text: /******/ (function(modules) { // webpackBootstrap
  /******/ 	// The module cache
  /******/ 	var installedModules = {};
  
  /******/ 	// The require function
  /******/ 	function __webpack_require__(moduleId) {
  
  /******/ 		// Check if module is in cache
  /******/ 		if(installedModules[moduleId])
  /******/ 			return installedModules[moduleId].exports;
  
  /******/ 		// Create a new module (and put it into the cache)
  /******/ 		var module = installedModules[moduleId] = {
  /******/ 			exports: {},
  /******/ 			id: moduleId,
  /******/ 			loaded: false
  /******/ 		};
  
  /******/ 		// Execute the module function
  /******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
  
  /******/ 		// Flag the module as loaded
  /******/ 		module.loaded = true;
  
  /******/ 		// Return the exports of the module
  /******/ 		return module.exports;
  /******/ 	}
  
  
  /******/ 	// expose the modules object (__webpack_modules__)
  /******/ 	__webpack_require__.m = modules;
  
  /******/ 	// expose the module cache
  /******/ 	__webpack_require__.c = installedModules;
  
  /******/ 	// __webpack_public_path__
  /******/ 	__webpack_require__.p = "";
  
  /******/ 	// Load entry module and return exports
  /******/ 	return __webpack_require__(0);
  /******/ })
  /************************************************************************/
  /******/ ([
  /* 0 */
  /***/ function(module, exports, __webpack_require__) {
  
  	'use strict';
  
  	var _vue = __webpack_require__(1);
  
  	var _vue2 = _interopRequireDefault(_vue);
  
  	var _youtube = __webpack_require__(3);
  
  	var _youtube2 = _interopRequireDefault(_youtube);
  
  	function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  
  	console.log('okkk');
  
  	new _vue2.default({
  		el: '#app',
  		components: {
  			appYoutube: _youtube2.default
  		}
  	});
  
  /***/ },
  /* 1 */
  /***/ function(module, exports, __webpack_require__) {
  
  	/* WEBPACK VAR INJECTION */(function(global, process) {/*!
  	 * Vue.js v1.0.22
  	 * (c) 2016 Evan You
  	 * Released under the MIT License.
  	 */
  	'use strict';
  
  	function set(obj, key, val) {
  	  if (hasOwn(obj, key)) {
  	    obj[key] = val;
  	    return;
  	  }
  	  if (obj._isVue) {
  	    set(obj._data, key, val);
  	    return;
  	  }
  	  var ob = obj.__ob__;
  	  if (!ob) {
  	    obj[key] = val;
  	    return;
  	  }
  	  ob.convert(key, val);
  	  ob.dep.notify();
  	  if (ob.vms) {
  	    var i = ob.vms.length;
  	    while (i--) {
  	      var vm = ob.vms[i];
  	      vm._proxy(key);
  	      vm._digest();
  	    }
  	  }
  	  return val;
  	}
  
  	/**
  	 * Delete a property and trigger change if necessary.
  	 *
  	 * @param {Object} obj
  	 * @param {String} key
  	 */
  
  	function del(obj, key) {
  	  if (!hasOwn(obj, key)) {
  	    return;
  	  }
  	  delete obj[key];
  	  var ob = obj.__ob__;
  	  if (!ob) {
  	    if (obj._isVue) {
  	      delete obj._data[key];
  	      obj._digest();
  	    }
  	    return;
  	  }
  	  ob.dep.notify();
  	  if (ob.vms) {
  	    var i = ob.vms.length;
  	    while (i--) {
  	      var vm = ob.vms[i];
  	      vm._unproxy(key);
  	      vm._digest();
  	    }
  	  }
  	}
  
  	var hasOwnProperty = Object.prototype.hasOwnProperty;
  	/**
  	 * Check whether the object has the property.
  	 *
  	 * @param {Object} obj
  	 * @param {String} key
  	 * @return {Boolean}
  	 */
  
  	function hasOwn(obj, key) {
  	  return hasOwnProperty.call(obj, key);
  	}
  
  	/**
  	 * Check if an expression is a literal value.
  	 *
  	 * @param {String} exp
  	 * @return {Boolean}
  	 */
  
  	var literalValueRE = /^\s?(true|false|-?[\d\.]+|'[^']*'|"[^"]*")\s?$/;
  
  	function isLiteral(exp) {
  	  return literalValueRE.test(exp);
  	}
  
  	/**
  	 * Check if a string starts with $ or _
  	 *
  	 * @param {String} str
  	 * @return {Boolean}
  	 */
  
  	function isReserved(str) {
  	  var c = (str + '').charCodeAt(0);
  	  return c === 0x24 || c === 0x5F;
  	}
  
  	/**
  	 * Guard text output, make sure undefined outputs
  	 * empty string
  	 *
  	 * @param {*} value
  	 * @return {String}
  	 */
  
  	function _toString(value) {
  	  return value == null ? '' : value.toString();
  	}
  
  	/**
  	 * Check and convert possible numeric strings to numbers
  	 * before setting back to data
  	 *
  	 * @param {*} value
  	 * @return {*|Number}
  	 */
  
  	function toNumber(value) {
  	  if (typeof value !== 'string') {
  	    return value;
  	  } else {
  	    var parsed = Number(value);
  	    return isNaN(parsed) ? value : parsed;
  	  }
  	}
  
  	/**
  	 * Convert string boolean literals into real booleans.
  	 *
  	 * @param {*} value
  	 * @return {*|Boolean}
  	 */
  
  	function toBoolean(value) {
  	  return value === 'true' ? true : value === 'false' ? false : value;
  	}
  
  	/**
  	 * Strip quotes from a string
  	 *
  	 * @param {String} str
  	 * @return {String | false}
  	 */
  
  	function stripQuotes(str) {
  	  var a = str.charCodeAt(0);
  	  var b = str.charCodeAt(str.length - 1);
  	  return a === b && (a === 0x22 || a === 0x27) ? str.slice(1, -1) : str;
  	}
  
  	/**
  	 * Camelize a hyphen-delmited string.
  	 *
  	 * @param {String} str
  	 * @return {String}
  	 */
  
  	var camelizeRE = /-(\w)/g;
  
  	function camelize(str) {
  	  return str.replace(camelizeRE, toUpper);
  	}
  
  	function toUpper(_, c) {
  	  return c ? c.toUpperCase() : '';
  	}
  
  	/**
  	 * Hyphenate a camelCase string.
  	 *
  	 * @param {String} str
  	 * @return {String}
  	 */
  
  	var hyphenateRE = /([a-z\d])([A-Z])/g;
  
  	function hyphenate(str) {
  	  return str.replace(hyphenateRE, '$1-$2').toLowerCase();
  	}
  
  	/**
  	 * Converts hyphen/underscore/slash delimitered names into
  	 * camelized classNames.
  	 *
  	 * e.g. my-component => MyComponent
  	 *      some_else    => SomeElse
  	 *      some/comp    => SomeComp
  	 *
  	 * @param {String} str
  	 * @return {String}
  	 */
  
  	var classifyRE = /(?:^|[-_\/])(\w)/g;
  
  	function classify(str) {
  	  return str.replace(classifyRE, toUpper);
  	}
  
  	/**
  	 * Simple bind, faster than native
  	 *
  	 * @param {Function} fn
  	 * @param {Object} ctx
  	 * @return {Function}
  	 */
  
  	function bind(fn, ctx) {
  	  return function (a) {
  	    var l = arguments.length;
  	    return l ? l > 1 ? fn.apply(ctx, arguments) : fn.call(ctx, a) : fn.call(ctx);
  	  };
  	}
  
  	/**
  	 * Convert an Array-like object to a real Array.
  	 *
  	 * @param {Array-like} list
  	 * @param {Number} [start] - start index
  	 * @return {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.
  	 *
  	 * @param {Object} to
  	 * @param {Object} from
  	 */
  
  	function extend(to, from) {
  	  var keys = Object.keys(from);
  	  var i = keys.length;
  	  while (i--) {
  	    to[keys[i]] = from[keys[i]];
  	  }
  	  return to;
  	}
  
  	/**
  	 * Quick object check - this is primarily used to tell
  	 * Objects from primitive values when we know the value
  	 * is a JSON-compliant type.
  	 *
  	 * @param {*} obj
  	 * @return {Boolean}
  	 */
  
  	function isObject(obj) {
  	  return obj !== null && typeof obj === 'object';
  	}
  
  	/**
  	 * Strict object type check. Only returns true
  	 * for plain JavaScript objects.
  	 *
  	 * @param {*} obj
  	 * @return {Boolean}
  	 */
  
  	var toString = Object.prototype.toString;
  	var OBJECT_STRING = '[object Object]';
  
  	function isPlainObject(obj) {
  	  return toString.call(obj) === OBJECT_STRING;
  	}
  
  	/**
  	 * Array type check.
  	 *
  	 * @param {*} obj
  	 * @return {Boolean}
  	 */
  
  	var isArray = Array.isArray;
  
  	/**
  	 * Define a property.
  	 *
  	 * @param {Object} obj
  	 * @param {String} key
  	 * @param {*} val
  	 * @param {Boolean} [enumerable]
  	 */
  
  	function def(obj, key, val, enumerable) {
  	  Object.defineProperty(obj, key, {
  	    value: val,
  	    enumerable: !!enumerable,
  	    writable: true,
  	    configurable: true
  	  });
  	}
  
  	/**
  	 * Debounce a function so it only gets called after the
  	 * input stops arriving after the given wait period.
  	 *
  	 * @param {Function} func
  	 * @param {Number} wait
  	 * @return {Function} - the debounced function
  	 */
  
  	function _debounce(func, wait) {
  	  var timeout, args, context, timestamp, result;
  	  var later = function later() {
  	    var last = Date.now() - timestamp;
  	    if (last < wait && last >= 0) {
  	      timeout = setTimeout(later, wait - last);
  	    } else {
  	      timeout = null;
  	      result = func.apply(context, args);
  	      if (!timeout) context = args = null;
  	    }
  	  };
  	  return function () {
  	    context = this;
  	    args = arguments;
  	    timestamp = Date.now();
  	    if (!timeout) {
  	      timeout = setTimeout(later, wait);
  	    }
  	    return result;
  	  };
  	}
  
  	/**
  	 * Manual indexOf because it's slightly faster than
  	 * native.
  	 *
  	 * @param {Array} arr
  	 * @param {*} obj
  	 */
  
  	function indexOf(arr, obj) {
  	  var i = arr.length;
  	  while (i--) {
  	    if (arr[i] === obj) return i;
  	  }
  	  return -1;
  	}
  
  	/**
  	 * Make a cancellable version of an async callback.
  	 *
  	 * @param {Function} fn
  	 * @return {Function}
  	 */
  
  	function cancellable(fn) {
  	  var cb = function cb() {
  	    if (!cb.cancelled) {
  	      return fn.apply(this, arguments);
  	    }
  	  };
  	  cb.cancel = function () {
  	    cb.cancelled = true;
  	  };
  	  return cb;
  	}
  
  	/**
  	 * Check if two values are loosely equal - that is,
  	 * if they are plain objects, do they have the same shape?
  	 *
  	 * @param {*} a
  	 * @param {*} b
  	 * @return {Boolean}
  	 */
  
  	function looseEqual(a, b) {
  	  /* eslint-disable eqeqeq */
  	  return a == b || (isObject(a) && isObject(b) ? JSON.stringify(a) === JSON.stringify(b) : false);
  	  /* eslint-enable eqeqeq */
  	}
  
  	var hasProto = ('__proto__' in {});
  
  	// Browser environment sniffing
  	var inBrowser = typeof window !== 'undefined' && Object.prototype.toString.call(window) !== '[object Object]';
  
  	// detect devtools
  	var devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__;
  
  	// UA sniffing for working around browser-specific quirks
  	var UA = inBrowser && window.navigator.userAgent.toLowerCase();
  	var isIE9 = UA && UA.indexOf('msie 9.0') > 0;
  	var isAndroid = UA && UA.indexOf('android') > 0;
  	var isIos = UA && /(iphone|ipad|ipod|ios)/i.test(UA);
  	var isWechat = UA && UA.indexOf('micromessenger') > 0;
  
  	var transitionProp = undefined;
  	var transitionEndEvent = undefined;
  	var animationProp = undefined;
  	var animationEndEvent = undefined;
  
  	// Transition property/event sniffing
  	if (inBrowser && !isIE9) {
  	  var isWebkitTrans = window.ontransitionend === undefined && window.onwebkittransitionend !== undefined;
  	  var isWebkitAnim = window.onanimationend === undefined && window.onwebkitanimationend !== undefined;
  	  transitionProp = isWebkitTrans ? 'WebkitTransition' : 'transition';
  	  transitionEndEvent = isWebkitTrans ? 'webkitTransitionEnd' : 'transitionend';
  	  animationProp = isWebkitAnim ? 'WebkitAnimation' : 'animation';
  	  animationEndEvent = isWebkitAnim ? 'webkitAnimationEnd' : 'animationend';
  	}
  
  	/**
  	 * Defer a task to execute it asynchronously. Ideally this
  	 * should be executed as a microtask, so we leverage
  	 * MutationObserver if it's available, and fallback to
  	 * setTimeout(0).
  	 *
  	 * @param {Function} cb
  	 * @param {Object} ctx
  	 */
  
  	var nextTick = (function () {
  	  var callbacks = [];
  	  var pending = false;
  	  var timerFunc;
  	  function nextTickHandler() {
  	    pending = false;
  	    var copies = callbacks.slice(0);
  	    callbacks = [];
  	    for (var i = 0; i < copies.length; i++) {
  	      copies[i]();
  	    }
  	  }
  
  	  /* istanbul ignore if */
  	  if (typeof MutationObserver !== 'undefined' && !(isWechat && isIos)) {
  	    var counter = 1;
  	    var observer = new MutationObserver(nextTickHandler);
  	    var textNode = document.createTextNode(counter);
  	    observer.observe(textNode, {
  	      characterData: true
  	    });
  	    timerFunc = function () {
  	      counter = (counter + 1) % 2;
  	      textNode.data = counter;
  	    };
  	  } else {
  	    // webpack attempts to inject a shim for setImmediate
  	    // if it is used as a global, so we have to work around that to
  	    // avoid bundling unnecessary code.
  	    var context = inBrowser ? window : typeof global !== 'undefined' ? global : {};
  	    timerFunc = context.setImmediate || setTimeout;
  	  }
  	  return function (cb, ctx) {
  	    var func = ctx ? function () {
  	      cb.call(ctx);
  	    } : cb;
  	    callbacks.push(func);
  	    if (pending) return;
  	    pending = true;
  	    timerFunc(nextTickHandler, 0);
  	  };
  	})();
  
  	var _Set = undefined;
  	/* istanbul ignore if */
  	if (typeof Set !== 'undefined' && Set.toString().match(/native code/)) {
  	  // use native Set when available.
  	  _Set = Set;
  	} else {
  	  // a non-standard Set polyfill that only works with primitive keys.
  	  _Set = function () {
  	    this.set = Object.create(null);
  	  };
  	  _Set.prototype.has = function (key) {
  	    return this.set[key] !== undefined;
  	  };
  	  _Set.prototype.add = function (key) {
  	    this.set[key] = 1;
  	  };
  	  _Set.prototype.clear = function () {
  	    this.set = Object.create(null);
  	  };
  	}
  
  	function Cache(limit) {
  	  this.size = 0;
  	  this.limit = limit;
  	  this.head = this.tail = undefined;
  	  this._keymap = Object.create(null);
  	}
  
  	var p = Cache.prototype;
  
  	/**
  	 * Put <value> into the cache associated with <key>.
  	 * Returns the entry which was removed to make room for
  	 * the new entry. Otherwise undefined is returned.
  	 * (i.e. if there was enough room already).
  	 *
  	 * @param {String} key
  	 * @param {*} value
  	 * @return {Entry|undefined}
  	 */
  
  	p.put = function (key, value) {
  	  var removed;
  	  if (this.size === this.limit) {
  	    removed = this.shift();
  	  }
  
  	  var entry = this.get(key, true);
  	  if (!entry) {
  	    entry = {
  	      key: key
  	    };
  	    this._keymap[key] = entry;
  	    if (this.tail) {
  	      this.tail.newer = entry;
  	      entry.older = this.tail;
  	    } else {
  	      this.head = entry;
  	    }
  	    this.tail = entry;
  	    this.size++;
  	  }
  	  entry.value = value;
  
  	  return removed;
  	};
  
  	/**
  	 * Purge the least recently used (oldest) entry from the
  	 * cache. Returns the removed entry or undefined if the
  	 * cache was empty.
  	 */
  
  	p.shift = function () {
  	  var entry = this.head;
  	  if (entry) {
  	    this.head = this.head.newer;
  	    this.head.older = undefined;
  	    entry.newer = entry.older = undefined;
  	    this._keymap[entry.key] = undefined;
  	    this.size--;
  	  }
  	  return entry;
  	};
  
  	/**
  	 * Get and register recent use of <key>. Returns the value
  	 * associated with <key> or undefined if not in cache.
  	 *
  	 * @param {String} key
  	 * @param {Boolean} returnEntry
  	 * @return {Entry|*}
  	 */
  
  	p.get = function (key, returnEntry) {
  	  var entry = this._keymap[key];
  	  if (entry === undefined) return;
  	  if (entry === this.tail) {
  	    return returnEntry ? entry : entry.value;
  	  }
  	  // HEAD--------------TAIL
  	  //   <.older   .newer>
  	  //  <--- add direction --
  	  //   A  B  C  <D>  E
  	  if (entry.newer) {
  	    if (entry === this.head) {
  	      this.head = entry.newer;
  	    }
  	    entry.newer.older = entry.older; // C <-- E.
  	  }
  	  if (entry.older) {
  	    entry.older.newer = entry.newer; // C. --> E
  	  }
  	  entry.newer = undefined; // D --x
  	  entry.older = this.tail; // D. --> E
  	  if (this.tail) {
  	    this.tail.newer = entry; // E. <-- D
  	  }
  	  this.tail = entry;
  	  return returnEntry ? entry : entry.value;
  	};
  
  	var cache$1 = new Cache(1000);
  	var filterTokenRE = /[^\s'"]+|'[^']*'|"[^"]*"/g;
  	var reservedArgRE = /^in$|^-?\d+/;
  
  	/**
  	 * Parser state
  	 */
  
  	var str;
  	var dir;
  	var c;
  	var prev;
  	var i;
  	var l;
  	var lastFilterIndex;
  	var inSingle;
  	var inDouble;
  	var curly;
  	var square;
  	var paren;
  	/**
  	 * Push a filter to the current directive object
  	 */
  
  	function pushFilter() {
  	  var exp = str.slice(lastFilterIndex, i).trim();
  	  var filter;
  	  if (exp) {
  	    filter = {};
  	    var tokens = exp.match(filterTokenRE);
  	    filter.name = tokens[0];
  	    if (tokens.length > 1) {
  	      filter.args = tokens.slice(1).map(processFilterArg);
  	    }
  	  }
  	  if (filter) {
  	    (dir.filters = dir.filters || []).push(filter);
  	  }
  	  lastFilterIndex = i + 1;
  	}
  
  	/**
  	 * Check if an argument is dynamic and strip quotes.
  	 *
  	 * @param {String} arg
  	 * @return {Object}
  	 */
  
  	function processFilterArg(arg) {
  	  if (reservedArgRE.test(arg)) {
  	    return {
  	      value: toNumber(arg),
  	      dynamic: false
  	    };
  	  } else {
  	    var stripped = stripQuotes(arg);
  	    var dynamic = stripped === arg;
  	    return {
  	      value: dynamic ? arg : stripped,
  	      dynamic: dynamic
  	    };
  	  }
  	}
  
  	/**
  	 * Parse a directive value and extract the expression
  	 * and its filters into a descriptor.
  	 *
  	 * Example:
  	 *
  	 * "a + 1 | uppercase" will yield:
  	 * {
  	 *   expression: 'a + 1',
  	 *   filters: [
  	 *     { name: 'uppercase', args: null }
  	 *   ]
  	 * }
  	 *
  	 * @param {String} s
  	 * @return {Object}
  	 */
  
  	function parseDirective(s) {
  	  var hit = cache$1.get(s);
  	  if (hit) {
  	    return hit;
  	  }
  
  	  // reset parser state
  	  str = s;
  	  inSingle = inDouble = false;
  	  curly = square = paren = 0;
  	  lastFilterIndex = 0;
  	  dir = {};
  
  	  for (i = 0, l = str.length; i < l; i++) {
  	    prev = c;
  	    c = str.charCodeAt(i);
  	    if (inSingle) {
  	      // check single quote
  	      if (c === 0x27 && prev !== 0x5C) inSingle = !inSingle;
  	    } else if (inDouble) {
  	      // check double quote
  	      if (c === 0x22 && prev !== 0x5C) inDouble = !inDouble;
  	    } else if (c === 0x7C && // pipe
  	    str.charCodeAt(i + 1) !== 0x7C && str.charCodeAt(i - 1) !== 0x7C) {
  	      if (dir.expression == null) {
  	        // first filter, end of expression
  	        lastFilterIndex = i + 1;
  	        dir.expression = str.slice(0, i).trim();
  	      } else {
  	        // already has filter
  	        pushFilter();
  	      }
  	    } else {
  	      switch (c) {
  	        case 0x22:
  	          inDouble = true;break; // "
  	        case 0x27:
  	          inSingle = 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 (dir.expression == null) {
  	    dir.expression = str.slice(0, i).trim();
  	  } else if (lastFilterIndex !== 0) {
  	    pushFilter();
  	  }
  
  	  cache$1.put(s, dir);
  	  return dir;
  	}
  
  	var directive = Object.freeze({
  	  parseDirective: parseDirective
  	});
  
  	var regexEscapeRE = /[-.*+?^${}()|[\]\/\\]/g;
  	var cache = undefined;
  	var tagRE = undefined;
  	var htmlRE = undefined;
  	/**
  	 * Escape a string so it can be used in a RegExp
  	 * constructor.
  	 *
  	 * @param {String} str
  	 */
  
  	function escapeRegex(str) {
  	  return str.replace(regexEscapeRE, '\\$&');
  	}
  
  	function compileRegex() {
  	  var open = escapeRegex(config.delimiters[0]);
  	  var close = escapeRegex(config.delimiters[1]);
  	  var unsafeOpen = escapeRegex(config.unsafeDelimiters[0]);
  	  var unsafeClose = escapeRegex(config.unsafeDelimiters[1]);
  	  tagRE = new RegExp(unsafeOpen + '((?:.|\\n)+?)' + unsafeClose + '|' + open + '((?:.|\\n)+?)' + close, 'g');
  	  htmlRE = new RegExp('^' + unsafeOpen + '.*' + unsafeClose + '$');
  	  // reset cache
  	  cache = new Cache(1000);
  	}
  
  	/**
  	 * Parse a template text string into an array of tokens.
  	 *
  	 * @param {String} text
  	 * @return {Array<Object> | null}
  	 *               - {String} type
  	 *               - {String} value
  	 *               - {Boolean} [html]
  	 *               - {Boolean} [oneTime]
  	 */
  
  	function parseText(text) {
  	  if (!cache) {
  	    compileRegex();
  	  }
  	  var hit = cache.get(text);
  	  if (hit) {
  	    return hit;
  	  }
  	  if (!tagRE.test(text)) {
  	    return null;
  	  }
  	  var tokens = [];
  	  var lastIndex = tagRE.lastIndex = 0;
  	  var match, index, html, value, first, oneTime;
  	  /* eslint-disable no-cond-assign */
  	  while (match = tagRE.exec(text)) {
  	    /* eslint-enable no-cond-assign */
  	    index = match.index;
  	    // push text token
  	    if (index > lastIndex) {
  	      tokens.push({
  	        value: text.slice(lastIndex, index)
  	      });
  	    }
  	    // tag token
  	    html = htmlRE.test(match[0]);
  	    value = html ? match[1] : match[2];
  	    first = value.charCodeAt(0);
  	    oneTime = first === 42; // *
  	    value = oneTime ? value.slice(1) : value;
  	    tokens.push({
  	      tag: true,
  	      value: value.trim(),
  	      html: html,
  	      oneTime: oneTime
  	    });
  	    lastIndex = index + match[0].length;
  	  }
  	  if (lastIndex < text.length) {
  	    tokens.push({
  	      value: text.slice(lastIndex)
  	    });
  	  }
  	  cache.put(text, tokens);
  	  return tokens;
  	}
  
  	/**
  	 * Format a list of tokens into an expression.
  	 * e.g. tokens parsed from 'a {{b}} c' can be serialized
  	 * into one single expression as '"a " + b + " c"'.
  	 *
  	 * @param {Array} tokens
  	 * @param {Vue} [vm]
  	 * @return {String}
  	 */
  
  	function tokensToExp(tokens, vm) {
  	  if (tokens.length > 1) {
  	    return tokens.map(function (token) {
  	      return formatToken(token, vm);
  	    }).join('+');
  	  } else {
  	    return formatToken(tokens[0], vm, true);
  	  }
  	}
  
  	/**
  	 * Format a single token.
  	 *
  	 * @param {Object} token
  	 * @param {Vue} [vm]
  	 * @param {Boolean} [single]
  	 * @return {String}
  	 */
  
  	function formatToken(token, vm, single) {
  	  return token.tag ? token.oneTime && vm ? '"' + vm.$eval(token.value) + '"' : inlineFilters(token.value, single) : '"' + token.value + '"';
  	}
  
  	/**
  	 * For an attribute with multiple interpolation tags,
  	 * e.g. attr="some-{{thing | filter}}", in order to combine
  	 * the whole thing into a single watchable expression, we
  	 * have to inline those filters. This function does exactly
  	 * that. This is a bit hacky but it avoids heavy changes
  	 * to directive parser and watcher mechanism.
  	 *
  	 * @param {String} exp
  	 * @param {Boolean} single
  	 * @return {String}
  	 */
  
  	var filterRE = /[^|]\|[^|]/;
  	function inlineFilters(exp, single) {
  	  if (!filterRE.test(exp)) {
  	    return single ? exp : '(' + exp + ')';
  	  } else {
  	    var dir = parseDirective(exp);
  	    if (!dir.filters) {
  	      return '(' + exp + ')';
  	    } else {
  	      return 'this._applyFilters(' + dir.expression + // value
  	      ',null,' + // oldValue (null for read)
  	      JSON.stringify(dir.filters) + // filter descriptors
  	      ',false)'; // write?
  	    }
  	  }
  	}
  
  	var text = Object.freeze({
  	  compileRegex: compileRegex,
  	  parseText: parseText,
  	  tokensToExp: tokensToExp
  	});
  
  	var delimiters = ['{{', '}}'];
  	var unsafeDelimiters = ['{{{', '}}}'];
  
  	var config = Object.defineProperties({
  
  	  /**
  	   * Whether to print debug messages.
  	   * Also enables stack trace for warnings.
  	   *
  	   * @type {Boolean}
  	   */
  
  	  debug: false,
  
  	  /**
  	   * Whether to suppress warnings.
  	   *
  	   * @type {Boolean}
  	   */
  
  	  silent: false,
  
  	  /**
  	   * Whether to use async rendering.
  	   */
  
  	  async: true,
  
  	  /**
  	   * Whether to warn against errors caught when evaluating
  	   * expressions.
  	   */
  
  	  warnExpressionErrors: true,
  
  	  /**
  	   * Whether to allow devtools inspection.
  	   * Disabled by default in production builds.
  	   */
  
  	  devtools: process.env.NODE_ENV !== 'production',
  
  	  /**
  	   * Internal flag to indicate the delimiters have been
  	   * changed.
  	   *
  	   * @type {Boolean}
  	   */
  
  	  _delimitersChanged: true,
  
  	  /**
  	   * List of asset types that a component can own.
  	   *
  	   * @type {Array}
  	   */
  
  	  _assetTypes: ['component', 'directive', 'elementDirective', 'filter', 'transition', 'partial'],
  
  	  /**
  	   * prop binding modes
  	   */
  
  	  _propBindingModes: {
  	    ONE_WAY: 0,
  	    TWO_WAY: 1,
  	    ONE_TIME: 2
  	  },
  
  	  /**
  	   * Max circular updates allowed in a batcher flush cycle.
  	   */
  
  	  _maxUpdateCount: 100
  
  	}, {
  	  delimiters: { /**
  	                 * Interpolation delimiters. Changing these would trigger
  	                 * the text parser to re-compile the regular expressions.
  	                 *
  	                 * @type {Array<String>}
  	                 */
  
  	    get: function get() {
  	      return delimiters;
  	    },
  	    set: function set(val) {
  	      delimiters = val;
  	      compileRegex();
  	    },
  	    configurable: true,
  	    enumerable: true
  	  },
  	  unsafeDelimiters: {
  	    get: function get() {
  	      return unsafeDelimiters;
  	    },
  	    set: function set(val) {
  	      unsafeDelimiters = val;
  	      compileRegex();
  	    },
  	    configurable: true,
  	    enumerable: true
  	  }
  	});
  
  	var warn = undefined;
  	var formatComponentName = undefined;
  
  	if (process.env.NODE_ENV !== 'production') {
  	  (function () {
  	    var hasConsole = typeof console !== 'undefined';
  
  	    warn = function (msg, vm) {
  	      if (hasConsole && !config.silent) {
  	        console.error('[Vue warn]: ' + msg + (vm ? formatComponentName(vm) : ''));
  	      }
  	    };
  
  	    formatComponentName = function (vm) {
  	      var name = vm._isVue ? vm.$options.name : vm.name;
  	      return name ? ' (found in component: <' + hyphenate(name) + '>)' : '';
  	    };
  	  })();
  	}
  
  	/**
  	 * Append with transition.
  	 *
  	 * @param {Element} el
  	 * @param {Element} target
  	 * @param {Vue} vm
  	 * @param {Function} [cb]
  	 */
  
  	function appendWithTransition(el, target, vm, cb) {
  	  applyTransition(el, 1, function () {
  	    target.appendChild(el);
  	  }, vm, cb);
  	}
  
  	/**
  	 * InsertBefore with transition.
  	 *
  	 * @param {Element} el
  	 * @param {Element} target
  	 * @param {Vue} vm
  	 * @param {Function} [cb]
  	 */
  
  	function beforeWithTransition(el, target, vm, cb) {
  	  applyTransition(el, 1, function () {
  	    before(el, target);
  	  }, vm, cb);
  	}
  
  	/**
  	 * Remove with transition.
  	 *
  	 * @param {Element} el
  	 * @param {Vue} vm
  	 * @param {Function} [cb]
  	 */
  
  	function removeWithTransition(el, vm, cb) {
  	  applyTransition(el, -1, function () {
  	    remove(el);
  	  }, vm, cb);
  	}
  
  	/**
  	 * Apply transitions with an operation callback.
  	 *
  	 * @param {Element} el
  	 * @param {Number} direction
  	 *                  1: enter
  	 *                 -1: leave
  	 * @param {Function} op - the actual DOM operation
  	 * @param {Vue} vm
  	 * @param {Function} [cb]
  	 */
  
  	function applyTransition(el, direction, op, vm, cb) {
  	  var transition = el.__v_trans;
  	  if (!transition ||
  	  // skip if there are no js hooks and CSS transition is
  	  // not supported
  	  !transition.hooks && !transitionEndEvent ||
  	  // skip transitions for initial compile
  	  !vm._isCompiled ||
  	  // if the vm is being manipulated by a parent directive
  	  // during the parent's compilation phase, skip the
  	  // animation.
  	  vm.$parent && !vm.$parent._isCompiled) {
  	    op();
  	    if (cb) cb();
  	    return;
  	  }
  	  var action = direction > 0 ? 'enter' : 'leave';
  	  transition[action](op, cb);
  	}
  
  	var transition = Object.freeze({
  	  appendWithTransition: appendWithTransition,
  	  beforeWithTransition: beforeWithTransition,
  	  removeWithTransition: removeWithTransition,
  	  applyTransition: applyTransition
  	});
  
  	/**
  	 * Query an element selector if it's not an element already.
  	 *
  	 * @param {String|Element} el
  	 * @return {Element}
  	 */
  
  	function query(el) {
  	  if (typeof el === 'string') {
  	    var selector = el;
  	    el = document.querySelector(el);
  	    if (!el) {
  	      process.env.NODE_ENV !== 'production' && warn('Cannot find element: ' + selector);
  	    }
  	  }
  	  return el;
  	}
  
  	/**
  	 * Check if a node is in the document.
  	 * Note: document.documentElement.contains should work here
  	 * but always returns false for comment nodes in phantomjs,
  	 * making unit tests difficult. This is fixed by doing the
  	 * contains() check on the node's parentNode instead of
  	 * the node itself.
  	 *
  	 * @param {Node} node
  	 * @return {Boolean}
  	 */
  
  	function inDoc(node) {
  	  var doc = document.documentElement;
  	  var parent = node && node.parentNode;
  	  return doc === node || doc === parent || !!(parent && parent.nodeType === 1 && doc.contains(parent));
  	}
  
  	/**
  	 * Get and remove an attribute from a node.
  	 *
  	 * @param {Node} node
  	 * @param {String} _attr
  	 */
  
  	function getAttr(node, _attr) {
  	  var val = node.getAttribute(_attr);
  	  if (val !== null) {
  	    node.removeAttribute(_attr);
  	  }
  	  return val;
  	}
  
  	/**
  	 * Get an attribute with colon or v-bind: prefix.
  	 *
  	 * @param {Node} node
  	 * @param {String} name
  	 * @return {String|null}
  	 */
  
  	function getBindAttr(node, name) {
  	  var val = getAttr(node, ':' + name);
  	  if (val === null) {
  	    val = getAttr(node, 'v-bind:' + name);
  	  }
  	  return val;
  	}
  
  	/**
  	 * Check the presence of a bind attribute.
  	 *
  	 * @param {Node} node
  	 * @param {String} name
  	 * @return {Boolean}
  	 */
  
  	function hasBindAttr(node, name) {
  	  return node.hasAttribute(name) || node.hasAttribute(':' + name) || node.hasAttribute('v-bind:' + name);
  	}
  
  	/**
  	 * Insert el before target
  	 *
  	 * @param {Element} el
  	 * @param {Element} target
  	 */
  
  	function before(el, target) {
  	  target.parentNode.insertBefore(el, target);
  	}
  
  	/**
  	 * Insert el after target
  	 *
  	 * @param {Element} el
  	 * @param {Element} target
  	 */
  
  	function after(el, target) {
  	  if (target.nextSibling) {
  	    before(el, target.nextSibling);
  	  } else {
  	    target.parentNode.appendChild(el);
  	  }
  	}
  
  	/**
  	 * Remove el from DOM
  	 *
  	 * @param {Element} el
  	 */
  
  	function remove(el) {
  	  el.parentNode.removeChild(el);
  	}
  
  	/**
  	 * Prepend el to target
  	 *
  	 * @param {Element} el
  	 * @param {Element} target
  	 */
  
  	function prepend(el, target) {
  	  if (target.firstChild) {
  	    before(el, target.firstChild);
  	  } else {
  	    target.appendChild(el);
  	  }
  	}
  
  	/**
  	 * Replace target with el
  	 *
  	 * @param {Element} target
  	 * @param {Element} el
  	 */
  
  	function replace(target, el) {
  	  var parent = target.parentNode;
  	  if (parent) {
  	    parent.replaceChild(el, target);
  	  }
  	}
  
  	/**
  	 * Add event listener shorthand.
  	 *
  	 * @param {Element} el
  	 * @param {String} event
  	 * @param {Function} cb
  	 * @param {Boolean} [useCapture]
  	 */
  
  	function on(el, event, cb, useCapture) {
  	  el.addEventListener(event, cb, useCapture);
  	}
  
  	/**
  	 * Remove event listener shorthand.
  	 *
  	 * @param {Element} el
  	 * @param {String} event
  	 * @param {Function} cb
  	 */
  
  	function off(el, event, cb) {
  	  el.removeEventListener(event, cb);
  	}
  
  	/**
  	 * For IE9 compat: when both class and :class are present
  	 * getAttribute('class') returns wrong value...
  	 *
  	 * @param {Element} el
  	 * @return {String}
  	 */
  
  	function getClass(el) {
  	  var classname = el.className;
  	  if (typeof classname === 'object') {
  	    classname = classname.baseVal || '';
  	  }
  	  return classname;
  	}
  
  	/**
  	 * In IE9, setAttribute('class') will result in empty class
  	 * if the element also has the :class attribute; However in
  	 * PhantomJS, setting `className` does not work on SVG elements...
  	 * So we have to do a conditional check here.
  	 *
  	 * @param {Element} el
  	 * @param {String} cls
  	 */
  
  	function setClass(el, cls) {
  	  /* istanbul ignore if */
  	  if (isIE9 && !/svg$/.test(el.namespaceURI)) {
  	    el.className = cls;
  	  } else {
  	    el.setAttribute('class', cls);
  	  }
  	}
  
  	/**
  	 * Add class with compatibility for IE & SVG
  	 *
  	 * @param {Element} el
  	 * @param {String} cls
  	 */
  
  	function addClass(el, cls) {
  	  if (el.classList) {
  	    el.classList.add(cls);
  	  } else {
  	    var cur = ' ' + getClass(el) + ' ';
  	    if (cur.indexOf(' ' + cls + ' ') < 0) {
  	      setClass(el, (cur + cls).trim());
  	    }
  	  }
  	}
  
  	/**
  	 * Remove class with compatibility for IE & SVG
  	 *
  	 * @param {Element} el
  	 * @param {String} cls
  	 */
  
  	function removeClass(el, cls) {
  	  if (el.classList) {
  	    el.classList.remove(cls);
  	  } else {
  	    var cur = ' ' + getClass(el) + ' ';
  	    var tar = ' ' + cls + ' ';
  	    while (cur.indexOf(tar) >= 0) {
  	      cur = cur.replace(tar, ' ');
  	    }
  	    setClass(el, cur.trim());
  	  }
  	  if (!el.className) {
  	    el.removeAttribute('class');
  	  }
  	}
  
  	/**
  	 * Extract raw content inside an element into a temporary
  	 * container div
  	 *
  	 * @param {Element} el
  	 * @param {Boolean} asFragment
  	 * @return {Element|DocumentFragment}
  	 */
  
  	function extractContent(el, asFragment) {
  	  var child;
  	  var rawContent;
  	  /* istanbul ignore if */
  	  if (isTemplate(el) && isFragment(el.content)) {
  	    el = el.content;
  	  }
  	  if (el.hasChildNodes()) {
  	    trimNode(el);
  	    rawContent = asFragment ? document.createDocumentFragment() : document.createElement('div');
  	    /* eslint-disable no-cond-assign */
  	    while (child = el.firstChild) {
  	      /* eslint-enable no-cond-assign */
  	      rawContent.appendChild(child);
  	    }
  	  }
  	  return rawContent;
  	}
  
  	/**
  	 * Trim possible empty head/tail text and comment
  	 * nodes inside a parent.
  	 *
  	 * @param {Node} node
  	 */
  
  	function trimNode(node) {
  	  var child;
  	  /* eslint-disable no-sequences */
  	  while ((child = node.firstChild, isTrimmable(child))) {
  	    node.removeChild(child);
  	  }
  	  while ((child = node.lastChild, isTrimmable(child))) {
  	    node.removeChild(child);
  	  }
  	  /* eslint-enable no-sequences */
  	}
  
  	function isTrimmable(node) {
  	  return node && (node.nodeType === 3 && !node.data.trim() || node.nodeType === 8);
  	}
  
  	/**
  	 * Check if an element is a template tag.
  	 * Note if the template appears inside an SVG its tagName
  	 * will be in lowercase.
  	 *
  	 * @param {Element} el
  	 */
  
  	function isTemplate(el) {
  	  return el.tagName && el.tagName.toLowerCase() === 'template';
  	}
  
  	/**
  	 * Create an "anchor" for performing dom insertion/removals.
  	 * This is used in a number of scenarios:
  	 * - fragment instance
  	 * - v-html
  	 * - v-if
  	 * - v-for
  	 * - component
  	 *
  	 * @param {String} content
  	 * @param {Boolean} persist - IE trashes empty textNodes on
  	 *                            cloneNode(true), so in certain
  	 *                            cases the anchor needs to be
  	 *                            non-empty to be persisted in
  	 *                            templates.
  	 * @return {Comment|Text}
  	 */
  
  	function createAnchor(content, persist) {
  	  var anchor = config.debug ? document.createComment(content) : document.createTextNode(persist ? ' ' : '');
  	  anchor.__v_anchor = true;
  	  return anchor;
  	}
  
  	/**
  	 * Find a component ref attribute that starts with $.
  	 *
  	 * @param {Element} node
  	 * @return {String|undefined}
  	 */
  
  	var refRE = /^v-ref:/;
  
  	function findRef(node) {
  	  if (node.hasAttributes()) {
  	    var attrs = node.attributes;
  	    for (var i = 0, l = attrs.length; i < l; i++) {
  	      var name = attrs[i].name;
  	      if (refRE.test(name)) {
  	        return camelize(name.replace(refRE, ''));
  	      }
  	    }
  	  }
  	}
  
  	/**
  	 * Map a function to a range of nodes .
  	 *
  	 * @param {Node} node
  	 * @param {Node} end
  	 * @param {Function} op
  	 */
  
  	function mapNodeRange(node, end, op) {
  	  var next;
  	  while (node !== end) {
  	    next = node.nextSibling;
  	    op(node);
  	    node = next;
  	  }
  	  op(end);
  	}
  
  	/**
  	 * Remove a range of nodes with transition, store
  	 * the nodes in a fragment with correct ordering,
  	 * and call callback when done.
  	 *
  	 * @param {Node} start
  	 * @param {Node} end
  	 * @param {Vue} vm
  	 * @param {DocumentFragment} frag
  	 * @param {Function} cb
  	 */
  
  	function removeNodeRange(start, end, vm, frag, cb) {
  	  var done = false;
  	  var removed = 0;
  	  var nodes = [];
  	  mapNodeRange(start, end, function (node) {
  	    if (node === end) done = true;
  	    nodes.push(node);
  	    removeWithTransition(node, vm, onRemoved);
  	  });
  	  function onRemoved() {
  	    removed++;
  	    if (done && removed >= nodes.length) {
  	      for (var i = 0; i < nodes.length; i++) {
  	        frag.appendChild(nodes[i]);
  	      }
  	      cb && cb();
  	    }
  	  }
  	}
  
  	/**
  	 * Check if a node is a DocumentFragment.
  	 *
  	 * @param {Node} node
  	 * @return {Boolean}
  	 */
  
  	function isFragment(node) {
  	  return node && node.nodeType === 11;
  	}
  
  	/**
  	 * Get outerHTML of elements, taking care
  	 * of SVG elements in IE as well.
  	 *
  	 * @param {Element} el
  	 * @return {String}
  	 */
  
  	function getOuterHTML(el) {
  	  if (el.outerHTML) {
  	    return el.outerHTML;
  	  } else {
  	    var container = document.createElement('div');
  	    container.appendChild(el.cloneNode(true));
  	    return container.innerHTML;
  	  }
  	}
  
  	var commonTagRE = /^(div|p|span|img|a|b|i|br|ul|ol|li|h1|h2|h3|h4|h5|h6|code|pre|table|th|td|tr|form|label|input|select|option|nav|article|section|header|footer)$/i;
  	var reservedTagRE = /^(slot|partial|component)$/i;
  
  	var isUnknownElement = undefined;
  	if (process.env.NODE_ENV !== 'production') {
  	  isUnknownElement = function (el, tag) {
  	    if (tag.indexOf('-') > -1) {
  	      // http://stackoverflow.com/a/28210364/1070244
  	      return el.constructor === window.HTMLUnknownElement || el.constructor === window.HTMLElement;
  	    } else {
  	      return (/HTMLUnknownElement/.test(el.toString()) &&
  	        // Chrome returns unknown for several HTML5 elements.
  	        // https://code.google.com/p/chromium/issues/detail?id=540526
  	        !/^(data|time|rtc|rb)$/.test(tag)
  	      );
  	    }
  	  };
  	}
  
  	/**
  	 * Check if an element is a component, if yes return its
  	 * component id.
  	 *
  	 * @param {Element} el
  	 * @param {Object} options
  	 * @return {Object|undefined}
  	 */
  
  	function checkComponentAttr(el, options) {
  	  var tag = el.tagName.toLowerCase();
  	  var hasAttrs = el.hasAttributes();
  	  if (!commonTagRE.test(tag) && !reservedTagRE.test(tag)) {
  	    if (resolveAsset(options, 'components', tag)) {
  	      return { id: tag };
  	    } else {
  	      var is = hasAttrs && getIsBinding(el, options);
  	      if (is) {
  	        return is;
  	      } else if (process.env.NODE_ENV !== 'production') {
  	        var expectedTag = options._componentNameMap && options._componentNameMap[tag];
  	        if (expectedTag) {
  	          warn('Unknown custom element: <' + tag + '> - ' + 'did you mean <' + expectedTag + '>? ' + 'HTML is case-insensitive, remember to use kebab-case in templates.');
  	        } else if (isUnknownElement(el, tag)) {
  	          warn('Unknown custom element: <' + tag + '> - did you ' + 'register the component correctly? For recursive components, ' + 'make sure to provide the "name" option.');
  	        }
  	      }
  	    }
  	  } else if (hasAttrs) {
  	    return getIsBinding(el, options);
  	  }
  	}
  
  	/**
  	 * Get "is" binding from an element.
  	 *
  	 * @param {Element} el
  	 * @param {Object} options
  	 * @return {Object|undefined}
  	 */
  
  	function getIsBinding(el, options) {
  	  // dynamic syntax
  	  var exp = el.getAttribute('is');
  	  if (exp != null) {
  	    if (resolveAsset(options, 'components', exp)) {
  	      el.removeAttribute('is');
  	      return { id: exp };
  	    }
  	  } else {
  	    exp = getBindAttr(el, 'is');
  	    if (exp != null) {
  	      return { id: exp, dynamic: true };
  	    }
  	  }
  	}
  
  	/**
  	 * Option overwriting strategies are functions that handle
  	 * how to merge a parent option value and a child option
  	 * value into the final value.
  	 *
  	 * All strategy functions follow the same signature:
  	 *
  	 * @param {*} parentVal
  	 * @param {*} childVal
  	 * @param {Vue} [vm]
  	 */
  
  	var strats = config.optionMergeStrategies = Object.create(null);
  
  	/**
  	 * Helper that recursively merges two data objects together.
  	 */
  
  	function mergeData(to, from) {
  	  var key, toVal, fromVal;
  	  for (key in from) {
  	    toVal = to[key];
  	    fromVal = from[key];
  	    if (!hasOwn(to, key)) {
  	      set(to, key, fromVal);
  	    } else if (isObject(toVal) && isObject(fromVal)) {
  	      mergeData(toVal, fromVal);
  	    }
  	  }
  	  return to;
  	}
  
  	/**
  	 * Data
  	 */
  
  	strats.data = function (parentVal, childVal, vm) {
  	  if (!vm) {
  	    // in a Vue.extend merge, both should be functions
  	    if (!childVal) {
  	      return parentVal;
  	    }
  	    if (typeof childVal !== 'function') {
  	      process.env.NODE_ENV !== 'production' && warn('The "data" option should be a function ' + 'that returns a per-instance value in component ' + 'definitions.', vm);
  	      return parentVal;
  	    }
  	    if (!parentVal) {
  	      return childVal;
  	    }
  	    // when parentVal & childVal are both present,
  	    // we need to return a function that returns the
  	    // merged result of both functions... no need to
  	    // check if parentVal is a function here because
  	    // it has to be a function to pass previous merges.
  	    return function mergedDataFn() {
  	      return mergeData(childVal.call(this), parentVal.call(this));
  	    };
  	  } else if (parentVal || childVal) {
  	    return function mergedInstanceDataFn() {
  	      // instance merge
  	      var instanceData = typeof childVal === 'function' ? childVal.call(vm) : childVal;
  	      var defaultData = typeof parentVal === 'function' ? parentVal.call(vm) : undefined;
  	      if (instanceData) {
  	        return mergeData(instanceData, defaultData);
  	      } else {
  	        return defaultData;
  	      }
  	    };
  	  }
  	};
  
  	/**
  	 * El
  	 */
  
  	strats.el = function (parentVal, childVal, vm) {
  	  if (!vm && childVal && typeof childVal !== 'function') {
  	    process.env.NODE_ENV !== 'production' && warn('The "el" option should be a function ' + 'that returns a per-instance value in component ' + 'definitions.', vm);
  	    return;
  	  }
  	  var ret = childVal || parentVal;
  	  // invoke the element factory if this is instance merge
  	  return vm && typeof ret === 'function' ? ret.call(vm) : ret;
  	};
  
  	/**
  	 * Hooks and param attributes are merged as arrays.
  	 */
  
  	strats.init = strats.created = strats.ready = strats.attached = strats.detached = strats.beforeCompile = strats.compiled = strats.beforeDestroy = strats.destroyed = strats.activate = function (parentVal, childVal) {
  	  return childVal ? parentVal ? parentVal.concat(childVal) : isArray(childVal) ? childVal : [childVal] : parentVal;
  	};
  
  	/**
  	 * Assets
  	 *
  	 * When a vm is present (instance creation), we need to do
  	 * a three-way merge between constructor options, instance
  	 * options and parent options.
  	 */
  
  	function mergeAssets(parentVal, childVal) {
  	  var res = Object.create(parentVal || null);
  	  return childVal ? extend(res, guardArrayAssets(childVal)) : res;
  	}
  
  	config._assetTypes.forEach(function (type) {
  	  strats[type + 's'] = mergeAssets;
  	});
  
  	/**
  	 * Events & Watchers.
  	 *
  	 * Events & watchers hashes should not overwrite one
  	 * another, so we merge them as arrays.
  	 */
  
  	strats.watch = strats.events = function (parentVal, childVal) {
  	  if (!childVal) return parentVal;
  	  if (!parentVal) return childVal;
  	  var ret = {};
  	  extend(ret, parentVal);
  	  for (var key in childVal) {
  	    var parent = ret[key];
  	    var child = childVal[key];
  	    if (parent && !isArray(parent)) {
  	      parent = [parent];
  	    }
  	    ret[key] = parent ? parent.concat(child) : [child];
  	  }
  	  return ret;
  	};
  
  	/**
  	 * Other object hashes.
  	 */
  
  	strats.props = strats.methods = strats.computed = function (parentVal, childVal) {
  	  if (!childVal) return parentVal;
  	  if (!parentVal) return childVal;
  	  var ret = Object.create(null);
  	  extend(ret, parentVal);
  	  extend(ret, childVal);
  	  return ret;
  	};
  
  	/**
  	 * Default strategy.
  	 */
  
  	var defaultStrat = function defaultStrat(parentVal, childVal) {
  	  return childVal === undefined ? parentVal : childVal;
  	};
  
  	/**
  	 * Make sure component options get converted to actual
  	 * constructors.
  	 *
  	 * @param {Object} options
  	 */
  
  	function guardComponents(options) {
  	  if (options.components) {
  	    var components = options.components = guardArrayAssets(options.components);
  	    var ids = Object.keys(components);
  	    var def;
  	    if (process.env.NODE_ENV !== 'production') {
  	      var map = options._componentNameMap = {};
  	    }
  	    for (var i = 0, l = ids.length; i < l; i++) {
  	      var key = ids[i];
  	      if (commonTagRE.test(key) || reservedTagRE.test(key)) {
  	        process.env.NODE_ENV !== 'production' && warn('Do not use built-in or reserved HTML elements as component ' + 'id: ' + key);
  	        continue;
  	      }
  	      // record a all lowercase <-> kebab-case mapping for
  	      // possible custom element case error warning
  	      if (process.env.NODE_ENV !== 'production') {
  	        map[key.replace(/-/g, '').toLowerCase()] = hyphenate(key);
  	      }
  	      def = components[key];
  	      if (isPlainObject(def)) {
  	        components[key] = Vue.extend(def);
  	      }
  	    }
  	  }
  	}
  
  	/**
  	 * Ensure all props option syntax are normalized into the
  	 * Object-based format.
  	 *
  	 * @param {Object} options
  	 */
  
  	function guardProps(options) {
  	  var props = options.props;
  	  var i, val;
  	  if (isArray(props)) {
  	    options.props = {};
  	    i = props.length;
  	    while (i--) {
  	      val = props[i];
  	      if (typeof val === 'string') {
  	        options.props[val] = null;
  	      } else if (val.name) {
  	        options.props[val.name] = val;
  	      }
  	    }
  	  } else if (isPlainObject(props)) {
  	    var keys = Object.keys(props);
  	    i = keys.length;
  	    while (i--) {
  	      val = props[keys[i]];
  	      if (typeof val === 'function') {
  	        props[keys[i]] = { type: val };
  	      }
  	    }
  	  }
  	}
  
  	/**
  	 * Guard an Array-format assets option and converted it
  	 * into the key-value Object format.
  	 *
  	 * @param {Object|Array} assets
  	 * @return {Object}
  	 */
  
  	function guardArrayAssets(assets) {
  	  if (isArray(assets)) {
  	    var res = {};
  	    var i = assets.length;
  	    var asset;
  	    while (i--) {
  	      asset = assets[i];
  	      var id = typeof asset === 'function' ? asset.options && asset.options.name || asset.id : asset.name || asset.id;
  	      if (!id) {
  	        process.env.NODE_ENV !== 'production' && warn('Array-syntax assets must provide a "name" or "id" field.');
  	      } else {
  	        res[id] = asset;
  	      }
  	    }
  	    return res;
  	  }
  	  return assets;
  	}
  
  	/**
  	 * Merge two option objects into a new one.
  	 * Core utility used in both instantiation and inheritance.
  	 *
  	 * @param {Object} parent
  	 * @param {Object} child
  	 * @param {Vue} [vm] - if vm is present, indicates this is
  	 *                     an instantiation merge.
  	 */
  
  	function mergeOptions(parent, child, vm) {
  	  guardComponents(child);
  	  guardProps(child);
  	  if (process.env.NODE_ENV !== 'production') {
  	    if (child.propsData && !vm) {
  	      warn('propsData can only be used as an instantiation option.');
  	    }
  	  }
  	  var options = {};
  	  var key;
  	  if (child['extends']) {
  	    parent = typeof child['extends'] === 'function' ? mergeOptions(parent, child['extends'].options, vm) : mergeOptions(parent, child['extends'], vm);
  	  }
  	  if (child.mixins) {
  	    for (var i = 0, l = child.mixins.length; i < l; i++) {
  	      parent = mergeOptions(parent, child.mixins[i], vm);
  	    }
  	  }
  	  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.
  	 *
  	 * @param {Object} options
  	 * @param {String} type
  	 * @param {String} id
  	 * @param {Boolean} warnMissing
  	 * @return {Object|Function}
  	 */
  
  	function resolveAsset(options, type, id, warnMissing) {
  	  /* istanbul ignore if */
  	  if (typeof id !== 'string') {
  	    return;
  	  }
  	  var assets = options[type];
  	  var camelizedId;
  	  var res = assets[id] ||
  	  // camelCase ID
  	  assets[camelizedId = camelize(id)] ||
  	  // Pascal Case ID
  	  assets[camelizedId.charAt(0).toUpperCase() + camelizedId.slice(1)];
  	  if (process.env.NODE_ENV !== 'production' && warnMissing && !res) {
  	    warn('Failed to resolve ' + type.slice(0, -1) + ': ' + id, options);
  	  }
  	  return res;
  	}
  
  	var uid$1 = 0;
  
  	/**
  	 * A dep is an observable that can have multiple
  	 * directives subscribing to it.
  	 *
  	 * @constructor
  	 */
  	function Dep() {
  	  this.id = uid$1++;
  	  this.subs = [];
  	}
  
  	// 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;
  
  	/**
  	 * Add a directive subscriber.
  	 *
  	 * @param {Directive} sub
  	 */
  
  	Dep.prototype.addSub = function (sub) {
  	  this.subs.push(sub);
  	};
  
  	/**
  	 * Remove a directive subscriber.
  	 *
  	 * @param {Directive} sub
  	 */
  
  	Dep.prototype.removeSub = function (sub) {
  	  this.subs.$remove(sub);
  	};
  
  	/**
  	 * Add self as a dependency to the target watcher.
  	 */
  
  	Dep.prototype.depend = function () {
  	  Dep.target.addDep(this);
  	};
  
  	/**
  	 * Notify all subscribers of a new value.
  	 */
  
  	Dep.prototype.notify = function () {
  	  // stablize the subscriber list first
  	  var subs = toArray(this.subs);
  	  for (var i = 0, l = subs.length; i < l; i++) {
  	    subs[i].update();
  	  }
  	};
  
  	var arrayProto = Array.prototype;
  	var arrayMethods = Object.create(arrayProto)
  
  	/**
  	 * Intercept mutating methods and emit events
  	 */
  
  	;['push', 'pop', 'shift', 'unshift', 'splice', 'sort', 'reverse'].forEach(function (method) {
  	  // cache original method
  	  var original = arrayProto[method];
  	  def(arrayMethods, method, function mutator() {
  	    // avoid leaking arguments:
  	    // http://jsperf.com/closure-with-arguments
  	    var i = arguments.length;
  	    var args = new Array(i);
  	    while (i--) {
  	      args[i] = arguments[i];
  	    }
  	    var result = original.apply(this, args);
  	    var ob = this.__ob__;
  	    var inserted;
  	    switch (method) {
  	      case 'push':
  	        inserted = args;
  	        break;
  	      case 'unshift':
  	        inserted = args;
  	        break;
  	      case 'splice':
  	        inserted = args.slice(2);
  	        break;
  	    }
  	    if (inserted) ob.observeArray(inserted);
  	    // notify change
  	    ob.dep.notify();
  	    return result;
  	  });
  	});
  
  	/**
  	 * Swap the element at the given index with a new value
  	 * and emits corresponding event.
  	 *
  	 * @param {Number} index
  	 * @param {*} val
  	 * @return {*} - replaced element
  	 */
  
  	def(arrayProto, '$set', function $set(index, val) {
  	  if (index >= this.length) {
  	    this.length = Number(index) + 1;
  	  }
  	  return this.splice(index, 1, val)[0];
  	});
  
  	/**
  	 * Convenience method to remove the element at given index or target element reference.
  	 *
  	 * @param {*} item
  	 */
  
  	def(arrayProto, '$remove', function $remove(item) {
  	  /* istanbul ignore if */
  	  if (!this.length) return;
  	  var index = indexOf(this, item);
  	  if (index > -1) {
  	    return this.splice(index, 1);
  	  }
  	});
  
  	var arrayKeys = Object.getOwnPropertyNames(arrayMethods);
  
  	/**
  	 * By default, when a reactive property is set, the new value is
  	 * also converted to become reactive. However in certain cases, e.g.
  	 * v-for scope alias and props, we don't want to force conversion
  	 * because the value may be a nested value under a frozen data structure.
  	 *
  	 * So whenever we want to set a reactive property without forcing
  	 * conversion on the new value, we wrap that call inside this function.
  	 */
  
  	var shouldConvert = true;
  
  	function withoutConversion(fn) {
  	  shouldConvert = false;
  	  fn();
  	  shouldConvert = true;
  	}
  
  	/**
  	 * Observer class that are attached to each observed
  	 * object. Once attached, the observer converts target
  	 * object's property keys into getter/setters that
  	 * collect dependencies and dispatches updates.
  	 *
  	 * @param {Array|Object} value
  	 * @constructor
  	 */
  
  	function Observer(value) {
  	  this.value = value;
  	  this.dep = new Dep();
  	  def(value, '__ob__', this);
  	  if (isArray(value)) {
  	    var augment = hasProto ? protoAugment : copyAugment;
  	    augment(value, arrayMethods, arrayKeys);
  	    this.observeArray(value);
  	  } else {
  	    this.walk(value);
  	  }
  	}
  
  	// Instance methods
  
  	/**
  	 * Walk through each property and convert them into
  	 * getter/setters. This method should only be called when
  	 * value type is Object.
  	 *
  	 * @param {Object} obj
  	 */
  
  	Observer.prototype.walk = function (obj) {
  	  var keys = Object.keys(obj);
  	  for (var i = 0, l = keys.length; i < l; i++) {
  	    this.convert(keys[i], obj[keys[i]]);
  	  }
  	};
  
  	/**
  	 * Observe a list of Array items.
  	 *
  	 * @param {Array} items
  	 */
  
  	Observer.prototype.observeArray = function (items) {
  	  for (var i = 0, l = items.length; i < l; i++) {
  	    observe(items[i]);
  	  }
  	};
  
  	/**
  	 * Convert a property into getter/setter so we can emit
  	 * the events when the property is accessed/changed.
  	 *
  	 * @param {String} key
  	 * @param {*} val
  	 */
  
  	Observer.prototype.convert = function (key, val) {
  	  defineReactive(this.value, key, val);
  	};
  
  	/**
  	 * Add an owner vm, so that when $set/$delete mutations
  	 * happen we can notify owner vms to proxy the keys and
  	 * digest the watchers. This is only called when the object
  	 * is observed as an instance's root $data.
  	 *
  	 * @param {Vue} vm
  	 */
  
  	Observer.prototype.addVm = function (vm) {
  	  (this.vms || (this.vms = [])).push(vm);
  	};
  
  	/**
  	 * Remove an owner vm. This is called when the object is
  	 * swapped out as an instance's $data object.
  	 *
  	 * @param {Vue} vm
  	 */
  
  	Observer.prototype.removeVm = function (vm) {
  	  this.vms.$remove(vm);
  	};
  
  	// helpers
  
  	/**
  	 * Augment an target Object or Array by intercepting
  	 * the prototype chain using __proto__
  	 *
  	 * @param {Object|Array} target
  	 * @param {Object} src
  	 */
  
  	function protoAugment(target, src) {
  	  /* eslint-disable no-proto */
  	  target.__proto__ = src;
  	  /* eslint-enable no-proto */
  	}
  
  	/**
  	 * Augment an target Object or Array by defining
  	 * hidden properties.
  	 *
  	 * @param {Object|Array} target
  	 * @param {Object} proto
  	 */
  
  	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.
  	 *
  	 * @param {*} value
  	 * @param {Vue} [vm]
  	 * @return {Observer|undefined}
  	 * @static
  	 */
  
  	function observe(value, vm) {
  	  if (!value || typeof value !== 'object') {
  	    return;
  	  }
  	  var ob;
  	  if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {
  	    ob = value.__ob__;
  	  } else if (shouldConvert && (isArray(value) || isPlainObject(value)) && Object.isExtensible(value) && !value._isVue) {
  	    ob = new Observer(value);
  	  }
  	  if (ob && vm) {
  	    ob.addVm(vm);
  	  }
  	  return ob;
  	}
  
  	/**
  	 * Define a reactive property on an Object.
  	 *
  	 * @param {Object} obj
  	 * @param {String} key
  	 * @param {*} val
  	 */
  
  	function defineReactive(obj, key, val) {
  	  var dep = new Dep();
  
  	  var property = Object.getOwnPropertyDescriptor(obj, key);
  	  if (property && property.configurable === false) {
  	    return;
  	  }
  
  	  // cater for pre-defined getter/setters
  	  var getter = property && property.get;
  	  var setter = property && property.set;
  
  	  var childOb = observe(val);
  	  Object.defineProperty(obj, key, {
  	    enumerable: true,
  	    configurable: true,
  	    get: function reactiveGetter() {
  	      var value = getter ? getter.call(obj) : val;
  	      if (Dep.target) {
  	        dep.depend();
  	        if (childOb) {
  	          childOb.dep.depend();
  	        }
  	        if (isArray(value)) {
  	          for (var e, i = 0, l = value.length; i < l; i++) {
  	            e = value[i];
  	            e && e.__ob__ && e.__ob__.dep.depend();
  	          }
  	        }
  	      }
  	      return value;
  	    },
  	    set: function reactiveSetter(newVal) {
  	      var value = getter ? getter.call(obj) : val;
  	      if (newVal === value) {
  	        return;
  	      }
  	      if (setter) {
  	        setter.call(obj, newVal);
  	      } else {
  	        val = newVal;
  	      }
  	      childOb = observe(newVal);
  	      dep.notify();
  	    }
  	  });
  	}
  
  
  
  	var util = Object.freeze({
  		defineReactive: defineReactive,
  		set: set,
  		del: del,
  		hasOwn: hasOwn,
  		isLiteral: isLiteral,
  		isReserved: isReserved,
  		_toString: _toString,
  		toNumber: toNumber,
  		toBoolean: toBoolean,
  		stripQuotes: stripQuotes,
  		camelize: camelize,
  		hyphenate: hyphenate,
  		classify: classify,
  		bind: bind,
  		toArray: toArray,
  		extend: extend,
  		isObject: isObject,
  		isPlainObject: isPlainObject,
  		def: def,
  		debounce: _debounce,
  		indexOf: indexOf,
  		cancellable: cancellable,
  		looseEqual: looseEqual,
  		isArray: isArray,
  		hasProto: hasProto,
  		inBrowser: inBrowser,
  		devtools: devtools,
  		isIE9: isIE9,
  		isAndroid: isAndroid,
  		isIos: isIos,
  		isWechat: isWechat,
  		get transitionProp () { return transitionProp; },
  		get transitionEndEvent () { return transitionEndEvent; },
  		get animationProp () { return animationProp; },
  		get animationEndEvent () { return animationEndEvent; },
  		nextTick: nextTick,
  		get _Set () { return _Set; },
  		query: query,
  		inDoc: inDoc,
  		getAttr: getAttr,
  		getBindAttr: getBindAttr,
  		hasBindAttr: hasBindAttr,
  		before: before,
  		after: after,
  		remove: remove,
  		prepend: prepend,
  		replace: replace,
  		on: on,
  		off: off,
  		setClass: setClass,
  		addClass: addClass,
  		removeClass: removeClass,
  		extractContent: extractContent,
  		trimNode: trimNode,
  		isTemplate: isTemplate,
  		createAnchor: createAnchor,
  		findRef: findRef,
  		mapNodeRange: mapNodeRange,
  		removeNodeRange: removeNodeRange,
  		isFragment: isFragment,
  		getOuterHTML: getOuterHTML,
  		mergeOptions: mergeOptions,
  		resolveAsset: resolveAsset,
  		checkComponentAttr: checkComponentAttr,
  		commonTagRE: commonTagRE,
  		reservedTagRE: reservedTagRE,
  		get warn () { return warn; }
  	});
  
  	var uid = 0;
  
  	function initMixin (Vue) {
  	  /**
  	   * The main init sequence. This is called for every
  	   * instance, including ones that are created from extended
  	   * constructors.
  	   *
  	   * @param {Object} options - this options object should be
  	   *                           the result of merging class
  	   *                           options and the options passed
  	   *                           in to the constructor.
  	   */
  
  	  Vue.prototype._init = function (options) {
  	    options = options || {};
  
  	    this.$el = null;
  	    this.$parent = options.parent;
  	    this.$root = this.$parent ? this.$parent.$root : this;
  	    this.$children = [];
  	    this.$refs = {}; // child vm references
  	    this.$els = {}; // element references
  	    this._watchers = []; // all watchers as an array
  	    this._directives = []; // all directives
  
  	    // a uid
  	    this._uid = uid++;
  
  	    // a flag to avoid this being observed
  	    this._isVue = true;
  
  	    // events bookkeeping
  	    this._events = {}; // registered callbacks
  	    this._eventsCount = {}; // for $broadcast optimization
  
  	    // fragment instance properties
  	    this._isFragment = false;
  	    this._fragment = // @type {DocumentFragment}
  	    this._fragmentStart = // @type {Text|Comment}
  	    this._fragmentEnd = null; // @type {Text|Comment}
  
  	    // lifecycle state
  	    this._isCompiled = this._isDestroyed = this._isReady = this._isAttached = this._isBeingDestroyed = this._vForRemoving = false;
  	    this._unlinkFn = null;
  
  	    // context:
  	    // if this is a transcluded component, context
  	    // will be the common parent vm of this instance
  	    // and its host.
  	    this._context = options._context || this.$parent;
  
  	    // scope:
  	    // if this is inside an inline v-for, the scope
  	    // will be the intermediate scope created for this
  	    // repeat fragment. this is used for linking props
  	    // and container directives.
  	    this._scope = options._scope;
  
  	    // fragment:
  	    // if this instance is compiled inside a Fragment, it
  	    // needs to reigster itself as a child of that fragment
  	    // for attach/detach to work properly.
  	    this._frag = options._frag;
  	    if (this._frag) {
  	      this._frag.children.push(this);
  	    }
  
  	    // push self into parent / transclusion host
  	    if (this.$parent) {
  	      this.$parent.$children.push(this);
  	    }
  
  	    // merge options.
  	    options = this.$options = mergeOptions(this.constructor.options, options, this);
  
  	    // set ref
  	    this._updateRef();
  
  	    // initialize data as empty object.
  	    // it will be filled up in _initData().
  	    this._data = {};
  
  	    // call init hook
  	    this._callHook('init');
  
  	    // initialize data observation and scope inheritance.
  	    this._initState();
  
  	    // setup event system and option events.
  	    this._initEvents();
  
  	    // call created hook
  	    this._callHook('created');
  
  	    // if `el` option is passed, start compilation.
  	    if (options.el) {
  	      this.$mount(options.el);
  	    }
  	  };
  	}
  
  	var pathCache = new Cache(1000);
  
  	// actions
  	var APPEND = 0;
  	var PUSH = 1;
  	var INC_SUB_PATH_DEPTH = 2;
  	var PUSH_SUB_PATH = 3;
  
  	// states
  	var BEFORE_PATH = 0;
  	var IN_PATH = 1;
  	var BEFORE_IDENT = 2;
  	var IN_IDENT = 3;
  	var IN_SUB_PATH = 4;
  	var IN_SINGLE_QUOTE = 5;
  	var IN_DOUBLE_QUOTE = 6;
  	var AFTER_PATH = 7;
  	var ERROR = 8;
  
  	var pathStateMachine = [];
  
  	pathStateMachine[BEFORE_PATH] = {
  	  'ws': [BEFORE_PATH],
  	  'ident': [IN_IDENT, APPEND],
  	  '[': [IN_SUB_PATH],
  	  'eof': [AFTER_PATH]
  	};
  
  	pathStateMachine[IN_PATH] = {
  	  'ws': [IN_PATH],
  	  '.': [BEFORE_IDENT],
  	  '[': [IN_SUB_PATH],
  	  'eof': [AFTER_PATH]
  	};
  
  	pathStateMachine[BEFORE_IDENT] = {
  	  'ws': [BEFORE_IDENT],
  	  'ident': [IN_IDENT, APPEND]
  	};
  
  	pathStateMachine[IN_IDENT] = {
  	  'ident': [IN_IDENT, APPEND],
  	  '0': [IN_IDENT, APPEND],
  	  'number': [IN_IDENT, APPEND],
  	  'ws': [IN_PATH, PUSH],
  	  '.': [BEFORE_IDENT, PUSH],
  	  '[': [IN_SUB_PATH, PUSH],
  	  'eof': [AFTER_PATH, PUSH]
  	};
  
  	pathStateMachine[IN_SUB_PATH] = {
  	  "'": [IN_SINGLE_QUOTE, APPEND],
  	  '"': [IN_DOUBLE_QUOTE, APPEND],
  	  '[': [IN_SUB_PATH, INC_SUB_PATH_DEPTH],
  	  ']': [IN_PATH, PUSH_SUB_PATH],
  	  'eof': ERROR,
  	  'else': [IN_SUB_PATH, APPEND]
  	};
  
  	pathStateMachine[IN_SINGLE_QUOTE] = {
  	  "'": [IN_SUB_PATH, APPEND],
  	  'eof': ERROR,
  	  'else': [IN_SINGLE_QUOTE, APPEND]
  	};
  
  	pathStateMachine[IN_DOUBLE_QUOTE] = {
  	  '"': [IN_SUB_PATH, APPEND],
  	  'eof': ERROR,
  	  'else': [IN_DOUBLE_QUOTE, APPEND]
  	};
  
  	/**
  	 * Determine the type of a character in a keypath.
  	 *
  	 * @param {Char} ch
  	 * @return {String} type
  	 */
  
  	function getPathCharType(ch) {
  	  if (ch === undefined) {
  	    return 'eof';
  	  }
  
  	  var code = ch.charCodeAt(0);
  
  	  switch (code) {
  	    case 0x5B: // [
  	    case 0x5D: // ]
  	    case 0x2E: // .
  	    case 0x22: // "
  	    case 0x27: // '
  	    case 0x30:
  	      // 0
  	      return ch;
  
  	    case 0x5F: // _
  	    case 0x24:
  	      // $
  	      return 'ident';
  
  	    case 0x20: // Space
  	    case 0x09: // Tab
  	    case 0x0A: // Newline
  	    case 0x0D: // Return
  	    case 0xA0: // No-break space
  	    case 0xFEFF: // Byte Order Mark
  	    case 0x2028: // Line Separator
  	    case 0x2029:
  	      // Paragraph Separator
  	      return 'ws';
  	  }
  
  	  // a-z, A-Z
  	  if (code >= 0x61 && code <= 0x7A || code >= 0x41 && code <= 0x5A) {
  	    return 'ident';
  	  }
  
  	  // 1-9
  	  if (code >= 0x31 && code <= 0x39) {
  	    return 'number';
  	  }
  
  	  return 'else';
  	}
  
  	/**
  	 * Format a subPath, return its plain form if it is
  	 * a literal string or number. Otherwise prepend the
  	 * dynamic indicator (*).
  	 *
  	 * @param {String} path
  	 * @return {String}
  	 */
  
  	function formatSubPath(path) {
  	  var trimmed = path.trim();
  	  // invalid leading 0
  	  if (path.charAt(0) === '0' && isNaN(path)) {
  	    return false;
  	  }
  	  return isLiteral(trimmed) ? stripQuotes(trimmed) : '*' + trimmed;
  	}
  
  	/**
  	 * Parse a string path into an array of segments
  	 *
  	 * @param {String} path
  	 * @return {Array|undefined}
  	 */
  
  	function parse(path) {
  	  var keys = [];
  	  var index = -1;
  	  var mode = BEFORE_PATH;
  	  var subPathDepth = 0;
  	  var c, newChar, key, type, transition, action, typeMap;
  
  	  var actions = [];
  
  	  actions[PUSH] = function () {
  	    if (key !== undefined) {
  	      keys.push(key);
  	      key = undefined;
  	    }
  	  };
  
  	  actions[APPEND] = function () {
  	    if (key === undefined) {
  	      key = newChar;
  	    } else {
  	      key += newChar;
  	    }
  	  };
  
  	  actions[INC_SUB_PATH_DEPTH] = function () {
  	    actions[APPEND]();
  	    subPathDepth++;
  	  };
  
  	  actions[PUSH_SUB_PATH] = function () {
  	    if (subPathDepth > 0) {
  	      subPathDepth--;
  	      mode = IN_SUB_PATH;
  	      actions[APPEND]();
  	    } else {
  	      subPathDepth = 0;
  	      key = formatSubPath(key);
  	      if (key === false) {
  	        return false;
  	      } else {
  	        actions[PUSH]();
  	      }
  	    }
  	  };
  
  	  function maybeUnescapeQuote() {
  	    var nextChar = path[index + 1];
  	    if (mode === IN_SINGLE_QUOTE && nextChar === "'" || mode === IN_DOUBLE_QUOTE && nextChar === '"') {
  	      index++;
  	      newChar = '\\' + nextChar;
  	      actions[APPEND]();
  	      return true;
  	    }
  	  }
  
  	  while (mode != null) {
  	    index++;
  	    c = path[index];
  
  	    if (c === '\\' && maybeUnescapeQuote()) {
  	      continue;
  	    }
  
  	    type = getPathCharType(c);
  	    typeMap = pathStateMachine[mode];
  	    transition = typeMap[type] || typeMap['else'] || ERROR;
  
  	    if (transition === ERROR) {
  	      return; // parse error
  	    }
  
  	    mode = transition[0];
  	    action = actions[transition[1]];
  	    if (action) {
  	      newChar = transition[2];
  	      newChar = newChar === undefined ? c : newChar;
  	      if (action() === false) {
  	        return;
  	      }
  	    }
  
  	    if (mode === AFTER_PATH) {
  	      keys.raw = path;
  	      return keys;
  	    }
  	  }
  	}
  
  	/**
  	 * External parse that check for a cache hit first
  	 *
  	 * @param {String} path
  	 * @return {Array|undefined}
  	 */
  
  	function parsePath(path) {
  	  var hit = pathCache.get(path);
  	  if (!hit) {
  	    hit = parse(path);
  	    if (hit) {
  	      pathCache.put(path, hit);
  	    }
  	  }
  	  return hit;
  	}
  
  	/**
  	 * Get from an object from a path string
  	 *
  	 * @param {Object} obj
  	 * @param {String} path
  	 */
  
  	function getPath(obj, path) {
  	  return parseExpression(path).get(obj);
  	}
  
  	/**
  	 * Warn against setting non-existent root path on a vm.
  	 */
  
  	var warnNonExistent;
  	if (process.env.NODE_ENV !== 'production') {
  	  warnNonExistent = function (path, vm) {
  	    warn('You are setting a non-existent path "' + path.raw + '" ' + 'on a vm instance. Consider pre-initializing the property ' + 'with the "data" option for more reliable reactivity ' + 'and better performance.', vm);
  	  };
  	}
  
  	/**
  	 * Set on an object from a path
  	 *
  	 * @param {Object} obj
  	 * @param {String | Array} path
  	 * @param {*} val
  	 */
  
  	function setPath(obj, path, val) {
  	  var original = obj;
  	  if (typeof path === 'string') {
  	    path = parse(path);
  	  }
  	  if (!path || !isObject(obj)) {
  	    return false;
  	  }
  	  var last, key;
  	  for (var i = 0, l = path.length; i < l; i++) {
  	    last = obj;
  	    key = path[i];
  	    if (key.charAt(0) === '*') {
  	      key = parseExpression(key.slice(1)).get.call(original, original);
  	    }
  	    if (i < l - 1) {
  	      obj = obj[key];
  	      if (!isObject(obj)) {
  	        obj = {};
  	        if (process.env.NODE_ENV !== 'production' && last._isVue) {
  	          warnNonExistent(path, last);
  	        }
  	        set(last, key, obj);
  	      }
  	    } else {
  	      if (isArray(obj)) {
  	        obj.$set(key, val);
  	      } else if (key in obj) {
  	        obj[key] = val;
  	      } else {
  	        if (process.env.NODE_ENV !== 'production' && obj._isVue) {
  	          warnNonExistent(path, obj);
  	        }
  	        set(obj, key, val);
  	      }
  	    }
  	  }
  	  return true;
  	}
  
  	var path = Object.freeze({
  	  parsePath: parsePath,
  	  getPath: getPath,
  	  setPath: setPath
  	});
  
  	var expressionCache = new Cache(1000);
  
  	var allowedKeywords = 'Math,Date,this,true,false,null,undefined,Infinity,NaN,' + 'isNaN,isFinite,decodeURI,decodeURIComponent,encodeURI,' + 'encodeURIComponent,parseInt,parseFloat';
  	var allowedKeywordsRE = new RegExp('^(' + allowedKeywords.replace(/,/g, '\\b|') + '\\b)');
  
  	// keywords that don't make sense inside expressions
  	var improperKeywords = 'break,case,class,catch,const,continue,debugger,default,' + 'delete,do,else,export,extends,finally,for,function,if,' + 'import,in,instanceof,let,return,super,switch,throw,try,' + 'var,while,with,yield,enum,await,implements,package,' + 'protected,static,interface,private,public';
  	var improperKeywordsRE = new RegExp('^(' + improperKeywords.replace(/,/g, '\\b|') + '\\b)');
  
  	var wsRE = /\s/g;
  	var newlineRE = /\n/g;
  	var saveRE = /[\{,]\s*[\w\$_]+\s*:|('(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`)|new |typeof |void /g;
  	var restoreRE = /"(\d+)"/g;
  	var pathTestRE = /^[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['.*?'\]|\[".*?"\]|\[\d+\]|\[[A-Za-z_$][\w$]*\])*$/;
  	var identRE = /[^\w$\.](?:[A-Za-z_$][\w$]*)/g;
  	var booleanLiteralRE = /^(?:true|false)$/;
  
  	/**
  	 * Save / Rewrite / Restore
  	 *
  	 * When rewriting paths found in an expression, it is
  	 * possible for the same letter sequences to be found in
  	 * strings and Object literal property keys. Therefore we
  	 * remove and store these parts in a temporary array, and
  	 * restore them after the path rewrite.
  	 */
  
  	var saved = [];
  
  	/**
  	 * Save replacer
  	 *
  	 * The save regex can match two possible cases:
  	 * 1. An opening object literal
  	 * 2. A string
  	 * If matched as a plain string, we need to escape its
  	 * newlines, since the string needs to be preserved when
  	 * generating the function body.
  	 *
  	 * @param {String} str
  	 * @param {String} isString - str if matched as a string
  	 * @return {String} - placeholder with index
  	 */
  
  	function save(str, isString) {
  	  var i = saved.length;
  	  saved[i] = isString ? str.replace(newlineRE, '\\n') : str;
  	  return '"' + i + '"';
  	}
  
  	/**
  	 * Path rewrite replacer
  	 *
  	 * @param {String} raw
  	 * @return {String}
  	 */
  
  	function rewrite(raw) {
  	  var c = raw.charAt(0);
  	  var path = raw.slice(1);
  	  if (allowedKeywordsRE.test(path)) {
  	    return raw;
  	  } else {
  	    path = path.indexOf('"') > -1 ? path.replace(restoreRE, restore) : path;
  	    return c + 'scope.' + path;
  	  }
  	}
  
  	/**
  	 * Restore replacer
  	 *
  	 * @param {String} str
  	 * @param {String} i - matched save index
  	 * @return {String}
  	 */
  
  	function restore(str, i) {
  	  return saved[i];
  	}
  
  	/**
  	 * Rewrite an expression, prefixing all path accessors with
  	 * `scope.` and generate getter/setter functions.
  	 *
  	 * @param {String} exp
  	 * @return {Function}
  	 */
  
  	function compileGetter(exp) {
  	  if (improperKeywordsRE.test(exp)) {
  	    process.env.NODE_ENV !== 'production' && warn('Avoid using reserved keywords in expression: ' + exp);
  	  }
  	  // reset state
  	  saved.length = 0;
  	  // save strings and object literal keys
  	  var body = exp.replace(saveRE, save).replace(wsRE, '');
  	  // rewrite all paths
  	  // pad 1 space here becaue the regex matches 1 extra char
  	  body = (' ' + body).replace(identRE, rewrite).replace(restoreRE, restore);
  	  return makeGetterFn(body);
  	}
  
  	/**
  	 * Build a getter function. Requires eval.
  	 *
  	 * We isolate the try/catch so it doesn't affect the
  	 * optimization of the parse function when it is not called.
  	 *
  	 * @param {String} body
  	 * @return {Function|undefined}
  	 */
  
  	function makeGetterFn(body) {
  	  try {
  	    /* eslint-disable no-new-func */
  	    return new Function('scope', 'return ' + body + ';');
  	    /* eslint-enable no-new-func */
  	  } catch (e) {
  	    process.env.NODE_ENV !== 'production' && warn('Invalid expression. ' + 'Generated function body: ' + body);
  	  }
  	}
  
  	/**
  	 * Compile a setter function for the expression.
  	 *
  	 * @param {String} exp
  	 * @return {Function|undefined}
  	 */
  
  	function compileSetter(exp) {
  	  var path = parsePath(exp);
  	  if (path) {
  	    return function (scope, val) {
  	      setPath(scope, path, val);
  	    };
  	  } else {
  	    process.env.NODE_ENV !== 'production' && warn('Invalid setter expression: ' + exp);
  	  }
  	}
  
  	/**
  	 * Parse an expression into re-written getter/setters.
  	 *
  	 * @param {String} exp
  	 * @param {Boolean} needSet
  	 * @return {Function}
  	 */
  
  	function parseExpression(exp, needSet) {
  	  exp = exp.trim();
  	  // try cache
  	  var hit = expressionCache.get(exp);
  	  if (hit) {
  	    if (needSet && !hit.set) {
  	      hit.set = compileSetter(hit.exp);
  	    }
  	    return hit;
  	  }
  	  var res = { exp: exp };
  	  res.get = isSimplePath(exp) && exp.indexOf('[') < 0
  	  // optimized super simple getter
  	  ? makeGetterFn('scope.' + exp)
  	  // dynamic getter
  	  : compileGetter(exp);
  	  if (needSet) {
  	    res.set = compileSetter(exp);
  	  }
  	  expressionCache.put(exp, res);
  	  return res;
  	}
  
  	/**
  	 * Check if an expression is a simple path.
  	 *
  	 * @param {String} exp
  	 * @return {Boolean}
  	 */
  
  	function isSimplePath(exp) {
  	  return pathTestRE.test(exp) &&
  	  // don't treat true/false as paths
  	  !booleanLiteralRE.test(exp) &&
  	  // Math constants e.g. Math.PI, Math.E etc.
  	  exp.slice(0, 5) !== 'Math.';
  	}
  
  	var expression = Object.freeze({
  	  parseExpression: parseExpression,
  	  isSimplePath: isSimplePath
  	});
  
  	// we have two separate queues: one for directive updates
  	// and one for user watcher registered via $watch().
  	// we want to guarantee directive updates to be called
  	// before user watchers so that when user watchers are
  	// triggered, the DOM would have already been in updated
  	// state.
  
  	var queue = [];
  	var userQueue = [];
  	var has = {};
  	var circular = {};
  	var waiting = false;
  
  	/**
  	 * Reset the batcher's state.
  	 */
  
  	function resetBatcherState() {
  	  queue.length = 0;
  	  userQueue.length = 0;
  	  has = {};
  	  circular = {};
  	  waiting = false;
  	}
  
  	/**
  	 * Flush both queues and run the watchers.
  	 */
  
  	function flushBatcherQueue() {
  	  runBatcherQueue(queue);
  	  queue.length = 0;
  	  runBatcherQueue(userQueue);
  	  // user watchers triggered more internal watchers
  	  if (queue.length) {
  	    runBatcherQueue(queue);
  	  }
  	  // dev tool hook
  	  /* istanbul ignore if */
  	  if (devtools && config.devtools) {
  	    devtools.emit('flush');
  	  }
  	  resetBatcherState();
  	}
  
  	/**
  	 * Run the watchers in a single queue.
  	 *
  	 * @param {Array} queue
  	 */
  
  	function runBatcherQueue(queue) {
  	  // do not cache length because more watchers might be pushed
  	  // as we run existing watchers
  	  for (var i = 0; i < queue.length; i++) {
  	    var watcher = queue[i];
  	    var id = watcher.id;
  	    has[id] = null;
  	    watcher.run();
  	    // in dev build, check and stop circular updates.
  	    if (process.env.NODE_ENV !== 'production' && has[id] != null) {
  	      circular[id] = (circular[id] || 0) + 1;
  	      if (circular[id] > config._maxUpdateCount) {
  	        warn('You may have an infinite update loop for watcher ' + 'with expression "' + watcher.expression + '"', watcher.vm);
  	        break;
  	      }
  	    }
  	  }
  	}
  
  	/**
  	 * Push a watcher into the watcher queue.
  	 * Jobs with duplicate IDs will be skipped unless it's
  	 * pushed when the queue is being flushed.
  	 *
  	 * @param {Watcher} watcher
  	 *   properties:
  	 *   - {Number} id
  	 *   - {Function} run
  	 */
  
  	function pushWatcher(watcher) {
  	  var id = watcher.id;
  	  if (has[id] == null) {
  	    // push watcher into appropriate queue
  	    var q = watcher.user ? userQueue : queue;
  	    has[id] = q.length;
  	    q.push(watcher);
  	    // queue the flush
  	    if (!waiting) {
  	      waiting = true;
  	      nextTick(flushBatcherQueue);
  	    }
  	  }
  	}
  
  	var uid$2 = 0;
  
  	/**
  	 * A watcher parses an expression, collects dependencies,
  	 * and fires callback when the expression value changes.
  	 * This is used for both the $watch() api and directives.
  	 *
  	 * @param {Vue} vm
  	 * @param {String|Function} expOrFn
  	 * @param {Function} cb
  	 * @param {Object} options
  	 *                 - {Array} filters
  	 *                 - {Boolean} twoWay
  	 *                 - {Boolean} deep
  	 *                 - {Boolean} user
  	 *                 - {Boolean} sync
  	 *                 - {Boolean} lazy
  	 *                 - {Function} [preProcess]
  	 *                 - {Function} [postProcess]
  	 * @constructor
  	 */
  	function Watcher(vm, expOrFn, cb, options) {
  	  // mix in options
  	  if (options) {
  	    extend(this, options);
  	  }
  	  var isFn = typeof expOrFn === 'function';
  	  this.vm = vm;
  	  vm._watchers.push(this);
  	  this.expression = expOrFn;
  	  this.cb = cb;
  	  this.id = ++uid$2; // uid for batching
  	  this.active = true;
  	  this.dirty = this.lazy; // for lazy watchers
  	  this.deps = [];
  	  this.newDeps = [];
  	  this.depIds = new _Set();
  	  this.newDepIds = new _Set();
  	  this.prevError = null; // for async error stacks
  	  // parse expression for getter/setter
  	  if (isFn) {
  	    this.getter = expOrFn;
  	    this.setter = undefined;
  	  } else {
  	    var res = parseExpression(expOrFn, this.twoWay);
  	    this.getter = res.get;
  	    this.setter = res.set;
  	  }
  	  this.value = this.lazy ? undefined : this.get();
  	  // state for avoiding false triggers for deep and Array
  	  // watchers during vm._digest()
  	  this.queued = this.shallow = false;
  	}
  
  	/**
  	 * Evaluate the getter, and re-collect dependencies.
  	 */
  
  	Watcher.prototype.get = function () {
  	  this.beforeGet();
  	  var scope = this.scope || this.vm;
  	  var value;
  	  try {
  	    value = this.getter.call(scope, scope);
  	  } catch (e) {
  	    if (process.env.NODE_ENV !== 'production' && config.warnExpressionErrors) {
  	      warn('Error when evaluating expression ' + '"' + this.expression + '": ' + e.toString(), this.vm);
  	    }
  	  }
  	  // "touch" every property so they are all tracked as
  	  // dependencies for deep watching
  	  if (this.deep) {
  	    traverse(value);
  	  }
  	  if (this.preProcess) {
  	    value = this.preProcess(value);
  	  }
  	  if (this.filters) {
  	    value = scope._applyFilters(value, null, this.filters, false);
  	  }
  	  if (this.postProcess) {
  	    value = this.postProcess(value);
  	  }
  	  this.afterGet();
  	  return value;
  	};
  
  	/**
  	 * Set the corresponding value with the setter.
  	 *
  	 * @param {*} value
  	 */
  
  	Watcher.prototype.set = function (value) {
  	  var scope = this.scope || this.vm;
  	  if (this.filters) {
  	    value = scope._applyFilters(value, this.value, this.filters, true);
  	  }
  	  try {
  	    this.setter.call(scope, scope, value);
  	  } catch (e) {
  	    if (process.env.NODE_ENV !== 'production' && config.warnExpressionErrors) {
  	      warn('Error when evaluating setter ' + '"' + this.expression + '": ' + e.toString(), this.vm);
  	    }
  	  }
  	  // two-way sync for v-for alias
  	  var forContext = scope.$forContext;
  	  if (forContext && forContext.alias === this.expression) {
  	    if (forContext.filters) {
  	      process.env.NODE_ENV !== 'production' && warn('It seems you are using two-way binding on ' + 'a v-for alias (' + this.expression + '), and the ' + 'v-for has filters. This will not work properly. ' + 'Either remove the filters or use an array of ' + 'objects and bind to object properties instead.', this.vm);
  	      return;
  	    }
  	    forContext._withLock(function () {
  	      if (scope.$key) {
  	        // original is an object
  	        forContext.rawValue[scope.$key] = value;
  	      } else {
  	        forContext.rawValue.$set(scope.$index, value);
  	      }
  	    });
  	  }
  	};
  
  	/**
  	 * Prepare for dependency collection.
  	 */
  
  	Watcher.prototype.beforeGet = function () {
  	  Dep.target = this;
  	};
  
  	/**
  	 * Add a dependency to this directive.
  	 *
  	 * @param {Dep} dep
  	 */
  
  	Watcher.prototype.addDep = function (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.afterGet = function () {
  	  Dep.target = null;
  	  var i = this.deps.length;
  	  while (i--) {
  	    var dep = this.deps[i];
  	    if (!this.newDepIds.has(dep.id)) {
  	      dep.removeSub(this);
  	    }
  	  }
  	  var tmp = this.depIds;
  	  this.depIds = this.newDepIds;
  	  this.newDepIds = tmp;
  	  this.newDepIds.clear();
  	  tmp = this.deps;
  	  this.deps = this.newDeps;
  	  this.newDeps = tmp;
  	  this.newDeps.length = 0;
  	};
  
  	/**
  	 * Subscriber interface.
  	 * Will be called when a dependency changes.
  	 *
  	 * @param {Boolean} shallow
  	 */
  
  	Watcher.prototype.update = function (shallow) {
  	  if (this.lazy) {
  	    this.dirty = true;
  	  } else if (this.sync || !config.async) {
  	    this.run();
  	  } else {
  	    // if queued, only overwrite shallow with non-shallow,
  	    // but not the other way around.
  	    this.shallow = this.queued ? shallow ? this.shallow : false : !!shallow;
  	    this.queued = true;
  	    // record before-push error stack in debug mode
  	    /* istanbul ignore if */
  	    if (process.env.NODE_ENV !== 'production' && config.debug) {
  	      this.prevError = new Error('[vue] async stack trace');
  	    }
  	    pushWatcher(this);
  	  }
  	};
  
  	/**
  	 * Batcher job interface.
  	 * Will be called by the batcher.
  	 */
  
  	Watcher.prototype.run = function () {
  	  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; but only do so if this is a
  	    // non-shallow update (caused by a vm digest).
  	    (isObject(value) || this.deep) && !this.shallow) {
  	      // set new value
  	      var oldValue = this.value;
  	      this.value = value;
  	      // in debug + async mode, when a watcher callbacks
  	      // throws, we also throw the saved before-push error
  	      // so the full cross-tick stack trace is available.
  	      var prevError = this.prevError;
  	      /* istanbul ignore if */
  	      if (process.env.NODE_ENV !== 'production' && config.debug && prevError) {
  	        this.prevError = null;
  	        try {
  	          this.cb.call(this.vm, value, oldValue);
  	        } catch (e) {
  	          nextTick(function () {
  	            throw prevError;
  	          }, 0);
  	          throw e;
  	        }
  	      } else {
  	        this.cb.call(this.vm, value, oldValue);
  	      }
  	    }
  	    this.queued = this.shallow = false;
  	  }
  	};
  
  	/**
  	 * Evaluate the value of the watcher.
  	 * This only gets called for lazy watchers.
  	 */
  
  	Watcher.prototype.evaluate = function () {
  	  // avoid overwriting another watcher that is being
  	  // collected.
  	  var current = Dep.target;
  	  this.value = this.get();
  	  this.dirty = false;
  	  Dep.target = current;
  	};
  
  	/**
  	 * Depend on all deps collected by this watcher.
  	 */
  
  	Watcher.prototype.depend = function () {
  	  var i = this.deps.length;
  	  while (i--) {
  	    this.deps[i].depend();
  	  }
  	};
  
  	/**
  	 * Remove self from all dependencies' subcriber list.
  	 */
  
  	Watcher.prototype.teardown = function () {
  	  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 or is performing a v-for
  	    // re-render (the watcher list is then filtered by v-for).
  	    if (!this.vm._isBeingDestroyed && !this.vm._vForRemoving) {
  	      this.vm._watchers.$remove(this);
  	    }
  	    var i = this.deps.length;
  	    while (i--) {
  	      this.deps[i].removeSub(this);
  	    }
  	    this.active = false;
  	    this.vm = this.cb = this.value = null;
  	  }
  	};
  
  	/**
  	 * Recrusively traverse an object to evoke all converted
  	 * getters, so that every nested property inside the object
  	 * is collected as a "deep" dependency.
  	 *
  	 * @param {*} val
  	 */
  
  	var seenObjects = new _Set();
  	function traverse(val, seen) {
  	  var i = undefined,
  	      keys = undefined;
  	  if (!seen) {
  	    seen = seenObjects;
  	    seen.clear();
  	  }
  	  var isA = isArray(val);
  	  var isO = isObject(val);
  	  if (isA || isO) {
  	    if (val.__ob__) {
  	      var depId = val.__ob__.dep.id;
  	      if (seen.has(depId)) {
  	        return;
  	      } else {
  	        seen.add(depId);
  	      }
  	    }
  	    if (isA) {
  	      i = val.length;
  	      while (i--) traverse(val[i], seen);
  	    } else if (isO) {
  	      keys = Object.keys(val);
  	      i = keys.length;
  	      while (i--) traverse(val[keys[i]], seen);
  	    }
  	  }
  	}
  
  	var text$1 = {
  
  	  bind: function bind() {
  	    this.attr = this.el.nodeType === 3 ? 'data' : 'textContent';
  	  },
  
  	  update: function update(value) {
  	    this.el[this.attr] = _toString(value);
  	  }
  	};
  
  	var templateCache = new Cache(1000);
  	var idSelectorCache = new Cache(1000);
  
  	var map = {
  	  efault: [0, '', ''],
  	  legend: [1, '<fieldset>', '</fieldset>'],
  	  tr: [2, '<table><tbody>', '</tbody></table>'],
  	  col: [2, '<table><tbody></tbody><colgroup>', '</colgroup></table>']
  	};
  
  	map.td = map.th = [3, '<table><tbody><tr>', '</tr></tbody></table>'];
  
  	map.option = map.optgroup = [1, '<select multiple="multiple">', '</select>'];
  
  	map.thead = map.tbody = map.colgroup = map.caption = map.tfoot = [1, '<table>', '</table>'];
  
  	map.g = map.defs = map.symbol = map.use = map.image = map.text = map.circle = map.ellipse = map.line = map.path = map.polygon = map.polyline = map.rect = [1, '<svg ' + 'xmlns="http://www.w3.org/2000/svg" ' + 'xmlns:xlink="http://www.w3.org/1999/xlink" ' + 'xmlns:ev="http://www.w3.org/2001/xml-events"' + 'version="1.1">', '</svg>'];
  
  	/**
  	 * Check if a node is a supported template node with a
  	 * DocumentFragment content.
  	 *
  	 * @param {Node} node
  	 * @return {Boolean}
  	 */
  
  	function isRealTemplate(node) {
  	  return isTemplate(node) && isFragment(node.content);
  	}
  
  	var tagRE$1 = /<([\w:-]+)/;
  	var entityRE = /&#?\w+?;/;
  
  	/**
  	 * Convert a string template to a DocumentFragment.
  	 * Determines correct wrapping by tag types. Wrapping
  	 * strategy found in jQuery & component/domify.
  	 *
  	 * @param {String} templateString
  	 * @param {Boolean} raw
  	 * @return {DocumentFragment}
  	 */
  
  	function stringToFragment(templateString, raw) {
  	  // try a cache hit first
  	  var cacheKey = raw ? templateString : templateString.trim();
  	  var hit = templateCache.get(cacheKey);
  	  if (hit) {
  	    return hit;
  	  }
  
  	  var frag = document.createDocumentFragment();
  	  var tagMatch = templateString.match(tagRE$1);
  	  var entityMatch = entityRE.test(templateString);
  
  	  if (!tagMatch && !entityMatch) {
  	    // text only, return a single text node.
  	    frag.appendChild(document.createTextNode(templateString));
  	  } else {
  	    var tag = tagMatch && tagMatch[1];
  	    var wrap = map[tag] || map.efault;
  	    var depth = wrap[0];
  	    var prefix = wrap[1];
  	    var suffix = wrap[2];
  	    var node = document.createElement('div');
  
  	    node.innerHTML = prefix + templateString + suffix;
  	    while (depth--) {
  	      node = node.lastChild;
  	    }
  
  	    var child;
  	    /* eslint-disable no-cond-assign */
  	    while (child = node.firstChild) {
  	      /* eslint-enable no-cond-assign */
  	      frag.appendChild(child);
  	    }
  	  }
  	  if (!raw) {
  	    trimNode(frag);
  	  }
  	  templateCache.put(cacheKey, frag);
  	  return frag;
  	}
  
  	/**
  	 * Convert a template node to a DocumentFragment.
  	 *
  	 * @param {Node} node
  	 * @return {DocumentFragment}
  	 */
  
  	function nodeToFragment(node) {
  	  // if its a template tag and the browser supports it,
  	  // its content is already a document fragment. However, iOS Safari has
  	  // bug when using directly cloned template content with touch
  	  // events and can cause crashes when the nodes are removed from DOM, so we
  	  // have to treat template elements as string templates. (#2805)
  	  /* istanbul ignore if */
  	  if (isRealTemplate(node)) {
  	    return stringToFragment(node.innerHTML);
  	  }
  	  // script template
  	  if (node.tagName === 'SCRIPT') {
  	    return stringToFragment(node.textContent);
  	  }
  	  // normal node, clone it to avoid mutating the original
  	  var clonedNode = cloneNode(node);
  	  var frag = document.createDocumentFragment();
  	  var child;
  	  /* eslint-disable no-cond-assign */
  	  while (child = clonedNode.firstChild) {
  	    /* eslint-enable no-cond-assign */
  	    frag.appendChild(child);
  	  }
  	  trimNode(frag);
  	  return frag;
  	}
  
  	// Test for the presence of the Safari template cloning bug
  	// https://bugs.webkit.org/showug.cgi?id=137755
  	var hasBrokenTemplate = (function () {
  	  /* istanbul ignore else */
  	  if (inBrowser) {
  	    var a = document.createElement('div');
  	    a.innerHTML = '<template>1</template>';
  	    return !a.cloneNode(true).firstChild.innerHTML;
  	  } else {
  	    return false;
  	  }
  	})();
  
  	// Test for IE10/11 textarea placeholder clone bug
  	var hasTextareaCloneBug = (function () {
  	  /* istanbul ignore else */
  	  if (inBrowser) {
  	    var t = document.createElement('textarea');
  	    t.placeholder = 't';
  	    return t.cloneNode(true).value === 't';
  	  } else {
  	    return false;
  	  }
  	})();
  
  	/**
  	 * 1. Deal with Safari cloning nested <template> bug by
  	 *    manually cloning all template instances.
  	 * 2. Deal with IE10/11 textarea placeholder bug by setting
  	 *    the correct value after cloning.
  	 *
  	 * @param {Element|DocumentFragment} node
  	 * @return {Element|DocumentFragment}
  	 */
  
  	function cloneNode(node) {
  	  /* istanbul ignore if */
  	  if (!node.querySelectorAll) {
  	    return node.cloneNode();
  	  }
  	  var res = node.cloneNode(true);
  	  var i, original, cloned;
  	  /* istanbul ignore if */
  	  if (hasBrokenTemplate) {
  	    var tempClone = res;
  	    if (isRealTemplate(node)) {
  	      node = node.content;
  	      tempClone = res.content;
  	    }
  	    original = node.querySelectorAll('template');
  	    if (original.length) {
  	      cloned = tempClone.querySelectorAll('template');
  	      i = cloned.length;
  	      while (i--) {
  	        cloned[i].parentNode.replaceChild(cloneNode(original[i]), cloned[i]);
  	      }
  	    }
  	  }
  	  /* istanbul ignore if */
  	  if (hasTextareaCloneBug) {
  	    if (node.tagName === 'TEXTAREA') {
  	      res.value = node.value;
  	    } else {
  	      original = node.querySelectorAll('textarea');
  	      if (original.length) {
  	        cloned = res.querySelectorAll('textarea');
  	        i = cloned.length;
  	        while (i--) {
  	          cloned[i].value = original[i].value;
  	        }
  	      }
  	    }
  	  }
  	  return res;
  	}
  
  	/**
  	 * Process the template option and normalizes it into a
  	 * a DocumentFragment that can be used as a partial or a
  	 * instance template.
  	 *
  	 * @param {*} template
  	 *        Possible values include:
  	 *        - DocumentFragment object
  	 *        - Node object of type Template
  	 *        - id selector: '#some-template-id'
  	 *        - template string: '<div><span>{{msg}}</span></div>'
  	 * @param {Boolean} shouldClone
  	 * @param {Boolean} raw
  	 *        inline HTML interpolation. Do not check for id
  	 *        selector and keep whitespace in the string.
  	 * @return {DocumentFragment|undefined}
  	 */
  
  	function parseTemplate(template, shouldClone, raw) {
  	  var node, frag;
  
  	  // if the template is already a document fragment,
  	  // do nothing
  	  if (isFragment(template)) {
  	    trimNode(template);
  	    return shouldClone ? cloneNode(template) : template;
  	  }
  
  	  if (typeof template === 'string') {
  	    // id selector
  	    if (!raw && template.charAt(0) === '#') {
  	      // id selector can be cached too
  	      frag = idSelectorCache.get(template);
  	      if (!frag) {
  	        node = document.getElementById(template.slice(1));
  	        if (node) {
  	          frag = nodeToFragment(node);
  	          // save selector to cache
  	          idSelectorCache.put(template, frag);
  	        }
  	      }
  	    } else {
  	      // normal string template
  	      frag = stringToFragment(template, raw);
  	    }
  	  } else if (template.nodeType) {
  	    // a direct node
  	    frag = nodeToFragment(template);
  	  }
  
  	  return frag && shouldClone ? cloneNode(frag) : frag;
  	}
  
  	var template = Object.freeze({
  	  cloneNode: cloneNode,
  	  parseTemplate: parseTemplate
  	});
  
  	var html = {
  
  	  bind: function bind() {
  	    // a comment node means this is a binding for
  	    // {{{ inline unescaped html }}}
  	    if (this.el.nodeType === 8) {
  	      // hold nodes
  	      this.nodes = [];
  	      // replace the placeholder with proper anchor
  	      this.anchor = createAnchor('v-html');
  	      replace(this.el, this.anchor);
  	    }
  	  },
  
  	  update: function update(value) {
  	    value = _toString(value);
  	    if (this.nodes) {
  	      this.swap(value);
  	    } else {
  	      this.el.innerHTML = value;
  	    }
  	  },
  
  	  swap: function swap(value) {
  	    // remove old nodes
  	    var i = this.nodes.length;
  	    while (i--) {
  	      remove(this.nodes[i]);
  	    }
  	    // convert new value to a fragment
  	    // do not attempt to retrieve from id selector
  	    var frag = parseTemplate(value, true, true);
  	    // save a reference to these nodes so we can remove later
  	    this.nodes = toArray(frag.childNodes);
  	    before(frag, this.anchor);
  	  }
  	};
  
  	/**
  	 * Abstraction for a partially-compiled fragment.
  	 * Can optionally compile content with a child scope.
  	 *
  	 * @param {Function} linker
  	 * @param {Vue} vm
  	 * @param {DocumentFragment} frag
  	 * @param {Vue} [host]
  	 * @param {Object} [scope]
  	 * @param {Fragment} [parentFrag]
  	 */
  	function Fragment(linker, vm, frag, host, scope, parentFrag) {
  	  this.children = [];
  	  this.childFrags = [];
  	  this.vm = vm;
  	  this.scope = scope;
  	  this.inserted = false;
  	  this.parentFrag = parentFrag;
  	  if (parentFrag) {
  	    parentFrag.childFrags.push(this);
  	  }
  	  this.unlink = linker(vm, frag, host, scope, this);
  	  var single = this.single = frag.childNodes.length === 1 &&
  	  // do not go single mode if the only node is an anchor
  	  !frag.childNodes[0].__v_anchor;
  	  if (single) {
  	    this.node = frag.childNodes[0];
  	    this.before = singleBefore;
  	    this.remove = singleRemove;
  	  } else {
  	    this.node = createAnchor('fragment-start');
  	    this.end = createAnchor('fragment-end');
  	    this.frag = frag;
  	    prepend(this.node, frag);
  	    frag.appendChild(this.end);
  	    this.before = multiBefore;
  	    this.remove = multiRemove;
  	  }
  	  this.node.__v_frag = this;
  	}
  
  	/**
  	 * Call attach/detach for all components contained within
  	 * this fragment. Also do so recursively for all child
  	 * fragments.
  	 *
  	 * @param {Function} hook
  	 */
  
  	Fragment.prototype.callHook = function (hook) {
  	  var i, l;
  	  for (i = 0, l = this.childFrags.length; i < l; i++) {
  	    this.childFrags[i].callHook(hook);
  	  }
  	  for (i = 0, l = this.children.length; i < l; i++) {
  	    hook(this.children[i]);
  	  }
  	};
  
  	/**
  	 * Insert fragment before target, single node version
  	 *
  	 * @param {Node} target
  	 * @param {Boolean} withTransition
  	 */
  
  	function singleBefore(target, withTransition) {
  	  this.inserted = true;
  	  var method = withTransition !== false ? beforeWithTransition : before;
  	  method(this.node, target, this.vm);
  	  if (inDoc(this.node)) {
  	    this.callHook(attach);
  	  }
  	}
  
  	/**
  	 * Remove fragment, single node version
  	 */
  
  	function singleRemove() {
  	  this.inserted = false;
  	  var shouldCallRemove = inDoc(this.node);
  	  var self = this;
  	  this.beforeRemove();
  	  removeWithTransition(this.node, this.vm, function () {
  	    if (shouldCallRemove) {
  	      self.callHook(detach);
  	    }
  	    self.destroy();
  	  });
  	}
  
  	/**
  	 * Insert fragment before target, multi-nodes version
  	 *
  	 * @param {Node} target
  	 * @param {Boolean} withTransition
  	 */
  
  	function multiBefore(target, withTransition) {
  	  this.inserted = true;
  	  var vm = this.vm;
  	  var method = withTransition !== false ? beforeWithTransition : before;
  	  mapNodeRange(this.node, this.end, function (node) {
  	    method(node, target, vm);
  	  });
  	  if (inDoc(this.node)) {
  	    this.callHook(attach);
  	  }
  	}
  
  	/**
  	 * Remove fragment, multi-nodes version
  	 */
  
  	function multiRemove() {
  	  this.inserted = false;
  	  var self = this;
  	  var shouldCallRemove = inDoc(this.node);
  	  this.beforeRemove();
  	  removeNodeRange(this.node, this.end, this.vm, this.frag, function () {
  	    if (shouldCallRemove) {
  	      self.callHook(detach);
  	    }
  	    self.destroy();
  	  });
  	}
  
  	/**
  	 * Prepare the fragment for removal.
  	 */
  
  	Fragment.prototype.beforeRemove = function () {
  	  var i, l;
  	  for (i = 0, l = this.childFrags.length; i < l; i++) {
  	    // call the same method recursively on child
  	    // fragments, depth-first
  	    this.childFrags[i].beforeRemove(false);
  	  }
  	  for (i = 0, l = this.children.length; i < l; i++) {
  	    // Call destroy for all contained instances,
  	    // with remove:false and defer:true.
  	    // Defer is necessary because we need to
  	    // keep the children to call detach hooks
  	    // on them.
  	    this.children[i].$destroy(false, true);
  	  }
  	  var dirs = this.unlink.dirs;
  	  for (i = 0, l = dirs.length; i < l; i++) {
  	    // disable the watchers on all the directives
  	    // so that the rendered content stays the same
  	    // during removal.
  	    dirs[i]._watcher && dirs[i]._watcher.teardown();
  	  }
  	};
  
  	/**
  	 * Destroy the fragment.
  	 */
  
  	Fragment.prototype.destroy = function () {
  	  if (this.parentFrag) {
  	    this.parentFrag.childFrags.$remove(this);
  	  }
  	  this.node.__v_frag = null;
  	  this.unlink();
  	};
  
  	/**
  	 * Call attach hook for a Vue instance.
  	 *
  	 * @param {Vue} child
  	 */
  
  	function attach(child) {
  	  if (!child._isAttached && inDoc(child.$el)) {
  	    child._callHook('attached');
  	  }
  	}
  
  	/**
  	 * Call detach hook for a Vue instance.
  	 *
  	 * @param {Vue} child
  	 */
  
  	function detach(child) {
  	  if (child._isAttached && !inDoc(child.$el)) {
  	    child._callHook('detached');
  	  }
  	}
  
  	var linkerCache = new Cache(5000);
  
  	/**
  	 * A factory that can be used to create instances of a
  	 * fragment. Caches the compiled linker if possible.
  	 *
  	 * @param {Vue} vm
  	 * @param {Element|String} el
  	 */
  	function FragmentFactory(vm, el) {
  	  this.vm = vm;
  	  var template;
  	  var isString = typeof el === 'string';
  	  if (isString || isTemplate(el) && !el.hasAttribute('v-if')) {
  	    template = parseTemplate(el, true);
  	  } else {
  	    template = document.createDocumentFragment();
  	    template.appendChild(el);
  	  }
  	  this.template = template;
  	  // linker can be cached, but only for components
  	  var linker;
  	  var cid = vm.constructor.cid;
  	  if (cid > 0) {
  	    var cacheId = cid + (isString ? el : getOuterHTML(el));
  	    linker = linkerCache.get(cacheId);
  	    if (!linker) {
  	      linker = compile(template, vm.$options, true);
  	      linkerCache.put(cacheId, linker);
  	    }
  	  } else {
  	    linker = compile(template, vm.$options, true);
  	  }
  	  this.linker = linker;
  	}
  
  	/**
  	 * Create a fragment instance with given host and scope.
  	 *
  	 * @param {Vue} host
  	 * @param {Object} scope
  	 * @param {Fragment} parentFrag
  	 */
  
  	FragmentFactory.prototype.create = function (host, scope, parentFrag) {
  	  var frag = cloneNode(this.template);
  	  return new Fragment(this.linker, this.vm, frag, host, scope, parentFrag);
  	};
  
  	var ON = 700;
  	var MODEL = 800;
  	var BIND = 850;
  	var TRANSITION = 1100;
  	var EL = 1500;
  	var COMPONENT = 1500;
  	var PARTIAL = 1750;
  	var IF = 2100;
  	var FOR = 2200;
  	var SLOT = 2300;
  
  	var uid$3 = 0;
  
  	var vFor = {
  
  	  priority: FOR,
  	  terminal: true,
  
  	  params: ['track-by', 'stagger', 'enter-stagger', 'leave-stagger'],
  
  	  bind: function bind() {
  	    // support "item in/of items" syntax
  	    var inMatch = this.expression.match(/(.*) (?:in|of) (.*)/);
  	    if (inMatch) {
  	      var itMatch = inMatch[1].match(/\((.*),(.*)\)/);
  	      if (itMatch) {
  	        this.iterator = itMatch[1].trim();
  	        this.alias = itMatch[2].trim();
  	      } else {
  	        this.alias = inMatch[1].trim();
  	      }
  	      this.expression = inMatch[2];
  	    }
  
  	    if (!this.alias) {
  	      process.env.NODE_ENV !== 'production' && warn('Invalid v-for expression "' + this.descriptor.raw + '": ' + 'alias is required.', this.vm);
  	      return;
  	    }
  
  	    // uid as a cache identifier
  	    this.id = '__v-for__' + ++uid$3;
  
  	    // check if this is an option list,
  	    // so that we know if we need to update the <select>'s
  	    // v-model when the option list has changed.
  	    // because v-model has a lower priority than v-for,
  	    // the v-model is not bound here yet, so we have to
  	    // retrive it in the actual updateModel() function.
  	    var tag = this.el.tagName;
  	    this.isOption = (tag === 'OPTION' || tag === 'OPTGROUP') && this.el.parentNode.tagName === 'SELECT';
  
  	    // setup anchor nodes
  	    this.start = createAnchor('v-for-start');
  	    this.end = createAnchor('v-for-end');
  	    replace(this.el, this.end);
  	    before(this.start, this.end);
  
  	    // cache
  	    this.cache = Object.create(null);
  
  	    // fragment factory
  	    this.factory = new FragmentFactory(this.vm, this.el);
  	  },
  
  	  update: function update(data) {
  	    this.diff(data);
  	    this.updateRef();
  	    this.updateModel();
  	  },
  
  	  /**
  	   * Diff, based on new data and old data, determine the
  	   * minimum amount of DOM manipulations needed to make the
  	   * DOM reflect the new data Array.
  	   *
  	   * The algorithm diffs the new data Array by storing a
  	   * hidden reference to an owner vm instance on previously
  	   * seen data. This allows us to achieve O(n) which is
  	   * better than a levenshtein distance based algorithm,
  	   * which is O(m * n).
  	   *
  	   * @param {Array} data
  	   */
  
  	  diff: function diff(data) {
  	    // check if the Array was converted from an Object
  	    var item = data[0];
  	    var convertedFromObject = this.fromObject = isObject(item) && hasOwn(item, '$key') && hasOwn(item, '$value');
  
  	    var trackByKey = this.params.trackBy;
  	    var oldFrags = this.frags;
  	    var frags = this.frags = new Array(data.length);
  	    var alias = this.alias;
  	    var iterator = this.iterator;
  	    var start = this.start;
  	    var end = this.end;
  	    var inDocument = inDoc(start);
  	    var init = !oldFrags;
  	    var i, l, frag, key, value, primitive;
  
  	    // First pass, go through the new Array and fill up
  	    // the new frags array. If a piece of data has a cached
  	    // instance for it, we reuse it. Otherwise build a new
  	    // instance.
  	    for (i = 0, l = data.length; i < l; i++) {
  	      item = data[i];
  	      key = convertedFromObject ? item.$key : null;
  	      value = convertedFromObject ? item.$value : item;
  	      primitive = !isObject(value);
  	      frag = !init && this.getCachedFrag(value, i, key);
  	      if (frag) {
  	        // reusable fragment
  	        frag.reused = true;
  	        // update $index
  	        frag.scope.$index = i;
  	        // update $key
  	        if (key) {
  	          frag.scope.$key = key;
  	        }
  	        // update iterator
  	        if (iterator) {
  	          frag.scope[iterator] = key !== null ? key : i;
  	        }
  	        // update data for track-by, object repeat &
  	        // primitive values.
  	        if (trackByKey || convertedFromObject || primitive) {
  	          withoutConversion(function () {
  	            frag.scope[alias] = value;
  	          });
  	        }
  	      } else {
  	        // new isntance
  	        frag = this.create(value, alias, i, key);
  	        frag.fresh = !init;
  	      }
  	      frags[i] = frag;
  	      if (init) {
  	        frag.before(end);
  	      }
  	    }
  
  	    // we're done for the initial render.
  	    if (init) {
  	      return;
  	    }
  
  	    // Second pass, go through the old fragments and
  	    // destroy those who are not reused (and remove them
  	    // from cache)
  	    var removalIndex = 0;
  	    var totalRemoved = oldFrags.length - frags.length;
  	    // when removing a large number of fragments, watcher removal
  	    // turns out to be a perf bottleneck, so we batch the watcher
  	    // removals into a single filter call!
  	    this.vm._vForRemoving = true;
  	    for (i = 0, l = oldFrags.length; i < l; i++) {
  	      frag = oldFrags[i];
  	      if (!frag.reused) {
  	        this.deleteCachedFrag(frag);
  	        this.remove(frag, removalIndex++, totalRemoved, inDocument);
  	      }
  	    }
  	    this.vm._vForRemoving = false;
  	    if (removalIndex) {
  	      this.vm._watchers = this.vm._watchers.filter(function (w) {
  	        return w.active;
  	      });
  	    }
  
  	    // Final pass, move/insert new fragments into the
  	    // right place.
  	    var targetPrev, prevEl, currentPrev;
  	    var insertionIndex = 0;
  	    for (i = 0, l = frags.length; i < l; i++) {
  	      frag = frags[i];
  	      // this is the frag that we should be after
  	      targetPrev = frags[i - 1];
  	      prevEl = targetPrev ? targetPrev.staggerCb ? targetPrev.staggerAnchor : targetPrev.end || targetPrev.node : start;
  	      if (frag.reused && !frag.staggerCb) {
  	        currentPrev = findPrevFrag(frag, start, this.id);
  	        if (currentPrev !== targetPrev && (!currentPrev ||
  	        // optimization for moving a single item.
  	        // thanks to suggestions by @livoras in #1807
  	        findPrevFrag(currentPrev, start, this.id) !== targetPrev)) {
  	          this.move(frag, prevEl);
  	        }
  	      } else {
  	        // new instance, or still in stagger.
  	        // insert with updated stagger index.
  	        this.insert(frag, insertionIndex++, prevEl, inDocument);
  	      }
  	      frag.reused = frag.fresh = false;
  	    }
  	  },
  
  	  /**
  	   * Create a new fragment instance.
  	   *
  	   * @param {*} value
  	   * @param {String} alias
  	   * @param {Number} index
  	   * @param {String} [key]
  	   * @return {Fragment}
  	   */
  
  	  create: function create(value, alias, index, key) {
  	    var host = this._host;
  	    // create iteration scope
  	    var parentScope = this._scope || this.vm;
  	    var scope = Object.create(parentScope);
  	    // ref holder for the scope
  	    scope.$refs = Object.create(parentScope.$refs);
  	    scope.$els = Object.create(parentScope.$els);
  	    // make sure point $parent to parent scope
  	    scope.$parent = parentScope;
  	    // for two-way binding on alias
  	    scope.$forContext = this;
  	    // define scope properties
  	    // important: define the scope alias without forced conversion
  	    // so that frozen data structures remain non-reactive.
  	    withoutConversion(function () {
  	      defineReactive(scope, alias, value);
  	    });
  	    defineReactive(scope, '$index', index);
  	    if (key) {
  	      defineReactive(scope, '$key', key);
  	    } else if (scope.$key) {
  	      // avoid accidental fallback
  	      def(scope, '$key', null);
  	    }
  	    if (this.iterator) {
  	      defineReactive(scope, this.iterator, key !== null ? key : index);
  	    }
  	    var frag = this.factory.create(host, scope, this._frag);
  	    frag.forId = this.id;
  	    this.cacheFrag(value, frag, index, key);
  	    return frag;
  	  },
  
  	  /**
  	   * Update the v-ref on owner vm.
  	   */
  
  	  updateRef: function updateRef() {
  	    var ref = this.descriptor.ref;
  	    if (!ref) return;
  	    var hash = (this._scope || this.vm).$refs;
  	    var refs;
  	    if (!this.fromObject) {
  	      refs = this.frags.map(findVmFromFrag);
  	    } else {
  	      refs = {};
  	      this.frags.forEach(function (frag) {
  	        refs[frag.scope.$key] = findVmFromFrag(frag);
  	      });
  	    }
  	    hash[ref] = refs;
  	  },
  
  	  /**
  	   * For option lists, update the containing v-model on
  	   * parent <select>.
  	   */
  
  	  updateModel: function updateModel() {
  	    if (this.isOption) {
  	      var parent = this.start.parentNode;
  	      var model = parent && parent.__v_model;
  	      if (model) {
  	        model.forceUpdate();
  	      }
  	    }
  	  },
  
  	  /**
  	   * Insert a fragment. Handles staggering.
  	   *
  	   * @param {Fragment} frag
  	   * @param {Number} index
  	   * @param {Node} prevEl
  	   * @param {Boolean} inDocument
  	   */
  
  	  insert: function insert(frag, index, prevEl, inDocument) {
  	    if (frag.staggerCb) {
  	      frag.staggerCb.cancel();
  	      frag.staggerCb = null;
  	    }
  	    var staggerAmount = this.getStagger(frag, index, null, 'enter');
  	    if (inDocument && staggerAmount) {
  	      // create an anchor and insert it synchronously,
  	      // so that we can resolve the correct order without
  	      // worrying about some elements not inserted yet
  	      var anchor = frag.staggerAnchor;
  	      if (!anchor) {
  	        anchor = frag.staggerAnchor = createAnchor('stagger-anchor');
  	        anchor.__v_frag = frag;
  	      }
  	      after(anchor, prevEl);
  	      var op = frag.staggerCb = cancellable(function () {
  	        frag.staggerCb = null;
  	        frag.before(anchor);
  	        remove(anchor);
  	      });
  	      setTimeout(op, staggerAmount);
  	    } else {
  	      var target = prevEl.nextSibling;
  	      /* istanbul ignore if */
  	      if (!target) {
  	        // reset end anchor position in case the position was messed up
  	        // by an external drag-n-drop library.
  	        after(this.end, prevEl);
  	        target = this.end;
  	      }
  	      frag.before(target);
  	    }
  	  },
  
  	  /**
  	   * Remove a fragment. Handles staggering.
  	   *
  	   * @param {Fragment} frag
  	   * @param {Number} index
  	   * @param {Number} total
  	   * @param {Boolean} inDocument
  	   */
  
  	  remove: function remove(frag, index, total, inDocument) {
  	    if (frag.staggerCb) {
  	      frag.staggerCb.cancel();
  	      frag.staggerCb = null;
  	      // it's not possible for the same frag to be removed
  	      // twice, so if we have a pending stagger callback,
  	      // it means this frag is queued for enter but removed
  	      // before its transition started. Since it is already
  	      // destroyed, we can just leave it in detached state.
  	      return;
  	    }
  	    var staggerAmount = this.getStagger(frag, index, total, 'leave');
  	    if (inDocument && staggerAmount) {
  	      var op = frag.staggerCb = cancellable(function () {
  	        frag.staggerCb = null;
  	        frag.remove();
  	      });
  	      setTimeout(op, staggerAmount);
  	    } else {
  	      frag.remove();
  	    }
  	  },
  
  	  /**
  	   * Move a fragment to a new position.
  	   * Force no transition.
  	   *
  	   * @param {Fragment} frag
  	   * @param {Node} prevEl
  	   */
  
  	  move: function move(frag, prevEl) {
  	    // fix a common issue with Sortable:
  	    // if prevEl doesn't have nextSibling, this means it's
  	    // been dragged after the end anchor. Just re-position
  	    // the end anchor to the end of the container.
  	    /* istanbul ignore if */
  	    if (!prevEl.nextSibling) {
  	      this.end.parentNode.appendChild(this.end);
  	    }
  	    frag.before(prevEl.nextSibling, false);
  	  },
  
  	  /**
  	   * Cache a fragment using track-by or the object key.
  	   *
  	   * @param {*} value
  	   * @param {Fragment} frag
  	   * @param {Number} index
  	   * @param {String} [key]
  	   */
  
  	  cacheFrag: function cacheFrag(value, frag, index, key) {
  	    var trackByKey = this.params.trackBy;
  	    var cache = this.cache;
  	    var primitive = !isObject(value);
  	    var id;
  	    if (key || trackByKey || primitive) {
  	      id = getTrackByKey(index, key, value, trackByKey);
  	      if (!cache[id]) {
  	        cache[id] = frag;
  	      } else if (trackByKey !== '$index') {
  	        process.env.NODE_ENV !== 'production' && this.warnDuplicate(value);
  	      }
  	    } else {
  	      id = this.id;
  	      if (hasOwn(value, id)) {
  	        if (value[id] === null) {
  	          value[id] = frag;
  	        } else {
  	          process.env.NODE_ENV !== 'production' && this.warnDuplicate(value);
  	        }
  	      } else if (Object.isExtensible(value)) {
  	        def(value, id, frag);
  	      } else if (process.env.NODE_ENV !== 'production') {
  	        warn('Frozen v-for objects cannot be automatically tracked, make sure to ' + 'provide a track-by key.');
  	      }
  	    }
  	    frag.raw = value;
  	  },
  
  	  /**
  	   * Get a cached fragment from the value/index/key
  	   *
  	   * @param {*} value
  	   * @param {Number} index
  	   * @param {String} key
  	   * @return {Fragment}
  	   */
  
  	  getCachedFrag: function getCachedFrag(value, index, key) {
  	    var trackByKey = this.params.trackBy;
  	    var primitive = !isObject(value);
  	    var frag;
  	    if (key || trackByKey || primitive) {
  	      var id = getTrackByKey(index, key, value, trackByKey);
  	      frag = this.cache[id];
  	    } else {
  	      frag = value[this.id];
  	    }
  	    if (frag && (frag.reused || frag.fresh)) {
  	      process.env.NODE_ENV !== 'production' && this.warnDuplicate(value);
  	    }
  	    return frag;
  	  },
  
  	  /**
  	   * Delete a fragment from cache.
  	   *
  	   * @param {Fragment} frag
  	   */
  
  	  deleteCachedFrag: function deleteCachedFrag(frag) {
  	    var value = frag.raw;
  	    var trackByKey = this.params.trackBy;
  	    var scope = frag.scope;
  	    var index = scope.$index;
  	    // fix #948: avoid accidentally fall through to
  	    // a parent repeater which happens to have $key.
  	    var key = hasOwn(scope, '$key') && scope.$key;
  	    var primitive = !isObject(value);
  	    if (trackByKey || key || primitive) {
  	      var id = getTrackByKey(index, key, value, trackByKey);
  	      this.cache[id] = null;
  	    } else {
  	      value[this.id] = null;
  	      frag.raw = null;
  	    }
  	  },
  
  	  /**
  	   * Get the stagger amount for an insertion/removal.
  	   *
  	   * @param {Fragment} frag
  	   * @param {Number} index
  	   * @param {Number} total
  	   * @param {String} type
  	   */
  
  	  getStagger: function getStagger(frag, index, total, type) {
  	    type = type + 'Stagger';
  	    var trans = frag.node.__v_trans;
  	    var hooks = trans && trans.hooks;
  	    var hook = hooks && (hooks[type] || hooks.stagger);
  	    return hook ? hook.call(frag, index, total) : index * parseInt(this.params[type] || this.params.stagger, 10);
  	  },
  
  	  /**
  	   * Pre-process the value before piping it through the
  	   * filters. This is passed to and called by the watcher.
  	   */
  
  	  _preProcess: function _preProcess(value) {
  	    // regardless of type, store the un-filtered raw value.
  	    this.rawValue = value;
  	    return value;
  	  },
  
  	  /**
  	   * Post-process the value after it has been piped through
  	   * the filters. This is passed to and called by the watcher.
  	   *
  	   * It is necessary for this to be called during the
  	   * wathcer's dependency collection phase because we want
  	   * the v-for to update when the source Object is mutated.
  	   */
  
  	  _postProcess: function _postProcess(value) {
  	    if (isArray(value)) {
  	      return value;
  	    } else if (isPlainObject(value)) {
  	      // convert plain object to array.
  	      var keys = Object.keys(value);
  	      var i = keys.length;
  	      var res = new Array(i);
  	      var key;
  	      while (i--) {
  	        key = keys[i];
  	        res[i] = {
  	          $key: key,
  	          $value: value[key]
  	        };
  	      }
  	      return res;
  	    } else {
  	      if (typeof value === 'number' && !isNaN(value)) {
  	        value = range(value);
  	      }
  	      return value || [];
  	    }
  	  },
  
  	  unbind: function unbind() {
  	    if (this.descriptor.ref) {
  	      (this._scope || this.vm).$refs[this.descriptor.ref] = null;
  	    }
  	    if (this.frags) {
  	      var i = this.frags.length;
  	      var frag;
  	      while (i--) {
  	        frag = this.frags[i];
  	        this.deleteCachedFrag(frag);
  	        frag.destroy();
  	      }
  	    }
  	  }
  	};
  
  	/**
  	 * Helper to find the previous element that is a fragment
  	 * anchor. This is necessary because a destroyed frag's
  	 * element could still be lingering in the DOM before its
  	 * leaving transition finishes, but its inserted flag
  	 * should have been set to false so we can skip them.
  	 *
  	 * If this is a block repeat, we want to make sure we only
  	 * return frag that is bound to this v-for. (see #929)
  	 *
  	 * @param {Fragment} frag
  	 * @param {Comment|Text} anchor
  	 * @param {String} id
  	 * @return {Fragment}
  	 */
  
  	function findPrevFrag(frag, anchor, id) {
  	  var el = frag.node.previousSibling;
  	  /* istanbul ignore if */
  	  if (!el) return;
  	  frag = el.__v_frag;
  	  while ((!frag || frag.forId !== id || !frag.inserted) && el !== anchor) {
  	    el = el.previousSibling;
  	    /* istanbul ignore if */
  	    if (!el) return;
  	    frag = el.__v_frag;
  	  }
  	  return frag;
  	}
  
  	/**
  	 * Find a vm from a fragment.
  	 *
  	 * @param {Fragment} frag
  	 * @return {Vue|undefined}
  	 */
  
  	function findVmFromFrag(frag) {
  	  var node = frag.node;
  	  // handle multi-node frag
  	  if (frag.end) {
  	    while (!node.__vue__ && node !== frag.end && node.nextSibling) {
  	      node = node.nextSibling;
  	    }
  	  }
  	  return node.__vue__;
  	}
  
  	/**
  	 * Create a range array from given number.
  	 *
  	 * @param {Number} n
  	 * @return {Array}
  	 */
  
  	function range(n) {
  	  var i = -1;
  	  var ret = new Array(Math.floor(n));
  	  while (++i < n) {
  	    ret[i] = i;
  	  }
  	  return ret;
  	}
  
  	/**
  	 * Get the track by key for an item.
  	 *
  	 * @param {Number} index
  	 * @param {String} key
  	 * @param {*} value
  	 * @param {String} [trackByKey]
  	 */
  
  	function getTrackByKey(index, key, value, trackByKey) {
  	  return trackByKey ? trackByKey === '$index' ? index : trackByKey.charAt(0).match(/\w/) ? getPath(value, trackByKey) : value[trackByKey] : key || value;
  	}
  
  	if (process.env.NODE_ENV !== 'production') {
  	  vFor.warnDuplicate = function (value) {
  	    warn('Duplicate value found in v-for="' + this.descriptor.raw + '": ' + JSON.stringify(value) + '. Use track-by="$index" if ' + 'you are expecting duplicate values.', this.vm);
  	  };
  	}
  
  	var vIf = {
  
  	  priority: IF,
  	  terminal: true,
  
  	  bind: function bind() {
  	    var el = this.el;
  	    if (!el.__vue__) {
  	      // check else block
  	      var next = el.nextElementSibling;
  	      if (next && getAttr(next, 'v-else') !== null) {
  	        remove(next);
  	        this.elseEl = next;
  	      }
  	      // check main block
  	      this.anchor = createAnchor('v-if');
  	      replace(el, this.anchor);
  	    } else {
  	      process.env.NODE_ENV !== 'production' && warn('v-if="' + this.expression + '" cannot be ' + 'used on an instance root element.', this.vm);
  	      this.invalid = true;
  	    }
  	  },
  
  	  update: function update(value) {
  	    if (this.invalid) return;
  	    if (value) {
  	      if (!this.frag) {
  	        this.insert();
  	      }
  	    } else {
  	      this.remove();
  	    }
  	  },
  
  	  insert: function insert() {
  	    if (this.elseFrag) {
  	      this.elseFrag.remove();
  	      this.elseFrag = null;
  	    }
  	    // lazy init factory
  	    if (!this.factory) {
  	      this.factory = new FragmentFactory(this.vm, this.el);
  	    }
  	    this.frag = this.factory.create(this._host, this._scope, this._frag);
  	    this.frag.before(this.anchor);
  	  },
  
  	  remove: function remove() {
  	    if (this.frag) {
  	      this.frag.remove();
  	      this.frag = null;
  	    }
  	    if (this.elseEl && !this.elseFrag) {
  	      if (!this.elseFactory) {
  	        this.elseFactory = new FragmentFactory(this.elseEl._context || this.vm, this.elseEl);
  	      }
  	      this.elseFrag = this.elseFactory.create(this._host, this._scope, this._frag);
  	      this.elseFrag.before(this.anchor);
  	    }
  	  },
  
  	  unbind: function unbind() {
  	    if (this.frag) {
  	      this.frag.destroy();
  	    }
  	    if (this.elseFrag) {
  	      this.elseFrag.destroy();
  	    }
  	  }
  	};
  
  	var show = {
  
  	  bind: function bind() {
  	    // check else block
  	    var next = this.el.nextElementSibling;
  	    if (next && getAttr(next, 'v-else') !== null) {
  	      this.elseEl = next;
  	    }
  	  },
  
  	  update: function update(value) {
  	    this.apply(this.el, value);
  	    if (this.elseEl) {
  	      this.apply(this.elseEl, !value);
  	    }
  	  },
  
  	  apply: function apply(el, value) {
  	    if (inDoc(el)) {
  	      applyTransition(el, value ? 1 : -1, toggle, this.vm);
  	    } else {
  	      toggle();
  	    }
  	    function toggle() {
  	      el.style.display = value ? '' : 'none';
  	    }
  	  }
  	};
  
  	var text$2 = {
  
  	  bind: function bind() {
  	    var self = this;
  	    var el = this.el;
  	    var isRange = el.type === 'range';
  	    var lazy = this.params.lazy;
  	    var number = this.params.number;
  	    var debounce = this.params.debounce;
  
  	    // handle composition events.
  	    //   http://blog.evanyou.me/2014/01/03/composition-event/
  	    // skip this for Android because it handles composition
  	    // events quite differently. Android doesn't trigger
  	    // composition events for language input methods e.g.
  	    // Chinese, but instead triggers them for spelling
  	    // suggestions... (see Discussion/#162)
  	    var composing = false;
  	    if (!isAndroid && !isRange) {
  	      this.on('compositionstart', function () {
  	        composing = true;
  	      });
  	      this.on('compositionend', function () {
  	        composing = false;
  	        // in IE11 the "compositionend" event fires AFTER
  	        // the "input" event, so the input handler is blocked
  	        // at the end... have to call it here.
  	        //
  	        // #1327: in lazy mode this is unecessary.
  	        if (!lazy) {
  	          self.listener();
  	        }
  	      });
  	    }
  
  	    // prevent messing with the input when user is typing,
  	    // and force update on blur.
  	    this.focused = false;
  	    if (!isRange && !lazy) {
  	      this.on('focus', function () {
  	        self.focused = true;
  	      });
  	      this.on('blur', function () {
  	        self.focused = false;
  	        // do not sync value after fragment removal (#2017)
  	        if (!self._frag || self._frag.inserted) {
  	          self.rawListener();
  	        }
  	      });
  	    }
  
  	    // Now attach the main listener
  	    this.listener = this.rawListener = function () {
  	      if (composing || !self._bound) {
  	        return;
  	      }
  	      var val = number || isRange ? toNumber(el.value) : el.value;
  	      self.set(val);
  	      // force update on next tick to avoid lock & same value
  	      // also only update when user is not typing
  	      nextTick(function () {
  	        if (self._bound && !self.focused) {
  	          self.update(self._watcher.value);
  	        }
  	      });
  	    };
  
  	    // apply debounce
  	    if (debounce) {
  	      this.listener = _debounce(this.listener, debounce);
  	    }
  
  	    // Support jQuery events, since jQuery.trigger() doesn't
  	    // trigger native events in some cases and some plugins
  	    // rely on $.trigger()
  	    //
  	    // We want to make sure if a listener is attached using
  	    // jQuery, it is also removed with jQuery, that's why
  	    // we do the check for each directive instance and
  	    // store that check result on itself. This also allows
  	    // easier test coverage control by unsetting the global
  	    // jQuery variable in tests.
  	    this.hasjQuery = typeof jQuery === 'function';
  	    if (this.hasjQuery) {
  	      var method = jQuery.fn.on ? 'on' : 'bind';
  	      jQuery(el)[method]('change', this.rawListener);
  	      if (!lazy) {
  	        jQuery(el)[method]('input', this.listener);
  	      }
  	    } else {
  	      this.on('change', this.rawListener);
  	      if (!lazy) {
  	        this.on('input', this.listener);
  	      }
  	    }
  
  	    // IE9 doesn't fire input event on backspace/del/cut
  	    if (!lazy && isIE9) {
  	      this.on('cut', function () {
  	        nextTick(self.listener);
  	      });
  	      this.on('keyup', function (e) {
  	        if (e.keyCode === 46 || e.keyCode === 8) {
  	          self.listener();
  	        }
  	      });
  	    }
  
  	    // set initial value if present
  	    if (el.hasAttribute('value') || el.tagName === 'TEXTAREA' && el.value.trim()) {
  	      this.afterBind = this.listener;
  	    }
  	  },
  
  	  update: function update(value) {
  	    this.el.value = _toString(value);
  	  },
  
  	  unbind: function unbind() {
  	    var el = this.el;
  	    if (this.hasjQuery) {
  	      var method = jQuery.fn.off ? 'off' : 'unbind';
  	      jQuery(el)[method]('change', this.listener);
  	      jQuery(el)[method]('input', this.listener);
  	    }
  	  }
  	};
  
  	var radio = {
  
  	  bind: function bind() {
  	    var self = this;
  	    var el = this.el;
  
  	    this.getValue = function () {
  	      // value overwrite via v-bind:value
  	      if (el.hasOwnProperty('_value')) {
  	        return el._value;
  	      }
  	      var val = el.value;
  	      if (self.params.number) {
  	        val = toNumber(val);
  	      }
  	      return val;
  	    };
  
  	    this.listener = function () {
  	      self.set(self.getValue());
  	    };
  	    this.on('change', this.listener);
  
  	    if (el.hasAttribute('checked')) {
  	      this.afterBind = this.listener;
  	    }
  	  },
  
  	  update: function update(value) {
  	    this.el.checked = looseEqual(value, this.getValue());
  	  }
  	};
  
  	var select = {
  
  	  bind: function bind() {
  	    var self = this;
  	    var el = this.el;
  
  	    // method to force update DOM using latest value.
  	    this.forceUpdate = function () {
  	      if (self._watcher) {
  	        self.update(self._watcher.get());
  	      }
  	    };
  
  	    // check if this is a multiple select
  	    var multiple = this.multiple = el.hasAttribute('multiple');
  
  	    // attach listener
  	    this.listener = function () {
  	      var value = getValue(el, multiple);
  	      value = self.params.number ? isArray(value) ? value.map(toNumber) : toNumber(value) : value;
  	      self.set(value);
  	    };
  	    this.on('change', this.listener);
  
  	    // if has initial value, set afterBind
  	    var initValue = getValue(el, multiple, true);
  	    if (multiple && initValue.length || !multiple && initValue !== null) {
  	      this.afterBind = this.listener;
  	    }
  
  	    // All major browsers except Firefox resets
  	    // selectedIndex with value -1 to 0 when the element
  	    // is appended to a new parent, therefore we have to
  	    // force a DOM update whenever that happens...
  	    this.vm.$on('hook:attached', this.forceUpdate);
  	  },
  
  	  update: function update(value) {
  	    var el = this.el;
  	    el.selectedIndex = -1;
  	    var multi = this.multiple && isArray(value);
  	    var options = el.options;
  	    var i = options.length;
  	    var op, val;
  	    while (i--) {
  	      op = options[i];
  	      val = op.hasOwnProperty('_value') ? op._value : op.value;
  	      /* eslint-disable eqeqeq */
  	      op.selected = multi ? indexOf$1(value, val) > -1 : looseEqual(value, val);
  	      /* eslint-enable eqeqeq */
  	    }
  	  },
  
  	  unbind: function unbind() {
  	    /* istanbul ignore next */
  	    this.vm.$off('hook:attached', this.forceUpdate);
  	  }
  	};
  
  	/**
  	 * Get select value
  	 *
  	 * @param {SelectElement} el
  	 * @param {Boolean} multi
  	 * @param {Boolean} init
  	 * @return {Array|*}
  	 */
  
  	function getValue(el, multi, init) {
  	  var res = multi ? [] : null;
  	  var op, val, selected;
  	  for (var i = 0, l = el.options.length; i < l; i++) {
  	    op = el.options[i];
  	    selected = init ? op.hasAttribute('selected') : op.selected;
  	    if (selected) {
  	      val = op.hasOwnProperty('_value') ? op._value : op.value;
  	      if (multi) {
  	        res.push(val);
  	      } else {
  	        return val;
  	      }
  	    }
  	  }
  	  return res;
  	}
  
  	/**
  	 * Native Array.indexOf uses strict equal, but in this
  	 * case we need to match string/numbers with custom equal.
  	 *
  	 * @param {Array} arr
  	 * @param {*} val
  	 */
  
  	function indexOf$1(arr, val) {
  	  var i = arr.length;
  	  while (i--) {
  	    if (looseEqual(arr[i], val)) {
  	      return i;
  	    }
  	  }
  	  return -1;
  	}
  
  	var checkbox = {
  
  	  bind: function bind() {
  	    var self = this;
  	    var el = this.el;
  
  	    this.getValue = function () {
  	      return el.hasOwnProperty('_value') ? el._value : self.params.number ? toNumber(el.value) : el.value;
  	    };
  
  	    function getBooleanValue() {
  	      var val = el.checked;
  	      if (val && el.hasOwnProperty('_trueValue')) {
  	        return el._trueValue;
  	      }
  	      if (!val && el.hasOwnProperty('_falseValue')) {
  	        return el._falseValue;
  	      }
  	      return val;
  	    }
  
  	    this.listener = function () {
  	      var model = self._watcher.value;
  	      if (isArray(model)) {
  	        var val = self.getValue();
  	        if (el.checked) {
  	          if (indexOf(model, val) < 0) {
  	            model.push(val);
  	          }
  	        } else {
  	          model.$remove(val);
  	        }
  	      } else {
  	        self.set(getBooleanValue());
  	      }
  	    };
  
  	    this.on('change', this.listener);
  	    if (el.hasAttribute('checked')) {
  	      this.afterBind = this.listener;
  	    }
  	  },
  
  	  update: function update(value) {
  	    var el = this.el;
  	    if (isArray(value)) {
  	      el.checked = indexOf(value, this.getValue()) > -1;
  	    } else {
  	      if (el.hasOwnProperty('_trueValue')) {
  	        el.checked = looseEqual(value, el._trueValue);
  	      } else {
  	        el.checked = !!value;
  	      }
  	    }
  	  }
  	};
  
  	var handlers = {
  	  text: text$2,
  	  radio: radio,
  	  select: select,
  	  checkbox: checkbox
  	};
  
  	var model = {
  
  	  priority: MODEL,
  	  twoWay: true,
  	  handlers: handlers,
  	  params: ['lazy', 'number', 'debounce'],
  
  	  /**
  	   * Possible elements:
  	   *   <select>
  	   *   <textarea>
  	   *   <input type="*">
  	   *     - text
  	   *     - checkbox
  	   *     - radio
  	   *     - number
  	   */
  
  	  bind: function bind() {
  	    // friendly warning...
  	    this.checkFilters();
  	    if (this.hasRead && !this.hasWrite) {
  	      process.env.NODE_ENV !== 'production' && warn('It seems you are using a read-only filter with ' + 'v-model="' + this.descriptor.raw + '". ' + 'You might want to use a two-way filter to ensure correct behavior.', this.vm);
  	    }
  	    var el = this.el;
  	    var tag = el.tagName;
  	    var handler;
  	    if (tag === 'INPUT') {
  	      handler = handlers[el.type] || handlers.text;
  	    } else if (tag === 'SELECT') {
  	      handler = handlers.select;
  	    } else if (tag === 'TEXTAREA') {
  	      handler = handlers.text;
  	    } else {
  	      process.env.NODE_ENV !== 'production' && warn('v-model does not support element type: ' + tag, this.vm);
  	      return;
  	    }
  	    el.__v_model = this;
  	    handler.bind.call(this);
  	    this.update = handler.update;
  	    this._unbind = handler.unbind;
  	  },
  
  	  /**
  	   * Check read/write filter stats.
  	   */
  
  	  checkFilters: function checkFilters() {
  	    var filters = this.filters;
  	    if (!filters) return;
  	    var i = filters.length;
  	    while (i--) {
  	      var filter = resolveAsset(this.vm.$options, 'filters', filters[i].name);
  	      if (typeof filter === 'function' || filter.read) {
  	        this.hasRead = true;
  	      }
  	      if (filter.write) {
  	        this.hasWrite = true;
  	      }
  	    }
  	  },
  
  	  unbind: function unbind() {
  	    this.el.__v_model = null;
  	    this._unbind && this._unbind();
  	  }
  	};
  
  	// keyCode aliases
  	var keyCodes = {
  	  esc: 27,
  	  tab: 9,
  	  enter: 13,
  	  space: 32,
  	  'delete': [8, 46],
  	  up: 38,
  	  left: 37,
  	  right: 39,
  	  down: 40
  	};
  
  	function keyFilter(handler, keys) {
  	  var codes = keys.map(function (key) {
  	    var charCode = key.charCodeAt(0);
  	    if (charCode > 47 && charCode < 58) {
  	      return parseInt(key, 10);
  	    }
  	    if (key.length === 1) {
  	      charCode = key.toUpperCase().charCodeAt(0);
  	      if (charCode > 64 && charCode < 91) {
  	        return charCode;
  	      }
  	    }
  	    return keyCodes[key];
  	  });
  	  codes = [].concat.apply([], codes);
  	  return function keyHandler(e) {
  	    if (codes.indexOf(e.keyCode) > -1) {
  	      return handler.call(this, e);
  	    }
  	  };
  	}
  
  	function stopFilter(handler) {
  	  return function stopHandler(e) {
  	    e.stopPropagation();
  	    return handler.call(this, e);
  	  };
  	}
  
  	function preventFilter(handler) {
  	  return function preventHandler(e) {
  	    e.preventDefault();
  	    return handler.call(this, e);
  	  };
  	}
  
  	function selfFilter(handler) {
  	  return function selfHandler(e) {
  	    if (e.target === e.currentTarget) {
  	      return handler.call(this, e);
  	    }
  	  };
  	}
  
  	var on$1 = {
  
  	  priority: ON,
  	  acceptStatement: true,
  	  keyCodes: keyCodes,
  
  	  bind: function bind() {
  	    // deal with iframes
  	    if (this.el.tagName === 'IFRAME' && this.arg !== 'load') {
  	      var self = this;
  	      this.iframeBind = function () {
  	        on(self.el.contentWindow, self.arg, self.handler, self.modifiers.capture);
  	      };
  	      this.on('load', this.iframeBind);
  	    }
  	  },
  
  	  update: function update(handler) {
  	    // stub a noop for v-on with no value,
  	    // e.g. @mousedown.prevent
  	    if (!this.descriptor.raw) {
  	      handler = function () {};
  	    }
  
  	    if (typeof handler !== 'function') {
  	      process.env.NODE_ENV !== 'production' && warn('v-on:' + this.arg + '="' + this.expression + '" expects a function value, ' + 'got ' + handler, this.vm);
  	      return;
  	    }
  
  	    // apply modifiers
  	    if (this.modifiers.stop) {
  	      handler = stopFilter(handler);
  	    }
  	    if (this.modifiers.prevent) {
  	      handler = preventFilter(handler);
  	    }
  	    if (this.modifiers.self) {
  	      handler = selfFilter(handler);
  	    }
  	    // key filter
  	    var keys = Object.keys(this.modifiers).filter(function (key) {
  	      return key !== 'stop' && key !== 'prevent' && key !== 'self' && key !== 'capture';
  	    });
  	    if (keys.length) {
  	      handler = keyFilter(handler, keys);
  	    }
  
  	    this.reset();
  	    this.handler = handler;
  
  	    if (this.iframeBind) {
  	      this.iframeBind();
  	    } else {
  	      on(this.el, this.arg, this.handler, this.modifiers.capture);
  	    }
  	  },
  
  	  reset: function reset() {
  	    var el = this.iframeBind ? this.el.contentWindow : this.el;
  	    if (this.handler) {
  	      off(el, this.arg, this.handler);
  	    }
  	  },
  
  	  unbind: function unbind() {
  	    this.reset();
  	  }
  	};
  
  	var prefixes = ['-webkit-', '-moz-', '-ms-'];
  	var camelPrefixes = ['Webkit', 'Moz', 'ms'];
  	var importantRE = /!important;?$/;
  	var propCache = Object.create(null);
  
  	var testEl = null;
  
  	var style = {
  
  	  deep: true,
  
  	  update: function update(value) {
  	    if (typeof value === 'string') {
  	      this.el.style.cssText = value;
  	    } else if (isArray(value)) {
  	      this.handleObject(value.reduce(extend, {}));
  	    } else {
  	      this.handleObject(value || {});
  	    }
  	  },
  
  	  handleObject: function handleObject(value) {
  	    // cache object styles so that only changed props
  	    // are actually updated.
  	    var cache = this.cache || (this.cache = {});
  	    var name, val;
  	    for (name in cache) {
  	      if (!(name in value)) {
  	        this.handleSingle(name, null);
  	        delete cache[name];
  	      }
  	    }
  	    for (name in value) {
  	      val = value[name];
  	      if (val !== cache[name]) {
  	        cache[name] = val;
  	        this.handleSingle(name, val);
  	      }
  	    }
  	  },
  
  	  handleSingle: function handleSingle(prop, value) {
  	    prop = normalize(prop);
  	    if (!prop) return; // unsupported prop
  	    // cast possible numbers/booleans into strings
  	    if (value != null) value += '';
  	    if (value) {
  	      var isImportant = importantRE.test(value) ? 'important' : '';
  	      if (isImportant) {
  	        /* istanbul ignore if */
  	        if (process.env.NODE_ENV !== 'production') {
  	          warn('It\'s probably a bad idea to use !important with inline rules. ' + 'This feature will be deprecated in a future version of Vue.');
  	        }
  	        value = value.replace(importantRE, '').trim();
  	        this.el.style.setProperty(prop.kebab, value, isImportant);
  	      } else {
  	        this.el.style[prop.camel] = value;
  	      }
  	    } else {
  	      this.el.style[prop.camel] = '';
  	    }
  	  }
  
  	};
  
  	/**
  	 * Normalize a CSS property name.
  	 * - cache result
  	 * - auto prefix
  	 * - camelCase -> dash-case
  	 *
  	 * @param {String} prop
  	 * @return {String}
  	 */
  
  	function normalize(prop) {
  	  if (propCache[prop]) {
  	    return propCache[prop];
  	  }
  	  var res = prefix(prop);
  	  propCache[prop] = propCache[res] = res;
  	  return res;
  	}
  
  	/**
  	 * Auto detect the appropriate prefix for a CSS property.
  	 * https://gist.github.com/paulirish/523692
  	 *
  	 * @param {String} prop
  	 * @return {String}
  	 */
  
  	function prefix(prop) {
  	  prop = hyphenate(prop);
  	  var camel = camelize(prop);
  	  var upper = camel.charAt(0).toUpperCase() + camel.slice(1);
  	  if (!testEl) {
  	    testEl = document.createElement('div');
  	  }
  	  var i = prefixes.length;
  	  var prefixed;
  	  if (camel !== 'filter' && camel in testEl.style) {
  	    return {
  	      kebab: prop,
  	      camel: camel
  	    };
  	  }
  	  while (i--) {
  	    prefixed = camelPrefixes[i] + upper;
  	    if (prefixed in testEl.style) {
  	      return {
  	        kebab: prefixes[i] + prop,
  	        camel: prefixed
  	      };
  	    }
  	  }
  	}
  
  	// xlink
  	var xlinkNS = 'http://www.w3.org/1999/xlink';
  	var xlinkRE = /^xlink:/;
  
  	// check for attributes that prohibit interpolations
  	var disallowedInterpAttrRE = /^v-|^:|^@|^(?:is|transition|transition-mode|debounce|track-by|stagger|enter-stagger|leave-stagger)$/;
  	// these attributes should also set their corresponding properties
  	// because they only affect the initial state of the element
  	var attrWithPropsRE = /^(?:value|checked|selected|muted)$/;
  	// these attributes expect enumrated values of "true" or "false"
  	// but are not boolean attributes
  	var enumeratedAttrRE = /^(?:draggable|contenteditable|spellcheck)$/;
  
  	// these attributes should set a hidden property for
  	// binding v-model to object values
  	var modelProps = {
  	  value: '_value',
  	  'true-value': '_trueValue',
  	  'false-value': '_falseValue'
  	};
  
  	var bind$1 = {
  
  	  priority: BIND,
  
  	  bind: function bind() {
  	    var attr = this.arg;
  	    var tag = this.el.tagName;
  	    // should be deep watch on object mode
  	    if (!attr) {
  	      this.deep = true;
  	    }
  	    // handle interpolation bindings
  	    var descriptor = this.descriptor;
  	    var tokens = descriptor.interp;
  	    if (tokens) {
  	      // handle interpolations with one-time tokens
  	      if (descriptor.hasOneTime) {
  	        this.expression = tokensToExp(tokens, this._scope || this.vm);
  	      }
  
  	      // only allow binding on native attributes
  	      if (disallowedInterpAttrRE.test(attr) || attr === 'name' && (tag === 'PARTIAL' || tag === 'SLOT')) {
  	        process.env.NODE_ENV !== 'production' && warn(attr + '="' + descriptor.raw + '": ' + 'attribute interpolation is not allowed in Vue.js ' + 'directives and special attributes.', this.vm);
  	        this.el.removeAttribute(attr);
  	        this.invalid = true;
  	      }
  
  	      /* istanbul ignore if */
  	      if (process.env.NODE_ENV !== 'production') {
  	        var raw = attr + '="' + descriptor.raw + '": ';
  	        // warn src
  	        if (attr === 'src') {
  	          warn(raw + 'interpolation in "src" attribute will cause ' + 'a 404 request. Use v-bind:src instead.', this.vm);
  	        }
  
  	        // warn style
  	        if (attr === 'style') {
  	          warn(raw + 'interpolation in "style" attribute will cause ' + 'the attribute to be discarded in Internet Explorer. ' + 'Use v-bind:style instead.', this.vm);
  	        }
  	      }
  	    }
  	  },
  
  	  update: function update(value) {
  	    if (this.invalid) {
  	      return;
  	    }
  	    var attr = this.arg;
  	    if (this.arg) {
  	      this.handleSingle(attr, value);
  	    } else {
  	      this.handleObject(value || {});
  	    }
  	  },
  
  	  // share object handler with v-bind:class
  	  handleObject: style.handleObject,
  
  	  handleSingle: function handleSingle(attr, value) {
  	    var el = this.el;
  	    var interp = this.descriptor.interp;
  	    if (this.modifiers.camel) {
  	      attr = camelize(attr);
  	    }
  	    if (!interp && attrWithPropsRE.test(attr) && attr in el) {
  	      var attrValue = attr === 'value' ? value == null // IE9 will set input.value to "null" for null...
  	      ? '' : value : value;
  
  	      if (el[attr] !== attrValue) {
  	        el[attr] = attrValue;
  	      }
  	    }
  	    // set model props
  	    var modelProp = modelProps[attr];
  	    if (!interp && modelProp) {
  	      el[modelProp] = value;
  	      // update v-model if present
  	      var model = el.__v_model;
  	      if (model) {
  	        model.listener();
  	      }
  	    }
  	    // do not set value attribute for textarea
  	    if (attr === 'value' && el.tagName === 'TEXTAREA') {
  	      el.removeAttribute(attr);
  	      return;
  	    }
  	    // update attribute
  	    if (enumeratedAttrRE.test(attr)) {
  	      el.setAttribute(attr, value ? 'true' : 'false');
  	    } else if (value != null && value !== false) {
  	      if (attr === 'class') {
  	        // handle edge case #1960:
  	        // class interpolation should not overwrite Vue transition class
  	        if (el.__v_trans) {
  	          value += ' ' + el.__v_trans.id + '-transition';
  	        }
  	        setClass(el, value);
  	      } else if (xlinkRE.test(attr)) {
  	        el.setAttributeNS(xlinkNS, attr, value === true ? '' : value);
  	      } else {
  	        el.setAttribute(attr, value === true ? '' : value);
  	      }
  	    } else {
  	      el.removeAttribute(attr);
  	    }
  	  }
  	};
  
  	var el = {
  
  	  priority: EL,
  
  	  bind: function bind() {
  	    /* istanbul ignore if */
  	    if (!this.arg) {
  	      return;
  	    }
  	    var id = this.id = camelize(this.arg);
  	    var refs = (this._scope || this.vm).$els;
  	    if (hasOwn(refs, id)) {
  	      refs[id] = this.el;
  	    } else {
  	      defineReactive(refs, id, this.el);
  	    }
  	  },
  
  	  unbind: function unbind() {
  	    var refs = (this._scope || this.vm).$els;
  	    if (refs[this.id] === this.el) {
  	      refs[this.id] = null;
  	    }
  	  }
  	};
  
  	var ref = {
  	  bind: function bind() {
  	    process.env.NODE_ENV !== 'production' && warn('v-ref:' + this.arg + ' must be used on a child ' + 'component. Found on <' + this.el.tagName.toLowerCase() + '>.', this.vm);
  	  }
  	};
  
  	var cloak = {
  	  bind: function bind() {
  	    var el = this.el;
  	    this.vm.$once('pre-hook:compiled', function () {
  	      el.removeAttribute('v-cloak');
  	    });
  	  }
  	};
  
  	// must export plain object
  	var directives = {
  	  text: text$1,
  	  html: html,
  	  'for': vFor,
  	  'if': vIf,
  	  show: show,
  	  model: model,
  	  on: on$1,
  	  bind: bind$1,
  	  el: el,
  	  ref: ref,
  	  cloak: cloak
  	};
  
  	var vClass = {
  
  	  deep: true,
  
  	  update: function update(value) {
  	    if (!value) {
  	      this.cleanup();
  	    } else if (typeof value === 'string') {
  	      this.setClass(value.trim().split(/\s+/));
  	    } else {
  	      this.setClass(normalize$1(value));
  	    }
  	  },
  
  	  setClass: function setClass(value) {
  	    this.cleanup(value);
  	    for (var i = 0, l = value.length; i < l; i++) {
  	      var val = value[i];
  	      if (val) {
  	        apply(this.el, val, addClass);
  	      }
  	    }
  	    this.prevKeys = value;
  	  },
  
  	  cleanup: function cleanup(value) {
  	    var prevKeys = this.prevKeys;
  	    if (!prevKeys) return;
  	    var i = prevKeys.length;
  	    while (i--) {
  	      var key = prevKeys[i];
  	      if (!value || value.indexOf(key) < 0) {
  	        apply(this.el, key, removeClass);
  	      }
  	    }
  	  }
  	};
  
  	/**
  	 * Normalize objects and arrays (potentially containing objects)
  	 * into array of strings.
  	 *
  	 * @param {Object|Array<String|Object>} value
  	 * @return {Array<String>}
  	 */
  
  	function normalize$1(value) {
  	  var res = [];
  	  if (isArray(value)) {
  	    for (var i = 0, l = value.length; i < l; i++) {
  	      var _key = value[i];
  	      if (_key) {
  	        if (typeof _key === 'string') {
  	          res.push(_key);
  	        } else {
  	          for (var k in _key) {
  	            if (_key[k]) res.push(k);
  	          }
  	        }
  	      }
  	    }
  	  } else if (isObject(value)) {
  	    for (var key in value) {
  	      if (value[key]) res.push(key);
  	    }
  	  }
  	  return res;
  	}
  
  	/**
  	 * Add or remove a class/classes on an element
  	 *
  	 * @param {Element} el
  	 * @param {String} key The class name. This may or may not
  	 *                     contain a space character, in such a
  	 *                     case we'll deal with multiple class
  	 *                     names at once.
  	 * @param {Function} fn
  	 */
  
  	function apply(el, key, fn) {
  	  key = key.trim();
  	  if (key.indexOf(' ') === -1) {
  	    fn(el, key);
  	    return;
  	  }
  	  // The key contains one or more space characters.
  	  // Since a class name doesn't accept such characters, we
  	  // treat it as multiple classes.
  	  var keys = key.split(/\s+/);
  	  for (var i = 0, l = keys.length; i < l; i++) {
  	    fn(el, keys[i]);
  	  }
  	}
  
  	var component = {
  
  	  priority: COMPONENT,
  
  	  params: ['keep-alive', 'transition-mode', 'inline-template'],
  
  	  /**
  	   * Setup. Two possible usages:
  	   *
  	   * - static:
  	   *   <comp> or <div v-component="comp">
  	   *
  	   * - dynamic:
  	   *   <component :is="view">
  	   */
  
  	  bind: function bind() {
  	    if (!this.el.__vue__) {
  	      // keep-alive cache
  	      this.keepAlive = this.params.keepAlive;
  	      if (this.keepAlive) {
  	        this.cache = {};
  	      }
  	      // check inline-template
  	      if (this.params.inlineTemplate) {
  	        // extract inline template as a DocumentFragment
  	        this.inlineTemplate = extractContent(this.el, true);
  	      }
  	      // component resolution related state
  	      this.pendingComponentCb = this.Component = null;
  	      // transition related state
  	      this.pendingRemovals = 0;
  	      this.pendingRemovalCb = null;
  	      // create a ref anchor
  	      this.anchor = createAnchor('v-component');
  	      replace(this.el, this.anchor);
  	      // remove is attribute.
  	      // this is removed during compilation, but because compilation is
  	      // cached, when the component is used elsewhere this attribute
  	      // will remain at link time.
  	      this.el.removeAttribute('is');
  	      this.el.removeAttribute(':is');
  	      // remove ref, same as above
  	      if (this.descriptor.ref) {
  	        this.el.removeAttribute('v-ref:' + hyphenate(this.descriptor.ref));
  	      }
  	      // if static, build right now.
  	      if (this.literal) {
  	        this.setComponent(this.expression);
  	      }
  	    } else {
  	      process.env.NODE_ENV !== 'production' && warn('cannot mount component "' + this.expression + '" ' + 'on already mounted element: ' + this.el);
  	    }
  	  },
  
  	  /**
  	   * Public update, called by the watcher in the dynamic
  	   * literal scenario, e.g. <component :is="view">
  	   */
  
  	  update: function update(value) {
  	    if (!this.literal) {
  	      this.setComponent(value);
  	    }
  	  },
  
  	  /**
  	   * Switch dynamic components. May resolve the component
  	   * asynchronously, and perform transition based on
  	   * specified transition mode. Accepts a few additional
  	   * arguments specifically for vue-router.
  	   *
  	   * The callback is called when the full transition is
  	   * finished.
  	   *
  	   * @param {String} value
  	   * @param {Function} [cb]
  	   */
  
  	  setComponent: function setComponent(value, cb) {
  	    this.invalidatePending();
  	    if (!value) {
  	      // just remove current
  	      this.unbuild(true);
  	      this.remove(this.childVM, cb);
  	      this.childVM = null;
  	    } else {
  	      var self = this;
  	      this.resolveComponent(value, function () {
  	        self.mountComponent(cb);
  	      });
  	    }
  	  },
  
  	  /**
  	   * Resolve the component constructor to use when creating
  	   * the child vm.
  	   *
  	   * @param {String|Function} value
  	   * @param {Function} cb
  	   */
  
  	  resolveComponent: function resolveComponent(value, cb) {
  	    var self = this;
  	    this.pendingComponentCb = cancellable(function (Component) {
  	      self.ComponentName = Component.options.name || (typeof value === 'string' ? value : null);
  	      self.Component = Component;
  	      cb();
  	    });
  	    this.vm._resolveComponent(value, this.pendingComponentCb);
  	  },
  
  	  /**
  	   * Create a new instance using the current constructor and
  	   * replace the existing instance. This method doesn't care
  	   * whether the new component and the old one are actually
  	   * the same.
  	   *
  	   * @param {Function} [cb]
  	   */
  
  	  mountComponent: function mountComponent(cb) {
  	    // actual mount
  	    this.unbuild(true);
  	    var self = this;
  	    var activateHooks = this.Component.options.activate;
  	    var cached = this.getCached();
  	    var newComponent = this.build();
  	    if (activateHooks && !cached) {
  	      this.waitingFor = newComponent;
  	      callActivateHooks(activateHooks, newComponent, function () {
  	        if (self.waitingFor !== newComponent) {
  	          return;
  	        }
  	        self.waitingFor = null;
  	        self.transition(newComponent, cb);
  	      });
  	    } else {
  	      // update ref for kept-alive component
  	      if (cached) {
  	        newComponent._updateRef();
  	      }
  	      this.transition(newComponent, cb);
  	    }
  	  },
  
  	  /**
  	   * When the component changes or unbinds before an async
  	   * constructor is resolved, we need to invalidate its
  	   * pending callback.
  	   */
  
  	  invalidatePending: function invalidatePending() {
  	    if (this.pendingComponentCb) {
  	      this.pendingComponentCb.cancel();
  	      this.pendingComponentCb = null;
  	    }
  	  },
  
  	  /**
  	   * Instantiate/insert a new child vm.
  	   * If keep alive and has cached instance, insert that
  	   * instance; otherwise build a new one and cache it.
  	   *
  	   * @param {Object} [extraOptions]
  	   * @return {Vue} - the created instance
  	   */
  
  	  build: function build(extraOptions) {
  	    var cached = this.getCached();
  	    if (cached) {
  	      return cached;
  	    }
  	    if (this.Component) {
  	      // default options
  	      var options = {
  	        name: this.ComponentName,
  	        el: cloneNode(this.el),
  	        template: this.inlineTemplate,
  	        // make sure to add the child with correct parent
  	        // if this is a transcluded component, its parent
  	        // should be the transclusion host.
  	        parent: this._host || this.vm,
  	        // if no inline-template, then the compiled
  	        // linker can be cached for better performance.
  	        _linkerCachable: !this.inlineTemplate,
  	        _ref: this.descriptor.ref,
  	        _asComponent: true,
  	        _isRouterView: this._isRouterView,
  	        // if this is a transcluded component, context
  	        // will be the common parent vm of this instance
  	        // and its host.
  	        _context: this.vm,
  	        // if this is inside an inline v-for, the scope
  	        // will be the intermediate scope created for this
  	        // repeat fragment. this is used for linking props
  	        // and container directives.
  	        _scope: this._scope,
  	        // pass in the owner fragment of this component.
  	        // this is necessary so that the fragment can keep
  	        // track of its contained components in order to
  	        // call attach/detach hooks for them.
  	        _frag: this._frag
  	      };
  	      // extra options
  	      // in 1.0.0 this is used by vue-router only
  	      /* istanbul ignore if */
  	      if (extraOptions) {
  	        extend(options, extraOptions);
  	      }
  	      var child = new this.Component(options);
  	      if (this.keepAlive) {
  	        this.cache[this.Component.cid] = child;
  	      }
  	      /* istanbul ignore if */
  	      if (process.env.NODE_ENV !== 'production' && this.el.hasAttribute('transition') && child._isFragment) {
  	        warn('Transitions will not work on a fragment instance. ' + 'Template: ' + child.$options.template, child);
  	      }
  	      return child;
  	    }
  	  },
  
  	  /**
  	   * Try to get a cached instance of the current component.
  	   *
  	   * @return {Vue|undefined}
  	   */
  
  	  getCached: function getCached() {
  	    return this.keepAlive && this.cache[this.Component.cid];
  	  },
  
  	  /**
  	   * Teardown the current child, but defers cleanup so
  	   * that we can separate the destroy and removal steps.
  	   *
  	   * @param {Boolean} defer
  	   */
  
  	  unbuild: function unbuild(defer) {
  	    if (this.waitingFor) {
  	      if (!this.keepAlive) {
  	        this.waitingFor.$destroy();
  	      }
  	      this.waitingFor = null;
  	    }
  	    var child = this.childVM;
  	    if (!child || this.keepAlive) {
  	      if (child) {
  	        // remove ref
  	        child._inactive = true;
  	        child._updateRef(true);
  	      }
  	      return;
  	    }
  	    // the sole purpose of `deferCleanup` is so that we can
  	    // "deactivate" the vm right now and perform DOM removal
  	    // later.
  	    child.$destroy(false, defer);
  	  },
  
  	  /**
  	   * Remove current destroyed child and manually do
  	   * the cleanup after removal.
  	   *
  	   * @param {Function} cb
  	   */
  
  	  remove: function remove(child, cb) {
  	    var keepAlive = this.keepAlive;
  	    if (child) {
  	      // we may have a component switch when a previous
  	      // component is still being transitioned out.
  	      // we want to trigger only one lastest insertion cb
  	      // when the existing transition finishes. (#1119)
  	      this.pendingRemovals++;
  	      this.pendingRemovalCb = cb;
  	      var self = this;
  	      child.$remove(function () {
  	        self.pendingRemovals--;
  	        if (!keepAlive) child._cleanup();
  	        if (!self.pendingRemovals && self.pendingRemovalCb) {
  	          self.pendingRemovalCb();
  	          self.pendingRemovalCb = null;
  	        }
  	      });
  	    } else if (cb) {
  	      cb();
  	    }
  	  },
  
  	  /**
  	   * Actually swap the components, depending on the
  	   * transition mode. Defaults to simultaneous.
  	   *
  	   * @param {Vue} target
  	   * @param {Function} [cb]
  	   */
  
  	  transition: function transition(target, cb) {
  	    var self = this;
  	    var current = this.childVM;
  	    // for devtool inspection
  	    if (current) current._inactive = true;
  	    target._inactive = false;
  	    this.childVM = target;
  	    switch (self.params.transitionMode) {
  	      case 'in-out':
  	        target.$before(self.anchor, function () {
  	          self.remove(current, cb);
  	        });
  	        break;
  	      case 'out-in':
  	        self.remove(current, function () {
  	          target.$before(self.anchor, cb);
  	        });
  	        break;
  	      default:
  	        self.remove(current);
  	        target.$before(self.anchor, cb);
  	    }
  	  },
  
  	  /**
  	   * Unbind.
  	   */
  
  	  unbind: function unbind() {
  	    this.invalidatePending();
  	    // Do not defer cleanup when unbinding
  	    this.unbuild();
  	    // destroy all keep-alive cached instances
  	    if (this.cache) {
  	      for (var key in this.cache) {
  	        this.cache[key].$destroy();
  	      }
  	      this.cache = null;
  	    }
  	  }
  	};
  
  	/**
  	 * Call activate hooks in order (asynchronous)
  	 *
  	 * @param {Array} hooks
  	 * @param {Vue} vm
  	 * @param {Function} cb
  	 */
  
  	function callActivateHooks(hooks, vm, cb) {
  	  var total = hooks.length;
  	  var called = 0;
  	  hooks[0].call(vm, next);
  	  function next() {
  	    if (++called >= total) {
  	      cb();
  	    } else {
  	      hooks[called].call(vm, next);
  	    }
  	  }
  	}
  
  	var propBindingModes = config._propBindingModes;
  	var empty = {};
  
  	// regexes
  	var identRE$1 = /^[$_a-zA-Z]+[\w$]*$/;
  	var settablePathRE = /^[A-Za-z_$][\w$]*(\.[A-Za-z_$][\w$]*|\[[^\[\]]+\])*$/;
  
  	/**
  	 * Compile props on a root element and return
  	 * a props link function.
  	 *
  	 * @param {Element|DocumentFragment} el
  	 * @param {Array} propOptions
  	 * @param {Vue} vm
  	 * @return {Function} propsLinkFn
  	 */
  
  	function compileProps(el, propOptions, vm) {
  	  var props = [];
  	  var names = Object.keys(propOptions);
  	  var i = names.length;
  	  var options, name, attr, value, path, parsed, prop;
  	  while (i--) {
  	    name = names[i];
  	    options = propOptions[name] || empty;
  
  	    if (process.env.NODE_ENV !== 'production' && name === '$data') {
  	      warn('Do not use $data as prop.', vm);
  	      continue;
  	    }
  
  	    // props could contain dashes, which will be
  	    // interpreted as minus calculations by the parser
  	    // so we need to camelize the path here
  	    path = camelize(name);
  	    if (!identRE$1.test(path)) {
  	      process.env.NODE_ENV !== 'production' && warn('Invalid prop key: "' + name + '". Prop keys ' + 'must be valid identifiers.', vm);
  	      continue;
  	    }
  
  	    prop = {
  	      name: name,
  	      path: path,
  	      options: options,
  	      mode: propBindingModes.ONE_WAY,
  	      raw: null
  	    };
  
  	    attr = hyphenate(name);
  	    // first check dynamic version
  	    if ((value = getBindAttr(el, attr)) === null) {
  	      if ((value = getBindAttr(el, attr + '.sync')) !== null) {
  	        prop.mode = propBindingModes.TWO_WAY;
  	      } else if ((value = getBindAttr(el, attr + '.once')) !== null) {
  	        prop.mode = propBindingModes.ONE_TIME;
  	      }
  	    }
  	    if (value !== null) {
  	      // has dynamic binding!
  	      prop.raw = value;
  	      parsed = parseDirective(value);
  	      value = parsed.expression;
  	      prop.filters = parsed.filters;
  	      // check binding type
  	      if (isLiteral(value) && !parsed.filters) {
  	        // for expressions containing literal numbers and
  	        // booleans, there's no need to setup a prop binding,
  	        // so we can optimize them as a one-time set.
  	        prop.optimizedLiteral = true;
  	      } else {
  	        prop.dynamic = true;
  	        // check non-settable path for two-way bindings
  	        if (process.env.NODE_ENV !== 'production' && prop.mode === propBindingModes.TWO_WAY && !settablePathRE.test(value)) {
  	          prop.mode = propBindingModes.ONE_WAY;
  	          warn('Cannot bind two-way prop with non-settable ' + 'parent path: ' + value, vm);
  	        }
  	      }
  	      prop.parentPath = value;
  
  	      // warn required two-way
  	      if (process.env.NODE_ENV !== 'production' && options.twoWay && prop.mode !== propBindingModes.TWO_WAY) {
  	        warn('Prop "' + name + '" expects a two-way binding type.', vm);
  	      }
  	    } else if ((value = getAttr(el, attr)) !== null) {
  	      // has literal binding!
  	      prop.raw = value;
  	    } else if (process.env.NODE_ENV !== 'production') {
  	      // check possible camelCase prop usage
  	      var lowerCaseName = path.toLowerCase();
  	      value = /[A-Z\-]/.test(name) && (el.getAttribute(lowerCaseName) || el.getAttribute(':' + lowerCaseName) || el.getAttribute('v-bind:' + lowerCaseName) || el.getAttribute(':' + lowerCaseName + '.once') || el.getAttribute('v-bind:' + lowerCaseName + '.once') || el.getAttribute(':' + lowerCaseName + '.sync') || el.getAttribute('v-bind:' + lowerCaseName + '.sync'));
  	      if (value) {
  	        warn('Possible usage error for prop `' + lowerCaseName + '` - ' + 'did you mean `' + attr + '`? HTML is case-insensitive, remember to use ' + 'kebab-case for props in templates.', vm);
  	      } else if (options.required) {
  	        // warn missing required
  	        warn('Missing required prop: ' + name, vm);
  	      }
  	    }
  	    // push prop
  	    props.push(prop);
  	  }
  	  return makePropsLinkFn(props);
  	}
  
  	/**
  	 * Build a function that applies props to a vm.
  	 *
  	 * @param {Array} props
  	 * @return {Function} propsLinkFn
  	 */
  
  	function makePropsLinkFn(props) {
  	  return function propsLinkFn(vm, scope) {
  	    // store resolved props info
  	    vm._props = {};
  	    var inlineProps = vm.$options.propsData;
  	    var i = props.length;
  	    var prop, path, options, value, raw;
  	    while (i--) {
  	      prop = props[i];
  	      raw = prop.raw;
  	      path = prop.path;
  	      options = prop.options;
  	      vm._props[path] = prop;
  	      if (inlineProps && hasOwn(inlineProps, path)) {
  	        initProp(vm, prop, inlineProps[path]);
  	      }if (raw === null) {
  	        // initialize absent prop
  	        initProp(vm, prop, undefined);
  	      } else if (prop.dynamic) {
  	        // dynamic prop
  	        if (prop.mode === propBindingModes.ONE_TIME) {
  	          // one time binding
  	          value = (scope || vm._context || vm).$get(prop.parentPath);
  	          initProp(vm, prop, value);
  	        } else {
  	          if (vm._context) {
  	            // dynamic binding
  	            vm._bindDir({
  	              name: 'prop',
  	              def: propDef,
  	              prop: prop
  	            }, null, null, scope); // el, host, scope
  	          } else {
  	              // root instance
  	              initProp(vm, prop, vm.$get(prop.parentPath));
  	            }
  	        }
  	      } else if (prop.optimizedLiteral) {
  	        // optimized literal, cast it and just set once
  	        var stripped = stripQuotes(raw);
  	        value = stripped === raw ? toBoolean(toNumber(raw)) : stripped;
  	        initProp(vm, prop, value);
  	      } else {
  	        // string literal, but we need to cater for
  	        // Boolean props with no value, or with same
  	        // literal value (e.g. disabled="disabled")
  	        // see https://github.com/vuejs/vue-loader/issues/182
  	        value = options.type === Boolean && (raw === '' || raw === hyphenate(prop.name)) ? true : raw;
  	        initProp(vm, prop, value);
  	      }
  	    }
  	  };
  	}
  
  	/**
  	 * Process a prop with a rawValue, applying necessary coersions,
  	 * default values & assertions and call the given callback with
  	 * processed value.
  	 *
  	 * @param {Vue} vm
  	 * @param {Object} prop
  	 * @param {*} rawValue
  	 * @param {Function} fn
  	 */
  
  	function processPropValue(vm, prop, rawValue, fn) {
  	  var isSimple = prop.dynamic && isSimplePath(prop.parentPath);
  	  var value = rawValue;
  	  if (value === undefined) {
  	    value = getPropDefaultValue(vm, prop);
  	  }
  	  value = coerceProp(prop, value);
  	  var coerced = value !== rawValue;
  	  if (!assertProp(prop, value, vm)) {
  	    value = undefined;
  	  }
  	  if (isSimple && !coerced) {
  	    withoutConversion(function () {
  	      fn(value);
  	    });
  	  } else {
  	    fn(value);
  	  }
  	}
  
  	/**
  	 * Set a prop's initial value on a vm and its data object.
  	 *
  	 * @param {Vue} vm
  	 * @param {Object} prop
  	 * @param {*} value
  	 */
  
  	function initProp(vm, prop, value) {
  	  processPropValue(vm, prop, value, function (value) {
  	    defineReactive(vm, prop.path, value);
  	  });
  	}
  
  	/**
  	 * Update a prop's value on a vm.
  	 *
  	 * @param {Vue} vm
  	 * @param {Object} prop
  	 * @param {*} value
  	 */
  
  	function updateProp(vm, prop, value) {
  	  processPropValue(vm, prop, value, function (value) {
  	    vm[prop.path] = value;
  	  });
  	}
  
  	/**
  	 * Get the default value of a prop.
  	 *
  	 * @param {Vue} vm
  	 * @param {Object} prop
  	 * @return {*}
  	 */
  
  	function getPropDefaultValue(vm, prop) {
  	  // no default, return undefined
  	  var options = prop.options;
  	  if (!hasOwn(options, 'default')) {
  	    // absent boolean value defaults to false
  	    return options.type === Boolean ? false : undefined;
  	  }
  	  var def = options['default'];
  	  // warn against non-factory defaults for Object & Array
  	  if (isObject(def)) {
  	    process.env.NODE_ENV !== 'production' && warn('Invalid default value for prop "' + prop.name + '": ' + 'Props with type Object/Array must use a factory function ' + 'to return the default value.', vm);
  	  }
  	  // call factory function for non-Function types
  	  return typeof def === 'function' && options.type !== Function ? def.call(vm) : def;
  	}
  
  	/**
  	 * Assert whether a prop is valid.
  	 *
  	 * @param {Object} prop
  	 * @param {*} value
  	 * @param {Vue} vm
  	 */
  
  	function assertProp(prop, value, vm) {
  	  if (!prop.options.required && ( // non-required
  	  prop.raw === null || // abscent
  	  value == null) // null or undefined
  	  ) {
  	      return true;
  	    }
  	  var options = prop.options;
  	  var type = options.type;
  	  var valid = !type;
  	  var expectedTypes = [];
  	  if (type) {
  	    if (!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) {
  	    if (process.env.NODE_ENV !== 'production') {
  	      warn('Invalid prop: type check failed for prop "' + prop.name + '".' + ' Expected ' + expectedTypes.map(formatType).join(', ') + ', got ' + formatValue(value) + '.', vm);
  	    }
  	    return false;
  	  }
  	  var validator = options.validator;
  	  if (validator) {
  	    if (!validator(value)) {
  	      process.env.NODE_ENV !== 'production' && warn('Invalid prop: custom validator check failed for prop "' + prop.name + '".', vm);
  	      return false;
  	    }
  	  }
  	  return true;
  	}
  
  	/**
  	 * Force parsing value with coerce option.
  	 *
  	 * @param {*} value
  	 * @param {Object} options
  	 * @return {*}
  	 */
  
  	function coerceProp(prop, value) {
  	  var coerce = prop.options.coerce;
  	  if (!coerce) {
  	    return value;
  	  }
  	  // coerce is a function
  	  return coerce(value);
  	}
  
  	/**
  	 * Assert the type of a value
  	 *
  	 * @param {*} value
  	 * @param {Function} type
  	 * @return {Object}
  	 */
  
  	function assertType(value, type) {
  	  var valid;
  	  var expectedType;
  	  if (type === String) {
  	    expectedType = 'string';
  	    valid = typeof value === expectedType;
  	  } else if (type === Number) {
  	    expectedType = 'number';
  	    valid = typeof value === expectedType;
  	  } else if (type === Boolean) {
  	    expectedType = 'boolean';
  	    valid = typeof value === expectedType;
  	  } else if (type === Function) {
  	    expectedType = 'function';
  	    valid = typeof value === expectedType;
  	  } else if (type === Object) {
  	    expectedType = 'object';
  	    valid = isPlainObject(value);
  	  } else if (type === Array) {
  	    expectedType = 'array';
  	    valid = isArray(value);
  	  } else {
  	    valid = value instanceof type;
  	  }
  	  return {
  	    valid: valid,
  	    expectedType: expectedType
  	  };
  	}
  
  	/**
  	 * Format type for output
  	 *
  	 * @param {String} type
  	 * @return {String}
  	 */
  
  	function formatType(type) {
  	  return type ? type.charAt(0).toUpperCase() + type.slice(1) : 'custom type';
  	}
  
  	/**
  	 * Format value
  	 *
  	 * @param {*} value
  	 * @return {String}
  	 */
  
  	function formatValue(val) {
  	  return Object.prototype.toString.call(val).slice(8, -1);
  	}
  
  	var bindingModes = config._propBindingModes;
  
  	var propDef = {
  
  	  bind: function bind() {
  	    var child = this.vm;
  	    var parent = child._context;
  	    // passed in from compiler directly
  	    var prop = this.descriptor.prop;
  	    var childKey = prop.path;
  	    var parentKey = prop.parentPath;
  	    var twoWay = prop.mode === bindingModes.TWO_WAY;
  
  	    var parentWatcher = this.parentWatcher = new Watcher(parent, parentKey, function (val) {
  	      updateProp(child, prop, val);
  	    }, {
  	      twoWay: twoWay,
  	      filters: prop.filters,
  	      // important: props need to be observed on the
  	      // v-for scope if present
  	      scope: this._scope
  	    });
  
  	    // set the child initial value.
  	    initProp(child, prop, parentWatcher.value);
  
  	    // setup two-way binding
  	    if (twoWay) {
  	      // important: defer the child watcher creation until
  	      // the created hook (after data observation)
  	      var self = this;
  	      child.$once('pre-hook:created', function () {
  	        self.childWatcher = new Watcher(child, childKey, function (val) {
  	          parentWatcher.set(val);
  	        }, {
  	          // ensure sync upward before parent sync down.
  	          // this is necessary in cases e.g. the child
  	          // mutates a prop array, then replaces it. (#1683)
  	          sync: true
  	        });
  	      });
  	    }
  	  },
  
  	  unbind: function unbind() {
  	    this.parentWatcher.teardown();
  	    if (this.childWatcher) {
  	      this.childWatcher.teardown();
  	    }
  	  }
  	};
  
  	var queue$1 = [];
  	var queued = false;
  
  	/**
  	 * Push a job into the queue.
  	 *
  	 * @param {Function} job
  	 */
  
  	function pushJob(job) {
  	  queue$1.push(job);
  	  if (!queued) {
  	    queued = true;
  	    nextTick(flush);
  	  }
  	}
  
  	/**
  	 * Flush the queue, and do one forced reflow before
  	 * triggering transitions.
  	 */
  
  	function flush() {
  	  // Force layout
  	  var f = document.documentElement.offsetHeight;
  	  for (var i = 0; i < queue$1.length; i++) {
  	    queue$1[i]();
  	  }
  	  queue$1 = [];
  	  queued = false;
  	  // dummy return, so js linters don't complain about
  	  // unused variable f
  	  return f;
  	}
  
  	var TYPE_TRANSITION = 'transition';
  	var TYPE_ANIMATION = 'animation';
  	var transDurationProp = transitionProp + 'Duration';
  	var animDurationProp = animationProp + 'Duration';
  
  	/**
  	 * If a just-entered element is applied the
  	 * leave class while its enter transition hasn't started yet,
  	 * and the transitioned property has the same value for both
  	 * enter/leave, then the leave transition will be skipped and
  	 * the transitionend event never fires. This function ensures
  	 * its callback to be called after a transition has started
  	 * by waiting for double raf.
  	 *
  	 * It falls back to setTimeout on devices that support CSS
  	 * transitions but not raf (e.g. Android 4.2 browser) - since
  	 * these environments are usually slow, we are giving it a
  	 * relatively large timeout.
  	 */
  
  	var raf = inBrowser && window.requestAnimationFrame;
  	var waitForTransitionStart = raf
  	/* istanbul ignore next */
  	? function (fn) {
  	  raf(function () {
  	    raf(fn);
  	  });
  	} : function (fn) {
  	  setTimeout(fn, 50);
  	};
  
  	/**
  	 * A Transition object that encapsulates the state and logic
  	 * of the transition.
  	 *
  	 * @param {Element} el
  	 * @param {String} id
  	 * @param {Object} hooks
  	 * @param {Vue} vm
  	 */
  	function Transition(el, id, hooks, vm) {
  	  this.id = id;
  	  this.el = el;
  	  this.enterClass = hooks && hooks.enterClass || id + '-enter';
  	  this.leaveClass = hooks && hooks.leaveClass || id + '-leave';
  	  this.hooks = hooks;
  	  this.vm = vm;
  	  // async state
  	  this.pendingCssEvent = this.pendingCssCb = this.cancel = this.pendingJsCb = this.op = this.cb = null;
  	  this.justEntered = false;
  	  this.entered = this.left = false;
  	  this.typeCache = {};
  	  // check css transition type
  	  this.type = hooks && hooks.type;
  	  /* istanbul ignore if */
  	  if (process.env.NODE_ENV !== 'production') {
  	    if (this.type && this.type !== TYPE_TRANSITION && this.type !== TYPE_ANIMATION) {
  	      warn('invalid CSS transition type for transition="' + this.id + '": ' + this.type, vm);
  	    }
  	  }
  	  // bind
  	  var self = this;['enterNextTick', 'enterDone', 'leaveNextTick', 'leaveDone'].forEach(function (m) {
  	    self[m] = bind(self[m], self);
  	  });
  	}
  
  	var p$1 = Transition.prototype;
  
  	/**
  	 * Start an entering transition.
  	 *
  	 * 1. enter transition triggered
  	 * 2. call beforeEnter hook
  	 * 3. add enter class
  	 * 4. insert/show element
  	 * 5. call enter hook (with possible explicit js callback)
  	 * 6. reflow
  	 * 7. based on transition type:
  	 *    - transition:
  	 *        remove class now, wait for transitionend,
  	 *        then done if there's no explicit js callback.
  	 *    - animation:
  	 *        wait for animationend, remove class,
  	 *        then done if there's no explicit js callback.
  	 *    - no css transition:
  	 *        done now if there's no explicit js callback.
  	 * 8. wait for either done or js callback, then call
  	 *    afterEnter hook.
  	 *
  	 * @param {Function} op - insert/show the element
  	 * @param {Function} [cb]
  	 */
  
  	p$1.enter = function (op, cb) {
  	  this.cancelPending();
  	  this.callHook('beforeEnter');
  	  this.cb = cb;
  	  addClass(this.el, this.enterClass);
  	  op();
  	  this.entered = false;
  	  this.callHookWithCb('enter');
  	  if (this.entered) {
  	    return; // user called done synchronously.
  	  }
  	  this.cancel = this.hooks && this.hooks.enterCancelled;
  	  pushJob(this.enterNextTick);
  	};
  
  	/**
  	 * The "nextTick" phase of an entering transition, which is
  	 * to be pushed into a queue and executed after a reflow so
  	 * that removing the class can trigger a CSS transition.
  	 */
  
  	p$1.enterNextTick = function () {
  	  var _this = this;
  
  	  // prevent transition skipping
  	  this.justEntered = true;
  	  waitForTransitionStart(function () {
  	    _this.justEntered = false;
  	  });
  	  var enterDone = this.enterDone;
  	  var type = this.getCssTransitionType(this.enterClass);
  	  if (!this.pendingJsCb) {
  	    if (type === TYPE_TRANSITION) {
  	      // trigger transition by removing enter class now
  	      removeClass(this.el, this.enterClass);
  	      this.setupCssCb(transitionEndEvent, enterDone);
  	    } else if (type === TYPE_ANIMATION) {
  	      this.setupCssCb(animationEndEvent, enterDone);
  	    } else {
  	      enterDone();
  	    }
  	  } else if (type === TYPE_TRANSITION) {
  	    removeClass(this.el, this.enterClass);
  	  }
  	};
  
  	/**
  	 * The "cleanup" phase of an entering transition.
  	 */
  
  	p$1.enterDone = function () {
  	  this.entered = true;
  	  this.cancel = this.pendingJsCb = null;
  	  removeClass(this.el, this.enterClass);
  	  this.callHook('afterEnter');
  	  if (this.cb) this.cb();
  	};
  
  	/**
  	 * Start a leaving transition.
  	 *
  	 * 1. leave transition triggered.
  	 * 2. call beforeLeave hook
  	 * 3. add leave class (trigger css transition)
  	 * 4. call leave hook (with possible explicit js callback)
  	 * 5. reflow if no explicit js callback is provided
  	 * 6. based on transition type:
  	 *    - transition or animation:
  	 *        wait for end event, remove class, then done if
  	 *        there's no explicit js callback.
  	 *    - no css transition:
  	 *        done if there's no explicit js callback.
  	 * 7. wait for either done or js callback, then call
  	 *    afterLeave hook.
  	 *
  	 * @param {Function} op - remove/hide the element
  	 * @param {Function} [cb]
  	 */
  
  	p$1.leave = function (op, cb) {
  	  this.cancelPending();
  	  this.callHook('beforeLeave');
  	  this.op = op;
  	  this.cb = cb;
  	  addClass(this.el, this.leaveClass);
  	  this.left = false;
  	  this.callHookWithCb('leave');
  	  if (this.left) {
  	    return; // user called done synchronously.
  	  }
  	  this.cancel = this.hooks && this.hooks.leaveCancelled;
  	  // only need to handle leaveDone if
  	  // 1. the transition is already done (synchronously called
  	  //    by the user, which causes this.op set to null)
  	  // 2. there's no explicit js callback
  	  if (this.op && !this.pendingJsCb) {
  	    // if a CSS transition leaves immediately after enter,
  	    // the transitionend event never fires. therefore we
  	    // detect such cases and end the leave immediately.
  	    if (this.justEntered) {
  	      this.leaveDone();
  	    } else {
  	      pushJob(this.leaveNextTick);
  	    }
  	  }
  	};
  
  	/**
  	 * The "nextTick" phase of a leaving transition.
  	 */
  
  	p$1.leaveNextTick = function () {
  	  var type = this.getCssTransitionType(this.leaveClass);
  	  if (type) {
  	    var event = type === TYPE_TRANSITION ? transitionEndEvent : animationEndEvent;
  	    this.setupCssCb(event, this.leaveDone);
  	  } else {
  	    this.leaveDone();
  	  }
  	};
  
  	/**
  	 * The "cleanup" phase of a leaving transition.
  	 */
  
  	p$1.leaveDone = function () {
  	  this.left = true;
  	  this.cancel = this.pendingJsCb = null;
  	  this.op();
  	  removeClass(this.el, this.leaveClass);
  	  this.callHook('afterLeave');
  	  if (this.cb) this.cb();
  	  this.op = null;
  	};
  
  	/**
  	 * Cancel any pending callbacks from a previously running
  	 * but not finished transition.
  	 */
  
  	p$1.cancelPending = function () {
  	  this.op = this.cb = null;
  	  var hasPending = false;
  	  if (this.pendingCssCb) {
  	    hasPending = true;
  	    off(this.el, this.pendingCssEvent, this.pendingCssCb);
  	    this.pendingCssEvent = this.pendingCssCb = null;
  	  }
  	  if (this.pendingJsCb) {
  	    hasPending = true;
  	    this.pendingJsCb.cancel();
  	    this.pendingJsCb = null;
  	  }
  	  if (hasPending) {
  	    removeClass(this.el, this.enterClass);
  	    removeClass(this.el, this.leaveClass);
  	  }
  	  if (this.cancel) {
  	    this.cancel.call(this.vm, this.el);
  	    this.cancel = null;
  	  }
  	};
  
  	/**
  	 * Call a user-provided synchronous hook function.
  	 *
  	 * @param {String} type
  	 */
  
  	p$1.callHook = function (type) {
  	  if (this.hooks && this.hooks[type]) {
  	    this.hooks[type].call(this.vm, this.el);
  	  }
  	};
  
  	/**
  	 * Call a user-provided, potentially-async hook function.
  	 * We check for the length of arguments to see if the hook
  	 * expects a `done` callback. If true, the transition's end
  	 * will be determined by when the user calls that callback;
  	 * otherwise, the end is determined by the CSS transition or
  	 * animation.
  	 *
  	 * @param {String} type
  	 */
  
  	p$1.callHookWithCb = function (type) {
  	  var hook = this.hooks && this.hooks[type];
  	  if (hook) {
  	    if (hook.length > 1) {
  	      this.pendingJsCb = cancellable(this[type + 'Done']);
  	    }
  	    hook.call(this.vm, this.el, this.pendingJsCb);
  	  }
  	};
  
  	/**
  	 * Get an element's transition type based on the
  	 * calculated styles.
  	 *
  	 * @param {String} className
  	 * @return {Number}
  	 */
  
  	p$1.getCssTransitionType = function (className) {
  	  /* istanbul ignore if */
  	  if (!transitionEndEvent ||
  	  // skip CSS transitions if page is not visible -
  	  // this solves the issue of transitionend events not
  	  // firing until the page is visible again.
  	  // pageVisibility API is supported in IE10+, same as
  	  // CSS transitions.
  	  document.hidden ||
  	  // explicit js-only transition
  	  this.hooks && this.hooks.css === false ||
  	  // element is hidden
  	  isHidden(this.el)) {
  	    return;
  	  }
  	  var type = this.type || this.typeCache[className];
  	  if (type) return type;
  	  var inlineStyles = this.el.style;
  	  var computedStyles = window.getComputedStyle(this.el);
  	  var transDuration = inlineStyles[transDurationProp] || computedStyles[transDurationProp];
  	  if (transDuration && transDuration !== '0s') {
  	    type = TYPE_TRANSITION;
  	  } else {
  	    var animDuration = inlineStyles[animDurationProp] || computedStyles[animDurationProp];
  	    if (animDuration && animDuration !== '0s') {
  	      type = TYPE_ANIMATION;
  	    }
  	  }
  	  if (type) {
  	    this.typeCache[className] = type;
  	  }
  	  return type;
  	};
  
  	/**
  	 * Setup a CSS transitionend/animationend callback.
  	 *
  	 * @param {String} event
  	 * @param {Function} cb
  	 */
  
  	p$1.setupCssCb = function (event, cb) {
  	  this.pendingCssEvent = event;
  	  var self = this;
  	  var el = this.el;
  	  var onEnd = this.pendingCssCb = function (e) {
  	    if (e.target === el) {
  	      off(el, event, onEnd);
  	      self.pendingCssEvent = self.pendingCssCb = null;
  	      if (!self.pendingJsCb && cb) {
  	        cb();
  	      }
  	    }
  	  };
  	  on(el, event, onEnd);
  	};
  
  	/**
  	 * Check if an element is hidden - in that case we can just
  	 * skip the transition alltogether.
  	 *
  	 * @param {Element} el
  	 * @return {Boolean}
  	 */
  
  	function isHidden(el) {
  	  if (/svg$/.test(el.namespaceURI)) {
  	    // SVG elements do not have offset(Width|Height)
  	    // so we need to check the client rect
  	    var rect = el.getBoundingClientRect();
  	    return !(rect.width || rect.height);
  	  } else {
  	    return !(el.offsetWidth || el.offsetHeight || el.getClientRects().length);
  	  }
  	}
  
  	var transition$1 = {
  
  	  priority: TRANSITION,
  
  	  update: function update(id, oldId) {
  	    var el = this.el;
  	    // resolve on owner vm
  	    var hooks = resolveAsset(this.vm.$options, 'transitions', id);
  	    id = id || 'v';
  	    el.__v_trans = new Transition(el, id, hooks, this.vm);
  	    if (oldId) {
  	      removeClass(el, oldId + '-transition');
  	    }
  	    addClass(el, id + '-transition');
  	  }
  	};
  
  	var internalDirectives = {
  	  style: style,
  	  'class': vClass,
  	  component: component,
  	  prop: propDef,
  	  transition: transition$1
  	};
  
  	// special binding prefixes
  	var bindRE = /^v-bind:|^:/;
  	var onRE = /^v-on:|^@/;
  	var dirAttrRE = /^v-([^:]+)(?:$|:(.*)$)/;
  	var modifierRE = /\.[^\.]+/g;
  	var transitionRE = /^(v-bind:|:)?transition$/;
  
  	// default directive priority
  	var DEFAULT_PRIORITY = 1000;
  	var DEFAULT_TERMINAL_PRIORITY = 2000;
  
  	/**
  	 * Compile a template and return a reusable composite link
  	 * function, which recursively contains more link functions
  	 * inside. This top level compile function would normally
  	 * be called on instance root nodes, but can also be used
  	 * for partial compilation if the partial argument is true.
  	 *
  	 * The returned composite link function, when called, will
  	 * return an unlink function that tearsdown all directives
  	 * created during the linking phase.
  	 *
  	 * @param {Element|DocumentFragment} el
  	 * @param {Object} options
  	 * @param {Boolean} partial
  	 * @return {Function}
  	 */
  
  	function compile(el, options, partial) {
  	  // link function for the node itself.
  	  var nodeLinkFn = partial || !options._asComponent ? compileNode(el, options) : null;
  	  // link function for the childNodes
  	  var childLinkFn = !(nodeLinkFn && nodeLinkFn.terminal) && !isScript(el) && el.hasChildNodes() ? compileNodeList(el.childNodes, options) : null;
  
  	  /**
  	   * A composite linker function to be called on a already
  	   * compiled piece of DOM, which instantiates all directive
  	   * instances.
  	   *
  	   * @param {Vue} vm
  	   * @param {Element|DocumentFragment} el
  	   * @param {Vue} [host] - host vm of transcluded content
  	   * @param {Object} [scope] - v-for scope
  	   * @param {Fragment} [frag] - link context fragment
  	   * @return {Function|undefined}
  	   */
  
  	  return function compositeLinkFn(vm, el, host, scope, frag) {
  	    // cache childNodes before linking parent, fix #657
  	    var childNodes = toArray(el.childNodes);
  	    // link
  	    var dirs = linkAndCapture(function compositeLinkCapturer() {
  	      if (nodeLinkFn) nodeLinkFn(vm, el, host, scope, frag);
  	      if (childLinkFn) childLinkFn(vm, childNodes, host, scope, frag);
  	    }, vm);
  	    return makeUnlinkFn(vm, dirs);
  	  };
  	}
  
  	/**
  	 * Apply a linker to a vm/element pair and capture the
  	 * directives created during the process.
  	 *
  	 * @param {Function} linker
  	 * @param {Vue} vm
  	 */
  
  	function linkAndCapture(linker, vm) {
  	  /* istanbul ignore if */
  	  if (process.env.NODE_ENV === 'production') {
  	    // reset directives before every capture in production
  	    // mode, so that when unlinking we don't need to splice
  	    // them out (which turns out to be a perf hit).
  	    // they are kept in development mode because they are
  	    // useful for Vue's own tests.
  	    vm._directives = [];
  	  }
  	  var originalDirCount = vm._directives.length;
  	  linker();
  	  var dirs = vm._directives.slice(originalDirCount);
  	  dirs.sort(directiveComparator);
  	  for (var i = 0, l = dirs.length; i < l; i++) {
  	    dirs[i]._bind();
  	  }
  	  return dirs;
  	}
  
  	/**
  	 * Directive priority sort comparator
  	 *
  	 * @param {Object} a
  	 * @param {Object} b
  	 */
  
  	function directiveComparator(a, b) {
  	  a = a.descriptor.def.priority || DEFAULT_PRIORITY;
  	  b = b.descriptor.def.priority || DEFAULT_PRIORITY;
  	  return a > b ? -1 : a === b ? 0 : 1;
  	}
  
  	/**
  	 * Linker functions return an unlink function that
  	 * tearsdown all directives instances generated during
  	 * the process.
  	 *
  	 * We create unlink functions with only the necessary
  	 * information to avoid retaining additional closures.
  	 *
  	 * @param {Vue} vm
  	 * @param {Array} dirs
  	 * @param {Vue} [context]
  	 * @param {Array} [contextDirs]
  	 * @return {Function}
  	 */
  
  	function makeUnlinkFn(vm, dirs, context, contextDirs) {
  	  function unlink(destroying) {
  	    teardownDirs(vm, dirs, destroying);
  	    if (context && contextDirs) {
  	      teardownDirs(context, contextDirs);
  	    }
  	  }
  	  // expose linked directives
  	  unlink.dirs = dirs;
  	  return unlink;
  	}
  
  	/**
  	 * Teardown partial linked directives.
  	 *
  	 * @param {Vue} vm
  	 * @param {Array} dirs
  	 * @param {Boolean} destroying
  	 */
  
  	function teardownDirs(vm, dirs, destroying) {
  	  var i = dirs.length;
  	  while (i--) {
  	    dirs[i]._teardown();
  	    if (process.env.NODE_ENV !== 'production' && !destroying) {
  	      vm._directives.$remove(dirs[i]);
  	    }
  	  }
  	}
  
  	/**
  	 * Compile link props on an instance.
  	 *
  	 * @param {Vue} vm
  	 * @param {Element} el
  	 * @param {Object} props
  	 * @param {Object} [scope]
  	 * @return {Function}
  	 */
  
  	function compileAndLinkProps(vm, el, props, scope) {
  	  var propsLinkFn = compileProps(el, props, vm);
  	  var propDirs = linkAndCapture(function () {
  	    propsLinkFn(vm, scope);
  	  }, vm);
  	  return makeUnlinkFn(vm, propDirs);
  	}
  
  	/**
  	 * Compile the root element of an instance.
  	 *
  	 * 1. attrs on context container (context scope)
  	 * 2. attrs on the component template root node, if
  	 *    replace:true (child scope)
  	 *
  	 * If this is a fragment instance, we only need to compile 1.
  	 *
  	 * @param {Element} el
  	 * @param {Object} options
  	 * @param {Object} contextOptions
  	 * @return {Function}
  	 */
  
  	function compileRoot(el, options, contextOptions) {
  	  var containerAttrs = options._containerAttrs;
  	  var replacerAttrs = options._replacerAttrs;
  	  var contextLinkFn, replacerLinkFn;
  
  	  // only need to compile other attributes for
  	  // non-fragment instances
  	  if (el.nodeType !== 11) {
  	    // for components, container and replacer need to be
  	    // compiled separately and linked in different scopes.
  	    if (options._asComponent) {
  	      // 2. container attributes
  	      if (containerAttrs && contextOptions) {
  	        contextLinkFn = compileDirectives(containerAttrs, contextOptions);
  	      }
  	      if (replacerAttrs) {
  	        // 3. replacer attributes
  	        replacerLinkFn = compileDirectives(replacerAttrs, options);
  	      }
  	    } else {
  	      // non-component, just compile as a normal element.
  	      replacerLinkFn = compileDirectives(el.attributes, options);
  	    }
  	  } else if (process.env.NODE_ENV !== 'production' && containerAttrs) {
  	    // warn container directives for fragment instances
  	    var names = containerAttrs.filter(function (attr) {
  	      // allow vue-loader/vueify scoped css attributes
  	      return attr.name.indexOf('_v-') < 0 &&
  	      // allow event listeners
  	      !onRE.test(attr.name) &&
  	      // allow slots
  	      attr.name !== 'slot';
  	    }).map(function (attr) {
  	      return '"' + attr.name + '"';
  	    });
  	    if (names.length) {
  	      var plural = names.length > 1;
  	      warn('Attribute' + (plural ? 's ' : ' ') + names.join(', ') + (plural ? ' are' : ' is') + ' ignored on component ' + '<' + options.el.tagName.toLowerCase() + '> because ' + 'the component is a fragment instance: ' + 'http://vuejs.org/guide/components.html#Fragment-Instance');
  	    }
  	  }
  
  	  options._containerAttrs = options._replacerAttrs = null;
  	  return function rootLinkFn(vm, el, scope) {
  	    // link context scope dirs
  	    var context = vm._context;
  	    var contextDirs;
  	    if (context && contextLinkFn) {
  	      contextDirs = linkAndCapture(function () {
  	        contextLinkFn(context, el, null, scope);
  	      }, context);
  	    }
  
  	    // link self
  	    var selfDirs = linkAndCapture(function () {
  	      if (replacerLinkFn) replacerLinkFn(vm, el);
  	    }, vm);
  
  	    // return the unlink function that tearsdown context
  	    // container directives.
  	    return makeUnlinkFn(vm, selfDirs, context, contextDirs);
  	  };
  	}
  
  	/**
  	 * Compile a node and return a nodeLinkFn based on the
  	 * node type.
  	 *
  	 * @param {Node} node
  	 * @param {Object} options
  	 * @return {Function|null}
  	 */
  
  	function compileNode(node, options) {
  	  var type = node.nodeType;
  	  if (type === 1 && !isScript(node)) {
  	    return compileElement(node, options);
  	  } else if (type === 3 && node.data.trim()) {
  	    return compileTextNode(node, options);
  	  } else {
  	    return null;
  	  }
  	}
  
  	/**
  	 * Compile an element and return a nodeLinkFn.
  	 *
  	 * @param {Element} el
  	 * @param {Object} options
  	 * @return {Function|null}
  	 */
  
  	function compileElement(el, options) {
  	  // preprocess textareas.
  	  // textarea treats its text content as the initial value.
  	  // just bind it as an attr directive for value.
  	  if (el.tagName === 'TEXTAREA') {
  	    var tokens = parseText(el.value);
  	    if (tokens) {
  	      el.setAttribute(':value', tokensToExp(tokens));
  	      el.value = '';
  	    }
  	  }
  	  var linkFn;
  	  var hasAttrs = el.hasAttributes();
  	  var attrs = hasAttrs && toArray(el.attributes);
  	  // check terminal directives (for & if)
  	  if (hasAttrs) {
  	    linkFn = checkTerminalDirectives(el, attrs, options);
  	  }
  	  // check element directives
  	  if (!linkFn) {
  	    linkFn = checkElementDirectives(el, options);
  	  }
  	  // check component
  	  if (!linkFn) {
  	    linkFn = checkComponent(el, options);
  	  }
  	  // normal directives
  	  if (!linkFn && hasAttrs) {
  	    linkFn = compileDirectives(attrs, options);
  	  }
  	  return linkFn;
  	}
  
  	/**
  	 * Compile a textNode and return a nodeLinkFn.
  	 *
  	 * @param {TextNode} node
  	 * @param {Object} options
  	 * @return {Function|null} textNodeLinkFn
  	 */
  
  	function compileTextNode(node, options) {
  	  // skip marked text nodes
  	  if (node._skip) {
  	    return removeText;
  	  }
  
  	  var tokens = parseText(node.wholeText);
  	  if (!tokens) {
  	    return null;
  	  }
  
  	  // mark adjacent text nodes as skipped,
  	  // because we are using node.wholeText to compile
  	  // all adjacent text nodes together. This fixes
  	  // issues in IE where sometimes it splits up a single
  	  // text node into multiple ones.
  	  var next = node.nextSibling;
  	  while (next && next.nodeType === 3) {
  	    next._skip = true;
  	    next = next.nextSibling;
  	  }
  
  	  var frag = document.createDocumentFragment();
  	  var el, token;
  	  for (var i = 0, l = tokens.length; i < l; i++) {
  	    token = tokens[i];
  	    el = token.tag ? processTextToken(token, options) : document.createTextNode(token.value);
  	    frag.appendChild(el);
  	  }
  	  return makeTextNodeLinkFn(tokens, frag, options);
  	}
  
  	/**
  	 * Linker for an skipped text node.
  	 *
  	 * @param {Vue} vm
  	 * @param {Text} node
  	 */
  
  	function removeText(vm, node) {
  	  remove(node);
  	}
  
  	/**
  	 * Process a single text token.
  	 *
  	 * @param {Object} token
  	 * @param {Object} options
  	 * @return {Node}
  	 */
  
  	function processTextToken(token, options) {
  	  var el;
  	  if (token.oneTime) {
  	    el = document.createTextNode(token.value);
  	  } else {
  	    if (token.html) {
  	      el = document.createComment('v-html');
  	      setTokenType('html');
  	    } else {
  	      // IE will clean up empty textNodes during
  	      // frag.cloneNode(true), so we have to give it
  	      // something here...
  	      el = document.createTextNode(' ');
  	      setTokenType('text');
  	    }
  	  }
  	  function setTokenType(type) {
  	    if (token.descriptor) return;
  	    var parsed = parseDirective(token.value);
  	    token.descriptor = {
  	      name: type,
  	      def: directives[type],
  	      expression: parsed.expression,
  	      filters: parsed.filters
  	    };
  	  }
  	  return el;
  	}
  
  	/**
  	 * Build a function that processes a textNode.
  	 *
  	 * @param {Array<Object>} tokens
  	 * @param {DocumentFragment} frag
  	 */
  
  	function makeTextNodeLinkFn(tokens, frag) {
  	  return function textNodeLinkFn(vm, el, host, scope) {
  	    var fragClone = frag.cloneNode(true);
  	    var childNodes = toArray(fragClone.childNodes);
  	    var token, value, node;
  	    for (var i = 0, l = tokens.length; i < l; i++) {
  	      token = tokens[i];
  	      value = token.value;
  	      if (token.tag) {
  	        node = childNodes[i];
  	        if (token.oneTime) {
  	          value = (scope || vm).$eval(value);
  	          if (token.html) {
  	            replace(node, parseTemplate(value, true));
  	          } else {
  	            node.data = value;
  	          }
  	        } else {
  	          vm._bindDir(token.descriptor, node, host, scope);
  	        }
  	      }
  	    }
  	    replace(el, fragClone);
  	  };
  	}
  
  	/**
  	 * Compile a node list and return a childLinkFn.
  	 *
  	 * @param {NodeList} nodeList
  	 * @param {Object} options
  	 * @return {Function|undefined}
  	 */
  
  	function compileNodeList(nodeList, options) {
  	  var linkFns = [];
  	  var nodeLinkFn, childLinkFn, node;
  	  for (var i = 0, l = nodeList.length; i < l; i++) {
  	    node = nodeList[i];
  	    nodeLinkFn = compileNode(node, options);
  	    childLinkFn = !(nodeLinkFn && nodeLinkFn.terminal) && node.tagName !== 'SCRIPT' && node.hasChildNodes() ? compileNodeList(node.childNodes, options) : null;
  	    linkFns.push(nodeLinkFn, childLinkFn);
  	  }
  	  return linkFns.length ? makeChildLinkFn(linkFns) : null;
  	}
  
  	/**
  	 * Make a child link function for a node's childNodes.
  	 *
  	 * @param {Array<Function>} linkFns
  	 * @return {Function} childLinkFn
  	 */
  
  	function makeChildLinkFn(linkFns) {
  	  return function childLinkFn(vm, nodes, host, scope, frag) {
  	    var node, nodeLinkFn, childrenLinkFn;
  	    for (var i = 0, n = 0, l = linkFns.length; i < l; n++) {
  	      node = nodes[n];
  	      nodeLinkFn = linkFns[i++];
  	      childrenLinkFn = linkFns[i++];
  	      // cache childNodes before linking parent, fix #657
  	      var childNodes = toArray(node.childNodes);
  	      if (nodeLinkFn) {
  	        nodeLinkFn(vm, node, host, scope, frag);
  	      }
  	      if (childrenLinkFn) {
  	        childrenLinkFn(vm, childNodes, host, scope, frag);
  	      }
  	    }
  	  };
  	}
  
  	/**
  	 * Check for element directives (custom elements that should
  	 * be resovled as terminal directives).
  	 *
  	 * @param {Element} el
  	 * @param {Object} options
  	 */
  
  	function checkElementDirectives(el, options) {
  	  var tag = el.tagName.toLowerCase();
  	  if (commonTagRE.test(tag)) {
  	    return;
  	  }
  	  var def = resolveAsset(options, 'elementDirectives', tag);
  	  if (def) {
  	    return makeTerminalNodeLinkFn(el, tag, '', options, def);
  	  }
  	}
  
  	/**
  	 * Check if an element is a component. If yes, return
  	 * a component link function.
  	 *
  	 * @param {Element} el
  	 * @param {Object} options
  	 * @return {Function|undefined}
  	 */
  
  	function checkComponent(el, options) {
  	  var component = checkComponentAttr(el, options);
  	  if (component) {
  	    var ref = findRef(el);
  	    var descriptor = {
  	      name: 'component',
  	      ref: ref,
  	      expression: component.id,
  	      def: internalDirectives.component,
  	      modifiers: {
  	        literal: !component.dynamic
  	      }
  	    };
  	    var componentLinkFn = function componentLinkFn(vm, el, host, scope, frag) {
  	      if (ref) {
  	        defineReactive((scope || vm).$refs, ref, null);
  	      }
  	      vm._bindDir(descriptor, el, host, scope, frag);
  	    };
  	    componentLinkFn.terminal = true;
  	    return componentLinkFn;
  	  }
  	}
  
  	/**
  	 * Check an element for terminal directives in fixed order.
  	 * If it finds one, return a terminal link function.
  	 *
  	 * @param {Element} el
  	 * @param {Array} attrs
  	 * @param {Object} options
  	 * @return {Function} terminalLinkFn
  	 */
  
  	function checkTerminalDirectives(el, attrs, options) {
  	  // skip v-pre
  	  if (getAttr(el, 'v-pre') !== null) {
  	    return skip;
  	  }
  	  // skip v-else block, but only if following v-if
  	  if (el.hasAttribute('v-else')) {
  	    var prev = el.previousElementSibling;
  	    if (prev && prev.hasAttribute('v-if')) {
  	      return skip;
  	    }
  	  }
  
  	  var attr, name, value, modifiers, matched, dirName, rawName, arg, def, termDef;
  	  for (var i = 0, j = attrs.length; i < j; i++) {
  	    attr = attrs[i];
  	    name = attr.name.replace(modifierRE, '');
  	    if (matched = name.match(dirAttrRE)) {
  	      def = resolveAsset(options, 'directives', matched[1]);
  	      if (def && def.terminal) {
  	        if (!termDef || (def.priority || DEFAULT_TERMINAL_PRIORITY) > termDef.priority) {
  	          termDef = def;
  	          rawName = attr.name;
  	          modifiers = parseModifiers(attr.name);
  	          value = attr.value;
  	          dirName = matched[1];
  	          arg = matched[2];
  	        }
  	      }
  	    }
  	  }
  
  	  if (termDef) {
  	    return makeTerminalNodeLinkFn(el, dirName, value, options, termDef, rawName, arg, modifiers);
  	  }
  	}
  
  	function skip() {}
  	skip.terminal = true;
  
  	/**
  	 * Build a node link function for a terminal directive.
  	 * A terminal link function terminates the current
  	 * compilation recursion and handles compilation of the
  	 * subtree in the directive.
  	 *
  	 * @param {Element} el
  	 * @param {String} dirName
  	 * @param {String} value
  	 * @param {Object} options
  	 * @param {Object} def
  	 * @param {String} [rawName]
  	 * @param {String} [arg]
  	 * @param {Object} [modifiers]
  	 * @return {Function} terminalLinkFn
  	 */
  
  	function makeTerminalNodeLinkFn(el, dirName, value, options, def, rawName, arg, modifiers) {
  	  var parsed = parseDirective(value);
  	  var descriptor = {
  	    name: dirName,
  	    arg: arg,
  	    expression: parsed.expression,
  	    filters: parsed.filters,
  	    raw: value,
  	    attr: rawName,
  	    modifiers: modifiers,
  	    def: def
  	  };
  	  // check ref for v-for and router-view
  	  if (dirName === 'for' || dirName === 'router-view') {
  	    descriptor.ref = findRef(el);
  	  }
  	  var fn = function terminalNodeLinkFn(vm, el, host, scope, frag) {
  	    if (descriptor.ref) {
  	      defineReactive((scope || vm).$refs, descriptor.ref, null);
  	    }
  	    vm._bindDir(descriptor, el, host, scope, frag);
  	  };
  	  fn.terminal = true;
  	  return fn;
  	}
  
  	/**
  	 * Compile the directives on an element and return a linker.
  	 *
  	 * @param {Array|NamedNodeMap} attrs
  	 * @param {Object} options
  	 * @return {Function}
  	 */
  
  	function compileDirectives(attrs, options) {
  	  var i = attrs.length;
  	  var dirs = [];
  	  var attr, name, value, rawName, rawValue, dirName, arg, modifiers, dirDef, tokens, matched;
  	  while (i--) {
  	    attr = attrs[i];
  	    name = rawName = attr.name;
  	    value = rawValue = attr.value;
  	    tokens = parseText(value);
  	    // reset arg
  	    arg = null;
  	    // check modifiers
  	    modifiers = parseModifiers(name);
  	    name = name.replace(modifierRE, '');
  
  	    // attribute interpolations
  	    if (tokens) {
  	      value = tokensToExp(tokens);
  	      arg = name;
  	      pushDir('bind', directives.bind, tokens);
  	      // warn against mixing mustaches with v-bind
  	      if (process.env.NODE_ENV !== 'production') {
  	        if (name === 'class' && Array.prototype.some.call(attrs, function (attr) {
  	          return attr.name === ':class' || attr.name === 'v-bind:class';
  	        })) {
  	          warn('class="' + rawValue + '": Do not mix mustache interpolation ' + 'and v-bind for "class" on the same element. Use one or the other.', options);
  	        }
  	      }
  	    } else
  
  	      // special attribute: transition
  	      if (transitionRE.test(name)) {
  	        modifiers.literal = !bindRE.test(name);
  	        pushDir('transition', internalDirectives.transition);
  	      } else
  
  	        // event handlers
  	        if (onRE.test(name)) {
  	          arg = name.replace(onRE, '');
  	          pushDir('on', directives.on);
  	        } else
  
  	          // attribute bindings
  	          if (bindRE.test(name)) {
  	            dirName = name.replace(bindRE, '');
  	            if (dirName === 'style' || dirName === 'class') {
  	              pushDir(dirName, internalDirectives[dirName]);
  	            } else {
  	              arg = dirName;
  	              pushDir('bind', directives.bind);
  	            }
  	          } else
  
  	            // normal directives
  	            if (matched = name.match(dirAttrRE)) {
  	              dirName = matched[1];
  	              arg = matched[2];
  
  	              // skip v-else (when used with v-show)
  	              if (dirName === 'else') {
  	                continue;
  	              }
  
  	              dirDef = resolveAsset(options, 'directives', dirName, true);
  	              if (dirDef) {
  	                pushDir(dirName, dirDef);
  	              }
  	            }
  	  }
  
  	  /**
  	   * Push a directive.
  	   *
  	   * @param {String} dirName
  	   * @param {Object|Function} def
  	   * @param {Array} [interpTokens]
  	   */
  
  	  function pushDir(dirName, def, interpTokens) {
  	    var hasOneTimeToken = interpTokens && hasOneTime(interpTokens);
  	    var parsed = !hasOneTimeToken && parseDirective(value);
  	    dirs.push({
  	      name: dirName,
  	      attr: rawName,
  	      raw: rawValue,
  	      def: def,
  	      arg: arg,
  	      modifiers: modifiers,
  	      // conversion from interpolation strings with one-time token
  	      // to expression is differed until directive bind time so that we
  	      // have access to the actual vm context for one-time bindings.
  	      expression: parsed && parsed.expression,
  	      filters: parsed && parsed.filters,
  	      interp: interpTokens,
  	      hasOneTime: hasOneTimeToken
  	    });
  	  }
  
  	  if (dirs.length) {
  	    return makeNodeLinkFn(dirs);
  	  }
  	}
  
  	/**
  	 * Parse modifiers from directive attribute name.
  	 *
  	 * @param {String} name
  	 * @return {Object}
  	 */
  
  	function parseModifiers(name) {
  	  var res = Object.create(null);
  	  var match = name.match(modifierRE);
  	  if (match) {
  	    var i = match.length;
  	    while (i--) {
  	      res[match[i].slice(1)] = true;
  	    }
  	  }
  	  return res;
  	}
  
  	/**
  	 * Build a link function for all directives on a single node.
  	 *
  	 * @param {Array} directives
  	 * @return {Function} directivesLinkFn
  	 */
  
  	function makeNodeLinkFn(directives) {
  	  return function nodeLinkFn(vm, el, host, scope, frag) {
  	    // reverse apply because it's sorted low to high
  	    var i = directives.length;
  	    while (i--) {
  	      vm._bindDir(directives[i], el, host, scope, frag);
  	    }
  	  };
  	}
  
  	/**
  	 * Check if an interpolation string contains one-time tokens.
  	 *
  	 * @param {Array} tokens
  	 * @return {Boolean}
  	 */
  
  	function hasOneTime(tokens) {
  	  var i = tokens.length;
  	  while (i--) {
  	    if (tokens[i].oneTime) return true;
  	  }
  	}
  
  	function isScript(el) {
  	  return el.tagName === 'SCRIPT' && (!el.hasAttribute('type') || el.getAttribute('type') === 'text/javascript');
  	}
  
  	var specialCharRE = /[^\w\-:\.]/;
  
  	/**
  	 * Process an element or a DocumentFragment based on a
  	 * instance option object. This allows us to transclude
  	 * a template node/fragment before the instance is created,
  	 * so the processed fragment can then be cloned and reused
  	 * in v-for.
  	 *
  	 * @param {Element} el
  	 * @param {Object} options
  	 * @return {Element|DocumentFragment}
  	 */
  
  	function transclude(el, options) {
  	  // extract container attributes to pass them down
  	  // to compiler, because they need to be compiled in
  	  // parent scope. we are mutating the options object here
  	  // assuming the same object will be used for compile
  	  // right after this.
  	  if (options) {
  	    options._containerAttrs = extractAttrs(el);
  	  }
  	  // for template tags, what we want is its content as
  	  // a documentFragment (for fragment instances)
  	  if (isTemplate(el)) {
  	    el = parseTemplate(el);
  	  }
  	  if (options) {
  	    if (options._asComponent && !options.template) {
  	      options.template = '<slot></slot>';
  	    }
  	    if (options.template) {
  	      options._content = extractContent(el);
  	      el = transcludeTemplate(el, options);
  	    }
  	  }
  	  if (isFragment(el)) {
  	    // anchors for fragment instance
  	    // passing in `persist: true` to avoid them being
  	    // discarded by IE during template cloning
  	    prepend(createAnchor('v-start', true), el);
  	    el.appendChild(createAnchor('v-end', true));
  	  }
  	  return el;
  	}
  
  	/**
  	 * Process the template option.
  	 * If the replace option is true this will swap the $el.
  	 *
  	 * @param {Element} el
  	 * @param {Object} options
  	 * @return {Element|DocumentFragment}
  	 */
  
  	function transcludeTemplate(el, options) {
  	  var template = options.template;
  	  var frag = parseTemplate(template, true);
  	  if (frag) {
  	    var replacer = frag.firstChild;
  	    var tag = replacer.tagName && replacer.tagName.toLowerCase();
  	    if (options.replace) {
  	      /* istanbul ignore if */
  	      if (el === document.body) {
  	        process.env.NODE_ENV !== 'production' && warn('You are mounting an instance with a template to ' + '<body>. This will replace <body> entirely. You ' + 'should probably use `replace: false` here.');
  	      }
  	      // there are many cases where the instance must
  	      // become a fragment instance: basically anything that
  	      // can create more than 1 root nodes.
  	      if (
  	      // multi-children template
  	      frag.childNodes.length > 1 ||
  	      // non-element template
  	      replacer.nodeType !== 1 ||
  	      // single nested component
  	      tag === 'component' || resolveAsset(options, 'components', tag) || hasBindAttr(replacer, 'is') ||
  	      // element directive
  	      resolveAsset(options, 'elementDirectives', tag) ||
  	      // for block
  	      replacer.hasAttribute('v-for') ||
  	      // if block
  	      replacer.hasAttribute('v-if')) {
  	        return frag;
  	      } else {
  	        options._replacerAttrs = extractAttrs(replacer);
  	        mergeAttrs(el, replacer);
  	        return replacer;
  	      }
  	    } else {
  	      el.appendChild(frag);
  	      return el;
  	    }
  	  } else {
  	    process.env.NODE_ENV !== 'production' && warn('Invalid template option: ' + template);
  	  }
  	}
  
  	/**
  	 * Helper to extract a component container's attributes
  	 * into a plain object array.
  	 *
  	 * @param {Element} el
  	 * @return {Array}
  	 */
  
  	function extractAttrs(el) {
  	  if (el.nodeType === 1 && el.hasAttributes()) {
  	    return toArray(el.attributes);
  	  }
  	}
  
  	/**
  	 * Merge the attributes of two elements, and make sure
  	 * the class names are merged properly.
  	 *
  	 * @param {Element} from
  	 * @param {Element} to
  	 */
  
  	function mergeAttrs(from, to) {
  	  var attrs = from.attributes;
  	  var i = attrs.length;
  	  var name, value;
  	  while (i--) {
  	    name = attrs[i].name;
  	    value = attrs[i].value;
  	    if (!to.hasAttribute(name) && !specialCharRE.test(name)) {
  	      to.setAttribute(name, value);
  	    } else if (name === 'class' && !parseText(value) && (value = value.trim())) {
  	      value.split(/\s+/).forEach(function (cls) {
  	        addClass(to, cls);
  	      });
  	    }
  	  }
  	}
  
  	/**
  	 * Scan and determine slot content distribution.
  	 * We do this during transclusion instead at compile time so that
  	 * the distribution is decoupled from the compilation order of
  	 * the slots.
  	 *
  	 * @param {Element|DocumentFragment} template
  	 * @param {Element} content
  	 * @param {Vue} vm
  	 */
  
  	function resolveSlots(vm, content) {
  	  if (!content) {
  	    return;
  	  }
  	  var contents = vm._slotContents = Object.create(null);
  	  var el, name;
  	  for (var i = 0, l = content.children.length; i < l; i++) {
  	    el = content.children[i];
  	    /* eslint-disable no-cond-assign */
  	    if (name = el.getAttribute('slot')) {
  	      (contents[name] || (contents[name] = [])).push(el);
  	    }
  	    /* eslint-enable no-cond-assign */
  	    if (process.env.NODE_ENV !== 'production' && getBindAttr(el, 'slot')) {
  	      warn('The "slot" attribute must be static.', vm.$parent);
  	    }
  	  }
  	  for (name in contents) {
  	    contents[name] = extractFragment(contents[name], content);
  	  }
  	  if (content.hasChildNodes()) {
  	    var nodes = content.childNodes;
  	    if (nodes.length === 1 && nodes[0].nodeType === 3 && !nodes[0].data.trim()) {
  	      return;
  	    }
  	    contents['default'] = extractFragment(content.childNodes, content);
  	  }
  	}
  
  	/**
  	 * Extract qualified content nodes from a node list.
  	 *
  	 * @param {NodeList} nodes
  	 * @return {DocumentFragment}
  	 */
  
  	function extractFragment(nodes, parent) {
  	  var frag = document.createDocumentFragment();
  	  nodes = toArray(nodes);
  	  for (var i = 0, l = nodes.length; i < l; i++) {
  	    var node = nodes[i];
  	    if (isTemplate(node) && !node.hasAttribute('v-if') && !node.hasAttribute('v-for')) {
  	      parent.removeChild(node);
  	      node = parseTemplate(node);
  	    }
  	    frag.appendChild(node);
  	  }
  	  return frag;
  	}
  
  
  
  	var compiler = Object.freeze({
  		compile: compile,
  		compileAndLinkProps: compileAndLinkProps,
  		compileRoot: compileRoot,
  		transclude: transclude,
  		resolveSlots: resolveSlots
  	});
  
  	function stateMixin (Vue) {
  	  /**
  	   * Accessor for `$data` property, since setting $data
  	   * requires observing the new object and updating
  	   * proxied properties.
  	   */
  
  	  Object.defineProperty(Vue.prototype, '$data', {
  	    get: function get() {
  	      return this._data;
  	    },
  	    set: function set(newData) {
  	      if (newData !== this._data) {
  	        this._setData(newData);
  	      }
  	    }
  	  });
  
  	  /**
  	   * Setup the scope of an instance, which contains:
  	   * - observed data
  	   * - computed properties
  	   * - user methods
  	   * - meta properties
  	   */
  
  	  Vue.prototype._initState = function () {
  	    this._initProps();
  	    this._initMeta();
  	    this._initMethods();
  	    this._initData();
  	    this._initComputed();
  	  };
  
  	  /**
  	   * Initialize props.
  	   */
  
  	  Vue.prototype._initProps = function () {
  	    var options = this.$options;
  	    var el = options.el;
  	    var props = options.props;
  	    if (props && !el) {
  	      process.env.NODE_ENV !== 'production' && warn('Props will not be compiled if no `el` option is ' + 'provided at instantiation.', this);
  	    }
  	    // make sure to convert string selectors into element now
  	    el = options.el = query(el);
  	    this._propsUnlinkFn = el && el.nodeType === 1 && props
  	    // props must be linked in proper scope if inside v-for
  	    ? compileAndLinkProps(this, el, props, this._scope) : null;
  	  };
  
  	  /**
  	   * Initialize the data.
  	   */
  
  	  Vue.prototype._initData = function () {
  	    var dataFn = this.$options.data;
  	    var data = this._data = dataFn ? dataFn() : {};
  	    if (!isPlainObject(data)) {
  	      data = {};
  	      process.env.NODE_ENV !== 'production' && warn('data functions should return an object.', this);
  	    }
  	    var props = this._props;
  	    // proxy data on instance
  	    var keys = Object.keys(data);
  	    var i, key;
  	    i = keys.length;
  	    while (i--) {
  	      key = keys[i];
  	      // there are two scenarios where we can proxy a data key:
  	      // 1. it's not already defined as a prop
  	      // 2. it's provided via a instantiation option AND there are no
  	      //    template prop present
  	      if (!props || !hasOwn(props, key)) {
  	        this._proxy(key);
  	      } else if (process.env.NODE_ENV !== 'production') {
  	        warn('Data field "' + key + '" is already defined ' + 'as a prop. To provide default value for a prop, use the "default" ' + 'prop option; if you want to pass prop values to an instantiation ' + 'call, use the "propsData" option.', this);
  	      }
  	    }
  	    // observe data
  	    observe(data, this);
  	  };
  
  	  /**
  	   * Swap the instance's $data. Called in $data's setter.
  	   *
  	   * @param {Object} newData
  	   */
  
  	  Vue.prototype._setData = function (newData) {
  	    newData = newData || {};
  	    var oldData = this._data;
  	    this._data = newData;
  	    var keys, key, i;
  	    // unproxy keys not present in new data
  	    keys = Object.keys(oldData);
  	    i = keys.length;
  	    while (i--) {
  	      key = keys[i];
  	      if (!(key in newData)) {
  	        this._unproxy(key);
  	      }
  	    }
  	    // proxy keys not already proxied,
  	    // and trigger change for changed values
  	    keys = Object.keys(newData);
  	    i = keys.length;
  	    while (i--) {
  	      key = keys[i];
  	      if (!hasOwn(this, key)) {
  	        // new property
  	        this._proxy(key);
  	      }
  	    }
  	    oldData.__ob__.removeVm(this);
  	    observe(newData, this);
  	    this._digest();
  	  };
  
  	  /**
  	   * Proxy a property, so that
  	   * vm.prop === vm._data.prop
  	   *
  	   * @param {String} key
  	   */
  
  	  Vue.prototype._proxy = function (key) {
  	    if (!isReserved(key)) {
  	      // need to store ref to self here
  	      // because these getter/setters might
  	      // be called by child scopes via
  	      // prototype inheritance.
  	      var self = this;
  	      Object.defineProperty(self, key, {
  	        configurable: true,
  	        enumerable: true,
  	        get: function proxyGetter() {
  	          return self._data[key];
  	        },
  	        set: function proxySetter(val) {
  	          self._data[key] = val;
  	        }
  	      });
  	    }
  	  };
  
  	  /**
  	   * Unproxy a property.
  	   *
  	   * @param {String} key
  	   */
  
  	  Vue.prototype._unproxy = function (key) {
  	    if (!isReserved(key)) {
  	      delete this[key];
  	    }
  	  };
  
  	  /**
  	   * Force update on every watcher in scope.
  	   */
  
  	  Vue.prototype._digest = function () {
  	    for (var i = 0, l = this._watchers.length; i < l; i++) {
  	      this._watchers[i].update(true); // shallow updates
  	    }
  	  };
  
  	  /**
  	   * Setup computed properties. They are essentially
  	   * special getter/setters
  	   */
  
  	  function noop() {}
  	  Vue.prototype._initComputed = function () {
  	    var computed = this.$options.computed;
  	    if (computed) {
  	      for (var key in computed) {
  	        var userDef = computed[key];
  	        var def = {
  	          enumerable: true,
  	          configurable: true
  	        };
  	        if (typeof userDef === 'function') {
  	          def.get = makeComputedGetter(userDef, this);
  	          def.set = noop;
  	        } else {
  	          def.get = userDef.get ? userDef.cache !== false ? makeComputedGetter(userDef.get, this) : bind(userDef.get, this) : noop;
  	          def.set = userDef.set ? bind(userDef.set, this) : noop;
  	        }
  	        Object.defineProperty(this, key, def);
  	      }
  	    }
  	  };
  
  	  function makeComputedGetter(getter, owner) {
  	    var watcher = new Watcher(owner, getter, null, {
  	      lazy: true
  	    });
  	    return function computedGetter() {
  	      if (watcher.dirty) {
  	        watcher.evaluate();
  	      }
  	      if (Dep.target) {
  	        watcher.depend();
  	      }
  	      return watcher.value;
  	    };
  	  }
  
  	  /**
  	   * Setup instance methods. Methods must be bound to the
  	   * instance since they might be passed down as a prop to
  	   * child components.
  	   */
  
  	  Vue.prototype._initMethods = function () {
  	    var methods = this.$options.methods;
  	    if (methods) {
  	      for (var key in methods) {
  	        this[key] = bind(methods[key], this);
  	      }
  	    }
  	  };
  
  	  /**
  	   * Initialize meta information like $index, $key & $value.
  	   */
  
  	  Vue.prototype._initMeta = function () {
  	    var metas = this.$options._meta;
  	    if (metas) {
  	      for (var key in metas) {
  	        defineReactive(this, key, metas[key]);
  	      }
  	    }
  	  };
  	}
  
  	var eventRE = /^v-on:|^@/;
  
  	function eventsMixin (Vue) {
  	  /**
  	   * Setup the instance's option events & watchers.
  	   * If the value is a string, we pull it from the
  	   * instance's methods by name.
  	   */
  
  	  Vue.prototype._initEvents = function () {
  	    var options = this.$options;
  	    if (options._asComponent) {
  	      registerComponentEvents(this, options.el);
  	    }
  	    registerCallbacks(this, '$on', options.events);
  	    registerCallbacks(this, '$watch', options.watch);
  	  };
  
  	  /**
  	   * Register v-on events on a child component
  	   *
  	   * @param {Vue} vm
  	   * @param {Element} el
  	   */
  
  	  function registerComponentEvents(vm, el) {
  	    var attrs = el.attributes;
  	    var name, value, handler;
  	    for (var i = 0, l = attrs.length; i < l; i++) {
  	      name = attrs[i].name;
  	      if (eventRE.test(name)) {
  	        name = name.replace(eventRE, '');
  	        // force the expression into a statement so that
  	        // it always dynamically resolves the method to call (#2670)
  	        // kinda ugly hack, but does the job.
  	        value = attrs[i].value;
  	        if (isSimplePath(value)) {
  	          value += '.apply(this, $arguments)';
  	        }
  	        handler = (vm._scope || vm._context).$eval(value, true);
  	        handler._fromParent = true;
  	        vm.$on(name.replace(eventRE), handler);
  	      }
  	    }
  	  }
  
  	  /**
  	   * Register callbacks for option events and watchers.
  	   *
  	   * @param {Vue} vm
  	   * @param {String} action
  	   * @param {Object} hash
  	   */
  
  	  function registerCallbacks(vm, action, hash) {
  	    if (!hash) return;
  	    var handlers, key, i, j;
  	    for (key in hash) {
  	      handlers = hash[key];
  	      if (isArray(handlers)) {
  	        for (i = 0, j = handlers.length; i < j; i++) {
  	          register(vm, action, key, handlers[i]);
  	        }
  	      } else {
  	        register(vm, action, key, handlers);
  	      }
  	    }
  	  }
  
  	  /**
  	   * Helper to register an event/watch callback.
  	   *
  	   * @param {Vue} vm
  	   * @param {String} action
  	   * @param {String} key
  	   * @param {Function|String|Object} handler
  	   * @param {Object} [options]
  	   */
  
  	  function register(vm, action, key, handler, options) {
  	    var type = typeof handler;
  	    if (type === 'function') {
  	      vm[action](key, handler, options);
  	    } else if (type === 'string') {
  	      var methods = vm.$options.methods;
  	      var method = methods && methods[handler];
  	      if (method) {
  	        vm[action](key, method, options);
  	      } else {
  	        process.env.NODE_ENV !== 'production' && warn('Unknown method: "' + handler + '" when ' + 'registering callback for ' + action + ': "' + key + '".', vm);
  	      }
  	    } else if (handler && type === 'object') {
  	      register(vm, action, key, handler.handler, handler);
  	    }
  	  }
  
  	  /**
  	   * Setup recursive attached/detached calls
  	   */
  
  	  Vue.prototype._initDOMHooks = function () {
  	    this.$on('hook:attached', onAttached);
  	    this.$on('hook:detached', onDetached);
  	  };
  
  	  /**
  	   * Callback to recursively call attached hook on children
  	   */
  
  	  function onAttached() {
  	    if (!this._isAttached) {
  	      this._isAttached = true;
  	      this.$children.forEach(callAttach);
  	    }
  	  }
  
  	  /**
  	   * Iterator to call attached hook
  	   *
  	   * @param {Vue} child
  	   */
  
  	  function callAttach(child) {
  	    if (!child._isAttached && inDoc(child.$el)) {
  	      child._callHook('attached');
  	    }
  	  }
  
  	  /**
  	   * Callback to recursively call detached hook on children
  	   */
  
  	  function onDetached() {
  	    if (this._isAttached) {
  	      this._isAttached = false;
  	      this.$children.forEach(callDetach);
  	    }
  	  }
  
  	  /**
  	   * Iterator to call detached hook
  	   *
  	   * @param {Vue} child
  	   */
  
  	  function callDetach(child) {
  	    if (child._isAttached && !inDoc(child.$el)) {
  	      child._callHook('detached');
  	    }
  	  }
  
  	  /**
  	   * Trigger all handlers for a hook
  	   *
  	   * @param {String} hook
  	   */
  
  	  Vue.prototype._callHook = function (hook) {
  	    this.$emit('pre-hook:' + hook);
  	    var handlers = this.$options[hook];
  	    if (handlers) {
  	      for (var i = 0, j = handlers.length; i < j; i++) {
  	        handlers[i].call(this);
  	      }
  	    }
  	    this.$emit('hook:' + hook);
  	  };
  	}
  
  	function noop() {}
  
  	/**
  	 * A directive links a DOM element with a piece of data,
  	 * which is the result of evaluating an expression.
  	 * It registers a watcher with the expression and calls
  	 * the DOM update function when a change is triggered.
  	 *
  	 * @param {Object} descriptor
  	 *                 - {String} name
  	 *                 - {Object} def
  	 *                 - {String} expression
  	 *                 - {Array<Object>} [filters]
  	 *                 - {Object} [modifiers]
  	 *                 - {Boolean} literal
  	 *                 - {String} attr
  	 *                 - {String} arg
  	 *                 - {String} raw
  	 *                 - {String} [ref]
  	 *                 - {Array<Object>} [interp]
  	 *                 - {Boolean} [hasOneTime]
  	 * @param {Vue} vm
  	 * @param {Node} el
  	 * @param {Vue} [host] - transclusion host component
  	 * @param {Object} [scope] - v-for scope
  	 * @param {Fragment} [frag] - owner fragment
  	 * @constructor
  	 */
  	function Directive(descriptor, vm, el, host, scope, frag) {
  	  this.vm = vm;
  	  this.el = el;
  	  // copy descriptor properties
  	  this.descriptor = descriptor;
  	  this.name = descriptor.name;
  	  this.expression = descriptor.expression;
  	  this.arg = descriptor.arg;
  	  this.modifiers = descriptor.modifiers;
  	  this.filters = descriptor.filters;
  	  this.literal = this.modifiers && this.modifiers.literal;
  	  // private
  	  this._locked = false;
  	  this._bound = false;
  	  this._listeners = null;
  	  // link context
  	  this._host = host;
  	  this._scope = scope;
  	  this._frag = frag;
  	  // store directives on node in dev mode
  	  if (process.env.NODE_ENV !== 'production' && this.el) {
  	    this.el._vue_directives = this.el._vue_directives || [];
  	    this.el._vue_directives.push(this);
  	  }
  	}
  
  	/**
  	 * Initialize the directive, mixin definition properties,
  	 * setup the watcher, call definition bind() and update()
  	 * if present.
  	 */
  
  	Directive.prototype._bind = function () {
  	  var name = this.name;
  	  var descriptor = this.descriptor;
  
  	  // remove attribute
  	  if ((name !== 'cloak' || this.vm._isCompiled) && this.el && this.el.removeAttribute) {
  	    var attr = descriptor.attr || 'v-' + name;
  	    this.el.removeAttribute(attr);
  	  }
  
  	  // copy def properties
  	  var def = descriptor.def;
  	  if (typeof def === 'function') {
  	    this.update = def;
  	  } else {
  	    extend(this, def);
  	  }
  
  	  // setup directive params
  	  this._setupParams();
  
  	  // initial bind
  	  if (this.bind) {
  	    this.bind();
  	  }
  	  this._bound = true;
  
  	  if (this.literal) {
  	    this.update && this.update(descriptor.raw);
  	  } else if ((this.expression || this.modifiers) && (this.update || this.twoWay) && !this._checkStatement()) {
  	    // wrapped updater for context
  	    var dir = this;
  	    if (this.update) {
  	      this._update = function (val, oldVal) {
  	        if (!dir._locked) {
  	          dir.update(val, oldVal);
  	        }
  	      };
  	    } else {
  	      this._update = noop;
  	    }
  	    var preProcess = this._preProcess ? bind(this._preProcess, this) : null;
  	    var postProcess = this._postProcess ? bind(this._postProcess, this) : null;
  	    var watcher = this._watcher = new Watcher(this.vm, this.expression, this._update, // callback
  	    {
  	      filters: this.filters,
  	      twoWay: this.twoWay,
  	      deep: this.deep,
  	      preProcess: preProcess,
  	      postProcess: postProcess,
  	      scope: this._scope
  	    });
  	    // v-model with inital inline value need to sync back to
  	    // model instead of update to DOM on init. They would
  	    // set the afterBind hook to indicate that.
  	    if (this.afterBind) {
  	      this.afterBind();
  	    } else if (this.update) {
  	      this.update(watcher.value);
  	    }
  	  }
  	};
  
  	/**
  	 * Setup all param attributes, e.g. track-by,
  	 * transition-mode, etc...
  	 */
  
  	Directive.prototype._setupParams = function () {
  	  if (!this.params) {
  	    return;
  	  }
  	  var params = this.params;
  	  // swap the params array with a fresh object.
  	  this.params = Object.create(null);
  	  var i = params.length;
  	  var key, val, mappedKey;
  	  while (i--) {
  	    key = hyphenate(params[i]);
  	    mappedKey = camelize(key);
  	    val = getBindAttr(this.el, key);
  	    if (val != null) {
  	      // dynamic
  	      this._setupParamWatcher(mappedKey, val);
  	    } else {
  	      // static
  	      val = getAttr(this.el, key);
  	      if (val != null) {
  	        this.params[mappedKey] = val === '' ? true : val;
  	      }
  	    }
  	  }
  	};
  
  	/**
  	 * Setup a watcher for a dynamic param.
  	 *
  	 * @param {String} key
  	 * @param {String} expression
  	 */
  
  	Directive.prototype._setupParamWatcher = function (key, expression) {
  	  var self = this;
  	  var called = false;
  	  var unwatch = (this._scope || this.vm).$watch(expression, function (val, oldVal) {
  	    self.params[key] = val;
  	    // since we are in immediate mode,
  	    // only call the param change callbacks if this is not the first update.
  	    if (called) {
  	      var cb = self.paramWatchers && self.paramWatchers[key];
  	      if (cb) {
  	        cb.call(self, val, oldVal);
  	      }
  	    } else {
  	      called = true;
  	    }
  	  }, {
  	    immediate: true,
  	    user: false
  	  });(this._paramUnwatchFns || (this._paramUnwatchFns = [])).push(unwatch);
  	};
  
  	/**
  	 * Check if the directive is a function caller
  	 * and if the expression is a callable one. If both true,
  	 * we wrap up the expression and use it as the event
  	 * handler.
  	 *
  	 * e.g. on-click="a++"
  	 *
  	 * @return {Boolean}
  	 */
  
  	Directive.prototype._checkStatement = function () {
  	  var expression = this.expression;
  	  if (expression && this.acceptStatement && !isSimplePath(expression)) {
  	    var fn = parseExpression(expression).get;
  	    var scope = this._scope || this.vm;
  	    var handler = function handler(e) {
  	      scope.$event = e;
  	      fn.call(scope, scope);
  	      scope.$event = null;
  	    };
  	    if (this.filters) {
  	      handler = scope._applyFilters(handler, null, this.filters);
  	    }
  	    this.update(handler);
  	    return true;
  	  }
  	};
  
  	/**
  	 * Set the corresponding value with the setter.
  	 * This should only be used in two-way directives
  	 * e.g. v-model.
  	 *
  	 * @param {*} value
  	 * @public
  	 */
  
  	Directive.prototype.set = function (value) {
  	  /* istanbul ignore else */
  	  if (this.twoWay) {
  	    this._withLock(function () {
  	      this._watcher.set(value);
  	    });
  	  } else if (process.env.NODE_ENV !== 'production') {
  	    warn('Directive.set() can only be used inside twoWay' + 'directives.');
  	  }
  	};
  
  	/**
  	 * Execute a function while preventing that function from
  	 * triggering updates on this directive instance.
  	 *
  	 * @param {Function} fn
  	 */
  
  	Directive.prototype._withLock = function (fn) {
  	  var self = this;
  	  self._locked = true;
  	  fn.call(self);
  	  nextTick(function () {
  	    self._locked = false;
  	  });
  	};
  
  	/**
  	 * Convenience method that attaches a DOM event listener
  	 * to the directive element and autometically tears it down
  	 * during unbind.
  	 *
  	 * @param {String} event
  	 * @param {Function} handler
  	 * @param {Boolean} [useCapture]
  	 */
  
  	Directive.prototype.on = function (event, handler, useCapture) {
  	  on(this.el, event, handler, useCapture);(this._listeners || (this._listeners = [])).push([event, handler]);
  	};
  
  	/**
  	 * Teardown the watcher and call unbind.
  	 */
  
  	Directive.prototype._teardown = function () {
  	  if (this._bound) {
  	    this._bound = false;
  	    if (this.unbind) {
  	      this.unbind();
  	    }
  	    if (this._watcher) {
  	      this._watcher.teardown();
  	    }
  	    var listeners = this._listeners;
  	    var i;
  	    if (listeners) {
  	      i = listeners.length;
  	      while (i--) {
  	        off(this.el, listeners[i][0], listeners[i][1]);
  	      }
  	    }
  	    var unwatchFns = this._paramUnwatchFns;
  	    if (unwatchFns) {
  	      i = unwatchFns.length;
  	      while (i--) {
  	        unwatchFns[i]();
  	      }
  	    }
  	    if (process.env.NODE_ENV !== 'production' && this.el) {
  	      this.el._vue_directives.$remove(this);
  	    }
  	    this.vm = this.el = this._watcher = this._listeners = null;
  	  }
  	};
  
  	function lifecycleMixin (Vue) {
  	  /**
  	   * Update v-ref for component.
  	   *
  	   * @param {Boolean} remove
  	   */
  
  	  Vue.prototype._updateRef = function (remove) {
  	    var ref = this.$options._ref;
  	    if (ref) {
  	      var refs = (this._scope || this._context).$refs;
  	      if (remove) {
  	        if (refs[ref] === this) {
  	          refs[ref] = null;
  	        }
  	      } else {
  	        refs[ref] = this;
  	      }
  	    }
  	  };
  
  	  /**
  	   * Transclude, compile and link element.
  	   *
  	   * If a pre-compiled linker is available, that means the
  	   * passed in element will be pre-transcluded and compiled
  	   * as well - all we need to do is to call the linker.
  	   *
  	   * Otherwise we need to call transclude/compile/link here.
  	   *
  	   * @param {Element} el
  	   */
  
  	  Vue.prototype._compile = function (el) {
  	    var options = this.$options;
  
  	    // transclude and init element
  	    // transclude can potentially replace original
  	    // so we need to keep reference; this step also injects
  	    // the template and caches the original attributes
  	    // on the container node and replacer node.
  	    var original = el;
  	    el = transclude(el, options);
  	    this._initElement(el);
  
  	    // handle v-pre on root node (#2026)
  	    if (el.nodeType === 1 && getAttr(el, 'v-pre') !== null) {
  	      return;
  	    }
  
  	    // root is always compiled per-instance, because
  	    // container attrs and props can be different every time.
  	    var contextOptions = this._context && this._context.$options;
  	    var rootLinker = compileRoot(el, options, contextOptions);
  
  	    // resolve slot distribution
  	    resolveSlots(this, options._content);
  
  	    // compile and link the rest
  	    var contentLinkFn;
  	    var ctor = this.constructor;
  	    // component compilation can be cached
  	    // as long as it's not using inline-template
  	    if (options._linkerCachable) {
  	      contentLinkFn = ctor.linker;
  	      if (!contentLinkFn) {
  	        contentLinkFn = ctor.linker = compile(el, options);
  	      }
  	    }
  
  	    // link phase
  	    // make sure to link root with prop scope!
  	    var rootUnlinkFn = rootLinker(this, el, this._scope);
  	    var contentUnlinkFn = contentLinkFn ? contentLinkFn(this, el) : compile(el, options)(this, el);
  
  	    // register composite unlink function
  	    // to be called during instance destruction
  	    this._unlinkFn = function () {
  	      rootUnlinkFn();
  	      // passing destroying: true to avoid searching and
  	      // splicing the directives
  	      contentUnlinkFn(true);
  	    };
  
  	    // finally replace original
  	    if (options.replace) {
  	      replace(original, el);
  	    }
  
  	    this._isCompiled = true;
  	    this._callHook('compiled');
  	  };
  
  	  /**
  	   * Initialize instance element. Called in the public
  	   * $mount() method.
  	   *
  	   * @param {Element} el
  	   */
  
  	  Vue.prototype._initElement = function (el) {
  	    if (isFragment(el)) {
  	      this._isFragment = true;
  	      this.$el = this._fragmentStart = el.firstChild;
  	      this._fragmentEnd = el.lastChild;
  	      // set persisted text anchors to empty
  	      if (this._fragmentStart.nodeType === 3) {
  	        this._fragmentStart.data = this._fragmentEnd.data = '';
  	      }
  	      this._fragment = el;
  	    } else {
  	      this.$el = el;
  	    }
  	    this.$el.__vue__ = this;
  	    this._callHook('beforeCompile');
  	  };
  
  	  /**
  	   * Create and bind a directive to an element.
  	   *
  	   * @param {Object} descriptor - parsed directive descriptor
  	   * @param {Node} node   - target node
  	   * @param {Vue} [host] - transclusion host component
  	   * @param {Object} [scope] - v-for scope
  	   * @param {Fragment} [frag] - owner fragment
  	   */
  
  	  Vue.prototype._bindDir = function (descriptor, node, host, scope, frag) {
  	    this._directives.push(new Directive(descriptor, this, node, host, scope, frag));
  	  };
  
  	  /**
  	   * Teardown an instance, unobserves the data, unbind all the
  	   * directives, turn off all the event listeners, etc.
  	   *
  	   * @param {Boolean} remove - whether to remove the DOM node.
  	   * @param {Boolean} deferCleanup - if true, defer cleanup to
  	   *                                 be called later
  	   */
  
  	  Vue.prototype._destroy = function (remove, deferCleanup) {
  	    if (this._isBeingDestroyed) {
  	      if (!deferCleanup) {
  	        this._cleanup();
  	      }
  	      return;
  	    }
  
  	    var destroyReady;
  	    var pendingRemoval;
  
  	    var self = this;
  	    // Cleanup should be called either synchronously or asynchronoysly as
  	    // callback of this.$remove(), or if remove and deferCleanup are false.
  	    // In any case it should be called after all other removing, unbinding and
  	    // turning of is done
  	    var cleanupIfPossible = function cleanupIfPossible() {
  	      if (destroyReady && !pendingRemoval && !deferCleanup) {
  	        self._cleanup();
  	      }
  	    };
  
  	    // remove DOM element
  	    if (remove && this.$el) {
  	      pendingRemoval = true;
  	      this.$remove(function () {
  	        pendingRemoval = false;
  	        cleanupIfPossible();
  	      });
  	    }
  
  	    this._callHook('beforeDestroy');
  	    this._isBeingDestroyed = true;
  	    var i;
  	    // remove self from parent. only necessary
  	    // if parent is not being destroyed as well.
  	    var parent = this.$parent;
  	    if (parent && !parent._isBeingDestroyed) {
  	      parent.$children.$remove(this);
  	      // unregister ref (remove: true)
  	      this._updateRef(true);
  	    }
  	    // destroy all children.
  	    i = this.$children.length;
  	    while (i--) {
  	      this.$children[i].$destroy();
  	    }
  	    // teardown props
  	    if (this._propsUnlinkFn) {
  	      this._propsUnlinkFn();
  	    }
  	    // teardown all directives. this also tearsdown all
  	    // directive-owned watchers.
  	    if (this._unlinkFn) {
  	      this._unlinkFn();
  	    }
  	    i = this._watchers.length;
  	    while (i--) {
  	      this._watchers[i].teardown();
  	    }
  	    // remove reference to self on $el
  	    if (this.$el) {
  	      this.$el.__vue__ = null;
  	    }
  
  	    destroyReady = true;
  	    cleanupIfPossible();
  	  };
  
  	  /**
  	   * Clean up to ensure garbage collection.
  	   * This is called after the leave transition if there
  	   * is any.
  	   */
  
  	  Vue.prototype._cleanup = function () {
  	    if (this._isDestroyed) {
  	      return;
  	    }
  	    // remove self from owner fragment
  	    // do it in cleanup so that we can call $destroy with
  	    // defer right when a fragment is about to be removed.
  	    if (this._frag) {
  	      this._frag.children.$remove(this);
  	    }
  	    // remove reference from data ob
  	    // frozen object may not have observer.
  	    if (this._data && this._data.__ob__) {
  	      this._data.__ob__.removeVm(this);
  	    }
  	    // Clean up references to private properties and other
  	    // instances. preserve reference to _data so that proxy
  	    // accessors still work. The only potential side effect
  	    // here is that mutating the instance after it's destroyed
  	    // may affect the state of other components that are still
  	    // observing the same object, but that seems to be a
  	    // reasonable responsibility for the user rather than
  	    // always throwing an error on them.
  	    this.$el = this.$parent = this.$root = this.$children = this._watchers = this._context = this._scope = this._directives = null;
  	    // call the last hook...
  	    this._isDestroyed = true;
  	    this._callHook('destroyed');
  	    // turn off all instance listeners.
  	    this.$off();
  	  };
  	}
  
  	function miscMixin (Vue) {
  	  /**
  	   * Apply a list of filter (descriptors) to a value.
  	   * Using plain for loops here because this will be called in
  	   * the getter of any watcher with filters so it is very
  	   * performance sensitive.
  	   *
  	   * @param {*} value
  	   * @param {*} [oldValue]
  	   * @param {Array} filters
  	   * @param {Boolean} write
  	   * @return {*}
  	   */
  
  	  Vue.prototype._applyFilters = function (value, oldValue, filters, write) {
  	    var filter, fn, args, arg, offset, i, l, j, k;
  	    for (i = 0, l = filters.length; i < l; i++) {
  	      filter = filters[write ? l - i - 1 : i];
  	      fn = resolveAsset(this.$options, 'filters', filter.name, true);
  	      if (!fn) continue;
  	      fn = write ? fn.write : fn.read || fn;
  	      if (typeof fn !== 'function') continue;
  	      args = write ? [value, oldValue] : [value];
  	      offset = write ? 2 : 1;
  	      if (filter.args) {
  	        for (j = 0, k = filter.args.length; j < k; j++) {
  	          arg = filter.args[j];
  	          args[j + offset] = arg.dynamic ? this.$get(arg.value) : arg.value;
  	        }
  	      }
  	      value = fn.apply(this, args);
  	    }
  	    return value;
  	  };
  
  	  /**
  	   * Resolve a component, depending on whether the component
  	   * is defined normally or using an async factory function.
  	   * Resolves synchronously if already resolved, otherwise
  	   * resolves asynchronously and caches the resolved
  	   * constructor on the factory.
  	   *
  	   * @param {String|Function} value
  	   * @param {Function} cb
  	   */
  
  	  Vue.prototype._resolveComponent = function (value, cb) {
  	    var factory;
  	    if (typeof value === 'function') {
  	      factory = value;
  	    } else {
  	      factory = resolveAsset(this.$options, 'components', value, true);
  	    }
  	    /* istanbul ignore if */
  	    if (!factory) {
  	      return;
  	    }
  	    // async component factory
  	    if (!factory.options) {
  	      if (factory.resolved) {
  	        // cached
  	        cb(factory.resolved);
  	      } else if (factory.requested) {
  	        // pool callbacks
  	        factory.pendingCallbacks.push(cb);
  	      } else {
  	        factory.requested = true;
  	        var cbs = factory.pendingCallbacks = [cb];
  	        factory.call(this, function resolve(res) {
  	          if (isPlainObject(res)) {
  	            res = Vue.extend(res);
  	          }
  	          // cache resolved
  	          factory.resolved = res;
  	          // invoke callbacks
  	          for (var i = 0, l = cbs.length; i < l; i++) {
  	            cbs[i](res);
  	          }
  	        }, function reject(reason) {
  	          process.env.NODE_ENV !== 'production' && warn('Failed to resolve async component' + (typeof value === 'string' ? ': ' + value : '') + '. ' + (reason ? '\nReason: ' + reason : ''));
  	        });
  	      }
  	    } else {
  	      // normal component
  	      cb(factory);
  	    }
  	  };
  	}
  
  	var filterRE$1 = /[^|]\|[^|]/;
  
  	function dataAPI (Vue) {
  	  /**
  	   * Get the value from an expression on this vm.
  	   *
  	   * @param {String} exp
  	   * @param {Boolean} [asStatement]
  	   * @return {*}
  	   */
  
  	  Vue.prototype.$get = function (exp, asStatement) {
  	    var res = parseExpression(exp);
  	    if (res) {
  	      if (asStatement) {
  	        var self = this;
  	        return function statementHandler() {
  	          self.$arguments = toArray(arguments);
  	          var result = res.get.call(self, self);
  	          self.$arguments = null;
  	          return result;
  	        };
  	      } else {
  	        try {
  	          return res.get.call(this, this);
  	        } catch (e) {}
  	      }
  	    }
  	  };
  
  	  /**
  	   * Set the value from an expression on this vm.
  	   * The expression must be a valid left-hand
  	   * expression in an assignment.
  	   *
  	   * @param {String} exp
  	   * @param {*} val
  	   */
  
  	  Vue.prototype.$set = function (exp, val) {
  	    var res = parseExpression(exp, true);
  	    if (res && res.set) {
  	      res.set.call(this, this, val);
  	    }
  	  };
  
  	  /**
  	   * Delete a property on the VM
  	   *
  	   * @param {String} key
  	   */
  
  	  Vue.prototype.$delete = function (key) {
  	    del(this._data, key);
  	  };
  
  	  /**
  	   * Watch an expression, trigger callback when its
  	   * value changes.
  	   *
  	   * @param {String|Function} expOrFn
  	   * @param {Function} cb
  	   * @param {Object} [options]
  	   *                 - {Boolean} deep
  	   *                 - {Boolean} immediate
  	   * @return {Function} - unwatchFn
  	   */
  
  	  Vue.prototype.$watch = function (expOrFn, cb, options) {
  	    var vm = this;
  	    var parsed;
  	    if (typeof expOrFn === 'string') {
  	      parsed = parseDirective(expOrFn);
  	      expOrFn = parsed.expression;
  	    }
  	    var watcher = new Watcher(vm, expOrFn, cb, {
  	      deep: options && options.deep,
  	      sync: options && options.sync,
  	      filters: parsed && parsed.filters,
  	      user: !options || options.user !== false
  	    });
  	    if (options && options.immediate) {
  	      cb.call(vm, watcher.value);
  	    }
  	    return function unwatchFn() {
  	      watcher.teardown();
  	    };
  	  };
  
  	  /**
  	   * Evaluate a text directive, including filters.
  	   *
  	   * @param {String} text
  	   * @param {Boolean} [asStatement]
  	   * @return {String}
  	   */
  
  	  Vue.prototype.$eval = function (text, asStatement) {
  	    // check for filters.
  	    if (filterRE$1.test(text)) {
  	      var dir = parseDirective(text);
  	      // the filter regex check might give false positive
  	      // for pipes inside strings, so it's possible that
  	      // we don't get any filters here
  	      var val = this.$get(dir.expression, asStatement);
  	      return dir.filters ? this._applyFilters(val, null, dir.filters) : val;
  	    } else {
  	      // no filter
  	      return this.$get(text, asStatement);
  	    }
  	  };
  
  	  /**
  	   * Interpolate a piece of template text.
  	   *
  	   * @param {String} text
  	   * @return {String}
  	   */
  
  	  Vue.prototype.$interpolate = function (text) {
  	    var tokens = parseText(text);
  	    var vm = this;
  	    if (tokens) {
  	      if (tokens.length === 1) {
  	        return vm.$eval(tokens[0].value) + '';
  	      } else {
  	        return tokens.map(function (token) {
  	          return token.tag ? vm.$eval(token.value) : token.value;
  	        }).join('');
  	      }
  	    } else {
  	      return text;
  	    }
  	  };
  
  	  /**
  	   * Log instance data as a plain JS object
  	   * so that it is easier to inspect in console.
  	   * This method assumes console is available.
  	   *
  	   * @param {String} [path]
  	   */
  
  	  Vue.prototype.$log = function (path) {
  	    var data = path ? getPath(this._data, path) : this._data;
  	    if (data) {
  	      data = clean(data);
  	    }
  	    // include computed fields
  	    if (!path) {
  	      var key;
  	      for (key in this.$options.computed) {
  	        data[key] = clean(this[key]);
  	      }
  	      if (this._props) {
  	        for (key in this._props) {
  	          data[key] = clean(this[key]);
  	        }
  	      }
  	    }
  	    console.log(data);
  	  };
  
  	  /**
  	   * "clean" a getter/setter converted object into a plain
  	   * object copy.
  	   *
  	   * @param {Object} - obj
  	   * @return {Object}
  	   */
  
  	  function clean(obj) {
  	    return JSON.parse(JSON.stringify(obj));
  	  }
  	}
  
  	function domAPI (Vue) {
  	  /**
  	   * Convenience on-instance nextTick. The callback is
  	   * auto-bound to the instance, and this avoids component
  	   * modules having to rely on the global Vue.
  	   *
  	   * @param {Function} fn
  	   */
  
  	  Vue.prototype.$nextTick = function (fn) {
  	    nextTick(fn, this);
  	  };
  
  	  /**
  	   * Append instance to target
  	   *
  	   * @param {Node} target
  	   * @param {Function} [cb]
  	   * @param {Boolean} [withTransition] - defaults to true
  	   */
  
  	  Vue.prototype.$appendTo = function (target, cb, withTransition) {
  	    return insert(this, target, cb, withTransition, append, appendWithTransition);
  	  };
  
  	  /**
  	   * Prepend instance to target
  	   *
  	   * @param {Node} target
  	   * @param {Function} [cb]
  	   * @param {Boolean} [withTransition] - defaults to true
  	   */
  
  	  Vue.prototype.$prependTo = function (target, cb, withTransition) {
  	    target = query(target);
  	    if (target.hasChildNodes()) {
  	      this.$before(target.firstChild, cb, withTransition);
  	    } else {
  	      this.$appendTo(target, cb, withTransition);
  	    }
  	    return this;
  	  };
  
  	  /**
  	   * Insert instance before target
  	   *
  	   * @param {Node} target
  	   * @param {Function} [cb]
  	   * @param {Boolean} [withTransition] - defaults to true
  	   */
  
  	  Vue.prototype.$before = function (target, cb, withTransition) {
  	    return insert(this, target, cb, withTransition, beforeWithCb, beforeWithTransition);
  	  };
  
  	  /**
  	   * Insert instance after target
  	   *
  	   * @param {Node} target
  	   * @param {Function} [cb]
  	   * @param {Boolean} [withTransition] - defaults to true
  	   */
  
  	  Vue.prototype.$after = function (target, cb, withTransition) {
  	    target = query(target);
  	    if (target.nextSibling) {
  	      this.$before(target.nextSibling, cb, withTransition);
  	    } else {
  	      this.$appendTo(target.parentNode, cb, withTransition);
  	    }
  	    return this;
  	  };
  
  	  /**
  	   * Remove instance from DOM
  	   *
  	   * @param {Function} [cb]
  	   * @param {Boolean} [withTransition] - defaults to true
  	   */
  
  	  Vue.prototype.$remove = function (cb, withTransition) {
  	    if (!this.$el.parentNode) {
  	      return cb && cb();
  	    }
  	    var inDocument = this._isAttached && inDoc(this.$el);
  	    // if we are not in document, no need to check
  	    // for transitions
  	    if (!inDocument) withTransition = false;
  	    var self = this;
  	    var realCb = function realCb() {
  	      if (inDocument) self._callHook('detached');
  	      if (cb) cb();
  	    };
  	    if (this._isFragment) {
  	      removeNodeRange(this._fragmentStart, this._fragmentEnd, this, this._fragment, realCb);
  	    } else {
  	      var op = withTransition === false ? removeWithCb : removeWithTransition;
  	      op(this.$el, this, realCb);
  	    }
  	    return this;
  	  };
  
  	  /**
  	   * Shared DOM insertion function.
  	   *
  	   * @param {Vue} vm
  	   * @param {Element} target
  	   * @param {Function} [cb]
  	   * @param {Boolean} [withTransition]
  	   * @param {Function} op1 - op for non-transition insert
  	   * @param {Function} op2 - op for transition insert
  	   * @return vm
  	   */
  
  	  function insert(vm, target, cb, withTransition, op1, op2) {
  	    target = query(target);
  	    var targetIsDetached = !inDoc(target);
  	    var op = withTransition === false || targetIsDetached ? op1 : op2;
  	    var shouldCallHook = !targetIsDetached && !vm._isAttached && !inDoc(vm.$el);
  	    if (vm._isFragment) {
  	      mapNodeRange(vm._fragmentStart, vm._fragmentEnd, function (node) {
  	        op(node, target, vm);
  	      });
  	      cb && cb();
  	    } else {
  	      op(vm.$el, target, vm, cb);
  	    }
  	    if (shouldCallHook) {
  	      vm._callHook('attached');
  	    }
  	    return vm;
  	  }
  
  	  /**
  	   * Check for selectors
  	   *
  	   * @param {String|Element} el
  	   */
  
  	  function query(el) {
  	    return typeof el === 'string' ? document.querySelector(el) : el;
  	  }
  
  	  /**
  	   * Append operation that takes a callback.
  	   *
  	   * @param {Node} el
  	   * @param {Node} target
  	   * @param {Vue} vm - unused
  	   * @param {Function} [cb]
  	   */
  
  	  function append(el, target, vm, cb) {
  	    target.appendChild(el);
  	    if (cb) cb();
  	  }
  
  	  /**
  	   * InsertBefore operation that takes a callback.
  	   *
  	   * @param {Node} el
  	   * @param {Node} target
  	   * @param {Vue} vm - unused
  	   * @param {Function} [cb]
  	   */
  
  	  function beforeWithCb(el, target, vm, cb) {
  	    before(el, target);
  	    if (cb) cb();
  	  }
  
  	  /**
  	   * Remove operation that takes a callback.
  	   *
  	   * @param {Node} el
  	   * @param {Vue} vm - unused
  	   * @param {Function} [cb]
  	   */
  
  	  function removeWithCb(el, vm, cb) {
  	    remove(el);
  	    if (cb) cb();
  	  }
  	}
  
  	function eventsAPI (Vue) {
  	  /**
  	   * Listen on the given `event` with `fn`.
  	   *
  	   * @param {String} event
  	   * @param {Function} fn
  	   */
  
  	  Vue.prototype.$on = function (event, fn) {
  	    (this._events[event] || (this._events[event] = [])).push(fn);
  	    modifyListenerCount(this, event, 1);
  	    return this;
  	  };
  
  	  /**
  	   * Adds an `event` listener that will be invoked a single
  	   * time then automatically removed.
  	   *
  	   * @param {String} event
  	   * @param {Function} fn
  	   */
  
  	  Vue.prototype.$once = function (event, fn) {
  	    var self = this;
  	    function on() {
  	      self.$off(event, on);
  	      fn.apply(this, arguments);
  	    }
  	    on.fn = fn;
  	    this.$on(event, on);
  	    return this;
  	  };
  
  	  /**
  	   * Remove the given callback for `event` or all
  	   * registered callbacks.
  	   *
  	   * @param {String} event
  	   * @param {Function} fn
  	   */
  
  	  Vue.prototype.$off = function (event, fn) {
  	    var cbs;
  	    // all
  	    if (!arguments.length) {
  	      if (this.$parent) {
  	        for (event in this._events) {
  	          cbs = this._events[event];
  	          if (cbs) {
  	            modifyListenerCount(this, event, -cbs.length);
  	          }
  	        }
  	      }
  	      this._events = {};
  	      return this;
  	    }
  	    // specific event
  	    cbs = this._events[event];
  	    if (!cbs) {
  	      return this;
  	    }
  	    if (arguments.length === 1) {
  	      modifyListenerCount(this, event, -cbs.length);
  	      this._events[event] = null;
  	      return this;
  	    }
  	    // specific handler
  	    var cb;
  	    var i = cbs.length;
  	    while (i--) {
  	      cb = cbs[i];
  	      if (cb === fn || cb.fn === fn) {
  	        modifyListenerCount(this, event, -1);
  	        cbs.splice(i, 1);
  	        break;
  	      }
  	    }
  	    return this;
  	  };
  
  	  /**
  	   * Trigger an event on self.
  	   *
  	   * @param {String|Object} event
  	   * @return {Boolean} shouldPropagate
  	   */
  
  	  Vue.prototype.$emit = function (event) {
  	    var isSource = typeof event === 'string';
  	    event = isSource ? event : event.name;
  	    var cbs = this._events[event];
  	    var shouldPropagate = isSource || !cbs;
  	    if (cbs) {
  	      cbs = cbs.length > 1 ? toArray(cbs) : cbs;
  	      // this is a somewhat hacky solution to the question raised
  	      // in #2102: for an inline component listener like <comp @test="doThis">,
  	      // the propagation handling is somewhat broken. Therefore we
  	      // need to treat these inline callbacks differently.
  	      var hasParentCbs = isSource && cbs.some(function (cb) {
  	        return cb._fromParent;
  	      });
  	      if (hasParentCbs) {
  	        shouldPropagate = false;
  	      }
  	      var args = toArray(arguments, 1);
  	      for (var i = 0, l = cbs.length; i < l; i++) {
  	        var cb = cbs[i];
  	        var res = cb.apply(this, args);
  	        if (res === true && (!hasParentCbs || cb._fromParent)) {
  	          shouldPropagate = true;
  	        }
  	      }
  	    }
  	    return shouldPropagate;
  	  };
  
  	  /**
  	   * Recursively broadcast an event to all children instances.
  	   *
  	   * @param {String|Object} event
  	   * @param {...*} additional arguments
  	   */
  
  	  Vue.prototype.$broadcast = function (event) {
  	    var isSource = typeof event === 'string';
  	    event = isSource ? event : event.name;
  	    // if no child has registered for this event,
  	    // then there's no need to broadcast.
  	    if (!this._eventsCount[event]) return;
  	    var children = this.$children;
  	    var args = toArray(arguments);
  	    if (isSource) {
  	      // use object event to indicate non-source emit
  	      // on children
  	      args[0] = { name: event, source: this };
  	    }
  	    for (var i = 0, l = children.length; i < l; i++) {
  	      var child = children[i];
  	      var shouldPropagate = child.$emit.apply(child, args);
  	      if (shouldPropagate) {
  	        child.$broadcast.apply(child, args);
  	      }
  	    }
  	    return this;
  	  };
  
  	  /**
  	   * Recursively propagate an event up the parent chain.
  	   *
  	   * @param {String} event
  	   * @param {...*} additional arguments
  	   */
  
  	  Vue.prototype.$dispatch = function (event) {
  	    var shouldPropagate = this.$emit.apply(this, arguments);
  	    if (!shouldPropagate) return;
  	    var parent = this.$parent;
  	    var args = toArray(arguments);
  	    // use object event to indicate non-source emit
  	    // on parents
  	    args[0] = { name: event, source: this };
  	    while (parent) {
  	      shouldPropagate = parent.$emit.apply(parent, args);
  	      parent = shouldPropagate ? parent.$parent : null;
  	    }
  	    return this;
  	  };
  
  	  /**
  	   * Modify the listener counts on all parents.
  	   * This bookkeeping allows $broadcast to return early when
  	   * no child has listened to a certain event.
  	   *
  	   * @param {Vue} vm
  	   * @param {String} event
  	   * @param {Number} count
  	   */
  
  	  var hookRE = /^hook:/;
  	  function modifyListenerCount(vm, event, count) {
  	    var parent = vm.$parent;
  	    // hooks do not get broadcasted so no need
  	    // to do bookkeeping for them
  	    if (!parent || !count || hookRE.test(event)) return;
  	    while (parent) {
  	      parent._eventsCount[event] = (parent._eventsCount[event] || 0) + count;
  	      parent = parent.$parent;
  	    }
  	  }
  	}
  
  	function lifecycleAPI (Vue) {
  	  /**
  	   * Set instance target element and kick off the compilation
  	   * process. The passed in `el` can be a selector string, an
  	   * existing Element, or a DocumentFragment (for block
  	   * instances).
  	   *
  	   * @param {Element|DocumentFragment|string} el
  	   * @public
  	   */
  
  	  Vue.prototype.$mount = function (el) {
  	    if (this._isCompiled) {
  	      process.env.NODE_ENV !== 'production' && warn('$mount() should be called only once.', this);
  	      return;
  	    }
  	    el = query(el);
  	    if (!el) {
  	      el = document.createElement('div');
  	    }
  	    this._compile(el);
  	    this._initDOMHooks();
  	    if (inDoc(this.$el)) {
  	      this._callHook('attached');
  	      ready.call(this);
  	    } else {
  	      this.$once('hook:attached', ready);
  	    }
  	    return this;
  	  };
  
  	  /**
  	   * Mark an instance as ready.
  	   */
  
  	  function ready() {
  	    this._isAttached = true;
  	    this._isReady = true;
  	    this._callHook('ready');
  	  }
  
  	  /**
  	   * Teardown the instance, simply delegate to the internal
  	   * _destroy.
  	   *
  	   * @param {Boolean} remove
  	   * @param {Boolean} deferCleanup
  	   */
  
  	  Vue.prototype.$destroy = function (remove, deferCleanup) {
  	    this._destroy(remove, deferCleanup);
  	  };
  
  	  /**
  	   * Partially compile a piece of DOM and return a
  	   * decompile function.
  	   *
  	   * @param {Element|DocumentFragment} el
  	   * @param {Vue} [host]
  	   * @param {Object} [scope]
  	   * @param {Fragment} [frag]
  	   * @return {Function}
  	   */
  
  	  Vue.prototype.$compile = function (el, host, scope, frag) {
  	    return compile(el, this.$options, true)(this, el, host, scope, frag);
  	  };
  	}
  
  	/**
  	 * The exposed Vue constructor.
  	 *
  	 * API conventions:
  	 * - public API methods/properties are prefixed with `$`
  	 * - internal methods/properties are prefixed with `_`
  	 * - non-prefixed properties are assumed to be proxied user
  	 *   data.
  	 *
  	 * @constructor
  	 * @param {Object} [options]
  	 * @public
  	 */
  
  	function Vue(options) {
  	  this._init(options);
  	}
  
  	// install internals
  	initMixin(Vue);
  	stateMixin(Vue);
  	eventsMixin(Vue);
  	lifecycleMixin(Vue);
  	miscMixin(Vue);
  
  	// install instance APIs
  	dataAPI(Vue);
  	domAPI(Vue);
  	eventsAPI(Vue);
  	lifecycleAPI(Vue);
  
  	var slot = {
  
  	  priority: SLOT,
  	  params: ['name'],
  
  	  bind: function bind() {
  	    // this was resolved during component transclusion
  	    var name = this.params.name || 'default';
  	    var content = this.vm._slotContents && this.vm._slotContents[name];
  	    if (!content || !content.hasChildNodes()) {
  	      this.fallback();
  	    } else {
  	      this.compile(content.cloneNode(true), this.vm._context, this.vm);
  	    }
  	  },
  
  	  compile: function compile(content, context, host) {
  	    if (content && context) {
  	      if (this.el.hasChildNodes() && content.childNodes.length === 1 && content.childNodes[0].nodeType === 1 && content.childNodes[0].hasAttribute('v-if')) {
  	        // if the inserted slot has v-if
  	        // inject fallback content as the v-else
  	        var elseBlock = document.createElement('template');
  	        elseBlock.setAttribute('v-else', '');
  	        elseBlock.innerHTML = this.el.innerHTML;
  	        // the else block should be compiled in child scope
  	        elseBlock._context = this.vm;
  	        content.appendChild(elseBlock);
  	      }
  	      var scope = host ? host._scope : this._scope;
  	      this.unlink = context.$compile(content, host, scope, this._frag);
  	    }
  	    if (content) {
  	      replace(this.el, content);
  	    } else {
  	      remove(this.el);
  	    }
  	  },
  
  	  fallback: function fallback() {
  	    this.compile(extractContent(this.el, true), this.vm);
  	  },
  
  	  unbind: function unbind() {
  	    if (this.unlink) {
  	      this.unlink();
  	    }
  	  }
  	};
  
  	var partial = {
  
  	  priority: PARTIAL,
  
  	  params: ['name'],
  
  	  // watch changes to name for dynamic partials
  	  paramWatchers: {
  	    name: function name(value) {
  	      vIf.remove.call(this);
  	      if (value) {
  	        this.insert(value);
  	      }
  	    }
  	  },
  
  	  bind: function bind() {
  	    this.anchor = createAnchor('v-partial');
  	    replace(this.el, this.anchor);
  	    this.insert(this.params.name);
  	  },
  
  	  insert: function insert(id) {
  	    var partial = resolveAsset(this.vm.$options, 'partials', id, true);
  	    if (partial) {
  	      this.factory = new FragmentFactory(this.vm, partial);
  	      vIf.insert.call(this);
  	    }
  	  },
  
  	  unbind: function unbind() {
  	    if (this.frag) {
  	      this.frag.destroy();
  	    }
  	  }
  	};
  
  	var elementDirectives = {
  	  slot: slot,
  	  partial: partial
  	};
  
  	var convertArray = vFor._postProcess;
  
  	/**
  	 * Limit filter for arrays
  	 *
  	 * @param {Number} n
  	 * @param {Number} offset (Decimal expected)
  	 */
  
  	function limitBy(arr, n, offset) {
  	  offset = offset ? parseInt(offset, 10) : 0;
  	  n = toNumber(n);
  	  return typeof n === 'number' ? arr.slice(offset, offset + n) : arr;
  	}
  
  	/**
  	 * Filter filter for arrays
  	 *
  	 * @param {String} search
  	 * @param {String} [delimiter]
  	 * @param {String} ...dataKeys
  	 */
  
  	function filterBy(arr, search, delimiter) {
  	  arr = convertArray(arr);
  	  if (search == null) {
  	    return arr;
  	  }
  	  if (typeof search === 'function') {
  	    return arr.filter(search);
  	  }
  	  // cast to lowercase string
  	  search = ('' + search).toLowerCase();
  	  // allow optional `in` delimiter
  	  // because why not
  	  var n = delimiter === 'in' ? 3 : 2;
  	  // extract and flatten keys
  	  var keys = Array.prototype.concat.apply([], toArray(arguments, n));
  	  var res = [];
  	  var item, key, val, j;
  	  for (var i = 0, l = arr.length; i < l; i++) {
  	    item = arr[i];
  	    val = item && item.$value || item;
  	    j = keys.length;
  	    if (j) {
  	      while (j--) {
  	        key = keys[j];
  	        if (key === '$key' && contains(item.$key, search) || contains(getPath(val, key), search)) {
  	          res.push(item);
  	          break;
  	        }
  	      }
  	    } else if (contains(item, search)) {
  	      res.push(item);
  	    }
  	  }
  	  return res;
  	}
  
  	/**
  	 * Filter filter for arrays
  	 *
  	 * @param {String|Array<String>|Function} ...sortKeys
  	 * @param {Number} [order]
  	 */
  
  	function orderBy(arr) {
  	  var comparator = null;
  	  var sortKeys = undefined;
  	  arr = convertArray(arr);
  
  	  // determine order (last argument)
  	  var args = toArray(arguments, 1);
  	  var order = args[args.length - 1];
  	  if (typeof order === 'number') {
  	    order = order < 0 ? -1 : 1;
  	    args = args.length > 1 ? args.slice(0, -1) : args;
  	  } else {
  	    order = 1;
  	  }
  
  	  // determine sortKeys & comparator
  	  var firstArg = args[0];
  	  if (!firstArg) {
  	    return arr;
  	  } else if (typeof firstArg === 'function') {
  	    // custom comparator
  	    comparator = function (a, b) {
  	      return firstArg(a, b) * order;
  	    };
  	  } else {
  	    // string keys. flatten first
  	    sortKeys = Array.prototype.concat.apply([], args);
  	    comparator = function (a, b, i) {
  	      i = i || 0;
  	      return i >= sortKeys.length - 1 ? baseCompare(a, b, i) : baseCompare(a, b, i) || comparator(a, b, i + 1);
  	    };
  	  }
  
  	  function baseCompare(a, b, sortKeyIndex) {
  	    var sortKey = sortKeys[sortKeyIndex];
  	    if (sortKey) {
  	      if (sortKey !== '$key') {
  	        if (isObject(a) && '$value' in a) a = a.$value;
  	        if (isObject(b) && '$value' in b) b = b.$value;
  	      }
  	      a = isObject(a) ? getPath(a, sortKey) : a;
  	      b = isObject(b) ? getPath(b, sortKey) : b;
  	    }
  	    return a === b ? 0 : a > b ? order : -order;
  	  }
  
  	  // sort on a copy to avoid mutating original array
  	  return arr.slice().sort(comparator);
  	}
  
  	/**
  	 * String contain helper
  	 *
  	 * @param {*} val
  	 * @param {String} search
  	 */
  
  	function contains(val, search) {
  	  var i;
  	  if (isPlainObject(val)) {
  	    var keys = Object.keys(val);
  	    i = keys.length;
  	    while (i--) {
  	      if (contains(val[keys[i]], search)) {
  	        return true;
  	      }
  	    }
  	  } else if (isArray(val)) {
  	    i = val.length;
  	    while (i--) {
  	      if (contains(val[i], search)) {
  	        return true;
  	      }
  	    }
  	  } else if (val != null) {
  	    return val.toString().toLowerCase().indexOf(search) > -1;
  	  }
  	}
  
  	var digitsRE = /(\d{3})(?=\d)/g;
  
  	// asset collections must be a plain object.
  	var filters = {
  
  	  orderBy: orderBy,
  	  filterBy: filterBy,
  	  limitBy: limitBy,
  
  	  /**
  	   * Stringify value.
  	   *
  	   * @param {Number} indent
  	   */
  
  	  json: {
  	    read: function read(value, indent) {
  	      return typeof value === 'string' ? value : JSON.stringify(value, null, Number(indent) || 2);
  	    },
  	    write: function write(value) {
  	      try {
  	        return JSON.parse(value);
  	      } catch (e) {
  	        return value;
  	      }
  	    }
  	  },
  
  	  /**
  	   * 'abc' => 'Abc'
  	   */
  
  	  capitalize: function capitalize(value) {
  	    if (!value && value !== 0) return '';
  	    value = value.toString();
  	    return value.charAt(0).toUpperCase() + value.slice(1);
  	  },
  
  	  /**
  	   * 'abc' => 'ABC'
  	   */
  
  	  uppercase: function uppercase(value) {
  	    return value || value === 0 ? value.toString().toUpperCase() : '';
  	  },
  
  	  /**
  	   * 'AbC' => 'abc'
  	   */
  
  	  lowercase: function lowercase(value) {
  	    return value || value === 0 ? value.toString().toLowerCase() : '';
  	  },
  
  	  /**
  	   * 12345 => $12,345.00
  	   *
  	   * @param {String} sign
  	   * @param {Number} decimals Decimal places
  	   */
  
  	  currency: function currency(value, _currency, decimals) {
  	    value = parseFloat(value);
  	    if (!isFinite(value) || !value && value !== 0) return '';
  	    _currency = _currency != null ? _currency : '$';
  	    decimals = decimals != null ? decimals : 2;
  	    var stringified = Math.abs(value).toFixed(decimals);
  	    var _int = decimals ? stringified.slice(0, -1 - decimals) : stringified;
  	    var i = _int.length % 3;
  	    var head = i > 0 ? _int.slice(0, i) + (_int.length > 3 ? ',' : '') : '';
  	    var _float = decimals ? stringified.slice(-1 - decimals) : '';
  	    var sign = value < 0 ? '-' : '';
  	    return sign + _currency + head + _int.slice(i).replace(digitsRE, '$1,') + _float;
  	  },
  
  	  /**
  	   * 'item' => 'items'
  	   *
  	   * @params
  	   *  an array of strings corresponding to
  	   *  the single, double, triple ... forms of the word to
  	   *  be pluralized. When the number to be pluralized
  	   *  exceeds the length of the args, it will use the last
  	   *  entry in the array.
  	   *
  	   *  e.g. ['single', 'double', 'triple', 'multiple']
  	   */
  
  	  pluralize: function pluralize(value) {
  	    var args = toArray(arguments, 1);
  	    return args.length > 1 ? args[value % 10 - 1] || args[args.length - 1] : args[0] + (value === 1 ? '' : 's');
  	  },
  
  	  /**
  	   * Debounce a handler function.
  	   *
  	   * @param {Function} handler
  	   * @param {Number} delay = 300
  	   * @return {Function}
  	   */
  
  	  debounce: function debounce(handler, delay) {
  	    if (!handler) return;
  	    if (!delay) {
  	      delay = 300;
  	    }
  	    return _debounce(handler, delay);
  	  }
  	};
  
  	function installGlobalAPI (Vue) {
  	  /**
  	   * Vue and every constructor that extends Vue has an
  	   * associated options object, which can be accessed during
  	   * compilation steps as `this.constructor.options`.
  	   *
  	   * These can be seen as the default options of every
  	   * Vue instance.
  	   */
  
  	  Vue.options = {
  	    directives: directives,
  	    elementDirectives: elementDirectives,
  	    filters: filters,
  	    transitions: {},
  	    components: {},
  	    partials: {},
  	    replace: true
  	  };
  
  	  /**
  	   * Expose useful internals
  	   */
  
  	  Vue.util = util;
  	  Vue.config = config;
  	  Vue.set = set;
  	  Vue['delete'] = del;
  	  Vue.nextTick = nextTick;
  
  	  /**
  	   * The following are exposed for advanced usage / plugins
  	   */
  
  	  Vue.compiler = compiler;
  	  Vue.FragmentFactory = FragmentFactory;
  	  Vue.internalDirectives = internalDirectives;
  	  Vue.parsers = {
  	    path: path,
  	    text: text,
  	    template: template,
  	    directive: directive,
  	    expression: expression
  	  };
  
  	  /**
  	   * 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
  	   *
  	   * @param {Object} extendOptions
  	   */
  
  	  Vue.extend = function (extendOptions) {
  	    extendOptions = extendOptions || {};
  	    var Super = this;
  	    var isFirstExtend = Super.cid === 0;
  	    if (isFirstExtend && extendOptions._Ctor) {
  	      return extendOptions._Ctor;
  	    }
  	    var name = extendOptions.name || Super.options.name;
  	    if (process.env.NODE_ENV !== 'production') {
  	      if (!/^[a-zA-Z][\w-]*$/.test(name)) {
  	        warn('Invalid component name: "' + name + '". Component names ' + 'can only contain alphanumeric characaters and the hyphen.');
  	        name = null;
  	      }
  	    }
  	    var Sub = createClass(name || 'VueComponent');
  	    Sub.prototype = Object.create(Super.prototype);
  	    Sub.prototype.constructor = Sub;
  	    Sub.cid = cid++;
  	    Sub.options = mergeOptions(Super.options, extendOptions);
  	    Sub['super'] = Super;
  	    // allow further extension
  	    Sub.extend = Super.extend;
  	    // create asset registers, so extended classes
  	    // can have their private assets too.
  	    config._assetTypes.forEach(function (type) {
  	      Sub[type] = Super[type];
  	    });
  	    // enable recursive self-lookup
  	    if (name) {
  	      Sub.options.components[name] = Sub;
  	    }
  	    // cache constructor
  	    if (isFirstExtend) {
  	      extendOptions._Ctor = Sub;
  	    }
  	    return Sub;
  	  };
  
  	  /**
  	   * A function that returns a sub-class constructor with the
  	   * given name. This gives us much nicer output when
  	   * logging instances in the console.
  	   *
  	   * @param {String} name
  	   * @return {Function}
  	   */
  
  	  function createClass(name) {
  	    /* eslint-disable no-new-func */
  	    return new Function('return function ' + classify(name) + ' (options) { this._init(options) }')();
  	    /* eslint-enable no-new-func */
  	  }
  
  	  /**
  	   * Plugin system
  	   *
  	   * @param {Object} plugin
  	   */
  
  	  Vue.use = function (plugin) {
  	    /* istanbul ignore if */
  	    if (plugin.installed) {
  	      return;
  	    }
  	    // additional parameters
  	    var args = toArray(arguments, 1);
  	    args.unshift(this);
  	    if (typeof plugin.install === 'function') {
  	      plugin.install.apply(plugin, args);
  	    } else {
  	      plugin.apply(null, args);
  	    }
  	    plugin.installed = true;
  	    return this;
  	  };
  
  	  /**
  	   * Apply a global mixin by merging it into the default
  	   * options.
  	   */
  
  	  Vue.mixin = function (mixin) {
  	    Vue.options = mergeOptions(Vue.options, mixin);
  	  };
  
  	  /**
  	   * Create asset registration methods with the following
  	   * signature:
  	   *
  	   * @param {String} id
  	   * @param {*} definition
  	   */
  
  	  config._assetTypes.forEach(function (type) {
  	    Vue[type] = function (id, definition) {
  	      if (!definition) {
  	        return this.options[type + 's'][id];
  	      } else {
  	        /* istanbul ignore if */
  	        if (process.env.NODE_ENV !== 'production') {
  	          if (type === 'component' && (commonTagRE.test(id) || reservedTagRE.test(id))) {
  	            warn('Do not use built-in or reserved HTML elements as component ' + 'id: ' + id);
  	          }
  	        }
  	        if (type === 'component' && isPlainObject(definition)) {
  	          definition.name = id;
  	          definition = Vue.extend(definition);
  	        }
  	        this.options[type + 's'][id] = definition;
  	        return definition;
  	      }
  	    };
  	  });
  
  	  // expose internal transition API
  	  extend(Vue.transition, transition);
  	}
  
  	installGlobalAPI(Vue);
  
  	Vue.version = '1.0.22';
  
  	// devtools global hook
  	/* istanbul ignore next */
  	setTimeout(function () {
  	  if (config.devtools) {
  	    if (devtools) {
  	      devtools.emit('init', Vue);
  	    } else if (process.env.NODE_ENV !== 'production' && inBrowser && /Chrome\/\d+/.test(window.navigator.userAgent)) {
  	      console.log('Download the Vue Devtools for a better development experience:\n' + 'https://github.com/vuejs/vue-devtools');
  	    }
  	  }
  	}, 0);
  
  	module.exports = Vue;
  	/* WEBPACK VAR INJECTION */}.call(exports, (function() { return this; }()), __webpack_require__(2)))
  
  /***/ },
  /* 2 */
  /***/ function(module, exports) {
  
  	// shim for using process in browser
  
  	var process = module.exports = {};
  	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 = setTimeout(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;
  	    clearTimeout(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) {
  	        setTimeout(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; };
  
  
  /***/ },
  /* 3 */
  /***/ function(module, exports, __webpack_require__) {
  
  	'use strict';
  
  	Object.defineProperty(exports, "__esModule", {
  		value: true
  	});
  
  	var _vue = __webpack_require__(1);
  
  	var _vue2 = _interopRequireDefault(_vue);
  
  	var _youtube = __webpack_require__(4);
  
  	var _youtube2 = _interopRequireDefault(_youtube);
  
  	var _searchInput = __webpack_require__(5);
  
  	var _searchInput2 = _interopRequireDefault(_searchInput);
  
  	var _listVideo = __webpack_require__(7);
  
  	var _listVideo2 = _interopRequireDefault(_listVideo);
  
  	function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  
  	exports.default = _vue2.default.extend({
  		template: _youtube2.default,
  		components: {
  			searchInput: _searchInput2.default,
  			listVideo: _listVideo2.default
  		}
  	});
  
  /***/ },
  /* 4 */
  /***/ function(module, exports) {
  
  	module.exports = "<di class=\"app-youtube\">\r\n\t<search-input> </search-input>\r\n\t<list-video> </list-video>\r\n</div>"
  
  /***/ },
  /* 5 */
  /***/ function(module, exports, __webpack_require__) {
  
  	'use strict';
  
  	Object.defineProperty(exports, "__esModule", {
  		value: true
  	});
  
  	var _vue = __webpack_require__(1);
  
  	var _vue2 = _interopRequireDefault(_vue);
  
  	var _searchInput = __webpack_require__(6);
  
  	var _searchInput2 = _interopRequireDefault(_searchInput);
  
  	function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  
  	exports.default = _vue2.default.extend({
  		template: _searchInput2.default
  	});
  
  /***/ },
  /* 6 */
  /***/ function(module, exports) {
  
  	module.exports = "<form>\r\n\t<label>\r\n\t  Search: \r\n\t  <input name=\"search\" id=\"search\" value=\"\" placeholder=\"put your search keyword\" />\r\n\t</label>\t\r\n</form>"
  
  /***/ },
  /* 7 */
  /***/ function(module, exports, __webpack_require__) {
  
  	'use strict';
  
  	Object.defineProperty(exports, "__esModule", {
  		value: true
  	});
  
  	var _vue = __webpack_require__(1);
  
  	var _vue2 = _interopRequireDefault(_vue);
  
  	var _video = __webpack_require__(8);
  
  	var _video2 = _interopRequireDefault(_video);
  
  	var _listVideo = __webpack_require__(10);
  
  	var _listVideo2 = _interopRequireDefault(_listVideo);
  
  	function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  
  	exports.default = _vue2.default.extend({
  		template: _listVideo2.default,
  		components: {}
  	});
  
  /***/ },
  /* 8 */
  /***/ function(module, exports, __webpack_require__) {
  
  	'use strict';
  
  	Object.defineProperty(exports, "__esModule", {
  		value: true
  	});
  
  	var _vue = __webpack_require__(1);
  
  	var _vue2 = _interopRequireDefault(_vue);
  
  	var _video = __webpack_require__(9);
  
  	var _video2 = _interopRequireDefault(_video);
  
  	function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  
  	exports.default = _vue2.default.extend({
  		template: _video2.default
  	});
  
  /***/ },
  /* 9 */
  /***/ function(module, exports) {
  
  	module.exports = ""
  
  /***/ },
  /* 10 */
  /***/ function(module, exports) {
  
  	module.exports = "<div>\r\n\r\n\t<div> 1 </div><div> 1 </div><div> 1 </div><div> 1 </div><div> 1 </div><div> 1 </div><div> 1 </div><div> 1 </div><div> 1 </div><div> 1 </div><div> 1 </div><div> 1 </div><div> 1 </div><div> 1 </div><div> 1 </div>\r\n</div>"
  
  /***/ }
  /******/ ]);