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  			switch(typeof modules[i]) {
  			case "function": break;
  			case "object":
  				// Module can be created from a template
  				modules[i] = (function(_m) {
  					var args = _m.slice(1), fn = modules[_m[0]];
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  /* 0 */
  /***/ function(module, exports, __webpack_require__) {
  
  	module.exports = __webpack_require__(4);
  
  
  /***/ },
  /* 1 */,
  /* 2 */
  /***/ function(module, exports, __webpack_require__) {
  
  	/* WEBPACK VAR INJECTION */(function(setImmediate, clearImmediate) {var nextTick = __webpack_require__(3).nextTick;
  	var apply = Function.prototype.apply;
  	var slice = Array.prototype.slice;
  	var immediateIds = {};
  	var nextImmediateId = 0;
  
  	// DOM APIs, for completeness
  
  	exports.setTimeout = function() {
  	  return new Timeout(apply.call(setTimeout, window, arguments), clearTimeout);
  	};
  	exports.setInterval = function() {
  	  return new Timeout(apply.call(setInterval, window, arguments), clearInterval);
  	};
  	exports.clearTimeout =
  	exports.clearInterval = function(timeout) { timeout.close(); };
  
  	function Timeout(id, clearFn) {
  	  this._id = id;
  	  this._clearFn = clearFn;
  	}
  	Timeout.prototype.unref = Timeout.prototype.ref = function() {};
  	Timeout.prototype.close = function() {
  	  this._clearFn.call(window, this._id);
  	};
  
  	// Does not start the time, just sets up the members needed.
  	exports.enroll = function(item, msecs) {
  	  clearTimeout(item._idleTimeoutId);
  	  item._idleTimeout = msecs;
  	};
  
  	exports.unenroll = function(item) {
  	  clearTimeout(item._idleTimeoutId);
  	  item._idleTimeout = -1;
  	};
  
  	exports._unrefActive = exports.active = function(item) {
  	  clearTimeout(item._idleTimeoutId);
  
  	  var msecs = item._idleTimeout;
  	  if (msecs >= 0) {
  	    item._idleTimeoutId = setTimeout(function onTimeout() {
  	      if (item._onTimeout)
  	        item._onTimeout();
  	    }, msecs);
  	  }
  	};
  
  	// That's not how node.js implements it but the exposed api is the same.
  	exports.setImmediate = typeof setImmediate === "function" ? setImmediate : function(fn) {
  	  var id = nextImmediateId++;
  	  var args = arguments.length < 2 ? false : slice.call(arguments, 1);
  
  	  immediateIds[id] = true;
  
  	  nextTick(function onNextTick() {
  	    if (immediateIds[id]) {
  	      // fn.call() is faster so we optimize for the common use-case
  	      // @see http://jsperf.com/call-apply-segu
  	      if (args) {
  	        fn.apply(null, args);
  	      } else {
  	        fn.call(null);
  	      }
  	      // Prevent ids from leaking
  	      exports.clearImmediate(id);
  	    }
  	  });
  
  	  return id;
  	};
  
  	exports.clearImmediate = typeof clearImmediate === "function" ? clearImmediate : function(id) {
  	  delete immediateIds[id];
  	};
  	/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(2).setImmediate, __webpack_require__(2).clearImmediate))
  
  /***/ },
  /* 3 */
  /***/ function(module, exports) {
  
  	// shim for using process in browser
  
  	var process = module.exports = {};
  
  	// cached from whatever global is present so that test runners that stub it
  	// don't break things.  But we need to wrap it in a try catch in case it is
  	// wrapped in strict mode code which doesn't define any globals.  It's inside a
  	// function because try/catches deoptimize in certain engines.
  
  	var cachedSetTimeout;
  	var cachedClearTimeout;
  
  	(function () {
  	  try {
  	    cachedSetTimeout = setTimeout;
  	  } catch (e) {
  	    cachedSetTimeout = function () {
  	      throw new Error('setTimeout is not defined');
  	    }
  	  }
  	  try {
  	    cachedClearTimeout = clearTimeout;
  	  } catch (e) {
  	    cachedClearTimeout = function () {
  	      throw new Error('clearTimeout is not defined');
  	    }
  	  }
  	} ())
  	var queue = [];
  	var draining = false;
  	var currentQueue;
  	var queueIndex = -1;
  
  	function cleanUpNextTick() {
  	    if (!draining || !currentQueue) {
  	        return;
  	    }
  	    draining = false;
  	    if (currentQueue.length) {
  	        queue = currentQueue.concat(queue);
  	    } else {
  	        queueIndex = -1;
  	    }
  	    if (queue.length) {
  	        drainQueue();
  	    }
  	}
  
  	function drainQueue() {
  	    if (draining) {
  	        return;
  	    }
  	    var timeout = cachedSetTimeout(cleanUpNextTick);
  	    draining = true;
  
  	    var len = queue.length;
  	    while(len) {
  	        currentQueue = queue;
  	        queue = [];
  	        while (++queueIndex < len) {
  	            if (currentQueue) {
  	                currentQueue[queueIndex].run();
  	            }
  	        }
  	        queueIndex = -1;
  	        len = queue.length;
  	    }
  	    currentQueue = null;
  	    draining = false;
  	    cachedClearTimeout(timeout);
  	}
  
  	process.nextTick = function (fun) {
  	    var args = new Array(arguments.length - 1);
  	    if (arguments.length > 1) {
  	        for (var i = 1; i < arguments.length; i++) {
  	            args[i - 1] = arguments[i];
  	        }
  	    }
  	    queue.push(new Item(fun, args));
  	    if (queue.length === 1 && !draining) {
  	        cachedSetTimeout(drainQueue, 0);
  	    }
  	};
  
  	// v8 likes predictible objects
  	function Item(fun, array) {
  	    this.fun = fun;
  	    this.array = array;
  	}
  	Item.prototype.run = function () {
  	    this.fun.apply(null, this.array);
  	};
  	process.title = 'browser';
  	process.browser = true;
  	process.env = {};
  	process.argv = [];
  	process.version = ''; // empty string to avoid regexp issues
  	process.versions = {};
  
  	function noop() {}
  
  	process.on = noop;
  	process.addListener = noop;
  	process.once = noop;
  	process.off = noop;
  	process.removeListener = noop;
  	process.removeAllListeners = noop;
  	process.emit = noop;
  
  	process.binding = function (name) {
  	    throw new Error('process.binding is not supported');
  	};
  
  	process.cwd = function () { return '/' };
  	process.chdir = function (dir) {
  	    throw new Error('process.chdir is not supported');
  	};
  	process.umask = function() { return 0; };
  
  
  /***/ },
  /* 4 */
  /***/ function(module, exports, __webpack_require__) {
  
  	/* WEBPACK VAR INJECTION */(function(global, setImmediate) {/*!
  	 * Vue.js v2.5.16
  	 * (c) 2014-2018 Evan You
  	 * Released under the MIT License.
  	 */
  	'use strict';
  
  	/*  */
  
  	var emptyObject = Object.freeze({});
  
  	// these helpers produces better vm code in JS engines due to their
  	// explicitness and function inlining
  	function isUndef (v) {
  	  return v === undefined || v === null
  	}
  
  	function isDef (v) {
  	  return v !== undefined && v !== null
  	}
  
  	function isTrue (v) {
  	  return v === true
  	}
  
  	function isFalse (v) {
  	  return v === false
  	}
  
  	/**
  	 * Check if value is primitive
  	 */
  	function isPrimitive (value) {
  	  return (
  	    typeof value === 'string' ||
  	    typeof value === 'number' ||
  	    // $flow-disable-line
  	    typeof value === 'symbol' ||
  	    typeof value === 'boolean'
  	  )
  	}
  
  	/**
  	 * Quick object check - this is primarily used to tell
  	 * Objects from primitive values when we know the value
  	 * is a JSON-compliant type.
  	 */
  	function isObject (obj) {
  	  return obj !== null && typeof obj === 'object'
  	}
  
  	/**
  	 * Get the raw type string of a value e.g. [object Object]
  	 */
  	var _toString = Object.prototype.toString;
  
  	function toRawType (value) {
  	  return _toString.call(value).slice(8, -1)
  	}
  
  	/**
  	 * Strict object type check. Only returns true
  	 * for plain JavaScript objects.
  	 */
  	function isPlainObject (obj) {
  	  return _toString.call(obj) === '[object Object]'
  	}
  
  	function isRegExp (v) {
  	  return _toString.call(v) === '[object RegExp]'
  	}
  
  	/**
  	 * Check if val is a valid array index.
  	 */
  	function isValidArrayIndex (val) {
  	  var n = parseFloat(String(val));
  	  return n >= 0 && Math.floor(n) === n && isFinite(val)
  	}
  
  	/**
  	 * Convert a value to a string that is actually rendered.
  	 */
  	function toString (val) {
  	  return val == null
  	    ? ''
  	    : typeof val === 'object'
  	      ? JSON.stringify(val, null, 2)
  	      : String(val)
  	}
  
  	/**
  	 * Convert a input value to a number for persistence.
  	 * If the conversion fails, return original string.
  	 */
  	function toNumber (val) {
  	  var n = parseFloat(val);
  	  return isNaN(n) ? val : n
  	}
  
  	/**
  	 * Make a map and return a function for checking if a key
  	 * is in that map.
  	 */
  	function makeMap (
  	  str,
  	  expectsLowerCase
  	) {
  	  var map = Object.create(null);
  	  var list = str.split(',');
  	  for (var i = 0; i < list.length; i++) {
  	    map[list[i]] = true;
  	  }
  	  return expectsLowerCase
  	    ? function (val) { return map[val.toLowerCase()]; }
  	    : function (val) { return map[val]; }
  	}
  
  	/**
  	 * Check if a tag is a built-in tag.
  	 */
  	var isBuiltInTag = makeMap('slot,component', true);
  
  	/**
  	 * Check if a 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 the 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 more performant in most browsers, but removing it would be breaking for
  	 * code that was able to run in PhantomJS 1.x, so this must be kept for
  	 * backwards 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
  	}
  
  	/**
  	 * 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; };
  
  	/**
  	 * Return same value
  	 */
  	var identity = function (_) { return _; };
  
  	/**
  	 * Generate a static keys string from compiler modules.
  	 */
  	function genStaticKeys (modules) {
  	  return modules.reduce(function (keys, m) {
  	    return keys.concat(m.staticKeys || [])
  	  }, []).join(',')
  	}
  
  	/**
  	 * Check if two values are loosely equal - that is,
  	 * if they are plain objects, do they have the same shape?
  	 */
  	function looseEqual (a, b) {
  	  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 (!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
  	  }
  	}
  
  	function looseIndexOf (arr, val) {
  	  for (var i = 0; i < arr.length; i++) {
  	    if (looseEqual(arr[i], val)) { return i }
  	  }
  	  return -1
  	}
  
  	/**
  	 * Ensure a function is called only once.
  	 */
  	function once (fn) {
  	  var called = false;
  	  return function () {
  	    if (!called) {
  	      called = true;
  	      fn.apply(this, arguments);
  	    }
  	  }
  	}
  
  	var SSR_ATTR = 'data-server-rendered';
  
  	var ASSET_TYPES = [
  	  'component',
  	  'directive',
  	  'filter'
  	];
  
  	var LIFECYCLE_HOOKS = [
  	  'beforeCreate',
  	  'created',
  	  'beforeMount',
  	  'mounted',
  	  'beforeUpdate',
  	  'updated',
  	  'beforeDestroy',
  	  'destroyed',
  	  'activated',
  	  'deactivated',
  	  'errorCaptured'
  	];
  
  	/*  */
  
  	var config = ({
  	  /**
  	   * Option merge strategies (used in core/util/options)
  	   */
  	  // $flow-disable-line
  	  optionMergeStrategies: Object.create(null),
  
  	  /**
  	   * Whether to suppress warnings.
  	   */
  	  silent: false,
  
  	  /**
  	   * Show production mode tip message on boot?
  	   */
  	  productionTip: ("production") !== 'production',
  
  	  /**
  	   * Whether to enable devtools
  	   */
  	  devtools: ("production") !== '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,
  
  	  /**
  	   * Exposed for legacy reasons
  	   */
  	  _lifecycleHooks: LIFECYCLE_HOOKS
  	})
  
  	/*  */
  
  	/**
  	 * Check if a string starts with $ or _
  	 */
  	function isReserved (str) {
  	  var c = (str + '').charCodeAt(0);
  	  return c === 0x24 || c === 0x5F
  	}
  
  	/**
  	 * Define a property.
  	 */
  	function def (obj, key, val, enumerable) {
  	  Object.defineProperty(obj, key, {
  	    value: val,
  	    enumerable: !!enumerable,
  	    writable: true,
  	    configurable: true
  	  });
  	}
  
  	/**
  	 * Parse simple path.
  	 */
  	var bailRE = /[^\w.$]/;
  	function parsePath (path) {
  	  if (bailRE.test(path)) {
  	    return
  	  }
  	  var segments = path.split('.');
  	  return function (obj) {
  	    for (var i = 0; i < segments.length; i++) {
  	      if (!obj) { return }
  	      obj = obj[segments[i]];
  	    }
  	    return obj
  	  }
  	}
  
  	/*  */
  
  	// can we use __proto__?
  	var hasProto = '__proto__' in {};
  
  	// Browser environment sniffing
  	var inBrowser = typeof window !== 'undefined';
  	var inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform;
  	var weexPlatform = inWeex && WXEnvironment.platform.toLowerCase();
  	var UA = inBrowser && window.navigator.userAgent.toLowerCase();
  	var isIE = UA && /msie|trident/.test(UA);
  	var isIE9 = UA && UA.indexOf('msie 9.0') > 0;
  	var isEdge = UA && UA.indexOf('edge/') > 0;
  	var isAndroid = (UA && UA.indexOf('android') > 0) || (weexPlatform === 'android');
  	var isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || (weexPlatform === 'ios');
  	var isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge;
  
  	// Firefox has a "watch" function on Object.prototype...
  	var nativeWatch = ({}).watch;
  
  	var supportsPassive = false;
  	if (inBrowser) {
  	  try {
  	    var opts = {};
  	    Object.defineProperty(opts, 'passive', ({
  	      get: function get () {
  	        /* istanbul ignore next */
  	        supportsPassive = true;
  	      }
  	    })); // https://github.com/facebook/flow/issues/285
  	    window.addEventListener('test-passive', null, opts);
  	  } catch (e) {}
  	}
  
  	// this needs to be lazy-evaled because vue may be required before
  	// vue-server-renderer can set VUE_ENV
  	var _isServer;
  	var isServerRendering = function () {
  	  if (_isServer === undefined) {
  	    /* istanbul ignore if */
  	    if (!inBrowser && !inWeex && typeof global !== 'undefined') {
  	      // detect presence of vue-server-renderer and avoid
  	      // Webpack shimming the process
  	      _isServer = global['process'].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 = (function () {
  	    function Set () {
  	      this.set = Object.create(null);
  	    }
  	    Set.prototype.has = function has (key) {
  	      return this.set[key] === true
  	    };
  	    Set.prototype.add = function add (key) {
  	      this.set[key] = true;
  	    };
  	    Set.prototype.clear = function clear () {
  	      this.set = Object.create(null);
  	    };
  
  	    return Set;
  	  }());
  	}
  
  	/*  */
  
  	var warn = noop;
  	var tip = noop;
  	var generateComponentTrace = (noop); // work around flow check
  	var formatComponentName = (noop);
  
  	if (false) {
  	  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();
  	  for (var i = 0, l = subs.length; i < l; i++) {
  	    subs[i].update();
  	  }
  	};
  
  	// the current target watcher being evaluated.
  	// this is globally unique because there could be only one
  	// watcher being evaluated at any time.
  	Dep.target = null;
  	var targetStack = [];
  
  	function pushTarget (_target) {
  	  if (Dep.target) { targetStack.push(Dep.target); }
  	  Dep.target = _target;
  	}
  
  	function popTarget () {
  	  Dep.target = targetStack.pop();
  	}
  
  	/*  */
  
  	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,
  	    vnode.children,
  	    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.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)) {
  	    var augment = hasProto
  	      ? protoAugment
  	      : copyAugment;
  	    augment(value, arrayMethods, arrayKeys);
  	    this.observeArray(value);
  	  } else {
  	    this.walk(value);
  	  }
  	};
  
  	/**
  	 * Walk through each property and convert them into
  	 * getter/setters. This method should only be called when
  	 * value type is Object.
  	 */
  	Observer.prototype.walk = function walk (obj) {
  	  var keys = Object.keys(obj);
  	  for (var i = 0; i < keys.length; i++) {
  	    defineReactive(obj, keys[i]);
  	  }
  	};
  
  	/**
  	 * Observe a list of Array items.
  	 */
  	Observer.prototype.observeArray = function observeArray (items) {
  	  for (var i = 0, l = items.length; i < l; i++) {
  	    observe(items[i]);
  	  }
  	};
  
  	// helpers
  
  	/**
  	 * Augment an target Object or Array by intercepting
  	 * the prototype chain using __proto__
  	 */
  	function protoAugment (target, src, keys) {
  	  /* eslint-disable no-proto */
  	  target.__proto__ = src;
  	  /* eslint-enable no-proto */
  	}
  
  	/**
  	 * Augment an target Object or Array by defining
  	 * hidden properties.
  	 */
  	/* istanbul ignore next */
  	function copyAugment (target, src, keys) {
  	  for (var i = 0, l = keys.length; i < l; i++) {
  	    var key = keys[i];
  	    def(target, key, src[key]);
  	  }
  	}
  
  	/**
  	 * Attempt to create an observer instance for a value,
  	 * returns the new observer if successfully observed,
  	 * or the existing observer if the value already has one.
  	 */
  	function observe (value, asRootData) {
  	  if (!isObject(value) || 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 (
  	  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;
  	  if (!getter && arguments.length === 2) {
  	    val = obj[key];
  	  }
  	  var setter = property && property.set;
  
  	  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 (false) {
  	        customSetter();
  	      }
  	      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 (false
  	  ) {
  	    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)) {
  	    ("production") !== 'production' && warn(
  	      'Avoid adding reactive properties to a Vue instance or its root $data ' +
  	      'at runtime - declare it upfront in the data option.'
  	    );
  	    return val
  	  }
  	  if (!ob) {
  	    target[key] = val;
  	    return val
  	  }
  	  defineReactive(ob.value, key, val);
  	  ob.dep.notify();
  	  return val
  	}
  
  	/**
  	 * Delete a property and trigger change if necessary.
  	 */
  	function del (target, key) {
  	  if (false
  	  ) {
  	    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)) {
  	    ("production") !== 'production' && warn(
  	      'Avoid deleting properties on a Vue instance or its root $data ' +
  	      '- just set it to null.'
  	    );
  	    return
  	  }
  	  if (!hasOwn(target, key)) {
  	    return
  	  }
  	  delete target[key];
  	  if (!ob) {
  	    return
  	  }
  	  ob.dep.notify();
  	}
  
  	/**
  	 * Collect dependencies on array elements when the array is touched, since
  	 * we cannot intercept array element access like property getters.
  	 */
  	function dependArray (value) {
  	  for (var e = (void 0), i = 0, l = value.length; i < l; i++) {
  	    e = value[i];
  	    e && e.__ob__ && e.__ob__.dep.depend();
  	    if (Array.isArray(e)) {
  	      dependArray(e);
  	    }
  	  }
  	}
  
  	/*  */
  
  	/**
  	 * Option overwriting strategies are functions that handle
  	 * how to merge a parent option value and a child option
  	 * value into the final value.
  	 */
  	var strats = config.optionMergeStrategies;
  
  	/**
  	 * Options with restrictions
  	 */
  	if (false) {
  	  strats.el = strats.propsData = function (parent, child, vm, key) {
  	    if (!vm) {
  	      warn(
  	        "option \"" + key + "\" can only be used during instance " +
  	        'creation with the `new` keyword.'
  	      );
  	    }
  	    return defaultStrat(parent, child)
  	  };
  	}
  
  	/**
  	 * Helper that recursively merges two data objects together.
  	 */
  	function mergeData (to, from) {
  	  if (!from) { return to }
  	  var key, toVal, fromVal;
  	  var keys = Object.keys(from);
  	  for (var i = 0; i < keys.length; i++) {
  	    key = keys[i];
  	    toVal = to[key];
  	    fromVal = from[key];
  	    if (!hasOwn(to, key)) {
  	      set(to, key, fromVal);
  	    } else if (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') {
  	      ("production") !== 'production' && warn(
  	        'The "data" option should be a function ' +
  	        'that returns a per-instance value in component ' +
  	        'definitions.',
  	        vm
  	      );
  
  	      return parentVal
  	    }
  	    return mergeDataOrFn(parentVal, childVal)
  	  }
  
  	  return mergeDataOrFn(parentVal, childVal, vm)
  	};
  
  	/**
  	 * Hooks and props are merged as arrays.
  	 */
  	function mergeHook (
  	  parentVal,
  	  childVal
  	) {
  	  return childVal
  	    ? parentVal
  	      ? parentVal.concat(childVal)
  	      : Array.isArray(childVal)
  	        ? childVal
  	        : [childVal]
  	    : parentVal
  	}
  
  	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) {
  	    ("production") !== 'production' && assertObjectType(key, childVal, vm);
  	    return extend(res, childVal)
  	  } else {
  	    return res
  	  }
  	}
  
  	ASSET_TYPES.forEach(function (type) {
  	  strats[type + 's'] = mergeAssets;
  	});
  
  	/**
  	 * Watchers.
  	 *
  	 * Watchers hashes should not overwrite one
  	 * another, so we merge them as arrays.
  	 */
  	strats.watch = function (
  	  parentVal,
  	  childVal,
  	  vm,
  	  key
  	) {
  	  // work around Firefox's Object.prototype.watch...
  	  if (parentVal === nativeWatch) { parentVal = undefined; }
  	  if (childVal === nativeWatch) { childVal = undefined; }
  	  /* istanbul ignore if */
  	  if (!childVal) { return Object.create(parentVal || null) }
  	  if (false) {
  	    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 && ("production") !== 'production') {
  	    assertObjectType(key, childVal, vm);
  	  }
  	  if (!parentVal) { return childVal }
  	  var ret = Object.create(null);
  	  extend(ret, parentVal);
  	  if (childVal) { extend(ret, childVal); }
  	  return ret
  	};
  	strats.provide = mergeDataOrFn;
  
  	/**
  	 * Default strategy.
  	 */
  	var defaultStrat = function (parentVal, childVal) {
  	  return childVal === undefined
  	    ? parentVal
  	    : childVal
  	};
  
  	/**
  	 * Validate component names
  	 */
  	function checkComponents (options) {
  	  for (var key in options.components) {
  	    validateComponentName(key);
  	  }
  	}
  
  	function validateComponentName (name) {
  	  if (!/^[a-zA-Z][\w-]*$/.test(name)) {
  	    warn(
  	      'Invalid component name: "' + name + '". Component names ' +
  	      'can only contain alphanumeric characters and the hyphen, ' +
  	      'and must start with a letter.'
  	    );
  	  }
  	  if (isBuiltInTag(name) || config.isReservedTag(name)) {
  	    warn(
  	      'Do not use built-in or reserved HTML elements as component ' +
  	      'id: ' + name
  	    );
  	  }
  	}
  
  	/**
  	 * Ensure all props option syntax are normalized into the
  	 * Object-based format.
  	 */
  	function normalizeProps (options, vm) {
  	  var props = options.props;
  	  if (!props) { return }
  	  var res = {};
  	  var i, val, name;
  	  if (Array.isArray(props)) {
  	    i = props.length;
  	    while (i--) {
  	      val = props[i];
  	      if (typeof val === 'string') {
  	        name = camelize(val);
  	        res[name] = { type: null };
  	      } else if (false) {
  	        warn('props must be strings when using array syntax.');
  	      }
  	    }
  	  } else if (isPlainObject(props)) {
  	    for (var key in props) {
  	      val = props[key];
  	      name = camelize(key);
  	      res[name] = isPlainObject(val)
  	        ? val
  	        : { type: val };
  	    }
  	  } else if (false) {
  	    warn(
  	      "Invalid value for option \"props\": expected an Array or an Object, " +
  	      "but got " + (toRawType(props)) + ".",
  	      vm
  	    );
  	  }
  	  options.props = res;
  	}
  
  	/**
  	 * Normalize all injections into Object-based format
  	 */
  	function normalizeInject (options, vm) {
  	  var inject = options.inject;
  	  if (!inject) { return }
  	  var normalized = options.inject = {};
  	  if (Array.isArray(inject)) {
  	    for (var i = 0; i < inject.length; i++) {
  	      normalized[inject[i]] = { from: inject[i] };
  	    }
  	  } else if (isPlainObject(inject)) {
  	    for (var key in inject) {
  	      var val = inject[key];
  	      normalized[key] = isPlainObject(val)
  	        ? extend({ from: key }, val)
  	        : { from: val };
  	    }
  	  } else if (false) {
  	    warn(
  	      "Invalid value for option \"inject\": expected an Array or an Object, " +
  	      "but got " + (toRawType(inject)) + ".",
  	      vm
  	    );
  	  }
  	}
  
  	/**
  	 * Normalize raw function directives into object format.
  	 */
  	function normalizeDirectives (options) {
  	  var dirs = options.directives;
  	  if (dirs) {
  	    for (var key in dirs) {
  	      var def = dirs[key];
  	      if (typeof def === 'function') {
  	        dirs[key] = { bind: def, update: def };
  	      }
  	    }
  	  }
  	}
  
  	function assertObjectType (name, value, vm) {
  	  if (!isPlainObject(value)) {
  	    warn(
  	      "Invalid value for option \"" + name + "\": expected an Object, " +
  	      "but got " + (toRawType(value)) + ".",
  	      vm
  	    );
  	  }
  	}
  
  	/**
  	 * Merge two option objects into a new one.
  	 * Core utility used in both instantiation and inheritance.
  	 */
  	function mergeOptions (
  	  parent,
  	  child,
  	  vm
  	) {
  	  if (false) {
  	    checkComponents(child);
  	  }
  
  	  if (typeof child === 'function') {
  	    child = child.options;
  	  }
  
  	  normalizeProps(child, vm);
  	  normalizeInject(child, vm);
  	  normalizeDirectives(child);
  	  var extendsFrom = child.extends;
  	  if (extendsFrom) {
  	    parent = mergeOptions(parent, extendsFrom, 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 (false) {
  	    warn(
  	      'Failed to resolve ' + type.slice(0, -1) + ': ' + id,
  	      options
  	    );
  	  }
  	  return res
  	}
  
  	/*  */
  
  	function validateProp (
  	  key,
  	  propOptions,
  	  propsData,
  	  vm
  	) {
  	  var prop = propOptions[key];
  	  var absent = !hasOwn(propsData, key);
  	  var value = propsData[key];
  	  // boolean casting
  	  var booleanIndex = getTypeIndex(Boolean, prop.type);
  	  if (booleanIndex > -1) {
  	    if (absent && !hasOwn(prop, 'default')) {
  	      value = false;
  	    } else if (value === '' || value === hyphenate(key)) {
  	      // only cast empty string / same name to boolean if
  	      // boolean has higher priority
  	      var stringIndex = getTypeIndex(String, prop.type);
  	      if (stringIndex < 0 || booleanIndex < stringIndex) {
  	        value = true;
  	      }
  	    }
  	  }
  	  // check default value
  	  if (value === undefined) {
  	    value = getPropDefaultValue(vm, prop, key);
  	    // since the default value is a fresh copy,
  	    // make sure to observe it.
  	    var prevShouldObserve = shouldObserve;
  	    toggleObserving(true);
  	    observe(value);
  	    toggleObserving(prevShouldObserve);
  	  }
  	  if (
  	    false
  	  ) {
  	    assertProp(prop, key, value, vm, absent);
  	  }
  	  return value
  	}
  
  	/**
  	 * Get the default value of a prop.
  	 */
  	function getPropDefaultValue (vm, prop, key) {
  	  // no default, return undefined
  	  if (!hasOwn(prop, 'default')) {
  	    return undefined
  	  }
  	  var def = prop.default;
  	  // warn against non-factory defaults for Object & Array
  	  if (false) {
  	    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(
  	      "Invalid prop: type check failed for prop \"" + name + "\"." +
  	      " Expected " + (expectedTypes.map(capitalize).join(', ')) +
  	      ", got " + (toRawType(value)) + ".",
  	      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 handleError (err, vm, info) {
  	  if (vm) {
  	    var cur = vm;
  	    while ((cur = cur.$parent)) {
  	      var hooks = cur.$options.errorCaptured;
  	      if (hooks) {
  	        for (var i = 0; i < hooks.length; i++) {
  	          try {
  	            var capture = hooks[i].call(cur, err, vm, info) === false;
  	            if (capture) { return }
  	          } catch (e) {
  	            globalHandleError(e, cur, 'errorCaptured hook');
  	          }
  	        }
  	      }
  	    }
  	  }
  	  globalHandleError(err, vm, info);
  	}
  
  	function globalHandleError (err, vm, info) {
  	  if (config.errorHandler) {
  	    try {
  	      return config.errorHandler.call(null, err, vm, info)
  	    } catch (e) {
  	      logError(e, null, 'config.errorHandler');
  	    }
  	  }
  	  logError(err, vm, info);
  	}
  
  	function logError (err, vm, info) {
  	  if (false) {
  	    warn(("Error in " + info + ": \"" + (err.toString()) + "\""), vm);
  	  }
  	  /* istanbul ignore else */
  	  if ((inBrowser || inWeex) && typeof console !== 'undefined') {
  	    console.error(err);
  	  } else {
  	    throw err
  	  }
  	}
  
  	/*  */
  	/* globals MessageChannel */
  
  	var callbacks = [];
  	var pending = false;
  
  	function flushCallbacks () {
  	  pending = false;
  	  var copies = callbacks.slice(0);
  	  callbacks.length = 0;
  	  for (var i = 0; i < copies.length; i++) {
  	    copies[i]();
  	  }
  	}
  
  	// Here we have async deferring wrappers using both microtasks and (macro) tasks.
  	// In < 2.4 we used microtasks everywhere, but there are some scenarios where
  	// microtasks have too high a priority and fire in between supposedly
  	// sequential events (e.g. #4521, #6690) or even between bubbling of the same
  	// event (#6566). However, using (macro) tasks everywhere also has subtle problems
  	// when state is changed right before repaint (e.g. #6813, out-in transitions).
  	// Here we use microtask by default, but expose a way to force (macro) task when
  	// needed (e.g. in event handlers attached by v-on).
  	var microTimerFunc;
  	var macroTimerFunc;
  	var useMacroTask = false;
  
  	// Determine (macro) task defer implementation.
  	// Technically setImmediate should be the ideal choice, but it's only available
  	// in IE. The only polyfill that consistently queues the callback after all DOM
  	// events triggered in the same loop is by using MessageChannel.
  	/* istanbul ignore if */
  	if (typeof setImmediate !== 'undefined' && isNative(setImmediate)) {
  	  macroTimerFunc = function () {
  	    setImmediate(flushCallbacks);
  	  };
  	} else if (typeof MessageChannel !== 'undefined' && (
  	  isNative(MessageChannel) ||
  	  // PhantomJS
  	  MessageChannel.toString() === '[object MessageChannelConstructor]'
  	)) {
  	  var channel = new MessageChannel();
  	  var port = channel.port2;
  	  channel.port1.onmessage = flushCallbacks;
  	  macroTimerFunc = function () {
  	    port.postMessage(1);
  	  };
  	} else {
  	  /* istanbul ignore next */
  	  macroTimerFunc = function () {
  	    setTimeout(flushCallbacks, 0);
  	  };
  	}
  
  	// Determine microtask defer implementation.
  	/* istanbul ignore next, $flow-disable-line */
  	if (typeof Promise !== 'undefined' && isNative(Promise)) {
  	  var p = Promise.resolve();
  	  microTimerFunc = function () {
  	    p.then(flushCallbacks);
  	    // in problematic UIWebViews, Promise.then doesn't completely break, but
  	    // it can get stuck in a weird state where callbacks are pushed into the
  	    // microtask queue but the queue isn't being flushed, until the browser
  	    // needs to do some other work, e.g. handle a timer. Therefore we can
  	    // "force" the microtask queue to be flushed by adding an empty timer.
  	    if (isIOS) { setTimeout(noop); }
  	  };
  	} else {
  	  // fallback to macro
  	  microTimerFunc = macroTimerFunc;
  	}
  
  	/**
  	 * Wrap a function so that if any code inside triggers state change,
  	 * the changes are queued using a (macro) task instead of a microtask.
  	 */
  	function withMacroTask (fn) {
  	  return fn._withTask || (fn._withTask = function () {
  	    useMacroTask = true;
  	    var res = fn.apply(null, arguments);
  	    useMacroTask = false;
  	    return res
  	  })
  	}
  
  	function nextTick (cb, ctx) {
  	  var _resolve;
  	  callbacks.push(function () {
  	    if (cb) {
  	      try {
  	        cb.call(ctx);
  	      } catch (e) {
  	        handleError(e, ctx, 'nextTick');
  	      }
  	    } else if (_resolve) {
  	      _resolve(ctx);
  	    }
  	  });
  	  if (!pending) {
  	    pending = true;
  	    if (useMacroTask) {
  	      macroTimerFunc();
  	    } else {
  	      microTimerFunc();
  	    }
  	  }
  	  // $flow-disable-line
  	  if (!cb && typeof Promise !== 'undefined') {
  	    return new Promise(function (resolve) {
  	      _resolve = resolve;
  	    })
  	  }
  	}
  
  	/*  */
  
  	var mark;
  	var measure;
  
  	if (false) {
  	  var perf = inBrowser && window.performance;
  	  /* istanbul ignore if */
  	  if (
  	    perf &&
  	    perf.mark &&
  	    perf.measure &&
  	    perf.clearMarks &&
  	    perf.clearMeasures
  	  ) {
  	    mark = function (tag) { return perf.mark(tag); };
  	    measure = function (name, startTag, endTag) {
  	      perf.measure(name, startTag, endTag);
  	      perf.clearMarks(startTag);
  	      perf.clearMarks(endTag);
  	      perf.clearMeasures(name);
  	    };
  	  }
  	}
  
  	/* not type checking this file because flow doesn't play well with Proxy */
  
  	var initProxy;
  
  	if (false) {
  	  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 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) || key.charAt(0) === '_';
  	      if (!has && !isAllowed) {
  	        warnNonPresent(target, key);
  	      }
  	      return has || !isAllowed
  	    }
  	  };
  
  	  var getHandler = {
  	    get: function get (target, key) {
  	      if (typeof key === 'string' && !(key in target)) {
  	        warnNonPresent(target, key);
  	      }
  	      return target[key]
  	    }
  	  };
  
  	  initProxy = function initProxy (vm) {
  	    if (hasProxy) {
  	      // determine which proxy handler to use
  	      var options = vm.$options;
  	      var handlers = options.render && options.render._withStripped
  	        ? getHandler
  	        : hasHandler;
  	      vm._renderProxy = new Proxy(vm, handlers);
  	    } else {
  	      vm._renderProxy = vm;
  	    }
  	  };
  	}
  
  	/*  */
  
  	var seenObjects = new _Set();
  
  	/**
  	 * Recursively traverse an object to evoke all converted
  	 * getters, so that every nested property inside the object
  	 * is collected as a "deep" dependency.
  	 */
  	function traverse (val) {
  	  _traverse(val, seenObjects);
  	  seenObjects.clear();
  	}
  
  	function _traverse (val, seen) {
  	  var i, keys;
  	  var isA = Array.isArray(val);
  	  if ((!isA && !isObject(val)) || Object.isFrozen(val) || val instanceof VNode) {
  	    return
  	  }
  	  if (val.__ob__) {
  	    var depId = val.__ob__.dep.id;
  	    if (seen.has(depId)) {
  	      return
  	    }
  	    seen.add(depId);
  	  }
  	  if (isA) {
  	    i = val.length;
  	    while (i--) { _traverse(val[i], seen); }
  	  } else {
  	    keys = Object.keys(val);
  	    i = keys.length;
  	    while (i--) { _traverse(val[keys[i]], seen); }
  	  }
  	}
  
  	/*  */
  
  	var normalizeEvent = cached(function (name) {
  	  var passive = name.charAt(0) === '&';
  	  name = passive ? name.slice(1) : name;
  	  var once$$1 = name.charAt(0) === '~'; // Prefixed last, checked first
  	  name = once$$1 ? name.slice(1) : name;
  	  var capture = name.charAt(0) === '!';
  	  name = capture ? name.slice(1) : name;
  	  return {
  	    name: name,
  	    once: once$$1,
  	    capture: capture,
  	    passive: passive
  	  }
  	});
  
  	function createFnInvoker (fns) {
  	  function invoker () {
  	    var arguments$1 = arguments;
  
  	    var fns = invoker.fns;
  	    if (Array.isArray(fns)) {
  	      var cloned = fns.slice();
  	      for (var i = 0; i < cloned.length; i++) {
  	        cloned[i].apply(null, arguments$1);
  	      }
  	    } else {
  	      // return handler return value for single handlers
  	      return fns.apply(null, arguments)
  	    }
  	  }
  	  invoker.fns = fns;
  	  return invoker
  	}
  
  	function updateListeners (
  	  on,
  	  oldOn,
  	  add,
  	  remove$$1,
  	  vm
  	) {
  	  var name, def, cur, old, event;
  	  for (name in on) {
  	    def = cur = on[name];
  	    old = oldOn[name];
  	    event = normalizeEvent(name);
  	    /* istanbul ignore if */
  	    if (isUndef(cur)) {
  	      ("production") !== 'production' && warn(
  	        "Invalid handler for event \"" + (event.name) + "\": got " + String(cur),
  	        vm
  	      );
  	    } else if (isUndef(old)) {
  	      if (isUndef(cur.fns)) {
  	        cur = on[name] = createFnInvoker(cur);
  	      }
  	      add(event.name, cur, event.once, event.capture, event.passive, event.params);
  	    } else if (cur !== old) {
  	      old.fns = cur;
  	      on[name] = old;
  	    }
  	  }
  	  for (name in oldOn) {
  	    if (isUndef(on[name])) {
  	      event = normalizeEvent(name);
  	      remove$$1(event.name, oldOn[name], event.capture);
  	    }
  	  }
  	}
  
  	/*  */
  
  	function mergeVNodeHook (def, hookKey, hook) {
  	  if (def instanceof VNode) {
  	    def = def.data.hook || (def.data.hook = {});
  	  }
  	  var invoker;
  	  var oldHook = def[hookKey];
  
  	  function wrappedHook () {
  	    hook.apply(this, arguments);
  	    // important: remove merged hook to ensure it's called only once
  	    // and prevent memory leak
  	    remove(invoker.fns, wrappedHook);
  	  }
  
  	  if (isUndef(oldHook)) {
  	    // no existing hook
  	    invoker = createFnInvoker([wrappedHook]);
  	  } else {
  	    /* istanbul ignore if */
  	    if (isDef(oldHook.fns) && isTrue(oldHook.merged)) {
  	      // already a merged invoker
  	      invoker = oldHook;
  	      invoker.fns.push(wrappedHook);
  	    } else {
  	      // existing plain hook
  	      invoker = createFnInvoker([oldHook, wrappedHook]);
  	    }
  	  }
  
  	  invoker.merged = true;
  	  def[hookKey] = invoker;
  	}
  
  	/*  */
  
  	function extractPropsFromVNodeData (
  	  data,
  	  Ctor,
  	  tag
  	) {
  	  // we are only extracting raw values here.
  	  // validation and default values are handled in the child
  	  // component itself.
  	  var propOptions = Ctor.options.props;
  	  if (isUndef(propOptions)) {
  	    return
  	  }
  	  var res = {};
  	  var attrs = data.attrs;
  	  var props = data.props;
  	  if (isDef(attrs) || isDef(props)) {
  	    for (var key in propOptions) {
  	      var altKey = hyphenate(key);
  	      if (false) {
  	        var keyInLowerCase = key.toLowerCase();
  	        if (
  	          key !== keyInLowerCase &&
  	          attrs && hasOwn(attrs, keyInLowerCase)
  	        ) {
  	          tip(
  	            "Prop \"" + keyInLowerCase + "\" is passed to component " +
  	            (formatComponentName(tag || Ctor)) + ", but the declared prop name is" +
  	            " \"" + key + "\". " +
  	            "Note that HTML attributes are case-insensitive and camelCased " +
  	            "props need to use their kebab-case equivalents when using in-DOM " +
  	            "templates. You should probably use \"" + altKey + "\" instead of \"" + key + "\"."
  	          );
  	        }
  	      }
  	      checkProp(res, props, key, altKey, true) ||
  	      checkProp(res, attrs, key, altKey, false);
  	    }
  	  }
  	  return res
  	}
  
  	function checkProp (
  	  res,
  	  hash,
  	  key,
  	  altKey,
  	  preserve
  	) {
  	  if (isDef(hash)) {
  	    if (hasOwn(hash, key)) {
  	      res[key] = hash[key];
  	      if (!preserve) {
  	        delete hash[key];
  	      }
  	      return true
  	    } else if (hasOwn(hash, altKey)) {
  	      res[key] = hash[altKey];
  	      if (!preserve) {
  	        delete hash[altKey];
  	      }
  	      return true
  	    }
  	  }
  	  return false
  	}
  
  	/*  */
  
  	// The template compiler attempts to minimize the need for normalization by
  	// statically analyzing the template at compile time.
  	//
  	// For plain HTML markup, normalization can be completely skipped because the
  	// generated render function is guaranteed to return Array<VNode>. There are
  	// two cases where extra normalization is needed:
  
  	// 1. When the children contains components - because a functional component
  	// may return an Array instead of a single root. In this case, just a simple
  	// normalization is needed - if any child is an Array, we flatten the whole
  	// thing with Array.prototype.concat. It is guaranteed to be only 1-level deep
  	// because functional components already normalize their own children.
  	function simpleNormalizeChildren (children) {
  	  for (var i = 0; i < children.length; i++) {
  	    if (Array.isArray(children[i])) {
  	      return Array.prototype.concat.apply([], children)
  	    }
  	  }
  	  return children
  	}
  
  	// 2. When the children contains constructs that always generated nested Arrays,
  	// e.g. <template>, <slot>, v-for, or when the children is provided by user
  	// with hand-written render functions / JSX. In such cases a full normalization
  	// is needed to cater to all possible types of children values.
  	function normalizeChildren (children) {
  	  return isPrimitive(children)
  	    ? [createTextVNode(children)]
  	    : Array.isArray(children)
  	      ? normalizeArrayChildren(children)
  	      : undefined
  	}
  
  	function isTextNode (node) {
  	  return isDef(node) && isDef(node.text) && isFalse(node.isComment)
  	}
  
  	function normalizeArrayChildren (children, nestedIndex) {
  	  var res = [];
  	  var i, c, lastIndex, last;
  	  for (i = 0; i < children.length; i++) {
  	    c = children[i];
  	    if (isUndef(c) || typeof c === 'boolean') { continue }
  	    lastIndex = res.length - 1;
  	    last = res[lastIndex];
  	    //  nested
  	    if (Array.isArray(c)) {
  	      if (c.length > 0) {
  	        c = normalizeArrayChildren(c, ((nestedIndex || '') + "_" + i));
  	        // merge adjacent text nodes
  	        if (isTextNode(c[0]) && isTextNode(last)) {
  	          res[lastIndex] = createTextVNode(last.text + (c[0]).text);
  	          c.shift();
  	        }
  	        res.push.apply(res, c);
  	      }
  	    } else if (isPrimitive(c)) {
  	      if (isTextNode(last)) {
  	        // merge adjacent text nodes
  	        // this is necessary for SSR hydration because text nodes are
  	        // essentially merged when rendered to HTML strings
  	        res[lastIndex] = createTextVNode(last.text + c);
  	      } else if (c !== '') {
  	        // convert primitive to vnode
  	        res.push(createTextVNode(c));
  	      }
  	    } else {
  	      if (isTextNode(c) && isTextNode(last)) {
  	        // merge adjacent text nodes
  	        res[lastIndex] = createTextVNode(last.text + c.text);
  	      } else {
  	        // default key for nested array children (likely generated by v-for)
  	        if (isTrue(children._isVList) &&
  	          isDef(c.tag) &&
  	          isUndef(c.key) &&
  	          isDef(nestedIndex)) {
  	          c.key = "__vlist" + nestedIndex + "_" + i + "__";
  	        }
  	        res.push(c);
  	      }
  	    }
  	  }
  	  return res
  	}
  
  	/*  */
  
  	function ensureCtor (comp, base) {
  	  if (
  	    comp.__esModule ||
  	    (hasSymbol && comp[Symbol.toStringTag] === 'Module')
  	  ) {
  	    comp = comp.default;
  	  }
  	  return isObject(comp)
  	    ? base.extend(comp)
  	    : comp
  	}
  
  	function createAsyncPlaceholder (
  	  factory,
  	  data,
  	  context,
  	  children,
  	  tag
  	) {
  	  var node = createEmptyVNode();
  	  node.asyncFactory = factory;
  	  node.asyncMeta = { data: data, context: context, children: children, tag: tag };
  	  return node
  	}
  
  	function resolveAsyncComponent (
  	  factory,
  	  baseCtor,
  	  context
  	) {
  	  if (isTrue(factory.error) && isDef(factory.errorComp)) {
  	    return factory.errorComp
  	  }
  
  	  if (isDef(factory.resolved)) {
  	    return factory.resolved
  	  }
  
  	  if (isTrue(factory.loading) && isDef(factory.loadingComp)) {
  	    return factory.loadingComp
  	  }
  
  	  if (isDef(factory.contexts)) {
  	    // already pending
  	    factory.contexts.push(context);
  	  } else {
  	    var contexts = factory.contexts = [context];
  	    var sync = true;
  
  	    var forceRender = function () {
  	      for (var i = 0, l = contexts.length; i < l; i++) {
  	        contexts[i].$forceUpdate();
  	      }
  	    };
  
  	    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();
  	      }
  	    });
  
  	    var reject = once(function (reason) {
  	      ("production") !== 'production' && warn(
  	        "Failed to resolve async component: " + (String(factory)) +
  	        (reason ? ("\nReason: " + reason) : '')
  	      );
  	      if (isDef(factory.errorComp)) {
  	        factory.error = true;
  	        forceRender();
  	      }
  	    });
  
  	    var res = factory(resolve, reject);
  
  	    if (isObject(res)) {
  	      if (typeof res.then === 'function') {
  	        // () => Promise
  	        if (isUndef(factory.resolved)) {
  	          res.then(resolve, reject);
  	        }
  	      } else if (isDef(res.component) && typeof res.component.then === 'function') {
  	        res.component.then(resolve, reject);
  
  	        if (isDef(res.error)) {
  	          factory.errorComp = ensureCtor(res.error, baseCtor);
  	        }
  
  	        if (isDef(res.loading)) {
  	          factory.loadingComp = ensureCtor(res.loading, baseCtor);
  	          if (res.delay === 0) {
  	            factory.loading = true;
  	          } else {
  	            setTimeout(function () {
  	              if (isUndef(factory.resolved) && isUndef(factory.error)) {
  	                factory.loading = true;
  	                forceRender();
  	              }
  	            }, res.delay || 200);
  	          }
  	        }
  
  	        if (isDef(res.timeout)) {
  	          setTimeout(function () {
  	            if (isUndef(factory.resolved)) {
  	              reject(
  	                 false
  	                  ? ("timeout (" + (res.timeout) + "ms)")
  	                  : null
  	              );
  	            }
  	          }, res.timeout);
  	        }
  	      }
  	    }
  
  	    sync = false;
  	    // return in case resolved synchronously
  	    return factory.loading
  	      ? factory.loadingComp
  	      : factory.resolved
  	  }
  	}
  
  	/*  */
  
  	function isAsyncPlaceholder (node) {
  	  return node.isComment && node.asyncFactory
  	}
  
  	/*  */
  
  	function getFirstComponentChild (children) {
  	  if (Array.isArray(children)) {
  	    for (var i = 0; i < children.length; i++) {
  	      var c = children[i];
  	      if (isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) {
  	        return c
  	      }
  	    }
  	  }
  	}
  
  	/*  */
  
  	/*  */
  
  	function initEvents (vm) {
  	  vm._events = Object.create(null);
  	  vm._hasHookEvent = false;
  	  // init parent attached events
  	  var listeners = vm.$options._parentListeners;
  	  if (listeners) {
  	    updateComponentListeners(vm, listeners);
  	  }
  	}
  
  	var target;
  
  	function add (event, fn, once) {
  	  if (once) {
  	    target.$once(event, fn);
  	  } else {
  	    target.$on(event, fn);
  	  }
  	}
  
  	function remove$1 (event, fn) {
  	  target.$off(event, fn);
  	}
  
  	function updateComponentListeners (
  	  vm,
  	  listeners,
  	  oldListeners
  	) {
  	  target = vm;
  	  updateListeners(listeners, oldListeners || {}, add, remove$1, vm);
  	  target = undefined;
  	}
  
  	function eventsMixin (Vue) {
  	  var hookRE = /^hook:/;
  	  Vue.prototype.$on = function (event, fn) {
  	    var this$1 = this;
  
  	    var vm = this;
  	    if (Array.isArray(event)) {
  	      for (var i = 0, l = event.length; i < l; i++) {
  	        this$1.$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 this$1 = this;
  
  	    var vm = this;
  	    // all
  	    if (!arguments.length) {
  	      vm._events = Object.create(null);
  	      return vm
  	    }
  	    // array of events
  	    if (Array.isArray(event)) {
  	      for (var i = 0, l = event.length; i < l; i++) {
  	        this$1.$off(event[i], fn);
  	      }
  	      return vm
  	    }
  	    // specific event
  	    var cbs = vm._events[event];
  	    if (!cbs) {
  	      return vm
  	    }
  	    if (!fn) {
  	      vm._events[event] = null;
  	      return vm
  	    }
  	    if (fn) {
  	      // specific handler
  	      var cb;
  	      var i$1 = cbs.length;
  	      while (i$1--) {
  	        cb = cbs[i$1];
  	        if (cb === fn || cb.fn === fn) {
  	          cbs.splice(i$1, 1);
  	          break
  	        }
  	      }
  	    }
  	    return vm
  	  };
  
  	  Vue.prototype.$emit = function (event) {
  	    var vm = this;
  	    if (false) {
  	      var lowerCaseEvent = event.toLowerCase();
  	      if (lowerCaseEvent !== event && vm._events[lowerCaseEvent]) {
  	        tip(
  	          "Event \"" + lowerCaseEvent + "\" is emitted in component " +
  	          (formatComponentName(vm)) + " but the handler is registered for \"" + event + "\". " +
  	          "Note that HTML attributes are case-insensitive and you cannot use " +
  	          "v-on to listen to camelCase events when using in-DOM templates. " +
  	          "You should probably use \"" + (hyphenate(event)) + "\" instead of \"" + event + "\"."
  	        );
  	      }
  	    }
  	    var cbs = vm._events[event];
  	    if (cbs) {
  	      cbs = cbs.length > 1 ? toArray(cbs) : cbs;
  	      var args = toArray(arguments, 1);
  	      for (var i = 0, l = cbs.length; i < l; i++) {
  	        try {
  	          cbs[i].apply(vm, args);
  	        } catch (e) {
  	          handleError(e, vm, ("event handler for \"" + event + "\""));
  	        }
  	      }
  	    }
  	    return vm
  	  };
  	}
  
  	/*  */
  
  
  
  	/**
  	 * Runtime helper for resolving raw children VNodes into a slot object.
  	 */
  	function resolveSlots (
  	  children,
  	  context
  	) {
  	  var slots = {};
  	  if (!children) {
  	    return slots
  	  }
  	  for (var i = 0, l = children.length; i < l; i++) {
  	    var child = children[i];
  	    var data = child.data;
  	    // remove slot attribute if the node is resolved as a Vue slot node
  	    if (data && data.attrs && data.attrs.slot) {
  	      delete data.attrs.slot;
  	    }
  	    // named slots should only be respected if the vnode was rendered in the
  	    // same context.
  	    if ((child.context === context || child.fnContext === context) &&
  	      data && data.slot != null
  	    ) {
  	      var name = data.slot;
  	      var slot = (slots[name] || (slots[name] = []));
  	      if (child.tag === 'template') {
  	        slot.push.apply(slot, child.children || []);
  	      } else {
  	        slot.push(child);
  	      }
  	    } else {
  	      (slots.default || (slots.default = [])).push(child);
  	    }
  	  }
  	  // ignore slots that contains only whitespace
  	  for (var name$1 in slots) {
  	    if (slots[name$1].every(isWhitespace)) {
  	      delete slots[name$1];
  	    }
  	  }
  	  return slots
  	}
  
  	function isWhitespace (node) {
  	  return (node.isComment && !node.asyncFactory) || node.text === ' '
  	}
  
  	function resolveScopedSlots (
  	  fns, // see flow/vnode
  	  res
  	) {
  	  res = res || {};
  	  for (var i = 0; i < fns.length; i++) {
  	    if (Array.isArray(fns[i])) {
  	      resolveScopedSlots(fns[i], res);
  	    } else {
  	      res[fns[i].key] = fns[i].fn;
  	    }
  	  }
  	  return res
  	}
  
  	/*  */
  
  	var activeInstance = null;
  	var isUpdatingChildComponent = false;
  
  	function 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;
  	    if (vm._isMounted) {
  	      callHook(vm, 'beforeUpdate');
  	    }
  	    var prevEl = vm.$el;
  	    var prevVnode = vm._vnode;
  	    var prevActiveInstance = activeInstance;
  	    activeInstance = vm;
  	    vm._vnode = vnode;
  	    // Vue.prototype.__patch__ is injected in entry points
  	    // based on the rendering backend used.
  	    if (!prevVnode) {
  	      // initial render
  	      vm.$el = vm.__patch__(
  	        vm.$el, vnode, hydrating, false /* removeOnly */,
  	        vm.$options._parentElm,
  	        vm.$options._refElm
  	      );
  	      // no need for the ref nodes after initial patch
  	      // this prevents keeping a detached DOM tree in memory (#5851)
  	      vm.$options._parentElm = vm.$options._refElm = null;
  	    } else {
  	      // updates
  	      vm.$el = vm.__patch__(prevVnode, vnode);
  	    }
  	    activeInstance = prevActiveInstance;
  	    // update __vue__ reference
  	    if (prevEl) {
  	      prevEl.__vue__ = null;
  	    }
  	    if (vm.$el) {
  	      vm.$el.__vue__ = vm;
  	    }
  	    // if parent is an HOC, update its $el as well
  	    if (vm.$vnode && vm.$parent && vm.$vnode === vm.$parent._vnode) {
  	      vm.$parent.$el = vm.$el;
  	    }
  	    // updated hook is called by the scheduler to ensure that children are
  	    // updated in a parent's updated hook.
  	  };
  
  	  Vue.prototype.$forceUpdate = function () {
  	    var vm = this;
  	    if (vm._watcher) {
  	      vm._watcher.update();
  	    }
  	  };
  
  	  Vue.prototype.$destroy = function () {
  	    var vm = this;
  	    if (vm._isBeingDestroyed) {
  	      return
  	    }
  	    callHook(vm, 'beforeDestroy');
  	    vm._isBeingDestroyed = true;
  	    // remove self from parent
  	    var parent = vm.$parent;
  	    if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) {
  	      remove(parent.$children, vm);
  	    }
  	    // teardown watchers
  	    if (vm._watcher) {
  	      vm._watcher.teardown();
  	    }
  	    var i = vm._watchers.length;
  	    while (i--) {
  	      vm._watchers[i].teardown();
  	    }
  	    // remove reference from data ob
  	    // frozen object may not have observer.
  	    if (vm._data.__ob__) {
  	      vm._data.__ob__.vmCount--;
  	    }
  	    // call the last hook...
  	    vm._isDestroyed = true;
  	    // invoke destroy hooks on current rendered tree
  	    vm.__patch__(vm._vnode, null);
  	    // fire destroyed hook
  	    callHook(vm, 'destroyed');
  	    // turn off all instance listeners.
  	    vm.$off();
  	    // remove __vue__ reference
  	    if (vm.$el) {
  	      vm.$el.__vue__ = null;
  	    }
  	    // release circular reference (#6759)
  	    if (vm.$vnode) {
  	      vm.$vnode.parent = null;
  	    }
  	  };
  	}
  
  	function mountComponent (
  	  vm,
  	  el,
  	  hydrating
  	) {
  	  vm.$el = el;
  	  if (!vm.$options.render) {
  	    vm.$options.render = createEmptyVNode;
  	    if (false) {
  	      /* istanbul ignore if */
  	      if ((vm.$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 (false) {
  	    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, null, true /* isRenderWatcher */);
  	  hydrating = false;
  
  	  // manually mounted instance, call mounted on self
  	  // mounted is called for render-created child components in its inserted hook
  	  if (vm.$vnode == null) {
  	    vm._isMounted = true;
  	    callHook(vm, 'mounted');
  	  }
  	  return vm
  	}
  
  	function updateChildComponent (
  	  vm,
  	  propsData,
  	  listeners,
  	  parentVnode,
  	  renderChildren
  	) {
  	  if (false) {
  	    isUpdatingChildComponent = true;
  	  }
  
  	  // determine whether component has slot children
  	  // we need to do this before overwriting $options._renderChildren
  	  var hasChildren = !!(
  	    renderChildren ||               // has new static slots
  	    vm.$options._renderChildren ||  // has old static slots
  	    parentVnode.data.scopedSlots || // has new scoped slots
  	    vm.$scopedSlots !== emptyObject // has old scoped slots
  	  );
  
  	  vm.$options._parentVnode = parentVnode;
  	  vm.$vnode = parentVnode; // update vm's placeholder node without re-render
  
  	  if (vm._vnode) { // update child tree's parent
  	    vm._vnode.parent = parentVnode;
  	  }
  	  vm.$options._renderChildren = renderChildren;
  
  	  // update $attrs and $listeners hash
  	  // these are also reactive so they may trigger child update if the child
  	  // used them during render
  	  vm.$attrs = parentVnode.data.attrs || emptyObject;
  	  vm.$listeners = listeners || emptyObject;
  
  	  // update props
  	  if (propsData && vm.$options.props) {
  	    toggleObserving(false);
  	    var props = vm._props;
  	    var propKeys = vm.$options._propKeys || [];
  	    for (var i = 0; i < propKeys.length; i++) {
  	      var key = propKeys[i];
  	      var propOptions = vm.$options.props; // wtf flow?
  	      props[key] = validateProp(key, propOptions, propsData, vm);
  	    }
  	    toggleObserving(true);
  	    // keep a copy of raw propsData
  	    vm.$options.propsData = propsData;
  	  }
  
  	  // update listeners
  	  listeners = listeners || emptyObject;
  	  var oldListeners = vm.$options._parentListeners;
  	  vm.$options._parentListeners = listeners;
  	  updateComponentListeners(vm, listeners, oldListeners);
  
  	  // resolve slots + force update if has children
  	  if (hasChildren) {
  	    vm.$slots = resolveSlots(renderChildren, parentVnode.context);
  	    vm.$forceUpdate();
  	  }
  
  	  if (false) {
  	    isUpdatingChildComponent = false;
  	  }
  	}
  
  	function isInInactiveTree (vm) {
  	  while (vm && (vm = vm.$parent)) {
  	    if (vm._inactive) { return true }
  	  }
  	  return false
  	}
  
  	function activateChildComponent (vm, direct) {
  	  if (direct) {
  	    vm._directInactive = false;
  	    if (isInInactiveTree(vm)) {
  	      return
  	    }
  	  } else if (vm._directInactive) {
  	    return
  	  }
  	  if (vm._inactive || vm._inactive === null) {
  	    vm._inactive = false;
  	    for (var i = 0; i < vm.$children.length; i++) {
  	      activateChildComponent(vm.$children[i]);
  	    }
  	    callHook(vm, 'activated');
  	  }
  	}
  
  	function deactivateChildComponent (vm, direct) {
  	  if (direct) {
  	    vm._directInactive = true;
  	    if (isInInactiveTree(vm)) {
  	      return
  	    }
  	  }
  	  if (!vm._inactive) {
  	    vm._inactive = true;
  	    for (var i = 0; i < vm.$children.length; i++) {
  	      deactivateChildComponent(vm.$children[i]);
  	    }
  	    callHook(vm, 'deactivated');
  	  }
  	}
  
  	function callHook (vm, hook) {
  	  // #7573 disable dep collection when invoking lifecycle hooks
  	  pushTarget();
  	  var handlers = vm.$options[hook];
  	  if (handlers) {
  	    for (var i = 0, j = handlers.length; i < j; i++) {
  	      try {
  	        handlers[i].call(vm);
  	      } catch (e) {
  	        handleError(e, vm, (hook + " hook"));
  	      }
  	    }
  	  }
  	  if (vm._hasHookEvent) {
  	    vm.$emit('hook:' + hook);
  	  }
  	  popTarget();
  	}
  
  	/*  */
  
  
  	var MAX_UPDATE_COUNT = 100;
  
  	var queue = [];
  	var activatedChildren = [];
  	var has = {};
  	var circular = {};
  	var waiting = false;
  	var flushing = false;
  	var index = 0;
  
  	/**
  	 * Reset the scheduler's state.
  	 */
  	function resetSchedulerState () {
  	  index = queue.length = activatedChildren.length = 0;
  	  has = {};
  	  if (false) {
  	    circular = {};
  	  }
  	  waiting = flushing = false;
  	}
  
  	/**
  	 * Flush both queues and run the watchers.
  	 */
  	function flushSchedulerQueue () {
  	  flushing = true;
  	  var watcher, id;
  
  	  // Sort queue before flush.
  	  // This ensures that:
  	  // 1. Components are updated from parent to child. (because parent is always
  	  //    created before the child)
  	  // 2. A component's user watchers are run before its render watcher (because
  	  //    user watchers are created before the render watcher)
  	  // 3. If a component is destroyed during a parent component's watcher run,
  	  //    its watchers can be skipped.
  	  queue.sort(function (a, b) { return a.id - b.id; });
  
  	  // do not cache length because more watchers might be pushed
  	  // as we run existing watchers
  	  for (index = 0; index < queue.length; index++) {
  	    watcher = queue[index];
  	    id = watcher.id;
  	    has[id] = null;
  	    watcher.run();
  	    // in dev build, check and stop circular updates.
  	    if (false) {
  	      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) {
  	      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;
  	      nextTick(flushSchedulerQueue);
  	    }
  	  }
  	}
  
  	/*  */
  
  	var uid$1 = 0;
  
  	/**
  	 * A watcher parses an expression, collects dependencies,
  	 * and fires callback when the expression value changes.
  	 * This is used for both the $watch() api and directives.
  	 */
  	var Watcher = function Watcher (
  	  vm,
  	  expOrFn,
  	  cb,
  	  options,
  	  isRenderWatcher
  	) {
  	  this.vm = vm;
  	  if (isRenderWatcher) {
  	    vm._watcher = this;
  	  }
  	  vm._watchers.push(this);
  	  // options
  	  if (options) {
  	    this.deep = !!options.deep;
  	    this.user = !!options.user;
  	    this.lazy = !!options.lazy;
  	    this.sync = !!options.sync;
  	  } else {
  	    this.deep = this.user = this.lazy = this.sync = false;
  	  }
  	  this.cb = cb;
  	  this.id = ++uid$1; // uid for batching
  	  this.active = true;
  	  this.dirty = this.lazy; // for lazy watchers
  	  this.deps = [];
  	  this.newDeps = [];
  	  this.depIds = new _Set();
  	  this.newDepIds = new _Set();
  	  this.expression =  false
  	    ? expOrFn.toString()
  	    : '';
  	  // parse expression for getter
  	  if (typeof expOrFn === 'function') {
  	    this.getter = expOrFn;
  	  } else {
  	    this.getter = parsePath(expOrFn);
  	    if (!this.getter) {
  	      this.getter = function () {};
  	      ("production") !== 'production' && warn(
  	        "Failed watching path: \"" + expOrFn + "\" " +
  	        'Watcher only accepts simple dot-delimited paths. ' +
  	        'For full control, use a function instead.',
  	        vm
  	      );
  	    }
  	  }
  	  this.value = this.lazy
  	    ? undefined
  	    : this.get();
  	};
  
  	/**
  	 * Evaluate the getter, and re-collect dependencies.
  	 */
  	Watcher.prototype.get = function get () {
  	  pushTarget(this);
  	  var value;
  	  var vm = this.vm;
  	  try {
  	    value = this.getter.call(vm, vm);
  	  } catch (e) {
  	    if (this.user) {
  	      handleError(e, vm, ("getter for watcher \"" + (this.expression) + "\""));
  	    } else {
  	      throw e
  	    }
  	  } finally {
  	    // "touch" every property so they are all tracked as
  	    // dependencies for deep watching
  	    if (this.deep) {
  	      traverse(value);
  	    }
  	    popTarget();
  	    this.cleanupDeps();
  	  }
  	  return value
  	};
  
  	/**
  	 * Add a dependency to this directive.
  	 */
  	Watcher.prototype.addDep = function addDep (dep) {
  	  var id = dep.id;
  	  if (!this.newDepIds.has(id)) {
  	    this.newDepIds.add(id);
  	    this.newDeps.push(dep);
  	    if (!this.depIds.has(id)) {
  	      dep.addSub(this);
  	    }
  	  }
  	};
  
  	/**
  	 * Clean up for dependency collection.
  	 */
  	Watcher.prototype.cleanupDeps = function cleanupDeps () {
  	    var this$1 = this;
  
  	  var i = this.deps.length;
  	  while (i--) {
  	    var dep = this$1.deps[i];
  	    if (!this$1.newDepIds.has(dep.id)) {
  	      dep.removeSub(this$1);
  	    }
  	  }
  	  var tmp = this.depIds;
  	  this.depIds = this.newDepIds;
  	  this.newDepIds = tmp;
  	  this.newDepIds.clear();
  	  tmp = this.deps;
  	  this.deps = this.newDeps;
  	  this.newDeps = tmp;
  	  this.newDeps.length = 0;
  	};
  
  	/**
  	 * Subscriber interface.
  	 * Will be called when a dependency changes.
  	 */
  	Watcher.prototype.update = function update () {
  	  /* istanbul ignore else */
  	  if (this.lazy) {
  	    this.dirty = true;
  	  } else if (this.sync) {
  	    this.run();
  	  } else {
  	    queueWatcher(this);
  	  }
  	};
  
  	/**
  	 * Scheduler job interface.
  	 * Will be called by the scheduler.
  	 */
  	Watcher.prototype.run = function run () {
  	  if (this.active) {
  	    var value = this.get();
  	    if (
  	      value !== this.value ||
  	      // Deep watchers and watchers on Object/Arrays should fire even
  	      // when the value is the same, because the value may
  	      // have mutated.
  	      isObject(value) ||
  	      this.deep
  	    ) {
  	      // set new value
  	      var oldValue = this.value;
  	      this.value = value;
  	      if (this.user) {
  	        try {
  	          this.cb.call(this.vm, value, oldValue);
  	        } catch (e) {
  	          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 this$1 = this;
  
  	  var i = this.deps.length;
  	  while (i--) {
  	    this$1.deps[i].depend();
  	  }
  	};
  
  	/**
  	 * Remove self from all dependencies' subscriber list.
  	 */
  	Watcher.prototype.teardown = function teardown () {
  	    var this$1 = this;
  
  	  if (this.active) {
  	    // remove self from vm's watcher list
  	    // this is a somewhat expensive operation so we skip it
  	    // if the vm is being destroyed.
  	    if (!this.vm._isBeingDestroyed) {
  	      remove(this.vm._watchers, this);
  	    }
  	    var i = this.deps.length;
  	    while (i--) {
  	      this$1.deps[i].removeSub(this$1);
  	    }
  	    this.active = false;
  	  }
  	};
  
  	/*  */
  
  	var sharedPropertyDefinition = {
  	  enumerable: true,
  	  configurable: true,
  	  get: noop,
  	  set: noop
  	};
  
  	function proxy (target, sourceKey, key) {
  	  sharedPropertyDefinition.get = function proxyGetter () {
  	    return this[sourceKey][key]
  	  };
  	  sharedPropertyDefinition.set = function proxySetter (val) {
  	    this[sourceKey][key] = val;
  	  };
  	  Object.defineProperty(target, key, sharedPropertyDefinition);
  	}
  
  	function initState (vm) {
  	  vm._watchers = [];
  	  var opts = vm.$options;
  	  if (opts.props) { initProps(vm, opts.props); }
  	  if (opts.methods) { initMethods(vm, opts.methods); }
  	  if (opts.data) {
  	    initData(vm);
  	  } else {
  	    observe(vm._data = {}, true /* asRootData */);
  	  }
  	  if (opts.computed) { initComputed(vm, opts.computed); }
  	  if (opts.watch && opts.watch !== nativeWatch) {
  	    initWatch(vm, opts.watch);
  	  }
  	}
  
  	function initProps (vm, propsOptions) {
  	  var propsData = vm.$options.propsData || {};
  	  var props = vm._props = {};
  	  // cache prop keys so that future props updates can iterate using Array
  	  // instead of dynamic object key enumeration.
  	  var keys = vm.$options._propKeys = [];
  	  var isRoot = !vm.$parent;
  	  // root instance props should be converted
  	  if (!isRoot) {
  	    toggleObserving(false);
  	  }
  	  var loop = function ( key ) {
  	    keys.push(key);
  	    var value = validateProp(key, propsOptions, propsData, vm);
  	    /* istanbul ignore else */
  	    if (false) {
  	      var hyphenatedKey = hyphenate(key);
  	      if (isReservedAttribute(hyphenatedKey) ||
  	          config.isReservedAttr(hyphenatedKey)) {
  	        warn(
  	          ("\"" + hyphenatedKey + "\" is a reserved attribute and cannot be used as component prop."),
  	          vm
  	        );
  	      }
  	      defineReactive(props, key, value, function () {
  	        if (vm.$parent && !isUpdatingChildComponent) {
  	          warn(
  	            "Avoid mutating a prop directly since the value will be " +
  	            "overwritten whenever the parent component re-renders. " +
  	            "Instead, use a data or computed property based on the prop's " +
  	            "value. Prop being mutated: \"" + key + "\"",
  	            vm
  	          );
  	        }
  	      });
  	    } else {
  	      defineReactive(props, key, value);
  	    }
  	    // static props are already proxied on the component's prototype
  	    // during Vue.extend(). We only need to proxy props defined at
  	    // instantiation here.
  	    if (!(key in vm)) {
  	      proxy(vm, "_props", key);
  	    }
  	  };
  
  	  for (var key in propsOptions) loop( key );
  	  toggleObserving(true);
  	}
  
  	function initData (vm) {
  	  var data = vm.$options.data;
  	  data = vm._data = typeof data === 'function'
  	    ? getData(data, vm)
  	    : data || {};
  	  if (!isPlainObject(data)) {
  	    data = {};
  	    ("production") !== 'production' && warn(
  	      'data functions should return an object:\n' +
  	      'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function',
  	      vm
  	    );
  	  }
  	  // proxy data on instance
  	  var keys = Object.keys(data);
  	  var props = vm.$options.props;
  	  var methods = vm.$options.methods;
  	  var i = keys.length;
  	  while (i--) {
  	    var key = keys[i];
  	    if (false) {
  	      if (methods && hasOwn(methods, key)) {
  	        warn(
  	          ("Method \"" + key + "\" has already been defined as a data property."),
  	          vm
  	        );
  	      }
  	    }
  	    if (props && hasOwn(props, key)) {
  	      ("production") !== 'production' && warn(
  	        "The data property \"" + key + "\" is already declared as a prop. " +
  	        "Use prop default value instead.",
  	        vm
  	      );
  	    } else if (!isReserved(key)) {
  	      proxy(vm, "_data", key);
  	    }
  	  }
  	  // observe data
  	  observe(data, true /* asRootData */);
  	}
  
  	function getData (data, vm) {
  	  // #7573 disable dep collection when invoking data getters
  	  pushTarget();
  	  try {
  	    return data.call(vm, vm)
  	  } catch (e) {
  	    handleError(e, vm, "data()");
  	    return {}
  	  } finally {
  	    popTarget();
  	  }
  	}
  
  	var computedWatcherOptions = { lazy: true };
  
  	function initComputed (vm, computed) {
  	  // $flow-disable-line
  	  var watchers = vm._computedWatchers = Object.create(null);
  	  // computed properties are just getters during SSR
  	  var isSSR = isServerRendering();
  
  	  for (var key in computed) {
  	    var userDef = computed[key];
  	    var getter = typeof userDef === 'function' ? userDef : userDef.get;
  	    if (false) {
  	      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 (false) {
  	      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)
  	      : userDef;
  	    sharedPropertyDefinition.set = noop;
  	  } else {
  	    sharedPropertyDefinition.get = userDef.get
  	      ? shouldCache && userDef.cache !== false
  	        ? createComputedGetter(key)
  	        : userDef.get
  	      : noop;
  	    sharedPropertyDefinition.set = userDef.set
  	      ? userDef.set
  	      : noop;
  	  }
  	  if (false) {
  	    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 initMethods (vm, methods) {
  	  var props = vm.$options.props;
  	  for (var key in methods) {
  	    if (false) {
  	      if (methods[key] == null) {
  	        warn(
  	          "Method \"" + key + "\" has an undefined value 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] = methods[key] == null ? noop : bind(methods[key], vm);
  	  }
  	}
  
  	function initWatch (vm, watch) {
  	  for (var key in watch) {
  	    var handler = watch[key];
  	    if (Array.isArray(handler)) {
  	      for (var i = 0; i < handler.length; i++) {
  	        createWatcher(vm, key, handler[i]);
  	      }
  	    } else {
  	      createWatcher(vm, key, handler);
  	    }
  	  }
  	}
  
  	function createWatcher (
  	  vm,
  	  expOrFn,
  	  handler,
  	  options
  	) {
  	  if (isPlainObject(handler)) {
  	    options = handler;
  	    handler = handler.handler;
  	  }
  	  if (typeof handler === 'string') {
  	    handler = vm[handler];
  	  }
  	  return vm.$watch(expOrFn, handler, options)
  	}
  
  	function stateMixin (Vue) {
  	  // flow somehow has problems with directly declared definition object
  	  // when using Object.defineProperty, so we have to procedurally build up
  	  // the object here.
  	  var dataDef = {};
  	  dataDef.get = function () { return this._data };
  	  var propsDef = {};
  	  propsDef.get = function () { return this._props };
  	  if (false) {
  	    dataDef.set = function (newData) {
  	      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) {
  	      cb.call(vm, watcher.value);
  	    }
  	    return function unwatchFn () {
  	      watcher.teardown();
  	    }
  	  };
  	}
  
  	/*  */
  
  	function initProvide (vm) {
  	  var provide = vm.$options.provide;
  	  if (provide) {
  	    vm._provided = typeof provide === 'function'
  	      ? provide.call(vm)
  	      : provide;
  	  }
  	}
  
  	function initInjections (vm) {
  	  var result = resolveInject(vm.$options.inject, vm);
  	  if (result) {
  	    toggleObserving(false);
  	    Object.keys(result).forEach(function (key) {
  	      /* istanbul ignore else */
  	      if (false) {
  	        defineReactive(vm, key, result[key], function () {
  	          warn(
  	            "Avoid mutating an injected value directly since the changes will be " +
  	            "overwritten whenever the provided component re-renders. " +
  	            "injection being mutated: \"" + key + "\"",
  	            vm
  	          );
  	        });
  	      } else {
  	        defineReactive(vm, key, result[key]);
  	      }
  	    });
  	    toggleObserving(true);
  	  }
  	}
  
  	function resolveInject (inject, vm) {
  	  if (inject) {
  	    // inject is :any because flow is not smart enough to figure out cached
  	    var result = Object.create(null);
  	    var keys = hasSymbol
  	      ? Reflect.ownKeys(inject).filter(function (key) {
  	        /* istanbul ignore next */
  	        return Object.getOwnPropertyDescriptor(inject, key).enumerable
  	      })
  	      : Object.keys(inject);
  
  	    for (var i = 0; i < keys.length; i++) {
  	      var key = keys[i];
  	      var provideKey = inject[key].from;
  	      var source = vm;
  	      while (source) {
  	        if (source._provided && hasOwn(source._provided, provideKey)) {
  	          result[key] = source._provided[provideKey];
  	          break
  	        }
  	        source = source.$parent;
  	      }
  	      if (!source) {
  	        if ('default' in inject[key]) {
  	          var provideDefault = inject[key].default;
  	          result[key] = typeof provideDefault === 'function'
  	            ? provideDefault.call(vm)
  	            : provideDefault;
  	        } else if (false) {
  	          warn(("Injection \"" + key + "\" not found"), vm);
  	        }
  	      }
  	    }
  	    return result
  	  }
  	}
  
  	/*  */
  
  	/**
  	 * Runtime helper for rendering v-for lists.
  	 */
  	function renderList (
  	  val,
  	  render
  	) {
  	  var ret, i, l, keys, key;
  	  if (Array.isArray(val) || typeof val === 'string') {
  	    ret = new Array(val.length);
  	    for (i = 0, l = val.length; i < l; i++) {
  	      ret[i] = render(val[i], i);
  	    }
  	  } else if (typeof val === 'number') {
  	    ret = new Array(val);
  	    for (i = 0; i < val; i++) {
  	      ret[i] = render(i + 1, i);
  	    }
  	  } else if (isObject(val)) {
  	    keys = Object.keys(val);
  	    ret = new Array(keys.length);
  	    for (i = 0, l = keys.length; i < l; i++) {
  	      key = keys[i];
  	      ret[i] = render(val[key], key, i);
  	    }
  	  }
  	  if (isDef(ret)) {
  	    (ret)._isVList = true;
  	  }
  	  return ret
  	}
  
  	/*  */
  
  	/**
  	 * Runtime helper for rendering <slot>
  	 */
  	function renderSlot (
  	  name,
  	  fallback,
  	  props,
  	  bindObject
  	) {
  	  var scopedSlotFn = this.$scopedSlots[name];
  	  var nodes;
  	  if (scopedSlotFn) { // scoped slot
  	    props = props || {};
  	    if (bindObject) {
  	      if (false) {
  	        warn(
  	          'slot v-bind without argument expects an Object',
  	          this
  	        );
  	      }
  	      props = extend(extend({}, bindObject), props);
  	    }
  	    nodes = scopedSlotFn(props) || fallback;
  	  } else {
  	    var slotNodes = this.$slots[name];
  	    // warn duplicate slot usage
  	    if (slotNodes) {
  	      if (false) {
  	        warn(
  	          "Duplicate presence of slot \"" + name + "\" found in the same render tree " +
  	          "- this will likely cause render errors.",
  	          this
  	        );
  	      }
  	      slotNodes._rendered = true;
  	    }
  	    nodes = slotNodes || 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)) {
  	      ("production") !== 'production' && warn(
  	        'v-bind without argument expects an Object or Array value',
  	        this
  	      );
  	    } else {
  	      if (Array.isArray(value)) {
  	        value = toObject(value);
  	      }
  	      var hash;
  	      var loop = function ( key ) {
  	        if (
  	          key === 'class' ||
  	          key === 'style' ||
  	          isReservedAttribute(key)
  	        ) {
  	          hash = data;
  	        } else {
  	          var type = data.attrs && data.attrs.type;
  	          hash = asProp || config.mustUseProp(tag, type, key)
  	            ? data.domProps || (data.domProps = {})
  	            : data.attrs || (data.attrs = {});
  	        }
  	        if (!(key 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)) {
  	      ("production") !== 'production' && warn(
  	        'v-on without argument expects an Object value',
  	        this
  	      );
  	    } else {
  	      var on = data.on = data.on ? extend({}, data.on) : {};
  	      for (var key in value) {
  	        var existing = on[key];
  	        var ours = value[key];
  	        on[key] = existing ? [].concat(existing, ours) : ours;
  	      }
  	    }
  	  }
  	  return data
  	}
  
  	/*  */
  
  	function installRenderHelpers (target) {
  	  target._o = markOnce;
  	  target._n = toNumber;
  	  target._s = toString;
  	  target._l = renderList;
  	  target._t = renderSlot;
  	  target._q = looseEqual;
  	  target._i = looseIndexOf;
  	  target._m = renderStatic;
  	  target._f = resolveFilter;
  	  target._k = checkKeyCodes;
  	  target._b = bindObjectProps;
  	  target._v = createTextVNode;
  	  target._e = createEmptyVNode;
  	  target._u = resolveScopedSlots;
  	  target._g = bindObjectListeners;
  	}
  
  	/*  */
  
  	function FunctionalRenderContext (
  	  data,
  	  props,
  	  children,
  	  parent,
  	  Ctor
  	) {
  	  var options = Ctor.options;
  	  // ensure the createElement function in functional components
  	  // gets a unique context - this is necessary for correct named slot check
  	  var contextVm;
  	  if (hasOwn(parent, '_uid')) {
  	    contextVm = Object.create(parent);
  	    // $flow-disable-line
  	    contextVm._original = parent;
  	  } else {
  	    // the context vm passed in is a functional context as well.
  	    // in this case we want to make sure we are able to get a hold to the
  	    // real context instance.
  	    contextVm = parent;
  	    // $flow-disable-line
  	    parent = parent._original;
  	  }
  	  var isCompiled = isTrue(options._compiled);
  	  var needNormalization = !isCompiled;
  
  	  this.data = data;
  	  this.props = props;
  	  this.children = children;
  	  this.parent = parent;
  	  this.listeners = data.on || emptyObject;
  	  this.injections = resolveInject(options.inject, parent);
  	  this.slots = function () { return resolveSlots(children, parent); };
  
  	  // support for compiled functional template
  	  if (isCompiled) {
  	    // exposing $options for renderStatic()
  	    this.$options = options;
  	    // pre-resolve slots for renderSlot()
  	    this.$slots = this.slots();
  	    this.$scopedSlots = data.scopedSlots || emptyObject;
  	  }
  
  	  if (options._scopeId) {
  	    this._c = function (a, b, c, d) {
  	      var vnode = createElement(contextVm, a, b, c, d, needNormalization);
  	      if (vnode && !Array.isArray(vnode)) {
  	        vnode.fnScopeId = options._scopeId;
  	        vnode.fnContext = parent;
  	      }
  	      return vnode
  	    };
  	  } else {
  	    this._c = function (a, b, c, d) { return createElement(contextVm, a, b, c, d, needNormalization); };
  	  }
  	}
  
  	installRenderHelpers(FunctionalRenderContext.prototype);
  
  	function createFunctionalComponent (
  	  Ctor,
  	  propsData,
  	  data,
  	  contextVm,
  	  children
  	) {
  	  var options = Ctor.options;
  	  var props = {};
  	  var propOptions = options.props;
  	  if (isDef(propOptions)) {
  	    for (var key in propOptions) {
  	      props[key] = validateProp(key, propOptions, propsData || emptyObject);
  	    }
  	  } else {
  	    if (isDef(data.attrs)) { mergeProps(props, data.attrs); }
  	    if (isDef(data.props)) { mergeProps(props, data.props); }
  	  }
  
  	  var renderContext = new FunctionalRenderContext(
  	    data,
  	    props,
  	    children,
  	    contextVm,
  	    Ctor
  	  );
  
  	  var vnode = options.render.call(null, renderContext._c, renderContext);
  
  	  if (vnode instanceof VNode) {
  	    return cloneAndMarkFunctionalResult(vnode, data, renderContext.parent, options)
  	  } 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);
  	    }
  	    return res
  	  }
  	}
  
  	function cloneAndMarkFunctionalResult (vnode, data, contextVm, options) {
  	  // #7817 clone node before setting fnContext, otherwise if the node is reused
  	  // (e.g. it was from a cached normal slot) the fnContext causes named slots
  	  // that should not be matched to match.
  	  var clone = cloneVNode(vnode);
  	  clone.fnContext = contextVm;
  	  clone.fnOptions = options;
  	  if (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];
  	  }
  	}
  
  	/*  */
  
  
  
  
  	// Register the component hook to weex native render engine.
  	// The hook will be triggered by native, not javascript.
  
  
  	// Updates the state of the component to weex native render engine.
  
  	/*  */
  
  	// https://github.com/Hanks10100/weex-native-directive/tree/master/component
  
  	// listening on native callback
  
  	/*  */
  
  	/*  */
  
  	// inline hooks to be invoked on component VNodes during patch
  	var componentVNodeHooks = {
  	  init: function init (
  	    vnode,
  	    hydrating,
  	    parentElm,
  	    refElm
  	  ) {
  	    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,
  	        parentElm,
  	        refElm
  	      );
  	      child.$mount(hydrating ? vnode.elm : undefined, hydrating);
  	    }
  	  },
  
  	  prepatch: function prepatch (oldVnode, vnode) {
  	    var options = vnode.componentOptions;
  	    var child = vnode.componentInstance = oldVnode.componentInstance;
  	    updateChildComponent(
  	      child,
  	      options.propsData, // updated props
  	      options.listeners, // updated listeners
  	      vnode, // new parent vnode
  	      options.children // new children
  	    );
  	  },
  
  	  insert: function insert (vnode) {
  	    var context = vnode.context;
  	    var componentInstance = vnode.componentInstance;
  	    if (!componentInstance._isMounted) {
  	      componentInstance._isMounted = true;
  	      callHook(componentInstance, 'mounted');
  	    }
  	    if (vnode.data.keepAlive) {
  	      if (context._isMounted) {
  	        // vue-router#1212
  	        // During updates, a kept-alive component's child components may
  	        // change, so directly walking the tree here may call activated hooks
  	        // on incorrect children. Instead we push them into a queue which will
  	        // be processed after the whole patch process ended.
  	        queueActivatedComponent(componentInstance);
  	      } else {
  	        activateChildComponent(componentInstance, true /* direct */);
  	      }
  	    }
  	  },
  
  	  destroy: function destroy (vnode) {
  	    var componentInstance = vnode.componentInstance;
  	    if (!componentInstance._isDestroyed) {
  	      if (!vnode.data.keepAlive) {
  	        componentInstance.$destroy();
  	      } else {
  	        deactivateChildComponent(componentInstance, true /* direct */);
  	      }
  	    }
  	  }
  	};
  
  	var hooksToMerge = Object.keys(componentVNodeHooks);
  
  	function createComponent (
  	  Ctor,
  	  data,
  	  context,
  	  children,
  	  tag
  	) {
  	  if (isUndef(Ctor)) {
  	    return
  	  }
  
  	  var baseCtor = context.$options._base;
  
  	  // plain options object: turn it into a constructor
  	  if (isObject(Ctor)) {
  	    Ctor = baseCtor.extend(Ctor);
  	  }
  
  	  // if at this stage it's not a constructor or an async component factory,
  	  // reject.
  	  if (typeof Ctor !== 'function') {
  	    if (false) {
  	      warn(("Invalid Component definition: " + (String(Ctor))), context);
  	    }
  	    return
  	  }
  
  	  // async component
  	  var asyncFactory;
  	  if (isUndef(Ctor.cid)) {
  	    asyncFactory = Ctor;
  	    Ctor = resolveAsyncComponent(asyncFactory, baseCtor, context);
  	    if (Ctor === undefined) {
  	      // return a placeholder node for async component, which is rendered
  	      // as a comment node but preserves all the raw information for the node.
  	      // the information will be used for async server-rendering and hydration.
  	      return createAsyncPlaceholder(
  	        asyncFactory,
  	        data,
  	        context,
  	        children,
  	        tag
  	      )
  	    }
  	  }
  
  	  data = data || {};
  
  	  // resolve constructor options in case global mixins are applied after
  	  // component constructor creation
  	  resolveConstructorOptions(Ctor);
  
  	  // transform component v-model data into props & events
  	  if (isDef(data.model)) {
  	    transformModel(Ctor.options, data);
  	  }
  
  	  // extract props
  	  var propsData = extractPropsFromVNodeData(data, Ctor, tag);
  
  	  // functional component
  	  if (isTrue(Ctor.options.functional)) {
  	    return createFunctionalComponent(Ctor, propsData, data, context, children)
  	  }
  
  	  // extract listeners, since these needs to be treated as
  	  // child component listeners instead of DOM listeners
  	  var listeners = data.on;
  	  // replace with listeners with .native modifier
  	  // so it gets processed during parent component patch.
  	  data.on = data.nativeOn;
  
  	  if (isTrue(Ctor.options.abstract)) {
  	    // abstract components do not keep anything
  	    // other than props & listeners & slot
  
  	    // work around flow
  	    var slot = data.slot;
  	    data = {};
  	    if (slot) {
  	      data.slot = slot;
  	    }
  	  }
  
  	  // install component management hooks onto the placeholder node
  	  installComponentHooks(data);
  
  	  // return a placeholder vnode
  	  var name = Ctor.options.name || tag;
  	  var vnode = new VNode(
  	    ("vue-component-" + (Ctor.cid) + (name ? ("-" + name) : '')),
  	    data, undefined, undefined, undefined, context,
  	    { Ctor: Ctor, propsData: propsData, listeners: listeners, tag: tag, children: children },
  	    asyncFactory
  	  );
  
  	  // Weex specific: invoke recycle-list optimized @render function for
  	  // extracting cell-slot template.
  	  // https://github.com/Hanks10100/weex-native-directive/tree/master/component
  	  /* istanbul ignore if */
  	  return vnode
  	}
  
  	function createComponentInstanceForVnode (
  	  vnode, // we know it's MountedComponentVNode but flow doesn't
  	  parent, // activeInstance in lifecycle state
  	  parentElm,
  	  refElm
  	) {
  	  var options = {
  	    _isComponent: true,
  	    parent: parent,
  	    _parentVnode: vnode,
  	    _parentElm: parentElm || null,
  	    _refElm: refElm || null
  	  };
  	  // 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];
  	    hooks[key] = componentVNodeHooks[key];
  	  }
  	}
  
  	// transform component v-model info (value and callback) into
  	// prop and event handler respectively.
  	function transformModel (options, data) {
  	  var prop = (options.model && options.model.prop) || 'value';
  	  var event = (options.model && options.model.event) || 'input';(data.props || (data.props = {}))[prop] = data.model.value;
  	  var on = data.on || (data.on = {});
  	  if (isDef(on[event])) {
  	    on[event] = [data.model.callback].concat(on[event]);
  	  } else {
  	    on[event] = data.model.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__)) {
  	    ("production") !== 'production' && warn(
  	      "Avoid using observed data object as vnode data: " + (JSON.stringify(data)) + "\n" +
  	      'Always create fresh vnode data objects in each render!',
  	      context
  	    );
  	    return createEmptyVNode()
  	  }
  	  // object syntax in v-bind
  	  if (isDef(data) && isDef(data.is)) {
  	    tag = data.is;
  	  }
  	  if (!tag) {
  	    // in case of component :is set to falsy value
  	    return createEmptyVNode()
  	  }
  	  // warn against non-primitive key
  	  if (false
  	  ) {
  	    {
  	      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 (isDef(Ctor = resolveAsset(context.$options, 'components', tag))) {
  	      // component
  	      vnode = createComponent(Ctor, data, context, children, tag);
  	    } else {
  	      // unknown or unlisted namespaced elements
  	      // check at runtime because it may get assigned a namespace when its
  	      // parent normalizes children
  	      vnode = new VNode(
  	        tag, data, children,
  	        undefined, undefined, context
  	      );
  	    }
  	  } else {
  	    // direct component options / constructor
  	    vnode = createComponent(tag, data, context, children);
  	  }
  	  if (Array.isArray(vnode)) {
  	    return vnode
  	  } else if (isDef(vnode)) {
  	    if (isDef(ns)) { applyNS(vnode, ns); }
  	    if (isDef(data)) { registerDeepBindings(data); }
  	    return vnode
  	  } else {
  	    return createEmptyVNode()
  	  }
  	}
  
  	function applyNS (vnode, ns, force) {
  	  vnode.ns = ns;
  	  if (vnode.tag === 'foreignObject') {
  	    // use default namespace inside foreignObject
  	    ns = undefined;
  	    force = true;
  	  }
  	  if (isDef(vnode.children)) {
  	    for (var i = 0, l = vnode.children.length; i < l; i++) {
  	      var child = vnode.children[i];
  	      if (isDef(child.tag) && (
  	        isUndef(child.ns) || (isTrue(force) && child.tag !== 'svg'))) {
  	        applyNS(child, ns, force);
  	      }
  	    }
  	  }
  	}
  
  	// ref #5318
  	// necessary to ensure parent re-render when deep bindings like :style and
  	// :class are used on slot nodes
  	function registerDeepBindings (data) {
  	  if (isObject(data.style)) {
  	    traverse(data.style);
  	  }
  	  if (isObject(data.class)) {
  	    traverse(data.class);
  	  }
  	}
  
  	/*  */
  
  	function initRender (vm) {
  	  vm._vnode = null; // the root of the child tree
  	  vm._staticTrees = null; // v-once cached trees
  	  var options = vm.$options;
  	  var parentVnode = vm.$vnode = options._parentVnode; // the placeholder node in parent tree
  	  var renderContext = parentVnode && parentVnode.context;
  	  vm.$slots = resolveSlots(options._renderChildren, renderContext);
  	  vm.$scopedSlots = emptyObject;
  	  // bind the createElement fn to this instance
  	  // so that we get proper render context inside it.
  	  // args order: tag, data, children, normalizationType, alwaysNormalize
  	  // internal version is used by render functions compiled from templates
  	  vm._c = function (a, b, c, d) { return createElement(vm, a, b, c, d, false); };
  	  // normalization is always applied for the public version, used in
  	  // user-written render functions.
  	  vm.$createElement = function (a, b, c, d) { return createElement(vm, a, b, c, d, true); };
  
  	  // $attrs & $listeners are exposed for easier HOC creation.
  	  // they need to be reactive so that HOCs using them are always updated
  	  var parentData = parentVnode && parentVnode.data;
  
  	  /* istanbul ignore else */
  	  if (false) {
  	    defineReactive(vm, '$attrs', parentData && parentData.attrs || emptyObject, function () {
  	      !isUpdatingChildComponent && warn("$attrs is readonly.", vm);
  	    }, true);
  	    defineReactive(vm, '$listeners', options._parentListeners || emptyObject, function () {
  	      !isUpdatingChildComponent && warn("$listeners is readonly.", vm);
  	    }, true);
  	  } else {
  	    defineReactive(vm, '$attrs', parentData && parentData.attrs || emptyObject, null, true);
  	    defineReactive(vm, '$listeners', options._parentListeners || emptyObject, null, true);
  	  }
  	}
  
  	function renderMixin (Vue) {
  	  // install runtime convenience helpers
  	  installRenderHelpers(Vue.prototype);
  
  	  Vue.prototype.$nextTick = function (fn) {
  	    return nextTick(fn, this)
  	  };
  
  	  Vue.prototype._render = function () {
  	    var vm = this;
  	    var ref = vm.$options;
  	    var render = ref.render;
  	    var _parentVnode = ref._parentVnode;
  
  	    // reset _rendered flag on slots for duplicate slot check
  	    if (false) {
  	      for (var key in vm.$slots) {
  	        // $flow-disable-line
  	        vm.$slots[key]._rendered = false;
  	      }
  	    }
  
  	    if (_parentVnode) {
  	      vm.$scopedSlots = _parentVnode.data.scopedSlots || emptyObject;
  	    }
  
  	    // set parent vnode. this allows render functions to have access
  	    // to the data on the placeholder node.
  	    vm.$vnode = _parentVnode;
  	    // render self
  	    var vnode;
  	    try {
  	      vnode = render.call(vm._renderProxy, vm.$createElement);
  	    } catch (e) {
  	      handleError(e, vm, "render");
  	      // return error render result,
  	      // or previous vnode to prevent render error causing blank component
  	      /* istanbul ignore else */
  	      if (false) {
  	        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;
  	        }
  	      } else {
  	        vnode = vm._vnode;
  	      }
  	    }
  	    // return empty vnode in case the render function errored out
  	    if (!(vnode instanceof VNode)) {
  	      if (false) {
  	        warn(
  	          'Multiple root nodes returned from render function. Render function ' +
  	          'should return a single root node.',
  	          vm
  	        );
  	      }
  	      vnode = createEmptyVNode();
  	    }
  	    // set parent
  	    vnode.parent = _parentVnode;
  	    return vnode
  	  };
  	}
  
  	/*  */
  
  	var uid$3 = 0;
  
  	function initMixin (Vue) {
  	  Vue.prototype._init = function (options) {
  	    var vm = this;
  	    // a uid
  	    vm._uid = uid$3++;
  
  	    var startTag, endTag;
  	    /* istanbul ignore if */
  	    if (false) {
  	      startTag = "vue-perf-start:" + (vm._uid);
  	      endTag = "vue-perf-end:" + (vm._uid);
  	      mark(startTag);
  	    }
  
  	    // a flag to avoid this being observed
  	    vm._isVue = true;
  	    // merge options
  	    if (options && options._isComponent) {
  	      // optimize internal component instantiation
  	      // since dynamic options merging is pretty slow, and none of the
  	      // internal component options needs special treatment.
  	      initInternalComponent(vm, options);
  	    } else {
  	      vm.$options = mergeOptions(
  	        resolveConstructorOptions(vm.constructor),
  	        options || {},
  	        vm
  	      );
  	    }
  	    /* istanbul ignore else */
  	    if (false) {
  	      initProxy(vm);
  	    } else {
  	      vm._renderProxy = vm;
  	    }
  	    // expose real self
  	    vm._self = vm;
  	    initLifecycle(vm);
  	    initEvents(vm);
  	    initRender(vm);
  	    callHook(vm, 'beforeCreate');
  	    initInjections(vm); // resolve injections before data/props
  	    initState(vm);
  	    initProvide(vm); // resolve provide after data/props
  	    callHook(vm, 'created');
  
  	    /* istanbul ignore if */
  	    if (false) {
  	      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;
  	  opts._parentElm = options._parentElm;
  	  opts._refElm = options._refElm;
  
  	  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 extended = Ctor.extendOptions;
  	  var sealed = Ctor.sealedOptions;
  	  for (var key in latest) {
  	    if (latest[key] !== sealed[key]) {
  	      if (!modified) { modified = {}; }
  	      modified[key] = dedupe(latest[key], extended[key], sealed[key]);
  	    }
  	  }
  	  return modified
  	}
  
  	function dedupe (latest, extended, sealed) {
  	  // compare latest and sealed to ensure lifecycle hooks won't be duplicated
  	  // between merges
  	  if (Array.isArray(latest)) {
  	    var res = [];
  	    sealed = Array.isArray(sealed) ? sealed : [sealed];
  	    extended = Array.isArray(extended) ? extended : [extended];
  	    for (var i = 0; i < latest.length; i++) {
  	      // push original options and not sealed options to exclude duplicated options
  	      if (extended.indexOf(latest[i]) >= 0 || sealed.indexOf(latest[i]) < 0) {
  	        res.push(latest[i]);
  	      }
  	    }
  	    return res
  	  } else {
  	    return latest
  	  }
  	}
  
  	function Vue (options) {
  	  if (false
  	  ) {
  	    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 (false) {
  	      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 (false) {
  	          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 () {
  	    var this$1 = this;
  
  	    for (var key in this$1.cache) {
  	      pruneCacheEntry(this$1.cache, key, this$1.keys);
  	    }
  	  },
  
  	  mounted: function mounted () {
  	    var this$1 = this;
  
  	    this.$watch('include', function (val) {
  	      pruneCache(this$1, function (name) { return matches(val, name); });
  	    });
  	    this.$watch('exclude', function (val) {
  	      pruneCache(this$1, function (name) { return !matches(val, name); });
  	    });
  	  },
  
  	  render: function render () {
  	    var slot = this.$slots.default;
  	    var vnode = getFirstComponentChild(slot);
  	    var componentOptions = vnode && vnode.componentOptions;
  	    if (componentOptions) {
  	      // check pattern
  	      var name = getComponentName(componentOptions);
  	      var ref = this;
  	      var include = ref.include;
  	      var exclude = ref.exclude;
  	      if (
  	        // not included
  	        (include && (!name || !matches(include, name))) ||
  	        // excluded
  	        (exclude && name && matches(exclude, name))
  	      ) {
  	        return vnode
  	      }
  
  	      var ref$1 = this;
  	      var cache = ref$1.cache;
  	      var keys = ref$1.keys;
  	      var key = vnode.key == null
  	        // same constructor may get registered as different local components
  	        // so cid alone is not enough (#3269)
  	        ? componentOptions.Ctor.cid + (componentOptions.tag ? ("::" + (componentOptions.tag)) : '')
  	        : vnode.key;
  	      if (cache[key]) {
  	        vnode.componentInstance = cache[key].componentInstance;
  	        // make current key freshest
  	        remove(keys, key);
  	        keys.push(key);
  	      } else {
  	        cache[key] = vnode;
  	        keys.push(key);
  	        // prune oldest entry
  	        if (this.max && keys.length > parseInt(this.max)) {
  	          pruneCacheEntry(cache, keys[0], keys, this._vnode);
  	        }
  	      }
  
  	      vnode.data.keepAlive = true;
  	    }
  	    return vnode || (slot && slot[0])
  	  }
  	}
  
  	var builtInComponents = {
  	  KeepAlive: KeepAlive
  	}
  
  	/*  */
  
  	function initGlobalAPI (Vue) {
  	  // config
  	  var configDef = {};
  	  configDef.get = function () { return config; };
  	  if (false) {
  	    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
  	  };
  
  	  Vue.set = set;
  	  Vue.delete = del;
  	  Vue.nextTick = nextTick;
  
  	  Vue.options = Object.create(null);
  	  ASSET_TYPES.forEach(function (type) {
  	    Vue.options[type + 's'] = Object.create(null);
  	  });
  
  	  // this is used to identify the "base" constructor to extend all plain-object
  	  // components with in Weex's multi-instance scenarios.
  	  Vue.options._base = Vue;
  
  	  extend(Vue.options.components, builtInComponents);
  
  	  initUse(Vue);
  	  initMixin$1(Vue);
  	  initExtend(Vue);
  	  initAssetRegisters(Vue);
  	}
  
  	initGlobalAPI(Vue);
  
  	Object.defineProperty(Vue.prototype, '$isServer', {
  	  get: isServerRendering
  	});
  
  	Object.defineProperty(Vue.prototype, '$ssrContext', {
  	  get: function get () {
  	    /* istanbul ignore next */
  	    return this.$vnode && this.$vnode.ssrContext
  	  }
  	});
  
  	// expose FunctionalRenderContext for ssr runtime helper installation
  	Object.defineProperty(Vue, 'FunctionalRenderContext', {
  	  value: FunctionalRenderContext
  	});
  
  	Vue.version = '2.5.16';
  
  	/*  */
  
  	// these are reserved for web because they are directly compiled away
  	// during template compilation
  	var isReservedAttr = makeMap('style,class');
  
  	// attributes that should be using props for binding
  	var acceptValue = makeMap('input,textarea,option,select,progress');
  	var mustUseProp = function (tag, type, attr) {
  	  return (
  	    (attr === 'value' && acceptValue(tag)) && type !== 'button' ||
  	    (attr === 'selected' && tag === 'option') ||
  	    (attr === 'checked' && tag === 'input') ||
  	    (attr === 'muted' && tag === 'video')
  	  )
  	};
  
  	var isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck');
  
  	var isBooleanAttr = makeMap(
  	  'allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' +
  	  'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' +
  	  'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' +
  	  'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' +
  	  'required,reversed,scoped,seamless,selected,sortable,translate,' +
  	  'truespeed,typemustmatch,visible'
  	);
  
  	var xlinkNS = 'http://www.w3.org/1999/xlink';
  
  	var isXlink = function (name) {
  	  return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink'
  	};
  
  	var getXlinkProp = function (name) {
  	  return isXlink(name) ? name.slice(6, name.length) : ''
  	};
  
  	var isFalsyAttrValue = function (val) {
  	  return val == null || val === false
  	};
  
  	/*  */
  
  	function genClassForVnode (vnode) {
  	  var data = vnode.data;
  	  var parentNode = vnode;
  	  var childNode = vnode;
  	  while (isDef(childNode.componentInstance)) {
  	    childNode = childNode.componentInstance._vnode;
  	    if (childNode && childNode.data) {
  	      data = mergeClassData(childNode.data, data);
  	    }
  	  }
  	  while (isDef(parentNode = parentNode.parent)) {
  	    if (parentNode && parentNode.data) {
  	      data = mergeClassData(data, parentNode.data);
  	    }
  	  }
  	  return renderClass(data.staticClass, data.class)
  	}
  
  	function mergeClassData (child, parent) {
  	  return {
  	    staticClass: concat(child.staticClass, parent.staticClass),
  	    class: isDef(child.class)
  	      ? [child.class, parent.class]
  	      : parent.class
  	  }
  	}
  
  	function renderClass (
  	  staticClass,
  	  dynamicClass
  	) {
  	  if (isDef(staticClass) || isDef(dynamicClass)) {
  	    return concat(staticClass, stringifyClass(dynamicClass))
  	  }
  	  /* istanbul ignore next */
  	  return ''
  	}
  
  	function concat (a, b) {
  	  return a ? b ? (a + ' ' + b) : a : (b || '')
  	}
  
  	function stringifyClass (value) {
  	  if (Array.isArray(value)) {
  	    return stringifyArray(value)
  	  }
  	  if (isObject(value)) {
  	    return stringifyObject(value)
  	  }
  	  if (typeof value === 'string') {
  	    return value
  	  }
  	  /* istanbul ignore next */
  	  return ''
  	}
  
  	function stringifyArray (value) {
  	  var res = '';
  	  var stringified;
  	  for (var i = 0, l = value.length; i < l; i++) {
  	    if (isDef(stringified = stringifyClass(value[i])) && stringified !== '') {
  	      if (res) { res += ' '; }
  	      res += stringified;
  	    }
  	  }
  	  return res
  	}
  
  	function stringifyObject (value) {
  	  var res = '';
  	  for (var key in value) {
  	    if (value[key]) {
  	      if (res) { res += ' '; }
  	      res += key;
  	    }
  	  }
  	  return res
  	}
  
  	/*  */
  
  	var namespaceMap = {
  	  svg: 'http://www.w3.org/2000/svg',
  	  math: 'http://www.w3.org/1998/Math/MathML'
  	};
  
  	var isHTMLTag = makeMap(
  	  'html,body,base,head,link,meta,style,title,' +
  	  'address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,' +
  	  'div,dd,dl,dt,figcaption,figure,picture,hr,img,li,main,ol,p,pre,ul,' +
  	  'a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,' +
  	  's,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video,' +
  	  'embed,object,param,source,canvas,script,noscript,del,ins,' +
  	  'caption,col,colgroup,table,thead,tbody,td,th,tr,' +
  	  'button,datalist,fieldset,form,input,label,legend,meter,optgroup,option,' +
  	  'output,progress,select,textarea,' +
  	  'details,dialog,menu,menuitem,summary,' +
  	  'content,element,shadow,template,blockquote,iframe,tfoot'
  	);
  
  	// this map is intentionally selective, only covering SVG elements that may
  	// contain child elements.
  	var isSVG = makeMap(
  	  'svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,font-face,' +
  	  'foreignObject,g,glyph,image,line,marker,mask,missing-glyph,path,pattern,' +
  	  'polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view',
  	  true
  	);
  
  	var isPreTag = function (tag) { return tag === 'pre'; };
  
  	var isReservedTag = function (tag) {
  	  return isHTMLTag(tag) || isSVG(tag)
  	};
  
  	function getTagNamespace (tag) {
  	  if (isSVG(tag)) {
  	    return 'svg'
  	  }
  	  // basic support for MathML
  	  // note it doesn't support other MathML elements being component roots
  	  if (tag === 'math') {
  	    return 'math'
  	  }
  	}
  
  	var unknownElementCache = Object.create(null);
  	function isUnknownElement (tag) {
  	  /* istanbul ignore if */
  	  if (!inBrowser) {
  	    return true
  	  }
  	  if (isReservedTag(tag)) {
  	    return false
  	  }
  	  tag = tag.toLowerCase();
  	  /* istanbul ignore if */
  	  if (unknownElementCache[tag] != null) {
  	    return unknownElementCache[tag]
  	  }
  	  var el = document.createElement(tag);
  	  if (tag.indexOf('-') > -1) {
  	    // http://stackoverflow.com/a/28210364/1070244
  	    return (unknownElementCache[tag] = (
  	      el.constructor === window.HTMLUnknownElement ||
  	      el.constructor === window.HTMLElement
  	    ))
  	  } else {
  	    return (unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString()))
  	  }
  	}
  
  	var isTextInputType = makeMap('text,number,password,search,email,tel,url');
  
  	/*  */
  
  	/**
  	 * Query an element selector if it's not an element already.
  	 */
  	function query (el) {
  	  if (typeof el === 'string') {
  	    var selected = document.querySelector(el);
  	    if (!selected) {
  	      ("production") !== 'production' && warn(
  	        'Cannot find element: ' + el
  	      );
  	      return document.createElement('div')
  	    }
  	    return selected
  	  } else {
  	    return el
  	  }
  	}
  
  	/*  */
  
  	function createElement$1 (tagName, vnode) {
  	  var elm = document.createElement(tagName);
  	  if (tagName !== 'select') {
  	    return elm
  	  }
  	  // false or null will remove the attribute but undefined will not
  	  if (vnode.data && vnode.data.attrs && vnode.data.attrs.multiple !== undefined) {
  	    elm.setAttribute('multiple', 'multiple');
  	  }
  	  return elm
  	}
  
  	function createElementNS (namespace, tagName) {
  	  return document.createElementNS(namespaceMap[namespace], tagName)
  	}
  
  	function createTextNode (text) {
  	  return document.createTextNode(text)
  	}
  
  	function createComment (text) {
  	  return document.createComment(text)
  	}
  
  	function insertBefore (parentNode, newNode, referenceNode) {
  	  parentNode.insertBefore(newNode, referenceNode);
  	}
  
  	function removeChild (node, child) {
  	  node.removeChild(child);
  	}
  
  	function appendChild (node, child) {
  	  node.appendChild(child);
  	}
  
  	function parentNode (node) {
  	  return node.parentNode
  	}
  
  	function nextSibling (node) {
  	  return node.nextSibling
  	}
  
  	function tagName (node) {
  	  return node.tagName
  	}
  
  	function setTextContent (node, text) {
  	  node.textContent = text;
  	}
  
  	function setStyleScope (node, scopeId) {
  	  node.setAttribute(scopeId, '');
  	}
  
  
  	var nodeOps = 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 () {
  	      if (--remove.listeners === 0) {
  	        removeNode(childElm);
  	      }
  	    }
  	    remove.listeners = listeners;
  	    return remove
  	  }
  
  	  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 (false) {
  	        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 (false) {
  	        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 */, parentElm, refElm);
  	      }
  	      // after calling the init hook, if the vnode is a child component
  	      // it should've created a child instance and mounted it. the child
  	      // component also has set the placeholder vnode's elm.
  	      // in that case we can just return the element and be done.
  	      if (isDef(vnode.componentInstance)) {
  	        initComponent(vnode, insertedVnodeQueue);
  	        if (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 (ref$$1.parentNode === parent) {
  	          nodeOps.insertBefore(parent, elm, ref$$1);
  	        }
  	      } else {
  	        nodeOps.appendChild(parent, elm);
  	      }
  	    }
  	  }
  
  	  function createChildren (vnode, children, insertedVnodeQueue) {
  	    if (Array.isArray(children)) {
  	      if (false) {
  	        checkDuplicateKeys(children);
  	      }
  	      for (var i = 0; i < children.length; ++i) {
  	        createElm(children[i], insertedVnodeQueue, vnode.elm, null, true, children, i);
  	      }
  	    } else if (isPrimitive(vnode.text)) {
  	      nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(String(vnode.text)));
  	    }
  	  }
  
  	  function isPatchable (vnode) {
  	    while (vnode.componentInstance) {
  	      vnode = vnode.componentInstance._vnode;
  	    }
  	    return isDef(vnode.tag)
  	  }
  
  	  function invokeCreateHooks (vnode, insertedVnodeQueue) {
  	    for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
  	      cbs.create[i$1](emptyNode, vnode);
  	    }
  	    i = vnode.data.hook; // Reuse variable
  	    if (isDef(i)) {
  	      if (isDef(i.create)) { i.create(emptyNode, vnode); }
  	      if (isDef(i.insert)) { insertedVnodeQueue.push(vnode); }
  	    }
  	  }
  
  	  // set scope id attribute for scoped CSS.
  	  // this is implemented as a special case to avoid the overhead
  	  // of going through the normal attribute patching process.
  	  function setScope (vnode) {
  	    var i;
  	    if (isDef(i = vnode.fnScopeId)) {
  	      nodeOps.setStyleScope(vnode.elm, i);
  	    } else {
  	      var ancestor = vnode;
  	      while (ancestor) {
  	        if (isDef(i = ancestor.context) && isDef(i = i.$options._scopeId)) {
  	          nodeOps.setStyleScope(vnode.elm, i);
  	        }
  	        ancestor = ancestor.parent;
  	      }
  	    }
  	    // for slot content they should also get the scopeId from the host instance.
  	    if (isDef(i = activeInstance) &&
  	      i !== vnode.context &&
  	      i !== vnode.fnContext &&
  	      isDef(i = i.$options._scopeId)
  	    ) {
  	      nodeOps.setStyleScope(vnode.elm, i);
  	    }
  	  }
  
  	  function addVnodes (parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) {
  	    for (; startIdx <= endIdx; ++startIdx) {
  	      createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm, false, vnodes, startIdx);
  	    }
  	  }
  
  	  function invokeDestroyHook (vnode) {
  	    var i, j;
  	    var data = vnode.data;
  	    if (isDef(data)) {
  	      if (isDef(i = data.hook) && isDef(i = i.destroy)) { i(vnode); }
  	      for (i = 0; i < cbs.destroy.length; ++i) { cbs.destroy[i](vnode); }
  	    }
  	    if (isDef(i = vnode.children)) {
  	      for (j = 0; j < vnode.children.length; ++j) {
  	        invokeDestroyHook(vnode.children[j]);
  	      }
  	    }
  	  }
  
  	  function removeVnodes (parentElm, vnodes, startIdx, endIdx) {
  	    for (; startIdx <= endIdx; ++startIdx) {
  	      var ch = vnodes[startIdx];
  	      if (isDef(ch)) {
  	        if (isDef(ch.tag)) {
  	          removeAndInvokeRemoveHook(ch);
  	          invokeDestroyHook(ch);
  	        } else { // Text node
  	          removeNode(ch.elm);
  	        }
  	      }
  	    }
  	  }
  
  	  function removeAndInvokeRemoveHook (vnode, rm) {
  	    if (isDef(rm) || isDef(vnode.data)) {
  	      var i;
  	      var listeners = cbs.remove.length + 1;
  	      if (isDef(rm)) {
  	        // we have a recursively passed down rm callback
  	        // increase the listeners count
  	        rm.listeners += listeners;
  	      } else {
  	        // directly removing
  	        rm = createRmCb(vnode.elm, listeners);
  	      }
  	      // recursively invoke hooks on child component root node
  	      if (isDef(i = vnode.componentInstance) && isDef(i = i._vnode) && isDef(i.data)) {
  	        removeAndInvokeRemoveHook(i, rm);
  	      }
  	      for (i = 0; i < cbs.remove.length; ++i) {
  	        cbs.remove[i](vnode, rm);
  	      }
  	      if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) {
  	        i(vnode, rm);
  	      } else {
  	        rm();
  	      }
  	    } else {
  	      removeNode(vnode.elm);
  	    }
  	  }
  
  	  function updateChildren (parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) {
  	    var oldStartIdx = 0;
  	    var newStartIdx = 0;
  	    var oldEndIdx = oldCh.length - 1;
  	    var oldStartVnode = oldCh[0];
  	    var oldEndVnode = oldCh[oldEndIdx];
  	    var newEndIdx = newCh.length - 1;
  	    var newStartVnode = newCh[0];
  	    var newEndVnode = newCh[newEndIdx];
  	    var oldKeyToIdx, idxInOld, vnodeToMove, refElm;
  
  	    // removeOnly is a special flag used only by <transition-group>
  	    // to ensure removed elements stay in correct relative positions
  	    // during leaving transitions
  	    var canMove = !removeOnly;
  
  	    if (false) {
  	      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);
  	        oldStartVnode = oldCh[++oldStartIdx];
  	        newStartVnode = newCh[++newStartIdx];
  	      } else if (sameVnode(oldEndVnode, newEndVnode)) {
  	        patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue);
  	        oldEndVnode = oldCh[--oldEndIdx];
  	        newEndVnode = newCh[--newEndIdx];
  	      } else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right
  	        patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue);
  	        canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm));
  	        oldStartVnode = oldCh[++oldStartIdx];
  	        newEndVnode = newCh[--newEndIdx];
  	      } else if (sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left
  	        patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue);
  	        canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm);
  	        oldEndVnode = oldCh[--oldEndIdx];
  	        newStartVnode = newCh[++newStartIdx];
  	      } else {
  	        if (isUndef(oldKeyToIdx)) { oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx); }
  	        idxInOld = isDef(newStartVnode.key)
  	          ? oldKeyToIdx[newStartVnode.key]
  	          : 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);
  	            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, removeOnly) {
  	    if (oldVnode === vnode) {
  	      return
  	    }
  
  	    var elm = vnode.elm = oldVnode.elm;
  
  	    if (isTrue(oldVnode.isAsyncPlaceholder)) {
  	      if (isDef(vnode.asyncFactory.resolved)) {
  	        hydrate(oldVnode.elm, vnode, insertedVnodeQueue);
  	      } else {
  	        vnode.isAsyncPlaceholder = true;
  	      }
  	      return
  	    }
  
  	    // reuse element for static trees.
  	    // note we only do this if the vnode is cloned -
  	    // if the new node is not cloned it means the render functions have been
  	    // reset by the hot-reload-api and we need to do a proper re-render.
  	    if (isTrue(vnode.isStatic) &&
  	      isTrue(oldVnode.isStatic) &&
  	      vnode.key === oldVnode.key &&
  	      (isTrue(vnode.isCloned) || isTrue(vnode.isOnce))
  	    ) {
  	      vnode.componentInstance = oldVnode.componentInstance;
  	      return
  	    }
  
  	    var i;
  	    var data = vnode.data;
  	    if (isDef(data) && isDef(i = data.hook) && isDef(i = i.prepatch)) {
  	      i(oldVnode, vnode);
  	    }
  
  	    var oldCh = oldVnode.children;
  	    var ch = vnode.children;
  	    if (isDef(data) && isPatchable(vnode)) {
  	      for (i = 0; i < cbs.update.length; ++i) { cbs.update[i](oldVnode, vnode); }
  	      if (isDef(i = data.hook) && isDef(i = i.update)) { i(oldVnode, vnode); }
  	    }
  	    if (isUndef(vnode.text)) {
  	      if (isDef(oldCh) && isDef(ch)) {
  	        if (oldCh !== ch) { updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly); }
  	      } else if (isDef(ch)) {
  	        if (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 (false) {
  	      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 (false
  	              ) {
  	                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 (false
  	              ) {
  	                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, parentElm, refElm) {
  	    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, parentElm, refElm);
  	    } else {
  	      var isRealElement = isDef(oldVnode.nodeType);
  	      if (!isRealElement && sameVnode(oldVnode, vnode)) {
  	        // patch existing root node
  	        patchVnode(oldVnode, vnode, insertedVnodeQueue, removeOnly);
  	      } else {
  	        if (isRealElement) {
  	          // mounting to a real element
  	          // check if this is server-rendered content and if we can perform
  	          // a successful hydration.
  	          if (oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) {
  	            oldVnode.removeAttribute(SSR_ATTR);
  	            hydrating = true;
  	          }
  	          if (isTrue(hydrating)) {
  	            if (hydrate(oldVnode, vnode, insertedVnodeQueue)) {
  	              invokeInsertHook(vnode, insertedVnodeQueue, true);
  	              return oldVnode
  	            } else if (false) {
  	              warn(
  	                'The client-side rendered virtual DOM tree is not matching ' +
  	                'server-rendered content. This is likely caused by incorrect ' +
  	                'HTML markup, for example nesting block-level elements inside ' +
  	                '<p>, or missing <tbody>. Bailing hydration and performing ' +
  	                'full client-side render.'
  	              );
  	            }
  	          }
  	          // either not server-rendered, or hydration failed.
  	          // create an empty node and replace it
  	          oldVnode = emptyNodeAt(oldVnode);
  	        }
  
  	        // replacing existing element
  	        var oldElm = oldVnode.elm;
  	        var parentElm$1 = nodeOps.parentNode(oldElm);
  
  	        // 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$1,
  	          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$1)) {
  	          removeVnodes(parentElm$1, [oldVnode], 0, 0);
  	        } else if (isDef(oldVnode.tag)) {
  	          invokeDestroyHook(oldVnode);
  	        }
  	      }
  	    }
  
  	    invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch);
  	    return vnode.elm
  	  }
  	}
  
  	/*  */
  
  	var directives = {
  	  create: updateDirectives,
  	  update: updateDirectives,
  	  destroy: function unbindDirectives (vnode) {
  	    updateDirectives(vnode, emptyNode);
  	  }
  	}
  
  	function updateDirectives (oldVnode, vnode) {
  	  if (oldVnode.data.directives || vnode.data.directives) {
  	    _update(oldVnode, vnode);
  	  }
  	}
  
  	function _update (oldVnode, vnode) {
  	  var isCreate = oldVnode === emptyNode;
  	  var isDestroy = vnode === emptyNode;
  	  var oldDirs = normalizeDirectives$1(oldVnode.data.directives, oldVnode.context);
  	  var newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context);
  
  	  var dirsWithInsert = [];
  	  var dirsWithPostpatch = [];
  
  	  var key, oldDir, dir;
  	  for (key in newDirs) {
  	    oldDir = oldDirs[key];
  	    dir = newDirs[key];
  	    if (!oldDir) {
  	      // new directive, bind
  	      callHook$1(dir, 'bind', vnode, oldVnode);
  	      if (dir.def && dir.def.inserted) {
  	        dirsWithInsert.push(dir);
  	      }
  	    } else {
  	      // existing directive, update
  	      dir.oldValue = oldDir.value;
  	      callHook$1(dir, 'update', vnode, oldVnode);
  	      if (dir.def && dir.def.componentUpdated) {
  	        dirsWithPostpatch.push(dir);
  	      }
  	    }
  	  }
  
  	  if (dirsWithInsert.length) {
  	    var callInsert = function () {
  	      for (var i = 0; i < dirsWithInsert.length; i++) {
  	        callHook$1(dirsWithInsert[i], 'inserted', vnode, oldVnode);
  	      }
  	    };
  	    if (isCreate) {
  	      mergeVNodeHook(vnode, 'insert', callInsert);
  	    } else {
  	      callInsert();
  	    }
  	  }
  
  	  if (dirsWithPostpatch.length) {
  	    mergeVNodeHook(vnode, 'postpatch', function () {
  	      for (var i = 0; i < dirsWithPostpatch.length; i++) {
  	        callHook$1(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode);
  	      }
  	    });
  	  }
  
  	  if (!isCreate) {
  	    for (key in oldDirs) {
  	      if (!newDirs[key]) {
  	        // no longer present, unbind
  	        callHook$1(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy);
  	      }
  	    }
  	  }
  	}
  
  	var emptyModifiers = Object.create(null);
  
  	function normalizeDirectives$1 (
  	  dirs,
  	  vm
  	) {
  	  var res = Object.create(null);
  	  if (!dirs) {
  	    // $flow-disable-line
  	    return res
  	  }
  	  var i, dir;
  	  for (i = 0; i < dirs.length; i++) {
  	    dir = dirs[i];
  	    if (!dir.modifiers) {
  	      // $flow-disable-line
  	      dir.modifiers = emptyModifiers;
  	    }
  	    res[getRawDirName(dir)] = dir;
  	    dir.def = resolveAsset(vm.$options, 'directives', dir.name, true);
  	  }
  	  // $flow-disable-line
  	  return res
  	}
  
  	function getRawDirName (dir) {
  	  return dir.rawName || ((dir.name) + "." + (Object.keys(dir.modifiers || {}).join('.')))
  	}
  
  	function callHook$1 (dir, hook, vnode, oldVnode, isDestroy) {
  	  var fn = dir.def && dir.def[hook];
  	  if (fn) {
  	    try {
  	      fn(vnode.elm, dir, vnode, oldVnode, isDestroy);
  	    } catch (e) {
  	      handleError(e, vnode.context, ("directive " + (dir.name) + " " + hook + " hook"));
  	    }
  	  }
  	}
  
  	var baseModules = [
  	  ref,
  	  directives
  	]
  
  	/*  */
  
  	function updateAttrs (oldVnode, vnode) {
  	  var opts = vnode.componentOptions;
  	  if (isDef(opts) && opts.Ctor.options.inheritAttrs === false) {
  	    return
  	  }
  	  if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {
  	    return
  	  }
  	  var key, cur, old;
  	  var elm = vnode.elm;
  	  var oldAttrs = oldVnode.data.attrs || {};
  	  var attrs = vnode.data.attrs || {};
  	  // clone observed objects, as the user probably wants to mutate it
  	  if (isDef(attrs.__ob__)) {
  	    attrs = vnode.data.attrs = extend({}, attrs);
  	  }
  
  	  for (key in attrs) {
  	    cur = attrs[key];
  	    old = oldAttrs[key];
  	    if (old !== cur) {
  	      setAttr(elm, key, cur);
  	    }
  	  }
  	  // #4391: in IE9, setting type can reset value for input[type=radio]
  	  // #6666: IE/Edge forces progress value down to 1 before setting a max
  	  /* istanbul ignore if */
  	  if ((isIE || isEdge) && attrs.value !== oldAttrs.value) {
  	    setAttr(elm, 'value', attrs.value);
  	  }
  	  for (key in oldAttrs) {
  	    if (isUndef(attrs[key])) {
  	      if (isXlink(key)) {
  	        elm.removeAttributeNS(xlinkNS, getXlinkProp(key));
  	      } else if (!isEnumeratedAttr(key)) {
  	        elm.removeAttribute(key);
  	      }
  	    }
  	  }
  	}
  
  	function setAttr (el, key, value) {
  	  if (el.tagName.indexOf('-') > -1) {
  	    baseSetAttr(el, key, value);
  	  } else if (isBooleanAttr(key)) {
  	    // set attribute for blank value
  	    // e.g. <option disabled>Select one</option>
  	    if (isFalsyAttrValue(value)) {
  	      el.removeAttribute(key);
  	    } else {
  	      // technically allowfullscreen is a boolean attribute for <iframe>,
  	      // but Flash expects a value of "true" when used on <embed> tag
  	      value = key === 'allowfullscreen' && el.tagName === 'EMBED'
  	        ? 'true'
  	        : key;
  	      el.setAttribute(key, value);
  	    }
  	  } else if (isEnumeratedAttr(key)) {
  	    el.setAttribute(key, isFalsyAttrValue(value) || value === 'false' ? 'false' : 'true');
  	  } else if (isXlink(key)) {
  	    if (isFalsyAttrValue(value)) {
  	      el.removeAttributeNS(xlinkNS, getXlinkProp(key));
  	    } else {
  	      el.setAttributeNS(xlinkNS, key, value);
  	    }
  	  } else {
  	    baseSetAttr(el, key, value);
  	  }
  	}
  
  	function baseSetAttr (el, key, value) {
  	  if (isFalsyAttrValue(value)) {
  	    el.removeAttribute(key);
  	  } else {
  	    // #7138: IE10 & 11 fires input event when setting placeholder on
  	    // <textarea>... block the first input event and remove the blocker
  	    // immediately.
  	    /* istanbul ignore if */
  	    if (
  	      isIE && !isIE9 &&
  	      el.tagName === 'TEXTAREA' &&
  	      key === 'placeholder' && !el.__ieph
  	    ) {
  	      var blocker = function (e) {
  	        e.stopImmediatePropagation();
  	        el.removeEventListener('input', blocker);
  	      };
  	      el.addEventListener('input', blocker);
  	      // $flow-disable-line
  	      el.__ieph = true; /* IE placeholder patched */
  	    }
  	    el.setAttribute(key, value);
  	  }
  	}
  
  	var attrs = {
  	  create: updateAttrs,
  	  update: updateAttrs
  	}
  
  	/*  */
  
  	function updateClass (oldVnode, vnode) {
  	  var el = vnode.elm;
  	  var data = vnode.data;
  	  var oldData = oldVnode.data;
  	  if (
  	    isUndef(data.staticClass) &&
  	    isUndef(data.class) && (
  	      isUndef(oldData) || (
  	        isUndef(oldData.staticClass) &&
  	        isUndef(oldData.class)
  	      )
  	    )
  	  ) {
  	    return
  	  }
  
  	  var cls = genClassForVnode(vnode);
  
  	  // handle transition classes
  	  var transitionClass = el._transitionClasses;
  	  if (isDef(transitionClass)) {
  	    cls = concat(cls, stringifyClass(transitionClass));
  	  }
  
  	  // set the class
  	  if (cls !== el._prevClass) {
  	    el.setAttribute('class', cls);
  	    el._prevClass = cls;
  	  }
  	}
  
  	var klass = {
  	  create: updateClass,
  	  update: updateClass
  	}
  
  	/*  */
  
  	var validDivisionCharRE = /[\w).+\-_$\]]/;
  
  	function parseFilters (exp) {
  	  var inSingle = false;
  	  var inDouble = false;
  	  var inTemplateString = false;
  	  var inRegex = false;
  	  var curly = 0;
  	  var square = 0;
  	  var paren = 0;
  	  var lastFilterIndex = 0;
  	  var c, prev, i, expression, filters;
  
  	  for (i = 0; i < exp.length; i++) {
  	    prev = c;
  	    c = exp.charCodeAt(i);
  	    if (inSingle) {
  	      if (c === 0x27 && prev !== 0x5C) { inSingle = false; }
  	    } else if (inDouble) {
  	      if (c === 0x22 && prev !== 0x5C) { inDouble = false; }
  	    } else if (inTemplateString) {
  	      if (c === 0x60 && prev !== 0x5C) { inTemplateString = false; }
  	    } else if (inRegex) {
  	      if (c === 0x2f && prev !== 0x5C) { inRegex = false; }
  	    } else if (
  	      c === 0x7C && // pipe
  	      exp.charCodeAt(i + 1) !== 0x7C &&
  	      exp.charCodeAt(i - 1) !== 0x7C &&
  	      !curly && !square && !paren
  	    ) {
  	      if (expression === undefined) {
  	        // first filter, end of expression
  	        lastFilterIndex = i + 1;
  	        expression = exp.slice(0, i).trim();
  	      } else {
  	        pushFilter();
  	      }
  	    } else {
  	      switch (c) {
  	        case 0x22: inDouble = true; break         // "
  	        case 0x27: inSingle = true; break         // '
  	        case 0x60: inTemplateString = true; break // `
  	        case 0x28: paren++; break                 // (
  	        case 0x29: paren--; break                 // )
  	        case 0x5B: square++; break                // [
  	        case 0x5D: square--; break                // ]
  	        case 0x7B: curly++; break                 // {
  	        case 0x7D: curly--; break                 // }
  	      }
  	      if (c === 0x2f) { // /
  	        var j = i - 1;
  	        var p = (void 0);
  	        // find first non-whitespace prev char
  	        for (; j >= 0; j--) {
  	          p = exp.charAt(j);
  	          if (p !== ' ') { break }
  	        }
  	        if (!p || !validDivisionCharRE.test(p)) {
  	          inRegex = true;
  	        }
  	      }
  	    }
  	  }
  
  	  if (expression === undefined) {
  	    expression = exp.slice(0, i).trim();
  	  } else if (lastFilterIndex !== 0) {
  	    pushFilter();
  	  }
  
  	  function pushFilter () {
  	    (filters || (filters = [])).push(exp.slice(lastFilterIndex, i).trim());
  	    lastFilterIndex = i + 1;
  	  }
  
  	  if (filters) {
  	    for (i = 0; i < filters.length; i++) {
  	      expression = wrapFilter(expression, filters[i]);
  	    }
  	  }
  
  	  return expression
  	}
  
  	function wrapFilter (exp, filter) {
  	  var i = filter.indexOf('(');
  	  if (i < 0) {
  	    // _f: resolveFilter
  	    return ("_f(\"" + filter + "\")(" + exp + ")")
  	  } else {
  	    var name = filter.slice(0, i);
  	    var args = filter.slice(i + 1);
  	    return ("_f(\"" + name + "\")(" + exp + (args !== ')' ? ',' + args : args))
  	  }
  	}
  
  	/*  */
  
  	function baseWarn (msg) {
  	  console.error(("[Vue compiler]: " + msg));
  	}
  
  	function pluckModuleFunction (
  	  modules,
  	  key
  	) {
  	  return modules
  	    ? modules.map(function (m) { return m[key]; }).filter(function (_) { return _; })
  	    : []
  	}
  
  	function addProp (el, name, value) {
  	  (el.props || (el.props = [])).push({ name: name, value: value });
  	  el.plain = false;
  	}
  
  	function addAttr (el, name, value) {
  	  (el.attrs || (el.attrs = [])).push({ name: name, value: value });
  	  el.plain = false;
  	}
  
  	// add a raw attr (use this in preTransforms)
  	function addRawAttr (el, name, value) {
  	  el.attrsMap[name] = value;
  	  el.attrsList.push({ name: name, value: value });
  	}
  
  	function addDirective (
  	  el,
  	  name,
  	  rawName,
  	  value,
  	  arg,
  	  modifiers
  	) {
  	  (el.directives || (el.directives = [])).push({ name: name, rawName: rawName, value: value, arg: arg, modifiers: modifiers });
  	  el.plain = false;
  	}
  
  	function addHandler (
  	  el,
  	  name,
  	  value,
  	  modifiers,
  	  important,
  	  warn
  	) {
  	  modifiers = modifiers || emptyObject;
  	  // warn prevent and passive modifier
  	  /* istanbul ignore if */
  	  if (
  	    false
  	  ) {
  	    warn(
  	      'passive and prevent can\'t be used together. ' +
  	      'Passive handler can\'t prevent default event.'
  	    );
  	  }
  
  	  // check capture modifier
  	  if (modifiers.capture) {
  	    delete modifiers.capture;
  	    name = '!' + name; // mark the event as captured
  	  }
  	  if (modifiers.once) {
  	    delete modifiers.once;
  	    name = '~' + name; // mark the event as once
  	  }
  	  /* istanbul ignore if */
  	  if (modifiers.passive) {
  	    delete modifiers.passive;
  	    name = '&' + name; // mark the event as passive
  	  }
  
  	  // normalize click.right and click.middle since they don't actually fire
  	  // this is technically browser-specific, but at least for now browsers are
  	  // the only target envs that have right/middle clicks.
  	  if (name === 'click') {
  	    if (modifiers.right) {
  	      name = 'contextmenu';
  	      delete modifiers.right;
  	    } else if (modifiers.middle) {
  	      name = 'mouseup';
  	    }
  	  }
  
  	  var events;
  	  if (modifiers.native) {
  	    delete modifiers.native;
  	    events = el.nativeEvents || (el.nativeEvents = {});
  	  } else {
  	    events = el.events || (el.events = {});
  	  }
  
  	  var newHandler = {
  	    value: value.trim()
  	  };
  	  if (modifiers !== emptyObject) {
  	    newHandler.modifiers = modifiers;
  	  }
  
  	  var handlers = events[name];
  	  /* istanbul ignore if */
  	  if (Array.isArray(handlers)) {
  	    important ? handlers.unshift(newHandler) : handlers.push(newHandler);
  	  } else if (handlers) {
  	    events[name] = important ? [newHandler, handlers] : [handlers, newHandler];
  	  } else {
  	    events[name] = newHandler;
  	  }
  
  	  el.plain = false;
  	}
  
  	function getBindingAttr (
  	  el,
  	  name,
  	  getStatic
  	) {
  	  var dynamicValue =
  	    getAndRemoveAttr(el, ':' + name) ||
  	    getAndRemoveAttr(el, 'v-bind:' + name);
  	  if (dynamicValue != null) {
  	    return parseFilters(dynamicValue)
  	  } else if (getStatic !== false) {
  	    var staticValue = getAndRemoveAttr(el, name);
  	    if (staticValue != null) {
  	      return JSON.stringify(staticValue)
  	    }
  	  }
  	}
  
  	// note: this only removes the attr from the Array (attrsList) so that it
  	// doesn't get processed by processAttrs.
  	// By default it does NOT remove it from the map (attrsMap) because the map is
  	// needed during codegen.
  	function getAndRemoveAttr (
  	  el,
  	  name,
  	  removeFromMap
  	) {
  	  var val;
  	  if ((val = el.attrsMap[name]) != null) {
  	    var list = el.attrsList;
  	    for (var i = 0, l = list.length; i < l; i++) {
  	      if (list[i].name === name) {
  	        list.splice(i, 1);
  	        break
  	      }
  	    }
  	  }
  	  if (removeFromMap) {
  	    delete el.attrsMap[name];
  	  }
  	  return val
  	}
  
  	/*  */
  
  	/**
  	 * Cross-platform code generation for component v-model
  	 */
  	function genComponentModel (
  	  el,
  	  value,
  	  modifiers
  	) {
  	  var ref = modifiers || {};
  	  var number = ref.number;
  	  var trim = ref.trim;
  
  	  var baseValueExpression = '$$v';
  	  var valueExpression = baseValueExpression;
  	  if (trim) {
  	    valueExpression =
  	      "(typeof " + baseValueExpression + " === 'string'" +
  	      "? " + baseValueExpression + ".trim()" +
  	      ": " + baseValueExpression + ")";
  	  }
  	  if (number) {
  	    valueExpression = "_n(" + valueExpression + ")";
  	  }
  	  var assignment = genAssignmentCode(value, valueExpression);
  
  	  el.model = {
  	    value: ("(" + value + ")"),
  	    expression: ("\"" + 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;
  	var str;
  	var chr;
  	var index$1;
  	var expressionPos;
  	var expressionEndPos;
  
  
  
  	function parseModel (val) {
  	  // Fix https://github.com/vuejs/vue/pull/7730
  	  // allow v-model="obj.val " (trailing whitespace)
  	  val = val.trim();
  	  len = val.length;
  
  	  if (val.indexOf('[') < 0 || val.lastIndexOf(']') < len - 1) {
  	    index$1 = val.lastIndexOf('.');
  	    if (index$1 > -1) {
  	      return {
  	        exp: val.slice(0, index$1),
  	        key: '"' + val.slice(index$1 + 1) + '"'
  	      }
  	    } else {
  	      return {
  	        exp: val,
  	        key: null
  	      }
  	    }
  	  }
  
  	  str = val;
  	  index$1 = expressionPos = expressionEndPos = 0;
  
  	  while (!eof()) {
  	    chr = next();
  	    /* istanbul ignore if */
  	    if (isStringStart(chr)) {
  	      parseString(chr);
  	    } else if (chr === 0x5B) {
  	      parseBracket(chr);
  	    }
  	  }
  
  	  return {
  	    exp: val.slice(0, expressionPos),
  	    key: val.slice(expressionPos + 1, expressionEndPos)
  	  }
  	}
  
  	function next () {
  	  return str.charCodeAt(++index$1)
  	}
  
  	function eof () {
  	  return index$1 >= len
  	}
  
  	function isStringStart (chr) {
  	  return chr === 0x22 || chr === 0x27
  	}
  
  	function parseBracket (chr) {
  	  var inBracket = 1;
  	  expressionPos = index$1;
  	  while (!eof()) {
  	    chr = next();
  	    if (isStringStart(chr)) {
  	      parseString(chr);
  	      continue
  	    }
  	    if (chr === 0x5B) { inBracket++; }
  	    if (chr === 0x5D) { inBracket--; }
  	    if (inBracket === 0) {
  	      expressionEndPos = index$1;
  	      break
  	    }
  	  }
  	}
  
  	function parseString (chr) {
  	  var stringQuote = chr;
  	  while (!eof()) {
  	    chr = next();
  	    if (chr === stringQuote) {
  	      break
  	    }
  	  }
  	}
  
  	/*  */
  
  	var warn$1;
  
  	// in some cases, the event used has to be determined at runtime
  	// so we used some reserved tokens during compile.
  	var RANGE_TOKEN = '__r';
  	var CHECKBOX_RADIO_TOKEN = '__c';
  
  	function model (
  	  el,
  	  dir,
  	  _warn
  	) {
  	  warn$1 = _warn;
  	  var value = dir.value;
  	  var modifiers = dir.modifiers;
  	  var tag = el.tag;
  	  var type = el.attrsMap.type;
  
  	  if (false) {
  	    // inputs with type="file" are read only and setting the input's
  	    // value will throw an error.
  	    if (tag === 'input' && type === 'file') {
  	      warn$1(
  	        "<" + (el.tag) + " v-model=\"" + value + "\" type=\"file\">:\n" +
  	        "File inputs are read only. Use a v-on:change listener instead."
  	      );
  	    }
  	  }
  
  	  if (el.component) {
  	    genComponentModel(el, value, modifiers);
  	    // component v-model doesn't need extra runtime
  	    return false
  	  } else if (tag === 'select') {
  	    genSelect(el, value, modifiers);
  	  } else if (tag === 'input' && type === 'checkbox') {
  	    genCheckboxModel(el, value, modifiers);
  	  } else if (tag === 'input' && type === 'radio') {
  	    genRadioModel(el, value, modifiers);
  	  } else if (tag === 'input' || tag === 'textarea') {
  	    genDefaultModel(el, value, modifiers);
  	  } else if (!config.isReservedTag(tag)) {
  	    genComponentModel(el, value, modifiers);
  	    // component v-model doesn't need extra runtime
  	    return false
  	  } else if (false) {
  	    warn$1(
  	      "<" + (el.tag) + " v-model=\"" + value + "\">: " +
  	      "v-model is not supported on this element type. " +
  	      'If you are working with contenteditable, it\'s recommended to ' +
  	      'wrap a library dedicated for that purpose inside a custom component.'
  	    );
  	  }
  
  	  // ensure runtime directive metadata
  	  return true
  	}
  
  	function genCheckboxModel (
  	  el,
  	  value,
  	  modifiers
  	) {
  	  var number = modifiers && modifiers.number;
  	  var valueBinding = getBindingAttr(el, 'value') || 'null';
  	  var trueValueBinding = getBindingAttr(el, 'true-value') || 'true';
  	  var falseValueBinding = getBindingAttr(el, 'false-value') || 'false';
  	  addProp(el, 'checked',
  	    "Array.isArray(" + value + ")" +
  	    "?_i(" + value + "," + valueBinding + ")>-1" + (
  	      trueValueBinding === 'true'
  	        ? (":(" + value + ")")
  	        : (":_q(" + value + "," + trueValueBinding + ")")
  	    )
  	  );
  	  addHandler(el, 'change',
  	    "var $$a=" + value + "," +
  	        '$$el=$event.target,' +
  	        "$$c=$$el.checked?(" + trueValueBinding + "):(" + falseValueBinding + ");" +
  	    'if(Array.isArray($$a)){' +
  	      "var $$v=" + (number ? '_n(' + valueBinding + ')' : valueBinding) + "," +
  	          '$$i=_i($$a,$$v);' +
  	      "if($$el.checked){$$i<0&&(" + (genAssignmentCode(value, '$$a.concat([$$v])')) + ")}" +
  	      "else{$$i>-1&&(" + (genAssignmentCode(value, '$$a.slice(0,$$i).concat($$a.slice($$i+1))')) + ")}" +
  	    "}else{" + (genAssignmentCode(value, '$$c')) + "}",
  	    null, true
  	  );
  	}
  
  	function genRadioModel (
  	  el,
  	  value,
  	  modifiers
  	) {
  	  var number = modifiers && modifiers.number;
  	  var valueBinding = getBindingAttr(el, 'value') || 'null';
  	  valueBinding = number ? ("_n(" + valueBinding + ")") : valueBinding;
  	  addProp(el, 'checked', ("_q(" + value + "," + valueBinding + ")"));
  	  addHandler(el, 'change', genAssignmentCode(value, valueBinding), null, true);
  	}
  
  	function genSelect (
  	  el,
  	  value,
  	  modifiers
  	) {
  	  var number = modifiers && modifiers.number;
  	  var selectedVal = "Array.prototype.filter" +
  	    ".call($event.target.options,function(o){return o.selected})" +
  	    ".map(function(o){var val = \"_value\" in o ? o._value : o.value;" +
  	    "return " + (number ? '_n(val)' : 'val') + "})";
  
  	  var assignment = '$event.target.multiple ? $$selectedVal : $$selectedVal[0]';
  	  var code = "var $$selectedVal = " + selectedVal + ";";
  	  code = code + " " + (genAssignmentCode(value, assignment));
  	  addHandler(el, 'change', code, null, true);
  	}
  
  	function genDefaultModel (
  	  el,
  	  value,
  	  modifiers
  	) {
  	  var type = el.attrsMap.type;
  
  	  // warn if v-bind:value conflicts with v-model
  	  // except for inputs with v-bind:type
  	  if (false) {
  	    var value$1 = el.attrsMap['v-bind:value'] || el.attrsMap[':value'];
  	    var typeBinding = el.attrsMap['v-bind:type'] || el.attrsMap[':type'];
  	    if (value$1 && !typeBinding) {
  	      var binding = el.attrsMap['v-bind:value'] ? 'v-bind:value' : ':value';
  	      warn$1(
  	        binding + "=\"" + value$1 + "\" conflicts with v-model on the same element " +
  	        'because the latter already expands to a value binding internally'
  	      );
  	    }
  	  }
  
  	  var ref = modifiers || {};
  	  var lazy = ref.lazy;
  	  var number = ref.number;
  	  var trim = ref.trim;
  	  var needCompositionGuard = !lazy && type !== 'range';
  	  var event = lazy
  	    ? 'change'
  	    : type === 'range'
  	      ? RANGE_TOKEN
  	      : 'input';
  
  	  var valueExpression = '$event.target.value';
  	  if (trim) {
  	    valueExpression = "$event.target.value.trim()";
  	  }
  	  if (number) {
  	    valueExpression = "_n(" + valueExpression + ")";
  	  }
  
  	  var code = genAssignmentCode(value, valueExpression);
  	  if (needCompositionGuard) {
  	    code = "if($event.target.composing)return;" + code;
  	  }
  
  	  addProp(el, 'value', ("(" + value + ")"));
  	  addHandler(el, event, code, null, true);
  	  if (trim || number) {
  	    addHandler(el, 'blur', '$forceUpdate()');
  	  }
  	}
  
  	/*  */
  
  	// normalize v-model event tokens that can only be determined at runtime.
  	// it's important to place the event as the first in the array because
  	// the whole point is ensuring the v-model callback gets called before
  	// user-attached handlers.
  	function normalizeEvents (on) {
  	  /* istanbul ignore if */
  	  if (isDef(on[RANGE_TOKEN])) {
  	    // IE input[type=range] only supports `change` event
  	    var event = isIE ? 'change' : 'input';
  	    on[event] = [].concat(on[RANGE_TOKEN], on[event] || []);
  	    delete on[RANGE_TOKEN];
  	  }
  	  // This was originally intended to fix #4521 but no longer necessary
  	  // after 2.5. Keeping it for backwards compat with generated code from < 2.4
  	  /* istanbul ignore if */
  	  if (isDef(on[CHECKBOX_RADIO_TOKEN])) {
  	    on.change = [].concat(on[CHECKBOX_RADIO_TOKEN], on.change || []);
  	    delete on[CHECKBOX_RADIO_TOKEN];
  	  }
  	}
  
  	var target$1;
  
  	function createOnceHandler (handler, event, capture) {
  	  var _target = target$1; // save current target element in closure
  	  return function onceHandler () {
  	    var res = handler.apply(null, arguments);
  	    if (res !== null) {
  	      remove$2(event, onceHandler, capture, _target);
  	    }
  	  }
  	}
  
  	function add$1 (
  	  event,
  	  handler,
  	  once$$1,
  	  capture,
  	  passive
  	) {
  	  handler = withMacroTask(handler);
  	  if (once$$1) { handler = createOnceHandler(handler, event, capture); }
  	  target$1.addEventListener(
  	    event,
  	    handler,
  	    supportsPassive
  	      ? { capture: capture, passive: passive }
  	      : capture
  	  );
  	}
  
  	function remove$2 (
  	  event,
  	  handler,
  	  capture,
  	  _target
  	) {
  	  (_target || target$1).removeEventListener(
  	    event,
  	    handler._withTask || handler,
  	    capture
  	  );
  	}
  
  	function updateDOMListeners (oldVnode, vnode) {
  	  if (isUndef(oldVnode.data.on) && isUndef(vnode.data.on)) {
  	    return
  	  }
  	  var on = vnode.data.on || {};
  	  var oldOn = oldVnode.data.on || {};
  	  target$1 = vnode.elm;
  	  normalizeEvents(on);
  	  updateListeners(on, oldOn, add$1, remove$2, vnode.context);
  	  target$1 = undefined;
  	}
  
  	var events = {
  	  create: updateDOMListeners,
  	  update: updateDOMListeners
  	}
  
  	/*  */
  
  	function updateDOMProps (oldVnode, vnode) {
  	  if (isUndef(oldVnode.data.domProps) && isUndef(vnode.data.domProps)) {
  	    return
  	  }
  	  var key, cur;
  	  var elm = vnode.elm;
  	  var oldProps = oldVnode.data.domProps || {};
  	  var props = vnode.data.domProps || {};
  	  // clone observed objects, as the user probably wants to mutate it
  	  if (isDef(props.__ob__)) {
  	    props = vnode.data.domProps = extend({}, props);
  	  }
  
  	  for (key in oldProps) {
  	    if (isUndef(props[key])) {
  	      elm[key] = '';
  	    }
  	  }
  	  for (key in props) {
  	    cur = props[key];
  	    // ignore children if the node has textContent or innerHTML,
  	    // as these will throw away existing DOM nodes and cause removal errors
  	    // on subsequent patches (#3360)
  	    if (key === 'textContent' || key === 'innerHTML') {
  	      if (vnode.children) { vnode.children.length = 0; }
  	      if (cur === oldProps[key]) { continue }
  	      // #6601 work around Chrome version <= 55 bug where single textNode
  	      // replaced by innerHTML/textContent retains its parentNode property
  	      if (elm.childNodes.length === 1) {
  	        elm.removeChild(elm.childNodes[0]);
  	      }
  	    }
  
  	    if (key === 'value') {
  	      // store value as _value as well since
  	      // non-string values will be stringified
  	      elm._value = cur;
  	      // avoid resetting cursor position when value is the same
  	      var strCur = isUndef(cur) ? '' : String(cur);
  	      if (shouldUpdateValue(elm, strCur)) {
  	        elm.value = strCur;
  	      }
  	    } else {
  	      elm[key] = cur;
  	    }
  	  }
  	}
  
  	// check platforms/web/util/attrs.js acceptValue
  
  
  	function shouldUpdateValue (elm, checkVal) {
  	  return (!elm.composing && (
  	    elm.tagName === 'OPTION' ||
  	    isNotInFocusAndDirty(elm, checkVal) ||
  	    isDirtyWithModifiers(elm, checkVal)
  	  ))
  	}
  
  	function isNotInFocusAndDirty (elm, checkVal) {
  	  // return true when textbox (.number and .trim) loses focus and its value is
  	  // not equal to the updated value
  	  var notInFocus = true;
  	  // #6157
  	  // work around IE bug when accessing document.activeElement in an iframe
  	  try { notInFocus = document.activeElement !== elm; } catch (e) {}
  	  return notInFocus && elm.value !== checkVal
  	}
  
  	function isDirtyWithModifiers (elm, newVal) {
  	  var value = elm.value;
  	  var modifiers = elm._vModifiers; // injected by v-model runtime
  	  if (isDef(modifiers)) {
  	    if (modifiers.lazy) {
  	      // inputs with lazy should only be updated when not in focus
  	      return false
  	    }
  	    if (modifiers.number) {
  	      return toNumber(value) !== toNumber(newVal)
  	    }
  	    if (modifiers.trim) {
  	      return value.trim() !== newVal.trim()
  	    }
  	  }
  	  return value !== newVal
  	}
  
  	var domProps = {
  	  create: updateDOMProps,
  	  update: updateDOMProps
  	}
  
  	/*  */
  
  	var parseStyleText = cached(function (cssText) {
  	  var res = {};
  	  var listDelimiter = /;(?![^(]*\))/g;
  	  var propertyDelimiter = /:(.+)/;
  	  cssText.split(listDelimiter).forEach(function (item) {
  	    if (item) {
  	      var tmp = item.split(propertyDelimiter);
  	      tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim());
  	    }
  	  });
  	  return res
  	});
  
  	// merge static and dynamic style data on the same vnode
  	function normalizeStyleData (data) {
  	  var style = normalizeStyleBinding(data.style);
  	  // static style is pre-processed into an object during compilation
  	  // and is always a fresh object, so it's safe to merge into it
  	  return data.staticStyle
  	    ? extend(data.staticStyle, style)
  	    : style
  	}
  
  	// normalize possible array / string values into Object
  	function normalizeStyleBinding (bindingStyle) {
  	  if (Array.isArray(bindingStyle)) {
  	    return toObject(bindingStyle)
  	  }
  	  if (typeof bindingStyle === 'string') {
  	    return parseStyleText(bindingStyle)
  	  }
  	  return bindingStyle
  	}
  
  	/**
  	 * parent component style should be after child's
  	 * so that parent component's style could override it
  	 */
  	function getStyle (vnode, checkChild) {
  	  var res = {};
  	  var styleData;
  
  	  if (checkChild) {
  	    var childNode = vnode;
  	    while (childNode.componentInstance) {
  	      childNode = childNode.componentInstance._vnode;
  	      if (
  	        childNode && childNode.data &&
  	        (styleData = normalizeStyleData(childNode.data))
  	      ) {
  	        extend(res, styleData);
  	      }
  	    }
  	  }
  
  	  if ((styleData = normalizeStyleData(vnode.data))) {
  	    extend(res, styleData);
  	  }
  
  	  var parentNode = vnode;
  	  while ((parentNode = parentNode.parent)) {
  	    if (parentNode.data && (styleData = normalizeStyleData(parentNode.data))) {
  	      extend(res, styleData);
  	    }
  	  }
  	  return res
  	}
  
  	/*  */
  
  	var cssVarRE = /^--/;
  	var importantRE = /\s*!important$/;
  	var setProp = function (el, name, val) {
  	  /* istanbul ignore if */
  	  if (cssVarRE.test(name)) {
  	    el.style.setProperty(name, val);
  	  } else if (importantRE.test(val)) {
  	    el.style.setProperty(name, val.replace(importantRE, ''), 'important');
  	  } else {
  	    var normalizedName = normalize(name);
  	    if (Array.isArray(val)) {
  	      // Support values array created by autoprefixer, e.g.
  	      // {display: ["-webkit-box", "-ms-flexbox", "flex"]}
  	      // Set them one by one, and the browser will only set those it can recognize
  	      for (var i = 0, len = val.length; i < len; i++) {
  	        el.style[normalizedName] = val[i];
  	      }
  	    } else {
  	      el.style[normalizedName] = val;
  	    }
  	  }
  	};
  
  	var vendorNames = ['Webkit', 'Moz', 'ms'];
  
  	var emptyStyle;
  	var normalize = cached(function (prop) {
  	  emptyStyle = emptyStyle || document.createElement('div').style;
  	  prop = camelize(prop);
  	  if (prop !== 'filter' && (prop in emptyStyle)) {
  	    return prop
  	  }
  	  var capName = prop.charAt(0).toUpperCase() + prop.slice(1);
  	  for (var i = 0; i < vendorNames.length; i++) {
  	    var name = vendorNames[i] + capName;
  	    if (name in emptyStyle) {
  	      return name
  	    }
  	  }
  	});
  
  	function updateStyle (oldVnode, vnode) {
  	  var data = vnode.data;
  	  var oldData = oldVnode.data;
  
  	  if (isUndef(data.staticStyle) && isUndef(data.style) &&
  	    isUndef(oldData.staticStyle) && isUndef(oldData.style)
  	  ) {
  	    return
  	  }
  
  	  var cur, name;
  	  var el = vnode.elm;
  	  var oldStaticStyle = oldData.staticStyle;
  	  var oldStyleBinding = oldData.normalizedStyle || oldData.style || {};
  
  	  // if static style exists, stylebinding already merged into it when doing normalizeStyleData
  	  var oldStyle = oldStaticStyle || oldStyleBinding;
  
  	  var style = normalizeStyleBinding(vnode.data.style) || {};
  
  	  // store normalized style under a different key for next diff
  	  // make sure to clone it if it's reactive, since the user likely wants
  	  // to mutate it.
  	  vnode.data.normalizedStyle = isDef(style.__ob__)
  	    ? extend({}, style)
  	    : style;
  
  	  var newStyle = getStyle(vnode, true);
  
  	  for (name in oldStyle) {
  	    if (isUndef(newStyle[name])) {
  	      setProp(el, name, '');
  	    }
  	  }
  	  for (name in newStyle) {
  	    cur = newStyle[name];
  	    if (cur !== oldStyle[name]) {
  	      // ie9 setting to null has no effect, must use empty string
  	      setProp(el, name, cur == null ? '' : cur);
  	    }
  	  }
  	}
  
  	var style = {
  	  create: updateStyle,
  	  update: updateStyle
  	}
  
  	/*  */
  
  	/**
  	 * 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(/\s+/).forEach(function (c) { return el.classList.add(c); });
  	    } else {
  	      el.classList.add(cls);
  	    }
  	  } else {
  	    var cur = " " + (el.getAttribute('class') || '') + " ";
  	    if (cur.indexOf(' ' + cls + ' ') < 0) {
  	      el.setAttribute('class', (cur + cls).trim());
  	    }
  	  }
  	}
  
  	/**
  	 * Remove class with compatibility for SVG since classList is not supported on
  	 * SVG elements in IE
  	 */
  	function removeClass (el, cls) {
  	  /* istanbul ignore if */
  	  if (!cls || !(cls = cls.trim())) {
  	    return
  	  }
  
  	  /* istanbul ignore else */
  	  if (el.classList) {
  	    if (cls.indexOf(' ') > -1) {
  	      cls.split(/\s+/).forEach(function (c) { return el.classList.remove(c); });
  	    } else {
  	      el.classList.remove(cls);
  	    }
  	    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) {
  	  if (!def) {
  	    return
  	  }
  	  /* istanbul ignore else */
  	  if (typeof def === 'object') {
  	    var res = {};
  	    if (def.css !== false) {
  	      extend(res, autoCssTransition(def.name || 'v'));
  	    }
  	    extend(res, def);
  	    return res
  	  } else if (typeof def === 'string') {
  	    return autoCssTransition(def)
  	  }
  	}
  
  	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);
  	  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])
  	  }))
  	}
  
  	function toMs (s) {
  	  return Number(s.slice(0, -1)) * 1000
  	}
  
  	/*  */
  
  	function enter (vnode, toggleDisplay) {
  	  var el = vnode.elm;
  
  	  // call leave callback now
  	  if (isDef(el._leaveCb)) {
  	    el._leaveCb.cancelled = true;
  	    el._leaveCb();
  	  }
  
  	  var data = resolveTransition(vnode.data.transition);
  	  if (isUndef(data)) {
  	    return
  	  }
  
  	  /* istanbul ignore if */
  	  if (isDef(el._enterCb) || el.nodeType !== 1) {
  	    return
  	  }
  
  	  var css = data.css;
  	  var type = data.type;
  	  var enterClass = data.enterClass;
  	  var enterToClass = data.enterToClass;
  	  var enterActiveClass = data.enterActiveClass;
  	  var appearClass = data.appearClass;
  	  var appearToClass = data.appearToClass;
  	  var appearActiveClass = data.appearActiveClass;
  	  var beforeEnter = data.beforeEnter;
  	  var enter = data.enter;
  	  var afterEnter = data.afterEnter;
  	  var enterCancelled = data.enterCancelled;
  	  var beforeAppear = data.beforeAppear;
  	  var appear = data.appear;
  	  var afterAppear = data.afterAppear;
  	  var appearCancelled = data.appearCancelled;
  	  var duration = data.duration;
  
  	  // activeInstance will always be the <transition> component managing this
  	  // transition. One edge case to check is when the <transition> is placed
  	  // as the root node of a child component. In that case we need to check
  	  // <transition>'s parent for appear check.
  	  var context = activeInstance;
  	  var transitionNode = activeInstance.$vnode;
  	  while (transitionNode && transitionNode.parent) {
  	    transitionNode = transitionNode.parent;
  	    context = transitionNode.context;
  	  }
  
  	  var isAppear = !context._isMounted || !vnode.isRootInsert;
  
  	  if (isAppear && !appear && appear !== '') {
  	    return
  	  }
  
  	  var startClass = isAppear && appearClass
  	    ? appearClass
  	    : enterClass;
  	  var activeClass = isAppear && appearActiveClass
  	    ? appearActiveClass
  	    : enterActiveClass;
  	  var toClass = isAppear && appearToClass
  	    ? appearToClass
  	    : enterToClass;
  
  	  var beforeEnterHook = isAppear
  	    ? (beforeAppear || beforeEnter)
  	    : beforeEnter;
  	  var enterHook = isAppear
  	    ? (typeof appear === 'function' ? appear : enter)
  	    : enter;
  	  var afterEnterHook = isAppear
  	    ? (afterAppear || afterEnter)
  	    : afterEnter;
  	  var enterCancelledHook = isAppear
  	    ? (appearCancelled || enterCancelled)
  	    : enterCancelled;
  
  	  var explicitEnterDuration = toNumber(
  	    isObject(duration)
  	      ? duration.enter
  	      : duration
  	  );
  
  	  if (false) {
  	    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 (false) {
  	    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._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)) {
  	    ("production") !== 'production' && warn(
  	      "<select multiple v-model=\"" + (binding.expression) + "\"> " +
  	      "expects an Array value for its binding, but got " + (Object.prototype.toString.call(value).slice(8, -1)),
  	      vm
  	    );
  	    return
  	  }
  	  var selected, option;
  	  for (var i = 0, l = el.options.length; i < l; i++) {
  	    option = el.options[i];
  	    if (isMultiple) {
  	      selected = looseIndexOf(value, getValue(option)) > -1;
  	      if (option.selected !== selected) {
  	        option.selected = selected;
  	      }
  	    } else {
  	      if (looseEqual(getValue(option), value)) {
  	        if (el.selectedIndex !== i) {
  	          el.selectedIndex = i;
  	        }
  	        return
  	      }
  	    }
  	  }
  	  if (!isMultiple) {
  	    el.selectedIndex = -1;
  	  }
  	}
  
  	function hasNoMatchingOption (value, options) {
  	  return options.every(function (o) { return !looseEqual(o, value); })
  	}
  
  	function getValue (option) {
  	  return '_value' in option
  	    ? option._value
  	    : option.value
  	}
  
  	function onCompositionStart (e) {
  	  e.target.composing = true;
  	}
  
  	function onCompositionEnd (e) {
  	  // prevent triggering an input event for no reason
  	  if (!e.target.composing) { return }
  	  e.target.composing = false;
  	  trigger(e.target, 'input');
  	}
  
  	function trigger (el, type) {
  	  var e = document.createEvent('HTMLEvents');
  	  e.initEvent(type, true, true);
  	  el.dispatchEvent(e);
  	}
  
  	/*  */
  
  	// recursively search for possible transition defined inside the component root
  	function locateNode (vnode) {
  	  return vnode.componentInstance && (!vnode.data || !vnode.data.transition)
  	    ? locateNode(vnode.componentInstance._vnode)
  	    : vnode
  	}
  
  	var show = {
  	  bind: function bind (el, ref, vnode) {
  	    var value = ref.value;
  
  	    vnode = locateNode(vnode);
  	    var transition$$1 = vnode.data && vnode.data.transition;
  	    var originalDisplay = el.__vOriginalDisplay =
  	      el.style.display === 'none' ? '' : el.style.display;
  	    if (value && transition$$1) {
  	      vnode.data.show = true;
  	      enter(vnode, function () {
  	        el.style.display = originalDisplay;
  	      });
  	    } else {
  	      el.style.display = value ? originalDisplay : 'none';
  	    }
  	  },
  
  	  update: function update (el, ref, vnode) {
  	    var value = ref.value;
  	    var oldValue = ref.oldValue;
  
  	    /* istanbul ignore if */
  	    if (!value === !oldValue) { return }
  	    vnode = locateNode(vnode);
  	    var transition$$1 = vnode.data && vnode.data.transition;
  	    if (transition$$1) {
  	      vnode.data.show = true;
  	      if (value) {
  	        enter(vnode, function () {
  	          el.style.display = el.__vOriginalDisplay;
  	        });
  	      } else {
  	        leave(vnode, function () {
  	          el.style.display = 'none';
  	        });
  	      }
  	    } else {
  	      el.style.display = value ? el.__vOriginalDisplay : 'none';
  	    }
  	  },
  
  	  unbind: function unbind (
  	    el,
  	    binding,
  	    vnode,
  	    oldVnode,
  	    isDestroy
  	  ) {
  	    if (!isDestroy) {
  	      el.style.display = el.__vOriginalDisplay;
  	    }
  	  }
  	}
  
  	var platformDirectives = {
  	  model: directive,
  	  show: show
  	}
  
  	/*  */
  
  	// Provides transition support for a single element/component.
  	// supports transition mode (out-in / in-out)
  
  	var transitionProps = {
  	  name: String,
  	  appear: Boolean,
  	  css: Boolean,
  	  mode: String,
  	  type: String,
  	  enterClass: String,
  	  leaveClass: String,
  	  enterToClass: String,
  	  leaveToClass: String,
  	  enterActiveClass: String,
  	  leaveActiveClass: String,
  	  appearClass: String,
  	  appearActiveClass: String,
  	  appearToClass: String,
  	  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 Transition = {
  	  name: 'transition',
  	  props: transitionProps,
  	  abstract: true,
  
  	  render: function render (h) {
  	    var this$1 = this;
  
  	    var children = this.$slots.default;
  	    if (!children) {
  	      return
  	    }
  
  	    // filter out text nodes (possible whitespaces)
  	    children = children.filter(function (c) { return c.tag || isAsyncPlaceholder(c); });
  	    /* istanbul ignore if */
  	    if (!children.length) {
  	      return
  	    }
  
  	    // warn multiple elements
  	    if (false) {
  	      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 (false
  	    ) {
  	      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(function (d) { return d.name === 'show'; })) {
  	      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
  	  }
  	}
  
  	/*  */
  
  	// Provides transition support for list items.
  	// supports move transitions using the FLIP technique.
  
  	// Because the vdom's children update algorithm is "unstable" - i.e.
  	// it doesn't guarantee the relative positioning of removed elements,
  	// we force transition-group to update its children into two passes:
  	// in the first pass, we remove all nodes that need to be removed,
  	// triggering their leaving transition; in the second pass, we insert/move
  	// into the final desired state. This way in the second pass removed
  	// nodes will remain where they should be.
  
  	var props = extend({
  	  tag: String,
  	  moveClass: String
  	}, transitionProps);
  
  	delete props.mode;
  
  	var TransitionGroup = {
  	  props: props,
  
  	  render: function render (h) {
  	    var tag = this.tag || this.$vnode.data.tag || 'span';
  	    var map = Object.create(null);
  	    var prevChildren = this.prevChildren = this.children;
  	    var rawChildren = this.$slots.default || [];
  	    var children = this.children = [];
  	    var transitionData = extractTransitionData(this);
  
  	    for (var i = 0; i < rawChildren.length; i++) {
  	      var c = rawChildren[i];
  	      if (c.tag) {
  	        if (c.key != null && String(c.key).indexOf('__vlist') !== 0) {
  	          children.push(c);
  	          map[c.key] = c
  	          ;(c.data || (c.data = {})).transition = transitionData;
  	        } else if (false) {
  	          var opts = c.componentOptions;
  	          var name = opts ? (opts.Ctor.options.name || opts.tag || '') : c.tag;
  	          warn(("<transition-group> children must be keyed: <" + name + ">"));
  	        }
  	      }
  	    }
  
  	    if (prevChildren) {
  	      var kept = [];
  	      var removed = [];
  	      for (var i$1 = 0; i$1 < prevChildren.length; i$1++) {
  	        var c$1 = prevChildren[i$1];
  	        c$1.data.transition = transitionData;
  	        c$1.data.pos = c$1.elm.getBoundingClientRect();
  	        if (map[c$1.key]) {
  	          kept.push(c$1);
  	        } else {
  	          removed.push(c$1);
  	        }
  	      }
  	      this.kept = h(tag, null, kept);
  	      this.removed = removed;
  	    }
  
  	    return h(tag, null, children)
  	  },
  
  	  beforeUpdate: function beforeUpdate () {
  	    // force removing pass
  	    this.__patch__(
  	      this._vnode,
  	      this.kept,
  	      false, // hydrating
  	      true // removeOnly (!important, avoids unnecessary moves)
  	    );
  	    this._vnode = this.kept;
  	  },
  
  	  updated: function updated () {
  	    var children = this.prevChildren;
  	    var moveClass = this.moveClass || ((this.name || 'v') + '-move');
  	    if (!children.length || !this.hasMove(children[0].elm, moveClass)) {
  	      return
  	    }
  
  	    // we divide the work into three loops to avoid mixing DOM reads and writes
  	    // in each iteration - which helps prevent layout thrashing.
  	    children.forEach(callPendingCbs);
  	    children.forEach(recordPosition);
  	    children.forEach(applyTranslation);
  
  	    // force reflow to put everything in position
  	    // 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 || /transform$/.test(e.propertyName)) {
  	            el.removeEventListener(transitionEndEvent, cb);
  	            el._moveCb = null;
  	            removeTransitionClass(el, moveClass);
  	          }
  	        });
  	      }
  	    });
  	  },
  
  	  methods: {
  	    hasMove: function hasMove (el, moveClass) {
  	      /* istanbul ignore if */
  	      if (!hasTransition) {
  	        return false
  	      }
  	      /* istanbul ignore if */
  	      if (this._hasMove) {
  	        return this._hasMove
  	      }
  	      // Detect whether an element with the move class applied has
  	      // CSS transitions. Since the element may be inside an entering
  	      // transition at this very moment, we make a clone of it and remove
  	      // all other transition classes applied to ensure only the move class
  	      // is applied.
  	      var clone = el.cloneNode();
  	      if (el._transitionClasses) {
  	        el._transitionClasses.forEach(function (cls) { removeClass(clone, cls); });
  	      }
  	      addClass(clone, moveClass);
  	      clone.style.display = 'none';
  	      this.$el.appendChild(clone);
  	      var info = getTransitionInfo(clone);
  	      this.$el.removeChild(clone);
  	      return (this._hasMove = info.hasTransform)
  	    }
  	  }
  	}
  
  	function callPendingCbs (c) {
  	  /* istanbul ignore if */
  	  if (c.elm._moveCb) {
  	    c.elm._moveCb();
  	  }
  	  /* istanbul ignore if */
  	  if (c.elm._enterCb) {
  	    c.elm._enterCb();
  	  }
  	}
  
  	function recordPosition (c) {
  	  c.data.newPos = c.elm.getBoundingClientRect();
  	}
  
  	function applyTranslation (c) {
  	  var oldPos = c.data.pos;
  	  var newPos = c.data.newPos;
  	  var dx = oldPos.left - newPos.left;
  	  var dy = oldPos.top - newPos.top;
  	  if (dx || dy) {
  	    c.data.moved = true;
  	    var s = c.elm.style;
  	    s.transform = s.WebkitTransform = "translate(" + dx + "px," + dy + "px)";
  	    s.transitionDuration = '0s';
  	  }
  	}
  
  	var platformComponents = {
  	  Transition: Transition,
  	  TransitionGroup: TransitionGroup
  	}
  
  	/*  */
  
  	// install platform specific utils
  	Vue.config.mustUseProp = mustUseProp;
  	Vue.config.isReservedTag = isReservedTag;
  	Vue.config.isReservedAttr = isReservedAttr;
  	Vue.config.getTagNamespace = getTagNamespace;
  	Vue.config.isUnknownElement = isUnknownElement;
  
  	// install platform runtime directives & components
  	extend(Vue.options.directives, platformDirectives);
  	extend(Vue.options.components, platformComponents);
  
  	// install platform patch function
  	Vue.prototype.__patch__ = inBrowser ? patch : noop;
  
  	// public mount method
  	Vue.prototype.$mount = function (
  	  el,
  	  hydrating
  	) {
  	  el = el && inBrowser ? query(el) : undefined;
  	  return mountComponent(this, el, hydrating)
  	};
  
  	// devtools global hook
  	/* istanbul ignore next */
  	if (inBrowser) {
  	  setTimeout(function () {
  	    if (config.devtools) {
  	      if (devtools) {
  	        devtools.emit('init', Vue);
  	      } else if (
  	        false
  	      ) {
  	        console[console.info ? 'info' : 'log'](
  	          'Download the Vue Devtools extension for a better development experience:\n' +
  	          'https://github.com/vuejs/vue-devtools'
  	        );
  	      }
  	    }
  	    if (false
  	    ) {
  	      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 = /\{\{((?:.|\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 (false) {
  	    var res = parseText(staticClass, options.delimiters);
  	    if (res) {
  	      warn(
  	        "class=\"" + staticClass + "\": " +
  	        'Interpolation inside attributes has been removed. ' +
  	        'Use v-bind or the colon shorthand instead. For example, ' +
  	        'instead of <div class="{{ val }}">, use <div :class="val">.'
  	      );
  	    }
  	  }
  	  if (staticClass) {
  	    el.staticClass = JSON.stringify(staticClass);
  	  }
  	  var classBinding = getBindingAttr(el, 'class', false /* getStatic */);
  	  if (classBinding) {
  	    el.classBinding = classBinding;
  	  }
  	}
  
  	function genData (el) {
  	  var data = '';
  	  if (el.staticClass) {
  	    data += "staticClass:" + (el.staticClass) + ",";
  	  }
  	  if (el.classBinding) {
  	    data += "class:" + (el.classBinding) + ",";
  	  }
  	  return data
  	}
  
  	var klass$1 = {
  	  staticKeys: ['staticClass'],
  	  transformNode: transformNode,
  	  genData: genData
  	}
  
  	/*  */
  
  	function transformNode$1 (el, options) {
  	  var warn = options.warn || baseWarn;
  	  var staticStyle = getAndRemoveAttr(el, 'style');
  	  if (staticStyle) {
  	    /* istanbul ignore if */
  	    if (false) {
  	      var res = parseText(staticStyle, options.delimiters);
  	      if (res) {
  	        warn(
  	          "style=\"" + staticStyle + "\": " +
  	          'Interpolation inside attributes has been removed. ' +
  	          'Use v-bind or the colon shorthand instead. For example, ' +
  	          'instead of <div style="{{ val }}">, use <div :style="val">.'
  	        );
  	      }
  	    }
  	    el.staticStyle = JSON.stringify(parseStyleText(staticStyle));
  	  }
  
  	  var styleBinding = getBindingAttr(el, 'style', false /* getStatic */);
  	  if (styleBinding) {
  	    el.styleBinding = styleBinding;
  	  }
  	}
  
  	function genData$1 (el) {
  	  var data = '';
  	  if (el.staticStyle) {
  	    data += "staticStyle:" + (el.staticStyle) + ",";
  	  }
  	  if (el.styleBinding) {
  	    data += "style:(" + (el.styleBinding) + "),";
  	  }
  	  return data
  	}
  
  	var style$1 = {
  	  staticKeys: ['staticStyle'],
  	  transformNode: transformNode$1,
  	  genData: genData$1
  	}
  
  	/*  */
  
  	var decoder;
  
  	var he = {
  	  decode: function decode (html) {
  	    decoder = decoder || document.createElement('div');
  	    decoder.innerHTML = html;
  	    return decoder.textContent
  	  }
  	}
  
  	/*  */
  
  	var isUnaryTag = makeMap(
  	  'area,base,br,col,embed,frame,hr,img,input,isindex,keygen,' +
  	  'link,meta,param,source,track,wbr'
  	);
  
  	// Elements that you can, intentionally, leave open
  	// (and which close themselves)
  	var canBeLeftOpenTag = makeMap(
  	  'colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr,source'
  	);
  
  	// HTML5 tags https://html.spec.whatwg.org/multipage/indices.html#elements-3
  	// Phrasing Content https://html.spec.whatwg.org/multipage/dom.html#phrasing-content
  	var isNonPhrasingTag = makeMap(
  	  'address,article,aside,base,blockquote,body,caption,col,colgroup,dd,' +
  	  'details,dialog,div,dl,dt,fieldset,figcaption,figure,footer,form,' +
  	  'h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,legend,li,menuitem,meta,' +
  	  'optgroup,option,param,rp,rt,source,style,summary,tbody,td,tfoot,th,thead,' +
  	  'title,tr,track'
  	);
  
  	/**
  	 * Not type-checking this file because it's mostly vendor code.
  	 */
  
  	/*!
  	 * HTML Parser By John Resig (ejohn.org)
  	 * Modified by Juriy "kangax" Zaytsev
  	 * Original code by Erik Arvidsson, Mozilla Public License
  	 * http://erik.eae.net/simplehtmlparser/simplehtmlparser.js
  	 */
  
  	// Regular Expressions for parsing tags and attributes
  	var attribute = /^\s*([^\s"'<>\/=]+)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/;
  	// could use https://www.w3.org/TR/1999/REC-xml-names-19990114/#NT-QName
  	// but for Vue templates we can enforce a simple charset
  	var ncname = '[a-zA-Z_][\\w\\-\\.]*';
  	var qnameCapture = "((?:" + ncname + "\\:)?" + ncname + ")";
  	var startTagOpen = new RegExp(("^<" + qnameCapture));
  	var startTagClose = /^\s*(\/?)>/;
  	var endTag = new RegExp(("^<\\/" + qnameCapture + "[^>]*>"));
  	var doctype = /^<!DOCTYPE [^>]+>/i;
  	// #7298: escape - to avoid being pased as HTML comment when inlined in page
  	var comment = /^<!\--/;
  	var conditionalComment = /^<!\[/;
  
  	var IS_REGEX_CAPTURING_BROKEN = false;
  	'x'.replace(/x(.)?/g, function (m, g) {
  	  IS_REGEX_CAPTURING_BROKEN = g === '';
  	});
  
  	// Special Elements (can contain anything)
  	var isPlainTextElement = makeMap('script,style,textarea', true);
  	var reCache = {};
  
  	var decodingMap = {
  	  '&lt;': '<',
  	  '&gt;': '>',
  	  '&quot;': '"',
  	  '&amp;': '&',
  	  '&#10;': '\n',
  	  '&#9;': '\t'
  	};
  	var encodedAttr = /&(?:lt|gt|quot|amp);/g;
  	var encodedAttrWithNewLines = /&(?:lt|gt|quot|amp|#10|#9);/g;
  
  	// #5992
  	var isIgnoreNewlineTag = makeMap('pre,textarea', true);
  	var shouldIgnoreFirstNewline = function (tag, html) { return tag && isIgnoreNewlineTag(tag) && html[0] === '\n'; };
  
  	function decodeAttr (value, shouldDecodeNewlines) {
  	  var re = shouldDecodeNewlines ? encodedAttrWithNewLines : encodedAttr;
  	  return value.replace(re, function (match) { return decodingMap[match]; })
  	}
  
  	function parseHTML (html, options) {
  	  var stack = [];
  	  var expectHTML = options.expectHTML;
  	  var isUnaryTag$$1 = options.isUnaryTag || no;
  	  var canBeLeftOpenTag$$1 = options.canBeLeftOpenTag || no;
  	  var index = 0;
  	  var last, lastTag;
  	  while (html) {
  	    last = html;
  	    // Make sure we're not in a plaintext content element like script/style
  	    if (!lastTag || !isPlainTextElement(lastTag)) {
  	      var textEnd = html.indexOf('<');
  	      if (textEnd === 0) {
  	        // Comment:
  	        if (comment.test(html)) {
  	          var commentEnd = html.indexOf('-->');
  
  	          if (commentEnd >= 0) {
  	            if (options.shouldKeepComment) {
  	              options.comment(html.substring(4, commentEnd));
  	            }
  	            advance(commentEnd + 3);
  	            continue
  	          }
  	        }
  
  	        // http://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment
  	        if (conditionalComment.test(html)) {
  	          var conditionalEnd = html.indexOf(']>');
  
  	          if (conditionalEnd >= 0) {
  	            advance(conditionalEnd + 2);
  	            continue
  	          }
  	        }
  
  	        // Doctype:
  	        var doctypeMatch = html.match(doctype);
  	        if (doctypeMatch) {
  	          advance(doctypeMatch[0].length);
  	          continue
  	        }
  
  	        // End tag:
  	        var endTagMatch = html.match(endTag);
  	        if (endTagMatch) {
  	          var curIndex = index;
  	          advance(endTagMatch[0].length);
  	          parseEndTag(endTagMatch[1], curIndex, index);
  	          continue
  	        }
  
  	        // Start tag:
  	        var startTagMatch = parseStartTag();
  	        if (startTagMatch) {
  	          handleStartTag(startTagMatch);
  	          if (shouldIgnoreFirstNewline(lastTag, html)) {
  	            advance(1);
  	          }
  	          continue
  	        }
  	      }
  
  	      var text = (void 0), rest = (void 0), next = (void 0);
  	      if (textEnd >= 0) {
  	        rest = html.slice(textEnd);
  	        while (
  	          !endTag.test(rest) &&
  	          !startTagOpen.test(rest) &&
  	          !comment.test(rest) &&
  	          !conditionalComment.test(rest)
  	        ) {
  	          // < in plain text, be forgiving and treat it as text
  	          next = rest.indexOf('<', 1);
  	          if (next < 0) { break }
  	          textEnd += next;
  	          rest = html.slice(textEnd);
  	        }
  	        text = html.substring(0, textEnd);
  	        advance(textEnd);
  	      }
  
  	      if (textEnd < 0) {
  	        text = html;
  	        html = '';
  	      }
  
  	      if (options.chars && text) {
  	        options.chars(text);
  	      }
  	    } else {
  	      var endTagLength = 0;
  	      var stackedTag = lastTag.toLowerCase();
  	      var reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)(</' + stackedTag + '[^>]*>)', 'i'));
  	      var rest$1 = html.replace(reStackedTag, function (all, text, endTag) {
  	        endTagLength = endTag.length;
  	        if (!isPlainTextElement(stackedTag) && stackedTag !== 'noscript') {
  	          text = text
  	            .replace(/<!\--([\s\S]*?)-->/g, '$1') // #7298
  	            .replace(/<!\[CDATA\[([\s\S]*?)]]>/g, '$1');
  	        }
  	        if (shouldIgnoreFirstNewline(stackedTag, text)) {
  	          text = text.slice(1);
  	        }
  	        if (options.chars) {
  	          options.chars(text);
  	        }
  	        return ''
  	      });
  	      index += html.length - rest$1.length;
  	      html = rest$1;
  	      parseEndTag(stackedTag, index - endTagLength, index);
  	    }
  
  	    if (html === last) {
  	      options.chars && options.chars(html);
  	      if (false) {
  	        options.warn(("Mal-formatted tag at end of template: \"" + html + "\""));
  	      }
  	      break
  	    }
  	  }
  
  	  // Clean up any remaining tags
  	  parseEndTag();
  
  	  function advance (n) {
  	    index += n;
  	    html = html.substring(n);
  	  }
  
  	  function parseStartTag () {
  	    var start = html.match(startTagOpen);
  	    if (start) {
  	      var match = {
  	        tagName: start[1],
  	        attrs: [],
  	        start: index
  	      };
  	      advance(start[0].length);
  	      var end, attr;
  	      while (!(end = html.match(startTagClose)) && (attr = html.match(attribute))) {
  	        advance(attr[0].length);
  	        match.attrs.push(attr);
  	      }
  	      if (end) {
  	        match.unarySlash = end[1];
  	        advance(end[0].length);
  	        match.end = index;
  	        return match
  	      }
  	    }
  	  }
  
  	  function handleStartTag (match) {
  	    var tagName = match.tagName;
  	    var unarySlash = match.unarySlash;
  
  	    if (expectHTML) {
  	      if (lastTag === 'p' && isNonPhrasingTag(tagName)) {
  	        parseEndTag(lastTag);
  	      }
  	      if (canBeLeftOpenTag$$1(tagName) && lastTag === tagName) {
  	        parseEndTag(tagName);
  	      }
  	    }
  
  	    var unary = isUnaryTag$$1(tagName) || !!unarySlash;
  
  	    var l = match.attrs.length;
  	    var attrs = new Array(l);
  	    for (var i = 0; i < l; i++) {
  	      var args = match.attrs[i];
  	      // hackish work around FF bug https://bugzilla.mozilla.org/show_bug.cgi?id=369778
  	      if (IS_REGEX_CAPTURING_BROKEN && args[0].indexOf('""') === -1) {
  	        if (args[3] === '') { delete args[3]; }
  	        if (args[4] === '') { delete args[4]; }
  	        if (args[5] === '') { delete args[5]; }
  	      }
  	      var value = args[3] || args[4] || args[5] || '';
  	      var shouldDecodeNewlines = tagName === 'a' && args[1] === 'href'
  	        ? options.shouldDecodeNewlinesForHref
  	        : options.shouldDecodeNewlines;
  	      attrs[i] = {
  	        name: args[1],
  	        value: decodeAttr(value, shouldDecodeNewlines)
  	      };
  	    }
  
  	    if (!unary) {
  	      stack.push({ tag: tagName, lowerCasedTag: tagName.toLowerCase(), attrs: attrs });
  	      lastTag = tagName;
  	    }
  
  	    if (options.start) {
  	      options.start(tagName, attrs, unary, match.start, match.end);
  	    }
  	  }
  
  	  function parseEndTag (tagName, start, end) {
  	    var pos, lowerCasedTagName;
  	    if (start == null) { start = index; }
  	    if (end == null) { end = index; }
  
  	    if (tagName) {
  	      lowerCasedTagName = tagName.toLowerCase();
  	    }
  
  	    // Find the closest opened tag of the same type
  	    if (tagName) {
  	      for (pos = stack.length - 1; pos >= 0; pos--) {
  	        if (stack[pos].lowerCasedTag === lowerCasedTagName) {
  	          break
  	        }
  	      }
  	    } else {
  	      // If no tag name is provided, clean shop
  	      pos = 0;
  	    }
  
  	    if (pos >= 0) {
  	      // Close all the open elements, up the stack
  	      for (var i = stack.length - 1; i >= pos; i--) {
  	        if (false
  	        ) {
  	          options.warn(
  	            ("tag <" + (stack[i].tag) + "> has no matching end tag.")
  	          );
  	        }
  	        if (options.end) {
  	          options.end(stack[i].tag, start, end);
  	        }
  	      }
  
  	      // Remove the open elements from the stack
  	      stack.length = pos;
  	      lastTag = pos && stack[pos - 1].tag;
  	    } else if (lowerCasedTagName === 'br') {
  	      if (options.start) {
  	        options.start(tagName, [], true, start, end);
  	      }
  	    } else if (lowerCasedTagName === 'p') {
  	      if (options.start) {
  	        options.start(tagName, [], false, start, end);
  	      }
  	      if (options.end) {
  	        options.end(tagName, start, end);
  	      }
  	    }
  	  }
  	}
  
  	/*  */
  
  	var onRE = /^@|^v-on:/;
  	var dirRE = /^v-|^@|^:/;
  	var forAliasRE = /([^]*?)\s+(?:in|of)\s+([^]*)/;
  	var forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/;
  	var stripParensRE = /^\(|\)$/g;
  
  	var argRE = /:(.*)$/;
  	var bindRE = /^:|^v-bind:/;
  	var modifierRE = /\.[^.]+/g;
  
  	var decodeHTMLCached = cached(he.decode);
  
  	// configurable state
  	var warn$2;
  	var delimiters;
  	var transforms;
  	var preTransforms;
  	var postTransforms;
  	var platformIsPreTag;
  	var platformMustUseProp;
  	var platformGetTagNamespace;
  
  
  
  	function createASTElement (
  	  tag,
  	  attrs,
  	  parent
  	) {
  	  return {
  	    type: 1,
  	    tag: tag,
  	    attrsList: attrs,
  	    attrsMap: makeAttrsMap(attrs),
  	    parent: parent,
  	    children: []
  	  }
  	}
  
  	/**
  	 * Convert HTML string to AST.
  	 */
  	function parse (
  	  template,
  	  options
  	) {
  	  warn$2 = options.warn || baseWarn;
  
  	  platformIsPreTag = options.isPreTag || no;
  	  platformMustUseProp = options.mustUseProp || no;
  	  platformGetTagNamespace = options.getTagNamespace || no;
  
  	  transforms = pluckModuleFunction(options.modules, 'transformNode');
  	  preTransforms = pluckModuleFunction(options.modules, 'preTransformNode');
  	  postTransforms = pluckModuleFunction(options.modules, 'postTransformNode');
  
  	  delimiters = options.delimiters;
  
  	  var stack = [];
  	  var preserveWhitespace = options.preserveWhitespace !== false;
  	  var root;
  	  var currentParent;
  	  var inVPre = false;
  	  var inPre = false;
  	  var warned = false;
  
  	  function warnOnce (msg) {
  	    if (!warned) {
  	      warned = true;
  	      warn$2(msg);
  	    }
  	  }
  
  	  function closeElement (element) {
  	    // check pre state
  	    if (element.pre) {
  	      inVPre = false;
  	    }
  	    if (platformIsPreTag(element.tag)) {
  	      inPre = false;
  	    }
  	    // apply post-transforms
  	    for (var i = 0; i < postTransforms.length; i++) {
  	      postTransforms[i](element, options);
  	    }
  	  }
  
  	  parseHTML(template, {
  	    warn: warn$2,
  	    expectHTML: options.expectHTML,
  	    isUnaryTag: options.isUnaryTag,
  	    canBeLeftOpenTag: options.canBeLeftOpenTag,
  	    shouldDecodeNewlines: options.shouldDecodeNewlines,
  	    shouldDecodeNewlinesForHref: options.shouldDecodeNewlinesForHref,
  	    shouldKeepComment: options.comments,
  	    start: function start (tag, attrs, unary) {
  	      // check namespace.
  	      // inherit parent ns if there is one
  	      var ns = (currentParent && currentParent.ns) || platformGetTagNamespace(tag);
  
  	      // handle IE svg bug
  	      /* istanbul ignore if */
  	      if (isIE && ns === 'svg') {
  	        attrs = guardIESVGBug(attrs);
  	      }
  
  	      var element = createASTElement(tag, attrs, currentParent);
  	      if (ns) {
  	        element.ns = ns;
  	      }
  
  	      if (isForbiddenTag(element) && !isServerRendering()) {
  	        element.forbidden = true;
  	        ("production") !== 'production' && warn$2(
  	          'Templates should only be responsible for mapping the state to the ' +
  	          'UI. Avoid placing tags with side-effects in your templates, such as ' +
  	          "<" + tag + ">" + ', as they will not be parsed.'
  	        );
  	      }
  
  	      // apply pre-transforms
  	      for (var i = 0; i < preTransforms.length; i++) {
  	        element = preTransforms[i](element, options) || element;
  	      }
  
  	      if (!inVPre) {
  	        processPre(element);
  	        if (element.pre) {
  	          inVPre = true;
  	        }
  	      }
  	      if (platformIsPreTag(element.tag)) {
  	        inPre = true;
  	      }
  	      if (inVPre) {
  	        processRawAttrs(element);
  	      } else if (!element.processed) {
  	        // structural directives
  	        processFor(element);
  	        processIf(element);
  	        processOnce(element);
  	        // element-scope stuff
  	        processElement(element, options);
  	      }
  
  	      function checkRootConstraints (el) {
  	        if (false) {
  	          if (el.tag === 'slot' || el.tag === 'template') {
  	            warnOnce(
  	              "Cannot use <" + (el.tag) + "> as component root element because it may " +
  	              'contain multiple nodes.'
  	            );
  	          }
  	          if (el.attrsMap.hasOwnProperty('v-for')) {
  	            warnOnce(
  	              'Cannot use v-for on stateful component root element because ' +
  	              'it renders multiple elements.'
  	            );
  	          }
  	        }
  	      }
  
  	      // tree management
  	      if (!root) {
  	        root = element;
  	        checkRootConstraints(root);
  	      } else if (!stack.length) {
  	        // allow root elements with v-if, v-else-if and v-else
  	        if (root.if && (element.elseif || element.else)) {
  	          checkRootConstraints(element);
  	          addIfCondition(root, {
  	            exp: element.elseif,
  	            block: element
  	          });
  	        } else if (false) {
  	          warnOnce(
  	            "Component template should contain exactly one root element. " +
  	            "If you are using v-if on multiple elements, " +
  	            "use v-else-if to chain them instead."
  	          );
  	        }
  	      }
  	      if (currentParent && !element.forbidden) {
  	        if (element.elseif || element.else) {
  	          processIfConditions(element, currentParent);
  	        } else if (element.slotScope) { // scoped slot
  	          currentParent.plain = false;
  	          var name = element.slotTarget || '"default"';(currentParent.scopedSlots || (currentParent.scopedSlots = {}))[name] = element;
  	        } else {
  	          currentParent.children.push(element);
  	          element.parent = currentParent;
  	        }
  	      }
  	      if (!unary) {
  	        currentParent = element;
  	        stack.push(element);
  	      } else {
  	        closeElement(element);
  	      }
  	    },
  
  	    end: function end () {
  	      // remove trailing whitespace
  	      var element = stack[stack.length - 1];
  	      var lastNode = element.children[element.children.length - 1];
  	      if (lastNode && lastNode.type === 3 && lastNode.text === ' ' && !inPre) {
  	        element.children.pop();
  	      }
  	      // pop stack
  	      stack.length -= 1;
  	      currentParent = stack[stack.length - 1];
  	      closeElement(element);
  	    },
  
  	    chars: function chars (text) {
  	      if (!currentParent) {
  	        if (false) {
  	          if (text === template) {
  	            warnOnce(
  	              'Component template requires a root element, rather than just text.'
  	            );
  	          } else if ((text = text.trim())) {
  	            warnOnce(
  	              ("text \"" + text + "\" outside root element will be ignored.")
  	            );
  	          }
  	        }
  	        return
  	      }
  	      // IE textarea placeholder bug
  	      /* istanbul ignore if */
  	      if (isIE &&
  	        currentParent.tag === 'textarea' &&
  	        currentParent.attrsMap.placeholder === text
  	      ) {
  	        return
  	      }
  	      var children = currentParent.children;
  	      text = inPre || text.trim()
  	        ? isTextTag(currentParent) ? text : decodeHTMLCached(text)
  	        // only preserve whitespace if its not right after a starting tag
  	        : preserveWhitespace && children.length ? ' ' : '';
  	      if (text) {
  	        var res;
  	        if (!inVPre && text !== ' ' && (res = parseText(text, delimiters))) {
  	          children.push({
  	            type: 2,
  	            expression: res.expression,
  	            tokens: res.tokens,
  	            text: text
  	          });
  	        } else if (text !== ' ' || !children.length || children[children.length - 1].text !== ' ') {
  	          children.push({
  	            type: 3,
  	            text: text
  	          });
  	        }
  	      }
  	    },
  	    comment: function comment (text) {
  	      currentParent.children.push({
  	        type: 3,
  	        text: text,
  	        isComment: true
  	      });
  	    }
  	  });
  	  return root
  	}
  
  	function processPre (el) {
  	  if (getAndRemoveAttr(el, 'v-pre') != null) {
  	    el.pre = true;
  	  }
  	}
  
  	function processRawAttrs (el) {
  	  var l = el.attrsList.length;
  	  if (l) {
  	    var attrs = el.attrs = new Array(l);
  	    for (var i = 0; i < l; i++) {
  	      attrs[i] = {
  	        name: el.attrsList[i].name,
  	        value: JSON.stringify(el.attrsList[i].value)
  	      };
  	    }
  	  } else if (!el.pre) {
  	    // non root node in pre blocks with no attributes
  	    el.plain = true;
  	  }
  	}
  
  	function processElement (element, options) {
  	  processKey(element);
  
  	  // determine whether this is a plain element after
  	  // removing structural attributes
  	  element.plain = !element.key && !element.attrsList.length;
  
  	  processRef(element);
  	  processSlot(element);
  	  processComponent(element);
  	  for (var i = 0; i < transforms.length; i++) {
  	    element = transforms[i](element, options) || element;
  	  }
  	  processAttrs(element);
  	}
  
  	function processKey (el) {
  	  var exp = getBindingAttr(el, 'key');
  	  if (exp) {
  	    if (false) {
  	      warn$2("<template> cannot be keyed. Place the key on real elements instead.");
  	    }
  	    el.key = exp;
  	  }
  	}
  
  	function processRef (el) {
  	  var ref = getBindingAttr(el, 'ref');
  	  if (ref) {
  	    el.ref = ref;
  	    el.refInFor = checkInFor(el);
  	  }
  	}
  
  	function processFor (el) {
  	  var exp;
  	  if ((exp = getAndRemoveAttr(el, 'v-for'))) {
  	    var res = parseFor(exp);
  	    if (res) {
  	      extend(el, res);
  	    } else if (false) {
  	      warn$2(
  	        ("Invalid v-for expression: " + exp)
  	      );
  	    }
  	  }
  	}
  
  
  
  	function parseFor (exp) {
  	  var inMatch = exp.match(forAliasRE);
  	  if (!inMatch) { return }
  	  var res = {};
  	  res.for = inMatch[2].trim();
  	  var alias = inMatch[1].trim().replace(stripParensRE, '');
  	  var iteratorMatch = alias.match(forIteratorRE);
  	  if (iteratorMatch) {
  	    res.alias = alias.replace(forIteratorRE, '');
  	    res.iterator1 = iteratorMatch[1].trim();
  	    if (iteratorMatch[2]) {
  	      res.iterator2 = iteratorMatch[2].trim();
  	    }
  	  } else {
  	    res.alias = alias;
  	  }
  	  return res
  	}
  
  	function processIf (el) {
  	  var exp = getAndRemoveAttr(el, 'v-if');
  	  if (exp) {
  	    el.if = exp;
  	    addIfCondition(el, {
  	      exp: exp,
  	      block: el
  	    });
  	  } else {
  	    if (getAndRemoveAttr(el, 'v-else') != null) {
  	      el.else = true;
  	    }
  	    var elseif = getAndRemoveAttr(el, 'v-else-if');
  	    if (elseif) {
  	      el.elseif = elseif;
  	    }
  	  }
  	}
  
  	function processIfConditions (el, parent) {
  	  var prev = findPrevElement(parent.children);
  	  if (prev && prev.if) {
  	    addIfCondition(prev, {
  	      exp: el.elseif,
  	      block: el
  	    });
  	  } else if (false) {
  	    warn$2(
  	      "v-" + (el.elseif ? ('else-if="' + el.elseif + '"') : 'else') + " " +
  	      "used on element <" + (el.tag) + "> without corresponding v-if."
  	    );
  	  }
  	}
  
  	function findPrevElement (children) {
  	  var i = children.length;
  	  while (i--) {
  	    if (children[i].type === 1) {
  	      return children[i]
  	    } else {
  	      if (false) {
  	        warn$2(
  	          "text \"" + (children[i].text.trim()) + "\" between v-if and v-else(-if) " +
  	          "will be ignored."
  	        );
  	      }
  	      children.pop();
  	    }
  	  }
  	}
  
  	function addIfCondition (el, condition) {
  	  if (!el.ifConditions) {
  	    el.ifConditions = [];
  	  }
  	  el.ifConditions.push(condition);
  	}
  
  	function processOnce (el) {
  	  var once$$1 = getAndRemoveAttr(el, 'v-once');
  	  if (once$$1 != null) {
  	    el.once = true;
  	  }
  	}
  
  	function processSlot (el) {
  	  if (el.tag === 'slot') {
  	    el.slotName = getBindingAttr(el, 'name');
  	    if (false) {
  	      warn$2(
  	        "`key` does not work on <slot> because slots are abstract outlets " +
  	        "and can possibly expand into multiple elements. " +
  	        "Use the key on a wrapping element instead."
  	      );
  	    }
  	  } else {
  	    var slotScope;
  	    if (el.tag === 'template') {
  	      slotScope = getAndRemoveAttr(el, 'scope');
  	      /* istanbul ignore if */
  	      if (false) {
  	        warn$2(
  	          "the \"scope\" attribute for scoped slots have been deprecated and " +
  	          "replaced by \"slot-scope\" since 2.5. The new \"slot-scope\" attribute " +
  	          "can also be used on plain elements in addition to <template> to " +
  	          "denote scoped slots.",
  	          true
  	        );
  	      }
  	      el.slotScope = slotScope || getAndRemoveAttr(el, 'slot-scope');
  	    } else if ((slotScope = getAndRemoveAttr(el, 'slot-scope'))) {
  	      /* istanbul ignore if */
  	      if (false) {
  	        warn$2(
  	          "Ambiguous combined usage of slot-scope and v-for on <" + (el.tag) + "> " +
  	          "(v-for takes higher priority). Use a wrapper <template> for the " +
  	          "scoped slot to make it clearer.",
  	          true
  	        );
  	      }
  	      el.slotScope = slotScope;
  	    }
  	    var slotTarget = getBindingAttr(el, 'slot');
  	    if (slotTarget) {
  	      el.slotTarget = slotTarget === '""' ? '"default"' : slotTarget;
  	      // preserve slot as an attribute for native shadow DOM compat
  	      // only for non-scoped slots.
  	      if (el.tag !== 'template' && !el.slotScope) {
  	        addAttr(el, 'slot', slotTarget);
  	      }
  	    }
  	  }
  	}
  
  	function processComponent (el) {
  	  var binding;
  	  if ((binding = getBindingAttr(el, 'is'))) {
  	    el.component = binding;
  	  }
  	  if (getAndRemoveAttr(el, 'inline-template') != null) {
  	    el.inlineTemplate = true;
  	  }
  	}
  
  	function processAttrs (el) {
  	  var list = el.attrsList;
  	  var i, l, name, rawName, value, modifiers, isProp;
  	  for (i = 0, l = list.length; i < l; i++) {
  	    name = rawName = list[i].name;
  	    value = list[i].value;
  	    if (dirRE.test(name)) {
  	      // mark element as dynamic
  	      el.hasBindings = true;
  	      // modifiers
  	      modifiers = parseModifiers(name);
  	      if (modifiers) {
  	        name = name.replace(modifierRE, '');
  	      }
  	      if (bindRE.test(name)) { // v-bind
  	        name = name.replace(bindRE, '');
  	        value = parseFilters(value);
  	        isProp = false;
  	        if (modifiers) {
  	          if (modifiers.prop) {
  	            isProp = true;
  	            name = camelize(name);
  	            if (name === 'innerHtml') { name = 'innerHTML'; }
  	          }
  	          if (modifiers.camel) {
  	            name = camelize(name);
  	          }
  	          if (modifiers.sync) {
  	            addHandler(
  	              el,
  	              ("update:" + (camelize(name))),
  	              genAssignmentCode(value, "$event")
  	            );
  	          }
  	        }
  	        if (isProp || (
  	          !el.component && platformMustUseProp(el.tag, el.attrsMap.type, name)
  	        )) {
  	          addProp(el, name, value);
  	        } else {
  	          addAttr(el, name, value);
  	        }
  	      } else if (onRE.test(name)) { // v-on
  	        name = name.replace(onRE, '');
  	        addHandler(el, name, value, modifiers, false, warn$2);
  	      } else { // normal directives
  	        name = name.replace(dirRE, '');
  	        // parse arg
  	        var argMatch = name.match(argRE);
  	        var arg = argMatch && argMatch[1];
  	        if (arg) {
  	          name = name.slice(0, -(arg.length + 1));
  	        }
  	        addDirective(el, name, rawName, value, arg, modifiers);
  	        if (false) {
  	          checkForAliasModel(el, value);
  	        }
  	      }
  	    } else {
  	      // literal attribute
  	      if (false) {
  	        var res = parseText(value, delimiters);
  	        if (res) {
  	          warn$2(
  	            name + "=\"" + value + "\": " +
  	            'Interpolation inside attributes has been removed. ' +
  	            'Use v-bind or the colon shorthand instead. For example, ' +
  	            'instead of <div id="{{ val }}">, use <div :id="val">.'
  	          );
  	        }
  	      }
  	      addAttr(el, name, JSON.stringify(value));
  	      // #6887 firefox doesn't update muted state if set via attribute
  	      // even immediately after element creation
  	      if (!el.component &&
  	          name === 'muted' &&
  	          platformMustUseProp(el.tag, el.attrsMap.type, name)) {
  	        addProp(el, name, 'true');
  	      }
  	    }
  	  }
  	}
  
  	function checkInFor (el) {
  	  var parent = el;
  	  while (parent) {
  	    if (parent.for !== undefined) {
  	      return true
  	    }
  	    parent = parent.parent;
  	  }
  	  return false
  	}
  
  	function parseModifiers (name) {
  	  var match = name.match(modifierRE);
  	  if (match) {
  	    var ret = {};
  	    match.forEach(function (m) { ret[m.slice(1)] = true; });
  	    return ret
  	  }
  	}
  
  	function makeAttrsMap (attrs) {
  	  var map = {};
  	  for (var i = 0, l = attrs.length; i < l; i++) {
  	    if (
  	      false
  	    ) {
  	      warn$2('duplicate attribute: ' + attrs[i].name);
  	    }
  	    map[attrs[i].name] = attrs[i].value;
  	  }
  	  return map
  	}
  
  	// for script (e.g. type="x/template") or style, do not decode content
  	function isTextTag (el) {
  	  return el.tag === 'script' || el.tag === 'style'
  	}
  
  	function isForbiddenTag (el) {
  	  return (
  	    el.tag === 'style' ||
  	    (el.tag === 'script' && (
  	      !el.attrsMap.type ||
  	      el.attrsMap.type === 'text/javascript'
  	    ))
  	  )
  	}
  
  	var ieNSBug = /^xmlns:NS\d+/;
  	var ieNSPrefix = /^NS\d+:/;
  
  	/* istanbul ignore next */
  	function guardIESVGBug (attrs) {
  	  var res = [];
  	  for (var i = 0; i < attrs.length; i++) {
  	    var attr = attrs[i];
  	    if (!ieNSBug.test(attr.name)) {
  	      attr.name = attr.name.replace(ieNSPrefix, '');
  	      res.push(attr);
  	    }
  	  }
  	  return res
  	}
  
  	function checkForAliasModel (el, value) {
  	  var _el = el;
  	  while (_el) {
  	    if (_el.for && _el.alias === value) {
  	      warn$2(
  	        "<" + (el.tag) + " v-model=\"" + value + "\">: " +
  	        "You are binding v-model directly to a v-for iteration alias. " +
  	        "This will not be able to modify the v-for source array because " +
  	        "writing to the alias is like modifying a function local variable. " +
  	        "Consider using an array of objects and use v-model on an object property instead."
  	      );
  	    }
  	    _el = _el.parent;
  	  }
  	}
  
  	/*  */
  
  	/**
  	 * Expand input[v-model] with dyanmic type bindings into v-if-else chains
  	 * Turn this:
  	 *   <input v-model="data[type]" :type="type">
  	 * into this:
  	 *   <input v-if="type === 'checkbox'" type="checkbox" v-model="data[type]">
  	 *   <input v-else-if="type === 'radio'" type="radio" v-model="data[type]">
  	 *   <input v-else :type="type" v-model="data[type]">
  	 */
  
  	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$2 = {
  	  preTransformNode: preTransformNode
  	}
  
  	var modules$1 = [
  	  klass$1,
  	  style$1,
  	  model$2
  	]
  
  	/*  */
  
  	function text (el, dir) {
  	  if (dir.value) {
  	    addProp(el, 'textContent', ("_s(" + (dir.value) + ")"));
  	  }
  	}
  
  	/*  */
  
  	function html (el, dir) {
  	  if (dir.value) {
  	    addProp(el, 'innerHTML', ("_s(" + (dir.value) + ")"));
  	  }
  	}
  
  	var directives$1 = {
  	  model: model,
  	  text: text,
  	  html: html
  	}
  
  	/*  */
  
  	var baseOptions = {
  	  expectHTML: true,
  	  modules: modules$1,
  	  directives: directives$1,
  	  isPreTag: isPreTag,
  	  isUnaryTag: isUnaryTag,
  	  mustUseProp: mustUseProp,
  	  canBeLeftOpenTag: canBeLeftOpenTag,
  	  isReservedTag: isReservedTag,
  	  getTagNamespace: getTagNamespace,
  	  staticKeys: genStaticKeys(modules$1)
  	};
  
  	/*  */
  
  	var isStaticKey;
  	var isPlatformReservedTag;
  
  	var genStaticKeysCached = cached(genStaticKeys$1);
  
  	/**
  	 * Goal of the optimizer: walk the generated template AST tree
  	 * and detect sub-trees that are purely static, i.e. parts of
  	 * the DOM that never needs to change.
  	 *
  	 * Once we detect these sub-trees, we can:
  	 *
  	 * 1. Hoist them into constants, so that we no longer need to
  	 *    create fresh nodes for them on each re-render;
  	 * 2. Completely skip them in the patching process.
  	 */
  	function optimize (root, options) {
  	  if (!root) { return }
  	  isStaticKey = genStaticKeysCached(options.staticKeys || '');
  	  isPlatformReservedTag = options.isReservedTag || no;
  	  // first pass: mark all non-static nodes.
  	  markStatic$1(root);
  	  // second pass: mark static roots.
  	  markStaticRoots(root, false);
  	}
  
  	function genStaticKeys$1 (keys) {
  	  return makeMap(
  	    'type,tag,attrsList,attrsMap,plain,parent,children,attrs' +
  	    (keys ? ',' + keys : '')
  	  )
  	}
  
  	function markStatic$1 (node) {
  	  node.static = isStatic(node);
  	  if (node.type === 1) {
  	    // do not make component slot content static. this avoids
  	    // 1. components not able to mutate slot nodes
  	    // 2. static slot content fails for hot-reloading
  	    if (
  	      !isPlatformReservedTag(node.tag) &&
  	      node.tag !== 'slot' &&
  	      node.attrsMap['inline-template'] == null
  	    ) {
  	      return
  	    }
  	    for (var i = 0, l = node.children.length; i < l; i++) {
  	      var child = node.children[i];
  	      markStatic$1(child);
  	      if (!child.static) {
  	        node.static = false;
  	      }
  	    }
  	    if (node.ifConditions) {
  	      for (var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
  	        var block = node.ifConditions[i$1].block;
  	        markStatic$1(block);
  	        if (!block.static) {
  	          node.static = false;
  	        }
  	      }
  	    }
  	  }
  	}
  
  	function markStaticRoots (node, isInFor) {
  	  if (node.type === 1) {
  	    if (node.static || node.once) {
  	      node.staticInFor = isInFor;
  	    }
  	    // For a node to qualify as a static root, it should have children that
  	    // are not just static text. Otherwise the cost of hoisting out will
  	    // outweigh the benefits and it's better off to just always render it fresh.
  	    if (node.static && node.children.length && !(
  	      node.children.length === 1 &&
  	      node.children[0].type === 3
  	    )) {
  	      node.staticRoot = true;
  	      return
  	    } else {
  	      node.staticRoot = false;
  	    }
  	    if (node.children) {
  	      for (var i = 0, l = node.children.length; i < l; i++) {
  	        markStaticRoots(node.children[i], isInFor || !!node.for);
  	      }
  	    }
  	    if (node.ifConditions) {
  	      for (var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
  	        markStaticRoots(node.ifConditions[i$1].block, isInFor);
  	      }
  	    }
  	  }
  	}
  
  	function isStatic (node) {
  	  if (node.type === 2) { // expression
  	    return false
  	  }
  	  if (node.type === 3) { // text
  	    return true
  	  }
  	  return !!(node.pre || (
  	    !node.hasBindings && // no dynamic bindings
  	    !node.if && !node.for && // not v-if or v-for or v-else
  	    !isBuiltInTag(node.tag) && // not a built-in
  	    isPlatformReservedTag(node.tag) && // not a component
  	    !isDirectChildOfTemplateFor(node) &&
  	    Object.keys(node).every(isStaticKey)
  	  ))
  	}
  
  	function isDirectChildOfTemplateFor (node) {
  	  while (node.parent) {
  	    node = node.parent;
  	    if (node.tag !== 'template') {
  	      return false
  	    }
  	    if (node.for) {
  	      return true
  	    }
  	  }
  	  return false
  	}
  
  	/*  */
  
  	var fnExpRE = /^([\w$_]+|\([^)]*?\))\s*=>|^function\s*\(/;
  	var simplePathRE = /^[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['[^']*?']|\["[^"]*?"]|\[\d+]|\[[A-Za-z_$][\w$]*])*$/;
  
  	// KeyboardEvent.keyCode aliases
  	var keyCodes = {
  	  esc: 27,
  	  tab: 9,
  	  enter: 13,
  	  space: 32,
  	  up: 38,
  	  left: 37,
  	  right: 39,
  	  down: 40,
  	  'delete': [8, 46]
  	};
  
  	// KeyboardEvent.key aliases
  	var keyNames = {
  	  esc: 'Escape',
  	  tab: 'Tab',
  	  enter: 'Enter',
  	  space: ' ',
  	  // #7806: IE11 uses key names without `Arrow` prefix for arrow keys.
  	  up: ['Up', 'ArrowUp'],
  	  left: ['Left', 'ArrowLeft'],
  	  right: ['Right', 'ArrowRight'],
  	  down: ['Down', 'ArrowDown'],
  	  'delete': ['Backspace', 'Delete']
  	};
  
  	// #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,
  	  warn
  	) {
  	  var res = isNative ? 'nativeOn:{' : 'on:{';
  	  for (var name in events) {
  	    res += "\"" + name + "\":" + (genHandler(name, events[name])) + ",";
  	  }
  	  return res.slice(0, -1) + '}'
  	}
  
  	function genHandler (
  	  name,
  	  handler
  	) {
  	  if (!handler) {
  	    return 'function(){}'
  	  }
  
  	  if (Array.isArray(handler)) {
  	    return ("[" + (handler.map(function (handler) { return genHandler(name, handler); }).join(',')) + "]")
  	  }
  
  	  var isMethodPath = simplePathRE.test(handler.value);
  	  var isFunctionExpression = fnExpRE.test(handler.value);
  
  	  if (!handler.modifiers) {
  	    if (isMethodPath || isFunctionExpression) {
  	      return handler.value
  	    }
  	    /* istanbul ignore if */
  	    return ("function($event){" + (handler.value) + "}") // inline statement
  	  } else {
  	    var code = '';
  	    var genModifierCode = '';
  	    var keys = [];
  	    for (var key in handler.modifiers) {
  	      if (modifierCode[key]) {
  	        genModifierCode += modifierCode[key];
  	        // left/right
  	        if (keyCodes[key]) {
  	          keys.push(key);
  	        }
  	      } else if (key === 'exact') {
  	        var modifiers = (handler.modifiers);
  	        genModifierCode += genGuard(
  	          ['ctrl', 'shift', 'alt', 'meta']
  	            .filter(function (keyModifier) { return !modifiers[keyModifier]; })
  	            .map(function (keyModifier) { return ("$event." + keyModifier + "Key"); })
  	            .join('||')
  	        );
  	      } else {
  	        keys.push(key);
  	      }
  	    }
  	    if (keys.length) {
  	      code += genKeyFilter(keys);
  	    }
  	    // Make sure modifiers like prevent and stop get executed after key filtering
  	    if (genModifierCode) {
  	      code += genModifierCode;
  	    }
  	    var handlerCode = isMethodPath
  	      ? ("return " + (handler.value) + "($event)")
  	      : isFunctionExpression
  	        ? ("return (" + (handler.value) + ")($event)")
  	        : handler.value;
  	    /* istanbul ignore if */
  	    return ("function($event){" + code + handlerCode + "}")
  	  }
  	}
  
  	function genKeyFilter (keys) {
  	  return ("if(!('button' in $event)&&" + (keys.map(genFilterCode).join('&&')) + ")return null;")
  	}
  
  	function genFilterCode (key) {
  	  var keyVal = parseInt(key, 10);
  	  if (keyVal) {
  	    return ("$event.keyCode!==" + keyVal)
  	  }
  	  var keyCode = keyCodes[key];
  	  var keyName = keyNames[key];
  	  return (
  	    "_k($event.keyCode," +
  	    (JSON.stringify(key)) + "," +
  	    (JSON.stringify(keyCode)) + "," +
  	    "$event.key," +
  	    "" + (JSON.stringify(keyName)) +
  	    ")"
  	  )
  	}
  
  	/*  */
  
  	function on (el, dir) {
  	  if (false) {
  	    warn("v-on without argument does not support modifiers.");
  	  }
  	  el.wrapListeners = function (code) { return ("_g(" + code + "," + (dir.value) + ")"); };
  	}
  
  	/*  */
  
  	function bind$1 (el, dir) {
  	  el.wrapData = function (code) {
  	    return ("_b(" + code + ",'" + (el.tag) + "'," + (dir.value) + "," + (dir.modifiers && dir.modifiers.prop ? 'true' : 'false') + (dir.modifiers && dir.modifiers.sync ? ',true' : '') + ")")
  	  };
  	}
  
  	/*  */
  
  	var baseDirectives = {
  	  on: on,
  	  bind: bind$1,
  	  cloak: noop
  	}
  
  	/*  */
  
  	var CodegenState = function CodegenState (options) {
  	  this.options = options;
  	  this.warn = options.warn || baseWarn;
  	  this.transforms = pluckModuleFunction(options.modules, 'transformCode');
  	  this.dataGenFns = pluckModuleFunction(options.modules, 'genData');
  	  this.directives = extend(extend({}, baseDirectives), options.directives);
  	  var isReservedTag = options.isReservedTag || no;
  	  this.maybeComponent = function (el) { return !isReservedTag(el.tag); };
  	  this.onceId = 0;
  	  this.staticRenderFns = [];
  	};
  
  
  
  	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.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) {
  	    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 = el.plain ? undefined : 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;
  	  state.staticRenderFns.push(("with(this){return " + (genElement(el, state)) + "}"));
  	  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) {
  	      ("production") !== 'production' && state.warn(
  	        "v-once can only be used inside v-for that is keyed. "
  	      );
  	      return genElement(el, state)
  	    }
  	    return ("_o(" + (genElement(el, state)) + "," + (state.onceId++) + "," + key + ")")
  	  } else {
  	    return genStatic(el, state)
  	  }
  	}
  
  	function genIf (
  	  el,
  	  state,
  	  altGen,
  	  altEmpty
  	) {
  	  el.ifProcessed = true; // avoid recursion
  	  return genIfConditions(el.ifConditions.slice(), state, altGen, altEmpty)
  	}
  
  	function genIfConditions (
  	  conditions,
  	  state,
  	  altGen,
  	  altEmpty
  	) {
  	  if (!conditions.length) {
  	    return altEmpty || '_e()'
  	  }
  
  	  var condition = conditions.shift();
  	  if (condition.exp) {
  	    return ("(" + (condition.exp) + ")?" + (genTernaryExp(condition.block)) + ":" + (genIfConditions(conditions, state, altGen, altEmpty)))
  	  } else {
  	    return ("" + (genTernaryExp(condition.block)))
  	  }
  
  	  // v-if with v-once should generate code like (a)?_m(0):_m(1)
  	  function genTernaryExp (el) {
  	    return altGen
  	      ? altGen(el, state)
  	      : el.once
  	        ? genOnce(el, state)
  	        : genElement(el, state)
  	  }
  	}
  
  	function genFor (
  	  el,
  	  state,
  	  altGen,
  	  altHelper
  	) {
  	  var exp = el.for;
  	  var alias = el.alias;
  	  var iterator1 = el.iterator1 ? ("," + (el.iterator1)) : '';
  	  var iterator2 = el.iterator2 ? ("," + (el.iterator2)) : '';
  
  	  if (false
  	  ) {
  	    state.warn(
  	      "<" + (el.tag) + " v-for=\"" + alias + " in " + exp + "\">: component lists rendered with " +
  	      "v-for should have explicit keys. " +
  	      "See https://vuejs.org/guide/list.html#key for more info.",
  	      true /* tip */
  	    );
  	  }
  
  	  el.forProcessed = true; // avoid recursion
  	  return (altHelper || '_l') + "((" + exp + ")," +
  	    "function(" + alias + iterator1 + iterator2 + "){" +
  	      "return " + ((altGen || genElement)(el, state)) +
  	    '})'
  	}
  
  	function genData$2 (el, state) {
  	  var data = '{';
  
  	  // directives first.
  	  // directives may mutate the el's other properties before they are generated.
  	  var dirs = genDirectives(el, state);
  	  if (dirs) { data += dirs + ','; }
  
  	  // key
  	  if (el.key) {
  	    data += "key:" + (el.key) + ",";
  	  }
  	  // ref
  	  if (el.ref) {
  	    data += "ref:" + (el.ref) + ",";
  	  }
  	  if (el.refInFor) {
  	    data += "refInFor:true,";
  	  }
  	  // pre
  	  if (el.pre) {
  	    data += "pre:true,";
  	  }
  	  // record original tag name for components using "is" attribute
  	  if (el.component) {
  	    data += "tag:\"" + (el.tag) + "\",";
  	  }
  	  // module data generation functions
  	  for (var i = 0; i < state.dataGenFns.length; i++) {
  	    data += state.dataGenFns[i](el);
  	  }
  	  // attributes
  	  if (el.attrs) {
  	    data += "attrs:{" + (genProps(el.attrs)) + "},";
  	  }
  	  // DOM props
  	  if (el.props) {
  	    data += "domProps:{" + (genProps(el.props)) + "},";
  	  }
  	  // event handlers
  	  if (el.events) {
  	    data += (genHandlers(el.events, false, state.warn)) + ",";
  	  }
  	  if (el.nativeEvents) {
  	    data += (genHandlers(el.nativeEvents, true, state.warn)) + ",";
  	  }
  	  // slot target
  	  // only for non-scoped slots
  	  if (el.slotTarget && !el.slotScope) {
  	    data += "slot:" + (el.slotTarget) + ",";
  	  }
  	  // scoped slots
  	  if (el.scopedSlots) {
  	    data += (genScopedSlots(el.scopedSlots, state)) + ",";
  	  }
  	  // component v-model
  	  if (el.model) {
  	    data += "model:{value:" + (el.model.value) + ",callback:" + (el.model.callback) + ",expression:" + (el.model.expression) + "},";
  	  }
  	  // inline-template
  	  if (el.inlineTemplate) {
  	    var inlineTemplate = genInlineTemplate(el, state);
  	    if (inlineTemplate) {
  	      data += inlineTemplate + ",";
  	    }
  	  }
  	  data = data.replace(/,$/, '') + '}';
  	  // v-bind data wrap
  	  if (el.wrapData) {
  	    data = el.wrapData(data);
  	  }
  	  // v-on data wrap
  	  if (el.wrapListeners) {
  	    data = el.wrapListeners(data);
  	  }
  	  return data
  	}
  
  	function genDirectives (el, state) {
  	  var dirs = el.directives;
  	  if (!dirs) { return }
  	  var res = 'directives:[';
  	  var hasRuntime = false;
  	  var i, l, dir, needRuntime;
  	  for (i = 0, l = dirs.length; i < l; i++) {
  	    dir = dirs[i];
  	    needRuntime = true;
  	    var gen = state.directives[dir.name];
  	    if (gen) {
  	      // compile-time directive that manipulates AST.
  	      // returns true if it also needs a runtime counterpart.
  	      needRuntime = !!gen(el, dir, state.warn);
  	    }
  	    if (needRuntime) {
  	      hasRuntime = true;
  	      res += "{name:\"" + (dir.name) + "\",rawName:\"" + (dir.rawName) + "\"" + (dir.value ? (",value:(" + (dir.value) + "),expression:" + (JSON.stringify(dir.value))) : '') + (dir.arg ? (",arg:\"" + (dir.arg) + "\"") : '') + (dir.modifiers ? (",modifiers:" + (JSON.stringify(dir.modifiers))) : '') + "},";
  	    }
  	  }
  	  if (hasRuntime) {
  	    return res.slice(0, -1) + ']'
  	  }
  	}
  
  	function genInlineTemplate (el, state) {
  	  var ast = el.children[0];
  	  if (false) {
  	    state.warn('Inline-template components must have exactly one child element.');
  	  }
  	  if (ast.type === 1) {
  	    var inlineRenderFns = generate(ast, state.options);
  	    return ("inlineTemplate:{render:function(){" + (inlineRenderFns.render) + "},staticRenderFns:[" + (inlineRenderFns.staticRenderFns.map(function (code) { return ("function(){" + code + "}"); }).join(',')) + "]}")
  	  }
  	}
  
  	function genScopedSlots (
  	  slots,
  	  state
  	) {
  	  return ("scopedSlots:_u([" + (Object.keys(slots).map(function (key) {
  	      return genScopedSlot(key, slots[key], state)
  	    }).join(',')) + "])")
  	}
  
  	function genScopedSlot (
  	  key,
  	  el,
  	  state
  	) {
  	  if (el.for && !el.forProcessed) {
  	    return genForScopedSlot(key, el, state)
  	  }
  	  var fn = "function(" + (String(el.slotScope)) + "){" +
  	    "return " + (el.tag === 'template'
  	      ? el.if
  	        ? ((el.if) + "?" + (genChildren(el, state) || 'undefined') + ":undefined")
  	        : genChildren(el, state) || 'undefined'
  	      : genElement(el, state)) + "}";
  	  return ("{key:" + key + ",fn:" + fn + "}")
  	}
  
  	function genForScopedSlot (
  	  key,
  	  el,
  	  state
  	) {
  	  var exp = el.for;
  	  var alias = el.alias;
  	  var iterator1 = el.iterator1 ? ("," + (el.iterator1)) : '';
  	  var iterator2 = el.iterator2 ? ("," + (el.iterator2)) : '';
  	  el.forProcessed = true; // avoid recursion
  	  return "_l((" + exp + ")," +
  	    "function(" + alias + iterator1 + iterator2 + "){" +
  	      "return " + (genScopedSlot(key, el, state)) +
  	    '})'
  	}
  
  	function genChildren (
  	  el,
  	  state,
  	  checkSkip,
  	  altGenElement,
  	  altGenNode
  	) {
  	  var children = el.children;
  	  if (children.length) {
  	    var el$1 = children[0];
  	    // optimize single v-for
  	    if (children.length === 1 &&
  	      el$1.for &&
  	      el$1.tag !== 'template' &&
  	      el$1.tag !== 'slot'
  	    ) {
  	      return (altGenElement || genElement)(el$1, state)
  	    }
  	    var normalizationType = checkSkip
  	      ? getNormalizationType(children, state.maybeComponent)
  	      : 0;
  	    var gen = altGenNode || genNode;
  	    return ("[" + (children.map(function (c) { return gen(c, state); }).join(',')) + "]" + (normalizationType ? ("," + normalizationType) : ''))
  	  }
  	}
  
  	// determine the normalization needed for the children array.
  	// 0: no normalization needed
  	// 1: simple normalization needed (possible 1-level deep nested array)
  	// 2: full normalization needed
  	function getNormalizationType (
  	  children,
  	  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)
  	  } if (node.type === 3 && node.isComment) {
  	    return genComment(node)
  	  } else {
  	    return genText(node)
  	  }
  	}
  
  	function genText (text) {
  	  return ("_v(" + (text.type === 2
  	    ? text.expression // no need for () because already wrapped in _s()
  	    : transformSpecialNewlines(JSON.stringify(text.text))) + ")")
  	}
  
  	function genComment (comment) {
  	  return ("_e(" + (JSON.stringify(comment.text)) + ")")
  	}
  
  	function genSlot (el, state) {
  	  var slotName = el.slotName || '"default"';
  	  var children = genChildren(el, state);
  	  var res = "_t(" + slotName + (children ? ("," + children) : '');
  	  var attrs = el.attrs && ("{" + (el.attrs.map(function (a) { return ((camelize(a.name)) + ":" + (a.value)); }).join(',')) + "}");
  	  var bind$$1 = el.attrsMap['v-bind'];
  	  if ((attrs || bind$$1) && !children) {
  	    res += ",null";
  	  }
  	  if (attrs) {
  	    res += "," + attrs;
  	  }
  	  if (bind$$1) {
  	    res += (attrs ? '' : ',null') + "," + bind$$1;
  	  }
  	  return res + ')'
  	}
  
  	// componentName is el.component, take it as argument to shun flow's pessimistic refinement
  	function genComponent (
  	  componentName,
  	  el,
  	  state
  	) {
  	  var children = el.inlineTemplate ? null : genChildren(el, state, true);
  	  return ("_c(" + componentName + "," + (genData$2(el, state)) + (children ? ("," + children) : '') + ")")
  	}
  
  	function genProps (props) {
  	  var res = '';
  	  for (var i = 0; i < props.length; i++) {
  	    var prop = props[i];
  	    /* istanbul ignore if */
  	    {
  	      res += "\"" + (prop.name) + "\":" + (transformSpecialNewlines(prop.value)) + ",";
  	    }
  	  }
  	  return res.slice(0, -1)
  	}
  
  	// #3895, #4268
  	function transformSpecialNewlines (text) {
  	  return text
  	    .replace(/\u2028/g, '\\u2028')
  	    .replace(/\u2029/g, '\\u2029')
  	}
  
  	/*  */
  
  	// these keywords should not appear inside expressions, but operators like
  	// typeof, instanceof and in are allowed
  	var prohibitedKeywordRE = new RegExp('\\b' + (
  	  'do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const,' +
  	  'super,throw,while,yield,delete,export,import,return,switch,default,' +
  	  'extends,finally,continue,debugger,function,arguments'
  	).split(',').join('\\b|\\b') + '\\b');
  
  	// these unary operators should not be used as property/method names
  	var unaryOperatorsRE = new RegExp('\\b' + (
  	  'delete,typeof,void'
  	).split(',').join('\\s*\\([^\\)]*\\)|\\b') + '\\s*\\([^\\)]*\\)');
  
  	// strip strings in expressions
  	var stripStringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g;
  
  	// detect problematic expressions in a template
  	function detectErrors (ast) {
  	  var errors = [];
  	  if (ast) {
  	    checkNode(ast, errors);
  	  }
  	  return errors
  	}
  
  	function checkNode (node, errors) {
  	  if (node.type === 1) {
  	    for (var name in node.attrsMap) {
  	      if (dirRE.test(name)) {
  	        var value = node.attrsMap[name];
  	        if (value) {
  	          if (name === 'v-for') {
  	            checkFor(node, ("v-for=\"" + value + "\""), errors);
  	          } else if (onRE.test(name)) {
  	            checkEvent(value, (name + "=\"" + value + "\""), errors);
  	          } else {
  	            checkExpression(value, (name + "=\"" + value + "\""), errors);
  	          }
  	        }
  	      }
  	    }
  	    if (node.children) {
  	      for (var i = 0; i < node.children.length; i++) {
  	        checkNode(node.children[i], errors);
  	      }
  	    }
  	  } else if (node.type === 2) {
  	    checkExpression(node.expression, node.text, errors);
  	  }
  	}
  
  	function checkEvent (exp, text, errors) {
  	  var stipped = exp.replace(stripStringRE, '');
  	  var keywordMatch = stipped.match(unaryOperatorsRE);
  	  if (keywordMatch && stipped.charAt(keywordMatch.index - 1) !== '$') {
  	    errors.push(
  	      "avoid using JavaScript unary operator as property name: " +
  	      "\"" + (keywordMatch[0]) + "\" in expression " + (text.trim())
  	    );
  	  }
  	  checkExpression(exp, text, errors);
  	}
  
  	function checkFor (node, text, errors) {
  	  checkExpression(node.for || '', text, errors);
  	  checkIdentifier(node.alias, 'v-for alias', text, errors);
  	  checkIdentifier(node.iterator1, 'v-for iterator', text, errors);
  	  checkIdentifier(node.iterator2, 'v-for iterator', text, errors);
  	}
  
  	function checkIdentifier (
  	  ident,
  	  type,
  	  text,
  	  errors
  	) {
  	  if (typeof ident === 'string') {
  	    try {
  	      new Function(("var " + ident + "=_"));
  	    } catch (e) {
  	      errors.push(("invalid " + type + " \"" + ident + "\" in expression: " + (text.trim())));
  	    }
  	  }
  	}
  
  	function checkExpression (exp, text, errors) {
  	  try {
  	    new Function(("return " + exp));
  	  } catch (e) {
  	    var keywordMatch = exp.replace(stripStringRE, '').match(prohibitedKeywordRE);
  	    if (keywordMatch) {
  	      errors.push(
  	        "avoid using JavaScript keyword as property name: " +
  	        "\"" + (keywordMatch[0]) + "\"\n  Raw expression: " + (text.trim())
  	      );
  	    } else {
  	      errors.push(
  	        "invalid expression: " + (e.message) + " in\n\n" +
  	        "    " + exp + "\n\n" +
  	        "  Raw expression: " + (text.trim()) + "\n"
  	      );
  	    }
  	  }
  	}
  
  	/*  */
  
  	function createFunction (code, errors) {
  	  try {
  	    return new Function(code)
  	  } catch (err) {
  	    errors.push({ err: err, code: code });
  	    return noop
  	  }
  	}
  
  	function createCompileToFunctionFn (compile) {
  	  var cache = Object.create(null);
  
  	  return function compileToFunctions (
  	    template,
  	    options,
  	    vm
  	  ) {
  	    options = extend({}, options);
  	    var warn$$1 = options.warn || warn;
  	    delete options.warn;
  
  	    /* istanbul ignore if */
  	    if (false) {
  	      // 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 (false) {
  	      if (compiled.errors && compiled.errors.length) {
  	        warn$$1(
  	          "Error compiling template:\n\n" + template + "\n\n" +
  	          compiled.errors.map(function (e) { return ("- " + e); }).join('\n') + '\n',
  	          vm
  	        );
  	      }
  	      if (compiled.tips && compiled.tips.length) {
  	        compiled.tips.forEach(function (msg) { return tip(msg, vm); });
  	      }
  	    }
  
  	    // turn code into functions
  	    var res = {};
  	    var fnGenErrors = [];
  	    res.render = createFunction(compiled.render, fnGenErrors);
  	    res.staticRenderFns = compiled.staticRenderFns.map(function (code) {
  	      return createFunction(code, fnGenErrors)
  	    });
  
  	    // check function generation errors.
  	    // this should only happen if there is a bug in the compiler itself.
  	    // mostly for codegen development use
  	    /* istanbul ignore if */
  	    if (false) {
  	      if ((!compiled.errors || !compiled.errors.length) && fnGenErrors.length) {
  	        warn$$1(
  	          "Failed to generate render function:\n\n" +
  	          fnGenErrors.map(function (ref) {
  	            var err = ref.err;
  	            var code = ref.code;
  
  	            return ((err.toString()) + " in\n\n" + code + "\n");
  	        }).join('\n'),
  	          vm
  	        );
  	      }
  	    }
  
  	    return (cache[key] = res)
  	  }
  	}
  
  	/*  */
  
  	function createCompilerCreator (baseCompile) {
  	  return function createCompiler (baseOptions) {
  	    function compile (
  	      template,
  	      options
  	    ) {
  	      var finalOptions = Object.create(baseOptions);
  	      var errors = [];
  	      var tips = [];
  	      finalOptions.warn = function (msg, tip) {
  	        (tip ? tips : errors).push(msg);
  	      };
  
  	      if (options) {
  	        // merge custom modules
  	        if (options.modules) {
  	          finalOptions.modules =
  	            (baseOptions.modules || []).concat(options.modules);
  	        }
  	        // merge custom directives
  	        if (options.directives) {
  	          finalOptions.directives = extend(
  	            Object.create(baseOptions.directives || null),
  	            options.directives
  	          );
  	        }
  	        // copy other options
  	        for (var key in options) {
  	          if (key !== 'modules' && key !== 'directives') {
  	            finalOptions[key] = options[key];
  	          }
  	        }
  	      }
  
  	      var compiled = baseCompile(template, finalOptions);
  	      if (false) {
  	        errors.push.apply(errors, detectErrors(compiled.ast));
  	      }
  	      compiled.errors = errors;
  	      compiled.tips = tips;
  	      return compiled
  	    }
  
  	    return {
  	      compile: compile,
  	      compileToFunctions: createCompileToFunctionFn(compile)
  	    }
  	  }
  	}
  
  	/*  */
  
  	// `createCompilerCreator` allows creating compilers that use alternative
  	// parser/optimizer/codegen, e.g the SSR optimizing compiler.
  	// Here we just export a default compiler using the default parts.
  	var createCompiler = createCompilerCreator(function baseCompile (
  	  template,
  	  options
  	) {
  	  var ast = parse(template.trim(), options);
  	  if (options.optimize !== false) {
  	    optimize(ast, options);
  	  }
  	  var code = generate(ast, options);
  	  return {
  	    ast: ast,
  	    render: code.render,
  	    staticRenderFns: code.staticRenderFns
  	  }
  	});
  
  	/*  */
  
  	var ref$1 = createCompiler(baseOptions);
  	var 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) {
  	    ("production") !== 'production' && warn(
  	      "Do not mount Vue to <html> or <body> - mount to normal elements instead."
  	    );
  	    return this
  	  }
  
  	  var options = this.$options;
  	  // resolve template/el and convert to render function
  	  if (!options.render) {
  	    var template = options.template;
  	    if (template) {
  	      if (typeof template === 'string') {
  	        if (template.charAt(0) === '#') {
  	          template = idToTemplate(template);
  	          /* istanbul ignore if */
  	          if (false) {
  	            warn(
  	              ("Template element not found or is empty: " + (options.template)),
  	              this
  	            );
  	          }
  	        }
  	      } else if (template.nodeType) {
  	        template = template.innerHTML;
  	      } else {
  	        if (false) {
  	          warn('invalid template option:' + template, this);
  	        }
  	        return this
  	      }
  	    } else if (el) {
  	      template = getOuterHTML(el);
  	    }
  	    if (template) {
  	      /* istanbul ignore if */
  	      if (false) {
  	        mark('compile');
  	      }
  
  	      var ref = compileToFunctions(template, {
  	        shouldDecodeNewlines: shouldDecodeNewlines,
  	        shouldDecodeNewlinesForHref: shouldDecodeNewlinesForHref,
  	        delimiters: options.delimiters,
  	        comments: options.comments
  	      }, this);
  	      var render = ref.render;
  	      var staticRenderFns = ref.staticRenderFns;
  	      options.render = render;
  	      options.staticRenderFns = staticRenderFns;
  
  	      /* istanbul ignore if */
  	      if (false) {
  	        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;
  
  	module.exports = Vue;
  
  	/* WEBPACK VAR INJECTION */}.call(exports, (function() { return this; }()), __webpack_require__(2).setImmediate))
  
  /***/ }
  /******/ ])));