return this.set[key] === true
-      };
-      Set.prototype.add = function add (key) {
-        this.set[key] = true;
-      };
-      Set.prototype.clear = function clear () {
-        this.set = Object.create(null);
-      };
-
-      return Set;
-    }());
-  }
-
-  /*  */
-
-  var warn = noop;
-  var tip = noop;
-  var generateComponentTrace = (noop); // work around flow check
-  var formatComponentName = (noop);
-
-  {
-    var hasConsole = typeof console !== 'undefined';
-    var classifyRE = /(?:^|[-_])(\w)/g;
-    var classify = function (str) { return str
-      .replace(classifyRE, function (c) { return c.toUpperCase(); })
-      .replace(/[-_]/g, ''); };
-
-    warn = function (msg, vm) {
-      var trace = vm ? generateComponentTrace(vm) : '';
-
-      if (config.warnHandler) {
-        config.warnHandler.call(null, msg, vm, trace);
-      } else if (hasConsole && (!config.silent)) {
-        console.error(("[Vue warn]: " + msg + trace));
-      }
-    };
-
-    tip = function (msg, vm) {
-      if (hasConsole && (!config.silent)) {
-        console.warn("[Vue tip]: " + msg + (
-          vm ? generateComponentTrace(vm) : ''
-        ));
-      }
-    };
-
-    formatComponentName = function (vm, includeFile) {
-      if (vm.$root === vm) {
-        return '<Root>'
-      }
-      var options = typeof vm === 'function' && vm.cid != null
-        ? vm.options
-        : vm._isVue
-          ? vm.$options || vm.constructor.options
-          : vm;
-      var name = options.name || options._componentTag;
-      var file = options.__file;
-      if (!name && file) {
-        var match = file.match(/([^/\\]+)\.vue$/);
-        name = match && match[1];
-      }
-
-      return (
-        (name ? ("<" + (classify(name)) + ">") : "<Anonymous>") +
-        (file && includeFile !== false ? (" at " + file) : '')
-      )
-    };
-
-    var repeat = function (str, n) {
-      var res = '';
-      while (n) {
-        if (n % 2 === 1) { res += str; }
-        if (n > 1) { str += str; }
-        n >>= 1;
-      }
-      return res
-    };
-
-    generateComponentTrace = function (vm) {
-      if (vm._isVue && vm.$parent) {
-        var tree = [];
-        var currentRecursiveSequence = 0;
-        while (vm) {
-          if (tree.length > 0) {
-            var last = tree[tree.length - 1];
-            if (last.constructor === vm.constructor) {
-              currentRecursiveSequence++;
-              vm = vm.$parent;
-              continue
-            } else if (currentRecursiveSequence > 0) {
-              tree[tree.length - 1] = [last, currentRecursiveSequence];
-              currentRecursiveSequence = 0;
-            }
-          }
-          tree.push(vm);
-          vm = vm.$parent;
-        }
-        return '\n\nfound in\n\n' + tree
-          .map(function (vm, i) { return ("" + (i === 0 ? '---> ' : repeat(' ', 5 + i * 2)) + (Array.isArray(vm)
-              ? ((formatComponentName(vm[0])) + "... (" + (vm[1]) + " recursive calls)")
-              : formatComponentName(vm))); })
-          .join('\n')
-      } else {
-        return ("\n\n(found in " + (formatComponentName(vm)) + ")")
-      }
-    };
-  }
-
-  /*  */
-
-  var uid = 0;
-
-  /**
-   * A dep is an observable that can have multiple
-   * directives subscribing to it.
-   */
-  var Dep = function Dep () {
-    this.id = uid++;
-    this.subs = [];
-  };
-
-  Dep.prototype.addSub = function addSub (sub) {
-    this.subs.push(sub);
-  };
-
-  Dep.prototype.removeSub = function removeSub (sub) {
-    remove(this.subs, sub);
-  };
-
-  Dep.prototype.depend = function depend () {
-    if (Dep.target) {
-      Dep.target.addDep(this);
-    }
-  };
-
-  Dep.prototype.notify = function notify () {
-    // stabilize the subscriber list first
-    var subs = this.subs.slice();
-    if (!config.async) {
-      // subs aren't sorted in scheduler if not running async
-      // we need to sort them now to make sure they fire in correct
-      // order
-      subs.sort(function (a, b) { return a.id - b.id; });
-    }
-    for (var i = 0, l = subs.length; i < l; i++) {
-      subs[i].update();
-    }
-  };
-
-  // The current target watcher being evaluated.
-  // This is globally unique because only one watcher
-  // can be evaluated at a time.
-  Dep.target = null;
-  var targetStack = [];
-
-  function pushTarget (target) {
-    targetStack.push(target);
-    Dep.target = target;
-  }
-
-  function popTarget () {
-    targetStack.pop();
-    Dep.target = targetStack[targetStack.length - 1];
-  }
-
-  /*  */
-
-  var VNode = function VNode (
-    tag,
-    data,
-    children,
-    text,
-    elm,
-    context,
-    componentOptions,
-    asyncFactory
-  ) {
-    this.tag = tag;
-    this.data = data;
-    this.children = children;
-    this.text = text;
-    this.elm = elm;
-    this.ns = undefined;
-    this.context = context;
-    this.fnContext = undefined;
-    this.fnOptions = undefined;
-    this.fnScopeId = undefined;
-    this.key = data && data.key;
-    this.componentOptions = componentOptions;
-    this.componentInstance = undefined;
-    this.parent = undefined;
-    this.raw = false;
-    this.isStatic = false;
-    this.isRootInsert = true;
-    this.isComment = false;
-    this.isCloned = false;
-    this.isOnce = false;
-    this.asyncFactory = asyncFactory;
-    this.asyncMeta = undefined;
-    this.isAsyncPlaceholder = false;
-  };
-
-  var prototypeAccessors = { child: { configurable: true } };
-
-  // DEPRECATED: alias for componentInstance for backwards compat.
-  /* istanbul ignore next */
-  prototypeAccessors.child.get = function () {
-    return this.componentInstance
-  };
-
-  Object.defineProperties( VNode.prototype, prototypeAccessors );
-
-  var createEmptyVNode = function (text) {
-    if ( text === void 0 ) text = '';
-
-    var node = new VNode();
-    node.text = text;
-    node.isComment = true;
-    return node
-  };
-
-  function createTextVNode (val) {
-    return new VNode(undefined, undefined, undefined, String(val))
-  }
-
-  // optimized shallow clone
-  // used for static nodes and slot nodes because they may be reused across
-  // multiple renders, cloning them avoids errors when DOM manipulations rely
-  // on their elm reference.
-  function cloneVNode (vnode) {
-    var cloned = new VNode(
-      vnode.tag,
-      vnode.data,
-      // #7975
-      // clone children array to avoid mutating original in case of cloning
-      // a child.
-      vnode.children && vnode.children.slice(),
-      vnode.text,
-      vnode.elm,
-      vnode.context,
-      vnode.componentOptions,
-      vnode.asyncFactory
-    );
-    cloned.ns = vnode.ns;
-    cloned.isStatic = vnode.isStatic;
-    cloned.key = vnode.key;
-    cloned.isComment = vnode.isComment;
-    cloned.fnContext = vnode.fnContext;
-    cloned.fnOptions = vnode.fnOptions;
-    cloned.fnScopeId = vnode.fnScopeId;
-    cloned.asyncMeta = vnode.asyncMeta;
-    cloned.isCloned = true;
-    return cloned
-  }
-
-  /*
-   * not type checking this file because flow doesn't play well with
-   * dynamically accessing methods on Array prototype
-   */
-
-  var arrayProto = Array.prototype;
-  var arrayMethods = Object.create(arrayProto);
-
-  var methodsToPatch = [
-    'push',
-    'pop',
-    'shift',
-    'unshift',
-    'splice',
-    'sort',
-    'reverse'
-  ];
-
-  /**
-   * Intercept mutating methods and emit events
-   */
-  methodsToPatch.forEach(function (method) {
-    // cache original method
-    var original = arrayProto[method];
-    def(arrayMethods, method, function mutator () {
-      var args = [], len = arguments.length;
-      while ( len-- ) args[ len ] = arguments[ len ];
-
-      var result = original.apply(this, args);
-      var ob = this.__ob__;
-      var inserted;
-      switch (method) {
-        case 'push':
-        case 'unshift':
-          inserted = args;
-          break
-        case 'splice':
-          inserted = args.slice(2);
-          break
-      }
-      if (inserted) { ob.observeArray(inserted); }
-      // notify change
-      ob.dep.notify();
-      return result
-    });
-  });
-
-  /*  */
-
-  var arrayKeys = Object.getOwnPropertyNames(arrayMethods);
-
-  /**
-   * In some cases we may want to disable observation inside a component's
-   * update computation.
-   */
-  var shouldObserve = true;
-
-  function toggleObserving (value) {
-    shouldObserve = value;
-  }
-
-  /**
-   * Observer class that is attached to each observed
-   * object. Once attached, the observer converts the target
-   * object's property keys into getter/setters that
-   * collect dependencies and dispatch updates.
-   */
-  var Observer = function Observer (value) {
-    this.value = value;
-    this.dep = new Dep();
-    this.vmCount = 0;
-    def(value, '__ob__', this);
-    if (Array.isArray(value)) {
-      if (hasProto) {
-        protoAugment(value, arrayMethods);
-      } else {
-        copyAugment(value, arrayMethods, arrayKeys);
-      }
-      this.observeArray(value);
-    } else {
-      this.walk(value);
-    }
-  };
-
-  /**
-   * Walk through all properties and convert them into
-   * getter/setters. This method should only be called when
-   * value type is Object.
-   */
-  Observer.prototype.walk = function walk (obj) {
-    var keys = Object.keys(obj);
-    for (var i = 0; i < keys.length; i++) {
-      defineReactive$$1(obj, keys[i]);
-    }
-  };
-
-  /**
-   * Observe a list of Array items.
-   */
-  Observer.prototype.observeArray = function observeArray (items) {
-    for (var i = 0, l = items.length; i < l; i++) {
-      observe(items[i]);
-    }
-  };
-
-  // helpers
-
-  /**
-   * Augment a target Object or Array by intercepting
-   * the prototype chain using __proto__
-   */
-  function protoAugment (target, src) {
-    /* eslint-disable no-proto */
-    target.__proto__ = src;
-    /* eslint-enable no-proto */
-  }
-
-  /**
-   * Augment a target Object or Array by defining
-   * hidden properties.
-   */
-  /* istanbul ignore next */
-  function copyAugment (target, src, keys) {
-    for (var i = 0, l = keys.length; i < l; i++) {
-      var key = keys[i];
-      def(target, key, src[key]);
-    }
-  }
-
-  /**
-   * Attempt to create an observer instance for a value,
-   * returns the new observer if successfully observed,
-   * or the existing observer if the value already has one.
-   */
-  function observe (value, asRootData) {
-    if (!isObject(value) || value instanceof VNode) {
-      return
-    }
-    var ob;
-    if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {
-      ob = value.__ob__;
-    } else if (
-      shouldObserve &&
-      !isServerRendering() &&
-      (Array.isArray(value) || isPlainObject(value)) &&
-      Object.isExtensible(value) &&
-      !value._isVue
-    ) {
-      ob = new Observer(value);
-    }
-    if (asRootData && ob) {
-      ob.vmCount++;
-    }
-    return ob
-  }
-
-  /**
-   * Define a reactive property on an Object.
-   */
-  function defineReactive$$1 (
-    obj,
-    key,
-    val,
-    customSetter,
-    shallow
-  ) {
-    var dep = new Dep();
-
-    var property = Object.getOwnPropertyDescriptor(obj, key);
-    if (property && property.configurable === false) {
-      return
-    }
-
-    // cater for pre-defined getter/setters
-    var getter = property && property.get;
-    var setter = property && property.set;
-    if ((!getter || setter) && arguments.length === 2) {
-      val = obj[key];
-    }
-
-    var childOb = !shallow && observe(val);
-    Object.defineProperty(obj, key, {
-      enumerable: true,
-      configurable: true,
-      get: function reactiveGetter () {
-        var value = getter ? getter.call(obj) : val;
-        if (Dep.target) {
-          dep.depend();
-          if (childOb) {
-            childOb.dep.depend();
-            if (Array.isArray(value)) {
-              dependArray(value);
-            }
-          }
-        }
-        return value
-      },
-      set: function reactiveSetter (newVal) {
-        var value = getter ? getter.call(obj) : val;
-        /* eslint-disable no-self-compare */
-        if (newVal === value || (newVal !== newVal && value !== value)) {
-          return
-        }
-        /* eslint-enable no-self-compare */
-        if (customSetter) {
-          customSetter();
-        }
-        // #7981: for accessor properties without setter
-        if (getter && !setter) { return }
-        if (setter) {
-          setter.call(obj, newVal);
-        } else {
-          val = newVal;
-        }
-        childOb = !shallow && observe(newVal);
-        dep.notify();
-      }
-    });
-  }
-
-  /**
-   * Set a property on an object. Adds the new property and
-   * triggers change notification if the property doesn't
-   * already exist.
-   */
-  function set (target, key, val) {
-    if (isUndef(target) || isPrimitive(target)
-    ) {
-      warn(("Cannot set reactive property on undefined, null, or primitive value: " + ((target))));
-    }
-    if (Array.isArray(target) && isValidArrayIndex(key)) {
-      target.length = Math.max(target.length, key);
-      target.splice(key, 1, val);
-      return val
-    }
-    if (key in target && !(key in Object.prototype)) {
-      target[key] = val;
-      return val
-    }
-    var ob = (target).__ob__;
-    if (target._isVue || (ob && ob.vmCount)) {
-      warn(
-        'Avoid adding reactive properties to a Vue instance or its root $data ' +
-        'at runtime - declare it upfront in the data option.'
-      );
-      return val
-    }
-    if (!ob) {
-      target[key] = val;
-      return val
-    }
-    defineReactive$$1(ob.value, key, val);
-    ob.dep.notify();
-    return val
-  }
-
-  /**
-   * Delete a property and trigger change if necessary.
-   */
-  function del (target, key) {
-    if (isUndef(target) || isPrimitive(target)
-    ) {
-      warn(("Cannot delete reactive property on undefined, null, or primitive value: " + ((target))));
-    }
-    if (Array.isArray(target) && isValidArrayIndex(key)) {
-      target.splice(key, 1);
-      return
-    }
-    var ob = (target).__ob__;
-    if (target._isVue || (ob && ob.vmCount)) {
-      warn(
-        'Avoid deleting properties on a Vue instance or its root $data ' +
-        '- just set it to null.'
-      );
-      return
-    }
-    if (!hasOwn(target, key)) {
-      return
-    }
-    delete target[key];
-    if (!ob) {
-      return
-    }
-    ob.dep.notify();
-  }
-
-  /**
-   * Collect dependencies on array elements when the array is touched, since
-   * we cannot intercept array element access like property getters.
-   */
-  function dependArray (value) {
-    for (var e = (void 0), i = 0, l = value.length; i < l; i++) {
-      e = value[i];
-      e && e.__ob__ && e.__ob__.dep.depend();
-      if (Array.isArray(e)) {
-        dependArray(e);
-      }
-    }
-  }
-
-  /*  */
-
-  /**
-   * Option overwriting strategies are functions that handle
-   * how to merge a parent option value and a child option
-   * value into the final value.
-   */
-  var strats = config.optionMergeStrategies;
-
-  /**
-   * Options with restrictions
-   */
-  {
-    strats.el = strats.propsData = function (parent, child, vm, key) {
-      if (!vm) {
-        warn(
-          "option \"" + key + "\" can only be used during instance " +
-          'creation with the `new` keyword.'
-        );
-      }
-      return defaultStrat(parent, child)
-    };
-  }
-
-  /**
-   * Helper that recursively merges two data objects together.
-   */
-  function mergeData (to, from) {
-    if (!from) { return to }
-    var key, toVal, fromVal;
-
-    var keys = hasSymbol
-      ? Reflect.ownKeys(from)
-      : Object.keys(from);
-
-    for (var i = 0; i < keys.length; i++) {
-      key = keys[i];
-      // in case the object is already observed...
-      if (key === '__ob__') { continue }
-      toVal = to[key];
-      fromVal = from[key];
-      if (!hasOwn(to, key)) {
-        set(to, key, fromVal);
-      } else if (
-        toVal !== fromVal &&
-        isPlainObject(toVal) &&
-        isPlainObject(fromVal)
-      ) {
-        mergeData(toVal, fromVal);
-      }
-    }
-    return to
-  }
-
-  /**
-   * Data
-   */
-  function mergeDataOrFn (
-    parentVal,
-    childVal,
-    vm
-  ) {
-    if (!vm) {
-      // in a Vue.extend merge, both should be functions
-      if (!childVal) {
-        return parentVal
-      }
-      if (!parentVal) {
-        return childVal
-      }
-      // when parentVal & childVal are both present,
-      // we need to return a function that returns the
-      // merged result of both functions... no need to
-      // check if parentVal is a function here because
-      // it has to be a function to pass previous merges.
-      return function mergedDataFn () {
-        return mergeData(
-          typeof childVal === 'function' ? childVal.call(this, this) : childVal,
-          typeof parentVal === 'function' ? parentVal.call(this, this) : parentVal
-        )
-      }
-    } else {
-      return function mergedInstanceDataFn () {
-        // instance merge
-        var instanceData = typeof childVal === 'function'
-          ? childVal.call(vm, vm)
-          : childVal;
-        var defaultData = typeof parentVal === 'function'
-          ? parentVal.call(vm, vm)
-          : parentVal;
-        if (instanceData) {
-          return mergeData(instanceData, defaultData)
-        } else {
-          return defaultData
-        }
-      }
-    }
-  }
-
-  strats.data = function (
-    parentVal,
-    childVal,
-    vm
-  ) {
-    if (!vm) {
-      if (childVal && typeof childVal !== 'function') {
-        warn(
-          'The "data" option should be a function ' +
-          'that returns a per-instance value in component ' +
-          'definitions.',
-          vm
-        );
-
-        return parentVal
-      }
-      return mergeDataOrFn(parentVal, childVal)
-    }
-
-    return mergeDataOrFn(parentVal, childVal, vm)
-  };
-
-  /**
-   * Hooks and props are merged as arrays.
-   */
-  function mergeHook (
-    parentVal,
-    childVal
-  ) {
-    var res = childVal
-      ? parentVal
-        ? parentVal.concat(childVal)
-        : Array.isArray(childVal)
-          ? childVal
-          : [childVal]
-      : parentVal;
-    return res
-      ? dedupeHooks(res)
-      : res
-  }
-
-  function dedupeHooks (hooks) {
-    var res = [];
-    for (var i = 0; i < hooks.length; i++) {
-      if (res.indexOf(hooks[i]) === -1) {
-        res.push(hooks[i]);
-      }
-    }
-    return res
-  }
-
-  LIFECYCLE_HOOKS.forEach(function (hook) {
-    strats[hook] = mergeHook;
-  });
-
-  /**
-   * Assets
-   *
-   * When a vm is present (instance creation), we need to do
-   * a three-way merge between constructor options, instance
-   * options and parent options.
-   */
-  function mergeAssets (
-    parentVal,
-    childVal,
-    vm,
-    key
-  ) {
-    var res = Object.create(parentVal || null);
-    if (childVal) {
-      assertObjectType(key, childVal, vm);
-      return extend(res, childVal)
-    } else {
-      return res
-    }
-  }
-
-  ASSET_TYPES.forEach(function (type) {
-    strats[type + 's'] = mergeAssets;
-  });
-
-  /**
-   * Watchers.
-   *
-   * Watchers hashes should not overwrite one
-   * another, so we merge them as arrays.
-   */
-  strats.watch = function (
-    parentVal,
-    childVal,
-    vm,
-    key
-  ) {
-    // work around Firefox's Object.prototype.watch...
-    if (parentVal === nativeWatch) { parentVal = undefined; }
-    if (childVal === nativeWatch) { childVal = undefined; }
-    /* istanbul ignore if */
-    if (!childVal) { return Object.create(parentVal || null) }
-    {
-      assertObjectType(key, childVal, vm);
-    }
-    if (!parentVal) { return childVal }
-    var ret = {};
-    extend(ret, parentVal);
-    for (var key$1 in childVal) {
-      var parent = ret[key$1];
-      var child = childVal[key$1];
-      if (parent && !Array.isArray(parent)) {
-        parent = [parent];
-      }
-      ret[key$1] = parent
-        ? parent.concat(child)
-        : Array.isArray(child) ? child : [child];
-    }
-    return ret
-  };
-
-  /**
-   * Other object hashes.
-   */
-  strats.props =
-  strats.methods =
-  strats.inject =
-  strats.computed = function (
-    parentVal,
-    childVal,
-    vm,
-    key
-  ) {
-    if (childVal && "development" !== 'production') {
-      assertObjectType(key, childVal, vm);
-    }
-    if (!parentVal) { return childVal }
-    var ret = Object.create(null);
-    extend(ret, parentVal);
-    if (childVal) { extend(ret, childVal); }
-    return ret
-  };
-  strats.provide = mergeDataOrFn;
-
-  /**
-   * Default strategy.
-   */
-  var defaultStrat = function (parentVal, childVal) {
-    return childVal === undefined
-      ? parentVal
-      : childVal
-  };
-
-  /**
-   * Validate component names
-   */
-  function checkComponents (options) {
-    for (var key in options.components) {
-      validateComponentName(key);
-    }
-  }
-
-  function validateComponentName (name) {
-    if (!new RegExp(("^[a-zA-Z][\\-\\.0-9_" + (unicodeRegExp.source) + "]*$")).test(name)) {
-      warn(
-        'Invalid component name: "' + name + '". Component names ' +
-        'should conform to valid custom element name in html5 specification.'
-      );
-    }
-    if (isBuiltInTag(name) || config.isReservedTag(name)) {
-      warn(
-        'Do not use built-in or reserved HTML elements as component ' +
-        'id: ' + name
-      );
-    }
-  }
-
-  /**
-   * Ensure all props option syntax are normalized into the
-   * Object-based format.
-   */
-  function normalizeProps (options, vm) {
-    var props = options.props;
-    if (!props) { return }
-    var res = {};
-    var i, val, name;
-    if (Array.isArray(props)) {
-      i = props.length;
-      while (i--) {
-        val = props[i];
-        if (typeof val === 'string') {
-          name = camelize(val);
-          res[name] = { type: null };
-        } else {
-          warn('props must be strings when using array syntax.');
-        }
-      }
-    } else if (isPlainObject(props)) {
-      for (var key in props) {
-        val = props[key];
-        name = camelize(key);
-        res[name] = isPlainObject(val)
-          ? val
-          : { type: val };
-      }
-    } else {
-      warn(
-        "Invalid value for option \"props\": expected an Array or an Object, " +
-        "but got " + (toRawType(props)) + ".",
-        vm
-      );
-    }
-    options.props = res;
-  }
-
-  /**
-   * Normalize all injections into Object-based format
-   */
-  function normalizeInject (options, vm) {
-    var inject = options.inject;
-    if (!inject) { return }
-    var normalized = options.inject = {};
-    if (Array.isArray(inject)) {
-      for (var i = 0; i < inject.length; i++) {
-        normalized[inject[i]] = { from: inject[i] };
-      }
-    } else if (isPlainObject(inject)) {
-      for (var key in inject) {
-        var val = inject[key];
-        normalized[key] = isPlainObject(val)
-          ? extend({ from: key }, val)
-          : { from: val };
-      }
-    } else {
-      warn(
-        "Invalid value for option \"inject\": expected an Array or an Object, " +
-        "but got " + (toRawType(inject)) + ".",
-        vm
-      );
-    }
-  }
-
-  /**
-   * Normalize raw function directives into object format.
-   */
-  function normalizeDirectives (options) {
-    var dirs = options.directives;
-    if (dirs) {
-      for (var key in dirs) {
-        var def$$1 = dirs[key];
-        if (typeof def$$1 === 'function') {
-          dirs[key] = { bind: def$$1, update: def$$1 };
-        }
-      }
-    }
-  }
-
-  function assertObjectType (name, value, vm) {
-    if (!isPlainObject(value)) {
-      warn(
-        "Invalid value for option \"" + name + "\": expected an Object, " +
-        "but got " + (toRawType(value)) + ".",
-        vm
-      );
-    }
-  }
-
-  /**
-   * Merge two option objects into a new one.
-   * Core utility used in both instantiation and inheritance.
-   */
-  function mergeOptions (
-    parent,
-    child,
-    vm
-  ) {
-    {
-      checkComponents(child);
-    }
-
-    if (typeof child === 'function') {
-      child = child.options;
-    }
-
-    normalizeProps(child, vm);
-    normalizeInject(child, vm);
-    normalizeDirectives(child);
-
-    // Apply extends and mixins on the child options,
-    // but only if it is a raw options object that isn't
-    // the result of another mergeOptions call.
-    // Only merged options has the _base property.
-    if (!child._base) {
-      if (child.extends) {
-        parent = mergeOptions(parent, child.extends, vm);
-      }
-      if (child.mixins) {
-        for (var i = 0, l = child.mixins.length; i < l; i++) {
-          parent = mergeOptions(parent, child.mixins[i], vm);
-        }
-      }
-    }
-
-    var options = {};
-    var key;
-    for (key in parent) {
-      mergeField(key);
-    }
-    for (key in child) {
-      if (!hasOwn(parent, key)) {
-        mergeField(key);
-      }
-    }
-    function mergeField (key) {
-      var strat = strats[key] || defaultStrat;
-      options[key] = strat(parent[key], child[key], vm, key);
-    }
-    return options
-  }
-
-  /**
-   * Resolve an asset.
-   * This function is used because child instances need access
-   * to assets defined in its ancestor chain.
-   */
-  function resolveAsset (
-    options,
-    type,
-    id,
-    warnMissing
-  ) {
-    /* istanbul ignore if */
-    if (typeof id !== 'string') {
-      return
-    }
-    var assets = options[type];
-    // check local registration variations first
-    if (hasOwn(assets, id)) { return assets[id] }
-    var camelizedId = camelize(id);
-    if (hasOwn(assets, camelizedId)) { return assets[camelizedId] }
-    var PascalCaseId = capitalize(camelizedId);
-    if (hasOwn(assets, PascalCaseId)) { return assets[PascalCaseId] }
-    // fallback to prototype chain
-    var res = assets[id] || assets[camelizedId] || assets[PascalCaseId];
-    if (warnMissing && !res) {
-      warn(
-        'Failed to resolve ' + type.slice(0, -1) + ': ' + id,
-        options
-      );
-    }
-    return res
-  }
-
-  /*  */
-
-
-
-  function validateProp (
-    key,
-    propOptions,
-    propsData,
-    vm
-  ) {
-    var prop = propOptions[key];
-    var absent = !hasOwn(propsData, key);
-    var value = propsData[key];
-    // boolean casting
-    var booleanIndex = getTypeIndex(Boolean, prop.type);
-    if (booleanIndex > -1) {
-      if (absent && !hasOwn(prop, 'default')) {
-        value = false;
-      } else if (value === '' || value === hyphenate(key)) {
-        // only cast empty string / same name to boolean if
-        // boolean has higher priority
-        var stringIndex = getTypeIndex(String, prop.type);
-        if (stringIndex < 0 || booleanIndex < stringIndex) {
-          value = true;
-        }
-      }
-    }
-    // check default value
-    if (value === undefined) {
-      value = getPropDefaultValue(vm, prop, key);
-      // since the default value is a fresh copy,
-      // make sure to observe it.
-      var prevShouldObserve = shouldObserve;
-      toggleObserving(true);
-      observe(value);
-      toggleObserving(prevShouldObserve);
-    }
-    {
-      assertProp(prop, key, value, vm, absent);
-    }
-    return value
-  }
-
-  /**
-   * Get the default value of a prop.
-   */
-  function getPropDefaultValue (vm, prop, key) {
-    // no default, return undefined
-    if (!hasOwn(prop, 'default')) {
-      return undefined
-    }
-    var def = prop.default;
-    // warn against non-factory defaults for Object & Array
-    if (isObject(def)) {
-      warn(
-        'Invalid default value for prop "' + key + '": ' +
-        'Props with type Object/Array must use a factory function ' +
-        'to return the default value.',
-        vm
-      );
-    }
-    // the raw prop value was also undefined from previous render,
-    // return previous default value to avoid unnecessary watcher trigger
-    if (vm && vm.$options.propsData &&
-      vm.$options.propsData[key] === undefined &&
-      vm._props[key] !== undefined
-    ) {
-      return vm._props[key]
-    }
-    // call factory function for non-Function types
-    // a value is Function if its prototype is function even across different execution context
-    return typeof def === 'function' && getType(prop.type) !== 'Function'
-      ? def.call(vm)
-      : def
-  }
-
-  /**
-   * Assert whether a prop is valid.
-   */
-  function assertProp (
-    prop,
-    name,
-    value,
-    vm,
-    absent
-  ) {
-    if (prop.required && absent) {
-      warn(
-        'Missing required prop: "' + name + '"',
-        vm
-      );
-      return
-    }
-    if (value == null && !prop.required) {
-      return
-    }
-    var type = prop.type;
-    var valid = !type || type === true;
-    var expectedTypes = [];
-    if (type) {
-      if (!Array.isArray(type)) {
-        type = [type];
-      }
-      for (var i = 0; i < type.length && !valid; i++) {
-        var assertedType = assertType(value, type[i]);
-        expectedTypes.push(assertedType.expectedType || '');
-        valid = assertedType.valid;
-      }
-    }
-
-    if (!valid) {
-      warn(
-        getInvalidTypeMessage(name, value, expectedTypes),
-        vm
-      );
-      return
-    }
-    var validator = prop.validator;
-    if (validator) {
-      if (!validator(value)) {
-        warn(
-          'Invalid prop: custom validator check failed for prop "' + name + '".',
-          vm
-        );
-      }
-    }
-  }
-
-  var simpleCheckRE = /^(String|Number|Boolean|Function|Symbol)$/;
-
-  function assertType (value, type) {
-    var valid;
-    var expectedType = getType(type);
-    if (simpleCheckRE.test(expectedType)) {
-      var t = typeof value;
-      valid = t === expectedType.toLowerCase();
-      // for primitive wrapper objects
-      if (!valid && t === 'object') {
-        valid = value instanceof type;
-      }
-    } else if (expectedType === 'Object') {
-      valid = isPlainObject(value);
-    } else if (expectedType === 'Array') {
-      valid = Array.isArray(value);
-    } else {
-      valid = value instanceof type;
-    }
-    return {
-      valid: valid,
-      expectedType: expectedType
-    }
-  }
-
-  /**
-   * Use function string name to check built-in types,
-   * because a simple equality check will fail when running
-   * across different vms / iframes.
-   */
-  function getType (fn) {
-    var match = fn && fn.toString().match(/^\s*function (\w+)/);
-    return match ? match[1] : ''
-  }
-
-  function isSameType (a, b) {
-    return getType(a) === getType(b)
-  }
-
-  function getTypeIndex (type, expectedTypes) {
-    if (!Array.isArray(expectedTypes)) {
-      return isSameType(expectedTypes, type) ? 0 : -1
-    }
-    for (var i = 0, len = expectedTypes.length; i < len; i++) {
-      if (isSameType(expectedTypes[i], type)) {
-        return i
-      }
-    }
-    return -1
-  }
-
-  function getInvalidTypeMessage (name, value, expectedTypes) {
-    var message = "Invalid prop: type check failed for prop \"" + name + "\"." +
-      " Expected " + (expectedTypes.map(capitalize).join(', '));
-    var expectedType = expectedTypes[0];
-    var receivedType = toRawType(value);
-    var expectedValue = styleValue(value, expectedType);
-    var receivedValue = styleValue(value, receivedType);
-    // check if we need to specify expected value
-    if (expectedTypes.length === 1 &&
-        isExplicable(expectedType) &&
-        !isBoolean(expectedType, receivedType)) {
-      message += " with value " + expectedValue;
-    }
-    message += ", got " + receivedType + " ";
-    // check if we need to specify received value
-    if (isExplicable(receivedType)) {
-      message += "with value " + receivedValue + ".";
-    }
-    return message
-  }
-
-  function styleValue (value, type) {
-    if (type === 'String') {
-      return ("\"" + value + "\"")
-    } else if (type === 'Number') {
-      return ("" + (Number(value)))
-    } else {
-      return ("" + value)
-    }
-  }
-
-  function isExplicable (value) {
-    var explicitTypes = ['string', 'number', 'boolean'];
-    return explicitTypes.some(function (elem) { return value.toLowerCase() === elem; })
-  }
-
-  function isBoolean () {
-    var args = [], len = arguments.length;
-    while ( len-- ) args[ len ] = arguments[ len ];
-
-    return args.some(function (elem) { return elem.toLowerCase() === 'boolean'; })
-  }
-
-  /*  */
-
-  function handleError (err, vm, info) {
-    // Deactivate deps tracking while processing error handler to avoid possible infinite rendering.
-    // See: https://github.com/vuejs/vuex/issues/1505
-    pushTarget();
-    try {
-      if (vm) {
-        var cur = vm;
-        while ((cur = cur.$parent)) {
-          var hooks = cur.$options.errorCaptured;
-          if (hooks) {
-            for (var i = 0; i < hooks.length; i++) {
-              try {
-                var capture = hooks[i].call(cur, err, vm, info) === false;
-                if (capture) { return }
-              } catch (e) {
-                globalHandleError(e, cur, 'errorCaptured hook');
-              }
-            }
-          }
-        }
-      }
-      globalHandleError(err, vm, info);
-    } finally {
-      popTarget();
-    }
-  }
-
-  function invokeWithErrorHandling (
-    handler,
-    context,
-    args,
-    vm,
-    info
-  ) {
-    var res;
-    try {
-      res = args ? handler.apply(context, args) : handler.call(context);
-      if (res && !res._isVue && isPromise(res) && !res._handled) {
-        res.catch(function (e) { return handleError(e, vm, info + " (Promise/async)"); });
-        // issue #9511
-        // avoid catch triggering multiple times when nested calls
-        res._handled = true;
-      }
-    } catch (e) {
-      handleError(e, vm, info);
-    }
-    return res
-  }
-
-  function globalHandleError (err, vm, info) {
-    if (config.errorHandler) {
-      try {
-        return config.errorHandler.call(null, err, vm, info)
-      } catch (e) {
-        // if the user intentionally throws the original error in the handler,
-        // do not log it twice
-        if (e !== err) {
-          logError(e, null, 'config.errorHandler');
-        }
-      }
-    }
-    logError(err, vm, info);
-  }
-
-  function logError (err, vm, info) {
-    {
-      warn(("Error in " + info + ": \"" + (err.toString()) + "\""), vm);
-    }
-    /* istanbul ignore else */
-    if ((inBrowser || inWeex) && typeof console !== 'undefined') {
-      console.error(err);
-    } else {
-      throw err
-    }
-  }
-
-  /*  */
-
-  var isUsingMicroTask = false;
-
-  var callbacks = [];
-  var pending = false;
-
-  function flushCallbacks () {
-    pending = false;
-    var copies = callbacks.slice(0);
-    callbacks.length = 0;
-    for (var i = 0; i < copies.length; i++) {
-      copies[i]();
-    }
-  }
-
-  // Here we have async deferring wrappers using microtasks.
-  // In 2.5 we used (macro) tasks (in combination with microtasks).
-  // However, it has subtle problems when state is changed right before repaint
-  // (e.g. #6813, out-in transitions).
-  // Also, using (macro) tasks in event handler would cause some weird behaviors
-  // that cannot be circumvented (e.g. #7109, #7153, #7546, #7834, #8109).
-  // So we now use microtasks everywhere, again.
-  // A major drawback of this tradeoff is that there are some scenarios
-  // where microtasks have too high a priority and fire in between supposedly
-  // sequential events (e.g. #4521, #6690, which have workarounds)
-  // or even between bubbling of the same event (#6566).
-  var timerFunc;
-
-  // The nextTick behavior leverages the microtask queue, which can be accessed
-  // via either native Promise.then or MutationObserver.
-  // MutationObserver has wider support, however it is seriously bugged in
-  // UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It
-  // completely stops working after triggering a few times... so, if native
-  // Promise is available, we will use it:
-  /* istanbul ignore next, $flow-disable-line */
-  if (typeof Promise !== 'undefined' && isNative(Promise)) {
-    var p = Promise.resolve();
-    timerFunc = function () {
-      p.then(flushCallbacks);
-      // In problematic UIWebViews, Promise.then doesn't completely break, but
-      // it can get stuck in a weird state where callbacks are pushed into the
-      // microtask queue but the queue isn't being flushed, until the browser
-      // needs to do some other work, e.g. handle a timer. Therefore we can
-      // "force" the microtask queue to be flushed by adding an empty timer.
-      if (isIOS) { setTimeout(noop); }
-    };
-    isUsingMicroTask = true;
-  } else if (!isIE && typeof MutationObserver !== 'undefined' && (
-    isNative(MutationObserver) ||
-    // PhantomJS and iOS 7.x
-    MutationObserver.toString() === '[object MutationObserverConstructor]'
-  )) {
-    // Use MutationObserver where native Promise is not available,
-    // e.g. PhantomJS, iOS7, Android 4.4
-    // (#6466 MutationObserver is unreliable in IE11)
-    var counter = 1;
-    var observer = new MutationObserver(flushCallbacks);
-    var textNode = document.createTextNode(String(counter));
-    observer.observe(textNode, {
-      characterData: true
-    });
-    timerFunc = function () {
-      counter = (counter + 1) % 2;
-      textNode.data = String(counter);
-    };
-    isUsingMicroTask = true;
-  } else if (typeof setImmediate !== 'undefined' && isNative(setImmediate)) {
-    // Fallback to setImmediate.
-    // Techinically it leverages the (macro) task queue,
-    // but it is still a better choice than setTimeout.
-    timerFunc = function () {
-      setImmediate(flushCallbacks);
-    };
-  } else {
-    // Fallback to setTimeout.
-    timerFunc = function () {
-      setTimeout(flushCallbacks, 0);
-    };
-  }
-
-  function nextTick (cb, ctx) {
-    var _resolve;
-    callbacks.push(function () {
-      if (cb) {
-        try {
-          cb.call(ctx);
-        } catch (e) {
-          handleError(e, ctx, 'nextTick');
-        }
-      } else if (_resolve) {
-        _resolve(ctx);
-      }
-    });
-    if (!pending) {
-      pending = true;
-      timerFunc();
-    }
-    // $flow-disable-line
-    if (!cb && typeof Promise !== 'undefined') {
-      return new Promise(function (resolve) {
-        _resolve = resolve;
-      })
-    }
-  }
-
-  /*  */
-
-  var mark;
-  var measure;
-
-  {
-    var perf = inBrowser && window.performance;
-    /* istanbul ignore if */
-    if (
-      perf &&
-      perf.mark &&
-      perf.measure &&
-      perf.clearMarks &&
-      perf.clearMeasures
-    ) {
-      mark = function (tag) { return perf.mark(tag); };
-      measure = function (name, startTag, endTag) {
-        perf.measure(name, startTag, endTag);
-        perf.clearMarks(startTag);
-        perf.clearMarks(endTag);
-        // perf.clearMeasures(name)
-      };
-    }
-  }
-
-  /* not type checking this file because flow doesn't play well with Proxy */
-
-  var initProxy;
-
-  {
-    var allowedGlobals = makeMap(
-      'Infinity,undefined,NaN,isFinite,isNaN,' +
-      'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' +
-      'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,' +
-      'require' // for Webpack/Browserify
-    );
-
-    var warnNonPresent = function (target, key) {
-      warn(
-        "Property or method \"" + key + "\" is not defined on the instance but " +
-        'referenced during render. Make sure that this property is reactive, ' +
-        'either in the data option, or for class-based components, by ' +
-        'initializing the property. ' +
-        'See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.',
-        target
-      );
-    };
-
-    var warnReservedPrefix = function (target, key) {
-      warn(
-        "Property \"" + key + "\" must be accessed with \"$data." + key + "\" because " +
-        'properties starting with "$" or "_" are not proxied in the Vue instance to ' +
-        'prevent conflicts with Vue internals' +
-        'See: https://vuejs.org/v2/api/#data',
-        target
-      );
-    };
-
-    var hasProxy =
-      typeof Proxy !== 'undefined' && isNative(Proxy);
-
-    if (hasProxy) {
-      var isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta,exact');
-      config.keyCodes = new Proxy(config.keyCodes, {
-        set: function set (target, key, value) {
-          if (isBuiltInModifier(key)) {
-            warn(("Avoid overwriting built-in modifier in config.keyCodes: ." + key));
-            return false
-          } else {
-            target[key] = value;
-            return true
-          }
-        }
-      });
-    }
-
-    var hasHandler = {
-      has: function has (target, key) {
-        var has = key in target;
-        var isAllowed = allowedGlobals(key) ||
-          (typeof key === 'string' && key.charAt(0) === '_' && !(key in target.$data));
-        if (!has && !isAllowed) {
-          if (key in target.$data) { warnReservedPrefix(target, key); }
-          else { warnNonPresent(target, key); }
-        }
-        return has || !isAllowed
-      }
-    };
-
-    var getHandler = {
-      get: function get (target, key) {
-        if (typeof key === 'string' && !(key in target)) {
-          if (key in target.$data) { warnReservedPrefix(target, key); }
-          else { warnNonPresent(target, key); }
-        }
-        return target[key]
-      }
-    };
-
-    initProxy = function initProxy (vm) {
-      if (hasProxy) {
-        // determine which proxy handler to use
-        var options = vm.$options;
-        var handlers = options.render && options.render._withStripped
-          ? getHandler
-          : hasHandler;
-        vm._renderProxy = new Proxy(vm, handlers);
-      } else {
-        vm._renderProxy = vm;
-      }
-    };
-  }
-
-  /*  */
-
-  var seenObjects = new _Set();
-
-  /**
-   * Recursively traverse an object to evoke all converted
-   * getters, so that every nested property inside the object
-   * is collected as a "deep" dependency.
-   */
-  function traverse (val) {
-    _traverse(val, seenObjects);
-    seenObjects.clear();
-  }
-
-  function _traverse (val, seen) {
-    var i, keys;
-    var isA = Array.isArray(val);
-    if ((!isA && !isObject(val)) || Object.isFrozen(val) || val instanceof VNode) {
-      return
-    }
-    if (val.__ob__) {
-      var depId = val.__ob__.dep.id;
-      if (seen.has(depId)) {
-        return
-      }
-      seen.add(depId);
-    }
-    if (isA) {
-      i = val.length;
-      while (i--) { _traverse(val[i], seen); }
-    } else {
-      keys = Object.keys(val);
-      i = keys.length;
-      while (i--) { _traverse(val[keys[i]], seen); }
-    }
-  }
-
-  /*  */
-
-  var normalizeEvent = cached(function (name) {
-    var passive = name.charAt(0) === '&';
-    name = passive ? name.slice(1) : name;
-    var once$$1 = name.charAt(0) === '~'; // Prefixed last, checked first
-    name = once$$1 ? name.slice(1) : name;
-    var capture = name.charAt(0) === '!';
-    name = capture ? name.slice(1) : name;
-    return {
-      name: name,
-      once: once$$1,
-      capture: capture,
-      passive: passive
-    }
-  });
-
-  function createFnInvoker (fns, vm) {
-    function invoker () {
-      var arguments$1 = arguments;
-
-      var fns = invoker.fns;
-      if (Array.isArray(fns)) {
-        var cloned = fns.slice();
-        for (var i = 0; i < cloned.length; i++) {
-          invokeWithErrorHandling(cloned[i], null, arguments$1, vm, "v-on handler");
-        }
-      } else {
-        // return handler return value for single handlers
-        return invokeWithErrorHandling(fns, null, arguments, vm, "v-on handler")
-      }
-    }
-    invoker.fns = fns;
-    return invoker
-  }
-
-  function updateListeners (
-    on,
-    oldOn,
-    add,
-    remove$$1,
-    createOnceHandler,
-    vm
-  ) {
-    var name, def$$1, cur, old, event;
-    for (name in on) {
-      def$$1 = cur = on[name];
-      old = oldOn[name];
-      event = normalizeEvent(name);
-      if (isUndef(cur)) {
-        warn(
-          "Invalid handler for event \"" + (event.name) + "\": got " + String(cur),
-          vm
-        );
-      } else if (isUndef(old)) {
-        if (isUndef(cur.fns)) {
-          cur = on[name] = createFnInvoker(cur, vm);
-        }
-        if (isTrue(event.once)) {
-          cur = on[name] = createOnceHandler(event.name, cur, event.capture);
-        }
-        add(event.name, cur, event.capture, event.passive, event.params);
-      } else if (cur !== old) {
-        old.fns = cur;
-        on[name] = old;
-      }
-    }
-    for (name in oldOn) {
-      if (isUndef(on[name])) {
-        event = normalizeEvent(name);
-        remove$$1(event.name, oldOn[name], event.capture);
-      }
-    }
-  }
-
-  /*  */
-
-  function mergeVNodeHook (def, hookKey, hook) {
-    if (def instanceof VNode) {
-      def = def.data.hook || (def.data.hook = {});
-    }
-    var invoker;
-    var oldHook = def[hookKey];
-
-    function wrappedHook () {
-      hook.apply(this, arguments);
-      // important: remove merged hook to ensure it's called only once
-      // and prevent memory leak
-      remove(invoker.fns, wrappedHook);
-    }
-
-    if (isUndef(oldHook)) {
-      // no existing hook
-      invoker = createFnInvoker([wrappedHook]);
-    } else {
-      /* istanbul ignore if */
-      if (isDef(oldHook.fns) && isTrue(oldHook.merged)) {
-        // already a merged invoker
-        invoker = oldHook;
-        invoker.fns.push(wrappedHook);
-      } else {
-        // existing plain hook
-        invoker = createFnInvoker([oldHook, wrappedHook]);
-      }
-    }
-
-    invoker.merged = true;
-    def[hookKey] = invoker;
-  }
-
-  /*  */
-
-  function extractPropsFromVNodeData (
-    data,
-    Ctor,
-    tag
-  ) {
-    // we are only extracting raw values here.
-    // validation and default values are handled in the child
-    // component itself.
-    var propOptions = Ctor.options.props;
-    if (isUndef(propOptions)) {
-      return
-    }
-    var res = {};
-    var attrs = data.attrs;
-    var props = data.props;
-    if (isDef(attrs) || isDef(props)) {
-      for (var key in propOptions) {
-        var altKey = hyphenate(key);
-        {
-          var keyInLowerCase = key.toLowerCase();
-          if (
-            key !== keyInLowerCase &&
-            attrs && hasOwn(attrs, keyInLowerCase)
-          ) {
-            tip(
-              "Prop \"" + keyInLowerCase + "\" is passed to component " +
-              (formatComponentName(tag || Ctor)) + ", but the declared prop name is" +
-              " \"" + key + "\". " +
-              "Note that HTML attributes are case-insensitive and camelCased " +
-              "props need to use their kebab-case equivalents when using in-DOM " +
-              "templates. You should probably use \"" + altKey + "\" instead of \"" + key + "\"."
-            );
-          }
-        }
-        checkProp(res, props, key, altKey, true) ||
-        checkProp(res, attrs, key, altKey, false);
-      }
-    }
-    return res
-  }
-
-  function checkProp (
-    res,
-    hash,
-    key,
-    altKey,
-    preserve
-  ) {
-    if (isDef(hash)) {
-      if (hasOwn(hash, key)) {
-        res[key] = hash[key];
-        if (!preserve) {
-          delete hash[key];
-        }
-        return true
-      } else if (hasOwn(hash, altKey)) {
-        res[key] = hash[altKey];
-        if (!preserve) {
-          delete hash[altKey];
-        }
-        return true
-      }
-    }
-    return false
-  }
-
-  /*  */
-
-  // The template compiler attempts to minimize the need for normalization by
-  // statically analyzing the template at compile time.
-  //
-  // For plain HTML markup, normalization can be completely skipped because the
-  // generated render function is guaranteed to return Array<VNode>. There are
-  // two cases where extra normalization is needed:
-
-  // 1. When the children contains components - because a functional component
-  // may return an Array instead of a single root. In this case, just a simple
-  // normalization is needed - if any child is an Array, we flatten the whole
-  // thing with Array.prototype.concat. It is guaranteed to be only 1-level deep
-  // because functional components already normalize their own children.
-  function simpleNormalizeChildren (children) {
-    for (var i = 0; i < children.length; i++) {
-      if (Array.isArray(children[i])) {
-        return Array.prototype.concat.apply([], children)
-      }
-    }
-    return children
-  }
-
-  // 2. When the children contains constructs that always generated nested Arrays,
-  // e.g. <template>, <slot>, v-for, or when the children is provided by user
-  // with hand-written render functions / JSX. In such cases a full normalization
-  // is needed to cater to all possible types of children values.
-  function normalizeChildren (children) {
-    return isPrimitive(children)
-      ? [createTextVNode(children)]
-      : Array.isArray(children)
-        ? normalizeArrayChildren(children)
-        : undefined
-  }
-
-  function isTextNode (node) {
-    return isDef(node) && isDef(node.text) && isFalse(node.isComment)
-  }
-
-  function normalizeArrayChildren (children, nestedIndex) {
-    var res = [];
-    var i, c, lastIndex, last;
-    for (i = 0; i < children.length; i++) {
-      c = children[i];
-      if (isUndef(c) || typeof c === 'boolean') { continue }
-      lastIndex = res.length - 1;
-      last = res[lastIndex];
-      //  nested
-      if (Array.isArray(c)) {
-        if (c.length > 0) {
-          c = normalizeArrayChildren(c, ((nestedIndex || '') + "_" + i));
-          // merge adjacent text nodes
-          if (isTextNode(c[0]) && isTextNode(last)) {
-            res[lastIndex] = createTextVNode(last.text + (c[0]).text);
-            c.shift();
-          }
-          res.push.apply(res, c);
-        }
-      } else if (isPrimitive(c)) {
-        if (isTextNode(last)) {
-          // merge adjacent text nodes
-          // this is necessary for SSR hydration because text nodes are
-          // essentially merged when rendered to HTML strings
-          res[lastIndex] = createTextVNode(last.text + c);
-        } else if (c !== '') {
-          // convert primitive to vnode
-          res.push(createTextVNode(c));
-        }
-      } else {
-        if (isTextNode(c) && isTextNode(last)) {
-          // merge adjacent text nodes
-          res[lastIndex] = createTextVNode(last.text + c.text);
-        } else {
-          // default key for nested array children (likely generated by v-for)
-          if (isTrue(children._isVList) &&
-            isDef(c.tag) &&
-            isUndef(c.key) &&
-            isDef(nestedIndex)) {
-            c.key = "__vlist" + nestedIndex + "_" + i + "__";
-          }
-          res.push(c);
-        }
-      }
-    }
-    return res
-  }
-
-  /*  */
-
-  function initProvide (vm) {
-    var provide = vm.$options.provide;
-    if (provide) {
-      vm._provided = typeof provide === 'function'
-        ? provide.call(vm)
-        : provide;
-    }
-  }
-
-  function initInjections (vm) {
-    var result = resolveInject(vm.$options.inject, vm);
-    if (result) {
-      toggleObserving(false);
-      Object.keys(result).forEach(function (key) {
-        /* istanbul ignore else */
-        {
-          defineReactive$$1(vm, key, result[key], function () {
-            warn(
-              "Avoid mutating an injected value directly since the changes will be " +
-              "overwritten whenever the provided component re-renders. " +
-              "injection being mutated: \"" + key + "\"",
-              vm
-            );
-          });
-        }
-      });
-      toggleObserving(true);
-    }
-  }
-
-  function resolveInject (inject, vm) {
-    if (inject) {
-      // inject is :any because flow is not smart enough to figure out cached
-      var result = Object.create(null);
-      var keys = hasSymbol
-        ? Reflect.ownKeys(inject)
-        : Object.keys(inject);
-
-      for (var i = 0; i < keys.length; i++) {
-        var key = keys[i];
-        // #6574 in case the inject object is observed...
-        if (key === '__ob__') { continue }
-        var provideKey = inject[key].from;
-        var source = vm;
-        while (source) {
-          if (source._provided && hasOwn(source._provided, provideKey)) {
-            result[key] = source._provided[provideKey];
-            break
-          }
-          source = source.$parent;
-        }
-        if (!source) {
-          if ('default' in inject[key]) {
-            var provideDefault = inject[key].default;
-            result[key] = typeof provideDefault === 'function'
-              ? provideDefault.call(vm)
-              : provideDefault;
-          } else {
-            warn(("Injection \"" + key + "\" not found"), vm);
-          }
-        }
-      }
-      return result
-    }
-  }
-
-  /*  */
-
-
-
-  /**
-   * Runtime helper for resolving raw children VNodes into a slot object.
-   */
-  function resolveSlots (
-    children,
-    context
-  ) {
-    if (!children || !children.length) {
-      return {}
-    }
-    var slots = {};
-    for (var i = 0, l = children.length; i < l; i++) {
-      var child = children[i];
-      var data = child.data;
-      // remove slot attribute if the node is resolved as a Vue slot node
-      if (data && data.attrs && data.attrs.slot) {
-        delete data.attrs.slot;
-      }
-      // named slots should only be respected if the vnode was rendered in the
-      // same context.
-      if ((child.context === context || child.fnContext === context) &&
-        data && data.slot != null
-      ) {
-        var name = data.slot;
-        var slot = (slots[name] || (slots[name] = []));
-        if (child.tag === 'template') {
-          slot.push.apply(slot, child.children || []);
-        } else {
-          slot.push(child);
-        }
-      } else {
-        (slots.default || (slots.default = [])).push(child);
-      }
-    }
-    // ignore slots that contains only whitespace
-    for (var name$1 in slots) {
-      if (slots[name$1].every(isWhitespace)) {
-        delete slots[name$1];
-      }
-    }
-    return slots
-  }
-
-  function isWhitespace (node) {
-    return (node.isComment && !node.asyncFactory) || node.text === ' '
-  }
-
-  /*  */
-
-  function normalizeScopedSlots (
-    slots,
-    normalSlots,
-    prevSlots
-  ) {
-    var res;
-    var hasNormalSlots = Object.keys(normalSlots).length > 0;
-    var isStable = slots ? !!slots.$stable : !hasNormalSlots;
-    var key = slots && slots.$key;
-    if (!slots) {
-      res = {};
-    } else if (slots._normalized) {
-      // fast path 1: child component re-render only, parent did not change
-      return slots._normalized
-    } else if (
-      isStable &&
-      prevSlots &&
-      prevSlots !== emptyObject &&
-      key === prevSlots.$key &&
-      !hasNormalSlots &&
-      !prevSlots.$hasNormal
-    ) {
-      // fast path 2: stable scoped slots w/ no normal slots to proxy,
-      // only need to normalize once
-      return prevSlots
-    } else {
-      res = {};
-      for (var key$1 in slots) {
-        if (slots[key$1] && key$1[0] !== '$') {
-          res[key$1] = normalizeScopedSlot(normalSlots, key$1, slots[key$1]);
-        }
-      }
-    }
-    // expose normal slots on scopedSlots
-    for (var key$2 in normalSlots) {
-      if (!(key$2 in res)) {
-        res[key$2] = proxyNormalSlot(normalSlots, key$2);
-      }
-    }
-    // avoriaz seems to mock a non-extensible $scopedSlots object
-    // and when that is passed down this would cause an error
-    if (slots && Object.isExtensible(slots)) {
-      (slots)._normalized = res;
-    }
-    def(res, '$stable', isStable);
-    def(res, '$key', key);
-    def(res, '$hasNormal', hasNormalSlots);
-    return res
-  }
-
-  function normalizeScopedSlot(normalSlots, key, fn) {
-    var normalized = function () {
-      var res = arguments.length ? fn.apply(null, arguments) : fn({});
-      res = res && typeof res === 'object' && !Array.isArray(res)
-        ? [res] // single vnode
-        : normalizeChildren(res);
-      return res && (
-        res.length === 0 ||
-        (res.length === 1 && res[0].isComment) // #9658
-      ) ? undefined
-        : res
-    };
-    // this is a slot using the new v-slot syntax without scope. although it is
-    // compiled as a scoped slot, render fn users would expect it to be present
-    // on this.$slots because the usage is semantically a normal slot.
-    if (fn.proxy) {
-      Object.defineProperty(normalSlots, key, {
-        get: normalized,
-        enumerable: true,
-        configurable: true
-      });
-    }
-    return normalized
-  }
-
-  function proxyNormalSlot(slots, key) {
-    return function () { return slots[key]; }
-  }
-
-  /*  */
-
-  /**
-   * Runtime helper for rendering v-for lists.
-   */
-  function renderList (
-    val,
-    render
-  ) {
-    var ret, i, l, keys, key;
-    if (Array.isArray(val) || typeof val === 'string') {
-      ret = new Array(val.length);
-      for (i = 0, l = val.length; i < l; i++) {
-        ret[i] = render(val[i], i);
-      }
-    } else if (typeof val === 'number') {
-      ret = new Array(val);
-      for (i = 0; i < val; i++) {
-        ret[i] = render(i + 1, i);
-      }
-    } else if (isObject(val)) {
-      if (hasSymbol && val[Symbol.iterator]) {
-        ret = [];
-        var iterator = val[Symbol.iterator]();
-        var result = iterator.next();
-        while (!result.done) {
-          ret.push(render(result.value, ret.length));
-          result = iterator.next();
-        }
-      } else {
-        keys = Object.keys(val);
-        ret = new Array(keys.length);
-        for (i = 0, l = keys.length; i < l; i++) {
-          key = keys[i];
-          ret[i] = render(val[key], key, i);
-        }
-      }
-    }
-    if (!isDef(ret)) {
-      ret = [];
-    }
-    (ret)._isVList = true;
-    return ret
-  }
-
-  /*  */
-
-  /**
-   * Runtime helper for rendering <slot>
-   */
-  function renderSlot (
-    name,
-    fallback,
-    props,
-    bindObject
-  ) {
-    var scopedSlotFn = this.$scopedSlots[name];
-    var nodes;
-    if (scopedSlotFn) { // scoped slot
-      props = props || {};
-      if (bindObject) {
-        if (!isObject(bindObject)) {
-          warn(
-            'slot v-bind without argument expects an Object',
-            this
-          );
-        }
-        props = extend(extend({}, bindObject), props);
-      }
-      nodes = scopedSlotFn(props) || fallback;
-    } else {
-      nodes = this.$slots[name] || fallback;
-    }
-
-    var target = props && props.slot;
-    if (target) {
-      return this.$createElement('template', { slot: target }, nodes)
-    } else {
-      return nodes
-    }
-  }
-
-  /*  */
-
-  /**
-   * Runtime helper for resolving filters
-   */
-  function resolveFilter (id) {
-    return resolveAsset(this.$options, 'filters', id, true) || identity
-  }
-
-  /*  */
-
-  function isKeyNotMatch (expect, actual) {
-    if (Array.isArray(expect)) {
-      return expect.indexOf(actual) === -1
-    } else {
-      return expect !== actual
-    }
-  }
-
-  /**
-   * Runtime helper for checking keyCodes from config.
-   * exposed as Vue.prototype._k
-   * passing in eventKeyName as last argument separately for backwards compat
-   */
-  function checkKeyCodes (
-    eventKeyCode,
-    key,
-    builtInKeyCode,
-    eventKeyName,
-    builtInKeyName
-  ) {
-    var mappedKeyCode = config.keyCodes[key] || builtInKeyCode;
-    if (builtInKeyName && eventKeyName && !config.keyCodes[key]) {
-      return isKeyNotMatch(builtInKeyName, eventKeyName)
-    } else if (mappedKeyCode) {
-      return isKeyNotMatch(mappedKeyCode, eventKeyCode)
-    } else if (eventKeyName) {
-      return hyphenate(eventKeyName) !== key
-    }
-  }
-
-  /*  */
-
-  /**
-   * Runtime helper for merging v-bind="object" into a VNode's data.
-   */
-  function bindObjectProps (
-    data,
-    tag,
-    value,
-    asProp,
-    isSync
-  ) {
-    if (value) {
-      if (!isObject(value)) {
-        warn(
-          'v-bind without argument expects an Object or Array value',
-          this
-        );
-      } else {
-        if (Array.isArray(value)) {
-          value = toObject(value);
-        }
-        var hash;
-        var loop = function ( key ) {
-          if (
-            key === 'class' ||
-            key === 'style' ||
-            isReservedAttribute(key)
-          ) {
-            hash = data;
-          } else {
-            var type = data.attrs && data.attrs.type;
-            hash = asProp || config.mustUseProp(tag, type, key)
-              ? data.domProps || (data.domProps = {})
-              : data.attrs || (data.attrs = {});
-          }
-          var camelizedKey = camelize(key);
-          var hyphenatedKey = hyphenate(key);
-          if (!(camelizedKey in hash) && !(hyphenatedKey in hash)) {
-            hash[key] = value[key];
-
-            if (isSync) {
-              var on = data.on || (data.on = {});
-              on[("update:" + key)] = function ($event) {
-                value[key] = $event;
-              };
-            }
-          }
-        };
-
-        for (var key in value) loop( key );
-      }
-    }
-    return data
-  }
-
-  /*  */
-
-  /**
-   * Runtime helper for rendering static trees.
-   */
-  function renderStatic (
-    index,
-    isInFor
-  ) {
-    var cached = this._staticTrees || (this._staticTrees = []);
-    var tree = cached[index];
-    // if has already-rendered static tree and not inside v-for,
-    // we can reuse the same tree.
-    if (tree && !isInFor) {
-      return tree
-    }
-    // otherwise, render a fresh tree.
-    tree = cached[index] = this.$options.staticRenderFns[index].call(
-      this._renderProxy,
-      null,
-      this // for render fns generated for functional component templates
-    );
-    markStatic(tree, ("__static__" + index), false);
-    return tree
-  }
-
-  /**
-   * Runtime helper for v-once.
-   * Effectively it means marking the node as static with a unique key.
-   */
-  function markOnce (
-    tree,
-    index,
-    key
-  ) {
-    markStatic(tree, ("__once__" + index + (key ? ("_" + key) : "")), true);
-    return tree
-  }
-
-  function markStatic (
-    tree,
-    key,
-    isOnce
-  ) {
-    if (Array.isArray(tree)) {
-      for (var i = 0; i < tree.length; i++) {
-        if (tree[i] && typeof tree[i] !== 'string') {
-          markStaticNode(tree[i], (key + "_" + i), isOnce);
-        }
-      }
-    } else {
-      markStaticNode(tree, key, isOnce);
-    }
-  }
-
-  function markStaticNode (node, key, isOnce) {
-    node.isStatic = true;
-    node.key = key;
-    node.isOnce = isOnce;
-  }
-
-  /*  */
-
-  function bindObjectListeners (data, value) {
-    if (value) {
-      if (!isPlainObject(value)) {
-        warn(
-          'v-on without argument expects an Object value',
-          this
-        );
-      } else {
-        var on = data.on = data.on ? extend({}, data.on) : {};
-        for (var key in value) {
-          var existing = on[key];
-          var ours = value[key];
-          on[key] = existing ? [].concat(existing, ours) : ours;
-        }
-      }
-    }
-    return data
-  }
-
-  /*  */
-
-  function resolveScopedSlots (
-    fns, // see flow/vnode
-    res,
-    // the following are added in 2.6
-    hasDynamicKeys,
-    contentHashKey
-  ) {
-    res = res || { $stable: !hasDynamicKeys };
-    for (var i = 0; i < fns.length; i++) {
-      var slot = fns[i];
-      if (Array.isArray(slot)) {
-        resolveScopedSlots(slot, res, hasDynamicKeys);
-      } else if (slot) {
-        // marker for reverse proxying v-slot without scope on this.$slots
-        if (slot.proxy) {
-          slot.fn.proxy = true;
-        }
-        res[slot.key] = slot.fn;
-      }
-    }
-    if (contentHashKey) {
-      (res).$key = contentHashKey;
-    }
-    return res
-  }
-
-  /*  */
-
-  function bindDynamicKeys (baseObj, values) {
-    for (var i = 0; i < values.length; i += 2) {
-      var key = values[i];
-      if (typeof key === 'string' && key) {
-        baseObj[values[i]] = values[i + 1];
-      } else if (key !== '' && key !== null) {
-        // null is a speical value for explicitly removing a binding
-        warn(
-          ("Invalid value for dynamic directive argument (expected string or null): " + key),
-          this
-        );
-      }
-    }
-    return baseObj
-  }
-
-  // helper to dynamically append modifier runtime markers to event names.
-  // ensure only append when value is already string, otherwise it will be cast
-  // to string and cause the type check to miss.
-  function prependModifier (value, symbol) {
-    return typeof value === 'string' ? symbol + value : value
-  }
-
-  /*  */
-
-  function installRenderHelpers (target) {
-    target._o = markOnce;
-    target._n = toNumber;
-    target._s = toString;
-    target._l = renderList;
-    target._t = renderSlot;
-    target._q = looseEqual;
-    target._i = looseIndexOf;
-    target._m = renderStatic;
-    target._f = resolveFilter;
-    target._k = checkKeyCodes;
-    target._b = bindObjectProps;
-    target._v = createTextVNode;
-    target._e = createEmptyVNode;
-    target._u = resolveScopedSlots;
-    target._g = bindObjectListeners;
-    target._d = bindDynamicKeys;
-    target._p = prependModifier;
-  }
-
-  /*  */
-
-  function FunctionalRenderContext (
-    data,
-    props,
-    children,
-    parent,
-    Ctor
-  ) {
-    var this$1 = this;
-
-    var options = Ctor.options;
-    // ensure the createElement function in functional components
-    // gets a unique context - this is necessary for correct named slot check
-    var contextVm;
-    if (hasOwn(parent, '_uid')) {
-      contextVm = Object.create(parent);
-      // $flow-disable-line
-      contextVm._original = parent;
-    } else {
-      // the context vm passed in is a functional context as well.
-      // in this case we want to make sure we are able to get a hold to the
-      // real context instance.
-      contextVm = parent;
-      // $flow-disable-line
-      parent = parent._original;
-    }
-    var isCompiled = isTrue(options._compiled);
-    var needNormalization = !isCompiled;
-
-    this.data = data;
-    this.props = props;
-    this.children = children;
-    this.parent = parent;
-    this.listeners = data.on || emptyObject;
-    this.injections = resolveInject(options.inject, parent);
-    this.slots = function () {
-      if (!this$1.$slots) {
-        normalizeScopedSlots(
-          data.scopedSlots,
-          this$1.$slots = resolveSlots(children, parent)
-        );
-      }
-      return this$1.$slots
-    };
-
-    Object.defineProperty(this, 'scopedSlots', ({
-      enumerable: true,
-      get: function get () {
-        return normalizeScopedSlots(data.scopedSlots, this.slots())
-      }
-    }));
-
-    // support for compiled functional template
-    if (isCompiled) {
-      // exposing $options for renderStatic()
-      this.$options = options;
-      // pre-resolve slots for renderSlot()
-      this.$slots = this.slots();
-      this.$scopedSlots = normalizeScopedSlots(data.scopedSlots, this.$slots);
-    }
-
-    if (options._scopeId) {
-      this._c = function (a, b, c, d) {
-        var vnode = createElement(contextVm, a, b, c, d, needNormalization);
-        if (vnode && !Array.isArray(vnode)) {
-          vnode.fnScopeId = options._scopeId;
-          vnode.fnContext = parent;
-        }
-        return vnode
-      };
-    } else {
-      this._c = function (a, b, c, d) { return createElement(contextVm, a, b, c, d, needNormalization); };
-    }
-  }
-
-  installRenderHelpers(FunctionalRenderContext.prototype);
-
-  function createFunctionalComponent (
-    Ctor,
-    propsData,
-    data,
-    contextVm,
-    children
-  ) {
-    var options = Ctor.options;
-    var props = {};
-    var propOptions = options.props;
-    if (isDef(propOptions)) {
-      for (var key in propOptions) {
-        props[key] = validateProp(key, propOptions, propsData || emptyObject);
-      }
-    } else {
-      if (isDef(data.attrs)) { mergeProps(props, data.attrs); }
-      if (isDef(data.props)) { mergeProps(props, data.props); }
-    }
-
-    var renderContext = new FunctionalRenderContext(
-      data,
-      props,
-      children,
-      contextVm,
-      Ctor
-    );
-
-    var vnode = options.render.call(null, renderContext._c, renderContext);
-
-    if (vnode instanceof VNode) {
-      return cloneAndMarkFunctionalResult(vnode, data, renderContext.parent, options, renderContext)
-    } else if (Array.isArray(vnode)) {
-      var vnodes = normalizeChildren(vnode) || [];
-      var res = new Array(vnodes.length);
-      for (var i = 0; i < vnodes.length; i++) {
-        res[i] = cloneAndMarkFunctionalResult(vnodes[i], data, renderContext.parent, options, renderContext);
-      }
-      return res
-    }
-  }
-
-  function cloneAndMarkFunctionalResult (vnode, data, contextVm, options, renderContext) {
-    // #7817 clone node before setting fnContext, otherwise if the node is reused
-    // (e.g. it was from a cached normal slot) the fnContext causes named slots
-    // that should not be matched to match.
-    var clone = cloneVNode(vnode);
-    clone.fnContext = contextVm;
-    clone.fnOptions = options;
-    {
-      (clone.devtoolsMeta = clone.devtoolsMeta || {}).renderContext = renderContext;
-    }
-    if (data.slot) {
-      (clone.data || (clone.data = {})).slot = data.slot;
-    }
-    return clone
-  }
-
-  function mergeProps (to, from) {
-    for (var key in from) {
-      to[camelize(key)] = from[key];
-    }
-  }
-
-  /*  */
-
-  /*  */
-
-  /*  */
-
-  /*  */
-
-  // inline hooks to be invoked on component VNodes during patch
-  var componentVNodeHooks = {
-    init: function init (vnode, hydrating) {
-      if (
-        vnode.componentInstance &&
-        !vnode.componentInstance._isDestroyed &&
-        vnode.data.keepAlive
-      ) {
-        // kept-alive components, treat as a patch
-        var mountedNode = vnode; // work around flow
-        componentVNodeHooks.prepatch(mountedNode, mountedNode);
-      } else {
-        var child = vnode.componentInstance = createComponentInstanceForVnode(
-          vnode,
-          activeInstance
-        );
-        child.$mount(hydrating ? vnode.elm : undefined, hydrating);
-      }
-    },
-
-    prepatch: function prepatch (oldVnode, vnode) {
-      var options = vnode.componentOptions;
-      var child = vnode.componentInstance = oldVnode.componentInstance;
-      updateChildComponent(
-        child,
-        options.propsData, // updated props
-        options.listeners, // updated listeners
-        vnode, // new parent vnode
-        options.children // new children
-      );
-    },
-
-    insert: function insert (vnode) {
-      var context = vnode.context;
-      var componentInstance = vnode.componentInstance;
-      if (!componentInstance._isMounted) {
-        componentInstance._isMounted = true;
-        callHook(componentInstance, 'mounted');
-      }
-      if (vnode.data.keepAlive) {
-        if (context._isMounted) {
-          // vue-router#1212
-          // During updates, a kept-alive component's child components may
-          // change, so directly walking the tree here may call activated hooks
-          // on incorrect children. Instead we push them into a queue which will
-          // be processed after the whole patch process ended.
-          queueActivatedComponent(componentInstance);
-        } else {
-          activateChildComponent(componentInstance, true /* direct */);
-        }
-      }
-    },
-
-    destroy: function destroy (vnode) {
-      var componentInstance = vnode.componentInstance;
-      if (!componentInstance._isDestroyed) {
-        if (!vnode.data.keepAlive) {
-          componentInstance.$destroy();
-        } else {
-          deactivateChildComponent(componentInstance, true /* direct */);
-        }
-      }
-    }
-  };
-
-  var hooksToMerge = Object.keys(componentVNodeHooks);
-
-  function createComponent (
-    Ctor,
-    data,
-    context,
-    children,
-    tag
-  ) {
-    if (isUndef(Ctor)) {
-      return
-    }
-
-    var baseCtor = context.$options._base;
-
-    // plain options object: turn it into a constructor
-    if (isObject(Ctor)) {
-      Ctor = baseCtor.extend(Ctor);
-    }
-
-    // if at this stage it's not a constructor or an async component factory,
-    // reject.
-    if (typeof Ctor !== 'function') {
-      {
-        warn(("Invalid Component definition: " + (String(Ctor))), context);
-      }
-      return
-    }
-
-    // async component
-    var asyncFactory;
-    if (isUndef(Ctor.cid)) {
-      asyncFactory = Ctor;
-      Ctor = resolveAsyncComponent(asyncFactory, baseCtor);
-      if (Ctor === undefined) {
-        // return a placeholder node for async component, which is rendered
-        // as a comment node but preserves all the raw information for the node.
-        // the information will be used for async server-rendering and hydration.
-        return createAsyncPlaceholder(
-          asyncFactory,
-          data,
-          context,
-          children,
-          tag
-        )
-      }
-    }
-
-    data = data || {};
-
-    // resolve constructor options in case global mixins are applied after
-    // component constructor creation
-    resolveConstructorOptions(Ctor);
-
-    // transform component v-model data into props & events
-    if (isDef(data.model)) {
-      transformModel(Ctor.options, data);
-    }
-
-    // extract props
-    var propsData = extractPropsFromVNodeData(data, Ctor, tag);
-
-    // functional component
-    if (isTrue(Ctor.options.functional)) {
-      return createFunctionalComponent(Ctor, propsData, data, context, children)
-    }
-
-    // extract listeners, since these needs to be treated as
-    // child component listeners instead of DOM listeners
-    var listeners = data.on;
-    // replace with listeners with .native modifier
-    // so it gets processed during parent component patch.
-    data.on = data.nativeOn;
-
-    if (isTrue(Ctor.options.abstract)) {
-      // abstract components do not keep anything
-      // other than props & listeners & slot
-
-      // work around flow
-      var slot = data.slot;
-      data = {};
-      if (slot) {
-        data.slot = slot;
-      }
-    }
-
-    // install component management hooks onto the placeholder node
-    installComponentHooks(data);
-
-    // return a placeholder vnode
-    var name = Ctor.options.name || tag;
-    var vnode = new VNode(
-      ("vue-component-" + (Ctor.cid) + (name ? ("-" + name) : '')),
-      data, undefined, undefined, undefined, context,
-      { Ctor: Ctor, propsData: propsData, listeners: listeners, tag: tag, children: children },
-      asyncFactory
-    );
-
-    return vnode
-  }
-
-  function createComponentInstanceForVnode (
-    vnode, // we know it's MountedComponentVNode but flow doesn't
-    parent // activeInstance in lifecycle state
-  ) {
-    var options = {
-      _isComponent: true,
-      _parentVnode: vnode,
-      parent: parent
-    };
-    // check inline-template render functions
-    var inlineTemplate = vnode.data.inlineTemplate;
-    if (isDef(inlineTemplate)) {
-      options.render = inlineTemplate.render;
-      options.staticRenderFns = inlineTemplate.staticRenderFns;
-    }
-    return new vnode.componentOptions.Ctor(options)
-  }
-
-  function installComponentHooks (data) {
-    var hooks = data.hook || (data.hook = {});
-    for (var i = 0; i < hooksToMerge.length; i++) {
-      var key = hooksToMerge[i];
-      var existing = hooks[key];
-      var toMerge = componentVNodeHooks[key];
-      if (existing !== toMerge && !(existing && existing._merged)) {
-        hooks[key] = existing ? mergeHook$1(toMerge, existing) : toMerge;
-      }
-    }
-  }
-
-  function mergeHook$1 (f1, f2) {
-    var merged = function (a, b) {
-      // flow complains about extra args which is why we use any
-      f1(a, b);
-      f2(a, b);
-    };
-    merged._merged = true;
-    return merged
-  }
-
-  // transform component v-model info (value and callback) into
-  // prop and event handler respectively.
-  function transformModel (options, data) {
-    var prop = (options.model && options.model.prop) || 'value';
-    var event = (options.model && options.model.event) || 'input'
-    ;(data.attrs || (data.attrs = {}))[prop] = data.model.value;
-    var on = data.on || (data.on = {});
-    var existing = on[event];
-    var callback = data.model.callback;
-    if (isDef(existing)) {
-      if (
-        Array.isArray(existing)
-          ? existing.indexOf(callback) === -1
-          : existing !== callback
-      ) {
-        on[event] = [callback].concat(existing);
-      }
-    } else {
-      on[event] = callback;
-    }
-  }
-
-  /*  */
-
-  var SIMPLE_NORMALIZE = 1;
-  var ALWAYS_NORMALIZE = 2;
-
-  // wrapper function for providing a more flexible interface
-  // without getting yelled at by flow
-  function createElement (
-    context,
-    tag,
-    data,
-    children,
-    normalizationType,
-    alwaysNormalize
-  ) {
-    if (Array.isArray(data) || isPrimitive(data)) {
-      normalizationType = children;
-      children = data;
-      data = undefined;
-    }
-    if (isTrue(alwaysNormalize)) {
-      normalizationType = ALWAYS_NORMALIZE;
-    }
-    return _createElement(context, tag, data, children, normalizationType)
-  }
-
-  function _createElement (
-    context,
-    tag,
-    data,
-    children,
-    normalizationType
-  ) {
-    if (isDef(data) && isDef((data).__ob__)) {
-      warn(
-        "Avoid using observed data object as vnode data: " + (JSON.stringify(data)) + "\n" +
-        'Always create fresh vnode data objects in each render!',
-        context
-      );
-      return createEmptyVNode()
-    }
-    // object syntax in v-bind
-    if (isDef(data) && isDef(data.is)) {
-      tag = data.is;
-    }
-    if (!tag) {
-      // in case of component :is set to falsy value
-      return createEmptyVNode()
-    }
-    // warn against non-primitive key
-    if (isDef(data) && isDef(data.key) && !isPrimitive(data.key)
-    ) {
-      {
-        warn(
-          'Avoid using non-primitive value as key, ' +
-          'use string/number value instead.',
-          context
-        );
-      }
-    }
-    // support single function children as default scoped slot
-    if (Array.isArray(children) &&
-      typeof children[0] === 'function'
-    ) {
-      data = data || {};
-      data.scopedSlots = { default: children[0] };
-      children.length = 0;
-    }
-    if (normalizationType === ALWAYS_NORMALIZE) {
-      children = normalizeChildren(children);
-    } else if (normalizationType === SIMPLE_NORMALIZE) {
-      children = simpleNormalizeChildren(children);
-    }
-    var vnode, ns;
-    if (typeof tag === 'string') {
-      var Ctor;
-      ns = (context.$vnode && context.$vnode.ns) || config.getTagNamespace(tag);
-      if (config.isReservedTag(tag)) {
-        // platform built-in elements
-        vnode = new VNode(
-          config.parsePlatformTagName(tag), data, children,
-          undefined, undefined, context
-        );
-      } else if ((!data || !data.pre) && isDef(Ctor = resolveAsset(context.$options, 'components', tag))) {
-        // component
-        vnode = createComponent(Ctor, data, context, children, tag);
-      } else {
-        // unknown or unlisted namespaced elements
-        // check at runtime because it may get assigned a namespace when its
-        // parent normalizes children
-        vnode = new VNode(
-          tag, data, children,
-          undefined, undefined, context
-        );
-      }
-    } else {
-      // direct component options / constructor
-      vnode = createComponent(tag, data, context, children);
-    }
-    if (Array.isArray(vnode)) {
-      return vnode
-    } else if (isDef(vnode)) {
-      if (isDef(ns)) { applyNS(vnode, ns); }
-      if (isDef(data)) { registerDeepBindings(data); }
-      return vnode
-    } else {
-      return createEmptyVNode()
-    }
-  }
-
-  function applyNS (vnode, ns, force) {
-    vnode.ns = ns;
-    if (vnode.tag === 'foreignObject') {
-      // use default namespace inside foreignObject
-      ns = undefined;
-      force = true;
-    }
-    if (isDef(vnode.children)) {
-      for (var i = 0, l = vnode.children.length; i < l; i++) {
-        var child = vnode.children[i];
-        if (isDef(child.tag) && (
-          isUndef(child.ns) || (isTrue(force) && child.tag !== 'svg'))) {
-          applyNS(child, ns, force);
-        }
-      }
-    }
-  }
-
-  // ref #5318
-  // necessary to ensure parent re-render when deep bindings like :style and
-  // :class are used on slot nodes
-  function registerDeepBindings (data) {
-    if (isObject(data.style)) {
-      traverse(data.style);
-    }
-    if (isObject(data.class)) {
-      traverse(data.class);
-    }
-  }
-
-  /*  */
-
-  function initRender (vm) {
-    vm._vnode = null; // the root of the child tree
-    vm._staticTrees = null; // v-once cached trees
-    var options = vm.$options;
-    var parentVnode = vm.$vnode = options._parentVnode; // the placeholder node in parent tree
-    var renderContext = parentVnode && parentVnode.context;
-    vm.$slots = resolveSlots(options._renderChildren, renderContext);
-    vm.$scopedSlots = emptyObject;
-    // bind the createElement fn to this instance
-    // so that we get proper render context inside it.
-    // args order: tag, data, children, normalizationType, alwaysNormalize
-    // internal version is used by render functions compiled from templates
-    vm._c = function (a, b, c, d) { return createElement(vm, a, b, c, d, false); };
-    // normalization is always applied for the public version, used in
-    // user-written render functions.
-    vm.$createElement = function (a, b, c, d) { return createElement(vm, a, b, c, d, true); };
-
-    // $attrs & $listeners are exposed for easier HOC creation.
-    // they need to be reactive so that HOCs using them are always updated
-    var parentData = parentVnode && parentVnode.data;
-
-    /* istanbul ignore else */
-    {
-      defineReactive$$1(vm, '$attrs', parentData && parentData.attrs || emptyObject, function () {
-        !isUpdatingChildComponent && warn("$attrs is readonly.", vm);
-      }, true);
-      defineReactive$$1(vm, '$listeners', options._parentListeners || emptyObject, function () {
-        !isUpdatingChildComponent && warn("$listeners is readonly.", vm);
-      }, true);
-    }
-  }
-
-  var currentRenderingInstance = null;
-
-  function renderMixin (Vue) {
-    // install runtime convenience helpers
-    installRenderHelpers(Vue.prototype);
-
-    Vue.prototype.$nextTick = function (fn) {
-      return nextTick(fn, this)
-    };
-
-    Vue.prototype._render = function () {
-      var vm = this;
-      var ref = vm.$options;
-      var render = ref.render;
-      var _parentVnode = ref._parentVnode;
-
-      if (_parentVnode) {
-        vm.$scopedSlots = normalizeScopedSlots(
-          _parentVnode.data.scopedSlots,
-          vm.$slots,
-          vm.$scopedSlots
-        );
-      }
-
-      // set parent vnode. this allows render functions to have access
-      // to the data on the placeholder node.
-      vm.$vnode = _parentVnode;
-      // render self
-      var vnode;
-      try {
-        // There's no need to maintain a stack becaues all render fns are called
-        // separately from one another. Nested component's render fns are called
-        // when parent component is patched.
-        currentRenderingInstance = vm;
-        vnode = render.call(vm._renderProxy, vm.$createElement);
-      } catch (e) {
-        handleError(e, vm, "render");
-        // return error render result,
-        // or previous vnode to prevent render error causing blank component
-        /* istanbul ignore else */
-        if (vm.$options.renderError) {
-          try {
-            vnode = vm.$options.renderError.call(vm._renderProxy, vm.$createElement, e);
-          } catch (e) {
-            handleError(e, vm, "renderError");
-            vnode = vm._vnode;
-          }
-        } else {
-          vnode = vm._vnode;
-        }
-      } finally {
-        currentRenderingInstance = null;
-      }
-      // if the returned array contains only a single node, allow it
-      if (Array.isArray(vnode) && vnode.length === 1) {
-        vnode = vnode[0];
-      }
-      // return empty vnode in case the render function errored out
-      if (!(vnode instanceof VNode)) {
-        if (Array.isArray(vnode)) {
-          warn(
-            'Multiple root nodes returned from render function. Render function ' +
-            'should return a single root node.',
-            vm
-          );
-        }
-        vnode = createEmptyVNode();
-      }
-      // set parent
-      vnode.parent = _parentVnode;
-      return vnode
-    };
-  }
-
-  /*  */
-
-  function ensureCtor (comp, base) {
-    if (
-      comp.__esModule ||
-      (hasSymbol && comp[Symbol.toStringTag] === 'Module')
-    ) {
-      comp = comp.default;
-    }
-    return isObject(comp)
-      ? base.extend(comp)
-      : comp
-  }
-
-  function createAsyncPlaceholder (
-    factory,
-    data,
-    context,
-    children,
-    tag
-  ) {
-    var node = createEmptyVNode();
-    node.asyncFactory = factory;
-    node.asyncMeta = { data: data, context: context, children: children, tag: tag };
-    return node
-  }
-
-  function resolveAsyncComponent (
-    factory,
-    baseCtor
-  ) {
-    if (isTrue(factory.error) && isDef(factory.errorComp)) {
-      return factory.errorComp
-    }
-
-    if (isDef(factory.resolved)) {
-      return factory.resolved
-    }
-
-    var owner = currentRenderingInstance;
-    if (owner && isDef(factory.owners) && factory.owners.indexOf(owner) === -1) {
-      // already pending
-      factory.owners.push(owner);
-    }
-
-    if (isTrue(factory.loading) && isDef(factory.loadingComp)) {
-      return factory.loadingComp
-    }
-
-    if (owner && !isDef(factory.owners)) {
-      var owners = factory.owners = [owner];
-      var sync = true;
-      var timerLoading = null;
-      var timerTimeout = null
-
-      ;(owner).$on('hook:destroyed', function () { return remove(owners, owner); });
-
-      var forceRender = function (renderCompleted) {
-        for (var i = 0, l = owners.length; i < l; i++) {
-          (owners[i]).$forceUpdate();
-        }
-
-        if (renderCompleted) {
-          owners.length = 0;
-          if (timerLoading !== null) {
-            clearTimeout(timerLoading);
-            timerLoading = null;
-          }
-          if (timerTimeout !== null) {
-            clearTimeout(timerTimeout);
-            timerTimeout = null;
-          }
-        }
-      };
-
-      var resolve = once(function (res) {
-        // cache resolved
-        factory.resolved = ensureCtor(res, baseCtor);
-        // invoke callbacks only if this is not a synchronous resolve
-        // (async resolves are shimmed as synchronous during SSR)
-        if (!sync) {
-          forceRender(true);
-        } else {
-          owners.length = 0;
-        }
-      });
-
-      var reject = once(function (reason) {
-        warn(
-          "Failed to resolve async component: " + (String(factory)) +
-          (reason ? ("\nReason: " + reason) : '')
-        );
-        if (isDef(factory.errorComp)) {
-          factory.error = true;
-          forceRender(true);
-        }
-      });
-
-      var res = factory(resolve, reject);
-
-      if (isObject(res)) {
-        if (isPromise(res)) {
-          // () => Promise
-          if (isUndef(factory.resolved)) {
-            res.then(resolve, reject);
-          }
-        } else if (isPromise(res.component)) {
-          res.component.then(resolve, reject);
-
-          if (isDef(res.error)) {
-            factory.errorComp = ensureCtor(res.error, baseCtor);
-          }
-
-          if (isDef(res.loading)) {
-            factory.loadingComp = ensureCtor(res.loading, baseCtor);
-            if (res.delay === 0) {
-              factory.loading = true;
-            } else {
-              timerLoading = setTimeout(function () {
-                timerLoading = null;
-                if (isUndef(factory.resolved) && isUndef(factory.error)) {
-                  factory.loading = true;
-                  forceRender(false);
-                }
-              }, res.delay || 200);
-            }
-          }
-
-          if (isDef(res.timeout)) {
-            timerTimeout = setTimeout(function () {
-              timerTimeout = null;
-              if (isUndef(factory.resolved)) {
-                reject(
-                  "timeout (" + (res.timeout) + "ms)"
-                );
-              }
-            }, res.timeout);
-          }
-        }
-      }
-
-      sync = false;
-      // return in case resolved synchronously
-      return factory.loading
-        ? factory.loadingComp
-        : factory.resolved
-    }
-  }
-
-  /*  */
-
-  function isAsyncPlaceholder (node) {
-    return node.isComment && node.asyncFactory
-  }
-
-  /*  */
-
-  function getFirstComponentChild (children) {
-    if (Array.isArray(children)) {
-      for (var i = 0; i < children.length; i++) {
-        var c = children[i];
-        if (isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) {
-          return c
-        }
-      }
-    }
-  }
-
-  /*  */
-
-  /*  */
-
-  function initEvents (vm) {
-    vm._events = Object.create(null);
-    vm._hasHookEvent = false;
-    // init parent attached events
-    var listeners = vm.$options._parentListeners;
-    if (listeners) {
-      updateComponentListeners(vm, listeners);
-    }
-  }
-
-  var target;
-
-  function add (event, fn) {
-    target.$on(event, fn);
-  }
-
-  function remove$1 (event, fn) {
-    target.$off(event, fn);
-  }
-
-  function createOnceHandler (event, fn) {
-    var _target = target;
-    return function onceHandler () {
-      var res = fn.apply(null, arguments);
-      if (res !== null) {
-        _target.$off(event, onceHandler);
-      }
-    }
-  }
-
-  function updateComponentListeners (
-    vm,
-    listeners,
-    oldListeners
-  ) {
-    target = vm;
-    updateListeners(listeners, oldListeners || {}, add, remove$1, createOnceHandler, vm);
-    target = undefined;
-  }
-
-  function eventsMixin (Vue) {
-    var hookRE = /^hook:/;
-    Vue.prototype.$on = function (event, fn) {
-      var vm = this;
-      if (Array.isArray(event)) {
-        for (var i = 0, l = event.length; i < l; i++) {
-          vm.$on(event[i], fn);
-        }
-      } else {
-        (vm._events[event] || (vm._events[event] = [])).push(fn);
-        // optimize hook:event cost by using a boolean flag marked at registration
-        // instead of a hash lookup
-        if (hookRE.test(event)) {
-          vm._hasHookEvent = true;
-        }
-      }
-      return vm
-    };
-
-    Vue.prototype.$once = function (event, fn) {
-      var vm = this;
-      function on () {
-        vm.$off(event, on);
-        fn.apply(vm, arguments);
-      }
-      on.fn = fn;
-      vm.$on(event, on);
-      return vm
-    };
-
-    Vue.prototype.$off = function (event, fn) {
-      var vm = this;
-      // all
-      if (!arguments.length) {
-        vm._events = Object.create(null);
-        return vm
-      }
-      // array of events
-      if (Array.isArray(event)) {
-        for (var i$1 = 0, l = event.length; i$1 < l; i$1++) {
-          vm.$off(event[i$1], fn);
-        }
-        return vm
-      }
-      // specific event
-      var cbs = vm._events[event];
-      if (!cbs) {
-        return vm
-      }
-      if (!fn) {
-        vm._events[event] = null;
-        return vm
-      }
-      // specific handler
-      var cb;
-      var i = cbs.length;
-      while (i--) {
-        cb = cbs[i];
-        if (cb === fn || cb.fn === fn) {
-          cbs.splice(i, 1);
-          break
-        }
-      }
-      return vm
-    };
-
-    Vue.prototype.$emit = function (event) {
-      var vm = this;
-      {
-        var lowerCaseEvent = event.toLowerCase();
-        if (lowerCaseEvent !== event && vm._events[lowerCaseEvent]) {
-          tip(
-            "Event \"" + lowerCaseEvent + "\" is emitted in component " +
-            (formatComponentName(vm)) + " but the handler is registered for \"" + event + "\". " +
-            "Note that HTML attributes are case-insensitive and you cannot use " +
-            "v-on to listen to camelCase events when using in-DOM templates. " +
-            "You should probably use \"" + (hyphenate(event)) + "\" instead of \"" + event + "\"."
-          );
-        }
-      }
-      var cbs = vm._events[event];
-      if (cbs) {
-        cbs = cbs.length > 1 ? toArray(cbs) : cbs;
-        var args = toArray(arguments, 1);
-        var info = "event handler for \"" + event + "\"";
-        for (var i = 0, l = cbs.length; i < l; i++) {
-          invokeWithErrorHandling(cbs[i], vm, args, vm, info);
-        }
-      }
-      return vm
-    };
-  }
-
-  /*  */
-
-  var activeInstance = null;
-  var isUpdatingChildComponent = false;
-
-  function setActiveInstance(vm) {
-    var prevActiveInstance = activeInstance;
-    activeInstance = vm;
-    return function () {
-      activeInstance = prevActiveInstance;
-    }
-  }
-
-  function initLifecycle (vm) {
-    var options = vm.$options;
-
-    // locate first non-abstract parent
-    var parent = options.parent;
-    if (parent && !options.abstract) {
-      while (parent.$options.abstract && parent.$parent) {
-        parent = parent.$parent;
-      }
-      parent.$children.push(vm);
-    }
-
-    vm.$parent = parent;
-    vm.$root = parent ? parent.$root : vm;
-
-    vm.$children = [];
-    vm.$refs = {};
-
-    vm._watcher = null;
-    vm._inactive = null;
-    vm._directInactive = false;
-    vm._isMounted = false;
-    vm._isDestroyed = false;
-    vm._isBeingDestroyed = false;
-  }
-
-  function lifecycleMixin (Vue) {
-    Vue.prototype._update = function (vnode, hydrating) {
-      var vm = this;
-      var prevEl = vm.$el;
-      var prevVnode = vm._vnode;
-      var restoreActiveInstance = setActiveInstance(vm);
-      vm._vnode = vnode;
-      // Vue.prototype.__patch__ is injected in entry points
-      // based on the rendering backend used.
-      if (!prevVnode) {
-        // initial render
-        vm.$el = vm.__patch__(vm.$el, vnode, hydrating, false /* removeOnly */);
-      } else {
-        // updates
-        vm.$el = vm.__patch__(prevVnode, vnode);
-      }
-      restoreActiveInstance();
-      // update __vue__ reference
-      if (prevEl) {
-        prevEl.__vue__ = null;
-      }
-      if (vm.$el) {
-        vm.$el.__vue__ = vm;
-      }
-      // if parent is an HOC, update its $el as well
-      if (vm.$vnode && vm.$parent && vm.$vnode === vm.$parent._vnode) {
-        vm.$parent.$el = vm.$el;
-      }
-      // updated hook is called by the scheduler to ensure that children are
-      // updated in a parent's updated hook.
-    };
-
-    Vue.prototype.$forceUpdate = function () {
-      var vm = this;
-      if (vm._watcher) {
-        vm._watcher.update();
-      }
-    };
-
-    Vue.prototype.$destroy = function () {
-      var vm = this;
-      if (vm._isBeingDestroyed) {
-        return
-      }
-      callHook(vm, 'beforeDestroy');
-      vm._isBeingDestroyed = true;
-      // remove self from parent
-      var parent = vm.$parent;
-      if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) {
-        remove(parent.$children, vm);
-      }
-      // teardown watchers
-      if (vm._watcher) {
-        vm._watcher.teardown();
-      }
-      var i = vm._watchers.length;
-      while (i--) {
-        vm._watchers[i].teardown();
-      }
-      // remove reference from data ob
-      // frozen object may not have observer.
-      if (vm._data.__ob__) {
-        vm._data.__ob__.vmCount--;
-      }
-      // call the last hook...
-      vm._isDestroyed = true;
-      // invoke destroy hooks on current rendered tree
-      vm.__patch__(vm._vnode, null);
-      // fire destroyed hook
-      callHook(vm, 'destroyed');
-      // turn off all instance listeners.
-      vm.$off();
-      // remove __vue__ reference
-      if (vm.$el) {
-        vm.$el.__vue__ = null;
-      }
-      // release circular reference (#6759)
-      if (vm.$vnode) {
-        vm.$vnode.parent = null;
-      }
-    };
-  }
-
-  function mountComponent (
-    vm,
-    el,
-    hydrating
-  ) {
-    vm.$el = el;
-    if (!vm.$options.render) {
-      vm.$options.render = createEmptyVNode;
-      {
-        /* istanbul ignore if */
-        if ((vm.$options.template && vm.$options.template.charAt(0) !== '#') ||
-          vm.$options.el || el) {
-          warn(
-            'You are using the runtime-only build of Vue where the template ' +
-            'compiler is not available. Either pre-compile the templates into ' +
-            'render functions, or use the compiler-included build.',
-            vm
-          );
-        } else {
-          warn(
-            'Failed to mount component: template or render function not defined.',
-            vm
-          );
-        }
-      }
-    }
-    callHook(vm, 'beforeMount');
-
-    var updateComponent;
-    /* istanbul ignore if */
-    if (config.performance && mark) {
-      updateComponent = function () {
-        var name = vm._name;
-        var id = vm._uid;
-        var startTag = "vue-perf-start:" + id;
-        var endTag = "vue-perf-end:" + id;
-
-        mark(startTag);
-        var vnode = vm._render();
-        mark(endTag);
-        measure(("vue " + name + " render"), startTag, endTag);
-
-        mark(startTag);
-        vm._update(vnode, hydrating);
-        mark(endTag);
-        measure(("vue " + name + " patch"), startTag, endTag);
-      };
-    } else {
-      updateComponent = function () {
-        vm._update(vm._render(), hydrating);
-      };
-    }
-
-    // we set this to vm._watcher inside the watcher's constructor
-    // since the watcher's initial patch may call $forceUpdate (e.g. inside child
-    // component's mounted hook), which relies on vm._watcher being already defined
-    new Watcher(vm, updateComponent, noop, {
-      before: function before () {
-        if (vm._isMounted && !vm._isDestroyed) {
-          callHook(vm, 'beforeUpdate');
-        }
-      }
-    }, true /* isRenderWatcher */);
-    hydrating = false;
-
-    // manually mounted instance, call mounted on self
-    // mounted is called for render-created child components in its inserted hook
-    if (vm.$vnode == null) {
-      vm._isMounted = true;
-      callHook(vm, 'mounted');
-    }
-    return vm
-  }
-
-  function updateChildComponent (
-    vm,
-    propsData,
-    listeners,
-    parentVnode,
-    renderChildren
-  ) {
-    {
-      isUpdatingChildComponent = true;
-    }
-
-    // determine whether component has slot children
-    // we need to do this before overwriting $options._renderChildren.
-
-    // check if there are dynamic scopedSlots (hand-written or compiled but with
-    // dynamic slot names). Static scoped slots compiled from template has the
-    // "$stable" marker.
-    var newScopedSlots = parentVnode.data.scopedSlots;
-    var oldScopedSlots = vm.$scopedSlots;
-    var hasDynamicScopedSlot = !!(
-      (newScopedSlots && !newScopedSlots.$stable) ||
-      (oldScopedSlots !== emptyObject && !oldScopedSlots.$stable) ||
-      (newScopedSlots && vm.$scopedSlots.$key !== newScopedSlots.$key)
-    );
-
-    // Any static slot children from the parent may have changed during parent's
-    // update. Dynamic scoped slots may also have changed. In such cases, a forced
-    // update is necessary to ensure correctness.
-    var needsForceUpdate = !!(
-      renderChildren ||               // has new static slots
-      vm.$options._renderChildren ||  // has old static slots
-      hasDynamicScopedSlot
-    );
-
-    vm.$options._parentVnode = parentVnode;
-    vm.$vnode = parentVnode; // update vm's placeholder node without re-render
-
-    if (vm._vnode) { // update child tree's parent
-      vm._vnode.parent = parentVnode;
-    }
-    vm.$options._renderChildren = renderChildren;
-
-    // update $attrs and $listeners hash
-    // these are also reactive so they may trigger child update if the child
-    // used them during render
-    vm.$attrs = parentVnode.data.attrs || emptyObject;
-    vm.$listeners = listeners || emptyObject;
-
-    // update props
-    if (propsData && vm.$options.props) {
-      toggleObserving(false);
-      var props = vm._props;
-      var propKeys = vm.$options._propKeys || [];
-      for (var i = 0; i < propKeys.length; i++) {
-        var key = propKeys[i];
-        var propOptions = vm.$options.props; // wtf flow?
-        props[key] = validateProp(key, propOptions, propsData, vm);
-      }
-      toggleObserving(true);
-      // keep a copy of raw propsData
-      vm.$options.propsData = propsData;
-    }
-
-    // update listeners
-    listeners = listeners || emptyObject;
-    var oldListeners = vm.$options._parentListeners;
-    vm.$options._parentListeners = listeners;
-    updateComponentListeners(vm, listeners, oldListeners);
-
-    // resolve slots + force update if has children
-    if (needsForceUpdate) {
-      vm.$slots = resolveSlots(renderChildren, parentVnode.context);
-      vm.$forceUpdate();
-    }
-
-    {
-      isUpdatingChildComponent = false;
-    }
-  }
-
-  function isInInactiveTree (vm) {
-    while (vm && (vm = vm.$parent)) {
-      if (vm._inactive) { return true }
-    }
-    return false
-  }
-
-  function activateChildComponent (vm, direct) {
-    if (direct) {
-      vm._directInactive = false;
-      if (isInInactiveTree(vm)) {
-        return
-      }
-    } else if (vm._directInactive) {
-      return
-    }
-    if (vm._inactive || vm._inactive === null) {
-      vm._inactive = false;
-      for (var i = 0; i < vm.$children.length; i++) {
-        activateChildComponent(vm.$children[i]);
-      }
-      callHook(vm, 'activated');
-    }
-  }
-
-  function deactivateChildComponent (vm, direct) {
-    if (direct) {
-      vm._directInactive = true;
-      if (isInInactiveTree(vm)) {
-        return
-      }
-    }
-    if (!vm._inactive) {
-      vm._inactive = true;
-      for (var i = 0; i < vm.$children.length; i++) {
-        deactivateChildComponent(vm.$children[i]);
-      }
-      callHook(vm, 'deactivated');
-    }
-  }
-
-  function callHook (vm, hook) {
-    // #7573 disable dep collection when invoking lifecycle hooks
-    pushTarget();
-    var handlers = vm.$options[hook];
-    var info = hook + " hook";
-    if (handlers) {
-      for (var i = 0, j = handlers.length; i < j; i++) {
-        invokeWithErrorHandling(handlers[i], vm, null, vm, info);
-      }
-    }
-    if (vm._hasHookEvent) {
-      vm.$emit('hook:' + hook);
-    }
-    popTarget();
-  }
-
-  /*  */
-
-  var MAX_UPDATE_COUNT = 100;
-
-  var queue = [];
-  var activatedChildren = [];
-  var has = {};
-  var circular = {};
-  var waiting = false;
-  var flushing = false;
-  var index = 0;
-
-  /**
-   * Reset the scheduler's state.
-   */
-  function resetSchedulerState () {
-    index = queue.length = activatedChildren.length = 0;
-    has = {};
-    {
-      circular = {};
-    }
-    waiting = flushing = false;
-  }
-
-  // Async edge case #6566 requires saving the timestamp when event listeners are
-  // attached. However, calling performance.now() has a perf overhead especially
-  // if the page has thousands of event listeners. Instead, we take a timestamp
-  // every time the scheduler flushes and use that for all event listeners
-  // attached during that flush.
-  var currentFlushTimestamp = 0;
-
-  // Async edge case fix requires storing an event listener's attach timestamp.
-  var getNow = Date.now;
-
-  // Determine what event timestamp the browser is using. Annoyingly, the
-  // timestamp can either be hi-res (relative to page load) or low-res
-  // (relative to UNIX epoch), so in order to compare time we have to use the
-  // same timestamp type when saving the flush timestamp.
-  // All IE versions use low-res event timestamps, and have problematic clock
-  // implementations (#9632)
-  if (inBrowser && !isIE) {
-    var performance = window.performance;
-    if (
-      performance &&
-      typeof performance.now === 'function' &&
-      getNow() > document.createEvent('Event').timeStamp
-    ) {
-      // if the event timestamp, although evaluated AFTER the Date.now(), is
-      // smaller than it, it means the event is using a hi-res timestamp,
-      // and we need to use the hi-res version for event listener timestamps as
-      // well.
-      getNow = function () { return performance.now(); };
-    }
-  }
-
-  /**
-   * Flush both queues and run the watchers.
-   */
-  function flushSchedulerQueue () {
-    currentFlushTimestamp = getNow();
-    flushing = true;
-    var watcher, id;
-
-    // Sort queue before flush.
-    // This ensures that:
-    // 1. Components are updated from parent to child. (because parent is always
-    //    created before the child)
-    // 2. A component's user watchers are run before its render watcher (because
-    //    user watchers are created before the render watcher)
-    // 3. If a component is destroyed during a parent component's watcher run,
-    //    its watchers can be skipped.
-    queue.sort(function (a, b) { return a.id - b.id; });
-
-    // do not cache length because more watchers might be pushed
-    // as we run existing watchers
-    for (index = 0; index < queue.length; index++) {
-      watcher = queue[index];
-      if (watcher.before) {
-        watcher.before();
-      }
-      id = watcher.id;
-      has[id] = null;
-      watcher.run();
-      // in dev build, check and stop circular updates.
-      if (has[id] != null) {
-        circular[id] = (circular[id] || 0) + 1;
-        if (circular[id] > MAX_UPDATE_COUNT) {
-          warn(
-            'You may have an infinite update loop ' + (
-              watcher.user
-                ? ("in watcher with expression \"" + (watcher.expression) + "\"")
-                : "in a component render function."
-            ),
-            watcher.vm
-          );
-          break
-        }
-      }
-    }
-
-    // keep copies of post queues before resetting state
-    var activatedQueue = activatedChildren.slice();
-    var updatedQueue = queue.slice();
-
-    resetSchedulerState();
-
-    // call component updated and activated hooks
-    callActivatedHooks(activatedQueue);
-    callUpdatedHooks(updatedQueue);
-
-    // devtool hook
-    /* istanbul ignore if */
-    if (devtools && config.devtools) {
-      devtools.emit('flush');
-    }
-  }
-
-  function callUpdatedHooks (queue) {
-    var i = queue.length;
-    while (i--) {
-      var watcher = queue[i];
-      var vm = watcher.vm;
-      if (vm._watcher === watcher && vm._isMounted && !vm._isDestroyed) {
-        callHook(vm, 'updated');
-      }
-    }
-  }
-
-  /**
-   * Queue a kept-alive component that was activated during patch.
-   * The queue will be processed after the entire tree has been patched.
-   */
-  function queueActivatedComponent (vm) {
-    // setting _inactive to false here so that a render function can
-    // rely on checking whether it's in an inactive tree (e.g. router-view)
-    vm._inactive = false;
-    activatedChildren.push(vm);
-  }
-
-  function callActivatedHooks (queue) {
-    for (var i = 0; i < queue.length; i++) {
-      queue[i]._inactive = true;
-      activateChildComponent(queue[i], true /* true */);
-    }
-  }
-
-  /**
-   * Push a watcher into the watcher queue.
-   * Jobs with duplicate IDs will be skipped unless it's
-   * pushed when the queue is being flushed.
-   */
-  function queueWatcher (watcher) {
-    var id = watcher.id;
-    if (has[id] == null) {
-      has[id] = true;
-      if (!flushing) {
-        queue.push(watcher);
-      } else {
-        // if already flushing, splice the watcher based on its id
-        // if already past its id, it will be run next immediately.
-        var i = queue.length - 1;
-        while (i > index && queue[i].id > watcher.id) {
-          i--;
-        }
-        queue.splice(i + 1, 0, watcher);
-      }
-      // queue the flush
-      if (!waiting) {
-        waiting = true;
-
-        if (!config.async) {
-          flushSchedulerQueue();
-          return
-        }
-        nextTick(flushSchedulerQueue);
-      }
-    }
-  }
-
-  /*  */
-
-
-
-  var uid$2 = 0;
-
-  /**
-   * A watcher parses an expression, collects dependencies,
-   * and fires callback when the expression value changes.
-   * This is used for both the $watch() api and directives.
-   */
-  var Watcher = function Watcher (
-    vm,
-    expOrFn,
-    cb,
-    options,
-    isRenderWatcher
-  ) {
-    this.vm = vm;
-    if (isRenderWatcher) {
-      vm._watcher = this;
-    }
-    vm._watchers.push(this);
-    // options
-    if (options) {
-      this.deep = !!options.deep;
-      this.user = !!options.user;
-      this.lazy = !!options.lazy;
-      this.sync = !!options.sync;
-      this.before = options.before;
-    } else {
-      this.deep = this.user = this.lazy = this.sync = false;
-    }
-    this.cb = cb;
-    this.id = ++uid$2; // uid for batching
-    this.active = true;
-    this.dirty = this.lazy; // for lazy watchers
-    this.deps = [];
-    this.newDeps = [];
-    this.depIds = new _Set();
-    this.newDepIds = new _Set();
-    this.expression = expOrFn.toString();
-    // parse expression for getter
-    if (typeof expOrFn === 'function') {
-      this.getter = expOrFn;
-    } else {
-      this.getter = parsePath(expOrFn);
-      if (!this.getter) {
-        this.getter = noop;
-        warn(
-          "Failed watching path: \"" + expOrFn + "\" " +
-          'Watcher only accepts simple dot-delimited paths. ' +
-          'For full control, use a function instead.',
-          vm
-        );
-      }
-    }
-    this.value = this.lazy
-      ? undefined
-      : this.get();
-  };
-
-  /**
-   * Evaluate the getter, and re-collect dependencies.
-   */
-  Watcher.prototype.get = function get () {
-    pushTarget(this);
-    var value;
-    var vm = this.vm;
-    try {
-      value = this.getter.call(vm, vm);
-    } catch (e) {
-      if (this.user) {
-        handleError(e, vm, ("getter for watcher \"" + (this.expression) + "\""));
-      } else {
-        throw e
-      }
-    } finally {
-      // "touch" every property so they are all tracked as
-      // dependencies for deep watching
-      if (this.deep) {
-        traverse(value);
-      }
-      popTarget();
-      this.cleanupDeps();
-    }
-    return value
-  };
-
-  /**
-   * Add a dependency to this directive.
-   */
-  Watcher.prototype.addDep = function addDep (dep) {
-    var id = dep.id;
-    if (!this.newDepIds.has(id)) {
-      this.newDepIds.add(id);
-      this.newDeps.push(dep);
-      if (!this.depIds.has(id)) {
-        dep.addSub(this);
-      }
-    }
-  };
-
-  /**
-   * Clean up for dependency collection.
-   */
-  Watcher.prototype.cleanupDeps = function cleanupDeps () {
-    var i = this.deps.length;
-    while (i--) {
-      var dep = this.deps[i];
-      if (!this.newDepIds.has(dep.id)) {
-        dep.removeSub(this);
-      }
-    }
-    var tmp = this.depIds;
-    this.depIds = this.newDepIds;
-    this.newDepIds = tmp;
-    this.newDepIds.clear();
-    tmp = this.deps;
-    this.deps = this.newDeps;
-    this.newDeps = tmp;
-    this.newDeps.length = 0;
-  };
-
-  /**
-   * Subscriber interface.
-   * Will be called when a dependency changes.
-   */
-  Watcher.prototype.update = function update () {
-    /* istanbul ignore else */
-    if (this.lazy) {
-      this.dirty = true;
-    } else if (this.sync) {
-      this.run();
-    } else {
-      queueWatcher(this);
-    }
-  };
-
-  /**
-   * Scheduler job interface.
-   * Will be called by the scheduler.
-   */
-  Watcher.prototype.run = function run () {
-    if (this.active) {
-      var value = this.get();
-      if (
-        value !== this.value ||
-        // Deep watchers and watchers on Object/Arrays should fire even
-        // when the value is the same, because the value may
-        // have mutated.
-        isObject(value) ||
-        this.deep
-      ) {
-        // set new value
-        var oldValue = this.value;
-        this.value = value;
-        if (this.user) {
-          try {
-            this.cb.call(this.vm, value, oldValue);
-          } catch (e) {
-            handleError(e, this.vm, ("callback for watcher \"" + (this.expression) + "\""));
-          }
-        } else {
-          this.cb.call(this.vm, value, oldValue);
-        }
-      }
-    }
-  };
-
-  /**
-   * Evaluate the value of the watcher.
-   * This only gets called for lazy watchers.
-   */
-  Watcher.prototype.evaluate = function evaluate () {
-    this.value = this.get();
-    this.dirty = false;
-  };
-
-  /**
-   * Depend on all deps collected by this watcher.
-   */
-  Watcher.prototype.depend = function depend () {
-    var i = this.deps.length;
-    while (i--) {
-      this.deps[i].depend();
-    }
-  };
-
-  /**
-   * Remove self from all dependencies' subscriber list.
-   */
-  Watcher.prototype.teardown = function teardown () {
-    if (this.active) {
-      // remove self from vm's watcher list
-      // this is a somewhat expensive operation so we skip it
-      // if the vm is being destroyed.
-      if (!this.vm._isBeingDestroyed) {
-        remove(this.vm._watchers, this);
-      }
-      var i = this.deps.length;
-      while (i--) {
-        this.deps[i].removeSub(this);
-      }
-      this.active = false;
-    }
-  };
-
-  /*  */
-
-  var sharedPropertyDefinition = {
-    enumerable: true,
-    configurable: true,
-    get: noop,
-    set: noop
-  };
-
-  function proxy (target, sourceKey, key) {
-    sharedPropertyDefinition.get = function proxyGetter () {
-      return this[sourceKey][key]
-    };
-    sharedPropertyDefinition.set = function proxySetter (val) {
-      this[sourceKey][key] = val;
-    };
-    Object.defineProperty(target, key, sharedPropertyDefinition);
-  }
-
-  function initState (vm) {
-    vm._watchers = [];
-    var opts = vm.$options;
-    if (opts.props) { initProps(vm, opts.props); }
-    if (opts.methods) { initMethods(vm, opts.methods); }
-    if (opts.data) {
-      initData(vm);
-    } else {
-      observe(vm._data = {}, true /* asRootData */);
-    }
-    if (opts.computed) { initComputed(vm, opts.computed); }
-    if (opts.watch && opts.watch !== nativeWatch) {
-      initWatch(vm, opts.watch);
-    }
-  }
-
-  function initProps (vm, propsOptions) {
-    var propsData = vm.$options.propsData || {};
-    var props = vm._props = {};
-    // cache prop keys so that future props updates can iterate using Array
-    // instead of dynamic object key enumeration.
-    var keys = vm.$options._propKeys = [];
-    var isRoot = !vm.$parent;
-    // root instance props should be converted
-    if (!isRoot) {
-      toggleObserving(false);
-    }
-    var loop = function ( key ) {
-      keys.push(key);
-      var value = validateProp(key, propsOptions, propsData, vm);
-      /* istanbul ignore else */
-      {
-        var hyphenatedKey = hyphenate(key);
-        if (isReservedAttribute(hyphenatedKey) ||
-            config.isReservedAttr(hyphenatedKey)) {
-          warn(
-            ("\"" + hyphenatedKey + "\" is a reserved attribute and cannot be used as component prop."),
-            vm
-          );
-        }
-        defineReactive$$1(props, key, value, function () {
-          if (!isRoot && !isUpdatingChildComponent) {
-            warn(
-              "Avoid mutating a prop directly since the value will be " +
-              "overwritten whenever the parent component re-renders. " +
-              "Instead, use a data or computed property based on the prop's " +
-              "value. Prop being mutated: \"" + key + "\"",
-              vm
-            );
-          }
-        });
-      }
-      // static props are already proxied on the component's prototype
-      // during Vue.extend(). We only need to proxy props defined at
-      // instantiation here.
-      if (!(key in vm)) {
-        proxy(vm, "_props", key);
-      }
-    };
-
-    for (var key in propsOptions) loop( key );
-    toggleObserving(true);
-  }
-
-  function initData (vm) {
-    var data = vm.$options.data;
-    data = vm._data = typeof data === 'function'
-      ? getData(data, vm)
-      : data || {};
-    if (!isPlainObject(data)) {
-      data = {};
-      warn(
-        'data functions should return an object:\n' +
-        'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function',
-        vm
-      );
-    }
-    // proxy data on instance
-    var keys = Object.keys(data);
-    var props = vm.$options.props;
-    var methods = vm.$options.methods;
-    var i = keys.length;
-    while (i--) {
-      var key = keys[i];
-      {
-        if (methods && hasOwn(methods, key)) {
-          warn(
-            ("Method \"" + key + "\" has already been defined as a data property."),
-            vm
-          );
-        }
-      }
-      if (props && hasOwn(props, key)) {
-        warn(
-          "The data property \"" + key + "\" is already declared as a prop. " +
-          "Use prop default value instead.",
-          vm
-        );
-      } else if (!isReserved(key)) {
-        proxy(vm, "_data", key);
-      }
-    }
-    // observe data
-    observe(data, true /* asRootData */);
-  }
-
-  function getData (data, vm) {
-    // #7573 disable dep collection when invoking data getters
-    pushTarget();
-    try {
-      return data.call(vm, vm)
-    } catch (e) {
-      handleError(e, vm, "data()");
-      return {}
-    } finally {
-      popTarget();
-    }
-  }
-
-  var computedWatcherOptions = { lazy: true };
-
-  function initComputed (vm, computed) {
-    // $flow-disable-line
-    var watchers = vm._computedWatchers = Object.create(null);
-    // computed properties are just getters during SSR
-    var isSSR = isServerRendering();
-
-    for (var key in computed) {
-      var userDef = computed[key];
-      var getter = typeof userDef === 'function' ? userDef : userDef.get;
-      if (getter == null) {
-        warn(
-          ("Getter is missing for computed property \"" + key + "\"."),
-          vm
-        );
-      }
-
-      if (!isSSR) {
-        // create internal watcher for the computed property.
-        watchers[key] = new Watcher(
-          vm,
-          getter || noop,
-          noop,
-          computedWatcherOptions
-        );
-      }
-
-      // component-defined computed properties are already defined on the
-      // component prototype. We only need to define computed properties defined
-      // at instantiation here.
-      if (!(key in vm)) {
-        defineComputed(vm, key, userDef);
-      } else {
-        if (key in vm.$data) {
-          warn(("The computed property \"" + key + "\" is already defined in data."), vm);
-        } else if (vm.$options.props && key in vm.$options.props) {
-          warn(("The computed property \"" + key + "\" is already defined as a prop."), vm);
-        }
-      }
-    }
-  }
-
-  function defineComputed (
-    target,
-    key,
-    userDef
-  ) {
-    var shouldCache = !isServerRendering();
-    if (typeof userDef === 'function') {
-      sharedPropertyDefinition.get = shouldCache
-        ? createComputedGetter(key)
-        : createGetterInvoker(userDef);
-      sharedPropertyDefinition.set = noop;
-    } else {
-      sharedPropertyDefinition.get = userDef.get
-        ? shouldCache && userDef.cache !== false
-          ? createComputedGetter(key)
-          : createGetterInvoker(userDef.get)
-        : noop;
-      sharedPropertyDefinition.set = userDef.set || noop;
-    }
-    if (sharedPropertyDefinition.set === noop) {
-      sharedPropertyDefinition.set = function () {
-        warn(
-          ("Computed property \"" + key + "\" was assigned to but it has no setter."),
-          this
-        );
-      };
-    }
-    Object.defineProperty(target, key, sharedPropertyDefinition);
-  }
-
-  function createComputedGetter (key) {
-    return function computedGetter () {
-      var watcher = this._computedWatchers && this._computedWatchers[key];
-      if (watcher) {
-        if (watcher.dirty) {
-          watcher.evaluate();
-        }
-        if (Dep.target) {
-          watcher.depend();
-        }
-        return watcher.value
-      }
-    }
-  }
-
-  function createGetterInvoker(fn) {
-    return function computedGetter () {
-      return fn.call(this, this)
-    }
-  }
-
-  function initMethods (vm, methods) {
-    var props = vm.$options.props;
-    for (var key in methods) {
-      {
-        if (typeof methods[key] !== 'function') {
-          warn(
-            "Method \"" + key + "\" has type \"" + (typeof methods[key]) + "\" in the component definition. " +
-            "Did you reference the function correctly?",
-            vm
-          );
-        }
-        if (props && hasOwn(props, key)) {
-          warn(
-            ("Method \"" + key + "\" has already been defined as a prop."),
-            vm
-          );
-        }
-        if ((key in vm) && isReserved(key)) {
-          warn(
-            "Method \"" + key + "\" conflicts with an existing Vue instance method. " +
-            "Avoid defining component methods that start with _ or $."
-          );
-        }
-      }
-      vm[key] = typeof methods[key] !== 'function' ? noop : bind(methods[key], vm);
-    }
-  }
-
-  function initWatch (vm, watch) {
-    for (var key in watch) {
-      var handler = watch[key];
-      if (Array.isArray(handler)) {
-        for (var i = 0; i < handler.length; i++) {
-          createWatcher(vm, key, handler[i]);
-        }
-      } else {
-        createWatcher(vm, key, handler);
-      }
-    }
-  }
-
-  function createWatcher (
-    vm,
-    expOrFn,
-    handler,
-    options
-  ) {
-    if (isPlainObject(handler)) {
-      options = handler;
-      handler = handler.handler;
-    }
-    if (typeof handler === 'string') {
-      handler = vm[handler];
-    }
-    return vm.$watch(expOrFn, handler, options)
-  }
-
-  function stateMixin (Vue) {
-    // flow somehow has problems with directly declared definition object
-    // when using Object.defineProperty, so we have to procedurally build up
-    // the object here.
-    var dataDef = {};
-    dataDef.get = function () { return this._data };
-    var propsDef = {};
-    propsDef.get = function () { return this._props };
-    {
-      dataDef.set = function () {
-        warn(
-          'Avoid replacing instance root $data. ' +
-          'Use nested data properties instead.',
-          this
-        );
-      };
-      propsDef.set = function () {
-        warn("$props is readonly.", this);
-      };
-    }
-    Object.defineProperty(Vue.prototype, '$data', dataDef);
-    Object.defineProperty(Vue.prototype, '$props', propsDef);
-
-    Vue.prototype.$set = set;
-    Vue.prototype.$delete = del;
-
-    Vue.prototype.$watch = function (
-      expOrFn,
-      cb,
-      options
-    ) {
-      var vm = this;
-      if (isPlainObject(cb)) {
-        return createWatcher(vm, expOrFn, cb, options)
-      }
-      options = options || {};
-      options.user = true;
-      var watcher = new Watcher(vm, expOrFn, cb, options);
-      if (options.immediate) {
-        try {
-          cb.call(vm, watcher.value);
-        } catch (error) {
-          handleError(error, vm, ("callback for immediate watcher \"" + (watcher.expression) + "\""));
-        }
-      }
-      return function unwatchFn () {
-        watcher.teardown();
-      }
-    };
-  }
-
-  /*  */
-
-  var uid$3 = 0;
-
-  function initMixin (Vue) {
-    Vue.prototype._init = function (options) {
-      var vm = this;
-      // a uid
-      vm._uid = uid$3++;
-
-      var startTag, endTag;
-      /* istanbul ignore if */
-      if (config.performance && mark) {
-        startTag = "vue-perf-start:" + (vm._uid);
-        endTag = "vue-perf-end:" + (vm._uid);
-        mark(startTag);
-      }
-
-      // a flag to avoid this being observed
-      vm._isVue = true;
-      // merge options
-      if (options && options._isComponent) {
-        // optimize internal component instantiation
-        // since dynamic options merging is pretty slow, and none of the
-        // internal component options needs special treatment.
-        initInternalComponent(vm, options);
-      } else {
-        vm.$options = mergeOptions(
-          resolveConstructorOptions(vm.constructor),
-          options || {},
-          vm
-        );
-      }
-      /* istanbul ignore else */
-      {
-        initProxy(vm);
-      }
-      // expose real self
-      vm._self = vm;
-      initLifecycle(vm);
-      initEvents(vm);
-      initRender(vm);
-      callHook(vm, 'beforeCreate');
-      initInjections(vm); // resolve injections before data/props
-      initState(vm);
-      initProvide(vm); // resolve provide after data/props
-      callHook(vm, 'created');
-
-      /* istanbul ignore if */
-      if (config.performance && mark) {
-        vm._name = formatComponentName(vm, false);
-        mark(endTag);
-        measure(("vue " + (vm._name) + " init"), startTag, endTag);
-      }
-
-      if (vm.$options.el) {
-        vm.$mount(vm.$options.el);
-      }
-    };
-  }
-
-  function initInternalComponent (vm, options) {
-    var opts = vm.$options = Object.create(vm.constructor.options);
-    // doing this because it's faster than dynamic enumeration.
-    var parentVnode = options._parentVnode;
-    opts.parent = options.parent;
-    opts._parentVnode = parentVnode;
-
-    var vnodeComponentOptions = parentVnode.componentOptions;
-    opts.propsData = vnodeComponentOptions.propsData;
-    opts._parentListeners = vnodeComponentOptions.listeners;
-    opts._renderChildren = vnodeComponentOptions.children;
-    opts._componentTag = vnodeComponentOptions.tag;
-
-    if (options.render) {
-      opts.render = options.render;
-      opts.staticRenderFns = options.staticRenderFns;
-    }
-  }
-
-  function resolveConstructorOptions (Ctor) {
-    var options = Ctor.options;
-    if (Ctor.super) {
-      var superOptions = resolveConstructorOptions(Ctor.super);
-      var cachedSuperOptions = Ctor.superOptions;
-      if (superOptions !== cachedSuperOptions) {
-        // super option changed,
-        // need to resolve new options.
-        Ctor.superOptions = superOptions;
-        // check if there are any late-modified/attached options (#4976)
-        var modifiedOptions = resolveModifiedOptions(Ctor);
-        // update base extend options
-        if (modifiedOptions) {
-          extend(Ctor.extendOptions, modifiedOptions);
-        }
-        options = Ctor.options = mergeOptions(superOptions, Ctor.extendOptions);
-        if (options.name) {
-          options.components[options.name] = Ctor;
-        }
-      }
-    }
-    return options
-  }
-
-  function resolveModifiedOptions (Ctor) {
-    var modified;
-    var latest = Ctor.options;
-    var sealed = Ctor.sealedOptions;
-    for (var key in latest) {
-      if (latest[key] !== sealed[key]) {
-        if (!modified) { modified = {}; }
-        modified[key] = latest[key];
-      }
-    }
-    return modified
-  }
-
-  function Vue (options) {
-    if (!(this instanceof Vue)
-    ) {
-      warn('Vue is a constructor and should be called with the `new` keyword');
-    }
-    this._init(options);
-  }
-
-  initMixin(Vue);
-  stateMixin(Vue);
-  eventsMixin(Vue);
-  lifecycleMixin(Vue);
-  renderMixin(Vue);
-
-  /*  */
-
-  function initUse (Vue) {
-    Vue.use = function (plugin) {
-      var installedPlugins = (this._installedPlugins || (this._installedPlugins = []));
-      if (installedPlugins.indexOf(plugin) > -1) {
-        return this
-      }
-
-      // additional parameters
-      var args = toArray(arguments, 1);
-      args.unshift(this);
-      if (typeof plugin.install === 'function') {
-        plugin.install.apply(plugin, args);
-      } else if (typeof plugin === 'function') {
-        plugin.apply(null, args);
-      }
-      installedPlugins.push(plugin);
-      return this
-    };
-  }
-
-  /*  */
-
-  function initMixin$1 (Vue) {
-    Vue.mixin = function (mixin) {
-      this.options = mergeOptions(this.options, mixin);
-      return this
-    };
-  }
-
-  /*  */
-
-  function initExtend (Vue) {
-    /**
-     * Each instance constructor, including Vue, has a unique
-     * cid. This enables us to create wrapped "child
-     * constructors" for prototypal inheritance and cache them.
-     */
-    Vue.cid = 0;
-    var cid = 1;
-
-    /**
-     * Class inheritance
-     */
-    Vue.extend = function (extendOptions) {
-      extendOptions = extendOptions || {};
-      var Super = this;
-      var SuperId = Super.cid;
-      var cachedCtors = extendOptions._Ctor || (extendOptions._Ctor = {});
-      if (cachedCtors[SuperId]) {
-        return cachedCtors[SuperId]
-      }
-
-      var name = extendOptions.name || Super.options.name;
-      if (name) {
-        validateComponentName(name);
-      }
-
-      var Sub = function VueComponent (options) {
-        this._init(options);
-      };
-      Sub.prototype = Object.create(Super.prototype);
-      Sub.prototype.constructor = Sub;
-      Sub.cid = cid++;
-      Sub.options = mergeOptions(
-        Super.options,
-        extendOptions
-      );
-      Sub['super'] = Super;
-
-      // For props and computed properties, we define the proxy getters on
-      // the Vue instances at extension time, on the extended prototype. This
-      // avoids Object.defineProperty calls for each instance created.
-      if (Sub.options.props) {
-        initProps$1(Sub);
-      }
-      if (Sub.options.computed) {
-        initComputed$1(Sub);
-      }
-
-      // allow further extension/mixin/plugin usage
-      Sub.extend = Super.extend;
-      Sub.mixin = Super.mixin;
-      Sub.use = Super.use;
-
-      // create asset registers, so extended classes
-      // can have their private assets too.
-      ASSET_TYPES.forEach(function (type) {
-        Sub[type] = Super[type];
-      });
-      // enable recursive self-lookup
-      if (name) {
-        Sub.options.components[name] = Sub;
-      }
-
-      // keep a reference to the super options at extension time.
-      // later at instantiation we can check if Super's options have
-      // been updated.
-      Sub.superOptions = Super.options;
-      Sub.extendOptions = extendOptions;
-      Sub.sealedOptions = extend({}, Sub.options);
-
-      // cache constructor
-      cachedCtors[SuperId] = Sub;
-      return Sub
-    };
-  }
-
-  function initProps$1 (Comp) {
-    var props = Comp.options.props;
-    for (var key in props) {
-      proxy(Comp.prototype, "_props", key);
-    }
-  }
-
-  function initComputed$1 (Comp) {
-    var computed = Comp.options.computed;
-    for (var key in computed) {
-      defineComputed(Comp.prototype, key, computed[key]);
-    }
-  }
-
-  /*  */
-
-  function initAssetRegisters (Vue) {
-    /**
-     * Create asset registration methods.
-     */
-    ASSET_TYPES.forEach(function (type) {
-      Vue[type] = function (
-        id,
-        definition
-      ) {
-        if (!definition) {
-          return this.options[type + 's'][id]
-        } else {
-          /* istanbul ignore if */
-          if (type === 'component') {
-            validateComponentName(id);
-          }
-          if (type === 'component' && isPlainObject(definition)) {
-            definition.name = definition.name || id;
-            definition = this.options._base.extend(definition);
-          }
-          if (type === 'directive' && typeof definition === 'function') {
-            definition = { bind: definition, update: definition };
-          }
-          this.options[type + 's'][id] = definition;
-          return definition
-        }
-      };
-    });
-  }
-
-  /*  */
-
-
-
-  function getComponentName (opts) {
-    return opts && (opts.Ctor.options.name || opts.tag)
-  }
-
-  function matches (pattern, name) {
-    if (Array.isArray(pattern)) {
-      return pattern.indexOf(name) > -1
-    } else if (typeof pattern === 'string') {
-      return pattern.split(',').indexOf(name) > -1
-    } else if (isRegExp(pattern)) {
-      return pattern.test(name)
-    }
-    /* istanbul ignore next */
-    return false
-  }
-
-  function pruneCache (keepAliveInstance, filter) {
-    var cache = keepAliveInstance.cache;
-    var keys = keepAliveInstance.keys;
-    var _vnode = keepAliveInstance._vnode;
-    for (var key in cache) {
-      var cachedNode = cache[key];
-      if (cachedNode) {
-        var name = getComponentName(cachedNode.componentOptions);
-        if (name && !filter(name)) {
-          pruneCacheEntry(cache, key, keys, _vnode);
-        }
-      }
-    }
-  }
-
-  function pruneCacheEntry (
-    cache,
-    key,
-    keys,
-    current
-  ) {
-    var cached$$1 = cache[key];
-    if (cached$$1 && (!current || cached$$1.tag !== current.tag)) {
-      cached$$1.componentInstance.$destroy();
-    }
-    cache[key] = null;
-    remove(keys, key);
-  }
-
-  var patternTypes = [String, RegExp, Array];
-
-  var KeepAlive = {
-    name: 'keep-alive',
-    abstract: true,
-
-    props: {
-      include: patternTypes,
-      exclude: patternTypes,
-      max: [String, Number]
-    },
-
-    created: function created () {
-      this.cache = Object.create(null);
-      this.keys = [];
-    },
-
-    destroyed: function destroyed () {
-      for (var key in this.cache) {
-        pruneCacheEntry(this.cache, key, this.keys);
-      }
-    },
-
-    mounted: function mounted () {
-      var this$1 = this;
-
-      this.$watch('include', function (val) {
-        pruneCache(this$1, function (name) { return matches(val, name); });
-      });
-      this.$watch('exclude', function (val) {
-        pruneCache(this$1, function (name) { return !matches(val, name); });
-      });
-    },
-
-    render: function render () {
-      var slot = this.$slots.default;
-      var vnode = getFirstComponentChild(slot);
-      var componentOptions = vnode && vnode.componentOptions;
-      if (componentOptions) {
-        // check pattern
-        var name = getComponentName(componentOptions);
-        var ref = this;
-        var include = ref.include;
-        var exclude = ref.exclude;
-        if (
-          // not included
-          (include && (!name || !matches(include, name))) ||
-          // excluded
-          (exclude && name && matches(exclude, name))
-        ) {
-          return vnode
-        }
-
-        var ref$1 = this;
-        var cache = ref$1.cache;
-        var keys = ref$1.keys;
-        var key = vnode.key == null
-          // same constructor may get registered as different local components
-          // so cid alone is not enough (#3269)
-          ? componentOptions.Ctor.cid + (componentOptions.tag ? ("::" + (componentOptions.tag)) : '')
-          : vnode.key;
-        if (cache[key]) {
-          vnode.componentInstance = cache[key].componentInstance;
-          // make current key freshest
-          remove(keys, key);
-          keys.push(key);
-        } else {
-          cache[key] = vnode;
-          keys.push(key);
-          // prune oldest entry
-          if (this.max && keys.length > parseInt(this.max)) {
-            pruneCacheEntry(cache, keys[0], keys, this._vnode);
-          }
-        }
-
-        vnode.data.keepAlive = true;
-      }
-      return vnode || (slot && slot[0])
-    }
-  };
-
-  var builtInComponents = {
-    KeepAlive: KeepAlive
-  };
-
-  /*  */
-
-  function initGlobalAPI (Vue) {
-    // config
-    var configDef = {};
-    configDef.get = function () { return config; };
-    {
-      configDef.set = function () {
-        warn(
-          'Do not replace the Vue.config object, set individual fields instead.'
-        );
-      };
-    }
-    Object.defineProperty(Vue, 'config', configDef);
-
-    // exposed util methods.
-    // NOTE: these are not considered part of the public API - avoid relying on
-    // them unless you are aware of the risk.
-    Vue.util = {
-      warn: warn,
-      extend: extend,
-      mergeOptions: mergeOptions,
-      defineReactive: defineReactive$$1
-    };
-
-    Vue.set = set;
-    Vue.delete = del;
-    Vue.nextTick = nextTick;
-
-    // 2.6 explicit observable API
-    Vue.observable = function (obj) {
-      observe(obj);
-      return obj
-    };
-
-    Vue.options = Object.create(null);
-    ASSET_TYPES.forEach(function (type) {
-      Vue.options[type + 's'] = Object.create(null);
-    });
-
-    // this is used to identify the "base" constructor to extend all plain-object
-    // components with in Weex's multi-instance scenarios.
-    Vue.options._base = Vue;
-
-    extend(Vue.options.components, builtInComponents);
-
-    initUse(Vue);
-    initMixin$1(Vue);
-    initExtend(Vue);
-    initAssetRegisters(Vue);
-  }
-
-  initGlobalAPI(Vue);
-
-  Object.defineProperty(Vue.prototype, '$isServer', {
-    get: isServerRendering
-  });
-
-  Object.defineProperty(Vue.prototype, '$ssrContext', {
-    get: function get () {
-      /* istanbul ignore next */
-      return this.$vnode && this.$vnode.ssrContext
-    }
-  });
-
-  // expose FunctionalRenderContext for ssr runtime helper installation
-  Object.defineProperty(Vue, 'FunctionalRenderContext', {
-    value: FunctionalRenderContext
-  });
-
-  Vue.version = '2.6.10';
-
-  /*  */
-
-  // these are reserved for web because they are directly compiled away
-  // during template compilation
-  var isReservedAttr = makeMap('style,class');
-
-  // attributes that should be using props for binding
-  var acceptValue = makeMap('input,textarea,option,select,progress');
-  var mustUseProp = function (tag, type, attr) {
-    return (
-      (attr === 'value' && acceptValue(tag)) && type !== 'button' ||
-      (attr === 'selected' && tag === 'option') ||
-      (attr === 'checked' && tag === 'input') ||
-      (attr === 'muted' && tag === 'video')
-    )
-  };
-
-  var isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck');
-
-  var isValidContentEditableValue = makeMap('events,caret,typing,plaintext-only');
-
-  var convertEnumeratedValue = function (key, value) {
-    return isFalsyAttrValue(value) || value === 'false'
-      ? 'false'
-      // allow arbitrary string value for contenteditable
-      : key === 'contenteditable' && isValidContentEditableValue(value)
-        ? value
-        : 'true'
-  };
-
-  var isBooleanAttr = makeMap(
-    'allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' +
-    'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' +
-    'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' +
-    'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' +
-    'required,reversed,scoped,seamless,selected,sortable,translate,' +
-    'truespeed,typemustmatch,visible'
-  );
-
-  var xlinkNS = 'http://www.w3.org/1999/xlink';
-
-  var isXlink = function (name) {
-    return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink'
-  };
-
-  var getXlinkProp = function (name) {
-    return isXlink(name) ? name.slice(6, name.length) : ''
-  };
-
-  var isFalsyAttrValue = function (val) {
-    return val == null || val === false
-  };
-
-  /*  */
-
-  function genClassForVnode (vnode) {
-    var data = vnode.data;
-    var parentNode = vnode;
-    var childNode = vnode;
-    while (isDef(childNode.componentInstance)) {
-      childNode = childNode.componentInstance._vnode;
-      if (childNode && childNode.data) {
-        data = mergeClassData(childNode.data, data);
-      }
-    }
-    while (isDef(parentNode = parentNode.parent)) {
-      if (parentNode && parentNode.data) {
-        data = mergeClassData(data, parentNode.data);
-      }
-    }
-    return renderClass(data.staticClass, data.class)
-  }
-
-  function mergeClassData (child, parent) {
-    return {
-      staticClass: concat(child.staticClass, parent.staticClass),
-      class: isDef(child.class)
-        ? [child.class, parent.class]
-        : parent.class
-    }
-  }
-
-  function renderClass (
-    staticClass,
-    dynamicClass
-  ) {
-    if (isDef(staticClass) || isDef(dynamicClass)) {
-      return concat(staticClass, stringifyClass(dynamicClass))
-    }
-    /* istanbul ignore next */
-    return ''
-  }
-
-  function concat (a, b) {
-    return a ? b ? (a + ' ' + b) : a : (b || '')
-  }
-
-  function stringifyClass (value) {
-    if (Array.isArray(value)) {
-      return stringifyArray(value)
-    }
-    if (isObject(value)) {
-      return stringifyObject(value)
-    }
-    if (typeof value === 'string') {
-      return value
-    }
-    /* istanbul ignore next */
-    return ''
-  }
-
-  function stringifyArray (value) {
-    var res = '';
-    var stringified;
-    for (var i = 0, l = value.length; i < l; i++) {
-      if (isDef(stringified = stringifyClass(value[i])) && stringified !== '') {
-        if (res) { res += ' '; }
-        res += stringified;
-      }
-    }
-    return res
-  }
-
-  function stringifyObject (value) {
-    var res = '';
-    for (var key in value) {
-      if (value[key]) {
-        if (res) { res += ' '; }
-        res += key;
-      }
-    }
-    return res
-  }
-
-  /*  */
-
-  var namespaceMap = {
-    svg: 'http://www.w3.org/2000/svg',
-    math: 'http://www.w3.org/1998/Math/MathML'
-  };
-
-  var isHTMLTag = makeMap(
-    'html,body,base,head,link,meta,style,title,' +
-    'address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,' +
-    'div,dd,dl,dt,figcaption,figure,picture,hr,img,li,main,ol,p,pre,ul,' +
-    'a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,' +
-    's,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video,' +
-    'embed,object,param,source,canvas,script,noscript,del,ins,' +
-    'caption,col,colgroup,table,thead,tbody,td,th,tr,' +
-    'button,datalist,fieldset,form,input,label,legend,meter,optgroup,option,' +
-    'output,progress,select,textarea,' +
-    'details,dialog,menu,menuitem,summary,' +
-    'content,element,shadow,template,blockquote,iframe,tfoot'
-  );
-
-  // this map is intentionally selective, only covering SVG elements that may
-  // contain child elements.
-  var isSVG = makeMap(
-    'svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,font-face,' +
-    'foreignObject,g,glyph,image,line,marker,mask,missing-glyph,path,pattern,' +
-    'polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view',
-    true
-  );
-
-  var isPreTag = function (tag) { return tag === 'pre'; };
-
-  var isReservedTag = function (tag) {
-    return isHTMLTag(tag) || isSVG(tag)
-  };
-
-  function getTagNamespace (tag) {
-    if (isSVG(tag)) {
-      return 'svg'
-    }
-    // basic support for MathML
-    // note it doesn't support other MathML elements being component roots
-    if (tag === 'math') {
-      return 'math'
-    }
-  }
-
-  var unknownElementCache = Object.create(null);
-  function isUnknownElement (tag) {
-    /* istanbul ignore if */
-    if (!inBrowser) {
-      return true
-    }
-    if (isReservedTag(tag)) {
-      return false
-    }
-    tag = tag.toLowerCase();
-    /* istanbul ignore if */
-    if (unknownElementCache[tag] != null) {
-      return unknownElementCache[tag]
-    }
-    var el = document.createElement(tag);
-    if (tag.indexOf('-') > -1) {
-      // http://stackoverflow.com/a/28210364/1070244
-      return (unknownElementCache[tag] = (
-        el.constructor === window.HTMLUnknownElement ||
-        el.constructor === window.HTMLElement
-      ))
-    } else {
-      return (unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString()))
-    }
-  }
-
-  var isTextInputType = makeMap('text,number,password,search,email,tel,url');
-
-  /*  */
-
-  /**
-   * Query an element selector if it's not an element already.
-   */
-  function query (el) {
-    if (typeof el === 'string') {
-      var selected = document.querySelector(el);
-      if (!selected) {
-        warn(
-          'Cannot find element: ' + el
-        );
-        return document.createElement('div')
-      }
-      return selected
-    } else {
-      return el
-    }
-  }
-
-  /*  */
-
-  function createElement$1 (tagName, vnode) {
-    var elm = document.createElement(tagName);
-    if (tagName !== 'select') {
-      return elm
-    }
-    // false or null will remove the attribute but undefined will not
-    if (vnode.data && vnode.data.attrs && vnode.data.attrs.multiple !== undefined) {
-      elm.setAttribute('multiple', 'multiple');
-    }
-    return elm
-  }
-
-  function createElementNS (namespace, tagName) {
-    return document.createElementNS(namespaceMap[namespace], tagName)
-  }
-
-  function createTextNode (text) {
-    return document.createTextNode(text)
-  }
-
-  function createComment (text) {
-    return document.createComment(text)
-  }
-
-  function insertBefore (parentNode, newNode, referenceNode) {
-    parentNode.insertBefore(newNode, referenceNode);
-  }
-
-  function removeChild (node, child) {
-    node.removeChild(child);
-  }
-
-  function appendChild (node, child) {
-    node.appendChild(child);
-  }
-
-  function parentNode (node) {
-    return node.parentNode
-  }
-
-  function nextSibling (node) {
-    return node.nextSibling
-  }
-
-  function tagName (node) {
-    return node.tagName
-  }
-
-  function setTextContent (node, text) {
-    node.textContent = text;
-  }
-
-  function setStyleScope (node, scopeId) {
-    node.setAttribute(scopeId, '');
-  }
-
-  var nodeOps = /*#__PURE__*/Object.freeze({
-    createElement: createElement$1,
-    createElementNS: createElementNS,
-    createTextNode: createTextNode,
-    createComment: createComment,
-    insertBefore: insertBefore,
-    removeChild: removeChild,
-    appendChild: appendChild,
-    parentNode: parentNode,
-    nextSibling: nextSibling,
-    tagName: tagName,
-    setTextContent: setTextContent,
-    setStyleScope: setStyleScope
-  });
-
-  /*  */
-
-  var ref = {
-    create: function create (_, vnode) {
-      registerRef(vnode);
-    },
-    update: function update (oldVnode, vnode) {
-      if (oldVnode.data.ref !== vnode.data.ref) {
-        registerRef(oldVnode, true);
-        registerRef(vnode);
-      }
-    },
-    destroy: function destroy (vnode) {
-      registerRef(vnode, true);
-    }
-  };
-
-  function registerRef (vnode, isRemoval) {
-    var key = vnode.data.ref;
-    if (!isDef(key)) { return }
-
-    var vm = vnode.context;
-    var ref = vnode.componentInstance || vnode.elm;
-    var refs = vm.$refs;
-    if (isRemoval) {
-      if (Array.isArray(refs[key])) {
-        remove(refs[key], ref);
-      } else if (refs[key] === ref) {
-        refs[key] = undefined;
-      }
-    } else {
-      if (vnode.data.refInFor) {
-        if (!Array.isArray(refs[key])) {
-          refs[key] = [ref];
-        } else if (refs[key].indexOf(ref) < 0) {
-          // $flow-disable-line
-          refs[key].push(ref);
-        }
-      } else {
-        refs[key] = ref;
-      }
-    }
-  }
-
-  /**
-   * Virtual DOM patching algorithm based on Snabbdom by
-   * Simon Friis Vindum (@paldepind)
-   * Licensed under the MIT License
-   * https://github.com/paldepind/snabbdom/blob/master/LICENSE
-   *
-   * modified by Evan You (@yyx990803)
-   *
-   * Not type-checking this because this file is perf-critical and the cost
-   * of making flow understand it is not worth it.
-   */
-
-  var emptyNode = new VNode('', {}, []);
-
-  var hooks = ['create', 'activate', 'update', 'remove', 'destroy'];
-
-  function sameVnode (a, b) {
-    return (
-      a.key === b.key && (
-        (
-          a.tag === b.tag &&
-          a.isComment === b.isComment &&
-          isDef(a.data) === isDef(b.data) &&
-          sameInputType(a, b)
-        ) || (
-          isTrue(a.isAsyncPlaceholder) &&
-          a.asyncFactory === b.asyncFactory &&
-          isUndef(b.asyncFactory.error)
-        )
-      )
-    )
-  }
-
-  function sameInputType (a, b) {
-    if (a.tag !== 'input') { return true }
-    var i;
-    var typeA = isDef(i = a.data) && isDef(i = i.attrs) && i.type;
-    var typeB = isDef(i = b.data) && isDef(i = i.attrs) && i.type;
-    return typeA === typeB || isTextInputType(typeA) && isTextInputType(typeB)
-  }
-
-  function createKeyToOldIdx (children, beginIdx, endIdx) {
-    var i, key;
-    var map = {};
-    for (i = beginIdx; i <= endIdx; ++i) {
-      key = children[i].key;
-      if (isDef(key)) { map[key] = i; }
-    }
-    return map
-  }
-
-  function createPatchFunction (backend) {
-    var i, j;
-    var cbs = {};
-
-    var modules = backend.modules;
-    var nodeOps = backend.nodeOps;
-
-    for (i = 0; i < hooks.length; ++i) {
-      cbs[hooks[i]] = [];
-      for (j = 0; j < modules.length; ++j) {
-        if (isDef(modules[j][hooks[i]])) {
-          cbs[hooks[i]].push(modules[j][hooks[i]]);
-        }
-      }
-    }
-
-    function emptyNodeAt (elm) {
-      return new VNode(nodeOps.tagName(elm).toLowerCase(), {}, [], undefined, elm)
-    }
-
-    function createRmCb (childElm, listeners) {
-      function remove$$1 () {
-        if (--remove$$1.listeners === 0) {
-          removeNode(childElm);
-        }
-      }
-      remove$$1.listeners = listeners;
-      return remove$$1
-    }
-
-    function removeNode (el) {
-      var parent = nodeOps.parentNode(el);
-      // element may have already been removed due to v-html / v-text
-      if (isDef(parent)) {
-        nodeOps.removeChild(parent, el);
-      }
-    }
-
-    function isUnknownElement$$1 (vnode, inVPre) {
-      return (
-        !inVPre &&
-        !vnode.ns &&
-        !(
-          config.ignoredElements.length &&
-          config.ignoredElements.some(function (ignore) {
-            return isRegExp(ignore)
-              ? ignore.test(vnode.tag)
-              : ignore === vnode.tag
-          })
-        ) &&
-        config.isUnknownElement(vnode.tag)
-      )
-    }
-
-    var creatingElmInVPre = 0;
-
-    function createElm (
-      vnode,
-      insertedVnodeQueue,
-      parentElm,
-      refElm,
-      nested,
-      ownerArray,
-      index
-    ) {
-      if (isDef(vnode.elm) && isDef(ownerArray)) {
-        // This vnode was used in a previous render!
-        // now it's used as a new node, overwriting its elm would cause
-        // potential patch errors down the road when it's used as an insertion
-        // reference node. Instead, we clone the node on-demand before creating
-        // associated DOM element for it.
-        vnode = ownerArray[index] = cloneVNode(vnode);
-      }
-
-      vnode.isRootInsert = !nested; // for transition enter check
-      if (createComponent(vnode, insertedVnodeQueue, parentElm, refElm)) {
-        return
-      }
-
-      var data = vnode.data;
-      var children = vnode.children;
-      var tag = vnode.tag;
-      if (isDef(tag)) {
-        {
-          if (data && data.pre) {
-            creatingElmInVPre++;
-          }
-          if (isUnknownElement$$1(vnode, creatingElmInVPre)) {
-            warn(
-              'Unknown custom element: <' + tag + '> - did you ' +
-              'register the component correctly? For recursive components, ' +
-              'make sure to provide the "name" option.',
-              vnode.context
-            );
-          }
-        }
-
-        vnode.elm = vnode.ns
-          ? nodeOps.createElementNS(vnode.ns, tag)
-          : nodeOps.createElement(tag, vnode);
-        setScope(vnode);
-
-        /* istanbul ignore if */
-        {
-          createChildren(vnode, children, insertedVnodeQueue);
-          if (isDef(data)) {
-            invokeCreateHooks(vnode, insertedVnodeQueue);
-          }
-          insert(parentElm, vnode.elm, refElm);
-        }
-
-        if (data && data.pre) {
-          creatingElmInVPre--;
-        }
-      } else if (isTrue(vnode.isComment)) {
-        vnode.elm = nodeOps.createComment(vnode.text);
-        insert(parentElm, vnode.elm, refElm);
-      } else {
-        vnode.elm = nodeOps.createTextNode(vnode.text);
-        insert(parentElm, vnode.elm, refElm);
-      }
-    }
-
-    function createComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
-      var i = vnode.data;
-      if (isDef(i)) {
-        var isReactivated = isDef(vnode.componentInstance) && i.keepAlive;
-        if (isDef(i = i.hook) && isDef(i = i.init)) {
-          i(vnode, false /* hydrating */);
-        }
-        // after calling the init hook, if the vnode is a child component
-        // it should've created a child instance and mounted it. the child
-        // component also has set the placeholder vnode's elm.
-        // in that case we can just return the element and be done.
-        if (isDef(vnode.componentInstance)) {
-          initComponent(vnode, insertedVnodeQueue);
-          insert(parentElm, vnode.elm, refElm);
-          if (isTrue(isReactivated)) {
-            reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm);
-          }
-          return true
-        }
-      }
-    }
-
-    function initComponent (vnode, insertedVnodeQueue) {
-      if (isDef(vnode.data.pendingInsert)) {
-        insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert);
-        vnode.data.pendingInsert = null;
-      }
-      vnode.elm = vnode.componentInstance.$el;
-      if (isPatchable(vnode)) {
-        invokeCreateHooks(vnode, insertedVnodeQueue);
-        setScope(vnode);
-      } else {
-        // empty component root.
-        // skip all element-related modules except for ref (#3455)
-        registerRef(vnode);
-        // make sure to invoke the insert hook
-        insertedVnodeQueue.push(vnode);
-      }
-    }
-
-    function reactivateComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
-      var i;
-      // hack for #4339: a reactivated component with inner transition
-      // does not trigger because the inner node's created hooks are not called
-      // again. It's not ideal to involve module-specific logic in here but
-      // there doesn't seem to be a better way to do it.
-      var innerNode = vnode;
-      while (innerNode.componentInstance) {
-        innerNode = innerNode.componentInstance._vnode;
-        if (isDef(i = innerNode.data) && isDef(i = i.transition)) {
-          for (i = 0; i < cbs.activate.length; ++i) {
-            cbs.activate[i](emptyNode, innerNode);
-          }
-          insertedVnodeQueue.push(innerNode);
-          break
-        }
-      }
-      // unlike a newly created component,
-      // a reactivated keep-alive component doesn't insert itself
-      insert(parentElm, vnode.elm, refElm);
-    }
-
-    function insert (parent, elm, ref$$1) {
-      if (isDef(parent)) {
-        if (isDef(ref$$1)) {
-          if (nodeOps.parentNode(ref$$1) === parent) {
-            nodeOps.insertBefore(parent, elm, ref$$1);
-          }
-        } else {
-          nodeOps.appendChild(parent, elm);
-        }
-      }
-    }
-
-    function createChildren (vnode, children, insertedVnodeQueue) {
-      if (Array.isArray(children)) {
-        {
-          checkDuplicateKeys(children);
-        }
-        for (var i = 0; i < children.length; ++i) {
-          createElm(children[i], insertedVnodeQueue, vnode.elm, null, true, children, i);
-        }
-      } else if (isPrimitive(vnode.text)) {
-        nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(String(vnode.text)));
-      }
-    }
-
-    function isPatchable (vnode) {
-      while (vnode.componentInstance) {
-        vnode = vnode.componentInstance._vnode;
-      }
-      return isDef(vnode.tag)
-    }
-
-    function invokeCreateHooks (vnode, insertedVnodeQueue) {
-      for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
-        cbs.create[i$1](emptyNode, vnode);
-      }
-      i = vnode.data.hook; // Reuse variable
-      if (isDef(i)) {
-        if (isDef(i.create)) { i.create(emptyNode, vnode); }
-        if (isDef(i.insert)) { insertedVnodeQueue.push(vnode); }
-      }
-    }
-
-    // set scope id attribute for scoped CSS.
-    // this is implemented as a special case to avoid the overhead
-    // of going through the normal attribute patching process.
-    function setScope (vnode) {
-      var i;
-      if (isDef(i = vnode.fnScopeId)) {
-        nodeOps.setStyleScope(vnode.elm, i);
-      } else {
-        var ancestor = vnode;
-        while (ancestor) {
-          if (isDef(i = ancestor.context) && isDef(i = i.$options._scopeId)) {
-            nodeOps.setStyleScope(vnode.elm, i);
-          }
-          ancestor = ancestor.parent;
-        }
-      }
-      // for slot content they should also get the scopeId from the host instance.
-      if (isDef(i = activeInstance) &&
-        i !== vnode.context &&
-        i !== vnode.fnContext &&
-        isDef(i = i.$options._scopeId)
-      ) {
-        nodeOps.setStyleScope(vnode.elm, i);
-      }
-    }
-
-    function addVnodes (parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) {
-      for (; startIdx <= endIdx; ++startIdx) {
-        createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm, false, vnodes, startIdx);
-      }
-    }
-
-    function invokeDestroyHook (vnode) {
-      var i, j;
-      var data = vnode.data;
-      if (isDef(data)) {
-        if (isDef(i = data.hook) && isDef(i = i.destroy)) { i(vnode); }
-        for (i = 0; i < cbs.destroy.length; ++i) { cbs.destroy[i](vnode); }
-      }
-      if (isDef(i = vnode.children)) {
-        for (j = 0; j < vnode.children.length; ++j) {
-          invokeDestroyHook(vnode.children[j]);
-        }
-      }
-    }
-
-    function removeVnodes (parentElm, vnodes, startIdx, endIdx) {
-      for (; startIdx <= endIdx; ++startIdx) {
-        var ch = vnodes[startIdx];
-        if (isDef(ch)) {
-          if (isDef(ch.tag)) {
-            removeAndInvokeRemoveHook(ch);
-            invokeDestroyHook(ch);
-          } else { // Text node
-            removeNode(ch.elm);
-          }
-        }
-      }
-    }
-
-    function removeAndInvokeRemoveHook (vnode, rm) {
-      if (isDef(rm) || isDef(vnode.data)) {
-        var i;
-        var listeners = cbs.remove.length + 1;
-        if (isDef(rm)) {
-          // we have a recursively passed down rm callback
-          // increase the listeners count
-          rm.listeners += listeners;
-        } else {
-          // directly removing
-          rm = createRmCb(vnode.elm, listeners);
-        }
-        // recursively invoke hooks on child component root node
-        if (isDef(i = vnode.componentInstance) && isDef(i = i._vnode) && isDef(i.data)) {
-          removeAndInvokeRemoveHook(i, rm);
-        }
-        for (i = 0; i < cbs.remove.length; ++i) {
-          cbs.remove[i](vnode, rm);
-        }
-        if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) {
-          i(vnode, rm);
-        } else {
-          rm();
-        }
-      } else {
-        removeNode(vnode.elm);
-      }
-    }
-
-    function updateChildren (parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) {
-      var oldStartIdx = 0;
-      var newStartIdx = 0;
-      var oldEndIdx = oldCh.length - 1;
-      var oldStartVnode = oldCh[0];
-      var oldEndVnode = oldCh[oldEndIdx];
-      var newEndIdx = newCh.length - 1;
-      var newStartVnode = newCh[0];
-      var newEndVnode = newCh[newEndIdx];
-      var oldKeyToIdx, idxInOld, vnodeToMove, refElm;
-
-      // removeOnly is a special flag used only by <transition-group>
-      // to ensure removed elements stay in correct relative positions
-      // during leaving transitions
-      var canMove = !removeOnly;
-
-      {
-        checkDuplicateKeys(newCh);
-      }
-
-      while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {
-        if (isUndef(oldStartVnode)) {
-          oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left
-        } else if (isUndef(oldEndVnode)) {
-          oldEndVnode = oldCh[--oldEndIdx];
-        } else if (sameVnode(oldStartVnode, newStartVnode)) {
-          patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
-          oldStartVnode = oldCh[++oldStartIdx];
-          newStartVnode = newCh[++newStartIdx];
-        } else if (sameVnode(oldEndVnode, newEndVnode)) {
-          patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
-          oldEndVnode = oldCh[--oldEndIdx];
-          newEndVnode = newCh[--newEndIdx];
-        } else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right
-          patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
-          canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm));
-          oldStartVnode = oldCh[++oldStartIdx];
-          newEndVnode = newCh[--newEndIdx];
-        } else if (sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left
-          patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
-          canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm);
-          oldEndVnode = oldCh[--oldEndIdx];
-          newStartVnode = newCh[++newStartIdx];
-        } else {
-          if (isUndef(oldKeyToIdx)) { oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx); }
-          idxInOld = isDef(newStartVnode.key)
-            ? oldKeyToIdx[newStartVnode.key]
-            : findIdxInOld(newStartVnode, oldCh, oldStartIdx, oldEndIdx);
-          if (isUndef(idxInOld)) { // New element
-            createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
-          } else {
-            vnodeToMove = oldCh[idxInOld];
-            if (sameVnode(vnodeToMove, newStartVnode)) {
-              patchVnode(vnodeToMove, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
-              oldCh[idxInOld] = undefined;
-              canMove && nodeOps.insertBefore(parentElm, vnodeToMove.elm, oldStartVnode.elm);
-            } else {
-              // same key but different element. treat as new element
-              createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
-            }
-          }
-          newStartVnode = newCh[++newStartIdx];
-        }
-      }
-      if (oldStartIdx > oldEndIdx) {
-        refElm = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
-        addVnodes(parentElm, refElm, newCh, newStartIdx, newEndIdx, insertedVnodeQueue);
-      } else if (newStartIdx > newEndIdx) {
-        removeVnodes(parentElm, oldCh, oldStartIdx, oldEndIdx);
-      }
-    }
-
-    function checkDuplicateKeys (children) {
-      var seenKeys = {};
-      for (var i = 0; i < children.length; i++) {
-        var vnode = children[i];
-        var key = vnode.key;
-        if (isDef(key)) {
-          if (seenKeys[key]) {
-            warn(
-              ("Duplicate keys detected: '" + key + "'. This may cause an update error."),
-              vnode.context
-            );
-          } else {
-            seenKeys[key] = true;
-          }
-        }
-      }
-    }
-
-    function findIdxInOld (node, oldCh, start, end) {
-      for (var i = start; i < end; i++) {
-        var c = oldCh[i];
-        if (isDef(c) && sameVnode(node, c)) { return i }
-      }
-    }
-
-    function patchVnode (
-      oldVnode,
-      vnode,
-      insertedVnodeQueue,
-      ownerArray,
-      index,
-      removeOnly
-    ) {
-      if (oldVnode === vnode) {
-        return
-      }
-
-      if (isDef(vnode.elm) && isDef(ownerArray)) {
-        // clone reused vnode
-        vnode = ownerArray[index] = cloneVNode(vnode);
-      }
-
-      var elm = vnode.elm = oldVnode.elm;
-
-      if (isTrue(oldVnode.isAsyncPlaceholder)) {
-        if (isDef(vnode.asyncFactory.resolved)) {
-          hydrate(oldVnode.elm, vnode, insertedVnodeQueue);
-        } else {
-          vnode.isAsyncPlaceholder = true;
-        }
-        return
-      }
-
-      // reuse element for static trees.
-      // note we only do this if the vnode is cloned -
-      // if the new node is not cloned it means the render functions have been
-      // reset by the hot-reload-api and we need to do a proper re-render.
-      if (isTrue(vnode.isStatic) &&
-        isTrue(oldVnode.isStatic) &&
-        vnode.key === oldVnode.key &&
-        (isTrue(vnode.isCloned) || isTrue(vnode.isOnce))
-      ) {
-        vnode.componentInstance = oldVnode.componentInstance;
-        return
-      }
-
-      var i;
-      var data = vnode.data;
-      if (isDef(data) && isDef(i = data.hook) && isDef(i = i.prepatch)) {
-        i(oldVnode, vnode);
-      }
-
-      var oldCh = oldVnode.children;
-      var ch = vnode.children;
-      if (isDef(data) && isPatchable(vnode)) {
-        for (i = 0; i < cbs.update.length; ++i) { cbs.update[i](oldVnode, vnode); }
-        if (isDef(i = data.hook) && isDef(i = i.update)) { i(oldVnode, vnode); }
-      }
-      if (isUndef(vnode.text)) {
-        if (isDef(oldCh) && isDef(ch)) {
-          if (oldCh !== ch) { updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly); }
-        } else if (isDef(ch)) {
-          {
-            checkDuplicateKeys(ch);
-          }
-          if (isDef(oldVnode.text)) { nodeOps.setTextContent(elm, ''); }
-          addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue);
-        } else if (isDef(oldCh)) {
-          removeVnodes(elm, oldCh, 0, oldCh.length - 1);
-        } else if (isDef(oldVnode.text)) {
-          nodeOps.setTextContent(elm, '');
-        }
-      } else if (oldVnode.text !== vnode.text) {
-        nodeOps.setTextContent(elm, vnode.text);
-      }
-      if (isDef(data)) {
-        if (isDef(i = data.hook) && isDef(i = i.postpatch)) { i(oldVnode, vnode); }
-      }
-    }
-
-    function invokeInsertHook (vnode, queue, initial) {
-      // delay insert hooks for component root nodes, invoke them after the
-      // element is really inserted
-      if (isTrue(initial) && isDef(vnode.parent)) {
-        vnode.parent.data.pendingInsert = queue;
-      } else {
-        for (var i = 0; i < queue.length; ++i) {
-          queue[i].data.hook.insert(queue[i]);
-        }
-      }
-    }
-
-    var hydrationBailed = false;
-    // list of modules that can skip create hook during hydration because they
-    // are already rendered on the client or has no need for initialization
-    // Note: style is excluded because it relies on initial clone for future
-    // deep updates (#7063).
-    var isRenderedModule = makeMap('attrs,class,staticClass,staticStyle,key');
-
-    // Note: this is a browser-only function so we can assume elms are DOM nodes.
-    function hydrate (elm, vnode, insertedVnodeQueue, inVPre) {
-      var i;
-      var tag = vnode.tag;
-      var data = vnode.data;
-      var children = vnode.children;
-      inVPre = inVPre || (data && data.pre);
-      vnode.elm = elm;
-
-      if (isTrue(vnode.isComment) && isDef(vnode.asyncFactory)) {
-        vnode.isAsyncPlaceholder = true;
-        return true
-      }
-      // assert node match
-      {
-        if (!assertNodeMatch(elm, vnode, inVPre)) {
-          return false
-        }
-      }
-      if (isDef(data)) {
-        if (isDef(i = data.hook) && isDef(i = i.init)) { i(vnode, true /* hydrating */); }
-        if (isDef(i = vnode.componentInstance)) {
-          // child component. it should have hydrated its own tree.
-          initComponent(vnode, insertedVnodeQueue);
-          return true
-        }
-      }
-      if (isDef(tag)) {
-        if (isDef(children)) {
-          // empty element, allow client to pick up and populate children
-          if (!elm.hasChildNodes()) {
-            createChildren(vnode, children, insertedVnodeQueue);
-          } else {
-            // v-html and domProps: innerHTML
-            if (isDef(i = data) && isDef(i = i.domProps) && isDef(i = i.innerHTML)) {
-              if (i !== elm.innerHTML) {
-                /* istanbul ignore if */
-                if (typeof console !== 'undefined' &&
-                  !hydrationBailed
-                ) {
-                  hydrationBailed = true;
-                  console.warn('Parent: ', elm);
-                  console.warn('server innerHTML: ', i);
-                  console.warn('client innerHTML: ', elm.innerHTML);
-                }
-                return false
-              }
-            } else {
-              // iterate and compare children lists
-              var childrenMatch = true;
-              var childNode = elm.firstChild;
-              for (var i$1 = 0; i$1 < children.length; i$1++) {
-                if (!childNode || !hydrate(childNode, children[i$1], insertedVnodeQueue, inVPre)) {
-                  childrenMatch = false;
-                  break
-                }
-                childNode = childNode.nextSibling;
-              }
-              // if childNode is not null, it means the actual childNodes list is
-              // longer than the virtual children list.
-              if (!childrenMatch || childNode) {
-                /* istanbul ignore if */
-                if (typeof console !== 'undefined' &&
-                  !hydrationBailed
-                ) {
-                  hydrationBailed = true;
-                  console.warn('Parent: ', elm);
-                  console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children);
-                }
-                return false
-              }
-            }
-          }
-        }
-        if (isDef(data)) {
-          var fullInvoke = false;
-          for (var key in data) {
-            if (!isRenderedModule(key)) {
-              fullInvoke = true;
-              invokeCreateHooks(vnode, insertedVnodeQueue);
-              break
-            }
-          }
-          if (!fullInvoke && data['class']) {
-            // ensure collecting deps for deep class bindings for future updates
-            traverse(data['class']);
-          }
-        }
-      } else if (elm.data !== vnode.text) {
-        elm.data = vnode.text;
-      }
-      return true
-    }
-
-    function assertNodeMatch (node, vnode, inVPre) {
-      if (isDef(vnode.tag)) {
-        return vnode.tag.indexOf('vue-component') === 0 || (
-          !isUnknownElement$$1(vnode, inVPre) &&
-          vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase())
-        )
-      } else {
-        return node.nodeType === (vnode.isComment ? 8 : 3)
-      }
-    }
-
-    return function patch (oldVnode, vnode, hydrating, removeOnly) {
-      if (isUndef(vnode)) {
-        if (isDef(oldVnode)) { invokeDestroyHook(oldVnode); }
-        return
-      }
-
-      var isInitialPatch = false;
-      var insertedVnodeQueue = [];
-
-      if (isUndef(oldVnode)) {
-        // empty mount (likely as component), create new root element
-        isInitialPatch = true;
-        createElm(vnode, insertedVnodeQueue);
-      } else {
-        var isRealElement = isDef(oldVnode.nodeType);
-        if (!isRealElement && sameVnode(oldVnode, vnode)) {
-          // patch existing root node
-          patchVnode(oldVnode, vnode, insertedVnodeQueue, null, null, removeOnly);
-        } else {
-          if (isRealElement) {
-            // mounting to a real element
-            // check if this is server-rendered content and if we can perform
-            // a successful hydration.
-            if (oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) {
-              oldVnode.removeAttribute(SSR_ATTR);
-              hydrating = true;
-            }
-            if (isTrue(hydrating)) {
-              if (hydrate(oldVnode, vnode, insertedVnodeQueue)) {
-                invokeInsertHook(vnode, insertedVnodeQueue, true);
-                return oldVnode
-              } else {
-                warn(
-                  'The client-side rendered virtual DOM tree is not matching ' +
-                  'server-rendered content. This is likely caused by incorrect ' +
-                  'HTML markup, for example nesting block-level elements inside ' +
-                  '<p>, or missing <tbody>. Bailing hydration and performing ' +
-                  'full client-side render.'
-                );
-              }
-            }
-            // either not server-rendered, or hydration failed.
-            // create an empty node and replace it
-            oldVnode = emptyNodeAt(oldVnode);
-          }
-
-          // replacing existing element
-          var oldElm = oldVnode.elm;
-          var parentElm = nodeOps.parentNode(oldElm);
-
-          // create new node
-          createElm(
-            vnode,
-            insertedVnodeQueue,
-            // extremely rare edge case: do not insert if old element is in a
-            // leaving transition. Only happens when combining transition +
-            // keep-alive + HOCs. (#4590)
-            oldElm._leaveCb ? null : parentElm,
-            nodeOps.nextSibling(oldElm)
-          );
-
-          // update parent placeholder node element, recursively
-          if (isDef(vnode.parent)) {
-            var ancestor = vnode.parent;
-            var patchable = isPatchable(vnode);
-            while (ancestor) {
-              for (var i = 0; i < cbs.destroy.length; ++i) {
-                cbs.destroy[i](ancestor);
-              }
-              ancestor.elm = vnode.elm;
-              if (patchable) {
-                for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
-                  cbs.create[i$1](emptyNode, ancestor);
-                }
-                // #6513
-                // invoke insert hooks that may have been merged by create hooks.
-                // e.g. for directives that uses the "inserted" hook.
-                var insert = ancestor.data.hook.insert;
-                if (insert.merged) {
-                  // start at index 1 to avoid re-invoking component mounted hook
-                  for (var i$2 = 1; i$2 < insert.fns.length; i$2++) {
-                    insert.fns[i$2]();
-                  }
-                }
-              } else {
-                registerRef(ancestor);
-              }
-              ancestor = ancestor.parent;
-            }
-          }
-
-          // destroy old node
-          if (isDef(parentElm)) {
-            removeVnodes(parentElm, [oldVnode], 0, 0);
-          } else if (isDef(oldVnode.tag)) {
-            invokeDestroyHook(oldVnode);
-          }
-        }
-      }
-
-      invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch);
-      return vnode.elm
-    }
-  }
-
-  /*  */
-
-  var directives = {
-    create: updateDirectives,
-    update: updateDirectives,
-    destroy: function unbindDirectives (vnode) {
-      updateDirectives(vnode, emptyNode);
-    }
-  };
-
-  function updateDirectives (oldVnode, vnode) {
-    if (oldVnode.data.directives || vnode.data.directives) {
-      _update(oldVnode, vnode);
-    }
-  }
-
-  function _update (oldVnode, vnode) {
-    var isCreate = oldVnode === emptyNode;
-    var isDestroy = vnode === emptyNode;
-    var oldDirs = normalizeDirectives$1(oldVnode.data.directives, oldVnode.context);
-    var newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context);
-
-    var dirsWithInsert = [];
-    var dirsWithPostpatch = [];
-
-    var key, oldDir, dir;
-    for (key in newDirs) {
-      oldDir = oldDirs[key];
-      dir = newDirs[key];
-      if (!oldDir) {
-        // new directive, bind
-        callHook$1(dir, 'bind', vnode, oldVnode);
-        if (dir.def && dir.def.inserted) {
-          dirsWithInsert.push(dir);
-        }
-      } else {
-        // existing directive, update
-        dir.oldValue = oldDir.value;
-        dir.oldArg = oldDir.arg;
-        callHook$1(dir, 'update', vnode, oldVnode);
-        if (dir.def && dir.def.componentUpdated) {
-          dirsWithPostpatch.push(dir);
-        }
-      }
-    }
-
-    if (dirsWithInsert.length) {
-      var callInsert = function () {
-        for (var i = 0; i < dirsWithInsert.length; i++) {
-          callHook$1(dirsWithInsert[i], 'inserted', vnode, oldVnode);
-        }
-      };
-      if (isCreate) {
-        mergeVNodeHook(vnode, 'insert', callInsert);
-      } else {
-        callInsert();
-      }
-    }
-
-    if (dirsWithPostpatch.length) {
-      mergeVNodeHook(vnode, 'postpatch', function () {
-        for (var i = 0; i < dirsWithPostpatch.length; i++) {
-          callHook$1(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode);
-        }
-      });
-    }
-
-    if (!isCreate) {
-      for (key in oldDirs) {
-        if (!newDirs[key]) {
-          // no longer present, unbind
-          callHook$1(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy);
-        }
-      }
-    }
-  }
-
-  var emptyModifiers = Object.create(null);
-
-  function normalizeDirectives$1 (
-    dirs,
-    vm
-  ) {
-    var res = Object.create(null);
-    if (!dirs) {
-      // $flow-disable-line
-      return res
-    }
-    var i, dir;
-    for (i = 0; i < dirs.length; i++) {
-      dir = dirs[i];
-      if (!dir.modifiers) {
-        // $flow-disable-line
-        dir.modifiers = emptyModifiers;
-      }
-      res[getRawDirName(dir)] = dir;
-      dir.def = resolveAsset(vm.$options, 'directives', dir.name, true);
-    }
-    // $flow-disable-line
-    return res
-  }
-
-  function getRawDirName (dir) {
-    return dir.rawName || ((dir.name) + "." + (Object.keys(dir.modifiers || {}).join('.')))
-  }
-
-  function callHook$1 (dir, hook, vnode, oldVnode, isDestroy) {
-    var fn = dir.def && dir.def[hook];
-    if (fn) {
-      try {
-        fn(vnode.elm, dir, vnode, oldVnode, isDestroy);
-      } catch (e) {
-        handleError(e, vnode.context, ("directive " + (dir.name) + " " + hook + " hook"));
-      }
-    }
-  }
-
-  var baseModules = [
-    ref,
-    directives
-  ];
-
-  /*  */
-
-  function updateAttrs (oldVnode, vnode) {
-    var opts = vnode.componentOptions;
-    if (isDef(opts) && opts.Ctor.options.inheritAttrs === false) {
-      return
-    }
-    if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {
-      return
-    }
-    var key, cur, old;
-    var elm = vnode.elm;
-    var oldAttrs = oldVnode.data.attrs || {};
-    var attrs = vnode.data.attrs || {};
-    // clone observed objects, as the user probably wants to mutate it
-    if (isDef(attrs.__ob__)) {
-      attrs = vnode.data.attrs = extend({}, attrs);
-    }
-
-    for (key in attrs) {
-      cur = attrs[key];
-      old = oldAttrs[key];
-      if (old !== cur) {
-        setAttr(elm, key, cur);
-      }
-    }
-    // #4391: in IE9, setting type can reset value for input[type=radio]
-    // #6666: IE/Edge forces progress value down to 1 before setting a max
-    /* istanbul ignore if */
-    if ((isIE || isEdge) && attrs.value !== oldAttrs.value) {
-      setAttr(elm, 'value', attrs.value);
-    }
-    for (key in oldAttrs) {
-      if (isUndef(attrs[key])) {
-        if (isXlink(key)) {
-          elm.removeAttributeNS(xlinkNS, getXlinkProp(key));
-        } else if (!isEnumeratedAttr(key)) {
-          elm.removeAttribute(key);
-        }
-      }
-    }
-  }
-
-  function setAttr (el, key, value) {
-    if (el.tagName.indexOf('-') > -1) {
-      baseSetAttr(el, key, value);
-    } else if (isBooleanAttr(key)) {
-      // set attribute for blank value
-      // e.g. <option disabled>Select one</option>
-      if (isFalsyAttrValue(value)) {
-        el.removeAttribute(key);
-      } else {
-        // technically allowfullscreen is a boolean attribute for <iframe>,
-        // but Flash expects a value of "true" when used on <embed> tag
-        value = key === 'allowfullscreen' && el.tagName === 'EMBED'
-          ? 'true'
-          : key;
-        el.setAttribute(key, value);
-      }
-    } else if (isEnumeratedAttr(key)) {
-      el.setAttribute(key, convertEnumeratedValue(key, value));
-    } else if (isXlink(key)) {
-      if (isFalsyAttrValue(value)) {
-        el.removeAttributeNS(xlinkNS, getXlinkProp(key));
-      } else {
-        el.setAttributeNS(xlinkNS, key, value);
-      }
-    } else {
-      baseSetAttr(el, key, value);
-    }
-  }
-
-  function baseSetAttr (el, key, value) {
-    if (isFalsyAttrValue(value)) {
-      el.removeAttribute(key);
-    } else {
-      // #7138: IE10 & 11 fires input event when setting placeholder on
-      // <textarea>... block the first input event and remove the blocker
-      // immediately.
-      /* istanbul ignore if */
-      if (
-        isIE && !isIE9 &&
-        el.tagName === 'TEXTAREA' &&
-        key === 'placeholder' && value !== '' && !el.__ieph
-      ) {
-        var blocker = function (e) {
-          e.stopImmediatePropagation();
-          el.removeEventListener('input', blocker);
-        };
-        el.addEventListener('input', blocker);
-        // $flow-disable-line
-        el.__ieph = true; /* IE placeholder patched */
-      }
-      el.setAttribute(key, value);
-    }
-  }
-
-  var attrs = {
-    create: updateAttrs,
-    update: updateAttrs
-  };
-
-  /*  */
-
-  function updateClass (oldVnode, vnode) {
-    var el = vnode.elm;
-    var data = vnode.data;
-    var oldData = oldVnode.data;
-    if (
-      isUndef(data.staticClass) &&
-      isUndef(data.class) && (
-        isUndef(oldData) || (
-          isUndef(oldData.staticClass) &&
-          isUndef(oldData.class)
-        )
-      )
-    ) {
-      return
-    }
-
-    var cls = genClassForVnode(vnode);
-
-    // handle transition classes
-    var transitionClass = el._transitionClasses;
-    if (isDef(transitionClass)) {
-      cls = concat(cls, stringifyClass(transitionClass));
-    }
-
-    // set the class
-    if (cls !== el._prevClass) {
-      el.setAttribute('class', cls);
-      el._prevClass = cls;
-    }
-  }
-
-  var klass = {
-    create: updateClass,
-    update: updateClass
-  };
-
-  /*  */
-
-  var validDivisionCharRE = /[\w).+\-_$\]]/;
-
-  function parseFilters (exp) {
-    var inSingle = false;
-    var inDouble = false;
-    var inTemplateString = false;
-    var inRegex = false;
-    var curly = 0;
-    var square = 0;
-    var paren = 0;
-    var lastFilterIndex = 0;
-    var c, prev, i, expression, filters;
-
-    for (i = 0; i < exp.length; i++) {
-      prev = c;
-      c = exp.charCodeAt(i);
-      if (inSingle) {
-        if (c === 0x27 && prev !== 0x5C) { inSingle = false; }
-      } else if (inDouble) {
-        if (c === 0x22 && prev !== 0x5C) { inDouble = false; }
-      } else if (inTemplateString) {
-        if (c === 0x60 && prev !== 0x5C) { inTemplateString = false; }
-      } else if (inRegex) {
-        if (c === 0x2f && prev !== 0x5C) { inRegex = false; }
-      } else if (
-        c === 0x7C && // pipe
-        exp.charCodeAt(i + 1) !== 0x7C &&
-        exp.charCodeAt(i - 1) !== 0x7C &&
-        !curly && !square && !paren
-      ) {
-        if (expression === undefined) {
-          // first filter, end of expression
-          lastFilterIndex = i + 1;
-          expression = exp.slice(0, i).trim();
-        } else {
-          pushFilter();
-        }
-      } else {
-        switch (c) {
-          case 0x22: inDouble = true; break         // "
-          case 0x27: inSingle = true; break         // '
-          case 0x60: inTemplateString = true; break // `
-          case 0x28: paren++; break                 // (
-          case 0x29: paren--; break                 // )
-          case 0x5B: square++; break                // [
-          case 0x5D: square--; break                // ]
-          case 0x7B: curly++; break                 // {
-          case 0x7D: curly--; break                 // }
-        }
-        if (c === 0x2f) { // /
-          var j = i - 1;
-          var p = (void 0);
-          // find first non-whitespace prev char
-          for (; j >= 0; j--) {
-            p = exp.charAt(j);
-            if (p !== ' ') { break }
-          }
-          if (!p || !validDivisionCharRE.test(p)) {
-            inRegex = true;
-          }
-        }
-      }
-    }
-
-    if (expression === undefined) {
-      expression = exp.slice(0, i).trim();
-    } else if (lastFilterIndex !== 0) {
-      pushFilter();
-    }
-
-    function pushFilter () {
-      (filters || (filters = [])).push(exp.slice(lastFilterIndex, i).trim());
-      lastFilterIndex = i + 1;
-    }
-
-    if (filters) {
-      for (i = 0; i < filters.length; i++) {
-        expression = wrapFilter(expression, filters[i]);
-      }
-    }
-
-    return expression
-  }
-
-  function wrapFilter (exp, filter) {
-    var i = filter.indexOf('(');
-    if (i < 0) {
-      // _f: resolveFilter
-      return ("_f(\"" + filter + "\")(" + exp + ")")
-    } else {
-      var name = filter.slice(0, i);
-      var args = filter.slice(i + 1);
-      return ("_f(\"" + name + "\")(" + exp + (args !== ')' ? ',' + args : args))
-    }
-  }
-
-  /*  */
-
-
-
-  /* eslint-disable no-unused-vars */
-  function baseWarn (msg, range) {
-    console.error(("[Vue compiler]: " + msg));
-  }
-  /* eslint-enable no-unused-vars */
-
-  function pluckModuleFunction (
-    modules,
-    key
-  ) {
-    return modules
-      ? modules.map(function (m) { return m[key]; }).filter(function (_) { return _; })
-      : []
-  }
-
-  function addProp (el, name, value, range, dynamic) {
-    (el.props || (el.props = [])).push(rangeSetItem({ name: name, value: value, dynamic: dynamic }, range));
-    el.plain = false;
-  }
-
-  function addAttr (el, name, value, range, dynamic) {
-    var attrs = dynamic
-      ? (el.dynamicAttrs || (el.dynamicAttrs = []))
-      : (el.attrs || (el.attrs = []));
-    attrs.push(rangeSetItem({ name: name, value: value, dynamic: dynamic }, range));
-    el.plain = false;
-  }
-
-  // add a raw attr (use this in preTransforms)
-  function addRawAttr (el, name, value, range) {
-    el.attrsMap[name] = value;
-    el.attrsList.push(rangeSetItem({ name: name, value: value }, range));
-  }
-
-  function addDirective (
-    el,
-    name,
-    rawName,
-    value,
-    arg,
-    isDynamicArg,
-    modifiers,
-    range
-  ) {
-    (el.directives || (el.directives = [])).push(rangeSetItem({
-      name: name,
-      rawName: rawName,
-      value: value,
-      arg: arg,
-      isDynamicArg: isDynamicArg,
-      modifiers: modifiers
-    }, range));
-    el.plain = false;
-  }
-
-  function prependModifierMarker (symbol, name, dynamic) {
-    return dynamic
-      ? ("_p(" + name + ",\"" + symbol + "\")")
-      : symbol + name // mark the event as captured
-  }
-
-  function addHandler (
-    el,
-    name,
-    value,
-    modifiers,
-    important,
-    warn,
-    range,
-    dynamic
-  ) {
-    modifiers = modifiers || emptyObject;
-    // warn prevent and passive modifier
-    /* istanbul ignore if */
-    if (
-      warn &&
-      modifiers.prevent && modifiers.passive
-    ) {
-      warn(
-        'passive and prevent can\'t be used together. ' +
-        'Passive handler can\'t prevent default event.',
-        range
-      );
-    }
-
-    // normalize click.right and click.middle since they don't actually fire
-    // this is technically browser-specific, but at least for now browsers are
-    // the only target envs that have right/middle clicks.
-    if (modifiers.right) {
-      if (dynamic) {
-        name = "(" + name + ")==='click'?'contextmenu':(" + name + ")";
-      } else if (name === 'click') {
-        name = 'contextmenu';
-        delete modifiers.right;
-      }
-    } else if (modifiers.middle) {
-      if (dynamic) {
-        name = "(" + name + ")==='click'?'mouseup':(" + name + ")";
-      } else if (name === 'click') {
-        name = 'mouseup';
-      }
-    }
-
-    // check capture modifier
-    if (modifiers.capture) {
-      delete modifiers.capture;
-      name = prependModifierMarker('!', name, dynamic);
-    }
-    if (modifiers.once) {
-      delete modifiers.once;
-      name = prependModifierMarker('~', name, dynamic);
-    }
-    /* istanbul ignore if */
-    if (modifiers.passive) {
-      delete modifiers.passive;
-      name = prependModifierMarker('&', name, dynamic);
-    }
-
-    var events;
-    if (modifiers.native) {
-      delete modifiers.native;
-      events = el.nativeEvents || (el.nativeEvents = {});
-    } else {
-      events = el.events || (el.events = {});
-    }
-
-    var newHandler = rangeSetItem({ value: value.trim(), dynamic: dynamic }, range);
-    if (modifiers !== emptyObject) {
-      newHandler.modifiers = modifiers;
-    }
-
-    var handlers = events[name];
-    /* istanbul ignore if */
-    if (Array.isArray(handlers)) {
-      important ? handlers.unshift(newHandler) : handlers.push(newHandler);
-    } else if (handlers) {
-      events[name] = important ? [newHandler, handlers] : [handlers, newHandler];
-    } else {
-      events[name] = newHandler;
-    }
-
-    el.plain = false;
-  }
-
-  function getRawBindingAttr (
-    el,
-    name
-  ) {
-    return el.rawAttrsMap[':' + name] ||
-      el.rawAttrsMap['v-bind:' + name] ||
-      el.rawAttrsMap[name]
-  }
-
-  function getBindingAttr (
-    el,
-    name,
-    getStatic
-  ) {
-    var dynamicValue =
-      getAndRemoveAttr(el, ':' + name) ||
-      getAndRemoveAttr(el, 'v-bind:' + name);
-    if (dynamicValue != null) {
-      return parseFilters(dynamicValue)
-    } else if (getStatic !== false) {
-      var staticValue = getAndRemoveAttr(el, name);
-      if (staticValue != null) {
-        return JSON.stringify(staticValue)
-      }
-    }
-  }
-
-  // note: this only removes the attr from the Array (attrsList) so that it
-  // doesn't get processed by processAttrs.
-  // By default it does NOT remove it from the map (attrsMap) because the map is
-  // needed during codegen.
-  function getAndRemoveAttr (
-    el,
-    name,
-    removeFromMap
-  ) {
-    var val;
-    if ((val = el.attrsMap[name]) != null) {
-      var list = el.attrsList;
-      for (var i = 0, l = list.length; i < l; i++) {
-        if (list[i].name === name) {
-          list.splice(i, 1);
-          break
-        }
-      }
-    }
-    if (removeFromMap) {
-      delete el.attrsMap[name];
-    }
-    return val
-  }
-
-  function getAndRemoveAttrByRegex (
-    el,
-    name
-  ) {
-    var list = el.attrsList;
-    for (var i = 0, l = list.length; i < l; i++) {
-      var attr = list[i];
-      if (name.test(attr.name)) {
-        list.splice(i, 1);
-        return attr
-      }
-    }
-  }
-
-  function rangeSetItem (
-    item,
-    range
-  ) {
-    if (range) {
-      if (range.start != null) {
-        item.start = range.start;
-      }
-      if (range.end != null) {
-        item.end = range.end;
-      }
-    }
-    return item
-  }
-
-  /*  */
-
-  /**
-   * Cross-platform code generation for component v-model
-   */
-  function genComponentModel (
-    el,
-    value,
-    modifiers
-  ) {
-    var ref = modifiers || {};
-    var number = ref.number;
-    var trim = ref.trim;
-
-    var baseValueExpression = '$$v';
-    var valueExpression = baseValueExpression;
-    if (trim) {
-      valueExpression =
-        "(typeof " + baseValueExpression + " === 'string'" +
-        "? " + baseValueExpression + ".trim()" +
-        ": " + baseValueExpression + ")";
-    }
-    if (number) {
-      valueExpression = "_n(" + valueExpression + ")";
-    }
-    var assignment = genAssignmentCode(value, valueExpression);
-
-    el.model = {
-      value: ("(" + value + ")"),
-      expression: JSON.stringify(value),
-      callback: ("function (" + baseValueExpression + ") {" + assignment + "}")
-    };
-  }
-
-  /**
-   * Cross-platform codegen helper for generating v-model value assignment code.
-   */
-  function genAssignmentCode (
-    value,
-    assignment
-  ) {
-    var res = parseModel(value);
-    if (res.key === null) {
-      return (value + "=" + assignment)
-    } else {
-      return ("$set(" + (res.exp) + ", " + (res.key) + ", " + assignment + ")")
-    }
-  }
-
-  /**
-   * Parse a v-model expression into a base path and a final key segment.
-   * Handles both dot-path and possible square brackets.
-   *
-   * Possible cases:
-   *
-   * - test
-   * - test[key]
-   * - test[test1[key]]
-   * - test["a"][key]
-   * - xxx.test[a[a].test1[key]]
-   * - test.xxx.a["asa"][test1[key]]
-   *
-   */
-
-  var len, str, chr, index$1, expressionPos, expressionEndPos;
-
-
-
-  function parseModel (val) {
-    // Fix https://github.com/vuejs/vue/pull/7730
-    // allow v-model="obj.val " (trailing whitespace)
-    val = val.trim();
-    len = val.length;
-
-    if (val.indexOf('[') < 0 || val.lastIndexOf(']') < len - 1) {
-      index$1 = val.lastIndexOf('.');
-      if (index$1 > -1) {
-        return {
-          exp: val.slice(0, index$1),
-          key: '"' + val.slice(index$1 + 1) + '"'
-        }
-      } else {
-        return {
-          exp: val,
-          key: null
-        }
-      }
-    }
-
-    str = val;
-    index$1 = expressionPos = expressionEndPos = 0;
-
-    while (!eof()) {
-      chr = next();
-      /* istanbul ignore if */
-      if (isStringStart(chr)) {
-        parseString(chr);
-      } else if (chr === 0x5B) {
-        parseBracket(chr);
-      }
-    }
-
-    return {
-      exp: val.slice(0, expressionPos),
-      key: val.slice(expressionPos + 1, expressionEndPos)
-    }
-  }
-
-  function next () {
-    return str.charCodeAt(++index$1)
-  }
-
-  function eof () {
-    return index$1 >= len
-  }
-
-  function isStringStart (chr) {
-    return chr === 0x22 || chr === 0x27
-  }
-
-  function parseBracket (chr) {
-    var inBracket = 1;
-    expressionPos = index$1;
-    while (!eof()) {
-      chr = next();
-      if (isStringStart(chr)) {
-        parseString(chr);
-        continue
-      }
-      if (chr === 0x5B) { inBracket++; }
-      if (chr === 0x5D) { inBracket--; }
-      if (inBracket === 0) {
-        expressionEndPos = index$1;
-        break
-      }
-    }
-  }
-
-  function parseString (chr) {
-    var stringQuote = chr;
-    while (!eof()) {
-      chr = next();
-      if (chr === stringQuote) {
-        break
-      }
-    }
-  }
-
-  /*  */
-
-  var warn$1;
-
-  // in some cases, the event used has to be determined at runtime
-  // so we used some reserved tokens during compile.
-  var RANGE_TOKEN = '__r';
-  var CHECKBOX_RADIO_TOKEN = '__c';
-
-  function model (
-    el,
-    dir,
-    _warn
-  ) {
-    warn$1 = _warn;
-    var value = dir.value;
-    var modifiers = dir.modifiers;
-    var tag = el.tag;
-    var type = el.attrsMap.type;
-
-    {
-      // inputs with type="file" are read only and setting the input's
-      // value will throw an error.
-      if (tag === 'input' && type === 'file') {
-        warn$1(
-          "<" + (el.tag) + " v-model=\"" + value + "\" type=\"file\">:\n" +
-          "File inputs are read only. Use a v-on:change listener instead.",
-          el.rawAttrsMap['v-model']
-        );
-      }
-    }
-
-    if (el.component) {
-      genComponentModel(el, value, modifiers);
-      // component v-model doesn't need extra runtime
-      return false
-    } else if (tag === 'select') {
-      genSelect(el, value, modifiers);
-    } else if (tag === 'input' && type === 'checkbox') {
-      genCheckboxModel(el, value, modifiers);
-    } else if (tag === 'input' && type === 'radio') {
-      genRadioModel(el, value, modifiers);
-    } else if (tag === 'input' || tag === 'textarea') {
-      genDefaultModel(el, value, modifiers);
-    } else if (!config.isReservedTag(tag)) {
-      genComponentModel(el, value, modifiers);
-      // component v-model doesn't need extra runtime
-      return false
-    } else {
-      warn$1(
-        "<" + (el.tag) + " v-model=\"" + value + "\">: " +
-        "v-model is not supported on this element type. " +
-        'If you are working with contenteditable, it\'s recommended to ' +
-        'wrap a library dedicated for that purpose inside a custom component.',
-        el.rawAttrsMap['v-model']
-      );
-    }
-
-    // ensure runtime directive metadata
-    return true
-  }
-
-  function genCheckboxModel (
-    el,
-    value,
-    modifiers
-  ) {
-    var number = modifiers && modifiers.number;
-    var valueBinding = getBindingAttr(el, 'value') || 'null';
-    var trueValueBinding = getBindingAttr(el, 'true-value') || 'true';
-    var falseValueBinding = getBindingAttr(el, 'false-value') || 'false';
-    addProp(el, 'checked',
-      "Array.isArray(" + value + ")" +
-      "?_i(" + value + "," + valueBinding + ")>-1" + (
-        trueValueBinding === 'true'
-          ? (":(" + value + ")")
-          : (":_q(" + value + "," + trueValueBinding + ")")
-      )
-    );
-    addHandler(el, 'change',
-      "var $$a=" + value + "," +
-          '$$el=$event.target,' +
-          "$$c=$$el.checked?(" + trueValueBinding + "):(" + falseValueBinding + ");" +
-      'if(Array.isArray($$a)){' +
-        "var $$v=" + (number ? '_n(' + valueBinding + ')' : valueBinding) + "," +
-            '$$i=_i($$a,$$v);' +
-        "if($$el.checked){$$i<0&&(" + (genAssignmentCode(value, '$$a.concat([$$v])')) + ")}" +
-        "else{$$i>-1&&(" + (genAssignmentCode(value, '$$a.slice(0,$$i).concat($$a.slice($$i+1))')) + ")}" +
-      "}else{" + (genAssignmentCode(value, '$$c')) + "}",
-      null, true
-    );
-  }
-
-  function genRadioModel (
-    el,
-    value,
-    modifiers
-  ) {
-    var number = modifiers && modifiers.number;
-    var valueBinding = getBindingAttr(el, 'value') || 'null';
-    valueBinding = number ? ("_n(" + valueBinding + ")") : valueBinding;
-    addProp(el, 'checked', ("_q(" + value + "," + valueBinding + ")"));
-    addHandler(el, 'change', genAssignmentCode(value, valueBinding), null, true);
-  }
-
-  function genSelect (
-    el,
-    value,
-    modifiers
-  ) {
-    var number = modifiers && modifiers.number;
-    var selectedVal = "Array.prototype.filter" +
-      ".call($event.target.options,function(o){return o.selected})" +
-      ".map(function(o){var val = \"_value\" in o ? o._value : o.value;" +
-      "return " + (number ? '_n(val)' : 'val') + "})";
-
-    var assignment = '$event.target.multiple ? $$selectedVal : $$selectedVal[0]';
-    var code = "var $$selectedVal = " + selectedVal + ";";
-    code = code + " " + (genAssignmentCode(value, assignment));
-    addHandler(el, 'change', code, null, true);
-  }
-
-  function genDefaultModel (
-    el,
-    value,
-    modifiers
-  ) {
-    var type = el.attrsMap.type;
-
-    // warn if v-bind:value conflicts with v-model
-    // except for inputs with v-bind:type
-    {
-      var value$1 = el.attrsMap['v-bind:value'] || el.attrsMap[':value'];
-      var typeBinding = el.attrsMap['v-bind:type'] || el.attrsMap[':type'];
-      if (value$1 && !typeBinding) {
-        var binding = el.attrsMap['v-bind:value'] ? 'v-bind:value' : ':value';
-        warn$1(
-          binding + "=\"" + value$1 + "\" conflicts with v-model on the same element " +
-          'because the latter already expands to a value binding internally',
-          el.rawAttrsMap[binding]
-        );
-      }
-    }
-
-    var ref = modifiers || {};
-    var lazy = ref.lazy;
-    var number = ref.number;
-    var trim = ref.trim;
-    var needCompositionGuard = !lazy && type !== 'range';
-    var event = lazy
-      ? 'change'
-      : type === 'range'
-        ? RANGE_TOKEN
-        : 'input';
-
-    var valueExpression = '$event.target.value';
-    if (trim) {
-      valueExpression = "$event.target.value.trim()";
-    }
-    if (number) {
-      valueExpression = "_n(" + valueExpression + ")";
-    }
-
-    var code = genAssignmentCode(value, valueExpression);
-    if (needCompositionGuard) {
-      code = "if($event.target.composing)return;" + code;
-    }
-
-    addProp(el, 'value', ("(" + value + ")"));
-    addHandler(el, event, code, null, true);
-    if (trim || number) {
-      addHandler(el, 'blur', '$forceUpdate()');
-    }
-  }
-
-  /*  */
-
-  // normalize v-model event tokens that can only be determined at runtime.
-  // it's important to place the event as the first in the array because
-  // the whole point is ensuring the v-model callback gets called before
-  // user-attached handlers.
-  function normalizeEvents (on) {
-    /* istanbul ignore if */
-    if (isDef(on[RANGE_TOKEN])) {
-      // IE input[type=range] only supports `change` event
-      var event = isIE ? 'change' : 'input';
-      on[event] = [].concat(on[RANGE_TOKEN], on[event] || []);
-      delete on[RANGE_TOKEN];
-    }
-    // This was originally intended to fix #4521 but no longer necessary
-    // after 2.5. Keeping it for backwards compat with generated code from < 2.4
-    /* istanbul ignore if */
-    if (isDef(on[CHECKBOX_RADIO_TOKEN])) {
-      on.change = [].concat(on[CHECKBOX_RADIO_TOKEN], on.change || []);
-      delete on[CHECKBOX_RADIO_TOKEN];
-    }
-  }
-
-  var target$1;
-
-  function createOnceHandler$1 (event, handler, capture) {
-    var _target = target$1; // save current target element in closure
-    return function onceHandler () {
-      var res = handler.apply(null, arguments);
-      if (res !== null) {
-        remove$2(event, onceHandler, capture, _target);
-      }
-    }
-  }
-
-  // #9446: Firefox <= 53 (in particular, ESR 52) has incorrect Event.timeStamp
-  // implementation and does not fire microtasks in between event propagation, so
-  // safe to exclude.
-  var useMicrotaskFix = isUsingMicroTask && !(isFF && Number(isFF[1]) <= 53);
-
-  function add$1 (
-    name,
-    handler,
-    capture,
-    passive
-  ) {
-    // async edge case #6566: inner click event triggers patch, event handler
-    // attached to outer element during patch, and triggered again. This
-    // happens because browsers fire microtask ticks between event propagation.
-    // the solution is simple: we save the timestamp when a handler is attached,
-    // and the handler would only fire if the event passed to it was fired
-    // AFTER it was attached.
-    if (useMicrotaskFix) {
-      var attachedTimestamp = currentFlushTimestamp;
-      var original = handler;
-      handler = original._wrapper = function (e) {
-        if (
-          // no bubbling, should always fire.
-          // this is just a safety net in case event.timeStamp is unreliable in
-          // certain weird environments...
-          e.target === e.currentTarget ||
-          // event is fired after handler attachment
-          e.timeStamp >= attachedTimestamp ||
-          // bail for environments that have buggy event.timeStamp implementations
-          // #9462 iOS 9 bug: event.timeStamp is 0 after history.pushState
-          // #9681 QtWebEngine event.timeStamp is negative value
-          e.timeStamp <= 0 ||
-          // #9448 bail if event is fired in another document in a multi-page
-          // electron/nw.js app, since event.timeStamp will be using a different
-          // starting reference
-          e.target.ownerDocument !== document
-        ) {
-          return original.apply(this, arguments)
-        }
-      };
-    }
-    target$1.addEventListener(
-      name,
-      handler,
-      supportsPassive
-        ? { capture: capture, passive: passive }
-        : capture
-    );
-  }
-
-  function remove$2 (
-    name,
-    handler,
-    capture,
-    _target
-  ) {
-    (_target || target$1).removeEventListener(
-      name,
-      handler._wrapper || handler,
-      capture
-    );
-  }
-
-  function updateDOMListeners (oldVnode, vnode) {
-    if (isUndef(oldVnode.data.on) && isUndef(vnode.data.on)) {
-      return
-    }
-    var on = vnode.data.on || {};
-    var oldOn = oldVnode.data.on || {};
-    target$1 = vnode.elm;
-    normalizeEvents(on);
-    updateListeners(on, oldOn, add$1, remove$2, createOnceHandler$1, vnode.context);
-    target$1 = undefined;
-  }
-
-  var events = {
-    create: updateDOMListeners,
-    update: updateDOMListeners
-  };
-
-  /*  */
-
-  var svgContainer;
-
-  function updateDOMProps (oldVnode, vnode) {
-    if (isUndef(oldVnode.data.domProps) && isUndef(vnode.data.domProps)) {
-      return
-    }
-    var key, cur;
-    var elm = vnode.elm;
-    var oldProps = oldVnode.data.domProps || {};
-    var props = vnode.data.domProps || {};
-    // clone observed objects, as the user probably wants to mutate it
-    if (isDef(props.__ob__)) {
-      props = vnode.data.domProps = extend({}, props);
-    }
-
-    for (key in oldProps) {
-      if (!(key in props)) {
-        elm[key] = '';
-      }
-    }
-
-    for (key in props) {
-      cur = props[key];
-      // ignore children if the node has textContent or innerHTML,
-      // as these will throw away existing DOM nodes and cause removal errors
-      // on subsequent patches (#3360)
-      if (key === 'textContent' || key === 'innerHTML') {
-        if (vnode.children) { vnode.children.length = 0; }
-        if (cur === oldProps[key]) { continue }
-        // #6601 work around Chrome version <= 55 bug where single textNode
-        // replaced by innerHTML/textContent retains its parentNode property
-        if (elm.childNodes.length === 1) {
-          elm.removeChild(elm.childNodes[0]);
-        }
-      }
-
-      if (key === 'value' && elm.tagName !== 'PROGRESS') {
-        // store value as _value as well since
-        // non-string values will be stringified
-        elm._value = cur;
-        // avoid resetting cursor position when value is the same
-        var strCur = isUndef(cur) ? '' : String(cur);
-        if (shouldUpdateValue(elm, strCur)) {
-          elm.value = strCur;
-        }
-      } else if (key === 'innerHTML' && isSVG(elm.tagName) && isUndef(elm.innerHTML)) {
-        // IE doesn't support innerHTML for SVG elements
-        svgContainer = svgContainer || document.createElement('div');
-        svgContainer.innerHTML = "<svg>" + cur + "</svg>";
-        var svg = svgContainer.firstChild;
-        while (elm.firstChild) {
-          elm.removeChild(elm.firstChild);
-        }
-        while (svg.firstChild) {
-          elm.appendChild(svg.firstChild);
-        }
-      } else if (
-        // skip the update if old and new VDOM state is the same.
-        // `value` is handled separately because the DOM value may be temporarily
-        // out of sync with VDOM state due to focus, composition and modifiers.
-        // This  #4521 by skipping the unnecesarry `checked` update.
-        cur !== oldProps[key]
-      ) {
-        // some property updates can throw
-        // e.g. `value` on <progress> w/ non-finite value
-        try {
-          elm[key] = cur;
-        } catch (e) {}
-      }
-    }
-  }
-
-  // check platforms/web/util/attrs.js acceptValue
-
-
-  function shouldUpdateValue (elm, checkVal) {
-    return (!elm.composing && (
-      elm.tagName === 'OPTION' ||
-      isNotInFocusAndDirty(elm, checkVal) ||
-      isDirtyWithModifiers(elm, checkVal)
-    ))
-  }
-
-  function isNotInFocusAndDirty (elm, checkVal) {
-    // return true when textbox (.number and .trim) loses focus and its value is
-    // not equal to the updated value
-    var notInFocus = true;
-    // #6157
-    // work around IE bug when accessing document.activeElement in an iframe
-    try { notInFocus = document.activeElement !== elm; } catch (e) {}
-    return notInFocus && elm.value !== checkVal
-  }
-
-  function isDirtyWithModifiers (elm, newVal) {
-    var value = elm.value;
-    var modifiers = elm._vModifiers; // injected by v-model runtime
-    if (isDef(modifiers)) {
-      if (modifiers.number) {
-        return toNumber(value) !== toNumber(newVal)
-      }
-      if (modifiers.trim) {
-        return value.trim() !== newVal.trim()
-      }
-    }
-    return value !== newVal
-  }
-
-  var domProps = {
-    create: updateDOMProps,
-    update: updateDOMProps
-  };
-
-  /*  */
-
-  var parseStyleText = cached(function (cssText) {
-    var res = {};
-    var listDelimiter = /;(?![^(]*\))/g;
-    var propertyDelimiter = /:(.+)/;
-    cssText.split(listDelimiter).forEach(function (item) {
-      if (item) {
-        var tmp = item.split(propertyDelimiter);
-        tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim());
-      }
-    });
-    return res
-  });
-
-  // merge static and dynamic style data on the same vnode
-  function normalizeStyleData (data) {
-    var style = normalizeStyleBinding(data.style);
-    // static style is pre-processed into an object during compilation
-    // and is always a fresh object, so it's safe to merge into it
-    return data.staticStyle
-      ? extend(data.staticStyle, style)
-      : style
-  }
-
-  // normalize possible array / string values into Object
-  function normalizeStyleBinding (bindingStyle) {
-    if (Array.isArray(bindingStyle)) {
-      return toObject(bindingStyle)
-    }
-    if (typeof bindingStyle === 'string') {
-      return parseStyleText(bindingStyle)
-    }
-    return bindingStyle
-  }
-
-  /**
-   * parent component style should be after child's
-   * so that parent component's style could override it
-   */
-  function getStyle (vnode, checkChild) {
-    var res = {};
-    var styleData;
-
-    if (checkChild) {
-      var childNode = vnode;
-      while (childNode.componentInstance) {
-        childNode = childNode.componentInstance._vnode;
-        if (
-          childNode && childNode.data &&
-          (styleData = normalizeStyleData(childNode.data))
-        ) {
-          extend(res, styleData);
-        }
-      }
-    }
-
-    if ((styleData = normalizeStyleData(vnode.data))) {
-      extend(res, styleData);
-    }
-
-    var parentNode = vnode;
-    while ((parentNode = parentNode.parent)) {
-      if (parentNode.data && (styleData = normalizeStyleData(parentNode.data))) {
-        extend(res, styleData);
-      }
-    }
-    return res
-  }
-
-  /*  */
-
-  var cssVarRE = /^--/;
-  var importantRE = /\s*!important$/;
-  var setProp = function (el, name, val) {
-    /* istanbul ignore if */
-    if (cssVarRE.test(name)) {
-      el.style.setProperty(name, val);
-    } else if (importantRE.test(val)) {
-      el.style.setProperty(hyphenate(name), val.replace(importantRE, ''), 'important');
-    } else {
-      var normalizedName = normalize(name);
-      if (Array.isArray(val)) {
-        // Support values array created by autoprefixer, e.g.
-        // {display: ["-webkit-box", "-ms-flexbox", "flex"]}
-        // Set them one by one, and the browser will only set those it can recognize
-        for (var i = 0, len = val.length; i < len; i++) {
-          el.style[normalizedName] = val[i];
-        }
-      } else {
-        el.style[normalizedName] = val;
-      }
-    }
-  };
-
-  var vendorNames = ['Webkit', 'Moz', 'ms'];
-
-  var emptyStyle;
-  var normalize = cached(function (prop) {
-    emptyStyle = emptyStyle || document.createElement('div').style;
-    prop = camelize(prop);
-    if (prop !== 'filter' && (prop in emptyStyle)) {
-      return prop
-    }
-    var capName = prop.charAt(0).toUpperCase() + prop.slice(1);
-    for (var i = 0; i < vendorNames.length; i++) {
-      var name = vendorNames[i] + capName;
-      if (name in emptyStyle) {
-        return name
-      }
-    }
-  });
-
-  function updateStyle (oldVnode, vnode) {
-    var data = vnode.data;
-    var oldData = oldVnode.data;
-
-    if (isUndef(data.staticStyle) && isUndef(data.style) &&
-      isUndef(oldData.staticStyle) && isUndef(oldData.style)
-    ) {
-      return
-    }
-
-    var cur, name;
-    var el = vnode.elm;
-    var oldStaticStyle = oldData.staticStyle;
-    var oldStyleBinding = oldData.normalizedStyle || oldData.style || {};
-
-    // if static style exists, stylebinding already merged into it when doing normalizeStyleData
-    var oldStyle = oldStaticStyle || oldStyleBinding;
-
-    var style = normalizeStyleBinding(vnode.data.style) || {};
-
-    // store normalized style under a different key for next diff
-    // make sure to clone it if it's reactive, since the user likely wants
-    // to mutate it.
-    vnode.data.normalizedStyle = isDef(style.__ob__)
-      ? extend({}, style)
-      : style;
-
-    var newStyle = getStyle(vnode, true);
-
-    for (name in oldStyle) {
-      if (isUndef(newStyle[name])) {
-        setProp(el, name, '');
-      }
-    }
-    for (name in newStyle) {
-      cur = newStyle[name];
-      if (cur !== oldStyle[name]) {
-        // ie9 setting to null has no effect, must use empty string
-        setProp(el, name, cur == null ? '' : cur);
-      }
-    }
-  }
-
-  var style = {
-    create: updateStyle,
-    update: updateStyle
-  };
-
-  /*  */
-
-  var whitespaceRE = /\s+/;
-
-  /**
-   * Add class with compatibility for SVG since classList is not supported on
-   * SVG elements in IE
-   */
-  function addClass (el, cls) {
-    /* istanbul ignore if */
-    if (!cls || !(cls = cls.trim())) {
-      return
-    }
-
-    /* istanbul ignore else */
-    if (el.classList) {
-      if (cls.indexOf(' ') > -1) {
-        cls.split(whitespaceRE).forEach(function (c) { return el.classList.add(c); });
-      } else {
-        el.classList.add(cls);
-      }
-    } else {
-      var cur = " " + (el.getAttribute('class') || '') + " ";
-      if (cur.indexOf(' ' + cls + ' ') < 0) {
-        el.setAttribute('class', (cur + cls).trim());
-      }
-    }
-  }
-
-  /**
-   * Remove class with compatibility for SVG since classList is not supported on
-   * SVG elements in IE
-   */
-  function removeClass (el, cls) {
-    /* istanbul ignore if */
-    if (!cls || !(cls = cls.trim())) {
-      return
-    }
-
-    /* istanbul ignore else */
-    if (el.classList) {
-      if (cls.indexOf(' ') > -1) {
-        cls.split(whitespaceRE).forEach(function (c) { return el.classList.remove(c); });
-      } else {
-        el.classList.remove(cls);
-      }
-      if (!el.classList.length) {
-        el.removeAttribute('class');
-      }
-    } else {
-      var cur = " " + (el.getAttribute('class') || '') + " ";
-      var tar = ' ' + cls + ' ';
-      while (cur.indexOf(tar) >= 0) {
-        cur = cur.replace(tar, ' ');
-      }
-      cur = cur.trim();
-      if (cur) {
-        el.setAttribute('class', cur);
-      } else {
-        el.removeAttribute('class');
-      }
-    }
-  }
-
-  /*  */
-
-  function resolveTransition (def$$1) {
-    if (!def$$1) {
-      return
-    }
-    /* istanbul ignore else */
-    if (typeof def$$1 === 'object') {
-      var res = {};
-      if (def$$1.css !== false) {
-        extend(res, autoCssTransition(def$$1.name || 'v'));
-      }
-      extend(res, def$$1);
-      return res
-    } else if (typeof def$$1 === 'string') {
-      return autoCssTransition(def$$1)
-    }
-  }
-
-  var autoCssTransition = cached(function (name) {
-    return {
-      enterClass: (name + "-enter"),
-      enterToClass: (name + "-enter-to"),
-      enterActiveClass: (name + "-enter-active"),
-      leaveClass: (name + "-leave"),
-      leaveToClass: (name + "-leave-to"),
-      leaveActiveClass: (name + "-leave-active")
-    }
-  });
-
-  var hasTransition = inBrowser && !isIE9;
-  var TRANSITION = 'transition';
-  var ANIMATION = 'animation';
-
-  // Transition property/event sniffing
-  var transitionProp = 'transition';
-  var transitionEndEvent = 'transitionend';
-  var animationProp = 'animation';
-  var animationEndEvent = 'animationend';
-  if (hasTransition) {
-    /* istanbul ignore if */
-    if (window.ontransitionend === undefined &&
-      window.onwebkittransitionend !== undefined
-    ) {
-      transitionProp = 'WebkitTransition';
-      transitionEndEvent = 'webkitTransitionEnd';
-    }
-    if (window.onanimationend === undefined &&
-      window.onwebkitanimationend !== undefined
-    ) {
-      animationProp = 'WebkitAnimation';
-      animationEndEvent = 'webkitAnimationEnd';
-    }
-  }
-
-  // binding to window is necessary to make hot reload work in IE in strict mode
-  var raf = inBrowser
-    ? window.requestAnimationFrame
-      ? window.requestAnimationFrame.bind(window)
-      : setTimeout
-    : /* istanbul ignore next */ function (fn) { return fn(); };
-
-  function nextFrame (fn) {
-    raf(function () {
-      raf(fn);
-    });
-  }
-
-  function addTransitionClass (el, cls) {
-    var transitionClasses = el._transitionClasses || (el._transitionClasses = []);
-    if (transitionClasses.indexOf(cls) < 0) {
-      transitionClasses.push(cls);
-      addClass(el, cls);
-    }
-  }
-
-  function removeTransitionClass (el, cls) {
-    if (el._transitionClasses) {
-      remove(el._transitionClasses, cls);
-    }
-    removeClass(el, cls);
-  }
-
-  function whenTransitionEnds (
-    el,
-    expectedType,
-    cb
-  ) {
-    var ref = getTransitionInfo(el, expectedType);
-    var type = ref.type;
-    var timeout = ref.timeout;
-    var propCount = ref.propCount;
-    if (!type) { return cb() }
-    var event = type === TRANSITION ? transitionEndEvent : animationEndEvent;
-    var ended = 0;
-    var end = function () {
-      el.removeEventListener(event, onEnd);
-      cb();
-    };
-    var onEnd = function (e) {
-      if (e.target === el) {
-        if (++ended >= propCount) {
-          end();
-        }
-      }
-    };
-    setTimeout(function () {
-      if (ended < propCount) {
-        end();
-      }
-    }, timeout + 1);
-    el.addEventListener(event, onEnd);
-  }
-
-  var transformRE = /\b(transform|all)(,|$)/;
-
-  function getTransitionInfo (el, expectedType) {
-    var styles = window.getComputedStyle(el);
-    // JSDOM may return undefined for transition properties
-    var transitionDelays = (styles[transitionProp + 'Delay'] || '').split(', ');
-    var transitionDurations = (styles[transitionProp + 'Duration'] || '').split(', ');
-    var transitionTimeout = getTimeout(transitionDelays, transitionDurations);
-    var animationDelays = (styles[animationProp + 'Delay'] || '').split(', ');
-    var animationDurations = (styles[animationProp + 'Duration'] || '').split(', ');
-    var animationTimeout = getTimeout(animationDelays, animationDurations);
-
-    var type;
-    var timeout = 0;
-    var propCount = 0;
-    /* istanbul ignore if */
-    if (expectedType === TRANSITION) {
-      if (transitionTimeout > 0) {
-        type = TRANSITION;
-        timeout = transitionTimeout;
-        propCount = transitionDurations.length;
-      }
-    } else if (expectedType === ANIMATION) {
-      if (animationTimeout > 0) {
-        type = ANIMATION;
-        timeout = animationTimeout;
-        propCount = animationDurations.length;
-      }
-    } else {
-      timeout = Math.max(transitionTimeout, animationTimeout);
-      type = timeout > 0
-        ? transitionTimeout > animationTimeout
-          ? TRANSITION
-          : ANIMATION
-        : null;
-      propCount = type
-        ? type === TRANSITION
-          ? transitionDurations.length
-          : animationDurations.length
-        : 0;
-    }
-    var hasTransform =
-      type === TRANSITION &&
-      transformRE.test(styles[transitionProp + 'Property']);
-    return {
-      type: type,
-      timeout: timeout,
-      propCount: propCount,
-      hasTransform: hasTransform
-    }
-  }
-
-  function getTimeout (delays, durations) {
-    /* istanbul ignore next */
-    while (delays.length < durations.length) {
-      delays = delays.concat(delays);
-    }
-
-    return Math.max.apply(null, durations.map(function (d, i) {
-      return toMs(d) + toMs(delays[i])
-    }))
-  }
-
-  // Old versions of Chromium (below 61.0.3163.100) formats floating pointer numbers
-  // in a locale-dependent way, using a comma instead of a dot.
-  // If comma is not replaced with a dot, the input will be rounded down (i.e. acting
-  // as a floor function) causing unexpected behaviors
-  function toMs (s) {
-    return Number(s.slice(0, -1).replace(',', '.')) * 1000
-  }
-
-  /*  */
-
-  function enter (vnode, toggleDisplay) {
-    var el = vnode.elm;
-
-    // call leave callback now
-    if (isDef(el._leaveCb)) {
-      el._leaveCb.cancelled = true;
-      el._leaveCb();
-    }
-
-    var data = resolveTransition(vnode.data.transition);
-    if (isUndef(data)) {
-      return
-    }
-
-    /* istanbul ignore if */
-    if (isDef(el._enterCb) || el.nodeType !== 1) {
-      return
-    }
-
-    var css = data.css;
-    var type = data.type;
-    var enterClass = data.enterClass;
-    var enterToClass = data.enterToClass;
-    var enterActiveClass = data.enterActiveClass;
-    var appearClass = data.appearClass;
-    var appearToClass = data.appearToClass;
-    var appearActiveClass = data.appearActiveClass;
-    var beforeEnter = data.beforeEnter;
-    var enter = data.enter;
-    var afterEnter = data.afterEnter;
-    var enterCancelled = data.enterCancelled;
-    var beforeAppear = data.beforeAppear;
-    var appear = data.appear;
-    var afterAppear = data.afterAppear;
-    var appearCancelled = data.appearCancelled;
-    var duration = data.duration;
-
-    // activeInstance will always be the <transition> component managing this
-    // transition. One edge case to check is when the <transition> is placed
-    // as the root node of a child component. In that case we need to check
-    // <transition>'s parent for appear check.
-    var context = activeInstance;
-    var transitionNode = activeInstance.$vnode;
-    while (transitionNode && transitionNode.parent) {
-      context = transitionNode.context;
-      transitionNode = transitionNode.parent;
-    }
-
-    var isAppear = !context._isMounted || !vnode.isRootInsert;
-
-    if (isAppear && !appear && appear !== '') {
-      return
-    }
-
-    var startClass = isAppear && appearClass
-      ? appearClass
-      : enterClass;
-    var activeClass = isAppear && appearActiveClass
-      ? appearActiveClass
-      : enterActiveClass;
-    var toClass = isAppear && appearToClass
-      ? appearToClass
-      : enterToClass;
-
-    var beforeEnterHook = isAppear
-      ? (beforeAppear || beforeEnter)
-      : beforeEnter;
-    var enterHook = isAppear
-      ? (typeof appear === 'function' ? appear : enter)
-      : enter;
-    var afterEnterHook = isAppear
-      ? (afterAppear || afterEnter)
-      : afterEnter;
-    var enterCancelledHook = isAppear
-      ? (appearCancelled || enterCancelled)
-      : enterCancelled;
-
-    var explicitEnterDuration = toNumber(
-      isObject(duration)
-        ? duration.enter
-        : duration
-    );
-
-    if (explicitEnterDuration != null) {
-      checkDuration(explicitEnterDuration, 'enter', vnode);
-    }
-
-    var expectsCSS = css !== false && !isIE9;
-    var userWantsControl = getHookArgumentsLength(enterHook);
-
-    var cb = el._enterCb = once(function () {
-      if (expectsCSS) {
-        removeTransitionClass(el, toClass);
-        removeTransitionClass(el, activeClass);
-      }
-      if (cb.cancelled) {
-        if (expectsCSS) {
-          removeTransitionClass(el, startClass);
-        }
-        enterCancelledHook && enterCancelledHook(el);
-      } else {
-        afterEnterHook && afterEnterHook(el);
-      }
-      el._enterCb = null;
-    });
-
-    if (!vnode.data.show) {
-      // remove pending leave element on enter by injecting an insert hook
-      mergeVNodeHook(vnode, 'insert', function () {
-        var parent = el.parentNode;
-        var pendingNode = parent && parent._pending && parent._pending[vnode.key];
-        if (pendingNode &&
-          pendingNode.tag === vnode.tag &&
-          pendingNode.elm._leaveCb
-        ) {
-          pendingNode.elm._leaveCb();
-        }
-        enterHook && enterHook(el, cb);
-      });
-    }
-
-    // start enter transition
-    beforeEnterHook && beforeEnterHook(el);
-    if (expectsCSS) {
-      addTransitionClass(el, startClass);
-      addTransitionClass(el, activeClass);
-      nextFrame(function () {
-        removeTransitionClass(el, startClass);
-        if (!cb.cancelled) {
-          addTransitionClass(el, toClass);
-          if (!userWantsControl) {
-            if (isValidDuration(explicitEnterDuration)) {
-              setTimeout(cb, explicitEnterDuration);
-            } else {
-              whenTransitionEnds(el, type, cb);
-            }
-          }
-        }
-      });
-    }
-
-    if (vnode.data.show) {
-      toggleDisplay && toggleDisplay();
-      enterHook && enterHook(el, cb);
-    }
-
-    if (!expectsCSS && !userWantsControl) {
-      cb();
-    }
-  }
-
-  function leave (vnode, rm) {
-    var el = vnode.elm;
-
-    // call enter callback now
-    if (isDef(el._enterCb)) {
-      el._enterCb.cancelled = true;
-      el._enterCb();
-    }
-
-    var data = resolveTransition(vnode.data.transition);
-    if (isUndef(data) || el.nodeType !== 1) {
-      return rm()
-    }
-
-    /* istanbul ignore if */
-    if (isDef(el._leaveCb)) {
-      return
-    }
-
-    var css = data.css;
-    var type = data.type;
-    var leaveClass = data.leaveClass;
-    var leaveToClass = data.leaveToClass;
-    var leaveActiveClass = data.leaveActiveClass;
-    var beforeLeave = data.beforeLeave;
-    var leave = data.leave;
-    var afterLeave = data.afterLeave;
-    var leaveCancelled = data.leaveCancelled;
-    var delayLeave = data.delayLeave;
-    var duration = data.duration;
-
-    var expectsCSS = css !== false && !isIE9;
-    var userWantsControl = getHookArgumentsLength(leave);
-
-    var explicitLeaveDuration = toNumber(
-      isObject(duration)
-        ? duration.leave
-        : duration
-    );
-
-    if (isDef(explicitLeaveDuration)) {
-      checkDuration(explicitLeaveDuration, 'leave', vnode);
-    }
-
-    var cb = el._leaveCb = once(function () {
-      if (el.parentNode && el.parentNode._pending) {
-        el.parentNode._pending[vnode.key] = null;
-      }
-      if (expectsCSS) {
-        removeTransitionClass(el, leaveToClass);
-        removeTransitionClass(el, leaveActiveClass);
-      }
-      if (cb.cancelled) {
-        if (expectsCSS) {
-          removeTransitionClass(el, leaveClass);
-        }
-        leaveCancelled && leaveCancelled(el);
-      } else {
-        rm();
-        afterLeave && afterLeave(el);
-      }
-      el._leaveCb = null;
-    });
-
-    if (delayLeave) {
-      delayLeave(performLeave);
-    } else {
-      performLeave();
-    }
-
-    function performLeave () {
-      // the delayed leave may have already been cancelled
-      if (cb.cancelled) {
-        return
-      }
-      // record leaving element
-      if (!vnode.data.show && el.parentNode) {
-        (el.parentNode._pending || (el.parentNode._pending = {}))[(vnode.key)] = vnode;
-      }
-      beforeLeave && beforeLeave(el);
-      if (expectsCSS) {
-        addTransitionClass(el, leaveClass);
-        addTransitionClass(el, leaveActiveClass);
-        nextFrame(function () {
-          removeTransitionClass(el, leaveClass);
-          if (!cb.cancelled) {
-            addTransitionClass(el, leaveToClass);
-            if (!userWantsControl) {
-              if (isValidDuration(explicitLeaveDuration)) {
-                setTimeout(cb, explicitLeaveDuration);
-              } else {
-                whenTransitionEnds(el, type, cb);
-              }
-            }
-          }
-        });
-      }
-      leave && leave(el, cb);
-      if (!expectsCSS && !userWantsControl) {
-        cb();
-      }
-    }
-  }
-
-  // only used in dev mode
-  function checkDuration (val, name, vnode) {
-    if (typeof val !== 'number') {
-      warn(
-        "<transition> explicit " + name + " duration is not a valid number - " +
-        "got " + (JSON.stringify(val)) + ".",
-        vnode.context
-      );
-    } else if (isNaN(val)) {
-      warn(
-        "<transition> explicit " + name + " duration is NaN - " +
-        'the duration expression might be incorrect.',
-        vnode.context
-      );
-    }
-  }
-
-  function isValidDuration (val) {
-    return typeof val === 'number' && !isNaN(val)
-  }
-
-  /**
-   * Normalize a transition hook's argument length. The hook may be:
-   * - a merged hook (invoker) with the original in .fns
-   * - a wrapped component method (check ._length)
-   * - a plain function (.length)
-   */
-  function getHookArgumentsLength (fn) {
-    if (isUndef(fn)) {
-      return false
-    }
-    var invokerFns = fn.fns;
-    if (isDef(invokerFns)) {
-      // invoker
-      return getHookArgumentsLength(
-        Array.isArray(invokerFns)
-          ? invokerFns[0]
-          : invokerFns
-      )
-    } else {
-      return (fn._length || fn.length) > 1
-    }
-  }
-
-  function _enter (_, vnode) {
-    if (vnode.data.show !== true) {
-      enter(vnode);
-    }
-  }
-
-  var transition = inBrowser ? {
-    create: _enter,
-    activate: _enter,
-    remove: function remove$$1 (vnode, rm) {
-      /* istanbul ignore else */
-      if (vnode.data.show !== true) {
-        leave(vnode, rm);
-      } else {
-        rm();
-      }
-    }
-  } : {};
-
-  var platformModules = [
-    attrs,
-    klass,
-    events,
-    domProps,
-    style,
-    transition
-  ];
-
-  /*  */
-
-  // the directive module should be applied last, after all
-  // built-in modules have been applied.
-  var modules = platformModules.concat(baseModules);
-
-  var patch = createPatchFunction({ nodeOps: nodeOps, modules: modules });
-
-  /**
-   * Not type checking this file because flow doesn't like attaching
-   * properties to Elements.
-   */
-
-  /* istanbul ignore if */
-  if (isIE9) {
-    // http://www.matts411.com/post/internet-explorer-9-oninput/
-    document.addEventListener('selectionchange', function () {
-      var el = document.activeElement;
-      if (el && el.vmodel) {
-        trigger(el, 'input');
-      }
-    });
-  }
-
-  var directive = {
-    inserted: function inserted (el, binding, vnode, oldVnode) {
-      if (vnode.tag === 'select') {
-        // #6903
-        if (oldVnode.elm && !oldVnode.elm._vOptions) {
-          mergeVNodeHook(vnode, 'postpatch', function () {
-            directive.componentUpdated(el, binding, vnode);
-          });
-        } else {
-          setSelected(el, binding, vnode.context);
-        }
-        el._vOptions = [].map.call(el.options, getValue);
-      } else if (vnode.tag === 'textarea' || isTextInputType(el.type)) {
-        el._vModifiers = binding.modifiers;
-        if (!binding.modifiers.lazy) {
-          el.addEventListener('compositionstart', onCompositionStart);
-          el.addEventListener('compositionend', onCompositionEnd);
-          // Safari < 10.2 & UIWebView doesn't fire compositionend when
-          // switching focus before confirming composition choice
-          // this also fixes the issue where some browsers e.g. iOS Chrome
-          // fires "change" instead of "input" on autocomplete.
-          el.addEventListener('change', onCompositionEnd);
-          /* istanbul ignore if */
-          if (isIE9) {
-            el.vmodel = true;
-          }
-        }
-      }
-    },
-
-    componentUpdated: function componentUpdated (el, binding, vnode) {
-      if (vnode.tag === 'select') {
-        setSelected(el, binding, vnode.context);
-        // in case the options rendered by v-for have changed,
-        // it's possible that the value is out-of-sync with the rendered options.
-        // detect such cases and filter out values that no longer has a matching
-        // option in the DOM.
-        var prevOptions = el._vOptions;
-        var curOptions = el._vOptions = [].map.call(el.options, getValue);
-        if (curOptions.some(function (o, i) { return !looseEqual(o, prevOptions[i]); })) {
-          // trigger change event if
-          // no matching option found for at least one value
-          var needReset = el.multiple
-            ? binding.value.some(function (v) { return hasNoMatchingOption(v, curOptions); })
-            : binding.value !== binding.oldValue && hasNoMatchingOption(binding.value, curOptions);
-          if (needReset) {
-            trigger(el, 'change');
-          }
-        }
-      }
-    }
-  };
-
-  function setSelected (el, binding, vm) {
-    actuallySetSelected(el, binding, vm);
-    /* istanbul ignore if */
-    if (isIE || isEdge) {
-      setTimeout(function () {
-        actuallySetSelected(el, binding, vm);
-      }, 0);
-    }
-  }
-
-  function actuallySetSelected (el, binding, vm) {
-    var value = binding.value;
-    var isMultiple = el.multiple;
-    if (isMultiple && !Array.isArray(value)) {
-      warn(
-        "<select multiple v-model=\"" + (binding.expression) + "\"> " +
-        "expects an Array value for its binding, but got " + (Object.prototype.toString.call(value).slice(8, -1)),
-        vm
-      );
-      return
-    }
-    var selected, option;
-    for (var i = 0, l = el.options.length; i < l; i++) {
-      option = el.options[i];
-      if (isMultiple) {
-        selected = looseIndexOf(value, getValue(option)) > -1;
-        if (option.selected !== selected) {
-          option.selected = selected;
-        }
-      } else {
-        if (looseEqual(getValue(option), value)) {
-          if (el.selectedIndex !== i) {
-            el.selectedIndex = i;
-          }
-          return
-        }
-      }
-    }
-    if (!isMultiple) {
-      el.selectedIndex = -1;
-    }
-  }
-
-  function hasNoMatchingOption (value, options) {
-    return options.every(function (o) { return !looseEqual(o, value); })
-  }
-
-  function getValue (option) {
-    return '_value' in option
-      ? option._value
-      : option.value
-  }
-
-  function onCompositionStart (e) {
-    e.target.composing = true;
-  }
-
-  function onCompositionEnd (e) {
-    // prevent triggering an input event for no reason
-    if (!e.target.composing) { return }
-    e.target.composing = false;
-    trigger(e.target, 'input');
-  }
-
-  function trigger (el, type) {
-    var e = document.createEvent('HTMLEvents');
-    e.initEvent(type, true, true);
-    el.dispatchEvent(e);
-  }
-
-  /*  */
-
-  // recursively search for possible transition defined inside the component root
-  function locateNode (vnode) {
-    return vnode.componentInstance && (!vnode.data || !vnode.data.transition)
-      ? locateNode(vnode.componentInstance._vnode)
-      : vnode
-  }
-
-  var show = {
-    bind: function bind (el, ref, vnode) {
-      var value = ref.value;
-
-      vnode = locateNode(vnode);
-      var transition$$1 = vnode.data && vnode.data.transition;
-      var originalDisplay = el.__vOriginalDisplay =
-        el.style.display === 'none' ? '' : el.style.display;
-      if (value && transition$$1) {
-        vnode.data.show = true;
-        enter(vnode, function () {
-          el.style.display = originalDisplay;
-        });
-      } else {
-        el.style.display = value ? originalDisplay : 'none';
-      }
-    },
-
-    update: function update (el, ref, vnode) {
-      var value = ref.value;
-      var oldValue = ref.oldValue;
-
-      /* istanbul ignore if */
-      if (!value === !oldValue) { return }
-      vnode = locateNode(vnode);
-      var transition$$1 = vnode.data && vnode.data.transition;
-      if (transition$$1) {
-        vnode.data.show = true;
-        if (value) {
-          enter(vnode, function () {
-            el.style.display = el.__vOriginalDisplay;
-          });
-        } else {
-          leave(vnode, function () {
-            el.style.display = 'none';
-          });
-        }
-      } else {
-        el.style.display = value ? el.__vOriginalDisplay : 'none';
-      }
-    },
-
-    unbind: function unbind (
-      el,
-      binding,
-      vnode,
-      oldVnode,
-      isDestroy
-    ) {
-      if (!isDestroy) {
-        el.style.display = el.__vOriginalDisplay;
-      }
-    }
-  };
-
-  var platformDirectives = {
-    model: directive,
-    show: show
-  };
-
-  /*  */
-
-  var transitionProps = {
-    name: String,
-    appear: Boolean,
-    css: Boolean,
-    mode: String,
-    type: String,
-    enterClass: String,
-    leaveClass: String,
-    enterToClass: String,
-    leaveToClass: String,
-    enterActiveClass: String,
-    leaveActiveClass: String,
-    appearClass: String,
-    appearActiveClass: String,
-    appearToClass: String,
-    duration: [Number, String, Object]
-  };
-
-  // in case the child is also an abstract component, e.g. <keep-alive>
-  // we want to recursively retrieve the real component to be rendered
-  function getRealChild (vnode) {
-    var compOptions = vnode && vnode.componentOptions;
-    if (compOptions && compOptions.Ctor.options.abstract) {
-      return getRealChild(getFirstComponentChild(compOptions.children))
-    } else {
-      return vnode
-    }
-  }
-
-  function extractTransitionData (comp) {
-    var data = {};
-    var options = comp.$options;
-    // props
-    for (var key in options.propsData) {
-      data[key] = comp[key];
-    }
-    // events.
-    // extract listeners and pass them directly to the transition methods
-    var listeners = options._parentListeners;
-    for (var key$1 in listeners) {
-      data[camelize(key$1)] = listeners[key$1];
-    }
-    return data
-  }
-
-  function placeholder (h, rawChild) {
-    if (/\d-keep-alive$/.test(rawChild.tag)) {
-      return h('keep-alive', {
-        props: rawChild.componentOptions.propsData
-      })
-    }
-  }
-
-  function hasParentTransition (vnode) {
-    while ((vnode = vnode.parent)) {
-      if (vnode.data.transition) {
-        return true
-      }
-    }
-  }
-
-  function isSameChild (child, oldChild) {
-    return oldChild.key === child.key && oldChild.tag === child.tag
-  }
-
-  var isNotTextNode = function (c) { return c.tag || isAsyncPlaceholder(c); };
-
-  var isVShowDirective = function (d) { return d.name === 'show'; };
-
-  var Transition = {
-    name: 'transition',
-    props: transitionProps,
-    abstract: true,
-
-    render: function render (h) {
-      var this$1 = this;
-
-      var children = this.$slots.default;
-      if (!children) {
-        return
-      }
-
-      // filter out text nodes (possible whitespaces)
-      children = children.filter(isNotTextNode);
-      /* istanbul ignore if */
-      if (!children.length) {
-        return
-      }
-
-      // warn multiple elements
-      if (children.length > 1) {
-        warn(
-          '<transition> can only be used on a single element. Use ' +
-          '<transition-group> for lists.',
-          this.$parent
-        );
-      }
-
-      var mode = this.mode;
-
-      // warn invalid mode
-      if (mode && mode !== 'in-out' && mode !== 'out-in'
-      ) {
-        warn(
-          'invalid <transition> mode: ' + mode,
-          this.$parent
-        );
-      }
-
-      var rawChild = children[0];
-
-      // if this is a component root node and the component's
-      // parent container node also has transition, skip.
-      if (hasParentTransition(this.$vnode)) {
-        return rawChild
-      }
-
-      // apply transition data to child
-      // use getRealChild() to ignore abstract components e.g. keep-alive
-      var child = getRealChild(rawChild);
-      /* istanbul ignore if */
-      if (!child) {
-        return rawChild
-      }
-
-      if (this._leaving) {
-        return placeholder(h, rawChild)
-      }
-
-      // ensure a key that is unique to the vnode type and to this transition
-      // component instance. This key will be used to remove pending leaving nodes
-      // during entering.
-      var id = "__transition-" + (this._uid) + "-";
-      child.key = child.key == null
-        ? child.isComment
-          ? id + 'comment'
-          : id + child.tag
-        : isPrimitive(child.key)
-          ? (String(child.key).indexOf(id) === 0 ? child.key : id + child.key)
-          : child.key;
-
-      var data = (child.data || (child.data = {})).transition = extractTransitionData(this);
-      var oldRawChild = this._vnode;
-      var oldChild = getRealChild(oldRawChild);
-
-      // mark v-show
-      // so that the transition module can hand over the control to the directive
-      if (child.data.directives && child.data.directives.some(isVShowDirective)) {
-        child.data.show = true;
-      }
-
-      if (
-        oldChild &&
-        oldChild.data &&
-        !isSameChild(child, oldChild) &&
-        !isAsyncPlaceholder(oldChild) &&
-        // #6687 component root is a comment node
-        !(oldChild.componentInstance && oldChild.componentInstance._vnode.isComment)
-      ) {
-        // replace old child transition data with fresh one
-        // important for dynamic transitions!
-        var oldData = oldChild.data.transition = extend({}, data);
-        // handle transition mode
-        if (mode === 'out-in') {
-          // return placeholder node and queue update when leave finishes
-          this._leaving = true;
-          mergeVNodeHook(oldData, 'afterLeave', function () {
-            this$1._leaving = false;
-            this$1.$forceUpdate();
-          });
-          return placeholder(h, rawChild)
-        } else if (mode === 'in-out') {
-          if (isAsyncPlaceholder(child)) {
-            return oldRawChild
-          }
-          var delayedLeave;
-          var performLeave = function () { delayedLeave(); };
-          mergeVNodeHook(data, 'afterEnter', performLeave);
-          mergeVNodeHook(data, 'enterCancelled', performLeave);
-          mergeVNodeHook(oldData, 'delayLeave', function (leave) { delayedLeave = leave; });
-        }
-      }
-
-      return rawChild
-    }
-  };
-
-  /*  */
-
-  var props = extend({
-    tag: String,
-    moveClass: String
-  }, transitionProps);
-
-  delete props.mode;
-
-  var TransitionGroup = {
-    props: props,
-
-    beforeMount: function beforeMount () {
-      var this$1 = this;
-
-      var update = this._update;
-      this._update = function (vnode, hydrating) {
-        var restoreActiveInstance = setActiveInstance(this$1);
-        // force removing pass
-        this$1.__patch__(
-          this$1._vnode,
-          this$1.kept,
-          false, // hydrating
-          true // removeOnly (!important, avoids unnecessary moves)
-        );
-        this$1._vnode = this$1.kept;
-        restoreActiveInstance();
-        update.call(this$1, vnode, hydrating);
-      };
-    },
-
-    render: function render (h) {
-      var tag = this.tag || this.$vnode.data.tag || 'span';
-      var map = Object.create(null);
-      var prevChildren = this.prevChildren = this.children;
-      var rawChildren = this.$slots.default || [];
-      var children = this.children = [];
-      var transitionData = extractTransitionData(this);
-
-      for (var i = 0; i < rawChildren.length; i++) {
-        var c = rawChildren[i];
-        if (c.tag) {
-          if (c.key != null && String(c.key).indexOf('__vlist') !== 0) {
-            children.push(c);
-            map[c.key] = c
-            ;(c.data || (c.data = {})).transition = transitionData;
-          } else {
-            var opts = c.componentOptions;
-            var name = opts ? (opts.Ctor.options.name || opts.tag || '') : c.tag;
-            warn(("<transition-group> children must be keyed: <" + name + ">"));
-          }
-        }
-      }
-
-      if (prevChildren) {
-        var kept = [];
-        var removed = [];
-        for (var i$1 = 0; i$1 < prevChildren.length; i$1++) {
-          var c$1 = prevChildren[i$1];
-          c$1.data.transition = transitionData;
-          c$1.data.pos = c$1.elm.getBoundingClientRect();
-          if (map[c$1.key]) {
-            kept.push(c$1);
-          } else {
-            removed.push(c$1);
-          }
-        }
-        this.kept = h(tag, null, kept);
-        this.removed = removed;
-      }
-
-      return h(tag, null, children)
-    },
-
-    updated: function updated () {
-      var children = this.prevChildren;
-      var moveClass = this.moveClass || ((this.name || 'v') + '-move');
-      if (!children.length || !this.hasMove(children[0].elm, moveClass)) {
-        return
-      }
-
-      // we divide the work into three loops to avoid mixing DOM reads and writes
-      // in each iteration - which helps prevent layout thrashing.
-      children.forEach(callPendingCbs);
-      children.forEach(recordPosition);
-      children.forEach(applyTranslation);
-
-      // force reflow to put everything in position
-      // assign to this to avoid being removed in tree-shaking
-      // $flow-disable-line
-      this._reflow = document.body.offsetHeight;
-
-      children.forEach(function (c) {
-        if (c.data.moved) {
-          var el = c.elm;
-          var s = el.style;
-          addTransitionClass(el, moveClass);
-          s.transform = s.WebkitTransform = s.transitionDuration = '';
-          el.addEventListener(transitionEndEvent, el._moveCb = function cb (e) {
-            if (e && e.target !== el) {
-              return
-            }
-            if (!e || /transform$/.test(e.propertyName)) {
-              el.removeEventListener(transitionEndEvent, cb);
-              el._moveCb = null;
-              removeTransitionClass(el, moveClass);
-            }
-          });
-        }
-      });
-    },
-
-    methods: {
-      hasMove: function hasMove (el, moveClass) {
-        /* istanbul ignore if */
-        if (!hasTransition) {
-          return false
-        }
-        /* istanbul ignore if */
-        if (this._hasMove) {
-          return this._hasMove
-        }
-        // Detect whether an element with the move class applied has
-        // CSS transitions. Since the element may be inside an entering
-        // transition at this very moment, we make a clone of it and remove
-        // all other transition classes applied to ensure only the move class
-        // is applied.
-        var clone = el.cloneNode();
-        if (el._transitionClasses) {
-          el._transitionClasses.forEach(function (cls) { removeClass(clone, cls); });
-        }
-        addClass(clone, moveClass);
-        clone.style.display = 'none';
-        this.$el.appendChild(clone);
-        var info = getTransitionInfo(clone);
-        this.$el.removeChild(clone);
-        return (this._hasMove = info.hasTransform)
-      }
-    }
-  };
-
-  function callPendingCbs (c) {
-    /* istanbul ignore if */
-    if (c.elm._moveCb) {
-      c.elm._moveCb();
-    }
-    /* istanbul ignore if */
-    if (c.elm._enterCb) {
-      c.elm._enterCb();
-    }
-  }
-
-  function recordPosition (c) {
-    c.data.newPos = c.elm.getBoundingClientRect();
-  }
-
-  function applyTranslation (c) {
-    var oldPos = c.data.pos;
-    var newPos = c.data.newPos;
-    var dx = oldPos.left - newPos.left;
-    var dy = oldPos.top - newPos.top;
-    if (dx || dy) {
-      c.data.moved = true;
-      var s = c.elm.style;
-      s.transform = s.WebkitTransform = "translate(" + dx + "px," + dy + "px)";
-      s.transitionDuration = '0s';
-    }
-  }
-
-  var platformComponents = {
-    Transition: Transition,
-    TransitionGroup: TransitionGroup
-  };
-
-  /*  */
-
-  // install platform specific utils
-  Vue.config.mustUseProp = mustUseProp;
-  Vue.config.isReservedTag = isReservedTag;
-  Vue.config.isReservedAttr = isReservedAttr;
-  Vue.config.getTagNamespace = getTagNamespace;
-  Vue.config.isUnknownElement = isUnknownElement;
-
-  // install platform runtime directives & components
-  extend(Vue.options.directives, platformDirectives);
-  extend(Vue.options.components, platformComponents);
-
-  // install platform patch function
-  Vue.prototype.__patch__ = inBrowser ? patch : noop;
-
-  // public mount method
-  Vue.prototype.$mount = function (
-    el,
-    hydrating
-  ) {
-    el = el && inBrowser ? query(el) : undefined;
-    return mountComponent(this, el, hydrating)
-  };
-
-  // devtools global hook
-  /* istanbul ignore next */
-  if (inBrowser) {
-    setTimeout(function () {
-      if (config.devtools) {
-        if (devtools) {
-          devtools.emit('init', Vue);
-        } else {
-          console[console.info ? 'info' : 'log'](
-            'Download the Vue Devtools extension for a better development experience:\n' +
-            'https://github.com/vuejs/vue-devtools'
-          );
-        }
-      }
-      if (config.productionTip !== false &&
-        typeof console !== 'undefined'
-      ) {
-        console[console.info ? 'info' : 'log'](
-          "You are running Vue in development mode.\n" +
-          "Make sure to turn on production mode when deploying for production.\n" +
-          "See more tips at https://vuejs.org/guide/deployment.html"
-        );
-      }
-    }, 0);
-  }
-
-  /*  */
-
-  var defaultTagRE = /\{\{((?:.|\r?\n)+?)\}\}/g;
-  var regexEscapeRE = /[-.*+?^${}()|[\]\/\\]/g;
-
-  var buildRegex = cached(function (delimiters) {
-    var open = delimiters[0].replace(regexEscapeRE, '\\$&');
-    var close = delimiters[1].replace(regexEscapeRE, '\\$&');
-    return new RegExp(open + '((?:.|\\n)+?)' + close, 'g')
-  });
-
-
-
-  function parseText (
-    text,
-    delimiters
-  ) {
-    var tagRE = delimiters ? buildRegex(delimiters) : defaultTagRE;
-    if (!tagRE.test(text)) {
-      return
-    }
-    var tokens = [];
-    var rawTokens = [];
-    var lastIndex = tagRE.lastIndex = 0;
-    var match, index, tokenValue;
-    while ((match = tagRE.exec(text))) {
-      index = match.index;
-      // push text token
-      if (index > lastIndex) {
-        rawTokens.push(tokenValue = text.slice(lastIndex, index));
-        tokens.push(JSON.stringify(tokenValue));
-      }
-      // tag token
-      var exp = parseFilters(match[1].trim());
-      tokens.push(("_s(" + exp + ")"));
-      rawTokens.push({ '@binding': exp });
-      lastIndex = index + match[0].length;
-    }
-    if (lastIndex < text.length) {
-      rawTokens.push(tokenValue = text.slice(lastIndex));
-      tokens.push(JSON.stringify(tokenValue));
-    }
-    return {
-      expression: tokens.join('+'),
-      tokens: rawTokens
-    }
-  }
-
-  /*  */
-
-  function transformNode (el, options) {
-    var warn = options.warn || baseWarn;
-    var staticClass = getAndRemoveAttr(el, 'class');
-    if (staticClass) {
-      var res = parseText(staticClass, options.delimiters);
-      if (res) {
-        warn(
-          "class=\"" + staticClass + "\": " +
-          'Interpolation inside attributes has been removed. ' +
-          'Use v-bind or the colon shorthand instead. For example, ' +
-          'instead of <div class="{{ val }}">, use <div :class="val">.',
-          el.rawAttrsMap['class']
-        );
-      }
-    }
-    if (staticClass) {
-      el.staticClass = JSON.stringify(staticClass);
-    }
-    var classBinding = getBindingAttr(el, 'class', false /* getStatic */);
-    if (classBinding) {
-      el.classBinding = classBinding;
-    }
-  }
-
-  function genData (el) {
-    var data = '';
-    if (el.staticClass) {
-      data += "staticClass:" + (el.staticClass) + ",";
-    }
-    if (el.classBinding) {
-      data += "class:" + (el.classBinding) + ",";
-    }
-    return data
-  }
-
-  var klass$1 = {
-    staticKeys: ['staticClass'],
-    transformNode: transformNode,
-    genData: genData
-  };
-
-  /*  */
-
-  function transformNode$1 (el, options) {
-    var warn = options.warn || baseWarn;
-    var staticStyle = getAndRemoveAttr(el, 'style');
-    if (staticStyle) {
-      /* istanbul ignore if */
-      {
-        var res = parseText(staticStyle, options.delimiters);
-        if (res) {
-          warn(
-            "style=\"" + staticStyle + "\": " +
-            'Interpolation inside attributes has been removed. ' +
-            'Use v-bind or the colon shorthand instead. For example, ' +
-            'instead of <div style="{{ val }}">, use <div :style="val">.',
-            el.rawAttrsMap['style']
-          );
-        }
-      }
-      el.staticStyle = JSON.stringify(parseStyleText(staticStyle));
-    }
-
-    var styleBinding = getBindingAttr(el, 'style', false /* getStatic */);
-    if (styleBinding) {
-      el.styleBinding = styleBinding;
-    }
-  }
-
-  function genData$1 (el) {
-    var data = '';
-    if (el.staticStyle) {
-      data += "staticStyle:" + (el.staticStyle) + ",";
-    }
-    if (el.styleBinding) {
-      data += "style:(" + (el.styleBinding) + "),";
-    }
-    return data
-  }
-
-  var style$1 = {
-    staticKeys: ['staticStyle'],
-    transformNode: transformNode$1,
-    genData: genData$1
-  };
-
-  /*  */
-
-  var decoder;
-
-  var he = {
-    decode: function decode (html) {
-      decoder = decoder || document.createElement('div');
-      decoder.innerHTML = html;
-      return decoder.textContent
-    }
-  };
-
-  /*  */
-
-  var isUnaryTag = makeMap(
-    'area,base,br,col,embed,frame,hr,img,input,isindex,keygen,' +
-    'link,meta,param,source,track,wbr'
-  );
-
-  // Elements that you can, intentionally, leave open
-  // (and which close themselves)
-  var canBeLeftOpenTag = makeMap(
-    'colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr,source'
-  );
-
-  // HTML5 tags https://html.spec.whatwg.org/multipage/indices.html#elements-3
-  // Phrasing Content https://html.spec.whatwg.org/multipage/dom.html#phrasing-content
-  var isNonPhrasingTag = makeMap(
-    'address,article,aside,base,blockquote,body,caption,col,colgroup,dd,' +
-    'details,dialog,div,dl,dt,fieldset,figcaption,figure,footer,form,' +
-    'h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,legend,li,menuitem,meta,' +
-    'optgroup,option,param,rp,rt,source,style,summary,tbody,td,tfoot,th,thead,' +
-    'title,tr,track'
-  );
-
-  /**
-   * Not type-checking this file because it's mostly vendor code.
-   */
-
-  // Regular Expressions for parsing tags and attributes
-  var attribute = /^\s*([^\s"'<>\/=]+)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/;
-  var dynamicArgAttribute = /^\s*((?:v-[\w-]+:|@|:|#)\[[^=]+\][^\s"'<>\/=]*)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/;
-  var ncname = "[a-zA-Z_][\\-\\.0-9_a-zA-Z" + (unicodeRegExp.source) + "]*";
-  var qnameCapture = "((?:" + ncname + "\\:)?" + ncname + ")";
-  var startTagOpen = new RegExp(("^<" + qnameCapture));
-  var startTagClose = /^\s*(\/?)>/;
-  var endTag = new RegExp(("^<\\/" + qnameCapture + "[^>]*>"));
-  var doctype = /^<!DOCTYPE [^>]+>/i;
-  // #7298: escape - to avoid being pased as HTML comment when inlined in page
-  var comment = /^<!\--/;
-  var conditionalComment = /^<!\[/;
-
-  // Special Elements (can contain anything)
-  var isPlainTextElement = makeMap('script,style,textarea', true);
-  var reCache = {};
-
-  var decodingMap = {
-    '&lt;': '<',
-    '&gt;': '>',
-    '&quot;': '"',
-    '&amp;': '&',
-    '&#10;': '\n',
-    '&#9;': '\t',
-    '&#39;': "'"
-  };
-  var encodedAttr = /&(?:lt|gt|quot|amp|#39);/g;
-  var encodedAttrWithNewLines = /&(?:lt|gt|quot|amp|#39|#10|#9);/g;
-
-  // #5992
-  var isIgnoreNewlineTag = makeMap('pre,textarea', true);
-  var shouldIgnoreFirstNewline = function (tag, html) { return tag && isIgnoreNewlineTag(tag) && html[0] === '\n'; };
-
-  function decodeAttr (value, shouldDecodeNewlines) {
-    var re = shouldDecodeNewlines ? encodedAttrWithNewLines : encodedAttr;
-    return value.replace(re, function (match) { return decodingMap[match]; })
-  }
-
-  function parseHTML (html, options) {
-    var stack = [];
-    var expectHTML = options.expectHTML;
-    var isUnaryTag$$1 = options.isUnaryTag || no;
-    var canBeLeftOpenTag$$1 = options.canBeLeftOpenTag || no;
-    var index = 0;
-    var last, lastTag;
-    while (html) {
-      last = html;
-      // Make sure we're not in a plaintext content element like script/style
-      if (!lastTag || !isPlainTextElement(lastTag)) {
-        var textEnd = html.indexOf('<');
-        if (textEnd === 0) {
-          // Comment:
-          if (comment.test(html)) {
-            var commentEnd = html.indexOf('-->');
-
-            if (commentEnd >= 0) {
-              if (options.shouldKeepComment) {
-                options.comment(html.substring(4, commentEnd), index, index + commentEnd + 3);
-              }
-              advance(commentEnd + 3);
-              continue
-            }
-          }
-
-          // http://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment
-          if (conditionalComment.test(html)) {
-            var conditionalEnd = html.indexOf(']>');
-
-            if (conditionalEnd >= 0) {
-              advance(conditionalEnd + 2);
-              continue
-            }
-          }
-
-          // Doctype:
-          var doctypeMatch = html.match(doctype);
-          if (doctypeMatch) {
-            advance(doctypeMatch[0].length);
-            continue
-          }
-
-          // End tag:
-          var endTagMatch = html.match(endTag);
-          if (endTagMatch) {
-            var curIndex = index;
-            advance(endTagMatch[0].length);
-            parseEndTag(endTagMatch[1], curIndex, index);
-            continue
-          }
-
-          // Start tag:
-          var startTagMatch = parseStartTag();
-          if (startTagMatch) {
-            handleStartTag(startTagMatch);
-            if (shouldIgnoreFirstNewline(startTagMatch.tagName, html)) {
-              advance(1);
-            }
-            continue
-          }
-        }
-
-        var text = (void 0), rest = (void 0), next = (void 0);
-        if (textEnd >= 0) {
-          rest = html.slice(textEnd);
-          while (
-            !endTag.test(rest) &&
-            !startTagOpen.test(rest) &&
-            !comment.test(rest) &&
-            !conditionalComment.test(rest)
-          ) {
-            // < in plain text, be forgiving and treat it as text
-            next = rest.indexOf('<', 1);
-            if (next < 0) { break }
-            textEnd += next;
-            rest = html.slice(textEnd);
-          }
-          text = html.substring(0, textEnd);
-        }
-
-        if (textEnd < 0) {
-          text = html;
-        }
-
-        if (text) {
-          advance(text.length);
-        }
-
-        if (options.chars && text) {
-          options.chars(text, index - text.length, index);
-        }
-      } else {
-        var endTagLength = 0;
-        var stackedTag = lastTag.toLowerCase();
-        var reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)(</' + stackedTag + '[^>]*>)', 'i'));
-        var rest$1 = html.replace(reStackedTag, function (all, text, endTag) {
-          endTagLength = endTag.length;
-          if (!isPlainTextElement(stackedTag) && stackedTag !== 'noscript') {
-            text = text
-              .replace(/<!\--([\s\S]*?)-->/g, '$1') // #7298
-              .replace(/<!\[CDATA\[([\s\S]*?)]]>/g, '$1');
-          }
-          if (shouldIgnoreFirstNewline(stackedTag, text)) {
-            text = text.slice(1);
-          }
-          if (options.chars) {
-            options.chars(text);
-          }
-          return ''
-        });
-        index += html.length - rest$1.length;
-        html = rest$1;
-        parseEndTag(stackedTag, index - endTagLength, index);
-      }
-
-      if (html === last) {
-        options.chars && options.chars(html);
-        if (!stack.length && options.warn) {
-          options.warn(("Mal-formatted tag at end of template: \"" + html + "\""), { start: index + html.length });
-        }
-        break
-      }
-    }
-
-    // Clean up any remaining tags
-    parseEndTag();
-
-    function advance (n) {
-      index += n;
-      html = html.substring(n);
-    }
-
-    function parseStartTag () {
-      var start = html.match(startTagOpen);
-      if (start) {
-        var match = {
-          tagName: start[1],
-          attrs: [],
-          start: index
-        };
-        advance(start[0].length);
-        var end, attr;
-        while (!(end = html.match(startTagClose)) && (attr = html.match(dynamicArgAttribute) || html.match(attribute))) {
-          attr.start = index;
-          advance(attr[0].length);
-          attr.end = index;
-          match.attrs.push(attr);
-        }
-        if (end) {
-          match.unarySlash = end[1];
-          advance(end[0].length);
-          match.end = index;
-          return match
-        }
-      }
-    }
-
-    function handleStartTag (match) {
-      var tagName = match.tagName;
-      var unarySlash = match.unarySlash;
-
-      if (expectHTML) {
-        if (lastTag === 'p' && isNonPhrasingTag(tagName)) {
-          parseEndTag(lastTag);
-        }
-        if (canBeLeftOpenTag$$1(tagName) && lastTag === tagName) {
-          parseEndTag(tagName);
-        }
-      }
-
-      var unary = isUnaryTag$$1(tagName) || !!unarySlash;
-
-      var l = match.attrs.length;
-      var attrs = new Array(l);
-      for (var i = 0; i < l; i++) {
-        var args = match.attrs[i];
-        var value = args[3] || args[4] || args[5] || '';
-        var shouldDecodeNewlines = tagName === 'a' && args[1] === 'href'
-          ? options.shouldDecodeNewlinesForHref
-          : options.shouldDecodeNewlines;
-        attrs[i] = {
-          name: args[1],
-          value: decodeAttr(value, shouldDecodeNewlines)
-        };
-        if (options.outputSourceRange) {
-          attrs[i].start = args.start + args[0].match(/^\s*/).length;
-          attrs[i].end = args.end;
-        }
-      }
-
-      if (!unary) {
-        stack.push({ tag: tagName, lowerCasedTag: tagName.toLowerCase(), attrs: attrs, start: match.start, end: match.end });
-        lastTag = tagName;
-      }
-
-      if (options.start) {
-        options.start(tagName, attrs, unary, match.start, match.end);
-      }
-    }
-
-    function parseEndTag (tagName, start, end) {
-      var pos, lowerCasedTagName;
-      if (start == null) { start = index; }
-      if (end == null) { end = index; }
-
-      // Find the closest opened tag of the same type
-      if (tagName) {
-        lowerCasedTagName = tagName.toLowerCase();
-        for (pos = stack.length - 1; pos >= 0; pos--) {
-          if (stack[pos].lowerCasedTag === lowerCasedTagName) {
-            break
-          }
-        }
-      } else {
-        // If no tag name is provided, clean shop
-        pos = 0;
-      }
-
-      if (pos >= 0) {
-        // Close all the open elements, up the stack
-        for (var i = stack.length - 1; i >= pos; i--) {
-          if (i > pos || !tagName &&
-            options.warn
-          ) {
-            options.warn(
-              ("tag <" + (stack[i].tag) + "> has no matching end tag."),
-              { start: stack[i].start, end: stack[i].end }
-            );
-          }
-          if (options.end) {
-            options.end(stack[i].tag, start, end);
-          }
-        }
-
-        // Remove the open elements from the stack
-        stack.length = pos;
-        lastTag = pos && stack[pos - 1].tag;
-      } else if (lowerCasedTagName === 'br') {
-        if (options.start) {
-          options.start(tagName, [], true, start, end);
-        }
-      } else if (lowerCasedTagName === 'p') {
-        if (options.start) {
-          options.start(tagName, [], false, start, end);
-        }
-        if (options.end) {
-          options.end(tagName, start, end);
-        }
-      }
-    }
-  }
-
-  /*  */
-
-  var onRE = /^@|^v-on:/;
-  var dirRE = /^v-|^@|^:/;
-  var forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/;
-  var forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/;
-  var stripParensRE = /^\(|\)$/g;
-  var dynamicArgRE = /^\[.*\]$/;
-
-  var argRE = /:(.*)$/;
-  var bindRE = /^:|^\.|^v-bind:/;
-  var modifierRE = /\.[^.\]]+(?=[^\]]*$)/g;
-
-  var slotRE = /^v-slot(:|$)|^#/;
-
-  var lineBreakRE = /[\r\n]/;
-  var whitespaceRE$1 = /\s+/g;
-
-  var invalidAttributeRE = /[\s"'<>\/=]/;
-
-  var decodeHTMLCached = cached(he.decode);
-
-  var emptySlotScopeToken = "_empty_";
-
-  // configurable state
-  var warn$2;
-  var delimiters;
-  var transforms;
-  var preTransforms;
-  var postTransforms;
-  var platformIsPreTag;
-  var platformMustUseProp;
-  var platformGetTagNamespace;
-  var maybeComponent;
-
-  function createASTElement (
-    tag,
-    attrs,
-    parent
-  ) {
-    return {
-      type: 1,
-      tag: tag,
-      attrsList: attrs,
-      attrsMap: makeAttrsMap(attrs),
-      rawAttrsMap: {},
-      parent: parent,
-      children: []
-    }
-  }
-
-  /**
-   * Convert HTML string to AST.
-   */
-  function parse (
-    template,
-    options
-  ) {
-    warn$2 = options.warn || baseWarn;
-
-    platformIsPreTag = options.isPreTag || no;
-    platformMustUseProp = options.mustUseProp || no;
-    platformGetTagNamespace = options.getTagNamespace || no;
-    var isReservedTag = options.isReservedTag || no;
-    maybeComponent = function (el) { return !!el.component || !isReservedTag(el.tag); };
-
-    transforms = pluckModuleFunction(options.modules, 'transformNode');
-    preTransforms = pluckModuleFunction(options.modules, 'preTransformNode');
-    postTransforms = pluckModuleFunction(options.modules, 'postTransformNode');
-
-    delimiters = options.delimiters;
-
-    var stack = [];
-    var preserveWhitespace = options.preserveWhitespace !== false;
-    var whitespaceOption = options.whitespace;
-    var root;
-    var currentParent;
-    var inVPre = false;
-    var inPre = false;
-    var warned = false;
-
-    function warnOnce (msg, range) {
-      if (!warned) {
-        warned = true;
-        warn$2(msg, range);
-      }
-    }
-
-    function closeElement (element) {
-      trimEndingWhitespace(element);
-      if (!inVPre && !element.processed) {
-        element = processElement(element, options);
-      }
-      // tree management
-      if (!stack.length && element !== root) {
-        // allow root elements with v-if, v-else-if and v-else
-        if (root.if && (element.elseif || element.else)) {
-          {
-            checkRootConstraints(element);
-          }
-          addIfCondition(root, {
-            exp: element.elseif,
-            block: element
-          });
-        } else {
-          warnOnce(
-            "Component template should contain exactly one root element. " +
-            "If you are using v-if on multiple elements, " +
-            "use v-else-if to chain them instead.",
-            { start: element.start }
-          );
-        }
-      }
-      if (currentParent && !element.forbidden) {
-        if (element.elseif || element.else) {
-          processIfConditions(element, currentParent);
-        } else {
-          if (element.slotScope) {
-            // scoped slot
-            // keep it in the children list so that v-else(-if) conditions can
-            // find it as the prev node.
-            var name = element.slotTarget || '"default"'
-            ;(currentParent.scopedSlots || (currentParent.scopedSlots = {}))[name] = element;
-          }
-          currentParent.children.push(element);
-          element.parent = currentParent;
-        }
-      }
-
-      // final children cleanup
-      // filter out scoped slots
-      element.children = element.children.filter(function (c) { return !(c).slotScope; });
-      // remove trailing whitespace node again
-      trimEndingWhitespace(element);
-
-      // check pre state
-      if (element.pre) {
-        inVPre = false;
-      }
-      if (platformIsPreTag(element.tag)) {
-        inPre = false;
-      }
-      // apply post-transforms
-      for (var i = 0; i < postTransforms.length; i++) {
-        postTransforms[i](element, options);
-      }
-    }
-
-    function trimEndingWhitespace (el) {
-      // remove trailing whitespace node
-      if (!inPre) {
-        var lastNode;
-        while (
-          (lastNode = el.children[el.children.length - 1]) &&
-          lastNode.type === 3 &&
-          lastNode.text === ' '
-        ) {
-          el.children.pop();
-        }
-      }
-    }
-
-    function checkRootConstraints (el) {
-      if (el.tag === 'slot' || el.tag === 'template') {
-        warnOnce(
-          "Cannot use <" + (el.tag) + "> as component root element because it may " +
-          'contain multiple nodes.',
-          { start: el.start }
-        );
-      }
-      if (el.attrsMap.hasOwnProperty('v-for')) {
-        warnOnce(
-          'Cannot use v-for on stateful component root element because ' +
-          'it renders multiple elements.',
-          el.rawAttrsMap['v-for']
-        );
-      }
-    }
-
-    parseHTML(template, {
-      warn: warn$2,
-      expectHTML: options.expectHTML,
-      isUnaryTag: options.isUnaryTag,
-      canBeLeftOpenTag: options.canBeLeftOpenTag,
-      shouldDecodeNewlines: options.shouldDecodeNewlines,
-      shouldDecodeNewlinesForHref: options.shouldDecodeNewlinesForHref,
-      shouldKeepComment: options.comments,
-      outputSourceRange: options.outputSourceRange,
-      start: function start (tag, attrs, unary, start$1, end) {
-        // check namespace.
-        // inherit parent ns if there is one
-        var ns = (currentParent && currentParent.ns) || platformGetTagNamespace(tag);
-
-        // handle IE svg bug
-        /* istanbul ignore if */
-        if (isIE && ns === 'svg') {
-          attrs = guardIESVGBug(attrs);
-        }
-
-        var element = createASTElement(tag, attrs, currentParent);
-        if (ns) {
-          element.ns = ns;
-        }
-
-        {
-          if (options.outputSourceRange) {
-            element.start = start$1;
-            element.end = end;
-            element.rawAttrsMap = element.attrsList.reduce(function (cumulated, attr) {
-              cumulated[attr.name] = attr;
-              return cumulated
-            }, {});
-          }
-          attrs.forEach(function (attr) {
-            if (invalidAttributeRE.test(attr.name)) {
-              warn$2(
-                "Invalid dynamic argument expression: attribute names cannot contain " +
-                "spaces, quotes, <, >, / or =.",
-                {
-                  start: attr.start + attr.name.indexOf("["),
-                  end: attr.start + attr.name.length
-                }
-              );
-            }
-          });
-        }
-
-        if (isForbiddenTag(element) && !isServerRendering()) {
-          element.forbidden = true;
-          warn$2(
-            'Templates should only be responsible for mapping the state to the ' +
-            'UI. Avoid placing tags with side-effects in your templates, such as ' +
-            "<" + tag + ">" + ', as they will not be parsed.',
-            { start: element.start }
-          );
-        }
-
-        // apply pre-transforms
-        for (var i = 0; i < preTransforms.length; i++) {
-          element = preTransforms[i](element, options) || element;
-        }
-
-        if (!inVPre) {
-          processPre(element);
-          if (element.pre) {
-            inVPre = true;
-          }
-        }
-        if (platformIsPreTag(element.tag)) {
-          inPre = true;
-        }
-        if (inVPre) {
-          processRawAttrs(element);
-        } else if (!element.processed) {
-          // structural directives
-          processFor(element);
-          processIf(element);
-          processOnce(element);
-        }
-
-        if (!root) {
-          root = element;
-          {
-            checkRootConstraints(root);
-          }
-        }
-
-        if (!unary) {
-          currentParent = element;
-          stack.push(element);
-        } else {
-          closeElement(element);
-        }
-      },
-
-      end: function end (tag, start, end$1) {
-        var element = stack[stack.length - 1];
-        // pop stack
-        stack.length -= 1;
-        currentParent = stack[stack.length - 1];
-        if (options.outputSourceRange) {
-          element.end = end$1;
-        }
-        closeElement(element);
-      },
-
-      chars: function chars (text, start, end) {
-        if (!currentParent) {
-          {
-            if (text === template) {
-              warnOnce(
-                'Component template requires a root element, rather than just text.',
-                { start: start }
-              );
-            } else if ((text = text.trim())) {
-              warnOnce(
-                ("text \"" + text + "\" outside root element will be ignored."),
-                { start: start }
-              );
-            }
-          }
-          return
-        }
-        // IE textarea placeholder bug
-        /* istanbul ignore if */
-        if (isIE &&
-          currentParent.tag === 'textarea' &&
-          currentParent.attrsMap.placeholder === text
-        ) {
-          return
-        }
-        var children = currentParent.children;
-        if (inPre || text.trim()) {
-          text = isTextTag(currentParent) ? text : decodeHTMLCached(text);
-        } else if (!children.length) {
-          // remove the whitespace-only node right after an opening tag
-          text = '';
-        } else if (whitespaceOption) {
-          if (whitespaceOption === 'condense') {
-            // in condense mode, remove the whitespace node if it contains
-            // line break, otherwise condense to a single space
-            text = lineBreakRE.test(text) ? '' : ' ';
-          } else {
-            text = ' ';
-          }
-        } else {
-          text = preserveWhitespace ? ' ' : '';
-        }
-        if (text) {
-          if (!inPre && whitespaceOption === 'condense') {
-            // condense consecutive whitespaces into single space
-            text = text.replace(whitespaceRE$1, ' ');
-          }
-          var res;
-          var child;
-          if (!inVPre && text !== ' ' && (res = parseText(text, delimiters))) {
-            child = {
-              type: 2,
-              expression: res.expression,
-              tokens: res.tokens,
-              text: text
-            };
-          } else if (text !== ' ' || !children.length || children[children.length - 1].text !== ' ') {
-            child = {
-              type: 3,
-              text: text
-            };
-          }
-          if (child) {
-            if (options.outputSourceRange) {
-              child.start = start;
-              child.end = end;
-            }
-            children.push(child);
-          }
-        }
-      },
-      comment: function comment (text, start, end) {
-        // adding anyting as a sibling to the root node is forbidden
-        // comments should still be allowed, but ignored
-        if (currentParent) {
-          var child = {
-            type: 3,
-            text: text,
-            isComment: true
-          };
-          if (options.outputSourceRange) {
-            child.start = start;
-            child.end = end;
-          }
-          currentParent.children.push(child);
-        }
-      }
-    });
-    return root
-  }
-
-  function processPre (el) {
-    if (getAndRemoveAttr(el, 'v-pre') != null) {
-      el.pre = true;
-    }
-  }
-
-  function processRawAttrs (el) {
-    var list = el.attrsList;
-    var len = list.length;
-    if (len) {
-      var attrs = el.attrs = new Array(len);
-      for (var i = 0; i < len; i++) {
-        attrs[i] = {
-          name: list[i].name,
-          value: JSON.stringify(list[i].value)
-        };
-        if (list[i].start != null) {
-          attrs[i].start = list[i].start;
-          attrs[i].end = list[i].end;
-        }
-      }
-    } else if (!el.pre) {
-      // non root node in pre blocks with no attributes
-      el.plain = true;
-    }
-  }
-
-  function processElement (
-    element,
-    options
-  ) {
-    processKey(element);
-
-    // determine whether this is a plain element after
-    // removing structural attributes
-    element.plain = (
-      !element.key &&
-      !element.scopedSlots &&
-      !element.attrsList.length
-    );
-
-    processRef(element);
-    processSlotContent(element);
-    processSlotOutlet(element);
-    processComponent(element);
-    for (var i = 0; i < transforms.length; i++) {
-      element = transforms[i](element, options) || element;
-    }
-    processAttrs(element);
-    return element
-  }
-
-  function processKey (el) {
-    var exp = getBindingAttr(el, 'key');
-    if (exp) {
-      {
-        if (el.tag === 'template') {
-          warn$2(
-            "<template> cannot be keyed. Place the key on real elements instead.",
-            getRawBindingAttr(el, 'key')
-          );
-        }
-        if (el.for) {
-          var iterator = el.iterator2 || el.iterator1;
-          var parent = el.parent;
-          if (iterator && iterator === exp && parent && parent.tag === 'transition-group') {
-            warn$2(
-              "Do not use v-for index as key on <transition-group> children, " +
-              "this is the same as not using keys.",
-              getRawBindingAttr(el, 'key'),
-              true /* tip */
-            );
-          }
-        }
-      }
-      el.key = exp;
-    }
-  }
-
-  function processRef (el) {
-    var ref = getBindingAttr(el, 'ref');
-    if (ref) {
-      el.ref = ref;
-      el.refInFor = checkInFor(el);
-    }
-  }
-
-  function processFor (el) {
-    var exp;
-    if ((exp = getAndRemoveAttr(el, 'v-for'))) {
-      var res = parseFor(exp);
-      if (res) {
-        extend(el, res);
-      } else {
-        warn$2(
-          ("Invalid v-for expression: " + exp),
-          el.rawAttrsMap['v-for']
-        );
-      }
-    }
-  }
-
-
-
-  function parseFor (exp) {
-    var inMatch = exp.match(forAliasRE);
-    if (!inMatch) { return }
-    var res = {};
-    res.for = inMatch[2].trim();
-    var alias = inMatch[1].trim().replace(stripParensRE, '');
-    var iteratorMatch = alias.match(forIteratorRE);
-    if (iteratorMatch) {
-      res.alias = alias.replace(forIteratorRE, '').trim();
-      res.iterator1 = iteratorMatch[1].trim();
-      if (iteratorMatch[2]) {
-        res.iterator2 = iteratorMatch[2].trim();
-      }
-    } else {
-      res.alias = alias;
-    }
-    return res
-  }
-
-  function processIf (el) {
-    var exp = getAndRemoveAttr(el, 'v-if');
-    if (exp) {
-      el.if = exp;
-      addIfCondition(el, {
-        exp: exp,
-        block: el
-      });
-    } else {
-      if (getAndRemoveAttr(el, 'v-else') != null) {
-        el.else = true;
-      }
-      var elseif = getAndRemoveAttr(el, 'v-else-if');
-      if (elseif) {
-        el.elseif = elseif;
-      }
-    }
-  }
-
-  function processIfConditions (el, parent) {
-    var prev = findPrevElement(parent.children);
-    if (prev && prev.if) {
-      addIfCondition(prev, {
-        exp: el.elseif,
-        block: el
-      });
-    } else {
-      warn$2(
-        "v-" + (el.elseif ? ('else-if="' + el.elseif + '"') : 'else') + " " +
-        "used on element <" + (el.tag) + "> without corresponding v-if.",
-        el.rawAttrsMap[el.elseif ? 'v-else-if' : 'v-else']
-      );
-    }
-  }
-
-  function findPrevElement (children) {
-    var i = children.length;
-    while (i--) {
-      if (children[i].type === 1) {
-        return children[i]
-      } else {
-        if (children[i].text !== ' ') {
-          warn$2(
-            "text \"" + (children[i].text.trim()) + "\" between v-if and v-else(-if) " +
-            "will be ignored.",
-            children[i]
-          );
-        }
-        children.pop();
-      }
-    }
-  }
-
-  function addIfCondition (el, condition) {
-    if (!el.ifConditions) {
-      el.ifConditions = [];
-    }
-    el.ifConditions.push(condition);
-  }
-
-  function processOnce (el) {
-    var once$$1 = getAndRemoveAttr(el, 'v-once');
-    if (once$$1 != null) {
-      el.once = true;
-    }
-  }
-
-  // handle content being passed to a component as slot,
-  // e.g. <template slot="xxx">, <div slot-scope="xxx">
-  function processSlotContent (el) {
-    var slotScope;
-    if (el.tag === 'template') {
-      slotScope = getAndRemoveAttr(el, 'scope');
-      /* istanbul ignore if */
-      if (slotScope) {
-        warn$2(
-          "the \"scope\" attribute for scoped slots have been deprecated and " +
-          "replaced by \"slot-scope\" since 2.5. The new \"slot-scope\" attribute " +
-          "can also be used on plain elements in addition to <template> to " +
-          "denote scoped slots.",
-          el.rawAttrsMap['scope'],
-          true
-        );
-      }
-      el.slotScope = slotScope || getAndRemoveAttr(el, 'slot-scope');
-    } else if ((slotScope = getAndRemoveAttr(el, 'slot-scope'))) {
-      /* istanbul ignore if */
-      if (el.attrsMap['v-for']) {
-        warn$2(
-          "Ambiguous combined usage of slot-scope and v-for on <" + (el.tag) + "> " +
-          "(v-for takes higher priority). Use a wrapper <template> for the " +
-          "scoped slot to make it clearer.",
-          el.rawAttrsMap['slot-scope'],
-          true
-        );
-      }
-      el.slotScope = slotScope;
-    }
-
-    // slot="xxx"
-    var slotTarget = getBindingAttr(el, 'slot');
-    if (slotTarget) {
-      el.slotTarget = slotTarget === '""' ? '"default"' : slotTarget;
-      el.slotTargetDynamic = !!(el.attrsMap[':slot'] || el.attrsMap['v-bind:slot']);
-      // preserve slot as an attribute for native shadow DOM compat
-      // only for non-scoped slots.
-      if (el.tag !== 'template' && !el.slotScope) {
-        addAttr(el, 'slot', slotTarget, getRawBindingAttr(el, 'slot'));
-      }
-    }
-
-    // 2.6 v-slot syntax
-    {
-      if (el.tag === 'template') {
-        // v-slot on <template>
-        var slotBinding = getAndRemoveAttrByRegex(el, slotRE);
-        if (slotBinding) {
-          {
-            if (el.slotTarget || el.slotScope) {
-              warn$2(
-                "Unexpected mixed usage of different slot syntaxes.",
-                el
-              );
-            }
-            if (el.parent && !maybeComponent(el.parent)) {
-              warn$2(
-                "<template v-slot> can only appear at the root level inside " +
-                "the receiving the component",
-                el
-              );
-            }
-          }
-          var ref = getSlotName(slotBinding);
-          var name = ref.name;
-          var dynamic = ref.dynamic;
-          el.slotTarget = name;
-          el.slotTargetDynamic = dynamic;
-          el.slotScope = slotBinding.value || emptySlotScopeToken; // force it into a scoped slot for perf
-        }
-      } else {
-        // v-slot on component, denotes default slot
-        var slotBinding$1 = getAndRemoveAttrByRegex(el, slotRE);
-        if (slotBinding$1) {
-          {
-            if (!maybeComponent(el)) {
-              warn$2(
-                "v-slot can only be used on components or <template>.",
-                slotBinding$1
-              );
-            }
-            if (el.slotScope || el.slotTarget) {
-              warn$2(
-                "Unexpected mixed usage of different slot syntaxes.",
-                el
-              );
-            }
-            if (el.scopedSlots) {
-              warn$2(
-                "To avoid scope ambiguity, the default slot should also use " +
-                "<template> syntax when there are other named slots.",
-                slotBinding$1
-              );
-            }
-          }
-          // add the component's children to its default slot
-          var slots = el.scopedSlots || (el.scopedSlots = {});
-          var ref$1 = getSlotName(slotBinding$1);
-          var name$1 = ref$1.name;
-          var dynamic$1 = ref$1.dynamic;
-          var slotContainer = slots[name$1] = createASTElement('template', [], el);
-          slotContainer.slotTarget = name$1;
-          slotContainer.slotTargetDynamic = dynamic$1;
-          slotContainer.children = el.children.filter(function (c) {
-            if (!c.slotScope) {
-              c.parent = slotContainer;
-              return true
-            }
-          });
-          slotContainer.slotScope = slotBinding$1.value || emptySlotScopeToken;
-          // remove children as they are returned from scopedSlots now
-          el.children = [];
-          // mark el non-plain so data gets generated
-          el.plain = false;
-        }
-      }
-    }
-  }
-
-  function getSlotName (binding) {
-    var name = binding.name.replace(slotRE, '');
-    if (!name) {
-      if (binding.name[0] !== '#') {
-        name = 'default';
-      } else {
-        warn$2(
-          "v-slot shorthand syntax requires a slot name.",
-          binding
-        );
-      }
-    }
-    return dynamicArgRE.test(name)
-      // dynamic [name]
-      ? { name: name.slice(1, -1), dynamic: true }
-      // static name
-      : { name: ("\"" + name + "\""), dynamic: false }
-  }
-
-  // handle <slot/> outlets
-  function processSlotOutlet (el) {
-    if (el.tag === 'slot') {
-      el.slotName = getBindingAttr(el, 'name');
-      if (el.key) {
-        warn$2(
-          "`key` does not work on <slot> because slots are abstract outlets " +
-          "and can possibly expand into multiple elements. " +
-          "Use the key on a wrapping element instead.",
-          getRawBindingAttr(el, 'key')
-        );
-      }
-    }
-  }
-
-  function processComponent (el) {
-    var binding;
-    if ((binding = getBindingAttr(el, 'is'))) {
-      el.component = binding;
-    }
-    if (getAndRemoveAttr(el, 'inline-template') != null) {
-      el.inlineTemplate = true;
-    }
-  }
-
-  function processAttrs (el) {
-    var list = el.attrsList;
-    var i, l, name, rawName, value, modifiers, syncGen, isDynamic;
-    for (i = 0, l = list.length; i < l; i++) {
-      name = rawName = list[i].name;
-      value = list[i].value;
-      if (dirRE.test(name)) {
-        // mark element as dynamic
-        el.hasBindings = true;
-        // modifiers
-        modifiers = parseModifiers(name.replace(dirRE, ''));
-        // support .foo shorthand syntax for the .prop modifier
-        if (modifiers) {
-          name = name.replace(modifierRE, '');
-        }
-        if (bindRE.test(name)) { // v-bind
-          name = name.replace(bindRE, '');
-          value = parseFilters(value);
-          isDynamic = dynamicArgRE.test(name);
-          if (isDynamic) {
-            name = name.slice(1, -1);
-          }
-          if (
-            value.trim().length === 0
-          ) {
-            warn$2(
-              ("The value for a v-bind expression cannot be empty. Found in \"v-bind:" + name + "\"")
-            );
-          }
-          if (modifiers) {
-            if (modifiers.prop && !isDynamic) {
-              name = camelize(name);
-              if (name === 'innerHtml') { name = 'innerHTML'; }
-            }
-            if (modifiers.camel && !isDynamic) {
-              name = camelize(name);
-            }
-            if (modifiers.sync) {
-              syncGen = genAssignmentCode(value, "$event");
-              if (!isDynamic) {
-                addHandler(
-                  el,
-                  ("update:" + (camelize(name))),
-                  syncGen,
-                  null,
-                  false,
-                  warn$2,
-                  list[i]
-                );
-                if (hyphenate(name) !== camelize(name)) {
-                  addHandler(
-                    el,
-                    ("update:" + (hyphenate(name))),
-                    syncGen,
-                    null,
-                    false,
-                    warn$2,
-                    list[i]
-                  );
-                }
-              } else {
-                // handler w/ dynamic event name
-                addHandler(
-                  el,
-                  ("\"update:\"+(" + name + ")"),
-                  syncGen,
-                  null,
-                  false,
-                  warn$2,
-                  list[i],
-                  true // dynamic
-                );
-              }
-            }
-          }
-          if ((modifiers && modifiers.prop) || (
-            !el.component && platformMustUseProp(el.tag, el.attrsMap.type, name)
-          )) {
-            addProp(el, name, value, list[i], isDynamic);
-          } else {
-            addAttr(el, name, value, list[i], isDynamic);
-          }
-        } else if (onRE.test(name)) { // v-on
-          name = name.replace(onRE, '');
-          isDynamic = dynamicArgRE.test(name);
-          if (isDynamic) {
-            name = name.slice(1, -1);
-          }
-          addHandler(el, name, value, modifiers, false, warn$2, list[i], isDynamic);
-        } else { // normal directives
-          name = name.replace(dirRE, '');
-          // parse arg
-          var argMatch = name.match(argRE);
-          var arg = argMatch && argMatch[1];
-          isDynamic = false;
-          if (arg) {
-            name = name.slice(0, -(arg.length + 1));
-            if (dynamicArgRE.test(arg)) {
-              arg = arg.slice(1, -1);
-              isDynamic = true;
-            }
-          }
-          addDirective(el, name, rawName, value, arg, isDynamic, modifiers, list[i]);
-          if (name === 'model') {
-            checkForAliasModel(el, value);
-          }
-        }
-      } else {
-        // literal attribute
-        {
-          var res = parseText(value, delimiters);
-          if (res) {
-            warn$2(
-              name + "=\"" + value + "\": " +
-              'Interpolation inside attributes has been removed. ' +
-              'Use v-bind or the colon shorthand instead. For example, ' +
-              'instead of <div id="{{ val }}">, use <div :id="val">.',
-              list[i]
-            );
-          }
-        }
-        addAttr(el, name, JSON.stringify(value), list[i]);
-        // #6887 firefox doesn't update muted state if set via attribute
-        // even immediately after element creation
-        if (!el.component &&
-            name === 'muted' &&
-            platformMustUseProp(el.tag, el.attrsMap.type, name)) {
-          addProp(el, name, 'true', list[i]);
-        }
-      }
-    }
-  }
-
-  function checkInFor (el) {
-    var parent = el;
-    while (parent) {
-      if (parent.for !== undefined) {
-        return true
-      }
-      parent = parent.parent;
-    }
-    return false
-  }
-
-  function parseModifiers (name) {
-    var match = name.match(modifierRE);
-    if (match) {
-      var ret = {};
-      match.forEach(function (m) { ret[m.slice(1)] = true; });
-      return ret
-    }
-  }
-
-  function makeAttrsMap (attrs) {
-    var map = {};
-    for (var i = 0, l = attrs.length; i < l; i++) {
-      if (
-        map[attrs[i].name] && !isIE && !isEdge
-      ) {
-        warn$2('duplicate attribute: ' + attrs[i].name, attrs[i]);
-      }
-      map[attrs[i].name] = attrs[i].value;
-    }
-    return map
-  }
-
-  // for script (e.g. type="x/template") or style, do not decode content
-  function isTextTag (el) {
-    return el.tag === 'script' || el.tag === 'style'
-  }
-
-  function isForbiddenTag (el) {
-    return (
-      el.tag === 'style' ||
-      (el.tag === 'script' && (
-        !el.attrsMap.type ||
-        el.attrsMap.type === 'text/javascript'
-      ))
-    )
-  }
-
-  var ieNSBug = /^xmlns:NS\d+/;
-  var ieNSPrefix = /^NS\d+:/;
-
-  /* istanbul ignore next */
-  function guardIESVGBug (attrs) {
-    var res = [];
-    for (var i = 0; i < attrs.length; i++) {
-      var attr = attrs[i];
-      if (!ieNSBug.test(attr.name)) {
-        attr.name = attr.name.replace(ieNSPrefix, '');
-        res.push(attr);
-      }
-    }
-    return res
-  }
-
-  function checkForAliasModel (el, value) {
-    var _el = el;
-    while (_el) {
-      if (_el.for && _el.alias === value) {
-        warn$2(
-          "<" + (el.tag) + " v-model=\"" + value + "\">: " +
-          "You are binding v-model directly to a v-for iteration alias. " +
-          "This will not be able to modify the v-for source array because " +
-          "writing to the alias is like modifying a function local variable. " +
-          "Consider using an array of objects and use v-model on an object property instead.",
-          el.rawAttrsMap['v-model']
-        );
-      }
-      _el = _el.parent;
-    }
-  }
-
-  /*  */
-
-  function preTransformNode (el, options) {
-    if (el.tag === 'input') {
-      var map = el.attrsMap;
-      if (!map['v-model']) {
-        return
-      }
-
-      var typeBinding;
-      if (map[':type'] || map['v-bind:type']) {
-        typeBinding = getBindingAttr(el, 'type');
-      }
-      if (!map.type && !typeBinding && map['v-bind']) {
-        typeBinding = "(" + (map['v-bind']) + ").type";
-      }
-
-      if (typeBinding) {
-        var ifCondition = getAndRemoveAttr(el, 'v-if', true);
-        var ifConditionExtra = ifCondition ? ("&&(" + ifCondition + ")") : "";
-        var hasElse = getAndRemoveAttr(el, 'v-else', true) != null;
-        var elseIfCondition = getAndRemoveAttr(el, 'v-else-if', true);
-        // 1. checkbox
-        var branch0 = cloneASTElement(el);
-        // process for on the main node
-        processFor(branch0);
-        addRawAttr(branch0, 'type', 'checkbox');
-        processElement(branch0, options);
-        branch0.processed = true; // prevent it from double-processed
-        branch0.if = "(" + typeBinding + ")==='checkbox'" + ifConditionExtra;
-        addIfCondition(branch0, {
-          exp: branch0.if,
-          block: branch0
-        });
-        // 2. add radio else-if condition
-        var branch1 = cloneASTElement(el);
-        getAndRemoveAttr(branch1, 'v-for', true);
-        addRawAttr(branch1, 'type', 'radio');
-        processElement(branch1, options);
-        addIfCondition(branch0, {
-          exp: "(" + typeBinding + ")==='radio'" + ifConditionExtra,
-          block: branch1
-        });
-        // 3. other
-        var branch2 = cloneASTElement(el);
-        getAndRemoveAttr(branch2, 'v-for', true);
-        addRawAttr(branch2, ':type', typeBinding);
-        processElement(branch2, options);
-        addIfCondition(branch0, {
-          exp: ifCondition,
-          block: branch2
-        });
-
-        if (hasElse) {
-          branch0.else = true;
-        } else if (elseIfCondition) {
-          branch0.elseif = elseIfCondition;
-        }
-
-        return branch0
-      }
-    }
-  }
-
-  function cloneASTElement (el) {
-    return createASTElement(el.tag, el.attrsList.slice(), el.parent)
-  }
-
-  var model$1 = {
-    preTransformNode: preTransformNode
-  };
-
-  var modules$1 = [
-    klass$1,
-    style$1,
-    model$1
-  ];
-
-  /*  */
-
-  function text (el, dir) {
-    if (dir.value) {
-      addProp(el, 'textContent', ("_s(" + (dir.value) + ")"), dir);
-    }
-  }
-
-  /*  */
-
-  function html (el, dir) {
-    if (dir.value) {
-      addProp(el, 'innerHTML', ("_s(" + (dir.value) + ")"), dir);
-    }
-  }
-
-  var directives$1 = {
-    model: model,
-    text: text,
-    html: html
-  };
-
-  /*  */
-
-  var baseOptions = {
-    expectHTML: true,
-    modules: modules$1,
-    directives: directives$1,
-    isPreTag: isPreTag,
-    isUnaryTag: isUnaryTag,
-    mustUseProp: mustUseProp,
-    canBeLeftOpenTag: canBeLeftOpenTag,
-    isReservedTag: isReservedTag,
-    getTagNamespace: getTagNamespace,
-    staticKeys: genStaticKeys(modules$1)
-  };
-
-  /*  */
-
-  var isStaticKey;
-  var isPlatformReservedTag;
-
-  var genStaticKeysCached = cached(genStaticKeys$1);
-
-  /**
-   * Goal of the optimizer: walk the generated template AST tree
-   * and detect sub-trees that are purely static, i.e. parts of
-   * the DOM that never needs to change.
-   *
-   * Once we detect these sub-trees, we can:
-   *
-   * 1. Hoist them into constants, so that we no longer need to
-   *    create fresh nodes for them on each re-render;
-   * 2. Completely skip them in the patching process.
-   */
-  function optimize (root, options) {
-    if (!root) { return }
-    isStaticKey = genStaticKeysCached(options.staticKeys || '');
-    isPlatformReservedTag = options.isReservedTag || no;
-    // first pass: mark all non-static nodes.
-    markStatic$1(root);
-    // second pass: mark static roots.
-    markStaticRoots(root, false);
-  }
-
-  function genStaticKeys$1 (keys) {
-    return makeMap(
-      'type,tag,attrsList,attrsMap,plain,parent,children,attrs,start,end,rawAttrsMap' +
-      (keys ? ',' + keys : '')
-    )
-  }
-
-  function markStatic$1 (node) {
-    node.static = isStatic(node);
-    if (node.type === 1) {
-      // do not make component slot content static. this avoids
-      // 1. components not able to mutate slot nodes
-      // 2. static slot content fails for hot-reloading
-      if (
-        !isPlatformReservedTag(node.tag) &&
-        node.tag !== 'slot' &&
-        node.attrsMap['inline-template'] == null
-      ) {
-        return
-      }
-      for (var i = 0, l = node.children.length; i < l; i++) {
-        var child = node.children[i];
-        markStatic$1(child);
-        if (!child.static) {
-          node.static = false;
-        }
-      }
-      if (node.ifConditions) {
-        for (var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
-          var block = node.ifConditions[i$1].block;
-          markStatic$1(block);
-          if (!block.static) {
-            node.static = false;
-          }
-        }
-      }
-    }
-  }
-
-  function markStaticRoots (node, isInFor) {
-    if (node.type === 1) {
-      if (node.static || node.once) {
-        node.staticInFor = isInFor;
-      }
-      // For a node to qualify as a static root, it should have children that
-      // are not just static text. Otherwise the cost of hoisting out will
-      // outweigh the benefits and it's better off to just always render it fresh.
-      if (node.static && node.children.length && !(
-        node.children.length === 1 &&
-        node.children[0].type === 3
-      )) {
-        node.staticRoot = true;
-        return
-      } else {
-        node.staticRoot = false;
-      }
-      if (node.children) {
-        for (var i = 0, l = node.children.length; i < l; i++) {
-          markStaticRoots(node.children[i], isInFor || !!node.for);
-        }
-      }
-      if (node.ifConditions) {
-        for (var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
-          markStaticRoots(node.ifConditions[i$1].block, isInFor);
-        }
-      }
-    }
-  }
-
-  function isStatic (node) {
-    if (node.type === 2) { // expression
-      return false
-    }
-    if (node.type === 3) { // text
-      return true
-    }
-    return !!(node.pre || (
-      !node.hasBindings && // no dynamic bindings
-      !node.if && !node.for && // not v-if or v-for or v-else
-      !isBuiltInTag(node.tag) && // not a built-in
-      isPlatformReservedTag(node.tag) && // not a component
-      !isDirectChildOfTemplateFor(node) &&
-      Object.keys(node).every(isStaticKey)
-    ))
-  }
-
-  function isDirectChildOfTemplateFor (node) {
-    while (node.parent) {
-      node = node.parent;
-      if (node.tag !== 'template') {
-        return false
-      }
-      if (node.for) {
-        return true
-      }
-    }
-    return false
-  }
-
-  /*  */
-
-  var fnExpRE = /^([\w$_]+|\([^)]*?\))\s*=>|^function\s*(?:[\w$]+)?\s*\(/;
-  var fnInvokeRE = /\([^)]*?\);*$/;
-  var simplePathRE = /^[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['[^']*?']|\["[^"]*?"]|\[\d+]|\[[A-Za-z_$][\w$]*])*$/;
-
-  // KeyboardEvent.keyCode aliases
-  var keyCodes = {
-    esc: 27,
-    tab: 9,
-    enter: 13,
-    space: 32,
-    up: 38,
-    left: 37,
-    right: 39,
-    down: 40,
-    'delete': [8, 46]
-  };
-
-  // KeyboardEvent.key aliases
-  var keyNames = {
-    // #7880: IE11 and Edge use `Esc` for Escape key name.
-    esc: ['Esc', 'Escape'],
-    tab: 'Tab',
-    enter: 'Enter',
-    // #9112: IE11 uses `Spacebar` for Space key name.
-    space: [' ', 'Spacebar'],
-    // #7806: IE11 uses key names without `Arrow` prefix for arrow keys.
-    up: ['Up', 'ArrowUp'],
-    left: ['Left', 'ArrowLeft'],
-    right: ['Right', 'ArrowRight'],
-    down: ['Down', 'ArrowDown'],
-    // #9112: IE11 uses `Del` for Delete key name.
-    'delete': ['Backspace', 'Delete', 'Del']
-  };
-
-  // #4868: modifiers that prevent the execution of the listener
-  // need to explicitly return null so that we can determine whether to remove
-  // the listener for .once
-  var genGuard = function (condition) { return ("if(" + condition + ")return null;"); };
-
-  var modifierCode = {
-    stop: '$event.stopPropagation();',
-    prevent: '$event.preventDefault();',
-    self: genGuard("$event.target !== $event.currentTarget"),
-    ctrl: genGuard("!$event.ctrlKey"),
-    shift: genGuard("!$event.shiftKey"),
-    alt: genGuard("!$event.altKey"),
-    meta: genGuard("!$event.metaKey"),
-    left: genGuard("'button' in $event && $event.button !== 0"),
-    middle: genGuard("'button' in $event && $event.button !== 1"),
-    right: genGuard("'button' in $event && $event.button !== 2")
-  };
-
-  function genHandlers (
-    events,
-    isNative
-  ) {
-    var prefix = isNative ? 'nativeOn:' : 'on:';
-    var staticHandlers = "";
-    var dynamicHandlers = "";
-    for (var name in events) {
-      var handlerCode = genHandler(events[name]);
-      if (events[name] && events[name].dynamic) {
-        dynamicHandlers += name + "," + handlerCode + ",";
-      } else {
-        staticHandlers += "\"" + name + "\":" + handlerCode + ",";
-      }
-    }
-    staticHandlers = "{" + (staticHandlers.slice(0, -1)) + "}";
-    if (dynamicHandlers) {
-      return prefix + "_d(" + staticHandlers + ",[" + (dynamicHandlers.slice(0, -1)) + "])"
-    } else {
-      return prefix + staticHandlers
-    }
-  }
-
-  function genHandler (handler) {
-    if (!handler) {
-      return 'function(){}'
-    }
-
-    if (Array.isArray(handler)) {
-      return ("[" + (handler.map(function (handler) { return genHandler(handler); }).join(',')) + "]")
-    }
-
-    var isMethodPath = simplePathRE.test(handler.value);
-    var isFunctionExpression = fnExpRE.test(handler.value);
-    var isFunctionInvocation = simplePathRE.test(handler.value.replace(fnInvokeRE, ''));
-
-    if (!handler.modifiers) {
-      if (isMethodPath || isFunctionExpression) {
-        return handler.value
-      }
-      return ("function($event){" + (isFunctionInvocation ? ("return " + (handler.value)) : handler.value) + "}") // inline statement
-    } else {
-      var code = '';
-      var genModifierCode = '';
-      var keys = [];
-      for (var key in handler.modifiers) {
-        if (modifierCode[key]) {
-          genModifierCode += modifierCode[key];
-          // left/right
-          if (keyCodes[key]) {
-            keys.push(key);
-          }
-        } else if (key === 'exact') {
-          var modifiers = (handler.modifiers);
-          genModifierCode += genGuard(
-            ['ctrl', 'shift', 'alt', 'meta']
-              .filter(function (keyModifier) { return !modifiers[keyModifier]; })
-              .map(function (keyModifier) { return ("$event." + keyModifier + "Key"); })
-              .join('||')
-          );
-        } else {
-          keys.push(key);
-        }
-      }
-      if (keys.length) {
-        code += genKeyFilter(keys);
-      }
-      // Make sure modifiers like prevent and stop get executed after key filtering
-      if (genModifierCode) {
-        code += genModifierCode;
-      }
-      var handlerCode = isMethodPath
-        ? ("return " + (handler.value) + "($event)")
-        : isFunctionExpression
-          ? ("return (" + (handler.value) + ")($event)")
-          : isFunctionInvocation
-            ? ("return " + (handler.value))
-            : handler.value;
-      return ("function($event){" + code + handlerCode + "}")
-    }
-  }
-
-  function genKeyFilter (keys) {
-    return (
-      // make sure the key filters only apply to KeyboardEvents
-      // #9441: can't use 'keyCode' in $event because Chrome autofill fires fake
-      // key events that do not have keyCode property...
-      "if(!$event.type.indexOf('key')&&" +
-      (keys.map(genFilterCode).join('&&')) + ")return null;"
-    )
-  }
-
-  function genFilterCode (key) {
-    var keyVal = parseInt(key, 10);
-    if (keyVal) {
-      return ("$event.keyCode!==" + keyVal)
-    }
-    var keyCode = keyCodes[key];
-    var keyName = keyNames[key];
-    return (
-      "_k($event.keyCode," +
-      (JSON.stringify(key)) + "," +
-      (JSON.stringify(keyCode)) + "," +
-      "$event.key," +
-      "" + (JSON.stringify(keyName)) +
-      ")"
-    )
-  }
-
-  /*  */
-
-  function on (el, dir) {
-    if (dir.modifiers) {
-      warn("v-on without argument does not support modifiers.");
-    }
-    el.wrapListeners = function (code) { return ("_g(" + code + "," + (dir.value) + ")"); };
-  }
-
-  /*  */
-
-  function bind$1 (el, dir) {
-    el.wrapData = function (code) {
-      return ("_b(" + code + ",'" + (el.tag) + "'," + (dir.value) + "," + (dir.modifiers && dir.modifiers.prop ? 'true' : 'false') + (dir.modifiers && dir.modifiers.sync ? ',true' : '') + ")")
-    };
-  }
-
-  /*  */
-
-  var baseDirectives = {
-    on: on,
-    bind: bind$1,
-    cloak: noop
-  };
-
-  /*  */
-
-
-
-
-
-  var CodegenState = function CodegenState (options) {
-    this.options = options;
-    this.warn = options.warn || baseWarn;
-    this.transforms = pluckModuleFunction(options.modules, 'transformCode');
-    this.dataGenFns = pluckModuleFunction(options.modules, 'genData');
-    this.directives = extend(extend({}, baseDirectives), options.directives);
-    var isReservedTag = options.isReservedTag || no;
-    this.maybeComponent = function (el) { return !!el.component || !isReservedTag(el.tag); };
-    this.onceId = 0;
-    this.staticRenderFns = [];
-    this.pre = false;
-  };
-
-
-
-  function generate (
-    ast,
-    options
-  ) {
-    var state = new CodegenState(options);
-    var code = ast ? genElement(ast, state) : '_c("div")';
-    return {
-      render: ("with(this){return " + code + "}"),
-      staticRenderFns: state.staticRenderFns
-    }
-  }
-
-  function genElement (el, state) {
-    if (el.parent) {
-      el.pre = el.pre || el.parent.pre;
-    }
-
-    if (el.staticRoot && !el.staticProcessed) {
-      return genStatic(el, state)
-    } else if (el.once && !el.onceProcessed) {
-      return genOnce(el, state)
-    } else if (el.for && !el.forProcessed) {
-      return genFor(el, state)
-    } else if (el.if && !el.ifProcessed) {
-      return genIf(el, state)
-    } else if (el.tag === 'template' && !el.slotTarget && !state.pre) {
-      return genChildren(el, state) || 'void 0'
-    } else if (el.tag === 'slot') {
-      return genSlot(el, state)
-    } else {
-      // component or element
-      var code;
-      if (el.component) {
-        code = genComponent(el.component, el, state);
-      } else {
-        var data;
-        if (!el.plain || (el.pre && state.maybeComponent(el))) {
-          data = genData$2(el, state);
-        }
-
-        var children = el.inlineTemplate ? null : genChildren(el, state, true);
-        code = "_c('" + (el.tag) + "'" + (data ? ("," + data) : '') + (children ? ("," + children) : '') + ")";
-      }
-      // module transforms
-      for (var i = 0; i < state.transforms.length; i++) {
-        code = state.transforms[i](el, code);
-      }
-      return code
-    }
-  }
-
-  // hoist static sub-trees out
-  function genStatic (el, state) {
-    el.staticProcessed = true;
-    // Some elements (templates) need to behave differently inside of a v-pre
-    // node.  All pre nodes are static roots, so we can use this as a location to
-    // wrap a state change and reset it upon exiting the pre node.
-    var originalPreState = state.pre;
-    if (el.pre) {
-      state.pre = el.pre;
-    }
-    state.staticRenderFns.push(("with(this){return " + (genElement(el, state)) + "}"));
-    state.pre = originalPreState;
-    return ("_m(" + (state.staticRenderFns.length - 1) + (el.staticInFor ? ',true' : '') + ")")
-  }
-
-  // v-once
-  function genOnce (el, state) {
-    el.onceProcessed = true;
-    if (el.if && !el.ifProcessed) {
-      return genIf(el, state)
-    } else if (el.staticInFor) {
-      var key = '';
-      var parent = el.parent;
-      while (parent) {
-        if (parent.for) {
-          key = parent.key;
-          break
-        }
-        parent = parent.parent;
-      }
-      if (!key) {
-        state.warn(
-          "v-once can only be used inside v-for that is keyed. ",
-          el.rawAttrsMap['v-once']
-        );
-        return genElement(el, state)
-      }
-      return ("_o(" + (genElement(el, state)) + "," + (state.onceId++) + "," + key + ")")
-    } else {
-      return genStatic(el, state)
-    }
-  }
-
-  function genIf (
-    el,
-    state,
-    altGen,
-    altEmpty
-  ) {
-    el.ifProcessed = true; // avoid recursion
-    return genIfConditions(el.ifConditions.slice(), state, altGen, altEmpty)
-  }
-
-  function genIfConditions (
-    conditions,
-    state,
-    altGen,
-    altEmpty
-  ) {
-    if (!conditions.length) {
-      return altEmpty || '_e()'
-    }
-
-    var condition = conditions.shift();
-    if (condition.exp) {
-      return ("(" + (condition.exp) + ")?" + (genTernaryExp(condition.block)) + ":" + (genIfConditions(conditions, state, altGen, altEmpty)))
-    } else {
-      return ("" + (genTernaryExp(condition.block)))
-    }
-
-    // v-if with v-once should generate code like (a)?_m(0):_m(1)
-    function genTernaryExp (el) {
-      return altGen
-        ? altGen(el, state)
-        : el.once
-          ? genOnce(el, state)
-          : genElement(el, state)
-    }
-  }
-
-  function genFor (
-    el,
-    state,
-    altGen,
-    altHelper
-  ) {
-    var exp = el.for;
-    var alias = el.alias;
-    var iterator1 = el.iterator1 ? ("," + (el.iterator1)) : '';
-    var iterator2 = el.iterator2 ? ("," + (el.iterator2)) : '';
-
-    if (state.maybeComponent(el) &&
-      el.tag !== 'slot' &&
-      el.tag !== 'template' &&
-      !el.key
-    ) {
-      state.warn(
-        "<" + (el.tag) + " v-for=\"" + alias + " in " + exp + "\">: component lists rendered with " +
-        "v-for should have explicit keys. " +
-        "See https://vuejs.org/guide/list.html#key for more info.",
-        el.rawAttrsMap['v-for'],
-        true /* tip */
-      );
-    }
-
-    el.forProcessed = true; // avoid recursion
-    return (altHelper || '_l') + "((" + exp + ")," +
-      "function(" + alias + iterator1 + iterator2 + "){" +
-        "return " + ((altGen || genElement)(el, state)) +
-      '})'
-  }
-
-  function genData$2 (el, state) {
-    var data = '{';
-
-    // directives first.
-    // directives may mutate the el's other properties before they are generated.
-    var dirs = genDirectives(el, state);
-    if (dirs) { data += dirs + ','; }
-
-    // key
-    if (el.key) {
-      data += "key:" + (el.key) + ",";
-    }
-    // ref
-    if (el.ref) {
-      data += "ref:" + (el.ref) + ",";
-    }
-    if (el.refInFor) {
-      data += "refInFor:true,";
-    }
-    // pre
-    if (el.pre) {
-      data += "pre:true,";
-    }
-    // record original tag name for components using "is" attribute
-    if (el.component) {
-      data += "tag:\"" + (el.tag) + "\",";
-    }
-    // module data generation functions
-    for (var i = 0; i < state.dataGenFns.length; i++) {
-      data += state.dataGenFns[i](el);
-    }
-    // attributes
-    if (el.attrs) {
-      data += "attrs:" + (genProps(el.attrs)) + ",";
-    }
-    // DOM props
-    if (el.props) {
-      data += "domProps:" + (genProps(el.props)) + ",";
-    }
-    // event handlers
-    if (el.events) {
-      data += (genHandlers(el.events, false)) + ",";
-    }
-    if (el.nativeEvents) {
-      data += (genHandlers(el.nativeEvents, true)) + ",";
-    }
-    // slot target
-    // only for non-scoped slots
-    if (el.slotTarget && !el.slotScope) {
-      data += "slot:" + (el.slotTarget) + ",";
-    }
-    // scoped slots
-    if (el.scopedSlots) {
-      data += (genScopedSlots(el, el.scopedSlots, state)) + ",";
-    }
-    // component v-model
-    if (el.model) {
-      data += "model:{value:" + (el.model.value) + ",callback:" + (el.model.callback) + ",expression:" + (el.model.expression) + "},";
-    }
-    // inline-template
-    if (el.inlineTemplate) {
-      var inlineTemplate = genInlineTemplate(el, state);
-      if (inlineTemplate) {
-        data += inlineTemplate + ",";
-      }
-    }
-    data = data.replace(/,$/, '') + '}';
-    // v-bind dynamic argument wrap
-    // v-bind with dynamic arguments must be applied using the same v-bind object
-    // merge helper so that class/style/mustUseProp attrs are handled correctly.
-    if (el.dynamicAttrs) {
-      data = "_b(" + data + ",\"" + (el.tag) + "\"," + (genProps(el.dynamicAttrs)) + ")";
-    }
-    // v-bind data wrap
-    if (el.wrapData) {
-      data = el.wrapData(data);
-    }
-    // v-on data wrap
-    if (el.wrapListeners) {
-      data = el.wrapListeners(data);
-    }
-    return data
-  }
-
-  function genDirectives (el, state) {
-    var dirs = el.directives;
-    if (!dirs) { return }
-    var res = 'directives:[';
-    var hasRuntime = false;
-    var i, l, dir, needRuntime;
-    for (i = 0, l = dirs.length; i < l; i++) {
-      dir = dirs[i];
-      needRuntime = true;
-      var gen = state.directives[dir.name];
-      if (gen) {
-        // compile-time directive that manipulates AST.
-        // returns true if it also needs a runtime counterpart.
-        needRuntime = !!gen(el, dir, state.warn);
-      }
-      if (needRuntime) {
-        hasRuntime = true;
-        res += "{name:\"" + (dir.name) + "\",rawName:\"" + (dir.rawName) + "\"" + (dir.value ? (",value:(" + (dir.value) + "),expression:" + (JSON.stringify(dir.value))) : '') + (dir.arg ? (",arg:" + (dir.isDynamicArg ? dir.arg : ("\"" + (dir.arg) + "\""))) : '') + (dir.modifiers ? (",modifiers:" + (JSON.stringify(dir.modifiers))) : '') + "},";
-      }
-    }
-    if (hasRuntime) {
-      return res.slice(0, -1) + ']'
-    }
-  }
-
-  function genInlineTemplate (el, state) {
-    var ast = el.children[0];
-    if (el.children.length !== 1 || ast.type !== 1) {
-      state.warn(
-        'Inline-template components must have exactly one child element.',
-        { start: el.start }
-      );
-    }
-    if (ast && ast.type === 1) {
-      var inlineRenderFns = generate(ast, state.options);
-      return ("inlineTemplate:{render:function(){" + (inlineRenderFns.render) + "},staticRenderFns:[" + (inlineRenderFns.staticRenderFns.map(function (code) { return ("function(){" + code + "}"); }).join(',')) + "]}")
-    }
-  }
-
-  function genScopedSlots (
-    el,
-    slots,
-    state
-  ) {
-    // by default scoped slots are considered "stable", this allows child
-    // components with only scoped slots to skip forced updates from parent.
-    // but in some cases we have to bail-out of this optimization
-    // for example if the slot contains dynamic names, has v-if or v-for on them...
-    var needsForceUpdate = el.for || Object.keys(slots).some(function (key) {
-      var slot = slots[key];
-      return (
-        slot.slotTargetDynamic ||
-        slot.if ||
-        slot.for ||
-        containsSlotChild(slot) // is passing down slot from parent which may be dynamic
-      )
-    });
-
-    // #9534: if a component with scoped slots is inside a conditional branch,
-    // it's possible for the same component to be reused but with different
-    // compiled slot content. To avoid that, we generate a unique key based on
-    // the generated code of all the slot contents.
-    var needsKey = !!el.if;
-
-    // OR when it is inside another scoped slot or v-for (the reactivity may be
-    // disconnected due to the intermediate scope variable)
-    // #9438, #9506
-    // TODO: this can be further optimized by properly analyzing in-scope bindings
-    // and skip force updating ones that do not actually use scope variables.
-    if (!needsForceUpdate) {
-      var parent = el.parent;
-      while (parent) {
-        if (
-          (parent.slotScope && parent.slotScope !== emptySlotScopeToken) ||
-          parent.for
-        ) {
-          needsForceUpdate = true;
-          break
-        }
-        if (parent.if) {
-          needsKey = true;
-        }
-        parent = parent.parent;
-      }
-    }
-
-    var generatedSlots = Object.keys(slots)
-      .map(function (key) { return genScopedSlot(slots[key], state); })
-      .join(',');
-
-    return ("scopedSlots:_u([" + generatedSlots + "]" + (needsForceUpdate ? ",null,true" : "") + (!needsForceUpdate && needsKey ? (",null,false," + (hash(generatedSlots))) : "") + ")")
-  }
-
-  function hash(str) {
-    var hash = 5381;
-    var i = str.length;
-    while(i) {
-      hash = (hash * 33) ^ str.charCodeAt(--i);
-    }
-    return hash >>> 0
-  }
-
-  function containsSlotChild (el) {
-    if (el.type === 1) {
-      if (el.tag === 'slot') {
-        return true
-      }
-      return el.children.some(containsSlotChild)
-    }
-    return false
-  }
-
-  function genScopedSlot (
-    el,
-    state
-  ) {
-    var isLegacySyntax = el.attrsMap['slot-scope'];
-    if (el.if && !el.ifProcessed && !isLegacySyntax) {
-      return genIf(el, state, genScopedSlot, "null")
-    }
-    if (el.for && !el.forProcessed) {
-      return genFor(el, state, genScopedSlot)
-    }
-    var slotScope = el.slotScope === emptySlotScopeToken
-      ? ""
-      : String(el.slotScope);
-    var fn = "function(" + slotScope + "){" +
-      "return " + (el.tag === 'template'
-        ? el.if && isLegacySyntax
-          ? ("(" + (el.if) + ")?" + (genChildren(el, state) || 'undefined') + ":undefined")
-          : genChildren(el, state) || 'undefined'
-        : genElement(el, state)) + "}";
-    // reverse proxy v-slot without scope on this.$slots
-    var reverseProxy = slotScope ? "" : ",proxy:true";
-    return ("{key:" + (el.slotTarget || "\"default\"") + ",fn:" + fn + reverseProxy + "}")
-  }
-
-  function genChildren (
-    el,
-    state,
-    checkSkip,
-    altGenElement,
-    altGenNode
-  ) {
-    var children = el.children;
-    if (children.length) {
-      var el$1 = children[0];
-      // optimize single v-for
-      if (children.length === 1 &&
-        el$1.for &&
-        el$1.tag !== 'template' &&
-        el$1.tag !== 'slot'
-      ) {
-        var normalizationType = checkSkip
-          ? state.maybeComponent(el$1) ? ",1" : ",0"
-          : "";
-        return ("" + ((altGenElement || genElement)(el$1, state)) + normalizationType)
-      }
-      var normalizationType$1 = checkSkip
-        ? getNormalizationType(children, state.maybeComponent)
-        : 0;
-      var gen = altGenNode || genNode;
-      return ("[" + (children.map(function (c) { return gen(c, state); }).join(',')) + "]" + (normalizationType$1 ? ("," + normalizationType$1) : ''))
-    }
-  }
-
-  // determine the normalization needed for the children array.
-  // 0: no normalization needed
-  // 1: simple normalization needed (possible 1-level deep nested array)
-  // 2: full normalization needed
-  function getNormalizationType (
-    children,
-    maybeComponent
-  ) {
-    var res = 0;
-    for (var i = 0; i < children.length; i++) {
-      var el = children[i];
-      if (el.type !== 1) {
-        continue
-      }
-      if (needsNormalization(el) ||
-          (el.ifConditions && el.ifConditions.some(function (c) { return needsNormalization(c.block); }))) {
-        res = 2;
-        break
-      }
-      if (maybeComponent(el) ||
-          (el.ifConditions && el.ifConditions.some(function (c) { return maybeComponent(c.block); }))) {
-        res = 1;
-      }
-    }
-    return res
-  }
-
-  function needsNormalization (el) {
-    return el.for !== undefined || el.tag === 'template' || el.tag === 'slot'
-  }
-
-  function genNode (node, state) {
-    if (node.type === 1) {
-      return genElement(node, state)
-    } else if (node.type === 3 && node.isComment) {
-      return genComment(node)
-    } else {
-      return genText(node)
-    }
-  }
-
-  function genText (text) {
-    return ("_v(" + (text.type === 2
-      ? text.expression // no need for () because already wrapped in _s()
-      : transformSpecialNewlines(JSON.stringify(text.text))) + ")")
-  }
-
-  function genComment (comment) {
-    return ("_e(" + (JSON.stringify(comment.text)) + ")")
-  }
-
-  function genSlot (el, state) {
-    var slotName = el.slotName || '"default"';
-    var children = genChildren(el, state);
-    var res = "_t(" + slotName + (children ? ("," + children) : '');
-    var attrs = el.attrs || el.dynamicAttrs
-      ? genProps((el.attrs || []).concat(el.dynamicAttrs || []).map(function (attr) { return ({
-          // slot props are camelized
-          name: camelize(attr.name),
-          value: attr.value,
-          dynamic: attr.dynamic
-        }); }))
-      : null;
-    var bind$$1 = el.attrsMap['v-bind'];
-    if ((attrs || bind$$1) && !children) {
-      res += ",null";
-    }
-    if (attrs) {
-      res += "," + attrs;
-    }
-    if (bind$$1) {
-      res += (attrs ? '' : ',null') + "," + bind$$1;
-    }
-    return res + ')'
-  }
-
-  // componentName is el.component, take it as argument to shun flow's pessimistic refinement
-  function genComponent (
-    componentName,
-    el,
-    state
-  ) {
-    var children = el.inlineTemplate ? null : genChildren(el, state, true);
-    return ("_c(" + componentName + "," + (genData$2(el, state)) + (children ? ("," + children) : '') + ")")
-  }
-
-  function genProps (props) {
-    var staticProps = "";
-    var dynamicProps = "";
-    for (var i = 0; i < props.length; i++) {
-      var prop = props[i];
-      var value = transformSpecialNewlines(prop.value);
-      if (prop.dynamic) {
-        dynamicProps += (prop.name) + "," + value + ",";
-      } else {
-        staticProps += "\"" + (prop.name) + "\":" + value + ",";
-      }
-    }
-    staticProps = "{" + (staticProps.slice(0, -1)) + "}";
-    if (dynamicProps) {
-      return ("_d(" + staticProps + ",[" + (dynamicProps.slice(0, -1)) + "])")
-    } else {
-      return staticProps
-    }
-  }
-
-  // #3895, #4268
-  function transformSpecialNewlines (text) {
-    return text
-      .replace(/\u2028/g, '\\u2028')
-      .replace(/\u2029/g, '\\u2029')
-  }
-
-  /*  */
-
-
-
-  // these keywords should not appear inside expressions, but operators like
-  // typeof, instanceof and in are allowed
-  var prohibitedKeywordRE = new RegExp('\\b' + (
-    'do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const,' +
-    'super,throw,while,yield,delete,export,import,return,switch,default,' +
-    'extends,finally,continue,debugger,function,arguments'
-  ).split(',').join('\\b|\\b') + '\\b');
-
-  // these unary operators should not be used as property/method names
-  var unaryOperatorsRE = new RegExp('\\b' + (
-    'delete,typeof,void'
-  ).split(',').join('\\s*\\([^\\)]*\\)|\\b') + '\\s*\\([^\\)]*\\)');
-
-  // strip strings in expressions
-  var stripStringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g;
-
-  // detect problematic expressions in a template
-  function detectErrors (ast, warn) {
-    if (ast) {
-      checkNode(ast, warn);
-    }
-  }
-
-  function checkNode (node, warn) {
-    if (node.type === 1) {
-      for (var name in node.attrsMap) {
-        if (dirRE.test(name)) {
-          var value = node.attrsMap[name];
-          if (value) {
-            var range = node.rawAttrsMap[name];
-            if (name === 'v-for') {
-              checkFor(node, ("v-for=\"" + value + "\""), warn, range);
-            } else if (onRE.test(name)) {
-              checkEvent(value, (name + "=\"" + value + "\""), warn, range);
-            } else {
-              checkExpression(value, (name + "=\"" + value + "\""), warn, range);
-            }
-          }
-        }
-      }
-      if (node.children) {
-        for (var i = 0; i < node.children.length; i++) {
-          checkNode(node.children[i], warn);
-        }
-      }
-    } else if (node.type === 2) {
-      checkExpression(node.expression, node.text, warn, node);
-    }
-  }
-
-  function checkEvent (exp, text, warn, range) {
-    var stipped = exp.replace(stripStringRE, '');
-    var keywordMatch = stipped.match(unaryOperatorsRE);
-    if (keywordMatch && stipped.charAt(keywordMatch.index - 1) !== '$') {
-      warn(
-        "avoid using JavaScript unary operator as property name: " +
-        "\"" + (keywordMatch[0]) + "\" in expression " + (text.trim()),
-        range
-      );
-    }
-    checkExpression(exp, text, warn, range);
-  }
-
-  function checkFor (node, text, warn, range) {
-    checkExpression(node.for || '', text, warn, range);
-    checkIdentifier(node.alias, 'v-for alias', text, warn, range);
-    checkIdentifier(node.iterator1, 'v-for iterator', text, warn, range);
-    checkIdentifier(node.iterator2, 'v-for iterator', text, warn, range);
-  }
-
-  function checkIdentifier (
-    ident,
-    type,
-    text,
-    warn,
-    range
-  ) {
-    if (typeof ident === 'string') {
-      try {
-        new Function(("var " + ident + "=_"));
-      } catch (e) {
-        warn(("invalid " + type + " \"" + ident + "\" in expression: " + (text.trim())), range);
-      }
-    }
-  }
-
-  function checkExpression (exp, text, warn, range) {
-    try {
-      new Function(("return " + exp));
-    } catch (e) {
-      var keywordMatch = exp.replace(stripStringRE, '').match(prohibitedKeywordRE);
-      if (keywordMatch) {
-        warn(
-          "avoid using JavaScript keyword as property name: " +
-          "\"" + (keywordMatch[0]) + "\"\n  Raw expression: " + (text.trim()),
-          range
-        );
-      } else {
-        warn(
-          "invalid expression: " + (e.message) + " in\n\n" +
-          "    " + exp + "\n\n" +
-          "  Raw expression: " + (text.trim()) + "\n",
-          range
-        );
-      }
-    }
-  }
-
-  /*  */
-
-  var range = 2;
-
-  function generateCodeFrame (
-    source,
-    start,
-    end
-  ) {
-    if ( start === void 0 ) start = 0;
-    if ( end === void 0 ) end = source.length;
-
-    var lines = source.split(/\r?\n/);
-    var count = 0;
-    var res = [];
-    for (var i = 0; i < lines.length; i++) {
-      count += lines[i].length + 1;
-      if (count >= start) {
-        for (var j = i - range; j <= i + range || end > count; j++) {
-          if (j < 0 || j >= lines.length) { continue }
-          res.push(("" + (j + 1) + (repeat$1(" ", 3 - String(j + 1).length)) + "|  " + (lines[j])));
-          var lineLength = lines[j].length;
-          if (j === i) {
-            // push underline
-            var pad = start - (count - lineLength) + 1;
-            var length = end > count ? lineLength - pad : end - start;
-            res.push("   |  " + repeat$1(" ", pad) + repeat$1("^", length));
-          } else if (j > i) {
-            if (end > count) {
-              var length$1 = Math.min(end - count, lineLength);
-              res.push("   |  " + repeat$1("^", length$1));
-            }
-            count += lineLength + 1;
-          }
-        }
-        break
-      }
-    }
-    return res.join('\n')
-  }
-
-  function repeat$1 (str, n) {
-    var result = '';
-    if (n > 0) {
-      while (true) { // eslint-disable-line
-        if (n & 1) { result += str; }
-        n >>>= 1;
-        if (n <= 0) { break }
-        str += str;
-      }
-    }
-    return result
-  }
-
-  /*  */
-
-
-
-  function createFunction (code, errors) {
-    try {
-      return new Function(code)
-    } catch (err) {
-      errors.push({ err: err, code: code });
-      return noop
-    }
-  }
-
-  function createCompileToFunctionFn (compile) {
-    var cache = Object.create(null);
-
-    return function compileToFunctions (
-      template,
-      options,
-      vm
-    ) {
-      options = extend({}, options);
-      var warn$$1 = options.warn || warn;
-      delete options.warn;
-
-      /* istanbul ignore if */
-      {
-        // detect possible CSP restriction
-        try {
-          new Function('return 1');
-        } catch (e) {
-          if (e.toString().match(/unsafe-eval|CSP/)) {
-            warn$$1(
-              'It seems you are using the standalone build of Vue.js in an ' +
-              'environment with Content Security Policy that prohibits unsafe-eval. ' +
-              'The template compiler cannot work in this environment. Consider ' +
-              'relaxing the policy to allow unsafe-eval or pre-compiling your ' +
-              'templates into render functions.'
-            );
-          }
-        }
-      }
-
-      // check cache
-      var key = options.delimiters
-        ? String(options.delimiters) + template
-        : template;
-      if (cache[key]) {
-        return cache[key]
-      }
-
-      // compile
-      var compiled = compile(template, options);
-
-      // check compilation errors/tips
-      {
-        if (compiled.errors && compiled.errors.length) {
-          if (options.outputSourceRange) {
-            compiled.errors.forEach(function (e) {
-              warn$$1(
-                "Error compiling template:\n\n" + (e.msg) + "\n\n" +
-                generateCodeFrame(template, e.start, e.end),
-                vm
-              );
-            });
-          } else {
-            warn$$1(
-              "Error compiling template:\n\n" + template + "\n\n" +
-              compiled.errors.map(function (e) { return ("- " + e); }).join('\n') + '\n',
-              vm
-            );
-          }
-        }
-        if (compiled.tips && compiled.tips.length) {
-          if (options.outputSourceRange) {
-            compiled.tips.forEach(function (e) { return tip(e.msg, vm); });
-          } else {
-            compiled.tips.forEach(function (msg) { return tip(msg, vm); });
-          }
-        }
-      }
-
-      // turn code into functions
-      var res = {};
-      var fnGenErrors = [];
-      res.render = createFunction(compiled.render, fnGenErrors);
-      res.staticRenderFns = compiled.staticRenderFns.map(function (code) {
-        return createFunction(code, fnGenErrors)
-      });
-
-      // check function generation errors.
-      // this should only happen if there is a bug in the compiler itself.
-      // mostly for codegen development use
-      /* istanbul ignore if */
-      {
-        if ((!compiled.errors || !compiled.errors.length) && fnGenErrors.length) {
-          warn$$1(
-            "Failed to generate render function:\n\n" +
-            fnGenErrors.map(function (ref) {
-              var err = ref.err;
-              var code = ref.code;
-
-              return ((err.toString()) + " in\n\n" + code + "\n");
-          }).join('\n'),
-            vm
-          );
-        }
-      }
-
-      return (cache[key] = res)
-    }
-  }
-
-  /*  */
-
-  function createCompilerCreator (baseCompile) {
-    return function createCompiler (baseOptions) {
-      function compile (
-        template,
-        options
-      ) {
-        var finalOptions = Object.create(baseOptions);
-        var errors = [];
-        var tips = [];
-
-        var warn = function (msg, range, tip) {
-          (tip ? tips : errors).push(msg);
-        };
-
-        if (options) {
-          if (options.outputSourceRange) {
-            // $flow-disable-line
-            var leadingSpaceLength = template.match(/^\s*/)[0].length;
-
-            warn = function (msg, range, tip) {
-              var data = { msg: msg };
-              if (range) {
-                if (range.start != null) {
-                  data.start = range.start + leadingSpaceLength;
-                }
-                if (range.end != null) {
-                  data.end = range.end + leadingSpaceLength;
-                }
-              }
-              (tip ? tips : errors).push(data);
-            };
-          }
-          // merge custom modules
-          if (options.modules) {
-            finalOptions.modules =
-              (baseOptions.modules || []).concat(options.modules);
-          }
-          // merge custom directives
-          if (options.directives) {
-            finalOptions.directives = extend(
-              Object.create(baseOptions.directives || null),
-              options.directives
-            );
-          }
-          // copy other options
-          for (var key in options) {
-            if (key !== 'modules' && key !== 'directives') {
-              finalOptions[key] = options[key];
-            }
-          }
-        }
-
-        finalOptions.warn = warn;
-
-        var compiled = baseCompile(template.trim(), finalOptions);
-        {
-          detectErrors(compiled.ast, warn);
-        }
-        compiled.errors = errors;
-        compiled.tips = tips;
-        return compiled
-      }
-
-      return {
-        compile: compile,
-        compileToFunctions: createCompileToFunctionFn(compile)
-      }
-    }
-  }
-
-  /*  */
-
-  // `createCompilerCreator` allows creating compilers that use alternative
-  // parser/optimizer/codegen, e.g the SSR optimizing compiler.
-  // Here we just export a default compiler using the default parts.
-  var createCompiler = createCompilerCreator(function baseCompile (
-    template,
-    options
-  ) {
-    var ast = parse(template.trim(), options);
-    if (options.optimize !== false) {
-      optimize(ast, options);
-    }
-    var code = generate(ast, options);
-    return {
-      ast: ast,
-      render: code.render,
-      staticRenderFns: code.staticRenderFns
-    }
-  });
-
-  /*  */
-
-  var ref$1 = createCompiler(baseOptions);
-  var compile = ref$1.compile;
-  var compileToFunctions = ref$1.compileToFunctions;
-
-  /*  */
-
-  // check whether current browser encodes a char inside attribute values
-  var div;
-  function getShouldDecode (href) {
-    div = div || document.createElement('div');
-    div.innerHTML = href ? "<a href=\"\n\"/>" : "<div a=\"\n\"/>";
-    return div.innerHTML.indexOf('&#10;') > 0
-  }
-
-  // #3663: IE encodes newlines inside attribute values while other browsers don't
-  var shouldDecodeNewlines = inBrowser ? getShouldDecode(false) : false;
-  // #6828: chrome encodes content in a[href]
-  var shouldDecodeNewlinesForHref = inBrowser ? getShouldDecode(true) : false;
-
-  /*  */
-
-  var idToTemplate = cached(function (id) {
-    var el = query(id);
-    return el && el.innerHTML
-  });
-
-  var mount = Vue.prototype.$mount;
-  Vue.prototype.$mount = function (
-    el,
-    hydrating
-  ) {
-    el = el && query(el);
-
-    /* istanbul ignore if */
-    if (el === document.body || el === document.documentElement) {
-      warn(
-        "Do not mount Vue to <html> or <body> - mount to normal elements instead."
-      );
-      return this
-    }
-
-    var options = this.$options;
-    // resolve template/el and convert to render function
-    if (!options.render) {
-      var template = options.template;
-      if (template) {
-        if (typeof template === 'string') {
-          if (template.charAt(0) === '#') {
-            template = idToTemplate(template);
-            /* istanbul ignore if */
-            if (!template) {
-              warn(
-                ("Template element not found or is empty: " + (options.template)),
-                this
-              );
-            }
-          }
-        } else if (template.nodeType) {
-          template = template.innerHTML;
-        } else {
-          {
-            warn('invalid template option:' + template, this);
-          }
-          return this
-        }
-      } else if (el) {
-        template = getOuterHTML(el);
-      }
-      if (template) {
-        /* istanbul ignore if */
-        if (config.performance && mark) {
-          mark('compile');
-        }
-
-        var ref = compileToFunctions(template, {
-          outputSourceRange: "development" !== 'production',
-          shouldDecodeNewlines: shouldDecodeNewlines,
-          shouldDecodeNewlinesForHref: shouldDecodeNewlinesForHref,
-          delimiters: options.delimiters,
-          comments: options.comments
-        }, this);
-        var render = ref.render;
-        var staticRenderFns = ref.staticRenderFns;
-        options.render = render;
-        options.staticRenderFns = staticRenderFns;
-
-        /* istanbul ignore if */
-        if (config.performance && mark) {
-          mark('compile end');
-          measure(("vue " + (this._name) + " compile"), 'compile', 'compile end');
-        }
-      }
-    }
-    return mount.call(this, el, hydrating)
-  };
-
-  /**
-   * Get outerHTML of elements, taking care
-   * of SVG elements in IE as well.
-   */
-  function getOuterHTML (el) {
-    if (el.outerHTML) {
-      return el.outerHTML
-    } else {
-      var container = document.createElement('div');
-      container.appendChild(el.cloneNode(true));
-      return container.innerHTML
-    }
-  }
-
-  Vue.compile = compileToFunctions;
-
-  return Vue;
-
-}));
diff --git a/platypush/backend/http/templates/dashboard.html b/platypush/backend/http/templates/dashboard.html
index 9ab187a9f..3b7c73838 100644
--- a/platypush/backend/http/templates/dashboard.html
+++ b/platypush/backend/http/templates/dashboard.html
@@ -10,7 +10,7 @@
     <link rel="stylesheet" type="text/css" href="{{ url_for('static', filename='css/dist/dashboard.css') }}">
     <link rel="stylesheet" type="text/css" href="{{ url_for('static', filename='css/dist/webpanel/plugins/assistant.google.css') }}">
 
-    <script type="text/javascript" src="{{ url_for('static', filename='js/lib/vue.js') }}"></script>
+    <script type="text/javascript" src="{{ url_for('static', filename='js/lib/vue.min.js') }}"></script>
     <script type="text/javascript" src="{{ url_for('static', filename='js/lib/axios.min.js') }}"></script>
 
     <script type="text/javascript" src="{{ url_for('static', filename='js/api.js') }}"></script>
diff --git a/platypush/backend/http/templates/index.html b/platypush/backend/http/templates/index.html
index e00fbb859..a8b295f1a 100644
--- a/platypush/backend/http/templates/index.html
+++ b/platypush/backend/http/templates/index.html
@@ -32,7 +32,7 @@
         {% endif %}
     </script>
 
-    <script type="text/javascript" src="{{ url_for('static', filename='js/lib/vue.js') }}"></script>
+    <script type="text/javascript" src="{{ url_for('static', filename='js/lib/vue.min.js') }}"></script>
     <script type="text/javascript" src="{{ url_for('static', filename='js/lib/axios.min.js') }}"></script>
 
     <script type="text/javascript" src="{{ url_for('static', filename='js/api.js') }}"></script>