Created default sortable options to be shared between the lists & the cards

Added full vue.js source

1 files changed, 10068 insertions, 3 deletions

diff --git a/vendor/assets/javascripts/vue.js b/vendor/assets/javascripts/vue.js
index 54e00154633..3c5e06254d4 100644
--- a/vendor/assets/javascripts/vue.js
+++ b/vendor/assets/javascripts/vue.js
@@ -3,6 +3,10071 @@
  * (c) 2016 Evan You
  * Released under the MIT License.
  */
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-if(!this.invalid){var e=this.arg;this.arg?this.handleSingle(e,t):this.handleObject(t||{})}},handleObject:ls.handleObject,handleSingle:function(t,e){var i=this.el,n=this.descriptor.interp;if(this.modifiers.camel&&(t=l(t)),!n&&ps.test(t)&&t in i){var r="value"===t&&null==e?"":e;i[t]!==r&&(i[t]=r)}var s=vs[t];if(!n&&s){i[s]=e;var o=i.__v_model;o&&o.listener()}return"value"===t&&"TEXTAREA"===i.tagName?void i.removeAttribute(t):void(ds.test(t)?i.setAttribute(t,e?"true":"false"):null!=e&&e!==!1?"class"===t?(i.__v_trans&&(e+=" "+i.__v_trans.id+"-transition"),Z(i,e)):us.test(t)?i.setAttributeNS(cs,t,e===!0?"":e):i.setAttribute(t,e===!0?"":e):i.removeAttribute(t))}},gs={priority:Mr,bind:function(){if(this.arg){var t=this.id=l(this.arg),e=(this._scope||this.vm).$els;i(e,t)?e[t]=this.el:kt(e,t,this.el)}},unbind:function(){var t=(this._scope||this.vm).$els;t[this.id]===this.el&&(t[this.id]=null)}},_s={bind:function(){}},ys={bind:function(){var t=this.el;this.vm.$once("pre-hook:compiled",function(){t.removeAttribute("v-cloak")})}},bs={text:kr,html:Dr,"for":qr,"if":Qr,show:Gr,model:es,on:ns,bind:ms,el:gs,ref:_s,cloak:ys},ws={deep:!0,update:function(t){t?"string"==typeof t?this.setClass(t.trim().split(/\s+/)):this.setClass(_e(t)):this.cleanup()},setClass:function(t){this.cleanup(t);for(var e=0,i=t.length;i>e;e++){var n=t[e];n&&ye(this.el,n,X)}this.prevKeys=t},cleanup:function(t){var e=this.prevKeys;if(e)for(var i=e.length;i--;){var n=e[i];(!t||t.indexOf(n)<0)&&ye(this.el,n,Y)}}},Cs={priority:Vr,params:["keep-alive","transition-mode","inline-template"],bind:function(){this.el.__vue__||(this.keepAlive=this.params.keepAlive,this.keepAlive&&(this.cache={}),this.params.inlineTemplate&&(this.inlineTemplate=K(this.el,!0)),this.pendingComponentCb=this.Component=null,this.pendingRemovals=0,this.pendingRemovalCb=null,this.anchor=nt("v-component"),J(this.el,this.anchor),this.el.removeAttribute("is"),this.el.removeAttribute(":is"),this.descriptor.ref&&this.el.removeAttribute("v-ref:"+u(this.descriptor.ref)),this.literal&&this.setComponent(this.expression))},update:function(t){this.literal||this.setComponent(t)},setComponent:function(t,e){if(this.invalidatePending(),t){var i=this;this.resolveComponent(t,function(){i.mountComponent(e)})}else this.unbuild(!0),this.remove(this.childVM,e),this.childVM=null},resolveComponent:function(t,e){var i=this;this.pendingComponentCb=w(function(n){i.ComponentName=n.options.name||("string"==typeof t?t:null),i.Component=n,e()}),this.vm._resolveComponent(t,this.pendingComponentCb)},mountComponent:function(t){this.unbuild(!0);var e=this,i=this.Component.options.activate,n=this.getCached(),r=this.build();i&&!n?(this.waitingFor=r,be(i,r,function(){e.waitingFor===r&&(e.waitingFor=null,e.transition(r,t))})):(n&&r._updateRef(),this.transition(r,t))},invalidatePending:function(){this.pendingComponentCb&&(this.pendingComponentCb.cancel(),this.pendingComponentCb=null)},build:function(t){var e=this.getCached();if(e)return e;if(this.Component){var i={name:this.ComponentName,el:Zt(this.el),template:this.inlineTemplate,parent:this._host||this.vm,_linkerCachable:!this.inlineTemplate,_ref:this.descriptor.ref,_asComponent:!0,_isRouterView:this._isRouterView,_context:this.vm,_scope:this._scope,_frag:this._frag};t&&v(i,t);var n=new this.Component(i);return this.keepAlive&&(this.cache[this.Component.cid]=n),n}},getCached:function(){return this.keepAlive&&this.cache[this.Component.cid]},unbuild:function(t){this.waitingFor&&(this.keepAlive||this.waitingFor.$destroy(),this.waitingFor=null);var e=this.childVM;return!e||this.keepAlive?void(e&&(e._inactive=!0,e._updateRef(!0))):void e.$destroy(!1,t)},remove:function(t,e){var i=this.keepAlive;if(t){this.pendingRemovals++,this.pendingRemovalCb=e;var n=this;t.$remove(function(){n.pendingRemovals--,i||t._cleanup(),!n.pendingRemovals&&n.pendingRemovalCb&&(n.pendingRemovalCb(),n.pendingRemovalCb=null)})}else e&&e()},transition:function(t,e){var i=this,n=this.childVM;switch(n&&(n._inactive=!0),t._inactive=!1,this.childVM=t,i.params.transitionMode){case"in-out":t.$before(i.anchor,function(){i.remove(n,e)});break;case"out-in":i.remove(n,function(){t.$before(i.anchor,e)});break;default:i.remove(n),t.$before(i.anchor,e)}},unbind:function(){if(this.invalidatePending(),this.unbuild(),this.cache){for(var t in this.cache)this.cache[t].$destroy();this.cache=null}}},$s=An._propBindingModes,ks={},xs=/^[$_a-zA-Z]+[\w$]*$/,As=An._propBindingModes,Os={bind:function(){var t=this.vm,e=t._context,i=this.descriptor.prop,n=i.path,r=i.parentPath,s=i.mode===As.TWO_WAY,o=this.parentWatcher=new Ut(e,r,function(e){xe(t,i,e)},{twoWay:s,filters:i.filters,scope:this._scope});if(ke(t,i,o.value),s){var a=this;t.$once("pre-hook:created",function(){a.childWatcher=new Ut(t,n,function(t){o.set(t)},{sync:!0})})}},unbind:function(){this.parentWatcher.teardown(),this.childWatcher&&this.childWatcher.teardown()}},Ts=[],Ns=!1,js="transition",Es="animation",Ss=Ji+"Duration",Fs=Qi+"Duration",Ds=Ri&&window.requestAnimationFrame,Ps=Ds?function(t){Ds(function(){Ds(t)})}:function(t){setTimeout(t,50)},Rs=Se.prototype;Rs.enter=function(t,e){this.cancelPending(),this.callHook("beforeEnter"),this.cb=e,X(this.el,this.enterClass),t(),this.entered=!1,this.callHookWithCb("enter"),this.entered||(this.cancel=this.hooks&&this.hooks.enterCancelled,je(this.enterNextTick))},Rs.enterNextTick=function(){var t=this;this.justEntered=!0,Ps(function(){t.justEntered=!1});var e=this.enterDone,i=this.getCssTransitionType(this.enterClass);this.pendingJsCb?i===js&&Y(this.el,this.enterClass):i===js?(Y(this.el,this.enterClass),this.setupCssCb(qi,e)):i===Es?this.setupCssCb(Gi,e):e()},Rs.enterDone=function(){this.entered=!0,this.cancel=this.pendingJsCb=null,Y(this.el,this.enterClass),this.callHook("afterEnter"),this.cb&&this.cb()},Rs.leave=function(t,e){this.cancelPending(),this.callHook("beforeLeave"),this.op=t,this.cb=e,X(this.el,this.leaveClass),this.left=!1,this.callHookWithCb("leave"),this.left||(this.cancel=this.hooks&&this.hooks.leaveCancelled,this.op&&!this.pendingJsCb&&(this.justEntered?this.leaveDone():je(this.leaveNextTick)))},Rs.leaveNextTick=function(){var t=this.getCssTransitionType(this.leaveClass);if(t){var e=t===js?qi:Gi;this.setupCssCb(e,this.leaveDone)}else this.leaveDone()},Rs.leaveDone=function(){this.left=!0,this.cancel=this.pendingJsCb=null,this.op(),Y(this.el,this.leaveClass),this.callHook("afterLeave"),this.cb&&this.cb(),this.op=null},Rs.cancelPending=function(){this.op=this.cb=null;var t=!1;this.pendingCssCb&&(t=!0,Q(this.el,this.pendingCssEvent,this.pendingCssCb),this.pendingCssEvent=this.pendingCssCb=null),this.pendingJsCb&&(t=!0,this.pendingJsCb.cancel(),this.pendingJsCb=null),t&&(Y(this.el,this.enterClass),Y(this.el,this.leaveClass)),this.cancel&&(this.cancel.call(this.vm,this.el),this.cancel=null)},Rs.callHook=function(t){this.hooks&&this.hooks[t]&&this.hooks[t].call(this.vm,this.el)},Rs.callHookWithCb=function(t){var e=this.hooks&&this.hooks[t];e&&(e.length>1&&(this.pendingJsCb=w(this[t+"Done"])),e.call(this.vm,this.el,this.pendingJsCb))},Rs.getCssTransitionType=function(t){if(!(!qi||document.hidden||this.hooks&&this.hooks.css===!1||Fe(this.el))){var e=this.type||this.typeCache[t];if(e)return e;var i=this.el.style,n=window.getComputedStyle(this.el),r=i[Ss]||n[Ss];if(r&&"0s"!==r)e=js;else{var s=i[Fs]||n[Fs];s&&"0s"!==s&&(e=Es)}return e&&(this.typeCache[t]=e),e}},Rs.setupCssCb=function(t,e){this.pendingCssEvent=t;var i=this,n=this.el,r=this.pendingCssCb=function(s){s.target===n&&(Q(n,t,r),i.pendingCssEvent=i.pendingCssCb=null,!i.pendingJsCb&&e&&e())};q(n,t,r)};var Ls={priority:Ir,update:function(t,e){var i=this.el,n=gt(this.vm.$options,"transitions",t);t=t||"v",e=e||"v",i.__v_trans=new Se(i,t,n,this.vm),Y(i,e+"-transition"),X(i,t+"-transition")}},Hs={style:ls,"class":ws,component:Cs,prop:Os,transition:Ls},Is=/^v-bind:|^:/,Ms=/^v-on:|^@/,Vs=/^v-([^:]+)(?:$|:(.*)$)/,Bs=/\.[^\.]+/g,Ws=/^(v-bind:|:)?transition$/,zs=1e3,Us=2e3;Ye.terminal=!0;var Js=/[^\w\-:\.]/,qs=Object.freeze({compile:De,compileAndLinkProps:Ie,compileRoot:Me,transclude:si,resolveSlots:li}),Qs=/^v-on:|^@/;di.prototype._bind=function(){var t=this.name,e=this.descriptor;if(("cloak"!==t||this.vm._isCompiled)&&this.el&&this.el.removeAttribute){var i=e.attr||"v-"+t;this.el.removeAttribute(i)}var n=e.def;if("function"==typeof n?this.update=n:v(this,n),this._setupParams(),this.bind&&this.bind(),this._bound=!0,this.literal)this.update&&this.update(e.raw);else if((this.expression||this.modifiers)&&(this.update||this.twoWay)&&!this._checkStatement()){var r=this;this.update?this._update=function(t,e){r._locked||r.update(t,e)}:this._update=pi;var s=this._preProcess?p(this._preProcess,this):null,o=this._postProcess?p(this._postProcess,this):null,a=this._watcher=new Ut(this.vm,this.expression,this._update,{filters:this.filters,twoWay:this.twoWay,deep:this.deep,preProcess:s,postProcess:o,scope:this._scope});this.afterBind?this.afterBind():this.update&&this.update(a.value)}},di.prototype._setupParams=function(){if(this.params){var t=this.params;this.params=Object.create(null);for(var e,i,n,r=t.length;r--;)e=u(t[r]),n=l(e),i=M(this.el,e),null!=i?this._setupParamWatcher(n,i):(i=I(this.el,e),null!=i&&(this.params[n]=""===i?!0:i))}},di.prototype._setupParamWatcher=function(t,e){var i=this,n=!1,r=(this._scope||this.vm).$watch(e,function(e,r){if(i.params[t]=e,n){var s=i.paramWatchers&&i.paramWatchers[t];s&&s.call(i,e,r)}else n=!0},{immediate:!0,user:!1});(this._paramUnwatchFns||(this._paramUnwatchFns=[])).push(r)},di.prototype._checkStatement=function(){var t=this.expression;if(t&&this.acceptStatement&&!Mt(t)){var e=It(t).get,i=this._scope||this.vm,n=function(t){i.$event=t,e.call(i,i),i.$event=null};return this.filters&&(n=i._applyFilters(n,null,this.filters)),this.update(n),!0}},di.prototype.set=function(t){this.twoWay&&this._withLock(function(){this._watcher.set(t)})},di.prototype._withLock=function(t){var e=this;e._locked=!0,t.call(e),Yi(function(){e._locked=!1})},di.prototype.on=function(t,e,i){q(this.el,t,e,i),(this._listeners||(this._listeners=[])).push([t,e])},di.prototype._teardown=function(){if(this._bound){this._bound=!1,this.unbind&&this.unbind(),this._watcher&&this._watcher.teardown();var t,e=this._listeners;if(e)for(t=e.length;t--;)Q(this.el,e[t][0],e[t][1]);var i=this._paramUnwatchFns;if(i)for(t=i.length;t--;)i[t]();this.vm=this.el=this._watcher=this._listeners=null}};var Gs=/[^|]\|[^|]/;xt(wi),ui(wi),fi(wi),vi(wi),mi(wi),gi(wi),_i(wi),yi(wi),bi(wi);var Zs={priority:Ur,params:["name"],bind:function(){var t=this.params.name||"default",e=this.vm._slotContents&&this.vm._slotContents[t];e&&e.hasChildNodes()?this.compile(e.cloneNode(!0),this.vm._context,this.vm):this.fallback()},compile:function(t,e,i){if(t&&e){if(this.el.hasChildNodes()&&1===t.childNodes.length&&1===t.childNodes[0].nodeType&&t.childNodes[0].hasAttribute("v-if")){var n=document.createElement("template");n.setAttribute("v-else",""),n.innerHTML=this.el.innerHTML,n._context=this.vm,t.appendChild(n)}var r=i?i._scope:this._scope;this.unlink=e.$compile(t,i,r,this._frag)}t?J(this.el,t):z(this.el)},fallback:function(){this.compile(K(this.el,!0),this.vm)},unbind:function(){this.unlink&&this.unlink()}},Xs={priority:Br,params:["name"],paramWatchers:{name:function(t){Qr.remove.call(this),t&&this.insert(t)}},bind:function(){this.anchor=nt("v-partial"),J(this.el,this.anchor),this.insert(this.params.name)},insert:function(t){var e=gt(this.vm.$options,"partials",t,!0);e&&(this.factory=new se(this.vm,e),Qr.insert.call(this))},unbind:function(){this.frag&&this.frag.destroy()}},Ys={slot:Zs,partial:Xs},Ks=qr._postProcess,to=/(\d{3})(?=\d)/g,eo={orderBy:ki,filterBy:$i,limitBy:Ci,json:{read:function(t,e){return"string"==typeof t?t:JSON.stringify(t,null,arguments.length>1?e:2)},write:function(t){try{return JSON.parse(t)}catch(e){return t}}},capitalize:function(t){return t||0===t?(t=t.toString(),t.charAt(0).toUpperCase()+t.slice(1)):""},uppercase:function(t){return t||0===t?t.toString().toUpperCase():""},lowercase:function(t){return t||0===t?t.toString().toLowerCase():""},currency:function(t,e,i){if(t=parseFloat(t),!isFinite(t)||!t&&0!==t)return"";e=null!=e?e:"$",i=null!=i?i:2;var n=Math.abs(t).toFixed(i),r=i?n.slice(0,-1-i):n,s=r.length%3,o=s>0?r.slice(0,s)+(r.length>3?",":""):"",a=i?n.slice(-1-i):"",h=0>t?"-":"";return h+e+o+r.slice(s).replace(to,"$1,")+a},pluralize:function(t){var e=d(arguments,1),i=e.length;if(i>1){var n=t%10-1;return n in e?e[n]:e[i-1]}return e[0]+(1===t?"":"s")},debounce:function(t,e){return t?(e||(e=300),y(t,e)):void 0}};return Ai(wi),wi.version="1.0.26",setTimeout(function(){An.devtools&&Li&&Li.emit("init",wi)},0),wi});
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+  typeof define === 'function' && define.amd ? define(factory) :
+  (global.Vue = factory());
+}(this, function () { 'use strict';
+
+  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 isIE = UA && UA.indexOf('trident') > 0;
+  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 iosVersionMatch = isIos && UA.match(/os ([\d_]+)/);
+  var iosVersion = iosVersionMatch && iosVersionMatch[1].split('_');
+
+  // detecting iOS UIWebView by indexedDB
+  var hasMutationObserverBug = iosVersion && Number(iosVersion[0]) >= 9 && Number(iosVersion[1]) >= 3 && !window.indexedDB;
+
+  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' && !hasMutationObserverBug) {
+      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;
+
+    var entry = this.get(key, true);
+    if (!entry) {
+      if (this.size === this.limit) {
+        removed = this.shift();
+      }
+      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 + '((?:.|\\n)+?)' + 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: 'development' !== '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 ('development' !== '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) {
+        'development' !== '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) {
+    if (!node) return false;
+    var doc = node.ownerDocument.documentElement;
+    var parent = 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)$/i;
+
+  var isUnknownElement = undefined;
+  if ('development' !== 'production') {
+    isUnknownElement = function (el, tag) {
+      if (tag.indexOf('-') > -1) {
+        // http://stackoverflow.com/a/28210364/1070244
+        return el.constructor === window.HTMLUnknownElement || el.constructor === window.HTMLElement;
+      } else {
+        return (/HTMLUnknownElement/.test(el.toString()) &&
+          // Chrome returns unknown for several HTML5 elements.
+          // https://code.google.com/p/chromium/issues/detail?id=540526
+          // Firefox returns unknown for some "Interactive elements."
+          !/^(data|time|rtc|rb|details|dialog|summary)$/.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 ('development' !== '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') {
+        'development' !== 'production' && warn('The "data" option should be a function ' + 'that returns a per-instance value in component ' + 'definitions.', vm);
+        return parentVal;
+      }
+      if (!parentVal) {
+        return childVal;
+      }
+      // when parentVal & childVal are both present,
+      // we need to return a function that returns the
+      // merged result of both functions... no need to
+      // check if parentVal is a function here because
+      // it has to be a function to pass previous merges.
+      return function mergedDataFn() {
+        return mergeData(childVal.call(this), parentVal.call(this));
+      };
+    } else if (parentVal || childVal) {
+      return function mergedInstanceDataFn() {
+        // instance merge
+        var instanceData = typeof childVal === 'function' ? childVal.call(vm) : childVal;
+        var defaultData = typeof parentVal === 'function' ? parentVal.call(vm) : undefined;
+        if (instanceData) {
+          return mergeData(instanceData, defaultData);
+        } else {
+          return defaultData;
+        }
+      };
+    }
+  };
+
+  /**
+   * El
+   */
+
+  strats.el = function (parentVal, childVal, vm) {
+    if (!vm && childVal && typeof childVal !== 'function') {
+      'development' !== '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 ('development' !== '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)) {
+          'development' !== '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 ('development' !== '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) {
+          'development' !== '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 ('development' !== '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++) {
+        var mixin = child.mixins[i];
+        var mixinOptions = mixin.prototype instanceof Vue ? mixin.options : mixin;
+        parent = mergeOptions(parent, mixinOptions, 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 ('development' !== '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,
+  	isIE: isIE,
+  	isIE9: isIE9,
+  	isAndroid: isAndroid,
+  	isIos: isIos,
+  	iosVersionMatch: iosVersionMatch,
+  	iosVersion: iosVersion,
+  	hasMutationObserverBug: hasMutationObserverBug,
+  	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 ('development' !== '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 ('development' !== 'production' && last._isVue) {
+            warnNonExistent(path, last);
+          }
+          set(last, key, obj);
+        }
+      } else {
+        if (isArray(obj)) {
+          obj.$set(key, val);
+        } else if (key in obj) {
+          obj[key] = val;
+        } else {
+          if ('development' !== 'production' && obj._isVue) {
+            warnNonExistent(path, obj);
+          }
+          set(obj, key, val);
+        }
+      }
+    }
+    return true;
+  }
+
+var path = Object.freeze({
+    parsePath: parsePath,
+    getPath: getPath,
+    setPath: setPath
+  });
+
+  var expressionCache = new Cache(1000);
+
+  var allowedKeywords = 'Math,Date,this,true,false,null,undefined,Infinity,NaN,' + 'isNaN,isFinite,decodeURI,decodeURIComponent,encodeURI,' + 'encodeURIComponent,parseInt,parseFloat';
+  var allowedKeywordsRE = new RegExp('^(' + allowedKeywords.replace(/,/g, '\\b|') + '\\b)');
+
+  // keywords that don't make sense inside expressions
+  var improperKeywords = 'break,case,class,catch,const,continue,debugger,default,' + 'delete,do,else,export,extends,finally,for,function,if,' + 'import,in,instanceof,let,return,super,switch,throw,try,' + 'var,while,with,yield,enum,await,implements,package,' + 'protected,static,interface,private,public';
+  var improperKeywordsRE = new RegExp('^(' + improperKeywords.replace(/,/g, '\\b|') + '\\b)');
+
+  var wsRE = /\s/g;
+  var newlineRE = /\n/g;
+  var saveRE = /[\{,]\s*[\w\$_]+\s*:|('(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`)|new |typeof |void /g;
+  var restoreRE = /"(\d+)"/g;
+  var pathTestRE = /^[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['.*?'\]|\[".*?"\]|\[\d+\]|\[[A-Za-z_$][\w$]*\])*$/;
+  var identRE = /[^\w$\.](?:[A-Za-z_$][\w$]*)/g;
+  var literalValueRE$1 = /^(?:true|false|null|undefined|Infinity|NaN)$/;
+
+  function noop() {}
+
+  /**
+   * 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)) {
+      'development' !== '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 because 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) {
+      if ('development' !== 'production') {
+        /* istanbul ignore if */
+        if (e.toString().match(/unsafe-eval|CSP/)) {
+          warn('It seems you are using the default build of Vue.js in an environment ' + 'with Content Security Policy that prohibits unsafe-eval. ' + 'Use the CSP-compliant build instead: ' + 'http://vuejs.org/guide/installation.html#CSP-compliant-build');
+        } else {
+          warn('Invalid expression. ' + 'Generated function body: ' + body);
+        }
+      }
+      return noop;
+    }
+  }
+
+  /**
+   * 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 {
+      'development' !== '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 literal values as paths
+    !literalValueRE$1.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() {
+    var _again = true;
+
+    _function: while (_again) {
+      _again = false;
+
+      runBatcherQueue(queue);
+      runBatcherQueue(userQueue);
+      // user watchers triggered more watchers,
+      // keep flushing until it depletes
+      if (queue.length) {
+        _again = true;
+        continue _function;
+      }
+      // 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 ('development' !== '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;
+        }
+      }
+    }
+    queue.length = 0;
+  }
+
+  /**
+   * 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 ('development' !== '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 ('development' !== '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) {
+        'development' !== '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 ('development' !== '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 ('development' !== '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) && Object.isExtensible(val)) {
+      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+?;/;
+  var commentRE = /<!--/;
+
+  /**
+   * 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);
+    var commentMatch = commentRE.test(templateString);
+
+    if (!tagMatch && !entityMatch && !commentMatch) {
+      // 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) {
+        'development' !== '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') {
+          'development' !== 'production' && this.warnDuplicate(value);
+        }
+      } else {
+        id = this.id;
+        if (hasOwn(value, id)) {
+          if (value[id] === null) {
+            value[id] = frag;
+          } else {
+            'development' !== 'production' && this.warnDuplicate(value);
+          }
+        } else if (Object.isExtensible(value)) {
+          def(value, id, frag);
+        } else if ('development' !== '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)) {
+        'development' !== '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
+     * watcher'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 === '$index' ? index : trackByKey.charAt(0).match(/\w/) ? getPath(value, trackByKey) : value[trackByKey] : key || value;
+  }
+
+  if ('development' !== 'production') {
+    vFor.warnDuplicate = function (value) {
+      warn('Duplicate value found in v-for="' + this.descriptor.raw + '": ' + JSON.stringify(value) + '. Use track-by="$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 {
+        'development' !== '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) {
+      // #3029 only update when the value changes. This prevent
+      // browsers from overwriting values like selectionStart
+      value = _toString(value);
+      if (value !== this.el.value) this.el.value = 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 _this = this;
+
+      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', function () {
+        nextTick(_this.forceUpdate);
+      });
+      if (!inDoc(el)) {
+        nextTick(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$2,
+    radio: radio,
+    select: select,
+    checkbox: checkbox
+  };
+
+  var model = {
+
+    priority: MODEL,
+    twoWay: true,
+    handlers: handlers,
+    params: ['lazy', 'number', 'debounce'],
+
+    /**
+     * Possible elements:
+     *   <select>
+     *   <textarea>
+     *   <input type="*">
+     *     - text
+     *     - checkbox
+     *     - radio
+     *     - number
+     */
+
+    bind: function bind() {
+      // friendly warning...
+      this.checkFilters();
+      if (this.hasRead && !this.hasWrite) {
+        'development' !== 'production' && warn('It seems you are using a read-only filter with ' + 'v-model="' + this.descriptor.raw + '". ' + 'You might want to use a two-way filter to ensure correct behavior.', this.vm);
+      }
+      var el = this.el;
+      var tag = el.tagName;
+      var handler;
+      if (tag === 'INPUT') {
+        handler = handlers[el.type] || handlers.text;
+      } else if (tag === 'SELECT') {
+        handler = handlers.select;
+      } else if (tag === 'TEXTAREA') {
+        handler = handlers.text;
+      } else {
+        'development' !== 'production' && warn('v-model does not support element type: ' + tag, this.vm);
+        return;
+      }
+      el.__v_model = this;
+      handler.bind.call(this);
+      this.update = handler.update;
+      this._unbind = handler.unbind;
+    },
+
+    /**
+     * Check read/write filter stats.
+     */
+
+    checkFilters: function checkFilters() {
+      var filters = this.filters;
+      if (!filters) return;
+      var i = filters.length;
+      while (i--) {
+        var filter = resolveAsset(this.vm.$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') {
+        'development' !== '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 ('development' !== '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')) {
+          'development' !== '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 ('development' !== '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).$els;
+      if (refs[this.id] === this.el) {
+        refs[this.id] = null;
+      }
+    }
+  };
+
+  var ref = {
+    bind: function bind() {
+      'development' !== 'production' && warn('v-ref:' + this.arg + ' must be used on a child ' + 'component. Found on <' + this.el.tagName.toLowerCase() + '>.', this.vm);
+    }
+  };
+
+  var cloak = {
+    bind: function bind() {
+      var el = this.el;
+      this.vm.$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 {
+        'development' !== '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 ('development' !== '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_$][\w$]*|\[[^\[\]]+\])*$/;
+
+  /**
+   * Compile props on a root element and return
+   * a props link function.
+   *
+   * @param {Element|DocumentFragment} el
+   * @param {Array} propOptions
+   * @param {Vue} vm
+   * @return {Function} propsLinkFn
+   */
+
+  function compileProps(el, propOptions, vm) {
+    var props = [];
+    var names = Object.keys(propOptions);
+    var i = names.length;
+    var options, name, attr, value, path, parsed, prop;
+    while (i--) {
+      name = names[i];
+      options = propOptions[name] || empty;
+
+      if ('development' !== 'production' && name === '$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)) {
+        'development' !== '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 ('development' !== '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 ('development' !== '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 ('development' !== '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, vm);
+    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)) {
+      'development' !== '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 ('development' !== '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)) {
+        'development' !== '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, vm) {
+    var coerce = prop.options.coerce;
+    if (!coerce) {
+      return value;
+    }
+    if (typeof coerce === 'function') {
+      return coerce(value);
+    } else {
+      'development' !== 'production' && warn('Invalid coerce for prop "' + prop.name + '": expected function, got ' + typeof coerce + '.', vm);
+      return 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 ('development' !== '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';
+      oldId = oldId || 'v';
+      el.__v_trans = new Transition(el, id, hooks, this.vm);
+      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 ('development' === 'production') {}
+    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 ('development' !== '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 ('development' !== '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 = _toString(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 ('development' !== '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) {
+          'development' !== '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 {
+      'development' !== '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 ('development' !== '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, true);
+      }
+      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.$options;
+      var el = options.el;
+      var props = options.props;
+      if (props && !el) {
+        'development' !== 'production' && warn('Props will not be compiled if no `el` option is ' + 'provided at instantiation.', this);
+      }
+      // make sure to convert string selectors into element now
+      el = options.el = query(el);
+      this._propsUnlinkFn = el && el.nodeType === 1 && props
+      // props must be linked in proper scope if inside v-for
+      ? compileAndLinkProps(this, el, props, this._scope) : null;
+    };
+
+    /**
+     * Initialize the data.
+     */
+
+    Vue.prototype._initData = function () {
+      var dataFn = this.$options.data;
+      var data = this._data = dataFn ? dataFn() : {};
+      if (!isPlainObject(data)) {
+        data = {};
+        'development' !== '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 ('development' !== '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 {
+          'development' !== '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$1() {}
+
+  /**
+   * 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 ('development' !== '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$1;
+      }
+      var preProcess = this._preProcess ? bind(this._preProcess, this) : null;
+      var postProcess = this._postProcess ? bind(this._postProcess, this) : null;
+      var watcher = this._watcher = new Watcher(this.vm, this.expression, this._update, // callback
+      {
+        filters: this.filters,
+        twoWay: this.twoWay,
+        deep: this.deep,
+        preProcess: preProcess,
+        postProcess: postProcess,
+        scope: this._scope
+      });
+      // v-model with inital inline value need to sync back to
+      // model instead of update to DOM on init. They would
+      // set the afterBind hook to indicate that.
+      if (this.afterBind) {
+        this.afterBind();
+      } else if (this.update) {
+        this.update(watcher.value);
+      }
+    }
+  };
+
+  /**
+   * Setup all param attributes, e.g. track-by,
+   * transition-mode, etc...
+   */
+
+  Directive.prototype._setupParams = function () {
+    if (!this.params) {
+      return;
+    }
+    var params = this.params;
+    // swap the params array with a fresh object.
+    this.params = Object.create(null);
+    var i = params.length;
+    var key, val, mappedKey;
+    while (i--) {
+      key = hyphenate(params[i]);
+      mappedKey = camelize(key);
+      val = getBindAttr(this.el, key);
+      if (val != null) {
+        // dynamic
+        this._setupParamWatcher(mappedKey, val);
+      } else {
+        // static
+        val = getAttr(this.el, key);
+        if (val != null) {
+          this.params[mappedKey] = val === '' ? true : val;
+        }
+      }
+    }
+  };
+
+  /**
+   * Setup a watcher for a dynamic param.
+   *
+   * @param {String} key
+   * @param {String} expression
+   */
+
+  Directive.prototype._setupParamWatcher = function (key, expression) {
+    var self = this;
+    var called = false;
+    var unwatch = (this._scope || this.vm).$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 ('development' !== '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 ('development' !== '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) {
+            'development' !== '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) {
+        'development' !== '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, arguments.length > 1 ? 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);
+      var length = args.length;
+      if (length > 1) {
+        var index = value % 10 - 1;
+        return index in args ? args[index] : args[length - 1];
+      } else {
+        return 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 ('development' !== '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 ('development' !== '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)) {
+            if (!definition.name) {
+              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 = '1.0.26';
+
+  // devtools global hook
+  /* istanbul ignore next */
+  setTimeout(function () {
+    if (config.devtools) {
+      if (devtools) {
+        devtools.emit('init', Vue);
+      } else if ('development' !== '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);
+
+  return Vue;
+
+}));