diff --git a/ln.build.server/Program.cs b/ln.build.server/Program.cs
index 185e59f..6f18048 100644
--- a/ln.build.server/Program.cs
+++ b/ln.build.server/Program.cs
@@ -8,20 +8,27 @@ using ln.type;
 using ln.threading;
 using ln.build;
 using ln.build.repositories;
+using Microsoft.VisualBasic;
+using ln.application;
+using System.IO;
 
 namespace ln.build.server
 {
     class Program
     {
-
         static CIService CIService;
 
         static void Main(string[] args)
         {
+            ArgumentContainer ac = new ArgumentContainer(typeof(Program));
+
             CIService = new CIService();
+            ac.AddOptions(CIService);
+            ac.Parse(ref args);
+
             CIService.Initialize();
             CIService.AddPipeline(new DotNetPipeLine());
-            CIService.AddRepositoryInterface(new GiteaRepositoryInterface("https://git.l--n.de"));
+            CIService.AddRepositoryInterface(new GiteaRepositoryInterface("https://git.l--n.de"){ AuthorizationToken = "1d03e9577c404b5b4f46b340147b1d500ff95b2e", });
 
             CIService.Start();
         }
diff --git a/ln.build/CIJob.cs b/ln.build/CIJob.cs
index 3dbc4c6..8d95625 100644
--- a/ln.build/CIJob.cs
+++ b/ln.build/CIJob.cs
@@ -13,12 +13,10 @@ namespace ln.build
 {
     public class CIJob : PoolJob
     {
-        static HttpClient httpClient = new HttpClient();
-
         public string JobID { get; } = Guid.NewGuid().ToString("N");
         public string RepositoryURL { get; }
         public string WorkingDirectory { get; set; }
-        public CIService CurrentCIService { get; set; }
+        public CIService CIService { get; }
 
         public Logger Logger { get; private set; }
 
@@ -33,8 +31,13 @@ namespace ln.build
         Dictionary<string,MemoryStream> logStreams = new Dictionary<string, MemoryStream>();
         Dictionary<string,Logger> logStreamLoggers = new Dictionary<string, Logger>();
 
-        public CIJob(string repositoryURL)
+        public CIJob(CIService ciService, string repositoryURL)
+        :this(ciService, null, repositoryURL){ }
+        public CIJob(CIService ciService, RepositoryInterface repositoryInterface ,string repositoryURL)
         {
+            CIService = ciService;
+            RepositoryInterface = repositoryInterface;
+
             WorkingDirectory = Path.Combine(Path.GetTempPath(), JobID);
             Logger = new Logger(new FileLogger(Path.Combine(Path.GetTempPath(), String.Format("{0}.log", JobID))));
             Logger.Backends.Add(Logger.ConsoleLogger);
@@ -77,28 +80,10 @@ namespace ln.build
         public bool ContainsVariable(string varName) => Environment.Contains(varName);
         public CIJob SetVariable(string varName,string varValue){ Environment.Set(varName,varValue); return this; }
 
-        public async void UpdateBuildState(BuildState buildState)
+        public void UpdateBuildState(BuildState buildState)
         {
             BuildState = buildState;
-
-            string buildStateURL = String.Format("https://git.l--n.de/api/v1/repos/{0}/{1}/statuses/{2}",
-                GetVariable("REPO_OWNER"),
-                GetVariable("REPO_NAME"),
-                GetVariable("COMMIT_ID")
-                );
-
-            if (buildStateURL != null)
-            {
-                JSONObject stateObject = new JSONObject();
-                stateObject.Add("context", "ln.build");
-                stateObject.Add("description", "build job pending");
-                stateObject.Add("state", buildState.ToString().ToLower());
-                stateObject.Add("target_url", JSONNull.Instance);
-
-                HttpResponseMessage response = httpClient.PostAsync(buildStateURL, new StringContent(stateObject.ToString(),Encoding.UTF8,"application/json")).Result;
-                Logger.Log(LogLevel.DEBUG, "UpdateBuildState({0}): {1}", buildState, buildStateURL);
-                Logger.Log(LogLevel.DEBUG, "Response: {0}", response );
-            }
+            RepositoryInterface?.UpdateBuildState(this);
         }
 
         public override void RunJob()
@@ -138,9 +123,9 @@ namespace ln.build
 
         public bool DetectPipelines()
         {
-            if (CurrentCIService != null)
+            if (CIService != null)
             {
-                foreach (PipeLine pipeLine in CurrentCIService.PipeLines)
+                foreach (PipeLine pipeLine in CIService.PipeLines)
                 {
                     if (pipeLine.DetectValidity(this))
                         pipeLines.Add(pipeLine);
@@ -164,14 +149,9 @@ namespace ln.build
 
         public void Cleanup()
         {
-            CurrentCIService.CreateReport(this);
+            CIService.CreateReport(this);
             Directory.Delete(WorkingDirectory, true);
         }
 
-
-        static CIJob()
-        {
-            httpClient.DefaultRequestHeaders.Add("Authorization","token 1d03e9577c404b5b4f46b340147b1d500ff95b2e");
-        }
     }
 }
diff --git a/ln.build/CIService.cs b/ln.build/CIService.cs
index 1de019e..ed436a6 100644
--- a/ln.build/CIService.cs
+++ b/ln.build/CIService.cs
@@ -1,26 +1,42 @@
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.IO;
+using System.Net;
+using System.Net.NetworkInformation;
+using ln.application;
 using ln.build.repositories;
 using ln.http;
-using ln.http.client;
 using ln.http.router;
 using ln.json;
 using ln.logging;
+using ln.templates.html;
+using ln.templates.http;
 using ln.threading;
 using ln.type;
+using Microsoft.VisualBasic;
 
 namespace ln.build
 {
     public class CIService
     {
+        [StaticArgument( Option = 'b', LongOption = "base-directory")]
+        public string BaseDirectory { get; set; }
+
+        [StaticArgument( Option = 'u', LongOption = "base-url")]
+        public string BaseURL { get; set; }
+
+        [StaticArgument( Option = 'h', LongOption = "hostname")]
+        public string HostName { get; set; }
+
         public Pool buildPool;
-        public string ReportsDirectory { get; set; } = "./builds";
-        public Endpoint HttpEndpoint { get; } = new Endpoint(IPv6.ANY, 1888);
+        public string ReportsDirectory { get; set; }
 
         Logger webLogger;
         SimpleRouter httpRouter;
         SimpleRouter hookRouter;
+        StaticRouter staticsRouter;
+        TemplateRouter templateRouter;
         HTTPServer httpServer;
         
         List<RepositoryInterface> repositoryInterfaces = new List<RepositoryInterface>();
@@ -31,11 +47,26 @@ namespace ln.build
         public CIService()
         {
             buildPool = new Pool(2);
-            ReportsDirectory = Path.GetFullPath(ReportsDirectory);
+        }
+        public CIService(string baseDirectory) : this()
+        {
+            BaseDirectory = baseDirectory;
+            ReportsDirectory = Path.Combine(baseDirectory, "builds" );
         }
 
         public void Initialize()
         {
+            BaseDirectory ??= AppContext.BaseDirectory;
+
+            ReportsDirectory ??= Path.Combine(BaseDirectory, "builds" );
+                
+            ReportsDirectory = Path.GetFullPath(ReportsDirectory);
+
+            Logging.Log(LogLevel.INFO, "Commandline: {0}", Environment.CommandLine);
+            Logging.Log(LogLevel.INFO, "Working Directory: {0}", Environment.CurrentDirectory);
+            Logging.Log(LogLevel.INFO, "Base Directory: {0}", BaseDirectory);
+            Logging.Log(LogLevel.INFO, "Reports Directory: {0}", ReportsDirectory);
+
             Directory.CreateDirectory(ReportsDirectory);
 
             InitializeHttpServer();
@@ -43,18 +74,46 @@ namespace ln.build
         
         private void InitializeHttpServer()
         {
+            if (HostName == null)
+                HostName = FindHostName();
+
+            if (BaseURL == null)
+                BaseURL = string.Format("http://{0}:{1}", HostName, 1888);
+
+            Logging.Log(LogLevel.DEBUG, "Hostname: {0}", HostName);
+            Logging.Log(LogLevel.DEBUG, "BaseURL: {0}", BaseURL);
+
             httpRouter = new SimpleRouter();
             httpRouter.AddSimpleRoute("/builds/*", new StaticRouter(ReportsDirectory));
-            
+
             hookRouter = new SimpleRouter();
+            staticsRouter = new StaticRouter(Path.Combine(BaseDirectory, "html", "static"));
+            templateRouter = new TemplateRouter(new FileSystemTemplateSource(Path.Combine(BaseDirectory, "html", "documents"), false));
+            templateRouter.DefaultTemplatePath = "index.html";
+            templateRouter.OnPrepareRenderContext += (templateRouter, templateDocument, renderContext) => {
+                renderContext.SetScriptObject("CIService", this);
+            };
+
             httpRouter.AddSimpleRoute("/hooks/*", hookRouter);
+            httpRouter.AddSimpleRoute("/builds/:buildid/*", templateRouter);
+            httpRouter.AddSimpleRoute("/builds/:buildid", templateRouter);
+            httpRouter.AddSimpleRoute("/*", staticsRouter);
 
             webLogger = new Logger(Logger.ConsoleLogger);
             webLogger.Backends.Add(new FileLogger("ln.build.http.log"));
 
-            httpServer = new HTTPServer(HttpEndpoint, new LoggingRouter(httpRouter, webLogger));
+            httpServer = new HTTPServer(new LoggingRouter(httpRouter, webLogger));
+
+            foreach (IPAddress _ip in Dns.GetHostAddresses(HostName))
+            {
+                IPv6 ip6 = _ip;
+                httpServer.AddEndpoint(new Endpoint(ip6, 1888));
+            }
         }
 
+        public string GetJobURL(CIJob job) => string.Format("{0}/builds/{1}", BaseURL, job.JobID);
+
+
         public void Start()
         {
             buildPool.Start();
@@ -75,7 +134,6 @@ namespace ln.build
 
         public void Enqueue(CIJob job)
         {
-            job.CurrentCIService = this;
             buildPool.Enqueue(job);
         }
 
@@ -108,6 +166,19 @@ namespace ln.build
         }
 
 
+        public string FindHostName()
+        {
+            return Dns.GetHostEntry("LocalHost").HostName;
+/*            
+            string hostName = IPGlobalProperties.GetIPGlobalProperties().HostName;
+            string domainName = IPGlobalProperties.GetIPGlobalProperties().DomainName;
+
+            if (!hostName.EndsWith(domainName))
+            {
+                hostName = string.Format("{0}.{1}", hostName, domainName);
+            }
+            return hostName;
+*/        }
 
     }
 }
\ No newline at end of file
diff --git a/ln.build/html/documents/index.html b/ln.build/html/documents/index.html
new file mode 100644
index 0000000..5ec743c
--- /dev/null
+++ b/ln.build/html/documents/index.html
@@ -0,0 +1,43 @@
+<html>
+<head>
+    <title>Build State</title>
+    <script type="text/javascript" :src="CIService.BaseURL + '/js/vue/vue.js'"></script>
+    <script type="text/javascript" :src="CIService.BaseURL + '/js/ln.js'"></script>
+    <script type="text/javascript" :src="CIService.BaseURL + '/js/lib/ln.promise.js'"></script>
+    <script type="text/javascript">
+    </script>
+</head>
+<body>
+    <div id="load-banner">
+        <h1>Please stand by, loading...</h1>
+    </div>
+    <script type="text/javascript">
+LN
+.$fetch('{{ CIService.BaseURL }}/builds/{{ request.GetParameter("buildid","none") }}/build.json')
+.then((buildjson)=>{
+    var build = JSON.parse(buildjson);
+
+    LN.
+    $fetch('{{ CIService.BaseURL }}/build.html.tmpl')
+    .then((tmpl) => {
+        var e = LN.$(tmpl);
+        var b = document.getElementById('load-banner');
+        var p = b.parentElement;
+        p.appendChild(e);
+        p.removeChild(b);
+
+        var v = new Vue({
+            el: e,
+            data: {
+                buildid: '{{ request.GetParameter("buildid","none") }}',
+                build: build,
+                baseurl: '{{ CIService.BaseURL }}',
+            }
+        });
+    });
+});
+
+
+    </script>
+</body>
+</html>
\ No newline at end of file
diff --git a/ln.build/html/static/build.html.tmpl b/ln.build/html/static/build.html.tmpl
new file mode 100644
index 0000000..f10f3ac
--- /dev/null
+++ b/ln.build/html/static/build.html.tmpl
@@ -0,0 +1,12 @@
+<div>
+    <h1>Build Process {{ buildid }}</h1>
+    <span>Current State: {{ build.state }}</span>
+    <div>
+        <h2>Log Files</h2>
+        <span v-for="logname in build.steps">
+            <a
+                :href="baseurl + '/builds/' + buildid + '/' + logname"
+                >{{ logname }}</a><br>
+        </span>
+    </div>
+</div>
\ No newline at end of file
diff --git a/ln.build/html/static/js/lib/ln.base64.js b/ln.build/html/static/js/lib/ln.base64.js
new file mode 100644
index 0000000..d330541
--- /dev/null
+++ b/ln.build/html/static/js/lib/ln.base64.js
@@ -0,0 +1,84 @@
+(function(){
+    /*\
+    |*|
+    |*|  Base64 / binary data / UTF-8 strings utilities (#1)
+    |*|
+    |*|  https://developer.mozilla.org/en-US/docs/Web/API/WindowBase64/Base64_encoding_and_decoding
+    |*|
+    |*|  Author: madmurphy
+    |*|
+    |*|  Harald Wolff-Thobaben: Small adaptions to create a static class
+    |*|
+    \*/
+    class Base64
+    {
+        constructor(){
+        }
+
+        static b64ToUint6(nChr){
+            return nChr > 64 && nChr < 91 ?
+                nChr - 65
+              : nChr > 96 && nChr < 123 ?
+                nChr - 71
+              : nChr > 47 && nChr < 58 ?
+                nChr + 4
+              : nChr === 43 ?
+                62
+              : nChr === 47 ?
+                63
+              :
+                0;
+        }
+        static uint6ToB64(nUint6){
+        return nUint6 < 26 ?
+            nUint6 + 65
+            : nUint6 < 52 ?
+            nUint6 + 71
+            : nUint6 < 62 ?
+            nUint6 - 4
+            : nUint6 === 62 ?
+            43
+            : nUint6 === 63 ?
+            47
+            :
+            65;
+        }
+
+        static encode(aBytes){
+            var eqLen = (3 - (aBytes.length % 3)) % 3, sB64Enc = "";
+
+            for (var nMod3, nLen = aBytes.length, nUint24 = 0, nIdx = 0; nIdx < nLen; nIdx++) {
+                nMod3 = nIdx % 3;
+                nUint24 |= aBytes[nIdx] << (16 >>> nMod3 & 24);
+                if (nMod3 === 2 || aBytes.length - nIdx === 1) {
+                sB64Enc += String.fromCharCode(Base64.uint6ToB64(nUint24 >>> 18 & 63), Base64.uint6ToB64(nUint24 >>> 12 & 63), Base64.uint6ToB64(nUint24 >>> 6 & 63), Base64.uint6ToB64(nUint24 & 63));
+                nUint24 = 0;
+                }
+            }
+
+            return  eqLen === 0 ?
+                sB64Enc
+                :
+                sB64Enc.substring(0, sB64Enc.length - eqLen) + (eqLen === 1 ? "=" : "==");
+        }
+
+        static decode(sBase64, nBlockSize) {
+            var
+            sB64Enc = sBase64.replace(/[^A-Za-z0-9\+\/]/g, ""), nInLen = sB64Enc.length,
+            nOutLen = nBlockSize ? Math.ceil((nInLen * 3 + 1 >>> 2) / nBlockSize) * nBlockSize : nInLen * 3 + 1 >>> 2, aBytes = new Uint8Array(nOutLen);
+
+            for (var nMod3, nMod4, nUint24 = 0, nOutIdx = 0, nInIdx = 0; nInIdx < nInLen; nInIdx++) {
+            nMod4 = nInIdx & 3;
+            nUint24 |= Base64.b64ToUint6(sB64Enc.charCodeAt(nInIdx)) << 18 - 6 * nMod4;
+            if (nMod4 === 3 || nInLen - nInIdx === 1) {
+                for (nMod3 = 0; nMod3 < 3 && nOutIdx < nOutLen; nMod3++, nOutIdx++) {
+                    aBytes[nOutIdx] = nUint24 >>> (16 >>> nMod3 & 24) & 255;
+                    }
+                    nUint24 = 0;
+                }
+            }
+            return aBytes;
+        }
+    }
+    LN.$add("LN.Base64",Base64);
+})();
\ No newline at end of file
diff --git a/ln.build/html/static/js/lib/ln.identities.js b/ln.build/html/static/js/lib/ln.identities.js
new file mode 100644
index 0000000..3e35039
--- /dev/null
+++ b/ln.build/html/static/js/lib/ln.identities.js
@@ -0,0 +1,51 @@
+(function(){
+
+    class LNIdentity
+    {
+        constructor(src){
+            if (!src)
+                src = {};
+            this.IdentityName = src.IdentityName || "";
+            this.UniqueID = src.UniqueID || null;
+            this.Roles = src.AssignedRoles || [];
+        }
+
+        findRolesByName(identityName){
+            let roleMask = 0;
+            this.Roles.forEach(role => {
+                if (role.IdentityName == identityName)
+                    roleMask = role.Roles;
+            });
+            return roleMask;
+        }
+        findRolesByID(identityUniqueID){
+            let roleMask = 0;
+            this.Roles.forEach(role => {
+                if (role.UniqueID == identityUniqueID)
+                    roleMask = role.Roles;
+            });
+            return roleMask;;
+        }
+
+        hasRole(role,identityName){
+            let roles = this.findRolesByName(identityName);
+            return (roles & role) == role;
+        }
+
+    }
+
+    LNIdentity.VIEW = (1<<0);
+    LNIdentity.USE = LNIdentity.VIEW | (1<<1);
+    LNIdentity.CONTROL = LNIdentity.VIEW | (1<<2);
+    LNIdentity.MANAGE = LNIdentity.CONTROL | (1<<3);
+    LNIdentity.ADMIN = 0x0000FFFF;
+
+    LNIdentity.MANAGEROLES = (1<<16);
+
+    LNIdentity.IMPERSONATE = (1<<24);
+    LNIdentity.OWN = 0x0FFFFFFF;
+    LNIdentity.BE = 0x0000FFFF;
+    LNIdentity.SUPER = 0x7FFFFFFF;
+
+    LN.$add("LN.Identity",LNIdentity);
+})();
\ No newline at end of file
diff --git a/ln.build/html/static/js/lib/ln.promise.js b/ln.build/html/static/js/lib/ln.promise.js
new file mode 100644
index 0000000..59db42d
--- /dev/null
+++ b/ln.build/html/static/js/lib/ln.promise.js
@@ -0,0 +1,59 @@
+(function(){
+    class LNPromise
+    {
+        constructor(executor, label){
+            this.promise = new Promise(
+                (resolve,reject) => {
+                    this.resolve = (v) => {
+                        this._s.state = "ready";
+                        resolve(v);
+                        this.release();
+                    },
+                    this.reject = (e) => {
+                        this._s.state = "failed";
+                        reject(e);
+                        this.release();
+                    }
+                    executor && executor(
+                        this.resolve,
+                        this.reject
+                    );
+                }
+            );
+
+            if (!label)
+                label = "N.D.";
+
+            this._s = {
+                label,
+                state: "waiting"
+            };
+
+            this.idx = LN.$unique();
+            LNPromise.$current[this.idx] = this._s;
+        }
+
+        label(){
+            return this._s.label;
+        }
+
+        state(){
+            return this._s.state;
+        }
+
+        release(){
+            setTimeout(()=>{
+                Vue.delete(LNPromise.$current, this.idx);
+            },1000);
+        }
+
+        then(){
+            return this.promise.then.apply(this.promise, arguments);
+        }
+
+        static getCurrentPromises(){ return LNPromise.$current; }
+    }
+    LNPromise.$current = {};
+
+    LN.$add("LN.Promise",LNPromise);
+})();
\ No newline at end of file
diff --git a/ln.build/html/static/js/lib/ln.vue.components.js b/ln.build/html/static/js/lib/ln.vue.components.js
new file mode 100644
index 0000000..a8475fe
--- /dev/null
+++ b/ln.build/html/static/js/lib/ln.vue.components.js
@@ -0,0 +1,724 @@
+(function(){
+
+let nextTooltipKey = 0;
+var tooltipData = {};
+
+var tootlipVisible = false;
+var tooltipEl = LN.$(`<div class="ln-tooltip"></div>`);
+
+
+
+function findTooltipData(el){
+    let tooltip = null;
+    while (!tooltip)
+    {
+        tooltip = tooltipData[el.dataset['tooltip']];
+        el = el.parentElement;
+    }
+    return tooltip;
+}
+
+function tooltipShow(ev,tooltip){
+    tooltipEl.innerText = tooltip.value;
+    tooltipEl.setAttribute("VISIBLE","");
+
+    tootlipVisible = true;
+}
+function tooltipHide(ev,tooltip){
+    tooltipEl.removeAttribute("VISIBLE");
+    tootlipVisible = false;
+}
+
+function tooltipMouseOver(ev){
+    if (!document.body.contains(tooltipEl)){
+        document.body.appendChild(tooltipEl);
+        LN.$idle(()=>{ tooltipMouseOver(ev);});
+        return;
+    }
+
+    let tooltip = findTooltipData(ev.target);
+    if (!tooltip)
+        console.log(ev);
+
+    if (tooltipEl){
+        tooltipEl.style.left = `${ev.pageX+3}px`;
+        tooltipEl.style.top = `${ev.pageY+3}px`;
+    }
+    
+    if (tooltip.timeout)
+        clearTimeout(tooltip.timeout);
+    if (tootlipVisible){
+        tooltip.timeout = setTimeout(() => {
+            tooltipHide(ev,tooltip);
+        }, (tooltip.delay ? (tooltip.delay / 4) : 200));
+    } else {
+        tooltip.timeout = setTimeout(() => {
+            tooltipShow(ev,tooltip);
+        }, tooltip.delay || 800);
+    }
+}
+
+function tooltipMouseOut(ev){
+    let tooltip = findTooltipData(ev.target);
+    if (tooltip.timeout)
+        clearTimeout(tooltip.timeout);
+    tooltipHide(ev,tooltip);
+}
+
+Vue.directive('tooltip',{
+    bind: function(el, binding, vnode){
+        let tooltip = {
+            value: binding.value,
+            timeout: null,
+            delay: null,
+        };
+        let tooltipKey = nextTooltipKey++;
+        tooltipData[tooltipKey] = tooltip;
+        el.dataset['tooltip'] = tooltipKey;
+
+        el.addEventListener('mousemove',tooltipMouseOver);
+        el.addEventListener('mouseout',tooltipMouseOut);
+
+    },
+    update: function(el, binding, vnode, oldVnode){
+        let tooltip = findTooltipData(el);
+        tooltip.value = binding.value;
+    },
+    unbind: function(el, binding, vnode){
+        el.removeEventListener('mouseover',tooltipMouseOver);
+        el.removeEventListener('mouseout',tooltipMouseOut);
+    },
+});
+
+
+Vue.component('ln-statusbar',{
+    data: function(){
+        return {
+            current: LN.Promise.getCurrentPromises(),
+        };
+    },
+    computed: {
+        CurrentPromises: function(){
+            return this.current;
+        }
+    },
+    template: `
+<div
+    class="ln-statusbar"
+    >
+    <div>{{ LNVue.$_.statusText }}</div>
+    <div style="flex-grow: 0;">
+        <span
+            v-if="!LNVue.$_.identity.UniqueID">NOT LOGGED IN
+        </span>
+        <span
+            v-if="LNVue.$_.identity.UniqueID">{{ LNVue.$_.identity.IdentityName }}
+        </span>
+    </div>
+    <div style="flex-grow: 0;">{{ LNVue.$_.socket && LNVue.$_.socket._state }}</div>
+    <div
+        class="ln-background-tasks"
+        >{{ Object.keys(CurrentPromises).length || "No" }} Background Tasks
+        <div
+            v-if="Object.keys(CurrentPromises).length"
+            >
+            <div
+                class="block"
+                v-for="promise in CurrentPromises"
+                :state="promise.state"
+                >{{ promise.label }}</div>
+        </div>
+    </div>
+    <div style="flex-grow: 0;">{{ LNVue.$_.Version() }}</div>
+</div>
+    `,
+});
+
+Vue.component('ln-navitem',{
+    props: {
+        value: {
+            type: Object,
+            required: true,
+        },
+        key: String,
+    },
+    template: `
+    <div
+        class="ln-navitem"
+        :id="'nav-' + key"
+        >
+        <router-link
+            class="ln-navitem"
+            v-if="value.path"
+            :to="value.path"
+            v-slot="{ href, route, navigate, isActive, isExactActive }"
+            >
+                <a
+                    :href="href"
+                    @click="navigate"
+                    >{{ value.label || value.path }}</a>
+        </router-link>
+        <span
+            v-if="!value.path"
+            class="ln-navitem"
+            >{{ value.label }}</span>
+        <div class="ln-nav-children"
+            v-if="value.navigation"
+            >
+            <ln-navitem
+                v-for="(item,key) in value.navigation"
+                v-bind:value="item"
+                v-bind:key="key"
+                ></ln-navitem>
+        </div>
+    </div>
+`,
+});
+
+Vue.component('ln-navbar',{
+    props: {
+        value: {
+            type: Object,
+            default: function(){
+                return LNVue.$_.navigation;
+            }
+        },
+        component: {
+            type: [ Object, String ],
+            default: 'ln-navitem',
+        },
+    },
+    template: `
+<div class="ln-navbar">
+    <div
+        :is="component"
+        v-for="(item,key) in value"
+        v-bind:value="item"
+        v-bind:key="key"
+        >{{ item.label || item.path }}</div>
+</div>`
+});
+
+Vue.component('ln-textfield',{
+    props: {
+        value: {
+            type: String,
+            required: true,
+        },
+    },
+    template: `<input
+                    type="text"
+                    v-bind:value="value"
+                    v-on:input="$emit('input', $event.target.value)">`,
+});
+Vue.component('ln-password',{
+    props: {
+        value: {
+            type: String,
+            required: true,
+        },
+    },
+    template: `<input
+                    type="password"
+                    v-bind:value="value"
+                    autocomplete="current-password"
+                    v-on:input="$emit('input', $event.target.value)">`,
+});
+
+Vue.component('ln-textarea',{
+    props: {
+        value: {
+            type: String,
+            required: true,
+        },
+    },
+    template: `<textarea v-on:input="$emit('input', $event.target.value)">{{ value }}</textarea>`,
+});
+
+Vue.component('ln-number',{
+    model: {
+        prop: "value",
+        event: "input",
+    },
+    props: {
+        value: {
+            required: false,
+            type: Number,
+        },
+        float: {
+            type: Boolean,
+            default: false,
+        },
+    },
+
+    template: `
+<input
+    type="number"
+    v-bind:value="value"
+    v-on:input="$emit('input', $event.target.value )"
+    v-bind:step="float ? 'any' : 1"
+    >`,
+});
+
+Vue.component('ln-slider',{
+    model: {
+        prop: 'value',
+        event: 'change',
+    },
+    props: {
+        value: {
+            type: Number,
+            default: 1,
+        },
+        min: {
+            type: Number,
+            default: 0,
+        },
+        max: {
+            type: Number,
+            default: 100,
+        },
+        step: {
+            type: Number,
+            default: 1,
+        },
+        islogarithmic: {
+            type: Boolean,
+            default: false,
+        },
+        values: {
+            default: null,
+        }
+    },
+    data: function(){
+        let d = {
+        };
+
+        if (this.values instanceof Array){
+            this.min = 0;
+            this.max = this.values.length - 1;
+            this.step = 1;
+        } else if (this.values instanceof Object){
+            this.min = 0;
+            this.max = Object.keys(this.values).length - 1;
+            this.step = 1;
+        } else if (this.islogarithmic){
+            /* ToDo: Implement */
+        } else {
+
+        }
+        
+//        console.log(`min=${this.min} max=${this.max} step=${this.step} value=${this.value}`);
+
+        return d;
+    },
+    computed: {
+        keys: function(){
+            if (this.values instanceof Array)
+            {
+                let keys = new Array(this.values.length);
+                for (let n=0;n<keys.length;n++)
+                    keys[n] = n;
+                return keys;
+            } else if (this.values instanceof Object)
+            {
+                return Object.keys(this.values);
+            }
+            console.log("ln-slider.keys: ???");
+        },
+        displayValue: function(){
+            if (this.values)
+            {
+                return this.values[this.value];
+            } 
+            return this.mapFromRange(this.value);
+        },
+        sliderValue: {
+            get: function(){ return this.mapToRange(this.value); },
+            set: function(v){ this.value = this.mapFromRange(v); this.$emit('change', this.value); },
+        }
+    },
+    methods: {
+        mapToRange: function(v){
+            if (this.values)
+            {
+                if (this.values)
+                {
+                    for (let idx=0;idx<this.keys.length;idx++)
+                    {
+                        if (v == this.keys[idx])
+                        {
+                            return idx;
+                        }
+                    }
+                }
+                console.log("slider position not found!");
+                console.log(this.values);
+                console.log(v);
+                return 0;
+            }
+            return this.islogarithmic ? null : v;
+        },
+        mapFromRange: function(v){
+            if (this.values)
+            {
+                return this.keys[v];
+            } 
+            return this.islogarithmic ? null : v;
+        },
+        fireChange: function(){
+            this.$emit('change',this.value);
+        }
+    },
+    template: `
+<div class='ln-slider'>
+    <input
+        class="ln-slider"
+        type="range"
+        v-bind:min="min"
+        v-bind:max="max"
+        v-bind:step="step"
+        v-model="sliderValue"
+        @change="fireChange"
+        >{{ displayValue }}
+</div>`,
+
+});
+
+Vue.component("ln-file",{
+    props: {
+        file: {
+            type: Object,
+            required: true,
+        },
+        remove: {
+            type: Function,
+            required: false,
+        }
+    },
+    methods: {
+    },
+    template: `<div
+    class="ln-upload-file"
+    >{{ file.name }} ({{ file.size }}bytes)
+        <sym
+            @click="remove && remove(file)"
+            class="trash"
+            style="position: absolute; right: 2px;"
+            ></sym>
+    </div>`
+});
+
+Vue.component('ln-upload',{
+    model: {
+        prop: "files",
+        event: "change",
+    },
+    props: {
+        maxSize: {
+            type: Number,
+            default: 0,
+        },
+        files: {
+            type: Array,
+            default: [],
+        }
+    },
+    data: function(){ return { maxSize: this.maxSize, files: this.files, }; },
+    methods: {
+        drop: function(dropEvent){
+            dropEvent.preventDefault();
+
+            for (let n=0;n<dropEvent.dataTransfer.files.length;n++)
+            {
+                //let file = dropEvent.dataTransfer.files[n];
+                let item = dropEvent.dataTransfer.items[n];
+                let file = item.getAsFile();
+
+                this.files.push({
+                    name: file.name,
+                    size: file.size,
+                    type: file.type,
+                    file: file,
+                });
+            }
+            
+            this.$emit("change",this.files);
+            console.log("files dropped...");
+        },
+        remove(file){
+            console.log(file);
+            let idx = this.files.indexOf(file);
+            if (idx != -1)
+            {
+                this.files.splice(idx,1);
+                this.$emit("change",this.files);
+            }
+        }
+    },
+    template: `
+<div
+    class="ln-upload"
+    @drop="drop"
+    ondragover="event.preventDefault();"
+    >Dateien hierher ziehen oder auswählen:<br>
+    <input type="file" value=""><br>
+    <ln-file
+        v-for="file in files"
+        v-bind:file="file"
+        v-bind:remove="remove"
+        ></ln-file>
+</div>
+    `,
+});
+
+Vue.component('ln-select',{
+    model: {
+        prop: "value",
+        event: "change",
+    },
+    props: {
+        items: {
+            required: true,
+        },
+        value: {
+            required: true,
+        },
+        empty: {
+            type: Boolean,
+            default: true,
+        },
+        render: {
+            type: Function,
+            default: function(value){
+                return value;
+            }
+        },
+        key: {
+            type: Function,
+            default: function(key,value){
+                return key;
+            }
+        }
+    },
+    computed: {
+        prepared: {
+            get: function(){
+                let prepared = {};
+                LN.$each(this.items,(element,index) => {
+                    prepared[index] = element;
+                });
+                return prepared;
+            },
+        },
+    },
+    methods: {
+        changed: function(ev){
+            this.$emit("change", ev.target.value );
+        },
+    },
+
+    template: `<div class="ln-select">
+<select @change="changed">
+    <option
+        v-if="empty"
+        value=""
+        ></option>
+    <option
+        v-for="(item,_key) in prepared"
+        v-bind:value="key(_key,item)"
+        :selected="_key == value"
+        >{{ render(item) }}</option>
+    </select>
+</div>
+`,
+});
+
+Vue.component('ln-identity',{
+    data: function(){
+        return {
+            popupVisible: false,
+        };
+    },
+    methods: {
+        logout(){
+            LNVue.$_.authenticate("",null,"","");
+            this.popupVisible = false;
+        },
+        popup(){
+            this.popupVisible = !this.popupVisible;
+        },
+    },
+    template: `<div class="ln-identity">
+    <div
+        v-if="LNVue.$_.identity.UniqueID"
+        v-tooltip="LNVue.$_.identity.UniqueID"
+        >
+        {{ LNVue.$_.identity.IdentityName }}
+    </div>
+    <div
+        v-if="!LNVue.$_.identity.UniqueID"
+        @click="popup()"
+        >Not logged in
+    </div>
+    <button
+        class="no-border fa-solid"
+        @click="popup();"
+        >&#xf107</button>
+    <div
+        class="popup"
+        v-if="popupVisible"
+        >
+        <div
+            v-if="LNVue.$_.identity.UniqueID"
+            ><button
+                @click="logout()"
+                >Logout</button>
+        </div>        
+        <div
+            v-if="!LNVue.$_.identity.UniqueID"
+            is="ln-login-pane"
+            >
+        </div>        
+    </div>
+</div>`,
+});
+
+Vue.component('ln-popup',{
+    props: {
+        title: String,
+        visible: {
+            type: Boolean,
+            default: false
+        }
+    },
+    methods: {
+        show: function(){
+            this.visible = true;
+        },
+        hide: function(){
+            this.visible = false;
+        }
+    },
+    template: `<div class="ln-popup">
+    <div
+        class="ln-popup-frame"
+        ><div
+            class="ln-popup-title"
+            v-if="title"
+            >{{ title }}</div>
+        <div class="ln-popup-content">
+            <slot></slot>
+        </div>
+        <div
+            class="ln-popup-footer"
+            >
+            <button
+                @click="hide()"
+                >schliessen</button>
+            </div>
+    </div>
+</div>
+    `,
+});
+
+Vue.component('ln-login-pane',{
+    props: {
+    },
+    methods: {
+        stage1: function(){
+            console.log("login stage1", this.identityName);
+
+            LNVue.$_
+            .requestChallenges(this.identityName)
+            .then((challenges)=>{
+                challenges = challenges.message.Challenges;
+                if (challenges.length > 0){
+                    LNVue.$_.identity.IdentityName = this.identityName;
+                    LNVue.$_.identity.challenges = challenges;    
+                }
+            });
+        },
+        logout(){
+            LNVue.$_.authenticate("",null,"","");
+        },
+        authenticateSeededPassword(challenge){
+            let encoder = new TextEncoder();
+            let seed = LNVue.decodeHex(challenge.AuthenticationParameters);
+            let password = encoder.encode(challenge.prove);
+
+            let secretSource = ArrayBuffer.combine(seed, password, seed);
+
+            crypto.subtle.digest("SHA-256",secretSource)
+            .then((secret)=>{
+                let challengebytes = LN.Base64.decode(challenge.Challenge);
+                secret = new Uint8Array(secret);
+
+                let proveSource = ArrayBuffer.combine(challengebytes, secret, challengebytes);
+
+                crypto.subtle.digest("SHA-256",proveSource)
+                .then((prove)=>{
+                    prove = LN.Base64.encode(new Uint8Array(prove));
+                    LNVue.$_.authenticate(this.identityName,challenge.SecureAttributeID,challenge.Challenge,prove);
+                });
+            });
+
+        }
+
+    },
+    data: ()=>{
+        return {
+            identityName: "",
+        };
+    },
+    template: `<div>
+    <div
+        v-if="LNVue.$_.identity.UniqueID"
+        >
+        <div>Logged in as</div>
+        {{ LNVue.$_.identity.IdentityName }}
+        <button @click="logout()">Logout</button>
+    </div>
+    <div
+        v-if="!LNVue.$_.identity.UniqueID">
+        <div
+            v-if="LNVue.$_.identity.IdentityName == ''"
+            ><form @submit.prevent="stage1();">
+                <label for="username">Username</label>
+                <ln-textfield
+                    name="username"
+                    autocomplete="username"
+                    v-model="identityName"></ln-textfield>
+                <button
+                    :disabled="identityName == ''"
+                    type="submit"
+                    >continue</button>
+            </form>
+        </div>
+        <div
+            v-if="LNVue.$_.identity.IdentityName != ''"
+            >
+            <div
+                v-for="challenge in LNVue.$_.identity.challenges"
+                >
+                <form @submit.prevent="authenticateSeededPassword(challenge); return false;">
+                    <input style="display: none;" type="text" name="username" autocomplete="username" :value="LNVue.$_.identity.IdentityName">    
+                    <div
+                        v-if="challenge.SecureAttributeTypeName == 'SeededPassword'"
+                        >{{ challenge.SecureAttributeLabel }}
+                            <ln-password
+                                v-model="challenge.prove"
+                                ></ln-password>
+                            <button
+                                type="submit"
+                                :disabled="challenge.prove==''"
+                                >login</button>
+                </form>
+            </div>
+        </div>
+    </div>
+</div>`,
+});
+
+
+})();
\ No newline at end of file
diff --git a/ln.build/html/static/js/lib/ln.vue.js b/ln.build/html/static/js/lib/ln.vue.js
new file mode 100644
index 0000000..ac3cf61
--- /dev/null
+++ b/ln.build/html/static/js/lib/ln.vue.js
@@ -0,0 +1,274 @@
+(function (){
+
+    let exModule = {
+        label: 'Example Module',
+        routes: [
+            {
+                path: '/about',
+                template: `This is about this example!`,
+            }
+        ],
+        navigation: {
+            '99': {
+                label: 'About',
+                href: '/about'
+            } 
+        }
+
+
+
+    };
+
+    let defaultOptions = {
+        element: 'body',
+        modules: [ exModule, ],
+    };
+
+    class LNVue
+    {
+        constructor(el,options = {}){
+            this.options = Object.assign({
+                routes: [],
+                data: {},
+            }, options );
+
+            this._el = el;
+            this.data = Object.assign({}, options.data, { LNVue: this, msg: "Hello World" });
+            this.promises = [];
+
+            this.statusText = "LNVue preparing";
+
+            Vue.prototype.$LNVue = this;
+            LNVue.$_ = this;
+
+            this.navigation = {};
+            this.identity = new LN.Identity();
+
+            Promise
+            .all(LNVue.promises)
+            .then(()=>{
+                this.status("LNVue: starting");
+
+                LNVue.vueRouter.addRoutes([{
+                        path: "*",
+                        component: {
+                            template: `<h2>404 Not Found</h2>The URL you tried to reach is not existing.`,
+                        },
+                    }]);
+            },
+            (cause)=>{
+                this.status("LNVue: start failed: " + cause);
+            });
+
+            this.vue = null;
+
+            LNVue.$instance.resolve(this);
+        }
+
+        Start(){
+            Promise
+            .all(this.promises)
+            .then(()=>{
+                LN.$idle(()=>{
+                    this.vue = new Vue({
+                        el: this._el,
+                        data: this.data,
+                        router: LNVue.vueRouter,
+                        });
+                });
+            });
+            LN.$idle(()=>{
+                this.socket = new LN.Vue.WebSocket(this);
+                this.socket.open();
+            });
+            LN.$idle(()=>{
+                LNVue.$start.resolve(this);
+            });
+        }
+
+        storage(){
+            return window.localStorage;
+        }
+
+        sessionID(){
+            if (arguments.length == 1){
+                this.storage().setItem("LNVueSessionID",arguments[0]);
+                console.log("LNVue.SID <= " + arguments[0]);
+                return this;
+            } else
+            {
+                let sid = this.storage().getItem("LNVueSessionID");
+                console.log("LNVue.SID == " + sid);
+                if (!sid)
+                {
+                    sid = "00000000-0000-0000-0000-000000000000";
+                }
+                return sid;
+            }
+        }
+
+        Version(){ return "0.2alpha"; };
+        getCurrentPromises() {
+            return LN.Promise.getCurrentPromises();
+        }
+
+        status(){
+            if (arguments.length == 1){
+                this.statusText = arguments[0];
+                return this;
+            } else if (arguments.length == 0){
+                return this.statusText;
+            } else 
+                throw "LNVue.status(): too many arguments";
+        }
+
+        addModule(modSpec){
+            if (modSpec.navigation instanceof Object){
+                LNVue.deepAssign(modSpec.navigation,this.navigation);
+            }
+
+            LN.$each(modSpec.routes,(key,route)=>{
+                if ((route instanceof Object) && route.url)
+                {
+                    let p = new LN.Promise((resolve,reject)=>{
+                        LN.$fetch(route.url)
+                        .then((src)=>{
+                            this.addRoute(key,{ template: src, data: ()=>{ return this.data; }, });
+                            resolve();
+                        },
+                        (cause)=>{
+                            console.log("loading route.url failed: ",cause);
+                        });
+                    },`addModule(${route.url})`);
+                    this.promises.push(p);
+                } else if (route instanceof Object){
+                    this.addRoute(key,{ template: route.template, data: ()=>{ return this.data; }, } );
+                } else {
+                    this.addRoute(key,{ template: route, data: ()=>{ return this.data; }, } );
+                }
+            });
+        }
+
+        addRoute(path,component){
+            LNVue.vueRouter.addRoutes([
+                { path, component, },
+            ]);
+
+            if (this.vue){
+                let route = this.vue.$route;
+                LNVue.vueRouter.replace("/");
+                LNVue.vueRouter.replace(route);
+            }
+        }
+
+        /* Authentication API */
+
+        requestChallenges(identityName,secureAttributeTypeName){
+            return new Promise((resolve,reject)=>{
+                this.socket.request("AuthenticationRequest",{
+                    IdentityName: identityName,
+                    SecureAttributeTypeName: secureAttributeTypeName,
+                })
+                .then((challenges)=>{
+                    resolve(challenges);
+                },
+                (error)=>{
+                    console.log("Login challenges could not be retrieved", error);
+                }
+                );    
+            });
+        }
+
+        authenticate(identityName,secureAttributeID,challenge,prove){
+            let authenticationProve = {
+                IdentityName: identityName,
+                SecureAttributeUniqueID: secureAttributeID,
+                Challenge: challenge,
+                Prove: prove,
+            };
+            this.socket.request("AuthenticationProve", authenticationProve)
+            .then((identity)=>{
+                this.identity = new LN.Identity(identity.message);
+            },
+            (error)=>{
+                this.identity = new LN.Identity();
+            });
+        }
+
+        rpc(moduleName,methodName,parameters){
+            return new Promise((resolve,reject)=>{
+                let rpcCall = {
+                    module: moduleName,
+                    method: methodName,
+                    parameters: parameters
+                };
+                this.socket.request("RPCCall",rpcCall)
+                .then(
+                    (result)=>{
+                        if (result.message.error)
+                        {
+                            console.log("rpc call failed", result.message.error);
+                            reject(result.message.error);
+                        }
+                        else
+                            resolve(result.message.Result);
+                    },
+                    (error)=>{
+                        console.log("rpc failed", error);
+                        reject(error);
+                    }
+                );
+            });
+        }
+
+        static $LNVue(){
+            return LNVue.$_;
+        }
+    }
+    LNVue.$instance = new LN.Promise(()=>{},'LN.Vue Instance Promise');
+    LNVue.$start = new LN.Promise(()=>{},'LN Vue Startup Promise');
+
+
+
+    LNVue.vueRouter = new VueRouter({
+        mode: 'history',
+        routes: [],
+    });
+
+    LNVue.deepAssign = function(source,target){
+        LN.$each(source,function(key){
+            if (target[key] instanceof Object){
+                LNVue.deepAssign(src[key],target[key]);
+            } else {
+                target[key] = source[key];
+            }
+        });
+    }
+
+    LNVue.routes = [];
+    LNVue.promises = [];
+
+    LNVue.encodeHex = (bytes) => bytes.reduce((str, byte) => str + byte.toString(16).padStart(2, '0'), '');
+    LNVue.decodeHex = (hexString) => new Uint8Array(hexString.match(/.{1,2}/g).map(byte => parseInt(byte, 16)));
+    
+    ArrayBuffer.combine = function(...args){
+        let byteLength = 0;
+        args.forEach((arg,index)=>{
+            byteLength = byteLength + arg.byteLength;
+        });
+
+        let result = new Uint8Array(byteLength);
+        let p = 0;
+        args.forEach((arg,index)=>{
+            for (let n=0;n<arg.byteLength;n++)
+            {
+                result[p++] = arg[n];
+            }
+        });
+        console.log("combine",new Uint8Array(result));
+        return result.buffer
+    };
+
+    LN.$add("LN.Vue",LNVue);
+    LN.$add("LNVue",LNVue);
+})();
\ No newline at end of file
diff --git a/ln.build/html/static/js/lib/ln.vue.table.js b/ln.build/html/static/js/lib/ln.vue.table.js
new file mode 100644
index 0000000..64a2802
--- /dev/null
+++ b/ln.build/html/static/js/lib/ln.vue.table.js
@@ -0,0 +1,98 @@
+(function(){
+
+Vue.component('ln-table',{
+    model: {
+        prop: 'selectedRowIndex',
+        event: 'select'
+    },
+    props: {
+        columns: {
+            type: Object,
+            required: true,
+        },
+        rows: {
+            type: Array,
+            required: true,
+        },
+        selectedRowIndex: {
+            type: Number,
+            default: -1,
+        },
+    },
+    computed: {
+        selectedrow: {
+            get: function(){
+                return this.selectedRowIndex == -1 ? null : this.currentRows()[this.selectedRowIndex];
+            },
+            set: function(row){
+                let cr = this.currentRows();
+                for (let n=0;n<cr.length;n++)
+                {
+                    let r = cr[n];
+                    if (r===row)
+                    {
+                        console.log(n);
+                        this.selectRow(n);
+                    }
+                }
+                console.log('selectedrow: row not found!');
+                console.log(row);
+            }
+        }
+    },
+    data: function(){
+        return {};
+    },
+    methods: {
+        row: function(rowIndex){
+            return rowIndex == -1 ? null : this.currentRows()[rowIndex];
+        },
+        currentRows: function(){
+            return this.rows;
+        },
+        selectRow: function(rowIndex){
+            this.selectedRowIndex = rowIndex; //this.selectedrow === row ? null: row;
+            this.$emit('select', this.selectedRowIndex);
+            this.$emit('selectrow', this.selectedrow);
+        },
+        click: function(ev,rowIndex,columnKey){
+            ev.preventDefault();
+            this.selectRow(rowIndex);
+            this.emit('click', rowIndex, columnKey);
+        },
+        dblclick: function(ev,rowIndex, columnKey){
+            ev.preventDefault();
+            this.emit('dblclick', rowIndex, columnKey);
+        },
+        emit: function(signal,rowIndex,columnKey){
+            this.$emit(signal, { table: null, rowIndex, columnKey, row: this.row(rowIndex), });
+        },
+    },
+    template: `
+<table class="ln-table">
+    <thead>
+        <tr>
+            <td
+                v-for="(column,key) in columns"
+                >{{ column.label }}</td>
+            </tr>
+    </thead>
+    <tbody>
+        <tr
+            v-for="(row,index) in currentRows()"
+            :selected="selectedRowIndex==index"
+            >
+                <td
+                    v-for="(column,key) in columns"
+                    @click="click($event,index,key)"
+                    @dblclick="dblclick($event,index,key)"
+                    >{{ row[key] }}</td>
+            </tr>
+    </tbody>
+    <tfooter>
+    </tfooter>
+</table>
+`,
+});
+
+})();
diff --git a/ln.build/html/static/js/lib/ln.vue.webauthn.js b/ln.build/html/static/js/lib/ln.vue.webauthn.js
new file mode 100644
index 0000000..36c1bd6
--- /dev/null
+++ b/ln.build/html/static/js/lib/ln.vue.webauthn.js
@@ -0,0 +1,45 @@
+(function(){
+
+// LNVue.prototype.createCredentials = function(_challenge,rp,userId,crossplatform,attestation){
+//     crossplatform = crossplatform ? true : false;
+//     if (!attestation)
+//         attestation = "none";
+
+//     let credCreateOptions = {
+//         challenge: Uint8Array.from(_challenge, c => c.charCodeAt(0)),
+//         rp: {
+//             id: rp,
+//             name: 'LN.Vue Demo Application',
+//         },
+//         user: {
+//             id: Int8Array.from(userId, c => c.charCodeAt(0)),
+//             name: 'SomeUser',
+//             displayName: "Some user for now...",
+//         },
+//         pubKeyCredParams: [
+//             {
+//                 type: 'public-key',
+//                 alg: -7,
+//             }
+//         ],
+//         authenticatorSelection: {
+//             authenticatorAttachment: crossplatform ? 'cross-platform' : 'platform',
+//         },
+//         timeout: 60000,
+//         attestation: attestation,
+//     };
+
+//     console.log(credCreateOptions);
+//     navigator.credentials.create({
+//         publicKey: credCreateOptions
+//     });
+
+// };
+
+// LNVue.prototype.createAuthToken = function(){
+
+// };
+        
+
+
+})();
diff --git a/ln.build/html/static/js/lib/ln.vue.websocket.js b/ln.build/html/static/js/lib/ln.vue.websocket.js
new file mode 100644
index 0000000..2e6a8b4
--- /dev/null
+++ b/ln.build/html/static/js/lib/ln.vue.websocket.js
@@ -0,0 +1,137 @@
+(function(){
+    class LNVueWebSocket
+    {
+        constructor(lnvue,o){
+            this.LNVue = lnvue;
+            this.options = Object.assign({},o);
+            
+            if (!this.options.url)
+                this.options.url = this.constructURL();
+
+            this._id = 1;
+            this.defaultTimeout = 30000;
+            this.websocket = null;
+            this.callbacks = {};
+
+            this._state = "initialized";
+            this._retry = null;
+
+            this.closing = false;
+        }
+
+        constructURL(){
+            var pageURI = window.location;
+
+            var scheme = pageURI.scheme == "https" ? "wss:" : "ws:";
+            var host   = pageURI.host;
+
+            return scheme + "//" + host + "/socket";
+        }
+
+        open(){
+            if (this._retry){
+                clearTimeout(this._retry);
+            }
+            this.closing = false;
+
+            this.websocket = new WebSocket(this.options.url);
+            this.websocket.onopen = (e) =>{
+                console.log("WebSocket connected");
+                this._state = "ONLINE";
+
+                let WSHello = {
+                    ApplicationSessionID: this.LNVue.sessionID(),
+                };
+                console.log("WSHello request",WSHello);
+
+                this.request("WSHello",WSHello)
+                .then((wsh)=>{
+                    console.log("WSHello response",wsh);
+                    this.LNVue.sessionID(wsh.message.ApplicationSessionID);
+                    this.LNVue.identity = new LN.Identity(wsh.message.SessionIdentity);
+                });
+            };
+            this.websocket.onclose = (e)=>{ this._onclose(e); this._state = "OFFLINE"; };
+            this.websocket.onerror = (e)=>{ this._onerror(e); this._state = "ERROR"; };
+            this.websocket.onmessage = (e)=>{ this._onmessage(e); };
+            return this;
+        }
+
+        close(){
+            if (this.websocket){
+                this.closing = true;
+                this.websocket.close(200,"close() called");
+            }
+        }
+
+        request(msgtype,msg,timeout){
+            let message = {
+                id: this._id++,
+                type: msgtype,
+                message: msg,
+            }
+
+            if (!timeout)
+                timeout = this.defaultTimeout;
+
+            if (timeout != -1){
+                return new Promise((resolve,reject)=>{
+                    let to = setTimeout(()=>{
+                        delete this.callbacks[message.id];
+                        reject("timed out");
+                    },timeout);
+
+                    this.callbacks[message.id] = (msgtype,msg)=>{
+                        clearTimeout(to);
+                        delete this.callbacks[message.id];
+                        if (msgtype == "error")
+                            reject(msg);
+                        else
+                            resolve({type: msgtype,message: msg});
+                    };
+
+                    this.websocket.send(
+                        JSON.stringify(message)
+                    );    
+                });
+            } else {
+                new Promise((resolve,reject)=>{
+                    this.websocket.send(
+                        JSON.stringify(message)
+                    );
+                    resolve();
+                });
+            }
+
+        }
+
+
+        _onclose(evt){
+            this.websocket = null;
+            this.options.onclose && this.options.onclose(evt);
+            if (!this.closing)
+            {
+                this._retry = setTimeout(() => {
+                    this._retry = null;
+                    console.log("reconnect...")
+                    this.open();
+                }, 5000);    
+            }
+        }
+        _onerror(evt){
+            this.options.onerror && this.options.onerror(evt);
+        }
+        _onmessage(evt){
+            try
+            {
+                let j = JSON.parse(evt.data);
+                let cb = this.callbacks[ j.id ];
+                cb && cb(j.type,j.message);
+            } catch(exc){
+                console.log(exc,evt.data);
+            }
+
+        }
+    }
+    LN.$add("LN.Vue.WebSocket",LNVueWebSocket);
+})();
diff --git a/ln.build/html/static/js/ln.js b/ln.build/html/static/js/ln.js
new file mode 100644
index 0000000..f37151e
--- /dev/null
+++ b/ln.build/html/static/js/ln.js
@@ -0,0 +1,107 @@
+(function(globals){
+    let _unique = new Date().getTime();
+    let __idles__ = [];
+
+    class LN
+    {
+        constructor(opts){
+        }
+
+        static $each(oa,cb){
+            if (oa instanceof Array){
+                let result = [];
+                oa.forEach((value,index)=>{
+                    result.push(cb.call(value,index,value));
+                });
+                return result;
+            } else if (oa instanceof Object){
+                let result = {};
+                Object.keys(oa).forEach((key)=>{
+                    if (oa.hasOwnProperty(key)){
+                        result[key] = cb.call(oa[key],key,oa[key]);
+                    }
+                });
+                return result;
+            }
+        }
+        static $idle(cb,thisval = null){
+            let scheduled = __idles__.length > 0;
+            let n=0;
+            
+            for (;n<__idles__.length;n++){
+                let idle = __idles__[n];
+                if ((idle[0] == cb) && (idle[1] == thisval))
+                    break;
+            }
+            if (n == __idles__.length)
+                __idles__.push([cb,thisval]);
+    
+            if (!scheduled)
+                setTimeout(()=>{
+                    while (__idles__.length > 0){
+                        let idle = __idles__.pop();
+                        idle[0].call(idle[1]);
+                    }
+                },0);
+        }
+        static $unique(){
+            return _unique++;
+        }
+        static $fetch(url,cb){
+            return new LN.Promise((resolve,reject)=>{
+                fetch(url)
+                .then((response => {
+                    if (response.status.toString().startsWith("2"))
+                    {
+                        let t = response.text();
+                        cb && cb(t,null);
+                        resolve(t);
+                    } else {
+                        cb && cb(null, response.statusText);
+                        reject(response.statusText);
+                    }
+                }));
+            }, `fetch(${url})`);
+        }
+
+        static $resolve(v){
+            if (v instanceof Function)
+                return v();
+            return v;
+        }
+
+        static $add(classpath,c){
+            let p = classpath.split(".");
+            if (p.length < 1)
+                throw "invalid classpath";
+    
+            let container = globals;
+            while (p.length > 1){
+                let next = p.shift();
+                if (!container[next])
+                    container[next] = {}
+                container = container[next];
+            }
+    
+            let prev = container[p[0]];
+            container[p[0]] = c;
+    
+            if (prev)
+            {
+                LN.$each(prev,(key,value)=>{
+                    c[key] = value;
+                });
+            }
+        };
+    
+
+        static $(selector){
+            let el = document.createElement("parse");
+            el.innerHTML = selector;
+            return el.firstChild;
+        }
+    }
+    LN.prototypes = {};
+
+    LN.$add("LN", LN);
+})(window);
diff --git a/ln.build/html/static/js/vue/vue-router.js b/ln.build/html/static/js/vue/vue-router.js
new file mode 100644
index 0000000..fa6ff7c
--- /dev/null
+++ b/ln.build/html/static/js/vue/vue-router.js
@@ -0,0 +1,2890 @@
+/*!
+  * vue-router v3.1.3
+  * (c) 2019 Evan You
+  * @license MIT
+  */
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+  typeof define === 'function' && define.amd ? define(factory) :
+  (global = global || self, global.VueRouter = factory());
+}(this, function () { 'use strict';
+
+  /*  */
+
+  function assert (condition, message) {
+    if (!condition) {
+      throw new Error(("[vue-router] " + message))
+    }
+  }
+
+  function warn (condition, message) {
+    if ( !condition) {
+      typeof console !== 'undefined' && console.warn(("[vue-router] " + message));
+    }
+  }
+
+  function isError (err) {
+    return Object.prototype.toString.call(err).indexOf('Error') > -1
+  }
+
+  function isExtendedError (constructor, err) {
+    return (
+      err instanceof constructor ||
+      // _name is to support IE9 too
+      (err && (err.name === constructor.name || err._name === constructor._name))
+    )
+  }
+
+  function extend (a, b) {
+    for (var key in b) {
+      a[key] = b[key];
+    }
+    return a
+  }
+
+  var View = {
+    name: 'RouterView',
+    functional: true,
+    props: {
+      name: {
+        type: String,
+        default: 'default'
+      }
+    },
+    render: function render (_, ref) {
+      var props = ref.props;
+      var children = ref.children;
+      var parent = ref.parent;
+      var data = ref.data;
+
+      // used by devtools to display a router-view badge
+      data.routerView = true;
+
+      // directly use parent context's createElement() function
+      // so that components rendered by router-view can resolve named slots
+      var h = parent.$createElement;
+      var name = props.name;
+      var route = parent.$route;
+      var cache = parent._routerViewCache || (parent._routerViewCache = {});
+
+      // determine current view depth, also check to see if the tree
+      // has been toggled inactive but kept-alive.
+      var depth = 0;
+      var inactive = false;
+      while (parent && parent._routerRoot !== parent) {
+        var vnodeData = parent.$vnode && parent.$vnode.data;
+        if (vnodeData) {
+          if (vnodeData.routerView) {
+            depth++;
+          }
+          if (vnodeData.keepAlive && parent._inactive) {
+            inactive = true;
+          }
+        }
+        parent = parent.$parent;
+      }
+      data.routerViewDepth = depth;
+
+      // render previous view if the tree is inactive and kept-alive
+      if (inactive) {
+        return h(cache[name], data, children)
+      }
+
+      var matched = route.matched[depth];
+      // render empty node if no matched route
+      if (!matched) {
+        cache[name] = null;
+        return h()
+      }
+
+      var component = cache[name] = matched.components[name];
+
+      // attach instance registration hook
+      // this will be called in the instance's injected lifecycle hooks
+      data.registerRouteInstance = function (vm, val) {
+        // val could be undefined for unregistration
+        var current = matched.instances[name];
+        if (
+          (val && current !== vm) ||
+          (!val && current === vm)
+        ) {
+          matched.instances[name] = val;
+        }
+      }
+
+      // also register instance in prepatch hook
+      // in case the same component instance is reused across different routes
+      ;(data.hook || (data.hook = {})).prepatch = function (_, vnode) {
+        matched.instances[name] = vnode.componentInstance;
+      };
+
+      // register instance in init hook
+      // in case kept-alive component be actived when routes changed
+      data.hook.init = function (vnode) {
+        if (vnode.data.keepAlive &&
+          vnode.componentInstance &&
+          vnode.componentInstance !== matched.instances[name]
+        ) {
+          matched.instances[name] = vnode.componentInstance;
+        }
+      };
+
+      // resolve props
+      var propsToPass = data.props = resolveProps(route, matched.props && matched.props[name]);
+      if (propsToPass) {
+        // clone to prevent mutation
+        propsToPass = data.props = extend({}, propsToPass);
+        // pass non-declared props as attrs
+        var attrs = data.attrs = data.attrs || {};
+        for (var key in propsToPass) {
+          if (!component.props || !(key in component.props)) {
+            attrs[key] = propsToPass[key];
+            delete propsToPass[key];
+          }
+        }
+      }
+
+      return h(component, data, children)
+    }
+  };
+
+  function resolveProps (route, config) {
+    switch (typeof config) {
+      case 'undefined':
+        return
+      case 'object':
+        return config
+      case 'function':
+        return config(route)
+      case 'boolean':
+        return config ? route.params : undefined
+      default:
+        {
+          warn(
+            false,
+            "props in \"" + (route.path) + "\" is a " + (typeof config) + ", " +
+            "expecting an object, function or boolean."
+          );
+        }
+    }
+  }
+
+  /*  */
+
+  var encodeReserveRE = /[!'()*]/g;
+  var encodeReserveReplacer = function (c) { return '%' + c.charCodeAt(0).toString(16); };
+  var commaRE = /%2C/g;
+
+  // fixed encodeURIComponent which is more conformant to RFC3986:
+  // - escapes [!'()*]
+  // - preserve commas
+  var encode = function (str) { return encodeURIComponent(str)
+    .replace(encodeReserveRE, encodeReserveReplacer)
+    .replace(commaRE, ','); };
+
+  var decode = decodeURIComponent;
+
+  function resolveQuery (
+    query,
+    extraQuery,
+    _parseQuery
+  ) {
+    if ( extraQuery === void 0 ) extraQuery = {};
+
+    var parse = _parseQuery || parseQuery;
+    var parsedQuery;
+    try {
+      parsedQuery = parse(query || '');
+    } catch (e) {
+       warn(false, e.message);
+      parsedQuery = {};
+    }
+    for (var key in extraQuery) {
+      parsedQuery[key] = extraQuery[key];
+    }
+    return parsedQuery
+  }
+
+  function parseQuery (query) {
+    var res = {};
+
+    query = query.trim().replace(/^(\?|#|&)/, '');
+
+    if (!query) {
+      return res
+    }
+
+    query.split('&').forEach(function (param) {
+      var parts = param.replace(/\+/g, ' ').split('=');
+      var key = decode(parts.shift());
+      var val = parts.length > 0
+        ? decode(parts.join('='))
+        : null;
+
+      if (res[key] === undefined) {
+        res[key] = val;
+      } else if (Array.isArray(res[key])) {
+        res[key].push(val);
+      } else {
+        res[key] = [res[key], val];
+      }
+    });
+
+    return res
+  }
+
+  function stringifyQuery (obj) {
+    var res = obj ? Object.keys(obj).map(function (key) {
+      var val = obj[key];
+
+      if (val === undefined) {
+        return ''
+      }
+
+      if (val === null) {
+        return encode(key)
+      }
+
+      if (Array.isArray(val)) {
+        var result = [];
+        val.forEach(function (val2) {
+          if (val2 === undefined) {
+            return
+          }
+          if (val2 === null) {
+            result.push(encode(key));
+          } else {
+            result.push(encode(key) + '=' + encode(val2));
+          }
+        });
+        return result.join('&')
+      }
+
+      return encode(key) + '=' + encode(val)
+    }).filter(function (x) { return x.length > 0; }).join('&') : null;
+    return res ? ("?" + res) : ''
+  }
+
+  /*  */
+
+  var trailingSlashRE = /\/?$/;
+
+  function createRoute (
+    record,
+    location,
+    redirectedFrom,
+    router
+  ) {
+    var stringifyQuery = router && router.options.stringifyQuery;
+
+    var query = location.query || {};
+    try {
+      query = clone(query);
+    } catch (e) {}
+
+    var route = {
+      name: location.name || (record && record.name),
+      meta: (record && record.meta) || {},
+      path: location.path || '/',
+      hash: location.hash || '',
+      query: query,
+      params: location.params || {},
+      fullPath: getFullPath(location, stringifyQuery),
+      matched: record ? formatMatch(record) : []
+    };
+    if (redirectedFrom) {
+      route.redirectedFrom = getFullPath(redirectedFrom, stringifyQuery);
+    }
+    return Object.freeze(route)
+  }
+
+  function clone (value) {
+    if (Array.isArray(value)) {
+      return value.map(clone)
+    } else if (value && typeof value === 'object') {
+      var res = {};
+      for (var key in value) {
+        res[key] = clone(value[key]);
+      }
+      return res
+    } else {
+      return value
+    }
+  }
+
+  // the starting route that represents the initial state
+  var START = createRoute(null, {
+    path: '/'
+  });
+
+  function formatMatch (record) {
+    var res = [];
+    while (record) {
+      res.unshift(record);
+      record = record.parent;
+    }
+    return res
+  }
+
+  function getFullPath (
+    ref,
+    _stringifyQuery
+  ) {
+    var path = ref.path;
+    var query = ref.query; if ( query === void 0 ) query = {};
+    var hash = ref.hash; if ( hash === void 0 ) hash = '';
+
+    var stringify = _stringifyQuery || stringifyQuery;
+    return (path || '/') + stringify(query) + hash
+  }
+
+  function isSameRoute (a, b) {
+    if (b === START) {
+      return a === b
+    } else if (!b) {
+      return false
+    } else if (a.path && b.path) {
+      return (
+        a.path.replace(trailingSlashRE, '') === b.path.replace(trailingSlashRE, '') &&
+        a.hash === b.hash &&
+        isObjectEqual(a.query, b.query)
+      )
+    } else if (a.name && b.name) {
+      return (
+        a.name === b.name &&
+        a.hash === b.hash &&
+        isObjectEqual(a.query, b.query) &&
+        isObjectEqual(a.params, b.params)
+      )
+    } else {
+      return false
+    }
+  }
+
+  function isObjectEqual (a, b) {
+    if ( a === void 0 ) a = {};
+    if ( b === void 0 ) b = {};
+
+    // handle null value #1566
+    if (!a || !b) { return a === b }
+    var aKeys = Object.keys(a);
+    var bKeys = Object.keys(b);
+    if (aKeys.length !== bKeys.length) {
+      return false
+    }
+    return aKeys.every(function (key) {
+      var aVal = a[key];
+      var bVal = b[key];
+      // check nested equality
+      if (typeof aVal === 'object' && typeof bVal === 'object') {
+        return isObjectEqual(aVal, bVal)
+      }
+      return String(aVal) === String(bVal)
+    })
+  }
+
+  function isIncludedRoute (current, target) {
+    return (
+      current.path.replace(trailingSlashRE, '/').indexOf(
+        target.path.replace(trailingSlashRE, '/')
+      ) === 0 &&
+      (!target.hash || current.hash === target.hash) &&
+      queryIncludes(current.query, target.query)
+    )
+  }
+
+  function queryIncludes (current, target) {
+    for (var key in target) {
+      if (!(key in current)) {
+        return false
+      }
+    }
+    return true
+  }
+
+  /*  */
+
+  function resolvePath (
+    relative,
+    base,
+    append
+  ) {
+    var firstChar = relative.charAt(0);
+    if (firstChar === '/') {
+      return relative
+    }
+
+    if (firstChar === '?' || firstChar === '#') {
+      return base + relative
+    }
+
+    var stack = base.split('/');
+
+    // remove trailing segment if:
+    // - not appending
+    // - appending to trailing slash (last segment is empty)
+    if (!append || !stack[stack.length - 1]) {
+      stack.pop();
+    }
+
+    // resolve relative path
+    var segments = relative.replace(/^\//, '').split('/');
+    for (var i = 0; i < segments.length; i++) {
+      var segment = segments[i];
+      if (segment === '..') {
+        stack.pop();
+      } else if (segment !== '.') {
+        stack.push(segment);
+      }
+    }
+
+    // ensure leading slash
+    if (stack[0] !== '') {
+      stack.unshift('');
+    }
+
+    return stack.join('/')
+  }
+
+  function parsePath (path) {
+    var hash = '';
+    var query = '';
+
+    var hashIndex = path.indexOf('#');
+    if (hashIndex >= 0) {
+      hash = path.slice(hashIndex);
+      path = path.slice(0, hashIndex);
+    }
+
+    var queryIndex = path.indexOf('?');
+    if (queryIndex >= 0) {
+      query = path.slice(queryIndex + 1);
+      path = path.slice(0, queryIndex);
+    }
+
+    return {
+      path: path,
+      query: query,
+      hash: hash
+    }
+  }
+
+  function cleanPath (path) {
+    return path.replace(/\/\//g, '/')
+  }
+
+  var isarray = Array.isArray || function (arr) {
+    return Object.prototype.toString.call(arr) == '[object Array]';
+  };
+
+  /**
+   * Expose `pathToRegexp`.
+   */
+  var pathToRegexp_1 = pathToRegexp;
+  var parse_1 = parse;
+  var compile_1 = compile;
+  var tokensToFunction_1 = tokensToFunction;
+  var tokensToRegExp_1 = tokensToRegExp;
+
+  /**
+   * The main path matching regexp utility.
+   *
+   * @type {RegExp}
+   */
+  var PATH_REGEXP = new RegExp([
+    // Match escaped characters that would otherwise appear in future matches.
+    // This allows the user to escape special characters that won't transform.
+    '(\\\\.)',
+    // Match Express-style parameters and un-named parameters with a prefix
+    // and optional suffixes. Matches appear as:
+    //
+    // "/:test(\\d+)?" => ["/", "test", "\d+", undefined, "?", undefined]
+    // "/route(\\d+)"  => [undefined, undefined, undefined, "\d+", undefined, undefined]
+    // "/*"            => ["/", undefined, undefined, undefined, undefined, "*"]
+    '([\\/.])?(?:(?:\\:(\\w+)(?:\\(((?:\\\\.|[^\\\\()])+)\\))?|\\(((?:\\\\.|[^\\\\()])+)\\))([+*?])?|(\\*))'
+  ].join('|'), 'g');
+
+  /**
+   * Parse a string for the raw tokens.
+   *
+   * @param  {string}  str
+   * @param  {Object=} options
+   * @return {!Array}
+   */
+  function parse (str, options) {
+    var tokens = [];
+    var key = 0;
+    var index = 0;
+    var path = '';
+    var defaultDelimiter = options && options.delimiter || '/';
+    var res;
+
+    while ((res = PATH_REGEXP.exec(str)) != null) {
+      var m = res[0];
+      var escaped = res[1];
+      var offset = res.index;
+      path += str.slice(index, offset);
+      index = offset + m.length;
+
+      // Ignore already escaped sequences.
+      if (escaped) {
+        path += escaped[1];
+        continue
+      }
+
+      var next = str[index];
+      var prefix = res[2];
+      var name = res[3];
+      var capture = res[4];
+      var group = res[5];
+      var modifier = res[6];
+      var asterisk = res[7];
+
+      // Push the current path onto the tokens.
+      if (path) {
+        tokens.push(path);
+        path = '';
+      }
+
+      var partial = prefix != null && next != null && next !== prefix;
+      var repeat = modifier === '+' || modifier === '*';
+      var optional = modifier === '?' || modifier === '*';
+      var delimiter = res[2] || defaultDelimiter;
+      var pattern = capture || group;
+
+      tokens.push({
+        name: name || key++,
+        prefix: prefix || '',
+        delimiter: delimiter,
+        optional: optional,
+        repeat: repeat,
+        partial: partial,
+        asterisk: !!asterisk,
+        pattern: pattern ? escapeGroup(pattern) : (asterisk ? '.*' : '[^' + escapeString(delimiter) + ']+?')
+      });
+    }
+
+    // Match any characters still remaining.
+    if (index < str.length) {
+      path += str.substr(index);
+    }
+
+    // If the path exists, push it onto the end.
+    if (path) {
+      tokens.push(path);
+    }
+
+    return tokens
+  }
+
+  /**
+   * Compile a string to a template function for the path.
+   *
+   * @param  {string}             str
+   * @param  {Object=}            options
+   * @return {!function(Object=, Object=)}
+   */
+  function compile (str, options) {
+    return tokensToFunction(parse(str, options))
+  }
+
+  /**
+   * Prettier encoding of URI path segments.
+   *
+   * @param  {string}
+   * @return {string}
+   */
+  function encodeURIComponentPretty (str) {
+    return encodeURI(str).replace(/[\/?#]/g, function (c) {
+      return '%' + c.charCodeAt(0).toString(16).toUpperCase()
+    })
+  }
+
+  /**
+   * Encode the asterisk parameter. Similar to `pretty`, but allows slashes.
+   *
+   * @param  {string}
+   * @return {string}
+   */
+  function encodeAsterisk (str) {
+    return encodeURI(str).replace(/[?#]/g, function (c) {
+      return '%' + c.charCodeAt(0).toString(16).toUpperCase()
+    })
+  }
+
+  /**
+   * Expose a method for transforming tokens into the path function.
+   */
+  function tokensToFunction (tokens) {
+    // Compile all the tokens into regexps.
+    var matches = new Array(tokens.length);
+
+    // Compile all the patterns before compilation.
+    for (var i = 0; i < tokens.length; i++) {
+      if (typeof tokens[i] === 'object') {
+        matches[i] = new RegExp('^(?:' + tokens[i].pattern + ')$');
+      }
+    }
+
+    return function (obj, opts) {
+      var path = '';
+      var data = obj || {};
+      var options = opts || {};
+      var encode = options.pretty ? encodeURIComponentPretty : encodeURIComponent;
+
+      for (var i = 0; i < tokens.length; i++) {
+        var token = tokens[i];
+
+        if (typeof token === 'string') {
+          path += token;
+
+          continue
+        }
+
+        var value = data[token.name];
+        var segment;
+
+        if (value == null) {
+          if (token.optional) {
+            // Prepend partial segment prefixes.
+            if (token.partial) {
+              path += token.prefix;
+            }
+
+            continue
+          } else {
+            throw new TypeError('Expected "' + token.name + '" to be defined')
+          }
+        }
+
+        if (isarray(value)) {
+          if (!token.repeat) {
+            throw new TypeError('Expected "' + token.name + '" to not repeat, but received `' + JSON.stringify(value) + '`')
+          }
+
+          if (value.length === 0) {
+            if (token.optional) {
+              continue
+            } else {
+              throw new TypeError('Expected "' + token.name + '" to not be empty')
+            }
+          }
+
+          for (var j = 0; j < value.length; j++) {
+            segment = encode(value[j]);
+
+            if (!matches[i].test(segment)) {
+              throw new TypeError('Expected all "' + token.name + '" to match "' + token.pattern + '", but received `' + JSON.stringify(segment) + '`')
+            }
+
+            path += (j === 0 ? token.prefix : token.delimiter) + segment;
+          }
+
+          continue
+        }
+
+        segment = token.asterisk ? encodeAsterisk(value) : encode(value);
+
+        if (!matches[i].test(segment)) {
+          throw new TypeError('Expected "' + token.name + '" to match "' + token.pattern + '", but received "' + segment + '"')
+        }
+
+        path += token.prefix + segment;
+      }
+
+      return path
+    }
+  }
+
+  /**
+   * Escape a regular expression string.
+   *
+   * @param  {string} str
+   * @return {string}
+   */
+  function escapeString (str) {
+    return str.replace(/([.+*?=^!:${}()[\]|\/\\])/g, '\\$1')
+  }
+
+  /**
+   * Escape the capturing group by escaping special characters and meaning.
+   *
+   * @param  {string} group
+   * @return {string}
+   */
+  function escapeGroup (group) {
+    return group.replace(/([=!:$\/()])/g, '\\$1')
+  }
+
+  /**
+   * Attach the keys as a property of the regexp.
+   *
+   * @param  {!RegExp} re
+   * @param  {Array}   keys
+   * @return {!RegExp}
+   */
+  function attachKeys (re, keys) {
+    re.keys = keys;
+    return re
+  }
+
+  /**
+   * Get the flags for a regexp from the options.
+   *
+   * @param  {Object} options
+   * @return {string}
+   */
+  function flags (options) {
+    return options.sensitive ? '' : 'i'
+  }
+
+  /**
+   * Pull out keys from a regexp.
+   *
+   * @param  {!RegExp} path
+   * @param  {!Array}  keys
+   * @return {!RegExp}
+   */
+  function regexpToRegexp (path, keys) {
+    // Use a negative lookahead to match only capturing groups.
+    var groups = path.source.match(/\((?!\?)/g);
+
+    if (groups) {
+      for (var i = 0; i < groups.length; i++) {
+        keys.push({
+          name: i,
+          prefix: null,
+          delimiter: null,
+          optional: false,
+          repeat: false,
+          partial: false,
+          asterisk: false,
+          pattern: null
+        });
+      }
+    }
+
+    return attachKeys(path, keys)
+  }
+
+  /**
+   * Transform an array into a regexp.
+   *
+   * @param  {!Array}  path
+   * @param  {Array}   keys
+   * @param  {!Object} options
+   * @return {!RegExp}
+   */
+  function arrayToRegexp (path, keys, options) {
+    var parts = [];
+
+    for (var i = 0; i < path.length; i++) {
+      parts.push(pathToRegexp(path[i], keys, options).source);
+    }
+
+    var regexp = new RegExp('(?:' + parts.join('|') + ')', flags(options));
+
+    return attachKeys(regexp, keys)
+  }
+
+  /**
+   * Create a path regexp from string input.
+   *
+   * @param  {string}  path
+   * @param  {!Array}  keys
+   * @param  {!Object} options
+   * @return {!RegExp}
+   */
+  function stringToRegexp (path, keys, options) {
+    return tokensToRegExp(parse(path, options), keys, options)
+  }
+
+  /**
+   * Expose a function for taking tokens and returning a RegExp.
+   *
+   * @param  {!Array}          tokens
+   * @param  {(Array|Object)=} keys
+   * @param  {Object=}         options
+   * @return {!RegExp}
+   */
+  function tokensToRegExp (tokens, keys, options) {
+    if (!isarray(keys)) {
+      options = /** @type {!Object} */ (keys || options);
+      keys = [];
+    }
+
+    options = options || {};
+
+    var strict = options.strict;
+    var end = options.end !== false;
+    var route = '';
+
+    // Iterate over the tokens and create our regexp string.
+    for (var i = 0; i < tokens.length; i++) {
+      var token = tokens[i];
+
+      if (typeof token === 'string') {
+        route += escapeString(token);
+      } else {
+        var prefix = escapeString(token.prefix);
+        var capture = '(?:' + token.pattern + ')';
+
+        keys.push(token);
+
+        if (token.repeat) {
+          capture += '(?:' + prefix + capture + ')*';
+        }
+
+        if (token.optional) {
+          if (!token.partial) {
+            capture = '(?:' + prefix + '(' + capture + '))?';
+          } else {
+            capture = prefix + '(' + capture + ')?';
+          }
+        } else {
+          capture = prefix + '(' + capture + ')';
+        }
+
+        route += capture;
+      }
+    }
+
+    var delimiter = escapeString(options.delimiter || '/');
+    var endsWithDelimiter = route.slice(-delimiter.length) === delimiter;
+
+    // In non-strict mode we allow a slash at the end of match. If the path to
+    // match already ends with a slash, we remove it for consistency. The slash
+    // is valid at the end of a path match, not in the middle. This is important
+    // in non-ending mode, where "/test/" shouldn't match "/test//route".
+    if (!strict) {
+      route = (endsWithDelimiter ? route.slice(0, -delimiter.length) : route) + '(?:' + delimiter + '(?=$))?';
+    }
+
+    if (end) {
+      route += '$';
+    } else {
+      // In non-ending mode, we need the capturing groups to match as much as
+      // possible by using a positive lookahead to the end or next path segment.
+      route += strict && endsWithDelimiter ? '' : '(?=' + delimiter + '|$)';
+    }
+
+    return attachKeys(new RegExp('^' + route, flags(options)), keys)
+  }
+
+  /**
+   * Normalize the given path string, returning a regular expression.
+   *
+   * An empty array can be passed in for the keys, which will hold the
+   * placeholder key descriptions. For example, using `/user/:id`, `keys` will
+   * contain `[{ name: 'id', delimiter: '/', optional: false, repeat: false }]`.
+   *
+   * @param  {(string|RegExp|Array)} path
+   * @param  {(Array|Object)=}       keys
+   * @param  {Object=}               options
+   * @return {!RegExp}
+   */
+  function pathToRegexp (path, keys, options) {
+    if (!isarray(keys)) {
+      options = /** @type {!Object} */ (keys || options);
+      keys = [];
+    }
+
+    options = options || {};
+
+    if (path instanceof RegExp) {
+      return regexpToRegexp(path, /** @type {!Array} */ (keys))
+    }
+
+    if (isarray(path)) {
+      return arrayToRegexp(/** @type {!Array} */ (path), /** @type {!Array} */ (keys), options)
+    }
+
+    return stringToRegexp(/** @type {string} */ (path), /** @type {!Array} */ (keys), options)
+  }
+  pathToRegexp_1.parse = parse_1;
+  pathToRegexp_1.compile = compile_1;
+  pathToRegexp_1.tokensToFunction = tokensToFunction_1;
+  pathToRegexp_1.tokensToRegExp = tokensToRegExp_1;
+
+  /*  */
+
+  // $flow-disable-line
+  var regexpCompileCache = Object.create(null);
+
+  function fillParams (
+    path,
+    params,
+    routeMsg
+  ) {
+    params = params || {};
+    try {
+      var filler =
+        regexpCompileCache[path] ||
+        (regexpCompileCache[path] = pathToRegexp_1.compile(path));
+
+      // Fix #2505 resolving asterisk routes { name: 'not-found', params: { pathMatch: '/not-found' }}
+      if (params.pathMatch) { params[0] = params.pathMatch; }
+
+      return filler(params, { pretty: true })
+    } catch (e) {
+      {
+        warn(false, ("missing param for " + routeMsg + ": " + (e.message)));
+      }
+      return ''
+    } finally {
+      // delete the 0 if it was added
+      delete params[0];
+    }
+  }
+
+  /*  */
+
+  function normalizeLocation (
+    raw,
+    current,
+    append,
+    router
+  ) {
+    var next = typeof raw === 'string' ? { path: raw } : raw;
+    // named target
+    if (next._normalized) {
+      return next
+    } else if (next.name) {
+      return extend({}, raw)
+    }
+
+    // relative params
+    if (!next.path && next.params && current) {
+      next = extend({}, next);
+      next._normalized = true;
+      var params = extend(extend({}, current.params), next.params);
+      if (current.name) {
+        next.name = current.name;
+        next.params = params;
+      } else if (current.matched.length) {
+        var rawPath = current.matched[current.matched.length - 1].path;
+        next.path = fillParams(rawPath, params, ("path " + (current.path)));
+      } else {
+        warn(false, "relative params navigation requires a current route.");
+      }
+      return next
+    }
+
+    var parsedPath = parsePath(next.path || '');
+    var basePath = (current && current.path) || '/';
+    var path = parsedPath.path
+      ? resolvePath(parsedPath.path, basePath, append || next.append)
+      : basePath;
+
+    var query = resolveQuery(
+      parsedPath.query,
+      next.query,
+      router && router.options.parseQuery
+    );
+
+    var hash = next.hash || parsedPath.hash;
+    if (hash && hash.charAt(0) !== '#') {
+      hash = "#" + hash;
+    }
+
+    return {
+      _normalized: true,
+      path: path,
+      query: query,
+      hash: hash
+    }
+  }
+
+  /*  */
+
+  // work around weird flow bug
+  var toTypes = [String, Object];
+  var eventTypes = [String, Array];
+
+  var noop = function () {};
+
+  var Link = {
+    name: 'RouterLink',
+    props: {
+      to: {
+        type: toTypes,
+        required: true
+      },
+      tag: {
+        type: String,
+        default: 'a'
+      },
+      exact: Boolean,
+      append: Boolean,
+      replace: Boolean,
+      activeClass: String,
+      exactActiveClass: String,
+      event: {
+        type: eventTypes,
+        default: 'click'
+      }
+    },
+    render: function render (h) {
+      var this$1 = this;
+
+      var router = this.$router;
+      var current = this.$route;
+      var ref = router.resolve(
+        this.to,
+        current,
+        this.append
+      );
+      var location = ref.location;
+      var route = ref.route;
+      var href = ref.href;
+
+      var classes = {};
+      var globalActiveClass = router.options.linkActiveClass;
+      var globalExactActiveClass = router.options.linkExactActiveClass;
+      // Support global empty active class
+      var activeClassFallback =
+        globalActiveClass == null ? 'router-link-active' : globalActiveClass;
+      var exactActiveClassFallback =
+        globalExactActiveClass == null
+          ? 'router-link-exact-active'
+          : globalExactActiveClass;
+      var activeClass =
+        this.activeClass == null ? activeClassFallback : this.activeClass;
+      var exactActiveClass =
+        this.exactActiveClass == null
+          ? exactActiveClassFallback
+          : this.exactActiveClass;
+
+      var compareTarget = route.redirectedFrom
+        ? createRoute(null, normalizeLocation(route.redirectedFrom), null, router)
+        : route;
+
+      classes[exactActiveClass] = isSameRoute(current, compareTarget);
+      classes[activeClass] = this.exact
+        ? classes[exactActiveClass]
+        : isIncludedRoute(current, compareTarget);
+
+      var handler = function (e) {
+        if (guardEvent(e)) {
+          if (this$1.replace) {
+            router.replace(location, noop);
+          } else {
+            router.push(location, noop);
+          }
+        }
+      };
+
+      var on = { click: guardEvent };
+      if (Array.isArray(this.event)) {
+        this.event.forEach(function (e) {
+          on[e] = handler;
+        });
+      } else {
+        on[this.event] = handler;
+      }
+
+      var data = { class: classes };
+
+      var scopedSlot =
+        !this.$scopedSlots.$hasNormal &&
+        this.$scopedSlots.default &&
+        this.$scopedSlots.default({
+          href: href,
+          route: route,
+          navigate: handler,
+          isActive: classes[activeClass],
+          isExactActive: classes[exactActiveClass]
+        });
+
+      if (scopedSlot) {
+        if (scopedSlot.length === 1) {
+          return scopedSlot[0]
+        } else if (scopedSlot.length > 1 || !scopedSlot.length) {
+          {
+            warn(
+              false,
+              ("RouterLink with to=\"" + (this.props.to) + "\" is trying to use a scoped slot but it didn't provide exactly one child.")
+            );
+          }
+          return scopedSlot.length === 0 ? h() : h('span', {}, scopedSlot)
+        }
+      }
+
+      if (this.tag === 'a') {
+        data.on = on;
+        data.attrs = { href: href };
+      } else {
+        // find the first <a> child and apply listener and href
+        var a = findAnchor(this.$slots.default);
+        if (a) {
+          // in case the <a> is a static node
+          a.isStatic = false;
+          var aData = (a.data = extend({}, a.data));
+          aData.on = aData.on || {};
+          // transform existing events in both objects into arrays so we can push later
+          for (var event in aData.on) {
+            var handler$1 = aData.on[event];
+            if (event in on) {
+              aData.on[event] = Array.isArray(handler$1) ? handler$1 : [handler$1];
+            }
+          }
+          // append new listeners for router-link
+          for (var event$1 in on) {
+            if (event$1 in aData.on) {
+              // on[event] is always a function
+              aData.on[event$1].push(on[event$1]);
+            } else {
+              aData.on[event$1] = handler;
+            }
+          }
+
+          var aAttrs = (a.data.attrs = extend({}, a.data.attrs));
+          aAttrs.href = href;
+        } else {
+          // doesn't have <a> child, apply listener to self
+          data.on = on;
+        }
+      }
+
+      return h(this.tag, data, this.$slots.default)
+    }
+  };
+
+  function guardEvent (e) {
+    // don't redirect with control keys
+    if (e.metaKey || e.altKey || e.ctrlKey || e.shiftKey) { return }
+    // don't redirect when preventDefault called
+    if (e.defaultPrevented) { return }
+    // don't redirect on right click
+    if (e.button !== undefined && e.button !== 0) { return }
+    // don't redirect if `target="_blank"`
+    if (e.currentTarget && e.currentTarget.getAttribute) {
+      var target = e.currentTarget.getAttribute('target');
+      if (/\b_blank\b/i.test(target)) { return }
+    }
+    // this may be a Weex event which doesn't have this method
+    if (e.preventDefault) {
+      e.preventDefault();
+    }
+    return true
+  }
+
+  function findAnchor (children) {
+    if (children) {
+      var child;
+      for (var i = 0; i < children.length; i++) {
+        child = children[i];
+        if (child.tag === 'a') {
+          return child
+        }
+        if (child.children && (child = findAnchor(child.children))) {
+          return child
+        }
+      }
+    }
+  }
+
+  var _Vue;
+
+  function install (Vue) {
+    if (install.installed && _Vue === Vue) { return }
+    install.installed = true;
+
+    _Vue = Vue;
+
+    var isDef = function (v) { return v !== undefined; };
+
+    var registerInstance = function (vm, callVal) {
+      var i = vm.$options._parentVnode;
+      if (isDef(i) && isDef(i = i.data) && isDef(i = i.registerRouteInstance)) {
+        i(vm, callVal);
+      }
+    };
+
+    Vue.mixin({
+      beforeCreate: function beforeCreate () {
+        if (isDef(this.$options.router)) {
+          this._routerRoot = this;
+          this._router = this.$options.router;
+          this._router.init(this);
+          Vue.util.defineReactive(this, '_route', this._router.history.current);
+        } else {
+          this._routerRoot = (this.$parent && this.$parent._routerRoot) || this;
+        }
+        registerInstance(this, this);
+      },
+      destroyed: function destroyed () {
+        registerInstance(this);
+      }
+    });
+
+    Object.defineProperty(Vue.prototype, '$router', {
+      get: function get () { return this._routerRoot._router }
+    });
+
+    Object.defineProperty(Vue.prototype, '$route', {
+      get: function get () { return this._routerRoot._route }
+    });
+
+    Vue.component('RouterView', View);
+    Vue.component('RouterLink', Link);
+
+    var strats = Vue.config.optionMergeStrategies;
+    // use the same hook merging strategy for route hooks
+    strats.beforeRouteEnter = strats.beforeRouteLeave = strats.beforeRouteUpdate = strats.created;
+  }
+
+  /*  */
+
+  var inBrowser = typeof window !== 'undefined';
+
+  /*  */
+
+  function createRouteMap (
+    routes,
+    oldPathList,
+    oldPathMap,
+    oldNameMap
+  ) {
+    // the path list is used to control path matching priority
+    var pathList = oldPathList || [];
+    // $flow-disable-line
+    var pathMap = oldPathMap || Object.create(null);
+    // $flow-disable-line
+    var nameMap = oldNameMap || Object.create(null);
+
+    routes.forEach(function (route) {
+      addRouteRecord(pathList, pathMap, nameMap, route);
+    });
+
+    // ensure wildcard routes are always at the end
+    for (var i = 0, l = pathList.length; i < l; i++) {
+      if (pathList[i] === '*') {
+        pathList.push(pathList.splice(i, 1)[0]);
+        l--;
+        i--;
+      }
+    }
+
+    {
+      // warn if routes do not include leading slashes
+      var found = pathList
+      // check for missing leading slash
+        .filter(function (path) { return path && path.charAt(0) !== '*' && path.charAt(0) !== '/'; });
+
+      if (found.length > 0) {
+        var pathNames = found.map(function (path) { return ("- " + path); }).join('\n');
+        warn(false, ("Non-nested routes must include a leading slash character. Fix the following routes: \n" + pathNames));
+      }
+    }
+
+    return {
+      pathList: pathList,
+      pathMap: pathMap,
+      nameMap: nameMap
+    }
+  }
+
+  function addRouteRecord (
+    pathList,
+    pathMap,
+    nameMap,
+    route,
+    parent,
+    matchAs
+  ) {
+    var path = route.path;
+    var name = route.name;
+    {
+      assert(path != null, "\"path\" is required in a route configuration.");
+      assert(
+        typeof route.component !== 'string',
+        "route config \"component\" for path: " + (String(
+          path || name
+        )) + " cannot be a " + "string id. Use an actual component instead."
+      );
+    }
+
+    var pathToRegexpOptions =
+      route.pathToRegexpOptions || {};
+    var normalizedPath = normalizePath(path, parent, pathToRegexpOptions.strict);
+
+    if (typeof route.caseSensitive === 'boolean') {
+      pathToRegexpOptions.sensitive = route.caseSensitive;
+    }
+
+    var record = {
+      path: normalizedPath,
+      regex: compileRouteRegex(normalizedPath, pathToRegexpOptions),
+      components: route.components || { default: route.component },
+      instances: {},
+      name: name,
+      parent: parent,
+      matchAs: matchAs,
+      redirect: route.redirect,
+      beforeEnter: route.beforeEnter,
+      meta: route.meta || {},
+      props:
+        route.props == null
+          ? {}
+          : route.components
+            ? route.props
+            : { default: route.props }
+    };
+
+    if (route.children) {
+      // Warn if route is named, does not redirect and has a default child route.
+      // If users navigate to this route by name, the default child will
+      // not be rendered (GH Issue #629)
+      {
+        if (
+          route.name &&
+          !route.redirect &&
+          route.children.some(function (child) { return /^\/?$/.test(child.path); })
+        ) {
+          warn(
+            false,
+            "Named Route '" + (route.name) + "' has a default child route. " +
+              "When navigating to this named route (:to=\"{name: '" + (route.name) + "'\"), " +
+              "the default child route will not be rendered. Remove the name from " +
+              "this route and use the name of the default child route for named " +
+              "links instead."
+          );
+        }
+      }
+      route.children.forEach(function (child) {
+        var childMatchAs = matchAs
+          ? cleanPath((matchAs + "/" + (child.path)))
+          : undefined;
+        addRouteRecord(pathList, pathMap, nameMap, child, record, childMatchAs);
+      });
+    }
+
+    if (!pathMap[record.path]) {
+      pathList.push(record.path);
+      pathMap[record.path] = record;
+    }
+
+    if (route.alias !== undefined) {
+      var aliases = Array.isArray(route.alias) ? route.alias : [route.alias];
+      for (var i = 0; i < aliases.length; ++i) {
+        var alias = aliases[i];
+        if ( alias === path) {
+          warn(
+            false,
+            ("Found an alias with the same value as the path: \"" + path + "\". You have to remove that alias. It will be ignored in development.")
+          );
+          // skip in dev to make it work
+          continue
+        }
+
+        var aliasRoute = {
+          path: alias,
+          children: route.children
+        };
+        addRouteRecord(
+          pathList,
+          pathMap,
+          nameMap,
+          aliasRoute,
+          parent,
+          record.path || '/' // matchAs
+        );
+      }
+    }
+
+    if (name) {
+      if (!nameMap[name]) {
+        nameMap[name] = record;
+      } else if ( !matchAs) {
+        warn(
+          false,
+          "Duplicate named routes definition: " +
+            "{ name: \"" + name + "\", path: \"" + (record.path) + "\" }"
+        );
+      }
+    }
+  }
+
+  function compileRouteRegex (
+    path,
+    pathToRegexpOptions
+  ) {
+    var regex = pathToRegexp_1(path, [], pathToRegexpOptions);
+    {
+      var keys = Object.create(null);
+      regex.keys.forEach(function (key) {
+        warn(
+          !keys[key.name],
+          ("Duplicate param keys in route with path: \"" + path + "\"")
+        );
+        keys[key.name] = true;
+      });
+    }
+    return regex
+  }
+
+  function normalizePath (
+    path,
+    parent,
+    strict
+  ) {
+    if (!strict) { path = path.replace(/\/$/, ''); }
+    if (path[0] === '/') { return path }
+    if (parent == null) { return path }
+    return cleanPath(((parent.path) + "/" + path))
+  }
+
+  /*  */
+
+
+
+  function createMatcher (
+    routes,
+    router
+  ) {
+    var ref = createRouteMap(routes);
+    var pathList = ref.pathList;
+    var pathMap = ref.pathMap;
+    var nameMap = ref.nameMap;
+
+    function addRoutes (routes) {
+      createRouteMap(routes, pathList, pathMap, nameMap);
+    }
+
+    function match (
+      raw,
+      currentRoute,
+      redirectedFrom
+    ) {
+      var location = normalizeLocation(raw, currentRoute, false, router);
+      var name = location.name;
+
+      if (name) {
+        var record = nameMap[name];
+        {
+          warn(record, ("Route with name '" + name + "' does not exist"));
+        }
+        if (!record) { return _createRoute(null, location) }
+        var paramNames = record.regex.keys
+          .filter(function (key) { return !key.optional; })
+          .map(function (key) { return key.name; });
+
+        if (typeof location.params !== 'object') {
+          location.params = {};
+        }
+
+        if (currentRoute && typeof currentRoute.params === 'object') {
+          for (var key in currentRoute.params) {
+            if (!(key in location.params) && paramNames.indexOf(key) > -1) {
+              location.params[key] = currentRoute.params[key];
+            }
+          }
+        }
+
+        location.path = fillParams(record.path, location.params, ("named route \"" + name + "\""));
+        return _createRoute(record, location, redirectedFrom)
+      } else if (location.path) {
+        location.params = {};
+        for (var i = 0; i < pathList.length; i++) {
+          var path = pathList[i];
+          var record$1 = pathMap[path];
+          if (matchRoute(record$1.regex, location.path, location.params)) {
+            return _createRoute(record$1, location, redirectedFrom)
+          }
+        }
+      }
+      // no match
+      return _createRoute(null, location)
+    }
+
+    function redirect (
+      record,
+      location
+    ) {
+      var originalRedirect = record.redirect;
+      var redirect = typeof originalRedirect === 'function'
+        ? originalRedirect(createRoute(record, location, null, router))
+        : originalRedirect;
+
+      if (typeof redirect === 'string') {
+        redirect = { path: redirect };
+      }
+
+      if (!redirect || typeof redirect !== 'object') {
+        {
+          warn(
+            false, ("invalid redirect option: " + (JSON.stringify(redirect)))
+          );
+        }
+        return _createRoute(null, location)
+      }
+
+      var re = redirect;
+      var name = re.name;
+      var path = re.path;
+      var query = location.query;
+      var hash = location.hash;
+      var params = location.params;
+      query = re.hasOwnProperty('query') ? re.query : query;
+      hash = re.hasOwnProperty('hash') ? re.hash : hash;
+      params = re.hasOwnProperty('params') ? re.params : params;
+
+      if (name) {
+        // resolved named direct
+        var targetRecord = nameMap[name];
+        {
+          assert(targetRecord, ("redirect failed: named route \"" + name + "\" not found."));
+        }
+        return match({
+          _normalized: true,
+          name: name,
+          query: query,
+          hash: hash,
+          params: params
+        }, undefined, location)
+      } else if (path) {
+        // 1. resolve relative redirect
+        var rawPath = resolveRecordPath(path, record);
+        // 2. resolve params
+        var resolvedPath = fillParams(rawPath, params, ("redirect route with path \"" + rawPath + "\""));
+        // 3. rematch with existing query and hash
+        return match({
+          _normalized: true,
+          path: resolvedPath,
+          query: query,
+          hash: hash
+        }, undefined, location)
+      } else {
+        {
+          warn(false, ("invalid redirect option: " + (JSON.stringify(redirect))));
+        }
+        return _createRoute(null, location)
+      }
+    }
+
+    function alias (
+      record,
+      location,
+      matchAs
+    ) {
+      var aliasedPath = fillParams(matchAs, location.params, ("aliased route with path \"" + matchAs + "\""));
+      var aliasedMatch = match({
+        _normalized: true,
+        path: aliasedPath
+      });
+      if (aliasedMatch) {
+        var matched = aliasedMatch.matched;
+        var aliasedRecord = matched[matched.length - 1];
+        location.params = aliasedMatch.params;
+        return _createRoute(aliasedRecord, location)
+      }
+      return _createRoute(null, location)
+    }
+
+    function _createRoute (
+      record,
+      location,
+      redirectedFrom
+    ) {
+      if (record && record.redirect) {
+        return redirect(record, redirectedFrom || location)
+      }
+      if (record && record.matchAs) {
+        return alias(record, location, record.matchAs)
+      }
+      return createRoute(record, location, redirectedFrom, router)
+    }
+
+    return {
+      match: match,
+      addRoutes: addRoutes
+    }
+  }
+
+  function matchRoute (
+    regex,
+    path,
+    params
+  ) {
+    var m = path.match(regex);
+
+    if (!m) {
+      return false
+    } else if (!params) {
+      return true
+    }
+
+    for (var i = 1, len = m.length; i < len; ++i) {
+      var key = regex.keys[i - 1];
+      var val = typeof m[i] === 'string' ? decodeURIComponent(m[i]) : m[i];
+      if (key) {
+        // Fix #1994: using * with props: true generates a param named 0
+        params[key.name || 'pathMatch'] = val;
+      }
+    }
+
+    return true
+  }
+
+  function resolveRecordPath (path, record) {
+    return resolvePath(path, record.parent ? record.parent.path : '/', true)
+  }
+
+  /*  */
+
+  // use User Timing api (if present) for more accurate key precision
+  var Time =
+    inBrowser && window.performance && window.performance.now
+      ? window.performance
+      : Date;
+
+  function genStateKey () {
+    return Time.now().toFixed(3)
+  }
+
+  var _key = genStateKey();
+
+  function getStateKey () {
+    return _key
+  }
+
+  function setStateKey (key) {
+    return (_key = key)
+  }
+
+  /*  */
+
+  var positionStore = Object.create(null);
+
+  function setupScroll () {
+    // Fix for #1585 for Firefox
+    // Fix for #2195 Add optional third attribute to workaround a bug in safari https://bugs.webkit.org/show_bug.cgi?id=182678
+    // Fix for #2774 Support for apps loaded from Windows file shares not mapped to network drives: replaced location.origin with
+    // window.location.protocol + '//' + window.location.host
+    // location.host contains the port and location.hostname doesn't
+    var protocolAndPath = window.location.protocol + '//' + window.location.host;
+    var absolutePath = window.location.href.replace(protocolAndPath, '');
+    window.history.replaceState({ key: getStateKey() }, '', absolutePath);
+    window.addEventListener('popstate', function (e) {
+      saveScrollPosition();
+      if (e.state && e.state.key) {
+        setStateKey(e.state.key);
+      }
+    });
+  }
+
+  function handleScroll (
+    router,
+    to,
+    from,
+    isPop
+  ) {
+    if (!router.app) {
+      return
+    }
+
+    var behavior = router.options.scrollBehavior;
+    if (!behavior) {
+      return
+    }
+
+    {
+      assert(typeof behavior === 'function', "scrollBehavior must be a function");
+    }
+
+    // wait until re-render finishes before scrolling
+    router.app.$nextTick(function () {
+      var position = getScrollPosition();
+      var shouldScroll = behavior.call(
+        router,
+        to,
+        from,
+        isPop ? position : null
+      );
+
+      if (!shouldScroll) {
+        return
+      }
+
+      if (typeof shouldScroll.then === 'function') {
+        shouldScroll
+          .then(function (shouldScroll) {
+            scrollToPosition((shouldScroll), position);
+          })
+          .catch(function (err) {
+            {
+              assert(false, err.toString());
+            }
+          });
+      } else {
+        scrollToPosition(shouldScroll, position);
+      }
+    });
+  }
+
+  function saveScrollPosition () {
+    var key = getStateKey();
+    if (key) {
+      positionStore[key] = {
+        x: window.pageXOffset,
+        y: window.pageYOffset
+      };
+    }
+  }
+
+  function getScrollPosition () {
+    var key = getStateKey();
+    if (key) {
+      return positionStore[key]
+    }
+  }
+
+  function getElementPosition (el, offset) {
+    var docEl = document.documentElement;
+    var docRect = docEl.getBoundingClientRect();
+    var elRect = el.getBoundingClientRect();
+    return {
+      x: elRect.left - docRect.left - offset.x,
+      y: elRect.top - docRect.top - offset.y
+    }
+  }
+
+  function isValidPosition (obj) {
+    return isNumber(obj.x) || isNumber(obj.y)
+  }
+
+  function normalizePosition (obj) {
+    return {
+      x: isNumber(obj.x) ? obj.x : window.pageXOffset,
+      y: isNumber(obj.y) ? obj.y : window.pageYOffset
+    }
+  }
+
+  function normalizeOffset (obj) {
+    return {
+      x: isNumber(obj.x) ? obj.x : 0,
+      y: isNumber(obj.y) ? obj.y : 0
+    }
+  }
+
+  function isNumber (v) {
+    return typeof v === 'number'
+  }
+
+  var hashStartsWithNumberRE = /^#\d/;
+
+  function scrollToPosition (shouldScroll, position) {
+    var isObject = typeof shouldScroll === 'object';
+    if (isObject && typeof shouldScroll.selector === 'string') {
+      // getElementById would still fail if the selector contains a more complicated query like #main[data-attr]
+      // but at the same time, it doesn't make much sense to select an element with an id and an extra selector
+      var el = hashStartsWithNumberRE.test(shouldScroll.selector) // $flow-disable-line
+        ? document.getElementById(shouldScroll.selector.slice(1)) // $flow-disable-line
+        : document.querySelector(shouldScroll.selector);
+
+      if (el) {
+        var offset =
+          shouldScroll.offset && typeof shouldScroll.offset === 'object'
+            ? shouldScroll.offset
+            : {};
+        offset = normalizeOffset(offset);
+        position = getElementPosition(el, offset);
+      } else if (isValidPosition(shouldScroll)) {
+        position = normalizePosition(shouldScroll);
+      }
+    } else if (isObject && isValidPosition(shouldScroll)) {
+      position = normalizePosition(shouldScroll);
+    }
+
+    if (position) {
+      window.scrollTo(position.x, position.y);
+    }
+  }
+
+  /*  */
+
+  var supportsPushState =
+    inBrowser &&
+    (function () {
+      var ua = window.navigator.userAgent;
+
+      if (
+        (ua.indexOf('Android 2.') !== -1 || ua.indexOf('Android 4.0') !== -1) &&
+        ua.indexOf('Mobile Safari') !== -1 &&
+        ua.indexOf('Chrome') === -1 &&
+        ua.indexOf('Windows Phone') === -1
+      ) {
+        return false
+      }
+
+      return window.history && 'pushState' in window.history
+    })();
+
+  function pushState (url, replace) {
+    saveScrollPosition();
+    // try...catch the pushState call to get around Safari
+    // DOM Exception 18 where it limits to 100 pushState calls
+    var history = window.history;
+    try {
+      if (replace) {
+        history.replaceState({ key: getStateKey() }, '', url);
+      } else {
+        history.pushState({ key: setStateKey(genStateKey()) }, '', url);
+      }
+    } catch (e) {
+      window.location[replace ? 'replace' : 'assign'](url);
+    }
+  }
+
+  function replaceState (url) {
+    pushState(url, true);
+  }
+
+  /*  */
+
+  function runQueue (queue, fn, cb) {
+    var step = function (index) {
+      if (index >= queue.length) {
+        cb();
+      } else {
+        if (queue[index]) {
+          fn(queue[index], function () {
+            step(index + 1);
+          });
+        } else {
+          step(index + 1);
+        }
+      }
+    };
+    step(0);
+  }
+
+  /*  */
+
+  function resolveAsyncComponents (matched) {
+    return function (to, from, next) {
+      var hasAsync = false;
+      var pending = 0;
+      var error = null;
+
+      flatMapComponents(matched, function (def, _, match, key) {
+        // if it's a function and doesn't have cid attached,
+        // assume it's an async component resolve function.
+        // we are not using Vue's default async resolving mechanism because
+        // we want to halt the navigation until the incoming component has been
+        // resolved.
+        if (typeof def === 'function' && def.cid === undefined) {
+          hasAsync = true;
+          pending++;
+
+          var resolve = once(function (resolvedDef) {
+            if (isESModule(resolvedDef)) {
+              resolvedDef = resolvedDef.default;
+            }
+            // save resolved on async factory in case it's used elsewhere
+            def.resolved = typeof resolvedDef === 'function'
+              ? resolvedDef
+              : _Vue.extend(resolvedDef);
+            match.components[key] = resolvedDef;
+            pending--;
+            if (pending <= 0) {
+              next();
+            }
+          });
+
+          var reject = once(function (reason) {
+            var msg = "Failed to resolve async component " + key + ": " + reason;
+             warn(false, msg);
+            if (!error) {
+              error = isError(reason)
+                ? reason
+                : new Error(msg);
+              next(error);
+            }
+          });
+
+          var res;
+          try {
+            res = def(resolve, reject);
+          } catch (e) {
+            reject(e);
+          }
+          if (res) {
+            if (typeof res.then === 'function') {
+              res.then(resolve, reject);
+            } else {
+              // new syntax in Vue 2.3
+              var comp = res.component;
+              if (comp && typeof comp.then === 'function') {
+                comp.then(resolve, reject);
+              }
+            }
+          }
+        }
+      });
+
+      if (!hasAsync) { next(); }
+    }
+  }
+
+  function flatMapComponents (
+    matched,
+    fn
+  ) {
+    return flatten(matched.map(function (m) {
+      return Object.keys(m.components).map(function (key) { return fn(
+        m.components[key],
+        m.instances[key],
+        m, key
+      ); })
+    }))
+  }
+
+  function flatten (arr) {
+    return Array.prototype.concat.apply([], arr)
+  }
+
+  var hasSymbol =
+    typeof Symbol === 'function' &&
+    typeof Symbol.toStringTag === 'symbol';
+
+  function isESModule (obj) {
+    return obj.__esModule || (hasSymbol && obj[Symbol.toStringTag] === 'Module')
+  }
+
+  // in Webpack 2, require.ensure now also returns a Promise
+  // so the resolve/reject functions may get called an extra time
+  // if the user uses an arrow function shorthand that happens to
+  // return that Promise.
+  function once (fn) {
+    var called = false;
+    return function () {
+      var args = [], len = arguments.length;
+      while ( len-- ) args[ len ] = arguments[ len ];
+
+      if (called) { return }
+      called = true;
+      return fn.apply(this, args)
+    }
+  }
+
+  var NavigationDuplicated = /*@__PURE__*/(function (Error) {
+    function NavigationDuplicated (normalizedLocation) {
+      Error.call(this);
+      this.name = this._name = 'NavigationDuplicated';
+      // passing the message to super() doesn't seem to work in the transpiled version
+      this.message = "Navigating to current location (\"" + (normalizedLocation.fullPath) + "\") is not allowed";
+      // add a stack property so services like Sentry can correctly display it
+      Object.defineProperty(this, 'stack', {
+        value: new Error().stack,
+        writable: true,
+        configurable: true
+      });
+      // we could also have used
+      // Error.captureStackTrace(this, this.constructor)
+      // but it only exists on node and chrome
+    }
+
+    if ( Error ) NavigationDuplicated.__proto__ = Error;
+    NavigationDuplicated.prototype = Object.create( Error && Error.prototype );
+    NavigationDuplicated.prototype.constructor = NavigationDuplicated;
+
+    return NavigationDuplicated;
+  }(Error));
+
+  // support IE9
+  NavigationDuplicated._name = 'NavigationDuplicated';
+
+  /*  */
+
+  var History = function History (router, base) {
+    this.router = router;
+    this.base = normalizeBase(base);
+    // start with a route object that stands for "nowhere"
+    this.current = START;
+    this.pending = null;
+    this.ready = false;
+    this.readyCbs = [];
+    this.readyErrorCbs = [];
+    this.errorCbs = [];
+  };
+
+  History.prototype.listen = function listen (cb) {
+    this.cb = cb;
+  };
+
+  History.prototype.onReady = function onReady (cb, errorCb) {
+    if (this.ready) {
+      cb();
+    } else {
+      this.readyCbs.push(cb);
+      if (errorCb) {
+        this.readyErrorCbs.push(errorCb);
+      }
+    }
+  };
+
+  History.prototype.onError = function onError (errorCb) {
+    this.errorCbs.push(errorCb);
+  };
+
+  History.prototype.transitionTo = function transitionTo (
+    location,
+    onComplete,
+    onAbort
+  ) {
+      var this$1 = this;
+
+    var route = this.router.match(location, this.current);
+    this.confirmTransition(
+      route,
+      function () {
+        this$1.updateRoute(route);
+        onComplete && onComplete(route);
+        this$1.ensureURL();
+
+        // fire ready cbs once
+        if (!this$1.ready) {
+          this$1.ready = true;
+          this$1.readyCbs.forEach(function (cb) {
+            cb(route);
+          });
+        }
+      },
+      function (err) {
+        if (onAbort) {
+          onAbort(err);
+        }
+        if (err && !this$1.ready) {
+          this$1.ready = true;
+          this$1.readyErrorCbs.forEach(function (cb) {
+            cb(err);
+          });
+        }
+      }
+    );
+  };
+
+  History.prototype.confirmTransition = function confirmTransition (route, onComplete, onAbort) {
+      var this$1 = this;
+
+    var current = this.current;
+    var abort = function (err) {
+      // after merging https://github.com/vuejs/vue-router/pull/2771 we
+      // When the user navigates through history through back/forward buttons
+      // we do not want to throw the error. We only throw it if directly calling
+      // push/replace. That's why it's not included in isError
+      if (!isExtendedError(NavigationDuplicated, err) && isError(err)) {
+        if (this$1.errorCbs.length) {
+          this$1.errorCbs.forEach(function (cb) {
+            cb(err);
+          });
+        } else {
+          warn(false, 'uncaught error during route navigation:');
+          console.error(err);
+        }
+      }
+      onAbort && onAbort(err);
+    };
+    if (
+      isSameRoute(route, current) &&
+      // in the case the route map has been dynamically appended to
+      route.matched.length === current.matched.length
+    ) {
+      this.ensureURL();
+      return abort(new NavigationDuplicated(route))
+    }
+
+    var ref = resolveQueue(
+      this.current.matched,
+      route.matched
+    );
+      var updated = ref.updated;
+      var deactivated = ref.deactivated;
+      var activated = ref.activated;
+
+    var queue = [].concat(
+      // in-component leave guards
+      extractLeaveGuards(deactivated),
+      // global before hooks
+      this.router.beforeHooks,
+      // in-component update hooks
+      extractUpdateHooks(updated),
+      // in-config enter guards
+      activated.map(function (m) { return m.beforeEnter; }),
+      // async components
+      resolveAsyncComponents(activated)
+    );
+
+    this.pending = route;
+    var iterator = function (hook, next) {
+      if (this$1.pending !== route) {
+        return abort()
+      }
+      try {
+        hook(route, current, function (to) {
+          if (to === false || isError(to)) {
+            // next(false) -> abort navigation, ensure current URL
+            this$1.ensureURL(true);
+            abort(to);
+          } else if (
+            typeof to === 'string' ||
+            (typeof to === 'object' &&
+              (typeof to.path === 'string' || typeof to.name === 'string'))
+          ) {
+            // next('/') or next({ path: '/' }) -> redirect
+            abort();
+            if (typeof to === 'object' && to.replace) {
+              this$1.replace(to);
+            } else {
+              this$1.push(to);
+            }
+          } else {
+            // confirm transition and pass on the value
+            next(to);
+          }
+        });
+      } catch (e) {
+        abort(e);
+      }
+    };
+
+    runQueue(queue, iterator, function () {
+      var postEnterCbs = [];
+      var isValid = function () { return this$1.current === route; };
+      // wait until async components are resolved before
+      // extracting in-component enter guards
+      var enterGuards = extractEnterGuards(activated, postEnterCbs, isValid);
+      var queue = enterGuards.concat(this$1.router.resolveHooks);
+      runQueue(queue, iterator, function () {
+        if (this$1.pending !== route) {
+          return abort()
+        }
+        this$1.pending = null;
+        onComplete(route);
+        if (this$1.router.app) {
+          this$1.router.app.$nextTick(function () {
+            postEnterCbs.forEach(function (cb) {
+              cb();
+            });
+          });
+        }
+      });
+    });
+  };
+
+  History.prototype.updateRoute = function updateRoute (route) {
+    var prev = this.current;
+    this.current = route;
+    this.cb && this.cb(route);
+    this.router.afterHooks.forEach(function (hook) {
+      hook && hook(route, prev);
+    });
+  };
+
+  function normalizeBase (base) {
+    if (!base) {
+      if (inBrowser) {
+        // respect <base> tag
+        var baseEl = document.querySelector('base');
+        base = (baseEl && baseEl.getAttribute('href')) || '/';
+        // strip full URL origin
+        base = base.replace(/^https?:\/\/[^\/]+/, '');
+      } else {
+        base = '/';
+      }
+    }
+    // make sure there's the starting slash
+    if (base.charAt(0) !== '/') {
+      base = '/' + base;
+    }
+    // remove trailing slash
+    return base.replace(/\/$/, '')
+  }
+
+  function resolveQueue (
+    current,
+    next
+  ) {
+    var i;
+    var max = Math.max(current.length, next.length);
+    for (i = 0; i < max; i++) {
+      if (current[i] !== next[i]) {
+        break
+      }
+    }
+    return {
+      updated: next.slice(0, i),
+      activated: next.slice(i),
+      deactivated: current.slice(i)
+    }
+  }
+
+  function extractGuards (
+    records,
+    name,
+    bind,
+    reverse
+  ) {
+    var guards = flatMapComponents(records, function (def, instance, match, key) {
+      var guard = extractGuard(def, name);
+      if (guard) {
+        return Array.isArray(guard)
+          ? guard.map(function (guard) { return bind(guard, instance, match, key); })
+          : bind(guard, instance, match, key)
+      }
+    });
+    return flatten(reverse ? guards.reverse() : guards)
+  }
+
+  function extractGuard (
+    def,
+    key
+  ) {
+    if (typeof def !== 'function') {
+      // extend now so that global mixins are applied.
+      def = _Vue.extend(def);
+    }
+    return def.options[key]
+  }
+
+  function extractLeaveGuards (deactivated) {
+    return extractGuards(deactivated, 'beforeRouteLeave', bindGuard, true)
+  }
+
+  function extractUpdateHooks (updated) {
+    return extractGuards(updated, 'beforeRouteUpdate', bindGuard)
+  }
+
+  function bindGuard (guard, instance) {
+    if (instance) {
+      return function boundRouteGuard () {
+        return guard.apply(instance, arguments)
+      }
+    }
+  }
+
+  function extractEnterGuards (
+    activated,
+    cbs,
+    isValid
+  ) {
+    return extractGuards(
+      activated,
+      'beforeRouteEnter',
+      function (guard, _, match, key) {
+        return bindEnterGuard(guard, match, key, cbs, isValid)
+      }
+    )
+  }
+
+  function bindEnterGuard (
+    guard,
+    match,
+    key,
+    cbs,
+    isValid
+  ) {
+    return function routeEnterGuard (to, from, next) {
+      return guard(to, from, function (cb) {
+        if (typeof cb === 'function') {
+          cbs.push(function () {
+            // #750
+            // if a router-view is wrapped with an out-in transition,
+            // the instance may not have been registered at this time.
+            // we will need to poll for registration until current route
+            // is no longer valid.
+            poll(cb, match.instances, key, isValid);
+          });
+        }
+        next(cb);
+      })
+    }
+  }
+
+  function poll (
+    cb, // somehow flow cannot infer this is a function
+    instances,
+    key,
+    isValid
+  ) {
+    if (
+      instances[key] &&
+      !instances[key]._isBeingDestroyed // do not reuse being destroyed instance
+    ) {
+      cb(instances[key]);
+    } else if (isValid()) {
+      setTimeout(function () {
+        poll(cb, instances, key, isValid);
+      }, 16);
+    }
+  }
+
+  /*  */
+
+  var HTML5History = /*@__PURE__*/(function (History) {
+    function HTML5History (router, base) {
+      var this$1 = this;
+
+      History.call(this, router, base);
+
+      var expectScroll = router.options.scrollBehavior;
+      var supportsScroll = supportsPushState && expectScroll;
+
+      if (supportsScroll) {
+        setupScroll();
+      }
+
+      var initLocation = getLocation(this.base);
+      window.addEventListener('popstate', function (e) {
+        var current = this$1.current;
+
+        // Avoiding first `popstate` event dispatched in some browsers but first
+        // history route not updated since async guard at the same time.
+        var location = getLocation(this$1.base);
+        if (this$1.current === START && location === initLocation) {
+          return
+        }
+
+        this$1.transitionTo(location, function (route) {
+          if (supportsScroll) {
+            handleScroll(router, route, current, true);
+          }
+        });
+      });
+    }
+
+    if ( History ) HTML5History.__proto__ = History;
+    HTML5History.prototype = Object.create( History && History.prototype );
+    HTML5History.prototype.constructor = HTML5History;
+
+    HTML5History.prototype.go = function go (n) {
+      window.history.go(n);
+    };
+
+    HTML5History.prototype.push = function push (location, onComplete, onAbort) {
+      var this$1 = this;
+
+      var ref = this;
+      var fromRoute = ref.current;
+      this.transitionTo(location, function (route) {
+        pushState(cleanPath(this$1.base + route.fullPath));
+        handleScroll(this$1.router, route, fromRoute, false);
+        onComplete && onComplete(route);
+      }, onAbort);
+    };
+
+    HTML5History.prototype.replace = function replace (location, onComplete, onAbort) {
+      var this$1 = this;
+
+      var ref = this;
+      var fromRoute = ref.current;
+      this.transitionTo(location, function (route) {
+        replaceState(cleanPath(this$1.base + route.fullPath));
+        handleScroll(this$1.router, route, fromRoute, false);
+        onComplete && onComplete(route);
+      }, onAbort);
+    };
+
+    HTML5History.prototype.ensureURL = function ensureURL (push) {
+      if (getLocation(this.base) !== this.current.fullPath) {
+        var current = cleanPath(this.base + this.current.fullPath);
+        push ? pushState(current) : replaceState(current);
+      }
+    };
+
+    HTML5History.prototype.getCurrentLocation = function getCurrentLocation () {
+      return getLocation(this.base)
+    };
+
+    return HTML5History;
+  }(History));
+
+  function getLocation (base) {
+    var path = decodeURI(window.location.pathname);
+    if (base && path.indexOf(base) === 0) {
+      path = path.slice(base.length);
+    }
+    return (path || '/') + window.location.search + window.location.hash
+  }
+
+  /*  */
+
+  var HashHistory = /*@__PURE__*/(function (History) {
+    function HashHistory (router, base, fallback) {
+      History.call(this, router, base);
+      // check history fallback deeplinking
+      if (fallback && checkFallback(this.base)) {
+        return
+      }
+      ensureSlash();
+    }
+
+    if ( History ) HashHistory.__proto__ = History;
+    HashHistory.prototype = Object.create( History && History.prototype );
+    HashHistory.prototype.constructor = HashHistory;
+
+    // this is delayed until the app mounts
+    // to avoid the hashchange listener being fired too early
+    HashHistory.prototype.setupListeners = function setupListeners () {
+      var this$1 = this;
+
+      var router = this.router;
+      var expectScroll = router.options.scrollBehavior;
+      var supportsScroll = supportsPushState && expectScroll;
+
+      if (supportsScroll) {
+        setupScroll();
+      }
+
+      window.addEventListener(
+        supportsPushState ? 'popstate' : 'hashchange',
+        function () {
+          var current = this$1.current;
+          if (!ensureSlash()) {
+            return
+          }
+          this$1.transitionTo(getHash(), function (route) {
+            if (supportsScroll) {
+              handleScroll(this$1.router, route, current, true);
+            }
+            if (!supportsPushState) {
+              replaceHash(route.fullPath);
+            }
+          });
+        }
+      );
+    };
+
+    HashHistory.prototype.push = function push (location, onComplete, onAbort) {
+      var this$1 = this;
+
+      var ref = this;
+      var fromRoute = ref.current;
+      this.transitionTo(
+        location,
+        function (route) {
+          pushHash(route.fullPath);
+          handleScroll(this$1.router, route, fromRoute, false);
+          onComplete && onComplete(route);
+        },
+        onAbort
+      );
+    };
+
+    HashHistory.prototype.replace = function replace (location, onComplete, onAbort) {
+      var this$1 = this;
+
+      var ref = this;
+      var fromRoute = ref.current;
+      this.transitionTo(
+        location,
+        function (route) {
+          replaceHash(route.fullPath);
+          handleScroll(this$1.router, route, fromRoute, false);
+          onComplete && onComplete(route);
+        },
+        onAbort
+      );
+    };
+
+    HashHistory.prototype.go = function go (n) {
+      window.history.go(n);
+    };
+
+    HashHistory.prototype.ensureURL = function ensureURL (push) {
+      var current = this.current.fullPath;
+      if (getHash() !== current) {
+        push ? pushHash(current) : replaceHash(current);
+      }
+    };
+
+    HashHistory.prototype.getCurrentLocation = function getCurrentLocation () {
+      return getHash()
+    };
+
+    return HashHistory;
+  }(History));
+
+  function checkFallback (base) {
+    var location = getLocation(base);
+    if (!/^\/#/.test(location)) {
+      window.location.replace(cleanPath(base + '/#' + location));
+      return true
+    }
+  }
+
+  function ensureSlash () {
+    var path = getHash();
+    if (path.charAt(0) === '/') {
+      return true
+    }
+    replaceHash('/' + path);
+    return false
+  }
+
+  function getHash () {
+    // We can't use window.location.hash here because it's not
+    // consistent across browsers - Firefox will pre-decode it!
+    var href = window.location.href;
+    var index = href.indexOf('#');
+    // empty path
+    if (index < 0) { return '' }
+
+    href = href.slice(index + 1);
+    // decode the hash but not the search or hash
+    // as search(query) is already decoded
+    // https://github.com/vuejs/vue-router/issues/2708
+    var searchIndex = href.indexOf('?');
+    if (searchIndex < 0) {
+      var hashIndex = href.indexOf('#');
+      if (hashIndex > -1) {
+        href = decodeURI(href.slice(0, hashIndex)) + href.slice(hashIndex);
+      } else { href = decodeURI(href); }
+    } else {
+      if (searchIndex > -1) {
+        href = decodeURI(href.slice(0, searchIndex)) + href.slice(searchIndex);
+      }
+    }
+
+    return href
+  }
+
+  function getUrl (path) {
+    var href = window.location.href;
+    var i = href.indexOf('#');
+    var base = i >= 0 ? href.slice(0, i) : href;
+    return (base + "#" + path)
+  }
+
+  function pushHash (path) {
+    if (supportsPushState) {
+      pushState(getUrl(path));
+    } else {
+      window.location.hash = path;
+    }
+  }
+
+  function replaceHash (path) {
+    if (supportsPushState) {
+      replaceState(getUrl(path));
+    } else {
+      window.location.replace(getUrl(path));
+    }
+  }
+
+  /*  */
+
+  var AbstractHistory = /*@__PURE__*/(function (History) {
+    function AbstractHistory (router, base) {
+      History.call(this, router, base);
+      this.stack = [];
+      this.index = -1;
+    }
+
+    if ( History ) AbstractHistory.__proto__ = History;
+    AbstractHistory.prototype = Object.create( History && History.prototype );
+    AbstractHistory.prototype.constructor = AbstractHistory;
+
+    AbstractHistory.prototype.push = function push (location, onComplete, onAbort) {
+      var this$1 = this;
+
+      this.transitionTo(
+        location,
+        function (route) {
+          this$1.stack = this$1.stack.slice(0, this$1.index + 1).concat(route);
+          this$1.index++;
+          onComplete && onComplete(route);
+        },
+        onAbort
+      );
+    };
+
+    AbstractHistory.prototype.replace = function replace (location, onComplete, onAbort) {
+      var this$1 = this;
+
+      this.transitionTo(
+        location,
+        function (route) {
+          this$1.stack = this$1.stack.slice(0, this$1.index).concat(route);
+          onComplete && onComplete(route);
+        },
+        onAbort
+      );
+    };
+
+    AbstractHistory.prototype.go = function go (n) {
+      var this$1 = this;
+
+      var targetIndex = this.index + n;
+      if (targetIndex < 0 || targetIndex >= this.stack.length) {
+        return
+      }
+      var route = this.stack[targetIndex];
+      this.confirmTransition(
+        route,
+        function () {
+          this$1.index = targetIndex;
+          this$1.updateRoute(route);
+        },
+        function (err) {
+          if (isExtendedError(NavigationDuplicated, err)) {
+            this$1.index = targetIndex;
+          }
+        }
+      );
+    };
+
+    AbstractHistory.prototype.getCurrentLocation = function getCurrentLocation () {
+      var current = this.stack[this.stack.length - 1];
+      return current ? current.fullPath : '/'
+    };
+
+    AbstractHistory.prototype.ensureURL = function ensureURL () {
+      // noop
+    };
+
+    return AbstractHistory;
+  }(History));
+
+  /*  */
+
+
+
+  var VueRouter = function VueRouter (options) {
+    if ( options === void 0 ) options = {};
+
+    this.app = null;
+    this.apps = [];
+    this.options = options;
+    this.beforeHooks = [];
+    this.resolveHooks = [];
+    this.afterHooks = [];
+    this.matcher = createMatcher(options.routes || [], this);
+
+    var mode = options.mode || 'hash';
+    this.fallback = mode === 'history' && !supportsPushState && options.fallback !== false;
+    if (this.fallback) {
+      mode = 'hash';
+    }
+    if (!inBrowser) {
+      mode = 'abstract';
+    }
+    this.mode = mode;
+
+    switch (mode) {
+      case 'history':
+        this.history = new HTML5History(this, options.base);
+        break
+      case 'hash':
+        this.history = new HashHistory(this, options.base, this.fallback);
+        break
+      case 'abstract':
+        this.history = new AbstractHistory(this, options.base);
+        break
+      default:
+        {
+          assert(false, ("invalid mode: " + mode));
+        }
+    }
+  };
+
+  var prototypeAccessors = { currentRoute: { configurable: true } };
+
+  VueRouter.prototype.match = function match (
+    raw,
+    current,
+    redirectedFrom
+  ) {
+    return this.matcher.match(raw, current, redirectedFrom)
+  };
+
+  prototypeAccessors.currentRoute.get = function () {
+    return this.history && this.history.current
+  };
+
+  VueRouter.prototype.init = function init (app /* Vue component instance */) {
+      var this$1 = this;
+
+     assert(
+      install.installed,
+      "not installed. Make sure to call `Vue.use(VueRouter)` " +
+      "before creating root instance."
+    );
+
+    this.apps.push(app);
+
+    // set up app destroyed handler
+    // https://github.com/vuejs/vue-router/issues/2639
+    app.$once('hook:destroyed', function () {
+      // clean out app from this.apps array once destroyed
+      var index = this$1.apps.indexOf(app);
+      if (index > -1) { this$1.apps.splice(index, 1); }
+      // ensure we still have a main app or null if no apps
+      // we do not release the router so it can be reused
+      if (this$1.app === app) { this$1.app = this$1.apps[0] || null; }
+    });
+
+    // main app previously initialized
+    // return as we don't need to set up new history listener
+    if (this.app) {
+      return
+    }
+
+    this.app = app;
+
+    var history = this.history;
+
+    if (history instanceof HTML5History) {
+      history.transitionTo(history.getCurrentLocation());
+    } else if (history instanceof HashHistory) {
+      var setupHashListener = function () {
+        history.setupListeners();
+      };
+      history.transitionTo(
+        history.getCurrentLocation(),
+        setupHashListener,
+        setupHashListener
+      );
+    }
+
+    history.listen(function (route) {
+      this$1.apps.forEach(function (app) {
+        app._route = route;
+      });
+    });
+  };
+
+  VueRouter.prototype.beforeEach = function beforeEach (fn) {
+    return registerHook(this.beforeHooks, fn)
+  };
+
+  VueRouter.prototype.beforeResolve = function beforeResolve (fn) {
+    return registerHook(this.resolveHooks, fn)
+  };
+
+  VueRouter.prototype.afterEach = function afterEach (fn) {
+    return registerHook(this.afterHooks, fn)
+  };
+
+  VueRouter.prototype.onReady = function onReady (cb, errorCb) {
+    this.history.onReady(cb, errorCb);
+  };
+
+  VueRouter.prototype.onError = function onError (errorCb) {
+    this.history.onError(errorCb);
+  };
+
+  VueRouter.prototype.push = function push (location, onComplete, onAbort) {
+      var this$1 = this;
+
+    // $flow-disable-line
+    if (!onComplete && !onAbort && typeof Promise !== 'undefined') {
+      return new Promise(function (resolve, reject) {
+        this$1.history.push(location, resolve, reject);
+      })
+    } else {
+      this.history.push(location, onComplete, onAbort);
+    }
+  };
+
+  VueRouter.prototype.replace = function replace (location, onComplete, onAbort) {
+      var this$1 = this;
+
+    // $flow-disable-line
+    if (!onComplete && !onAbort && typeof Promise !== 'undefined') {
+      return new Promise(function (resolve, reject) {
+        this$1.history.replace(location, resolve, reject);
+      })
+    } else {
+      this.history.replace(location, onComplete, onAbort);
+    }
+  };
+
+  VueRouter.prototype.go = function go (n) {
+    this.history.go(n);
+  };
+
+  VueRouter.prototype.back = function back () {
+    this.go(-1);
+  };
+
+  VueRouter.prototype.forward = function forward () {
+    this.go(1);
+  };
+
+  VueRouter.prototype.getMatchedComponents = function getMatchedComponents (to) {
+    var route = to
+      ? to.matched
+        ? to
+        : this.resolve(to).route
+      : this.currentRoute;
+    if (!route) {
+      return []
+    }
+    return [].concat.apply([], route.matched.map(function (m) {
+      return Object.keys(m.components).map(function (key) {
+        return m.components[key]
+      })
+    }))
+  };
+
+  VueRouter.prototype.resolve = function resolve (
+    to,
+    current,
+    append
+  ) {
+    current = current || this.history.current;
+    var location = normalizeLocation(
+      to,
+      current,
+      append,
+      this
+    );
+    var route = this.match(location, current);
+    var fullPath = route.redirectedFrom || route.fullPath;
+    var base = this.history.base;
+    var href = createHref(base, fullPath, this.mode);
+    return {
+      location: location,
+      route: route,
+      href: href,
+      // for backwards compat
+      normalizedTo: location,
+      resolved: route
+    }
+  };
+
+  VueRouter.prototype.addRoutes = function addRoutes (routes) {
+    this.matcher.addRoutes(routes);
+    if (this.history.current !== START) {
+      this.history.transitionTo(this.history.getCurrentLocation());
+    }
+  };
+
+  Object.defineProperties( VueRouter.prototype, prototypeAccessors );
+
+  function registerHook (list, fn) {
+    list.push(fn);
+    return function () {
+      var i = list.indexOf(fn);
+      if (i > -1) { list.splice(i, 1); }
+    }
+  }
+
+  function createHref (base, fullPath, mode) {
+    var path = mode === 'hash' ? '#' + fullPath : fullPath;
+    return base ? cleanPath(base + '/' + path) : path
+  }
+
+  VueRouter.install = install;
+  VueRouter.version = '3.1.3';
+
+  if (inBrowser && window.Vue) {
+    window.Vue.use(VueRouter);
+  }
+
+  return VueRouter;
+
+}));
diff --git a/ln.build/html/static/js/vue/vue.js b/ln.build/html/static/js/vue/vue.js
new file mode 100644
index 0000000..919aa12
--- /dev/null
+++ b/ln.build/html/static/js/vue/vue.js
@@ -0,0 +1,11965 @@
+/*!
+ * Vue.js v2.6.12
+ * (c) 2014-2020 Evan You
+ * Released under the MIT License.
+ */
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+  typeof define === 'function' && define.amd ? define(factory) :
+  (global = global || self, global.Vue = factory());
+}(this, function () { 'use strict';
+
+  /*  */
+
+  var emptyObject = Object.freeze({});
+
+  // These helpers produce better VM code in JS engines due to their
+  // explicitness and function inlining.
+  function isUndef (v) {
+    return v === undefined || v === null
+  }
+
+  function isDef (v) {
+    return v !== undefined && v !== null
+  }
+
+  function isTrue (v) {
+    return v === true
+  }
+
+  function isFalse (v) {
+    return v === false
+  }
+
+  /**
+   * Check if value is primitive.
+   */
+  function isPrimitive (value) {
+    return (
+      typeof value === 'string' ||
+      typeof value === 'number' ||
+      // $flow-disable-line
+      typeof value === 'symbol' ||
+      typeof value === 'boolean'
+    )
+  }
+
+  /**
+   * Quick object check - this is primarily used to tell
+   * Objects from primitive values when we know the value
+   * is a JSON-compliant type.
+   */
+  function isObject (obj) {
+    return obj !== null && typeof obj === 'object'
+  }
+
+  /**
+   * Get the raw type string of a value, e.g., [object Object].
+   */
+  var _toString = Object.prototype.toString;
+
+  function toRawType (value) {
+    return _toString.call(value).slice(8, -1)
+  }
+
+  /**
+   * Strict object type check. Only returns true
+   * for plain JavaScript objects.
+   */
+  function isPlainObject (obj) {
+    return _toString.call(obj) === '[object Object]'
+  }
+
+  function isRegExp (v) {
+    return _toString.call(v) === '[object RegExp]'
+  }
+
+  /**
+   * Check if val is a valid array index.
+   */
+  function isValidArrayIndex (val) {
+    var n = parseFloat(String(val));
+    return n >= 0 && Math.floor(n) === n && isFinite(val)
+  }
+
+  function isPromise (val) {
+    return (
+      isDef(val) &&
+      typeof val.then === 'function' &&
+      typeof val.catch === 'function'
+    )
+  }
+
+  /**
+   * Convert a value to a string that is actually rendered.
+   */
+  function toString (val) {
+    return val == null
+      ? ''
+      : Array.isArray(val) || (isPlainObject(val) && val.toString === _toString)
+        ? JSON.stringify(val, null, 2)
+        : String(val)
+  }
+
+  /**
+   * Convert an input value to a number for persistence.
+   * If the conversion fails, return original string.
+   */
+  function toNumber (val) {
+    var n = parseFloat(val);
+    return isNaN(n) ? val : n
+  }
+
+  /**
+   * Make a map and return a function for checking if a key
+   * is in that map.
+   */
+  function makeMap (
+    str,
+    expectsLowerCase
+  ) {
+    var map = Object.create(null);
+    var list = str.split(',');
+    for (var i = 0; i < list.length; i++) {
+      map[list[i]] = true;
+    }
+    return expectsLowerCase
+      ? function (val) { return map[val.toLowerCase()]; }
+      : function (val) { return map[val]; }
+  }
+
+  /**
+   * Check if a tag is a built-in tag.
+   */
+  var isBuiltInTag = makeMap('slot,component', true);
+
+  /**
+   * Check if an attribute is a reserved attribute.
+   */
+  var isReservedAttribute = makeMap('key,ref,slot,slot-scope,is');
+
+  /**
+   * Remove an item from an array.
+   */
+  function remove (arr, item) {
+    if (arr.length) {
+      var index = arr.indexOf(item);
+      if (index > -1) {
+        return arr.splice(index, 1)
+      }
+    }
+  }
+
+  /**
+   * Check whether an object has the property.
+   */
+  var hasOwnProperty = Object.prototype.hasOwnProperty;
+  function hasOwn (obj, key) {
+    return hasOwnProperty.call(obj, key)
+  }
+
+  /**
+   * Create a cached version of a pure function.
+   */
+  function cached (fn) {
+    var cache = Object.create(null);
+    return (function cachedFn (str) {
+      var hit = cache[str];
+      return hit || (cache[str] = fn(str))
+    })
+  }
+
+  /**
+   * Camelize a hyphen-delimited string.
+   */
+  var camelizeRE = /-(\w)/g;
+  var camelize = cached(function (str) {
+    return str.replace(camelizeRE, function (_, c) { return c ? c.toUpperCase() : ''; })
+  });
+
+  /**
+   * Capitalize a string.
+   */
+  var capitalize = cached(function (str) {
+    return str.charAt(0).toUpperCase() + str.slice(1)
+  });
+
+  /**
+   * Hyphenate a camelCase string.
+   */
+  var hyphenateRE = /\B([A-Z])/g;
+  var hyphenate = cached(function (str) {
+    return str.replace(hyphenateRE, '-$1').toLowerCase()
+  });
+
+  /**
+   * Simple bind polyfill for environments that do not support it,
+   * e.g., PhantomJS 1.x. Technically, we don't need this anymore
+   * since native bind is now performant enough in most browsers.
+   * But removing it would mean breaking code that was able to run in
+   * PhantomJS 1.x, so this must be kept for backward compatibility.
+   */
+
+  /* istanbul ignore next */
+  function polyfillBind (fn, ctx) {
+    function boundFn (a) {
+      var l = arguments.length;
+      return l
+        ? l > 1
+          ? fn.apply(ctx, arguments)
+          : fn.call(ctx, a)
+        : fn.call(ctx)
+    }
+
+    boundFn._length = fn.length;
+    return boundFn
+  }
+
+  function nativeBind (fn, ctx) {
+    return fn.bind(ctx)
+  }
+
+  var bind = Function.prototype.bind
+    ? nativeBind
+    : polyfillBind;
+
+  /**
+   * Convert an Array-like object to a real Array.
+   */
+  function toArray (list, start) {
+    start = start || 0;
+    var i = list.length - start;
+    var ret = new Array(i);
+    while (i--) {
+      ret[i] = list[i + start];
+    }
+    return ret
+  }
+
+  /**
+   * Mix properties into target object.
+   */
+  function extend (to, _from) {
+    for (var key in _from) {
+      to[key] = _from[key];
+    }
+    return to
+  }
+
+  /**
+   * Merge an Array of Objects into a single Object.
+   */
+  function toObject (arr) {
+    var res = {};
+    for (var i = 0; i < arr.length; i++) {
+      if (arr[i]) {
+        extend(res, arr[i]);
+      }
+    }
+    return res
+  }
+
+  /* eslint-disable no-unused-vars */
+
+  /**
+   * Perform no operation.
+   * Stubbing args to make Flow happy without leaving useless transpiled code
+   * with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/).
+   */
+  function noop (a, b, c) {}
+
+  /**
+   * Always return false.
+   */
+  var no = function (a, b, c) { return false; };
+
+  /* eslint-enable no-unused-vars */
+
+  /**
+   * Return the same value.
+   */
+  var identity = function (_) { return _; };
+
+  /**
+   * Generate a string containing static keys from compiler modules.
+   */
+  function genStaticKeys (modules) {
+    return modules.reduce(function (keys, m) {
+      return keys.concat(m.staticKeys || [])
+    }, []).join(',')
+  }
+
+  /**
+   * Check if two values are loosely equal - that is,
+   * if they are plain objects, do they have the same shape?
+   */
+  function looseEqual (a, b) {
+    if (a === b) { return true }
+    var isObjectA = isObject(a);
+    var isObjectB = isObject(b);
+    if (isObjectA && isObjectB) {
+      try {
+        var isArrayA = Array.isArray(a);
+        var isArrayB = Array.isArray(b);
+        if (isArrayA && isArrayB) {
+          return a.length === b.length && a.every(function (e, i) {
+            return looseEqual(e, b[i])
+          })
+        } else if (a instanceof Date && b instanceof Date) {
+          return a.getTime() === b.getTime()
+        } else if (!isArrayA && !isArrayB) {
+          var keysA = Object.keys(a);
+          var keysB = Object.keys(b);
+          return keysA.length === keysB.length && keysA.every(function (key) {
+            return looseEqual(a[key], b[key])
+          })
+        } else {
+          /* istanbul ignore next */
+          return false
+        }
+      } catch (e) {
+        /* istanbul ignore next */
+        return false
+      }
+    } else if (!isObjectA && !isObjectB) {
+      return String(a) === String(b)
+    } else {
+      return false
+    }
+  }
+
+  /**
+   * Return the first index at which a loosely equal value can be
+   * found in the array (if value is a plain object, the array must
+   * contain an object of the same shape), or -1 if it is not present.
+   */
+  function looseIndexOf (arr, val) {
+    for (var i = 0; i < arr.length; i++) {
+      if (looseEqual(arr[i], val)) { return i }
+    }
+    return -1
+  }
+
+  /**
+   * Ensure a function is called only once.
+   */
+  function once (fn) {
+    var called = false;
+    return function () {
+      if (!called) {
+        called = true;
+        fn.apply(this, arguments);
+      }
+    }
+  }
+
+  var SSR_ATTR = 'data-server-rendered';
+
+  var ASSET_TYPES = [
+    'component',
+    'directive',
+    'filter'
+  ];
+
+  var LIFECYCLE_HOOKS = [
+    'beforeCreate',
+    'created',
+    'beforeMount',
+    'mounted',
+    'beforeUpdate',
+    'updated',
+    'beforeDestroy',
+    'destroyed',
+    'activated',
+    'deactivated',
+    'errorCaptured',
+    'serverPrefetch'
+  ];
+
+  /*  */
+
+
+
+  var config = ({
+    /**
+     * Option merge strategies (used in core/util/options)
+     */
+    // $flow-disable-line
+    optionMergeStrategies: Object.create(null),
+
+    /**
+     * Whether to suppress warnings.
+     */
+    silent: false,
+
+    /**
+     * Show production mode tip message on boot?
+     */
+    productionTip: "development" !== 'production',
+
+    /**
+     * Whether to enable devtools
+     */
+    devtools: "development" !== 'production',
+
+    /**
+     * Whether to record perf
+     */
+    performance: false,
+
+    /**
+     * Error handler for watcher errors
+     */
+    errorHandler: null,
+
+    /**
+     * Warn handler for watcher warns
+     */
+    warnHandler: null,
+
+    /**
+     * Ignore certain custom elements
+     */
+    ignoredElements: [],
+
+    /**
+     * Custom user key aliases for v-on
+     */
+    // $flow-disable-line
+    keyCodes: Object.create(null),
+
+    /**
+     * Check if a tag is reserved so that it cannot be registered as a
+     * component. This is platform-dependent and may be overwritten.
+     */
+    isReservedTag: no,
+
+    /**
+     * Check if an attribute is reserved so that it cannot be used as a component
+     * prop. This is platform-dependent and may be overwritten.
+     */
+    isReservedAttr: no,
+
+    /**
+     * Check if a tag is an unknown element.
+     * Platform-dependent.
+     */
+    isUnknownElement: no,
+
+    /**
+     * Get the namespace of an element
+     */
+    getTagNamespace: noop,
+
+    /**
+     * Parse the real tag name for the specific platform.
+     */
+    parsePlatformTagName: identity,
+
+    /**
+     * Check if an attribute must be bound using property, e.g. value
+     * Platform-dependent.
+     */
+    mustUseProp: no,
+
+    /**
+     * Perform updates asynchronously. Intended to be used by Vue Test Utils
+     * This will significantly reduce performance if set to false.
+     */
+    async: true,
+
+    /**
+     * Exposed for legacy reasons
+     */
+    _lifecycleHooks: LIFECYCLE_HOOKS
+  });
+
+  /*  */
+
+  /**
+   * unicode letters used for parsing html tags, component names and property paths.
+   * using https://www.w3.org/TR/html53/semantics-scripting.html#potentialcustomelementname
+   * skipping \u10000-\uEFFFF due to it freezing up PhantomJS
+   */
+  var unicodeRegExp = /a-zA-Z\u00B7\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u037D\u037F-\u1FFF\u200C-\u200D\u203F-\u2040\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD/;
+
+  /**
+   * Check if a string starts with $ or _
+   */
+  function isReserved (str) {
+    var c = (str + '').charCodeAt(0);
+    return c === 0x24 || c === 0x5F
+  }
+
+  /**
+   * Define a property.
+   */
+  function def (obj, key, val, enumerable) {
+    Object.defineProperty(obj, key, {
+      value: val,
+      enumerable: !!enumerable,
+      writable: true,
+      configurable: true
+    });
+  }
+
+  /**
+   * Parse simple path.
+   */
+  var bailRE = new RegExp(("[^" + (unicodeRegExp.source) + ".$_\\d]"));
+  function parsePath (path) {
+    if (bailRE.test(path)) {
+      return
+    }
+    var segments = path.split('.');
+    return function (obj) {
+      for (var i = 0; i < segments.length; i++) {
+        if (!obj) { return }
+        obj = obj[segments[i]];
+      }
+      return obj
+    }
+  }
+
+  /*  */
+
+  // can we use __proto__?
+  var hasProto = '__proto__' in {};
+
+  // Browser environment sniffing
+  var inBrowser = typeof window !== 'undefined';
+  var inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform;
+  var weexPlatform = inWeex && WXEnvironment.platform.toLowerCase();
+  var UA = inBrowser && window.navigator.userAgent.toLowerCase();
+  var isIE = UA && /msie|trident/.test(UA);
+  var isIE9 = UA && UA.indexOf('msie 9.0') > 0;
+  var isEdge = UA && UA.indexOf('edge/') > 0;
+  var isAndroid = (UA && UA.indexOf('android') > 0) || (weexPlatform === 'android');
+  var isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || (weexPlatform === 'ios');
+  var isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge;
+  var isPhantomJS = UA && /phantomjs/.test(UA);
+  var isFF = UA && UA.match(/firefox\/(\d+)/);
+
+  // Firefox has a "watch" function on Object.prototype...
+  var nativeWatch = ({}).watch;
+
+  var supportsPassive = false;
+  if (inBrowser) {
+    try {
+      var opts = {};
+      Object.defineProperty(opts, 'passive', ({
+        get: function get () {
+          /* istanbul ignore next */
+          supportsPassive = true;
+        }
+      })); // https://github.com/facebook/flow/issues/285
+      window.addEventListener('test-passive', null, opts);
+    } catch (e) {}
+  }
+
+  // this needs to be lazy-evaled because vue may be required before
+  // vue-server-renderer can set VUE_ENV
+  var _isServer;
+  var isServerRendering = function () {
+    if (_isServer === undefined) {
+      /* istanbul ignore if */
+      if (!inBrowser && !inWeex && typeof global !== 'undefined') {
+        // detect presence of vue-server-renderer and avoid
+        // Webpack shimming the process
+        _isServer = global['process'] && global['process'].env.VUE_ENV === 'server';
+      } else {
+        _isServer = false;
+      }
+    }
+    return _isServer
+  };
+
+  // detect devtools
+  var devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__;
+
+  /* istanbul ignore next */
+  function isNative (Ctor) {
+    return typeof Ctor === 'function' && /native code/.test(Ctor.toString())
+  }
+
+  var hasSymbol =
+    typeof Symbol !== 'undefined' && isNative(Symbol) &&
+    typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys);
+
+  var _Set;
+  /* istanbul ignore if */ // $flow-disable-line
+  if (typeof Set !== 'undefined' && isNative(Set)) {
+    // use native Set when available.
+    _Set = Set;
+  } else {
+    // a non-standard Set polyfill that only works with primitive keys.
+    _Set = /*@__PURE__*/(function () {
+      function Set () {
+        this.set = Object.create(null);
+      }
+      Set.prototype.has = function has (key) {
+        return this.set[key] === true
+      };
+      Set.prototype.add = function add (key) {
+        this.set[key] = true;
+      };
+      Set.prototype.clear = function clear () {
+        this.set = Object.create(null);
+      };
+
+      return Set;
+    }());
+  }
+
+  /*  */
+
+  var warn = noop;
+  var tip = noop;
+  var generateComponentTrace = (noop); // work around flow check
+  var formatComponentName = (noop);
+
+  {
+    var hasConsole = typeof console !== 'undefined';
+    var classifyRE = /(?:^|[-_])(\w)/g;
+    var classify = function (str) { return str
+      .replace(classifyRE, function (c) { return c.toUpperCase(); })
+      .replace(/[-_]/g, ''); };
+
+    warn = function (msg, vm) {
+      var trace = vm ? generateComponentTrace(vm) : '';
+
+      if (config.warnHandler) {
+        config.warnHandler.call(null, msg, vm, trace);
+      } else if (hasConsole && (!config.silent)) {
+        console.error(("[Vue warn]: " + msg + trace));
+      }
+    };
+
+    tip = function (msg, vm) {
+      if (hasConsole && (!config.silent)) {
+        console.warn("[Vue tip]: " + msg + (
+          vm ? generateComponentTrace(vm) : ''
+        ));
+      }
+    };
+
+    formatComponentName = function (vm, includeFile) {
+      if (vm.$root === vm) {
+        return '<Root>'
+      }
+      var options = typeof vm === 'function' && vm.cid != null
+        ? vm.options
+        : vm._isVue
+          ? vm.$options || vm.constructor.options
+          : vm;
+      var name = options.name || options._componentTag;
+      var file = options.__file;
+      if (!name && file) {
+        var match = file.match(/([^/\\]+)\.vue$/);
+        name = match && match[1];
+      }
+
+      return (
+        (name ? ("<" + (classify(name)) + ">") : "<Anonymous>") +
+        (file && includeFile !== false ? (" at " + file) : '')
+      )
+    };
+
+    var repeat = function (str, n) {
+      var res = '';
+      while (n) {
+        if (n % 2 === 1) { res += str; }
+        if (n > 1) { str += str; }
+        n >>= 1;
+      }
+      return res
+    };
+
+    generateComponentTrace = function (vm) {
+      if (vm._isVue && vm.$parent) {
+        var tree = [];
+        var currentRecursiveSequence = 0;
+        while (vm) {
+          if (tree.length > 0) {
+            var last = tree[tree.length - 1];
+            if (last.constructor === vm.constructor) {
+              currentRecursiveSequence++;
+              vm = vm.$parent;
+              continue
+            } else if (currentRecursiveSequence > 0) {
+              tree[tree.length - 1] = [last, currentRecursiveSequence];
+              currentRecursiveSequence = 0;
+            }
+          }
+          tree.push(vm);
+          vm = vm.$parent;
+        }
+        return '\n\nfound in\n\n' + tree
+          .map(function (vm, i) { return ("" + (i === 0 ? '---> ' : repeat(' ', 5 + i * 2)) + (Array.isArray(vm)
+              ? ((formatComponentName(vm[0])) + "... (" + (vm[1]) + " recursive calls)")
+              : formatComponentName(vm))); })
+          .join('\n')
+      } else {
+        return ("\n\n(found in " + (formatComponentName(vm)) + ")")
+      }
+    };
+  }
+
+  /*  */
+
+  var uid = 0;
+
+  /**
+   * A dep is an observable that can have multiple
+   * directives subscribing to it.
+   */
+  var Dep = function Dep () {
+    this.id = uid++;
+    this.subs = [];
+  };
+
+  Dep.prototype.addSub = function addSub (sub) {
+    this.subs.push(sub);
+  };
+
+  Dep.prototype.removeSub = function removeSub (sub) {
+    remove(this.subs, sub);
+  };
+
+  Dep.prototype.depend = function depend () {
+    if (Dep.target) {
+      Dep.target.addDep(this);
+    }
+  };
+
+  Dep.prototype.notify = function notify () {
+    // stabilize the subscriber list first
+    var subs = this.subs.slice();
+    if (!config.async) {
+      // subs aren't sorted in scheduler if not running async
+      // we need to sort them now to make sure they fire in correct
+      // order
+      subs.sort(function (a, b) { return a.id - b.id; });
+    }
+    for (var i = 0, l = subs.length; i < l; i++) {
+      subs[i].update();
+    }
+  };
+
+  // The current target watcher being evaluated.
+  // This is globally unique because only one watcher
+  // can be evaluated at a time.
+  Dep.target = null;
+  var targetStack = [];
+
+  function pushTarget (target) {
+    targetStack.push(target);
+    Dep.target = target;
+  }
+
+  function popTarget () {
+    targetStack.pop();
+    Dep.target = targetStack[targetStack.length - 1];
+  }
+
+  /*  */
+
+  var VNode = function VNode (
+    tag,
+    data,
+    children,
+    text,
+    elm,
+    context,
+    componentOptions,
+    asyncFactory
+  ) {
+    this.tag = tag;
+    this.data = data;
+    this.children = children;
+    this.text = text;
+    this.elm = elm;
+    this.ns = undefined;
+    this.context = context;
+    this.fnContext = undefined;
+    this.fnOptions = undefined;
+    this.fnScopeId = undefined;
+    this.key = data && data.key;
+    this.componentOptions = componentOptions;
+    this.componentInstance = undefined;
+    this.parent = undefined;
+    this.raw = false;
+    this.isStatic = false;
+    this.isRootInsert = true;
+    this.isComment = false;
+    this.isCloned = false;
+    this.isOnce = false;
+    this.asyncFactory = asyncFactory;
+    this.asyncMeta = undefined;
+    this.isAsyncPlaceholder = false;
+  };
+
+  var prototypeAccessors = { child: { configurable: true } };
+
+  // DEPRECATED: alias for componentInstance for backwards compat.
+  /* istanbul ignore next */
+  prototypeAccessors.child.get = function () {
+    return this.componentInstance
+  };
+
+  Object.defineProperties( VNode.prototype, prototypeAccessors );
+
+  var createEmptyVNode = function (text) {
+    if ( text === void 0 ) text = '';
+
+    var node = new VNode();
+    node.text = text;
+    node.isComment = true;
+    return node
+  };
+
+  function createTextVNode (val) {
+    return new VNode(undefined, undefined, undefined, String(val))
+  }
+
+  // optimized shallow clone
+  // used for static nodes and slot nodes because they may be reused across
+  // multiple renders, cloning them avoids errors when DOM manipulations rely
+  // on their elm reference.
+  function cloneVNode (vnode) {
+    var cloned = new VNode(
+      vnode.tag,
+      vnode.data,
+      // #7975
+      // clone children array to avoid mutating original in case of cloning
+      // a child.
+      vnode.children && vnode.children.slice(),
+      vnode.text,
+      vnode.elm,
+      vnode.context,
+      vnode.componentOptions,
+      vnode.asyncFactory
+    );
+    cloned.ns = vnode.ns;
+    cloned.isStatic = vnode.isStatic;
+    cloned.key = vnode.key;
+    cloned.isComment = vnode.isComment;
+    cloned.fnContext = vnode.fnContext;
+    cloned.fnOptions = vnode.fnOptions;
+    cloned.fnScopeId = vnode.fnScopeId;
+    cloned.asyncMeta = vnode.asyncMeta;
+    cloned.isCloned = true;
+    return cloned
+  }
+
+  /*
+   * not type checking this file because flow doesn't play well with
+   * dynamically accessing methods on Array prototype
+   */
+
+  var arrayProto = Array.prototype;
+  var arrayMethods = Object.create(arrayProto);
+
+  var methodsToPatch = [
+    'push',
+    'pop',
+    'shift',
+    'unshift',
+    'splice',
+    'sort',
+    'reverse'
+  ];
+
+  /**
+   * Intercept mutating methods and emit events
+   */
+  methodsToPatch.forEach(function (method) {
+    // cache original method
+    var original = arrayProto[method];
+    def(arrayMethods, method, function mutator () {
+      var args = [], len = arguments.length;
+      while ( len-- ) args[ len ] = arguments[ len ];
+
+      var result = original.apply(this, args);
+      var ob = this.__ob__;
+      var inserted;
+      switch (method) {
+        case 'push':
+        case 'unshift':
+          inserted = args;
+          break
+        case 'splice':
+          inserted = args.slice(2);
+          break
+      }
+      if (inserted) { ob.observeArray(inserted); }
+      // notify change
+      ob.dep.notify();
+      return result
+    });
+  });
+
+  /*  */
+
+  var arrayKeys = Object.getOwnPropertyNames(arrayMethods);
+
+  /**
+   * In some cases we may want to disable observation inside a component's
+   * update computation.
+   */
+  var shouldObserve = true;
+
+  function toggleObserving (value) {
+    shouldObserve = value;
+  }
+
+  /**
+   * Observer class that is attached to each observed
+   * object. Once attached, the observer converts the target
+   * object's property keys into getter/setters that
+   * collect dependencies and dispatch updates.
+   */
+  var Observer = function Observer (value) {
+    this.value = value;
+    this.dep = new Dep();
+    this.vmCount = 0;
+    def(value, '__ob__', this);
+    if (Array.isArray(value)) {
+      if (hasProto) {
+        protoAugment(value, arrayMethods);
+      } else {
+        copyAugment(value, arrayMethods, arrayKeys);
+      }
+      this.observeArray(value);
+    } else {
+      this.walk(value);
+    }
+  };
+
+  /**
+   * Walk through all properties and convert them into
+   * getter/setters. This method should only be called when
+   * value type is Object.
+   */
+  Observer.prototype.walk = function walk (obj) {
+    var keys = Object.keys(obj);
+    for (var i = 0; i < keys.length; i++) {
+      defineReactive$$1(obj, keys[i]);
+    }
+  };
+
+  /**
+   * Observe a list of Array items.
+   */
+  Observer.prototype.observeArray = function observeArray (items) {
+    for (var i = 0, l = items.length; i < l; i++) {
+      observe(items[i]);
+    }
+  };
+
+  // helpers
+
+  /**
+   * Augment a target Object or Array by intercepting
+   * the prototype chain using __proto__
+   */
+  function protoAugment (target, src) {
+    /* eslint-disable no-proto */
+    target.__proto__ = src;
+    /* eslint-enable no-proto */
+  }
+
+  /**
+   * Augment a target Object or Array by defining
+   * hidden properties.
+   */
+  /* istanbul ignore next */
+  function copyAugment (target, src, keys) {
+    for (var i = 0, l = keys.length; i < l; i++) {
+      var key = keys[i];
+      def(target, key, src[key]);
+    }
+  }
+
+  /**
+   * Attempt to create an observer instance for a value,
+   * returns the new observer if successfully observed,
+   * or the existing observer if the value already has one.
+   */
+  function observe (value, asRootData) {
+    if (!isObject(value) || value instanceof VNode) {
+      return
+    }
+    var ob;
+    if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {
+      ob = value.__ob__;
+    } else if (
+      shouldObserve &&
+      !isServerRendering() &&
+      (Array.isArray(value) || isPlainObject(value)) &&
+      Object.isExtensible(value) &&
+      !value._isVue
+    ) {
+      ob = new Observer(value);
+    }
+    if (asRootData && ob) {
+      ob.vmCount++;
+    }
+    return ob
+  }
+
+  /**
+   * Define a reactive property on an Object.
+   */
+  function defineReactive$$1 (
+    obj,
+    key,
+    val,
+    customSetter,
+    shallow
+  ) {
+    var dep = new Dep();
+
+    var property = Object.getOwnPropertyDescriptor(obj, key);
+    if (property && property.configurable === false) {
+      return
+    }
+
+    // cater for pre-defined getter/setters
+    var getter = property && property.get;
+    var setter = property && property.set;
+    if ((!getter || setter) && arguments.length === 2) {
+      val = obj[key];
+    }
+
+    var childOb = !shallow && observe(val);
+    Object.defineProperty(obj, key, {
+      enumerable: true,
+      configurable: true,
+      get: function reactiveGetter () {
+        var value = getter ? getter.call(obj) : val;
+        if (Dep.target) {
+          dep.depend();
+          if (childOb) {
+            childOb.dep.depend();
+            if (Array.isArray(value)) {
+              dependArray(value);
+            }
+          }
+        }
+        return value
+      },
+      set: function reactiveSetter (newVal) {
+        var value = getter ? getter.call(obj) : val;
+        /* eslint-disable no-self-compare */
+        if (newVal === value || (newVal !== newVal && value !== value)) {
+          return
+        }
+        /* eslint-enable no-self-compare */
+        if (customSetter) {
+          customSetter();
+        }
+        // #7981: for accessor properties without setter
+        if (getter && !setter) { return }
+        if (setter) {
+          setter.call(obj, newVal);
+        } else {
+          val = newVal;
+        }
+        childOb = !shallow && observe(newVal);
+        dep.notify();
+      }
+    });
+  }
+
+  /**
+   * Set a property on an object. Adds the new property and
+   * triggers change notification if the property doesn't
+   * already exist.
+   */
+  function set (target, key, val) {
+    if (isUndef(target) || isPrimitive(target)
+    ) {
+      warn(("Cannot set reactive property on undefined, null, or primitive value: " + ((target))));
+    }
+    if (Array.isArray(target) && isValidArrayIndex(key)) {
+      target.length = Math.max(target.length, key);
+      target.splice(key, 1, val);
+      return val
+    }
+    if (key in target && !(key in Object.prototype)) {
+      target[key] = val;
+      return val
+    }
+    var ob = (target).__ob__;
+    if (target._isVue || (ob && ob.vmCount)) {
+      warn(
+        'Avoid adding reactive properties to a Vue instance or its root $data ' +
+        'at runtime - declare it upfront in the data option.'
+      );
+      return val
+    }
+    if (!ob) {
+      target[key] = val;
+      return val
+    }
+    defineReactive$$1(ob.value, key, val);
+    ob.dep.notify();
+    return val
+  }
+
+  /**
+   * Delete a property and trigger change if necessary.
+   */
+  function del (target, key) {
+    if (isUndef(target) || isPrimitive(target)
+    ) {
+      warn(("Cannot delete reactive property on undefined, null, or primitive value: " + ((target))));
+    }
+    if (Array.isArray(target) && isValidArrayIndex(key)) {
+      target.splice(key, 1);
+      return
+    }
+    var ob = (target).__ob__;
+    if (target._isVue || (ob && ob.vmCount)) {
+      warn(
+        'Avoid deleting properties on a Vue instance or its root $data ' +
+        '- just set it to null.'
+      );
+      return
+    }
+    if (!hasOwn(target, key)) {
+      return
+    }
+    delete target[key];
+    if (!ob) {
+      return
+    }
+    ob.dep.notify();
+  }
+
+  /**
+   * Collect dependencies on array elements when the array is touched, since
+   * we cannot intercept array element access like property getters.
+   */
+  function dependArray (value) {
+    for (var e = (void 0), i = 0, l = value.length; i < l; i++) {
+      e = value[i];
+      e && e.__ob__ && e.__ob__.dep.depend();
+      if (Array.isArray(e)) {
+        dependArray(e);
+      }
+    }
+  }
+
+  /*  */
+
+  /**
+   * Option overwriting strategies are functions that handle
+   * how to merge a parent option value and a child option
+   * value into the final value.
+   */
+  var strats = config.optionMergeStrategies;
+
+  /**
+   * Options with restrictions
+   */
+  {
+    strats.el = strats.propsData = function (parent, child, vm, key) {
+      if (!vm) {
+        warn(
+          "option \"" + key + "\" can only be used during instance " +
+          'creation with the `new` keyword.'
+        );
+      }
+      return defaultStrat(parent, child)
+    };
+  }
+
+  /**
+   * Helper that recursively merges two data objects together.
+   */
+  function mergeData (to, from) {
+    if (!from) { return to }
+    var key, toVal, fromVal;
+
+    var keys = hasSymbol
+      ? Reflect.ownKeys(from)
+      : Object.keys(from);
+
+    for (var i = 0; i < keys.length; i++) {
+      key = keys[i];
+      // in case the object is already observed...
+      if (key === '__ob__') { continue }
+      toVal = to[key];
+      fromVal = from[key];
+      if (!hasOwn(to, key)) {
+        set(to, key, fromVal);
+      } else if (
+        toVal !== fromVal &&
+        isPlainObject(toVal) &&
+        isPlainObject(fromVal)
+      ) {
+        mergeData(toVal, fromVal);
+      }
+    }
+    return to
+  }
+
+  /**
+   * Data
+   */
+  function mergeDataOrFn (
+    parentVal,
+    childVal,
+    vm
+  ) {
+    if (!vm) {
+      // in a Vue.extend merge, both should be functions
+      if (!childVal) {
+        return parentVal
+      }
+      if (!parentVal) {
+        return childVal
+      }
+      // when parentVal & childVal are both present,
+      // we need to return a function that returns the
+      // merged result of both functions... no need to
+      // check if parentVal is a function here because
+      // it has to be a function to pass previous merges.
+      return function mergedDataFn () {
+        return mergeData(
+          typeof childVal === 'function' ? childVal.call(this, this) : childVal,
+          typeof parentVal === 'function' ? parentVal.call(this, this) : parentVal
+        )
+      }
+    } else {
+      return function mergedInstanceDataFn () {
+        // instance merge
+        var instanceData = typeof childVal === 'function'
+          ? childVal.call(vm, vm)
+          : childVal;
+        var defaultData = typeof parentVal === 'function'
+          ? parentVal.call(vm, vm)
+          : parentVal;
+        if (instanceData) {
+          return mergeData(instanceData, defaultData)
+        } else {
+          return defaultData
+        }
+      }
+    }
+  }
+
+  strats.data = function (
+    parentVal,
+    childVal,
+    vm
+  ) {
+    if (!vm) {
+      if (childVal && typeof childVal !== 'function') {
+        warn(
+          'The "data" option should be a function ' +
+          'that returns a per-instance value in component ' +
+          'definitions.',
+          vm
+        );
+
+        return parentVal
+      }
+      return mergeDataOrFn(parentVal, childVal)
+    }
+
+    return mergeDataOrFn(parentVal, childVal, vm)
+  };
+
+  /**
+   * Hooks and props are merged as arrays.
+   */
+  function mergeHook (
+    parentVal,
+    childVal
+  ) {
+    var res = childVal
+      ? parentVal
+        ? parentVal.concat(childVal)
+        : Array.isArray(childVal)
+          ? childVal
+          : [childVal]
+      : parentVal;
+    return res
+      ? dedupeHooks(res)
+      : res
+  }
+
+  function dedupeHooks (hooks) {
+    var res = [];
+    for (var i = 0; i < hooks.length; i++) {
+      if (res.indexOf(hooks[i]) === -1) {
+        res.push(hooks[i]);
+      }
+    }
+    return res
+  }
+
+  LIFECYCLE_HOOKS.forEach(function (hook) {
+    strats[hook] = mergeHook;
+  });
+
+  /**
+   * Assets
+   *
+   * When a vm is present (instance creation), we need to do
+   * a three-way merge between constructor options, instance
+   * options and parent options.
+   */
+  function mergeAssets (
+    parentVal,
+    childVal,
+    vm,
+    key
+  ) {
+    var res = Object.create(parentVal || null);
+    if (childVal) {
+      assertObjectType(key, childVal, vm);
+      return extend(res, childVal)
+    } else {
+      return res
+    }
+  }
+
+  ASSET_TYPES.forEach(function (type) {
+    strats[type + 's'] = mergeAssets;
+  });
+
+  /**
+   * Watchers.
+   *
+   * Watchers hashes should not overwrite one
+   * another, so we merge them as arrays.
+   */
+  strats.watch = function (
+    parentVal,
+    childVal,
+    vm,
+    key
+  ) {
+    // work around Firefox's Object.prototype.watch...
+    if (parentVal === nativeWatch) { parentVal = undefined; }
+    if (childVal === nativeWatch) { childVal = undefined; }
+    /* istanbul ignore if */
+    if (!childVal) { return Object.create(parentVal || null) }
+    {
+      assertObjectType(key, childVal, vm);
+    }
+    if (!parentVal) { return childVal }
+    var ret = {};
+    extend(ret, parentVal);
+    for (var key$1 in childVal) {
+      var parent = ret[key$1];
+      var child = childVal[key$1];
+      if (parent && !Array.isArray(parent)) {
+        parent = [parent];
+      }
+      ret[key$1] = parent
+        ? parent.concat(child)
+        : Array.isArray(child) ? child : [child];
+    }
+    return ret
+  };
+
+  /**
+   * Other object hashes.
+   */
+  strats.props =
+  strats.methods =
+  strats.inject =
+  strats.computed = function (
+    parentVal,
+    childVal,
+    vm,
+    key
+  ) {
+    if (childVal && "development" !== 'production') {
+      assertObjectType(key, childVal, vm);
+    }
+    if (!parentVal) { return childVal }
+    var ret = Object.create(null);
+    extend(ret, parentVal);
+    if (childVal) { extend(ret, childVal); }
+    return ret
+  };
+  strats.provide = mergeDataOrFn;
+
+  /**
+   * Default strategy.
+   */
+  var defaultStrat = function (parentVal, childVal) {
+    return childVal === undefined
+      ? parentVal
+      : childVal
+  };
+
+  /**
+   * Validate component names
+   */
+  function checkComponents (options) {
+    for (var key in options.components) {
+      validateComponentName(key);
+    }
+  }
+
+  function validateComponentName (name) {
+    if (!new RegExp(("^[a-zA-Z][\\-\\.0-9_" + (unicodeRegExp.source) + "]*$")).test(name)) {
+      warn(
+        'Invalid component name: "' + name + '". Component names ' +
+        'should conform to valid custom element name in html5 specification.'
+      );
+    }
+    if (isBuiltInTag(name) || config.isReservedTag(name)) {
+      warn(
+        'Do not use built-in or reserved HTML elements as component ' +
+        'id: ' + name
+      );
+    }
+  }
+
+  /**
+   * Ensure all props option syntax are normalized into the
+   * Object-based format.
+   */
+  function normalizeProps (options, vm) {
+    var props = options.props;
+    if (!props) { return }
+    var res = {};
+    var i, val, name;
+    if (Array.isArray(props)) {
+      i = props.length;
+      while (i--) {
+        val = props[i];
+        if (typeof val === 'string') {
+          name = camelize(val);
+          res[name] = { type: null };
+        } else {
+          warn('props must be strings when using array syntax.');
+        }
+      }
+    } else if (isPlainObject(props)) {
+      for (var key in props) {
+        val = props[key];
+        name = camelize(key);
+        res[name] = isPlainObject(val)
+          ? val
+          : { type: val };
+      }
+    } else {
+      warn(
+        "Invalid value for option \"props\": expected an Array or an Object, " +
+        "but got " + (toRawType(props)) + ".",
+        vm
+      );
+    }
+    options.props = res;
+  }
+
+  /**
+   * Normalize all injections into Object-based format
+   */
+  function normalizeInject (options, vm) {
+    var inject = options.inject;
+    if (!inject) { return }
+    var normalized = options.inject = {};
+    if (Array.isArray(inject)) {
+      for (var i = 0; i < inject.length; i++) {
+        normalized[inject[i]] = { from: inject[i] };
+      }
+    } else if (isPlainObject(inject)) {
+      for (var key in inject) {
+        var val = inject[key];
+        normalized[key] = isPlainObject(val)
+          ? extend({ from: key }, val)
+          : { from: val };
+      }
+    } else {
+      warn(
+        "Invalid value for option \"inject\": expected an Array or an Object, " +
+        "but got " + (toRawType(inject)) + ".",
+        vm
+      );
+    }
+  }
+
+  /**
+   * Normalize raw function directives into object format.
+   */
+  function normalizeDirectives (options) {
+    var dirs = options.directives;
+    if (dirs) {
+      for (var key in dirs) {
+        var def$$1 = dirs[key];
+        if (typeof def$$1 === 'function') {
+          dirs[key] = { bind: def$$1, update: def$$1 };
+        }
+      }
+    }
+  }
+
+  function assertObjectType (name, value, vm) {
+    if (!isPlainObject(value)) {
+      warn(
+        "Invalid value for option \"" + name + "\": expected an Object, " +
+        "but got " + (toRawType(value)) + ".",
+        vm
+      );
+    }
+  }
+
+  /**
+   * Merge two option objects into a new one.
+   * Core utility used in both instantiation and inheritance.
+   */
+  function mergeOptions (
+    parent,
+    child,
+    vm
+  ) {
+    {
+      checkComponents(child);
+    }
+
+    if (typeof child === 'function') {
+      child = child.options;
+    }
+
+    normalizeProps(child, vm);
+    normalizeInject(child, vm);
+    normalizeDirectives(child);
+
+    // Apply extends and mixins on the child options,
+    // but only if it is a raw options object that isn't
+    // the result of another mergeOptions call.
+    // Only merged options has the _base property.
+    if (!child._base) {
+      if (child.extends) {
+        parent = mergeOptions(parent, child.extends, vm);
+      }
+      if (child.mixins) {
+        for (var i = 0, l = child.mixins.length; i < l; i++) {
+          parent = mergeOptions(parent, child.mixins[i], vm);
+        }
+      }
+    }
+
+    var options = {};
+    var key;
+    for (key in parent) {
+      mergeField(key);
+    }
+    for (key in child) {
+      if (!hasOwn(parent, key)) {
+        mergeField(key);
+      }
+    }
+    function mergeField (key) {
+      var strat = strats[key] || defaultStrat;
+      options[key] = strat(parent[key], child[key], vm, key);
+    }
+    return options
+  }
+
+  /**
+   * Resolve an asset.
+   * This function is used because child instances need access
+   * to assets defined in its ancestor chain.
+   */
+  function resolveAsset (
+    options,
+    type,
+    id,
+    warnMissing
+  ) {
+    /* istanbul ignore if */
+    if (typeof id !== 'string') {
+      return
+    }
+    var assets = options[type];
+    // check local registration variations first
+    if (hasOwn(assets, id)) { return assets[id] }
+    var camelizedId = camelize(id);
+    if (hasOwn(assets, camelizedId)) { return assets[camelizedId] }
+    var PascalCaseId = capitalize(camelizedId);
+    if (hasOwn(assets, PascalCaseId)) { return assets[PascalCaseId] }
+    // fallback to prototype chain
+    var res = assets[id] || assets[camelizedId] || assets[PascalCaseId];
+    if (warnMissing && !res) {
+      warn(
+        'Failed to resolve ' + type.slice(0, -1) + ': ' + id,
+        options
+      );
+    }
+    return res
+  }
+
+  /*  */
+
+
+
+  function validateProp (
+    key,
+    propOptions,
+    propsData,
+    vm
+  ) {
+    var prop = propOptions[key];
+    var absent = !hasOwn(propsData, key);
+    var value = propsData[key];
+    // boolean casting
+    var booleanIndex = getTypeIndex(Boolean, prop.type);
+    if (booleanIndex > -1) {
+      if (absent && !hasOwn(prop, 'default')) {
+        value = false;
+      } else if (value === '' || value === hyphenate(key)) {
+        // only cast empty string / same name to boolean if
+        // boolean has higher priority
+        var stringIndex = getTypeIndex(String, prop.type);
+        if (stringIndex < 0 || booleanIndex < stringIndex) {
+          value = true;
+        }
+      }
+    }
+    // check default value
+    if (value === undefined) {
+      value = getPropDefaultValue(vm, prop, key);
+      // since the default value is a fresh copy,
+      // make sure to observe it.
+      var prevShouldObserve = shouldObserve;
+      toggleObserving(true);
+      observe(value);
+      toggleObserving(prevShouldObserve);
+    }
+    {
+      assertProp(prop, key, value, vm, absent);
+    }
+    return value
+  }
+
+  /**
+   * Get the default value of a prop.
+   */
+  function getPropDefaultValue (vm, prop, key) {
+    // no default, return undefined
+    if (!hasOwn(prop, 'default')) {
+      return undefined
+    }
+    var def = prop.default;
+    // warn against non-factory defaults for Object & Array
+    if (isObject(def)) {
+      warn(
+        'Invalid default value for prop "' + key + '": ' +
+        'Props with type Object/Array must use a factory function ' +
+        'to return the default value.',
+        vm
+      );
+    }
+    // the raw prop value was also undefined from previous render,
+    // return previous default value to avoid unnecessary watcher trigger
+    if (vm && vm.$options.propsData &&
+      vm.$options.propsData[key] === undefined &&
+      vm._props[key] !== undefined
+    ) {
+      return vm._props[key]
+    }
+    // call factory function for non-Function types
+    // a value is Function if its prototype is function even across different execution context
+    return typeof def === 'function' && getType(prop.type) !== 'Function'
+      ? def.call(vm)
+      : def
+  }
+
+  /**
+   * Assert whether a prop is valid.
+   */
+  function assertProp (
+    prop,
+    name,
+    value,
+    vm,
+    absent
+  ) {
+    if (prop.required && absent) {
+      warn(
+        'Missing required prop: "' + name + '"',
+        vm
+      );
+      return
+    }
+    if (value == null && !prop.required) {
+      return
+    }
+    var type = prop.type;
+    var valid = !type || type === true;
+    var expectedTypes = [];
+    if (type) {
+      if (!Array.isArray(type)) {
+        type = [type];
+      }
+      for (var i = 0; i < type.length && !valid; i++) {
+        var assertedType = assertType(value, type[i]);
+        expectedTypes.push(assertedType.expectedType || '');
+        valid = assertedType.valid;
+      }
+    }
+
+    if (!valid) {
+      warn(
+        getInvalidTypeMessage(name, value, expectedTypes),
+        vm
+      );
+      return
+    }
+    var validator = prop.validator;
+    if (validator) {
+      if (!validator(value)) {
+        warn(
+          'Invalid prop: custom validator check failed for prop "' + name + '".',
+          vm
+        );
+      }
+    }
+  }
+
+  var simpleCheckRE = /^(String|Number|Boolean|Function|Symbol)$/;
+
+  function assertType (value, type) {
+    var valid;
+    var expectedType = getType(type);
+    if (simpleCheckRE.test(expectedType)) {
+      var t = typeof value;
+      valid = t === expectedType.toLowerCase();
+      // for primitive wrapper objects
+      if (!valid && t === 'object') {
+        valid = value instanceof type;
+      }
+    } else if (expectedType === 'Object') {
+      valid = isPlainObject(value);
+    } else if (expectedType === 'Array') {
+      valid = Array.isArray(value);
+    } else {
+      valid = value instanceof type;
+    }
+    return {
+      valid: valid,
+      expectedType: expectedType
+    }
+  }
+
+  /**
+   * Use function string name to check built-in types,
+   * because a simple equality check will fail when running
+   * across different vms / iframes.
+   */
+  function getType (fn) {
+    var match = fn && fn.toString().match(/^\s*function (\w+)/);
+    return match ? match[1] : ''
+  }
+
+  function isSameType (a, b) {
+    return getType(a) === getType(b)
+  }
+
+  function getTypeIndex (type, expectedTypes) {
+    if (!Array.isArray(expectedTypes)) {
+      return isSameType(expectedTypes, type) ? 0 : -1
+    }
+    for (var i = 0, len = expectedTypes.length; i < len; i++) {
+      if (isSameType(expectedTypes[i], type)) {
+        return i
+      }
+    }
+    return -1
+  }
+
+  function getInvalidTypeMessage (name, value, expectedTypes) {
+    var message = "Invalid prop: type check failed for prop \"" + name + "\"." +
+      " Expected " + (expectedTypes.map(capitalize).join(', '));
+    var expectedType = expectedTypes[0];
+    var receivedType = toRawType(value);
+    var expectedValue = styleValue(value, expectedType);
+    var receivedValue = styleValue(value, receivedType);
+    // check if we need to specify expected value
+    if (expectedTypes.length === 1 &&
+        isExplicable(expectedType) &&
+        !isBoolean(expectedType, receivedType)) {
+      message += " with value " + expectedValue;
+    }
+    message += ", got " + receivedType + " ";
+    // check if we need to specify received value
+    if (isExplicable(receivedType)) {
+      message += "with value " + receivedValue + ".";
+    }
+    return message
+  }
+
+  function styleValue (value, type) {
+    if (type === 'String') {
+      return ("\"" + value + "\"")
+    } else if (type === 'Number') {
+      return ("" + (Number(value)))
+    } else {
+      return ("" + value)
+    }
+  }
+
+  function isExplicable (value) {
+    var explicitTypes = ['string', 'number', 'boolean'];
+    return explicitTypes.some(function (elem) { return value.toLowerCase() === elem; })
+  }
+
+  function isBoolean () {
+    var args = [], len = arguments.length;
+    while ( len-- ) args[ len ] = arguments[ len ];
+
+    return args.some(function (elem) { return elem.toLowerCase() === 'boolean'; })
+  }
+
+  /*  */
+
+  function handleError (err, vm, info) {
+    // Deactivate deps tracking while processing error handler to avoid possible infinite rendering.
+    // See: https://github.com/vuejs/vuex/issues/1505
+    pushTarget();
+    try {
+      if (vm) {
+        var cur = vm;
+        while ((cur = cur.$parent)) {
+          var hooks = cur.$options.errorCaptured;
+          if (hooks) {
+            for (var i = 0; i < hooks.length; i++) {
+              try {
+                var capture = hooks[i].call(cur, err, vm, info) === false;
+                if (capture) { return }
+              } catch (e) {
+                globalHandleError(e, cur, 'errorCaptured hook');
+              }
+            }
+          }
+        }
+      }
+      globalHandleError(err, vm, info);
+    } finally {
+      popTarget();
+    }
+  }
+
+  function invokeWithErrorHandling (
+    handler,
+    context,
+    args,
+    vm,
+    info
+  ) {
+    var res;
+    try {
+      res = args ? handler.apply(context, args) : handler.call(context);
+      if (res && !res._isVue && isPromise(res) && !res._handled) {
+        res.catch(function (e) { return handleError(e, vm, info + " (Promise/async)"); });
+        // issue #9511
+        // avoid catch triggering multiple times when nested calls
+        res._handled = true;
+      }
+    } catch (e) {
+      handleError(e, vm, info);
+    }
+    return res
+  }
+
+  function globalHandleError (err, vm, info) {
+    if (config.errorHandler) {
+      try {
+        return config.errorHandler.call(null, err, vm, info)
+      } catch (e) {
+        // if the user intentionally throws the original error in the handler,
+        // do not log it twice
+        if (e !== err) {
+          logError(e, null, 'config.errorHandler');
+        }
+      }
+    }
+    logError(err, vm, info);
+  }
+
+  function logError (err, vm, info) {
+    {
+      warn(("Error in " + info + ": \"" + (err.toString()) + "\""), vm);
+    }
+    /* istanbul ignore else */
+    if ((inBrowser || inWeex) && typeof console !== 'undefined') {
+      console.error(err);
+    } else {
+      throw err
+    }
+  }
+
+  /*  */
+
+  var isUsingMicroTask = false;
+
+  var callbacks = [];
+  var pending = false;
+
+  function flushCallbacks () {
+    pending = false;
+    var copies = callbacks.slice(0);
+    callbacks.length = 0;
+    for (var i = 0; i < copies.length; i++) {
+      copies[i]();
+    }
+  }
+
+  // Here we have async deferring wrappers using microtasks.
+  // In 2.5 we used (macro) tasks (in combination with microtasks).
+  // However, it has subtle problems when state is changed right before repaint
+  // (e.g. #6813, out-in transitions).
+  // Also, using (macro) tasks in event handler would cause some weird behaviors
+  // that cannot be circumvented (e.g. #7109, #7153, #7546, #7834, #8109).
+  // So we now use microtasks everywhere, again.
+  // A major drawback of this tradeoff is that there are some scenarios
+  // where microtasks have too high a priority and fire in between supposedly
+  // sequential events (e.g. #4521, #6690, which have workarounds)
+  // or even between bubbling of the same event (#6566).
+  var timerFunc;
+
+  // The nextTick behavior leverages the microtask queue, which can be accessed
+  // via either native Promise.then or MutationObserver.
+  // MutationObserver has wider support, however it is seriously bugged in
+  // UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It
+  // completely stops working after triggering a few times... so, if native
+  // Promise is available, we will use it:
+  /* istanbul ignore next, $flow-disable-line */
+  if (typeof Promise !== 'undefined' && isNative(Promise)) {
+    var p = Promise.resolve();
+    timerFunc = function () {
+      p.then(flushCallbacks);
+      // In problematic UIWebViews, Promise.then doesn't completely break, but
+      // it can get stuck in a weird state where callbacks are pushed into the
+      // microtask queue but the queue isn't being flushed, until the browser
+      // needs to do some other work, e.g. handle a timer. Therefore we can
+      // "force" the microtask queue to be flushed by adding an empty timer.
+      if (isIOS) { setTimeout(noop); }
+    };
+    isUsingMicroTask = true;
+  } else if (!isIE && typeof MutationObserver !== 'undefined' && (
+    isNative(MutationObserver) ||
+    // PhantomJS and iOS 7.x
+    MutationObserver.toString() === '[object MutationObserverConstructor]'
+  )) {
+    // Use MutationObserver where native Promise is not available,
+    // e.g. PhantomJS, iOS7, Android 4.4
+    // (#6466 MutationObserver is unreliable in IE11)
+    var counter = 1;
+    var observer = new MutationObserver(flushCallbacks);
+    var textNode = document.createTextNode(String(counter));
+    observer.observe(textNode, {
+      characterData: true
+    });
+    timerFunc = function () {
+      counter = (counter + 1) % 2;
+      textNode.data = String(counter);
+    };
+    isUsingMicroTask = true;
+  } else if (typeof setImmediate !== 'undefined' && isNative(setImmediate)) {
+    // Fallback to setImmediate.
+    // Technically it leverages the (macro) task queue,
+    // but it is still a better choice than setTimeout.
+    timerFunc = function () {
+      setImmediate(flushCallbacks);
+    };
+  } else {
+    // Fallback to setTimeout.
+    timerFunc = function () {
+      setTimeout(flushCallbacks, 0);
+    };
+  }
+
+  function nextTick (cb, ctx) {
+    var _resolve;
+    callbacks.push(function () {
+      if (cb) {
+        try {
+          cb.call(ctx);
+        } catch (e) {
+          handleError(e, ctx, 'nextTick');
+        }
+      } else if (_resolve) {
+        _resolve(ctx);
+      }
+    });
+    if (!pending) {
+      pending = true;
+      timerFunc();
+    }
+    // $flow-disable-line
+    if (!cb && typeof Promise !== 'undefined') {
+      return new Promise(function (resolve) {
+        _resolve = resolve;
+      })
+    }
+  }
+
+  /*  */
+
+  var mark;
+  var measure;
+
+  {
+    var perf = inBrowser && window.performance;
+    /* istanbul ignore if */
+    if (
+      perf &&
+      perf.mark &&
+      perf.measure &&
+      perf.clearMarks &&
+      perf.clearMeasures
+    ) {
+      mark = function (tag) { return perf.mark(tag); };
+      measure = function (name, startTag, endTag) {
+        perf.measure(name, startTag, endTag);
+        perf.clearMarks(startTag);
+        perf.clearMarks(endTag);
+        // perf.clearMeasures(name)
+      };
+    }
+  }
+
+  /* not type checking this file because flow doesn't play well with Proxy */
+
+  var initProxy;
+
+  {
+    var allowedGlobals = makeMap(
+      'Infinity,undefined,NaN,isFinite,isNaN,' +
+      'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' +
+      'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,' +
+      'require' // for Webpack/Browserify
+    );
+
+    var warnNonPresent = function (target, key) {
+      warn(
+        "Property or method \"" + key + "\" is not defined on the instance but " +
+        'referenced during render. Make sure that this property is reactive, ' +
+        'either in the data option, or for class-based components, by ' +
+        'initializing the property. ' +
+        'See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.',
+        target
+      );
+    };
+
+    var warnReservedPrefix = function (target, key) {
+      warn(
+        "Property \"" + key + "\" must be accessed with \"$data." + key + "\" because " +
+        'properties starting with "$" or "_" are not proxied in the Vue instance to ' +
+        'prevent conflicts with Vue internals. ' +
+        'See: https://vuejs.org/v2/api/#data',
+        target
+      );
+    };
+
+    var hasProxy =
+      typeof Proxy !== 'undefined' && isNative(Proxy);
+
+    if (hasProxy) {
+      var isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta,exact');
+      config.keyCodes = new Proxy(config.keyCodes, {
+        set: function set (target, key, value) {
+          if (isBuiltInModifier(key)) {
+            warn(("Avoid overwriting built-in modifier in config.keyCodes: ." + key));
+            return false
+          } else {
+            target[key] = value;
+            return true
+          }
+        }
+      });
+    }
+
+    var hasHandler = {
+      has: function has (target, key) {
+        var has = key in target;
+        var isAllowed = allowedGlobals(key) ||
+          (typeof key === 'string' && key.charAt(0) === '_' && !(key in target.$data));
+        if (!has && !isAllowed) {
+          if (key in target.$data) { warnReservedPrefix(target, key); }
+          else { warnNonPresent(target, key); }
+        }
+        return has || !isAllowed
+      }
+    };
+
+    var getHandler = {
+      get: function get (target, key) {
+        if (typeof key === 'string' && !(key in target)) {
+          if (key in target.$data) { warnReservedPrefix(target, key); }
+          else { warnNonPresent(target, key); }
+        }
+        return target[key]
+      }
+    };
+
+    initProxy = function initProxy (vm) {
+      if (hasProxy) {
+        // determine which proxy handler to use
+        var options = vm.$options;
+        var handlers = options.render && options.render._withStripped
+          ? getHandler
+          : hasHandler;
+        vm._renderProxy = new Proxy(vm, handlers);
+      } else {
+        vm._renderProxy = vm;
+      }
+    };
+  }
+
+  /*  */
+
+  var seenObjects = new _Set();
+
+  /**
+   * Recursively traverse an object to evoke all converted
+   * getters, so that every nested property inside the object
+   * is collected as a "deep" dependency.
+   */
+  function traverse (val) {
+    _traverse(val, seenObjects);
+    seenObjects.clear();
+  }
+
+  function _traverse (val, seen) {
+    var i, keys;
+    var isA = Array.isArray(val);
+    if ((!isA && !isObject(val)) || Object.isFrozen(val) || val instanceof VNode) {
+      return
+    }
+    if (val.__ob__) {
+      var depId = val.__ob__.dep.id;
+      if (seen.has(depId)) {
+        return
+      }
+      seen.add(depId);
+    }
+    if (isA) {
+      i = val.length;
+      while (i--) { _traverse(val[i], seen); }
+    } else {
+      keys = Object.keys(val);
+      i = keys.length;
+      while (i--) { _traverse(val[keys[i]], seen); }
+    }
+  }
+
+  /*  */
+
+  var normalizeEvent = cached(function (name) {
+    var passive = name.charAt(0) === '&';
+    name = passive ? name.slice(1) : name;
+    var once$$1 = name.charAt(0) === '~'; // Prefixed last, checked first
+    name = once$$1 ? name.slice(1) : name;
+    var capture = name.charAt(0) === '!';
+    name = capture ? name.slice(1) : name;
+    return {
+      name: name,
+      once: once$$1,
+      capture: capture,
+      passive: passive
+    }
+  });
+
+  function createFnInvoker (fns, vm) {
+    function invoker () {
+      var arguments$1 = arguments;
+
+      var fns = invoker.fns;
+      if (Array.isArray(fns)) {
+        var cloned = fns.slice();
+        for (var i = 0; i < cloned.length; i++) {
+          invokeWithErrorHandling(cloned[i], null, arguments$1, vm, "v-on handler");
+        }
+      } else {
+        // return handler return value for single handlers
+        return invokeWithErrorHandling(fns, null, arguments, vm, "v-on handler")
+      }
+    }
+    invoker.fns = fns;
+    return invoker
+  }
+
+  function updateListeners (
+    on,
+    oldOn,
+    add,
+    remove$$1,
+    createOnceHandler,
+    vm
+  ) {
+    var name, def$$1, cur, old, event;
+    for (name in on) {
+      def$$1 = cur = on[name];
+      old = oldOn[name];
+      event = normalizeEvent(name);
+      if (isUndef(cur)) {
+        warn(
+          "Invalid handler for event \"" + (event.name) + "\": got " + String(cur),
+          vm
+        );
+      } else if (isUndef(old)) {
+        if (isUndef(cur.fns)) {
+          cur = on[name] = createFnInvoker(cur, vm);
+        }
+        if (isTrue(event.once)) {
+          cur = on[name] = createOnceHandler(event.name, cur, event.capture);
+        }
+        add(event.name, cur, event.capture, event.passive, event.params);
+      } else if (cur !== old) {
+        old.fns = cur;
+        on[name] = old;
+      }
+    }
+    for (name in oldOn) {
+      if (isUndef(on[name])) {
+        event = normalizeEvent(name);
+        remove$$1(event.name, oldOn[name], event.capture);
+      }
+    }
+  }
+
+  /*  */
+
+  function mergeVNodeHook (def, hookKey, hook) {
+    if (def instanceof VNode) {
+      def = def.data.hook || (def.data.hook = {});
+    }
+    var invoker;
+    var oldHook = def[hookKey];
+
+    function wrappedHook () {
+      hook.apply(this, arguments);
+      // important: remove merged hook to ensure it's called only once
+      // and prevent memory leak
+      remove(invoker.fns, wrappedHook);
+    }
+
+    if (isUndef(oldHook)) {
+      // no existing hook
+      invoker = createFnInvoker([wrappedHook]);
+    } else {
+      /* istanbul ignore if */
+      if (isDef(oldHook.fns) && isTrue(oldHook.merged)) {
+        // already a merged invoker
+        invoker = oldHook;
+        invoker.fns.push(wrappedHook);
+      } else {
+        // existing plain hook
+        invoker = createFnInvoker([oldHook, wrappedHook]);
+      }
+    }
+
+    invoker.merged = true;
+    def[hookKey] = invoker;
+  }
+
+  /*  */
+
+  function extractPropsFromVNodeData (
+    data,
+    Ctor,
+    tag
+  ) {
+    // we are only extracting raw values here.
+    // validation and default values are handled in the child
+    // component itself.
+    var propOptions = Ctor.options.props;
+    if (isUndef(propOptions)) {
+      return
+    }
+    var res = {};
+    var attrs = data.attrs;
+    var props = data.props;
+    if (isDef(attrs) || isDef(props)) {
+      for (var key in propOptions) {
+        var altKey = hyphenate(key);
+        {
+          var keyInLowerCase = key.toLowerCase();
+          if (
+            key !== keyInLowerCase &&
+            attrs && hasOwn(attrs, keyInLowerCase)
+          ) {
+            tip(
+              "Prop \"" + keyInLowerCase + "\" is passed to component " +
+              (formatComponentName(tag || Ctor)) + ", but the declared prop name is" +
+              " \"" + key + "\". " +
+              "Note that HTML attributes are case-insensitive and camelCased " +
+              "props need to use their kebab-case equivalents when using in-DOM " +
+              "templates. You should probably use \"" + altKey + "\" instead of \"" + key + "\"."
+            );
+          }
+        }
+        checkProp(res, props, key, altKey, true) ||
+        checkProp(res, attrs, key, altKey, false);
+      }
+    }
+    return res
+  }
+
+  function checkProp (
+    res,
+    hash,
+    key,
+    altKey,
+    preserve
+  ) {
+    if (isDef(hash)) {
+      if (hasOwn(hash, key)) {
+        res[key] = hash[key];
+        if (!preserve) {
+          delete hash[key];
+        }
+        return true
+      } else if (hasOwn(hash, altKey)) {
+        res[key] = hash[altKey];
+        if (!preserve) {
+          delete hash[altKey];
+        }
+        return true
+      }
+    }
+    return false
+  }
+
+  /*  */
+
+  // The template compiler attempts to minimize the need for normalization by
+  // statically analyzing the template at compile time.
+  //
+  // For plain HTML markup, normalization can be completely skipped because the
+  // generated render function is guaranteed to return Array<VNode>. There are
+  // two cases where extra normalization is needed:
+
+  // 1. When the children contains components - because a functional component
+  // may return an Array instead of a single root. In this case, just a simple
+  // normalization is needed - if any child is an Array, we flatten the whole
+  // thing with Array.prototype.concat. It is guaranteed to be only 1-level deep
+  // because functional components already normalize their own children.
+  function simpleNormalizeChildren (children) {
+    for (var i = 0; i < children.length; i++) {
+      if (Array.isArray(children[i])) {
+        return Array.prototype.concat.apply([], children)
+      }
+    }
+    return children
+  }
+
+  // 2. When the children contains constructs that always generated nested Arrays,
+  // e.g. <template>, <slot>, v-for, or when the children is provided by user
+  // with hand-written render functions / JSX. In such cases a full normalization
+  // is needed to cater to all possible types of children values.
+  function normalizeChildren (children) {
+    return isPrimitive(children)
+      ? [createTextVNode(children)]
+      : Array.isArray(children)
+        ? normalizeArrayChildren(children)
+        : undefined
+  }
+
+  function isTextNode (node) {
+    return isDef(node) && isDef(node.text) && isFalse(node.isComment)
+  }
+
+  function normalizeArrayChildren (children, nestedIndex) {
+    var res = [];
+    var i, c, lastIndex, last;
+    for (i = 0; i < children.length; i++) {
+      c = children[i];
+      if (isUndef(c) || typeof c === 'boolean') { continue }
+      lastIndex = res.length - 1;
+      last = res[lastIndex];
+      //  nested
+      if (Array.isArray(c)) {
+        if (c.length > 0) {
+          c = normalizeArrayChildren(c, ((nestedIndex || '') + "_" + i));
+          // merge adjacent text nodes
+          if (isTextNode(c[0]) && isTextNode(last)) {
+            res[lastIndex] = createTextVNode(last.text + (c[0]).text);
+            c.shift();
+          }
+          res.push.apply(res, c);
+        }
+      } else if (isPrimitive(c)) {
+        if (isTextNode(last)) {
+          // merge adjacent text nodes
+          // this is necessary for SSR hydration because text nodes are
+          // essentially merged when rendered to HTML strings
+          res[lastIndex] = createTextVNode(last.text + c);
+        } else if (c !== '') {
+          // convert primitive to vnode
+          res.push(createTextVNode(c));
+        }
+      } else {
+        if (isTextNode(c) && isTextNode(last)) {
+          // merge adjacent text nodes
+          res[lastIndex] = createTextVNode(last.text + c.text);
+        } else {
+          // default key for nested array children (likely generated by v-for)
+          if (isTrue(children._isVList) &&
+            isDef(c.tag) &&
+            isUndef(c.key) &&
+            isDef(nestedIndex)) {
+            c.key = "__vlist" + nestedIndex + "_" + i + "__";
+          }
+          res.push(c);
+        }
+      }
+    }
+    return res
+  }
+
+  /*  */
+
+  function initProvide (vm) {
+    var provide = vm.$options.provide;
+    if (provide) {
+      vm._provided = typeof provide === 'function'
+        ? provide.call(vm)
+        : provide;
+    }
+  }
+
+  function initInjections (vm) {
+    var result = resolveInject(vm.$options.inject, vm);
+    if (result) {
+      toggleObserving(false);
+      Object.keys(result).forEach(function (key) {
+        /* istanbul ignore else */
+        {
+          defineReactive$$1(vm, key, result[key], function () {
+            warn(
+              "Avoid mutating an injected value directly since the changes will be " +
+              "overwritten whenever the provided component re-renders. " +
+              "injection being mutated: \"" + key + "\"",
+              vm
+            );
+          });
+        }
+      });
+      toggleObserving(true);
+    }
+  }
+
+  function resolveInject (inject, vm) {
+    if (inject) {
+      // inject is :any because flow is not smart enough to figure out cached
+      var result = Object.create(null);
+      var keys = hasSymbol
+        ? Reflect.ownKeys(inject)
+        : Object.keys(inject);
+
+      for (var i = 0; i < keys.length; i++) {
+        var key = keys[i];
+        // #6574 in case the inject object is observed...
+        if (key === '__ob__') { continue }
+        var provideKey = inject[key].from;
+        var source = vm;
+        while (source) {
+          if (source._provided && hasOwn(source._provided, provideKey)) {
+            result[key] = source._provided[provideKey];
+            break
+          }
+          source = source.$parent;
+        }
+        if (!source) {
+          if ('default' in inject[key]) {
+            var provideDefault = inject[key].default;
+            result[key] = typeof provideDefault === 'function'
+              ? provideDefault.call(vm)
+              : provideDefault;
+          } else {
+            warn(("Injection \"" + key + "\" not found"), vm);
+          }
+        }
+      }
+      return result
+    }
+  }
+
+  /*  */
+
+
+
+  /**
+   * Runtime helper for resolving raw children VNodes into a slot object.
+   */
+  function resolveSlots (
+    children,
+    context
+  ) {
+    if (!children || !children.length) {
+      return {}
+    }
+    var slots = {};
+    for (var i = 0, l = children.length; i < l; i++) {
+      var child = children[i];
+      var data = child.data;
+      // remove slot attribute if the node is resolved as a Vue slot node
+      if (data && data.attrs && data.attrs.slot) {
+        delete data.attrs.slot;
+      }
+      // named slots should only be respected if the vnode was rendered in the
+      // same context.
+      if ((child.context === context || child.fnContext === context) &&
+        data && data.slot != null
+      ) {
+        var name = data.slot;
+        var slot = (slots[name] || (slots[name] = []));
+        if (child.tag === 'template') {
+          slot.push.apply(slot, child.children || []);
+        } else {
+          slot.push(child);
+        }
+      } else {
+        (slots.default || (slots.default = [])).push(child);
+      }
+    }
+    // ignore slots that contains only whitespace
+    for (var name$1 in slots) {
+      if (slots[name$1].every(isWhitespace)) {
+        delete slots[name$1];
+      }
+    }
+    return slots
+  }
+
+  function isWhitespace (node) {
+    return (node.isComment && !node.asyncFactory) || node.text === ' '
+  }
+
+  /*  */
+
+  function normalizeScopedSlots (
+    slots,
+    normalSlots,
+    prevSlots
+  ) {
+    var res;
+    var hasNormalSlots = Object.keys(normalSlots).length > 0;
+    var isStable = slots ? !!slots.$stable : !hasNormalSlots;
+    var key = slots && slots.$key;
+    if (!slots) {
+      res = {};
+    } else if (slots._normalized) {
+      // fast path 1: child component re-render only, parent did not change
+      return slots._normalized
+    } else if (
+      isStable &&
+      prevSlots &&
+      prevSlots !== emptyObject &&
+      key === prevSlots.$key &&
+      !hasNormalSlots &&
+      !prevSlots.$hasNormal
+    ) {
+      // fast path 2: stable scoped slots w/ no normal slots to proxy,
+      // only need to normalize once
+      return prevSlots
+    } else {
+      res = {};
+      for (var key$1 in slots) {
+        if (slots[key$1] && key$1[0] !== '$') {
+          res[key$1] = normalizeScopedSlot(normalSlots, key$1, slots[key$1]);
+        }
+      }
+    }
+    // expose normal slots on scopedSlots
+    for (var key$2 in normalSlots) {
+      if (!(key$2 in res)) {
+        res[key$2] = proxyNormalSlot(normalSlots, key$2);
+      }
+    }
+    // avoriaz seems to mock a non-extensible $scopedSlots object
+    // and when that is passed down this would cause an error
+    if (slots && Object.isExtensible(slots)) {
+      (slots)._normalized = res;
+    }
+    def(res, '$stable', isStable);
+    def(res, '$key', key);
+    def(res, '$hasNormal', hasNormalSlots);
+    return res
+  }
+
+  function normalizeScopedSlot(normalSlots, key, fn) {
+    var normalized = function () {
+      var res = arguments.length ? fn.apply(null, arguments) : fn({});
+      res = res && typeof res === 'object' && !Array.isArray(res)
+        ? [res] // single vnode
+        : normalizeChildren(res);
+      return res && (
+        res.length === 0 ||
+        (res.length === 1 && res[0].isComment) // #9658
+      ) ? undefined
+        : res
+    };
+    // this is a slot using the new v-slot syntax without scope. although it is
+    // compiled as a scoped slot, render fn users would expect it to be present
+    // on this.$slots because the usage is semantically a normal slot.
+    if (fn.proxy) {
+      Object.defineProperty(normalSlots, key, {
+        get: normalized,
+        enumerable: true,
+        configurable: true
+      });
+    }
+    return normalized
+  }
+
+  function proxyNormalSlot(slots, key) {
+    return function () { return slots[key]; }
+  }
+
+  /*  */
+
+  /**
+   * Runtime helper for rendering v-for lists.
+   */
+  function renderList (
+    val,
+    render
+  ) {
+    var ret, i, l, keys, key;
+    if (Array.isArray(val) || typeof val === 'string') {
+      ret = new Array(val.length);
+      for (i = 0, l = val.length; i < l; i++) {
+        ret[i] = render(val[i], i);
+      }
+    } else if (typeof val === 'number') {
+      ret = new Array(val);
+      for (i = 0; i < val; i++) {
+        ret[i] = render(i + 1, i);
+      }
+    } else if (isObject(val)) {
+      if (hasSymbol && val[Symbol.iterator]) {
+        ret = [];
+        var iterator = val[Symbol.iterator]();
+        var result = iterator.next();
+        while (!result.done) {
+          ret.push(render(result.value, ret.length));
+          result = iterator.next();
+        }
+      } else {
+        keys = Object.keys(val);
+        ret = new Array(keys.length);
+        for (i = 0, l = keys.length; i < l; i++) {
+          key = keys[i];
+          ret[i] = render(val[key], key, i);
+        }
+      }
+    }
+    if (!isDef(ret)) {
+      ret = [];
+    }
+    (ret)._isVList = true;
+    return ret
+  }
+
+  /*  */
+
+  /**
+   * Runtime helper for rendering <slot>
+   */
+  function renderSlot (
+    name,
+    fallback,
+    props,
+    bindObject
+  ) {
+    var scopedSlotFn = this.$scopedSlots[name];
+    var nodes;
+    if (scopedSlotFn) { // scoped slot
+      props = props || {};
+      if (bindObject) {
+        if (!isObject(bindObject)) {
+          warn(
+            'slot v-bind without argument expects an Object',
+            this
+          );
+        }
+        props = extend(extend({}, bindObject), props);
+      }
+      nodes = scopedSlotFn(props) || fallback;
+    } else {
+      nodes = this.$slots[name] || fallback;
+    }
+
+    var target = props && props.slot;
+    if (target) {
+      return this.$createElement('template', { slot: target }, nodes)
+    } else {
+      return nodes
+    }
+  }
+
+  /*  */
+
+  /**
+   * Runtime helper for resolving filters
+   */
+  function resolveFilter (id) {
+    return resolveAsset(this.$options, 'filters', id, true) || identity
+  }
+
+  /*  */
+
+  function isKeyNotMatch (expect, actual) {
+    if (Array.isArray(expect)) {
+      return expect.indexOf(actual) === -1
+    } else {
+      return expect !== actual
+    }
+  }
+
+  /**
+   * Runtime helper for checking keyCodes from config.
+   * exposed as Vue.prototype._k
+   * passing in eventKeyName as last argument separately for backwards compat
+   */
+  function checkKeyCodes (
+    eventKeyCode,
+    key,
+    builtInKeyCode,
+    eventKeyName,
+    builtInKeyName
+  ) {
+    var mappedKeyCode = config.keyCodes[key] || builtInKeyCode;
+    if (builtInKeyName && eventKeyName && !config.keyCodes[key]) {
+      return isKeyNotMatch(builtInKeyName, eventKeyName)
+    } else if (mappedKeyCode) {
+      return isKeyNotMatch(mappedKeyCode, eventKeyCode)
+    } else if (eventKeyName) {
+      return hyphenate(eventKeyName) !== key
+    }
+  }
+
+  /*  */
+
+  /**
+   * Runtime helper for merging v-bind="object" into a VNode's data.
+   */
+  function bindObjectProps (
+    data,
+    tag,
+    value,
+    asProp,
+    isSync
+  ) {
+    if (value) {
+      if (!isObject(value)) {
+        warn(
+          'v-bind without argument expects an Object or Array value',
+          this
+        );
+      } else {
+        if (Array.isArray(value)) {
+          value = toObject(value);
+        }
+        var hash;
+        var loop = function ( key ) {
+          if (
+            key === 'class' ||
+            key === 'style' ||
+            isReservedAttribute(key)
+          ) {
+            hash = data;
+          } else {
+            var type = data.attrs && data.attrs.type;
+            hash = asProp || config.mustUseProp(tag, type, key)
+              ? data.domProps || (data.domProps = {})
+              : data.attrs || (data.attrs = {});
+          }
+          var camelizedKey = camelize(key);
+          var hyphenatedKey = hyphenate(key);
+          if (!(camelizedKey in hash) && !(hyphenatedKey in hash)) {
+            hash[key] = value[key];
+
+            if (isSync) {
+              var on = data.on || (data.on = {});
+              on[("update:" + key)] = function ($event) {
+                value[key] = $event;
+              };
+            }
+          }
+        };
+
+        for (var key in value) loop( key );
+      }
+    }
+    return data
+  }
+
+  /*  */
+
+  /**
+   * Runtime helper for rendering static trees.
+   */
+  function renderStatic (
+    index,
+    isInFor
+  ) {
+    var cached = this._staticTrees || (this._staticTrees = []);
+    var tree = cached[index];
+    // if has already-rendered static tree and not inside v-for,
+    // we can reuse the same tree.
+    if (tree && !isInFor) {
+      return tree
+    }
+    // otherwise, render a fresh tree.
+    tree = cached[index] = this.$options.staticRenderFns[index].call(
+      this._renderProxy,
+      null,
+      this // for render fns generated for functional component templates
+    );
+    markStatic(tree, ("__static__" + index), false);
+    return tree
+  }
+
+  /**
+   * Runtime helper for v-once.
+   * Effectively it means marking the node as static with a unique key.
+   */
+  function markOnce (
+    tree,
+    index,
+    key
+  ) {
+    markStatic(tree, ("__once__" + index + (key ? ("_" + key) : "")), true);
+    return tree
+  }
+
+  function markStatic (
+    tree,
+    key,
+    isOnce
+  ) {
+    if (Array.isArray(tree)) {
+      for (var i = 0; i < tree.length; i++) {
+        if (tree[i] && typeof tree[i] !== 'string') {
+          markStaticNode(tree[i], (key + "_" + i), isOnce);
+        }
+      }
+    } else {
+      markStaticNode(tree, key, isOnce);
+    }
+  }
+
+  function markStaticNode (node, key, isOnce) {
+    node.isStatic = true;
+    node.key = key;
+    node.isOnce = isOnce;
+  }
+
+  /*  */
+
+  function bindObjectListeners (data, value) {
+    if (value) {
+      if (!isPlainObject(value)) {
+        warn(
+          'v-on without argument expects an Object value',
+          this
+        );
+      } else {
+        var on = data.on = data.on ? extend({}, data.on) : {};
+        for (var key in value) {
+          var existing = on[key];
+          var ours = value[key];
+          on[key] = existing ? [].concat(existing, ours) : ours;
+        }
+      }
+    }
+    return data
+  }
+
+  /*  */
+
+  function resolveScopedSlots (
+    fns, // see flow/vnode
+    res,
+    // the following are added in 2.6
+    hasDynamicKeys,
+    contentHashKey
+  ) {
+    res = res || { $stable: !hasDynamicKeys };
+    for (var i = 0; i < fns.length; i++) {
+      var slot = fns[i];
+      if (Array.isArray(slot)) {
+        resolveScopedSlots(slot, res, hasDynamicKeys);
+      } else if (slot) {
+        // marker for reverse proxying v-slot without scope on this.$slots
+        if (slot.proxy) {
+          slot.fn.proxy = true;
+        }
+        res[slot.key] = slot.fn;
+      }
+    }
+    if (contentHashKey) {
+      (res).$key = contentHashKey;
+    }
+    return res
+  }
+
+  /*  */
+
+  function bindDynamicKeys (baseObj, values) {
+    for (var i = 0; i < values.length; i += 2) {
+      var key = values[i];
+      if (typeof key === 'string' && key) {
+        baseObj[values[i]] = values[i + 1];
+      } else if (key !== '' && key !== null) {
+        // null is a special value for explicitly removing a binding
+        warn(
+          ("Invalid value for dynamic directive argument (expected string or null): " + key),
+          this
+        );
+      }
+    }
+    return baseObj
+  }
+
+  // helper to dynamically append modifier runtime markers to event names.
+  // ensure only append when value is already string, otherwise it will be cast
+  // to string and cause the type check to miss.
+  function prependModifier (value, symbol) {
+    return typeof value === 'string' ? symbol + value : value
+  }
+
+  /*  */
+
+  function installRenderHelpers (target) {
+    target._o = markOnce;
+    target._n = toNumber;
+    target._s = toString;
+    target._l = renderList;
+    target._t = renderSlot;
+    target._q = looseEqual;
+    target._i = looseIndexOf;
+    target._m = renderStatic;
+    target._f = resolveFilter;
+    target._k = checkKeyCodes;
+    target._b = bindObjectProps;
+    target._v = createTextVNode;
+    target._e = createEmptyVNode;
+    target._u = resolveScopedSlots;
+    target._g = bindObjectListeners;
+    target._d = bindDynamicKeys;
+    target._p = prependModifier;
+  }
+
+  /*  */
+
+  function FunctionalRenderContext (
+    data,
+    props,
+    children,
+    parent,
+    Ctor
+  ) {
+    var this$1 = this;
+
+    var options = Ctor.options;
+    // ensure the createElement function in functional components
+    // gets a unique context - this is necessary for correct named slot check
+    var contextVm;
+    if (hasOwn(parent, '_uid')) {
+      contextVm = Object.create(parent);
+      // $flow-disable-line
+      contextVm._original = parent;
+    } else {
+      // the context vm passed in is a functional context as well.
+      // in this case we want to make sure we are able to get a hold to the
+      // real context instance.
+      contextVm = parent;
+      // $flow-disable-line
+      parent = parent._original;
+    }
+    var isCompiled = isTrue(options._compiled);
+    var needNormalization = !isCompiled;
+
+    this.data = data;
+    this.props = props;
+    this.children = children;
+    this.parent = parent;
+    this.listeners = data.on || emptyObject;
+    this.injections = resolveInject(options.inject, parent);
+    this.slots = function () {
+      if (!this$1.$slots) {
+        normalizeScopedSlots(
+          data.scopedSlots,
+          this$1.$slots = resolveSlots(children, parent)
+        );
+      }
+      return this$1.$slots
+    };
+
+    Object.defineProperty(this, 'scopedSlots', ({
+      enumerable: true,
+      get: function get () {
+        return normalizeScopedSlots(data.scopedSlots, this.slots())
+      }
+    }));
+
+    // support for compiled functional template
+    if (isCompiled) {
+      // exposing $options for renderStatic()
+      this.$options = options;
+      // pre-resolve slots for renderSlot()
+      this.$slots = this.slots();
+      this.$scopedSlots = normalizeScopedSlots(data.scopedSlots, this.$slots);
+    }
+
+    if (options._scopeId) {
+      this._c = function (a, b, c, d) {
+        var vnode = createElement(contextVm, a, b, c, d, needNormalization);
+        if (vnode && !Array.isArray(vnode)) {
+          vnode.fnScopeId = options._scopeId;
+          vnode.fnContext = parent;
+        }
+        return vnode
+      };
+    } else {
+      this._c = function (a, b, c, d) { return createElement(contextVm, a, b, c, d, needNormalization); };
+    }
+  }
+
+  installRenderHelpers(FunctionalRenderContext.prototype);
+
+  function createFunctionalComponent (
+    Ctor,
+    propsData,
+    data,
+    contextVm,
+    children
+  ) {
+    var options = Ctor.options;
+    var props = {};
+    var propOptions = options.props;
+    if (isDef(propOptions)) {
+      for (var key in propOptions) {
+        props[key] = validateProp(key, propOptions, propsData || emptyObject);
+      }
+    } else {
+      if (isDef(data.attrs)) { mergeProps(props, data.attrs); }
+      if (isDef(data.props)) { mergeProps(props, data.props); }
+    }
+
+    var renderContext = new FunctionalRenderContext(
+      data,
+      props,
+      children,
+      contextVm,
+      Ctor
+    );
+
+    var vnode = options.render.call(null, renderContext._c, renderContext);
+
+    if (vnode instanceof VNode) {
+      return cloneAndMarkFunctionalResult(vnode, data, renderContext.parent, options, renderContext)
+    } else if (Array.isArray(vnode)) {
+      var vnodes = normalizeChildren(vnode) || [];
+      var res = new Array(vnodes.length);
+      for (var i = 0; i < vnodes.length; i++) {
+        res[i] = cloneAndMarkFunctionalResult(vnodes[i], data, renderContext.parent, options, renderContext);
+      }
+      return res
+    }
+  }
+
+  function cloneAndMarkFunctionalResult (vnode, data, contextVm, options, renderContext) {
+    // #7817 clone node before setting fnContext, otherwise if the node is reused
+    // (e.g. it was from a cached normal slot) the fnContext causes named slots
+    // that should not be matched to match.
+    var clone = cloneVNode(vnode);
+    clone.fnContext = contextVm;
+    clone.fnOptions = options;
+    {
+      (clone.devtoolsMeta = clone.devtoolsMeta || {}).renderContext = renderContext;
+    }
+    if (data.slot) {
+      (clone.data || (clone.data = {})).slot = data.slot;
+    }
+    return clone
+  }
+
+  function mergeProps (to, from) {
+    for (var key in from) {
+      to[camelize(key)] = from[key];
+    }
+  }
+
+  /*  */
+
+  /*  */
+
+  /*  */
+
+  /*  */
+
+  // inline hooks to be invoked on component VNodes during patch
+  var componentVNodeHooks = {
+    init: function init (vnode, hydrating) {
+      if (
+        vnode.componentInstance &&
+        !vnode.componentInstance._isDestroyed &&
+        vnode.data.keepAlive
+      ) {
+        // kept-alive components, treat as a patch
+        var mountedNode = vnode; // work around flow
+        componentVNodeHooks.prepatch(mountedNode, mountedNode);
+      } else {
+        var child = vnode.componentInstance = createComponentInstanceForVnode(
+          vnode,
+          activeInstance
+        );
+        child.$mount(hydrating ? vnode.elm : undefined, hydrating);
+      }
+    },
+
+    prepatch: function prepatch (oldVnode, vnode) {
+      var options = vnode.componentOptions;
+      var child = vnode.componentInstance = oldVnode.componentInstance;
+      updateChildComponent(
+        child,
+        options.propsData, // updated props
+        options.listeners, // updated listeners
+        vnode, // new parent vnode
+        options.children // new children
+      );
+    },
+
+    insert: function insert (vnode) {
+      var context = vnode.context;
+      var componentInstance = vnode.componentInstance;
+      if (!componentInstance._isMounted) {
+        componentInstance._isMounted = true;
+        callHook(componentInstance, 'mounted');
+      }
+      if (vnode.data.keepAlive) {
+        if (context._isMounted) {
+          // vue-router#1212
+          // During updates, a kept-alive component's child components may
+          // change, so directly walking the tree here may call activated hooks
+          // on incorrect children. Instead we push them into a queue which will
+          // be processed after the whole patch process ended.
+          queueActivatedComponent(componentInstance);
+        } else {
+          activateChildComponent(componentInstance, true /* direct */);
+        }
+      }
+    },
+
+    destroy: function destroy (vnode) {
+      var componentInstance = vnode.componentInstance;
+      if (!componentInstance._isDestroyed) {
+        if (!vnode.data.keepAlive) {
+          componentInstance.$destroy();
+        } else {
+          deactivateChildComponent(componentInstance, true /* direct */);
+        }
+      }
+    }
+  };
+
+  var hooksToMerge = Object.keys(componentVNodeHooks);
+
+  function createComponent (
+    Ctor,
+    data,
+    context,
+    children,
+    tag
+  ) {
+    if (isUndef(Ctor)) {
+      return
+    }
+
+    var baseCtor = context.$options._base;
+
+    // plain options object: turn it into a constructor
+    if (isObject(Ctor)) {
+      Ctor = baseCtor.extend(Ctor);
+    }
+
+    // if at this stage it's not a constructor or an async component factory,
+    // reject.
+    if (typeof Ctor !== 'function') {
+      {
+        warn(("Invalid Component definition: " + (String(Ctor))), context);
+      }
+      return
+    }
+
+    // async component
+    var asyncFactory;
+    if (isUndef(Ctor.cid)) {
+      asyncFactory = Ctor;
+      Ctor = resolveAsyncComponent(asyncFactory, baseCtor);
+      if (Ctor === undefined) {
+        // return a placeholder node for async component, which is rendered
+        // as a comment node but preserves all the raw information for the node.
+        // the information will be used for async server-rendering and hydration.
+        return createAsyncPlaceholder(
+          asyncFactory,
+          data,
+          context,
+          children,
+          tag
+        )
+      }
+    }
+
+    data = data || {};
+
+    // resolve constructor options in case global mixins are applied after
+    // component constructor creation
+    resolveConstructorOptions(Ctor);
+
+    // transform component v-model data into props & events
+    if (isDef(data.model)) {
+      transformModel(Ctor.options, data);
+    }
+
+    // extract props
+    var propsData = extractPropsFromVNodeData(data, Ctor, tag);
+
+    // functional component
+    if (isTrue(Ctor.options.functional)) {
+      return createFunctionalComponent(Ctor, propsData, data, context, children)
+    }
+
+    // extract listeners, since these needs to be treated as
+    // child component listeners instead of DOM listeners
+    var listeners = data.on;
+    // replace with listeners with .native modifier
+    // so it gets processed during parent component patch.
+    data.on = data.nativeOn;
+
+    if (isTrue(Ctor.options.abstract)) {
+      // abstract components do not keep anything
+      // other than props & listeners & slot
+
+      // work around flow
+      var slot = data.slot;
+      data = {};
+      if (slot) {
+        data.slot = slot;
+      }
+    }
+
+    // install component management hooks onto the placeholder node
+    installComponentHooks(data);
+
+    // return a placeholder vnode
+    var name = Ctor.options.name || tag;
+    var vnode = new VNode(
+      ("vue-component-" + (Ctor.cid) + (name ? ("-" + name) : '')),
+      data, undefined, undefined, undefined, context,
+      { Ctor: Ctor, propsData: propsData, listeners: listeners, tag: tag, children: children },
+      asyncFactory
+    );
+
+    return vnode
+  }
+
+  function createComponentInstanceForVnode (
+    vnode, // we know it's MountedComponentVNode but flow doesn't
+    parent // activeInstance in lifecycle state
+  ) {
+    var options = {
+      _isComponent: true,
+      _parentVnode: vnode,
+      parent: parent
+    };
+    // check inline-template render functions
+    var inlineTemplate = vnode.data.inlineTemplate;
+    if (isDef(inlineTemplate)) {
+      options.render = inlineTemplate.render;
+      options.staticRenderFns = inlineTemplate.staticRenderFns;
+    }
+    return new vnode.componentOptions.Ctor(options)
+  }
+
+  function installComponentHooks (data) {
+    var hooks = data.hook || (data.hook = {});
+    for (var i = 0; i < hooksToMerge.length; i++) {
+      var key = hooksToMerge[i];
+      var existing = hooks[key];
+      var toMerge = componentVNodeHooks[key];
+      if (existing !== toMerge && !(existing && existing._merged)) {
+        hooks[key] = existing ? mergeHook$1(toMerge, existing) : toMerge;
+      }
+    }
+  }
+
+  function mergeHook$1 (f1, f2) {
+    var merged = function (a, b) {
+      // flow complains about extra args which is why we use any
+      f1(a, b);
+      f2(a, b);
+    };
+    merged._merged = true;
+    return merged
+  }
+
+  // transform component v-model info (value and callback) into
+  // prop and event handler respectively.
+  function transformModel (options, data) {
+    var prop = (options.model && options.model.prop) || 'value';
+    var event = (options.model && options.model.event) || 'input'
+    ;(data.attrs || (data.attrs = {}))[prop] = data.model.value;
+    var on = data.on || (data.on = {});
+    var existing = on[event];
+    var callback = data.model.callback;
+    if (isDef(existing)) {
+      if (
+        Array.isArray(existing)
+          ? existing.indexOf(callback) === -1
+          : existing !== callback
+      ) {
+        on[event] = [callback].concat(existing);
+      }
+    } else {
+      on[event] = callback;
+    }
+  }
+
+  /*  */
+
+  var SIMPLE_NORMALIZE = 1;
+  var ALWAYS_NORMALIZE = 2;
+
+  // wrapper function for providing a more flexible interface
+  // without getting yelled at by flow
+  function createElement (
+    context,
+    tag,
+    data,
+    children,
+    normalizationType,
+    alwaysNormalize
+  ) {
+    if (Array.isArray(data) || isPrimitive(data)) {
+      normalizationType = children;
+      children = data;
+      data = undefined;
+    }
+    if (isTrue(alwaysNormalize)) {
+      normalizationType = ALWAYS_NORMALIZE;
+    }
+    return _createElement(context, tag, data, children, normalizationType)
+  }
+
+  function _createElement (
+    context,
+    tag,
+    data,
+    children,
+    normalizationType
+  ) {
+    if (isDef(data) && isDef((data).__ob__)) {
+      warn(
+        "Avoid using observed data object as vnode data: " + (JSON.stringify(data)) + "\n" +
+        'Always create fresh vnode data objects in each render!',
+        context
+      );
+      return createEmptyVNode()
+    }
+    // object syntax in v-bind
+    if (isDef(data) && isDef(data.is)) {
+      tag = data.is;
+    }
+    if (!tag) {
+      // in case of component :is set to falsy value
+      return createEmptyVNode()
+    }
+    // warn against non-primitive key
+    if (isDef(data) && isDef(data.key) && !isPrimitive(data.key)
+    ) {
+      {
+        warn(
+          'Avoid using non-primitive value as key, ' +
+          'use string/number value instead.',
+          context
+        );
+      }
+    }
+    // support single function children as default scoped slot
+    if (Array.isArray(children) &&
+      typeof children[0] === 'function'
+    ) {
+      data = data || {};
+      data.scopedSlots = { default: children[0] };
+      children.length = 0;
+    }
+    if (normalizationType === ALWAYS_NORMALIZE) {
+      children = normalizeChildren(children);
+    } else if (normalizationType === SIMPLE_NORMALIZE) {
+      children = simpleNormalizeChildren(children);
+    }
+    var vnode, ns;
+    if (typeof tag === 'string') {
+      var Ctor;
+      ns = (context.$vnode && context.$vnode.ns) || config.getTagNamespace(tag);
+      if (config.isReservedTag(tag)) {
+        // platform built-in elements
+        if (isDef(data) && isDef(data.nativeOn)) {
+          warn(
+            ("The .native modifier for v-on is only valid on components but it was used on <" + tag + ">."),
+            context
+          );
+        }
+        vnode = new VNode(
+          config.parsePlatformTagName(tag), data, children,
+          undefined, undefined, context
+        );
+      } else if ((!data || !data.pre) && isDef(Ctor = resolveAsset(context.$options, 'components', tag))) {
+        // component
+        vnode = createComponent(Ctor, data, context, children, tag);
+      } else {
+        // unknown or unlisted namespaced elements
+        // check at runtime because it may get assigned a namespace when its
+        // parent normalizes children
+        vnode = new VNode(
+          tag, data, children,
+          undefined, undefined, context
+        );
+      }
+    } else {
+      // direct component options / constructor
+      vnode = createComponent(tag, data, context, children);
+    }
+    if (Array.isArray(vnode)) {
+      return vnode
+    } else if (isDef(vnode)) {
+      if (isDef(ns)) { applyNS(vnode, ns); }
+      if (isDef(data)) { registerDeepBindings(data); }
+      return vnode
+    } else {
+      return createEmptyVNode()
+    }
+  }
+
+  function applyNS (vnode, ns, force) {
+    vnode.ns = ns;
+    if (vnode.tag === 'foreignObject') {
+      // use default namespace inside foreignObject
+      ns = undefined;
+      force = true;
+    }
+    if (isDef(vnode.children)) {
+      for (var i = 0, l = vnode.children.length; i < l; i++) {
+        var child = vnode.children[i];
+        if (isDef(child.tag) && (
+          isUndef(child.ns) || (isTrue(force) && child.tag !== 'svg'))) {
+          applyNS(child, ns, force);
+        }
+      }
+    }
+  }
+
+  // ref #5318
+  // necessary to ensure parent re-render when deep bindings like :style and
+  // :class are used on slot nodes
+  function registerDeepBindings (data) {
+    if (isObject(data.style)) {
+      traverse(data.style);
+    }
+    if (isObject(data.class)) {
+      traverse(data.class);
+    }
+  }
+
+  /*  */
+
+  function initRender (vm) {
+    vm._vnode = null; // the root of the child tree
+    vm._staticTrees = null; // v-once cached trees
+    var options = vm.$options;
+    var parentVnode = vm.$vnode = options._parentVnode; // the placeholder node in parent tree
+    var renderContext = parentVnode && parentVnode.context;
+    vm.$slots = resolveSlots(options._renderChildren, renderContext);
+    vm.$scopedSlots = emptyObject;
+    // bind the createElement fn to this instance
+    // so that we get proper render context inside it.
+    // args order: tag, data, children, normalizationType, alwaysNormalize
+    // internal version is used by render functions compiled from templates
+    vm._c = function (a, b, c, d) { return createElement(vm, a, b, c, d, false); };
+    // normalization is always applied for the public version, used in
+    // user-written render functions.
+    vm.$createElement = function (a, b, c, d) { return createElement(vm, a, b, c, d, true); };
+
+    // $attrs & $listeners are exposed for easier HOC creation.
+    // they need to be reactive so that HOCs using them are always updated
+    var parentData = parentVnode && parentVnode.data;
+
+    /* istanbul ignore else */
+    {
+      defineReactive$$1(vm, '$attrs', parentData && parentData.attrs || emptyObject, function () {
+        !isUpdatingChildComponent && warn("$attrs is readonly.", vm);
+      }, true);
+      defineReactive$$1(vm, '$listeners', options._parentListeners || emptyObject, function () {
+        !isUpdatingChildComponent && warn("$listeners is readonly.", vm);
+      }, true);
+    }
+  }
+
+  var currentRenderingInstance = null;
+
+  function renderMixin (Vue) {
+    // install runtime convenience helpers
+    installRenderHelpers(Vue.prototype);
+
+    Vue.prototype.$nextTick = function (fn) {
+      return nextTick(fn, this)
+    };
+
+    Vue.prototype._render = function () {
+      var vm = this;
+      var ref = vm.$options;
+      var render = ref.render;
+      var _parentVnode = ref._parentVnode;
+
+      if (_parentVnode) {
+        vm.$scopedSlots = normalizeScopedSlots(
+          _parentVnode.data.scopedSlots,
+          vm.$slots,
+          vm.$scopedSlots
+        );
+      }
+
+      // set parent vnode. this allows render functions to have access
+      // to the data on the placeholder node.
+      vm.$vnode = _parentVnode;
+      // render self
+      var vnode;
+      try {
+        // There's no need to maintain a stack because all render fns are called
+        // separately from one another. Nested component's render fns are called
+        // when parent component is patched.
+        currentRenderingInstance = vm;
+        vnode = render.call(vm._renderProxy, vm.$createElement);
+      } catch (e) {
+        handleError(e, vm, "render");
+        // return error render result,
+        // or previous vnode to prevent render error causing blank component
+        /* istanbul ignore else */
+        if (vm.$options.renderError) {
+          try {
+            vnode = vm.$options.renderError.call(vm._renderProxy, vm.$createElement, e);
+          } catch (e) {
+            handleError(e, vm, "renderError");
+            vnode = vm._vnode;
+          }
+        } else {
+          vnode = vm._vnode;
+        }
+      } finally {
+        currentRenderingInstance = null;
+      }
+      // if the returned array contains only a single node, allow it
+      if (Array.isArray(vnode) && vnode.length === 1) {
+        vnode = vnode[0];
+      }
+      // return empty vnode in case the render function errored out
+      if (!(vnode instanceof VNode)) {
+        if (Array.isArray(vnode)) {
+          warn(
+            'Multiple root nodes returned from render function. Render function ' +
+            'should return a single root node.',
+            vm
+          );
+        }
+        vnode = createEmptyVNode();
+      }
+      // set parent
+      vnode.parent = _parentVnode;
+      return vnode
+    };
+  }
+
+  /*  */
+
+  function ensureCtor (comp, base) {
+    if (
+      comp.__esModule ||
+      (hasSymbol && comp[Symbol.toStringTag] === 'Module')
+    ) {
+      comp = comp.default;
+    }
+    return isObject(comp)
+      ? base.extend(comp)
+      : comp
+  }
+
+  function createAsyncPlaceholder (
+    factory,
+    data,
+    context,
+    children,
+    tag
+  ) {
+    var node = createEmptyVNode();
+    node.asyncFactory = factory;
+    node.asyncMeta = { data: data, context: context, children: children, tag: tag };
+    return node
+  }
+
+  function resolveAsyncComponent (
+    factory,
+    baseCtor
+  ) {
+    if (isTrue(factory.error) && isDef(factory.errorComp)) {
+      return factory.errorComp
+    }
+
+    if (isDef(factory.resolved)) {
+      return factory.resolved
+    }
+
+    var owner = currentRenderingInstance;
+    if (owner && isDef(factory.owners) && factory.owners.indexOf(owner) === -1) {
+      // already pending
+      factory.owners.push(owner);
+    }
+
+    if (isTrue(factory.loading) && isDef(factory.loadingComp)) {
+      return factory.loadingComp
+    }
+
+    if (owner && !isDef(factory.owners)) {
+      var owners = factory.owners = [owner];
+      var sync = true;
+      var timerLoading = null;
+      var timerTimeout = null
+
+      ;(owner).$on('hook:destroyed', function () { return remove(owners, owner); });
+
+      var forceRender = function (renderCompleted) {
+        for (var i = 0, l = owners.length; i < l; i++) {
+          (owners[i]).$forceUpdate();
+        }
+
+        if (renderCompleted) {
+          owners.length = 0;
+          if (timerLoading !== null) {
+            clearTimeout(timerLoading);
+            timerLoading = null;
+          }
+          if (timerTimeout !== null) {
+            clearTimeout(timerTimeout);
+            timerTimeout = null;
+          }
+        }
+      };
+
+      var resolve = once(function (res) {
+        // cache resolved
+        factory.resolved = ensureCtor(res, baseCtor);
+        // invoke callbacks only if this is not a synchronous resolve
+        // (async resolves are shimmed as synchronous during SSR)
+        if (!sync) {
+          forceRender(true);
+        } else {
+          owners.length = 0;
+        }
+      });
+
+      var reject = once(function (reason) {
+        warn(
+          "Failed to resolve async component: " + (String(factory)) +
+          (reason ? ("\nReason: " + reason) : '')
+        );
+        if (isDef(factory.errorComp)) {
+          factory.error = true;
+          forceRender(true);
+        }
+      });
+
+      var res = factory(resolve, reject);
+
+      if (isObject(res)) {
+        if (isPromise(res)) {
+          // () => Promise
+          if (isUndef(factory.resolved)) {
+            res.then(resolve, reject);
+          }
+        } else if (isPromise(res.component)) {
+          res.component.then(resolve, reject);
+
+          if (isDef(res.error)) {
+            factory.errorComp = ensureCtor(res.error, baseCtor);
+          }
+
+          if (isDef(res.loading)) {
+            factory.loadingComp = ensureCtor(res.loading, baseCtor);
+            if (res.delay === 0) {
+              factory.loading = true;
+            } else {
+              timerLoading = setTimeout(function () {
+                timerLoading = null;
+                if (isUndef(factory.resolved) && isUndef(factory.error)) {
+                  factory.loading = true;
+                  forceRender(false);
+                }
+              }, res.delay || 200);
+            }
+          }
+
+          if (isDef(res.timeout)) {
+            timerTimeout = setTimeout(function () {
+              timerTimeout = null;
+              if (isUndef(factory.resolved)) {
+                reject(
+                  "timeout (" + (res.timeout) + "ms)"
+                );
+              }
+            }, res.timeout);
+          }
+        }
+      }
+
+      sync = false;
+      // return in case resolved synchronously
+      return factory.loading
+        ? factory.loadingComp
+        : factory.resolved
+    }
+  }
+
+  /*  */
+
+  function isAsyncPlaceholder (node) {
+    return node.isComment && node.asyncFactory
+  }
+
+  /*  */
+
+  function getFirstComponentChild (children) {
+    if (Array.isArray(children)) {
+      for (var i = 0; i < children.length; i++) {
+        var c = children[i];
+        if (isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) {
+          return c
+        }
+      }
+    }
+  }
+
+  /*  */
+
+  /*  */
+
+  function initEvents (vm) {
+    vm._events = Object.create(null);
+    vm._hasHookEvent = false;
+    // init parent attached events
+    var listeners = vm.$options._parentListeners;
+    if (listeners) {
+      updateComponentListeners(vm, listeners);
+    }
+  }
+
+  var target;
+
+  function add (event, fn) {
+    target.$on(event, fn);
+  }
+
+  function remove$1 (event, fn) {
+    target.$off(event, fn);
+  }
+
+  function createOnceHandler (event, fn) {
+    var _target = target;
+    return function onceHandler () {
+      var res = fn.apply(null, arguments);
+      if (res !== null) {
+        _target.$off(event, onceHandler);
+      }
+    }
+  }
+
+  function updateComponentListeners (
+    vm,
+    listeners,
+    oldListeners
+  ) {
+    target = vm;
+    updateListeners(listeners, oldListeners || {}, add, remove$1, createOnceHandler, vm);
+    target = undefined;
+  }
+
+  function eventsMixin (Vue) {
+    var hookRE = /^hook:/;
+    Vue.prototype.$on = function (event, fn) {
+      var vm = this;
+      if (Array.isArray(event)) {
+        for (var i = 0, l = event.length; i < l; i++) {
+          vm.$on(event[i], fn);
+        }
+      } else {
+        (vm._events[event] || (vm._events[event] = [])).push(fn);
+        // optimize hook:event cost by using a boolean flag marked at registration
+        // instead of a hash lookup
+        if (hookRE.test(event)) {
+          vm._hasHookEvent = true;
+        }
+      }
+      return vm
+    };
+
+    Vue.prototype.$once = function (event, fn) {
+      var vm = this;
+      function on () {
+        vm.$off(event, on);
+        fn.apply(vm, arguments);
+      }
+      on.fn = fn;
+      vm.$on(event, on);
+      return vm
+    };
+
+    Vue.prototype.$off = function (event, fn) {
+      var vm = this;
+      // all
+      if (!arguments.length) {
+        vm._events = Object.create(null);
+        return vm
+      }
+      // array of events
+      if (Array.isArray(event)) {
+        for (var i$1 = 0, l = event.length; i$1 < l; i$1++) {
+          vm.$off(event[i$1], fn);
+        }
+        return vm
+      }
+      // specific event
+      var cbs = vm._events[event];
+      if (!cbs) {
+        return vm
+      }
+      if (!fn) {
+        vm._events[event] = null;
+        return vm
+      }
+      // specific handler
+      var cb;
+      var i = cbs.length;
+      while (i--) {
+        cb = cbs[i];
+        if (cb === fn || cb.fn === fn) {
+          cbs.splice(i, 1);
+          break
+        }
+      }
+      return vm
+    };
+
+    Vue.prototype.$emit = function (event) {
+      var vm = this;
+      {
+        var lowerCaseEvent = event.toLowerCase();
+        if (lowerCaseEvent !== event && vm._events[lowerCaseEvent]) {
+          tip(
+            "Event \"" + lowerCaseEvent + "\" is emitted in component " +
+            (formatComponentName(vm)) + " but the handler is registered for \"" + event + "\". " +
+            "Note that HTML attributes are case-insensitive and you cannot use " +
+            "v-on to listen to camelCase events when using in-DOM templates. " +
+            "You should probably use \"" + (hyphenate(event)) + "\" instead of \"" + event + "\"."
+          );
+        }
+      }
+      var cbs = vm._events[event];
+      if (cbs) {
+        cbs = cbs.length > 1 ? toArray(cbs) : cbs;
+        var args = toArray(arguments, 1);
+        var info = "event handler for \"" + event + "\"";
+        for (var i = 0, l = cbs.length; i < l; i++) {
+          invokeWithErrorHandling(cbs[i], vm, args, vm, info);
+        }
+      }
+      return vm
+    };
+  }
+
+  /*  */
+
+  var activeInstance = null;
+  var isUpdatingChildComponent = false;
+
+  function setActiveInstance(vm) {
+    var prevActiveInstance = activeInstance;
+    activeInstance = vm;
+    return function () {
+      activeInstance = prevActiveInstance;
+    }
+  }
+
+  function initLifecycle (vm) {
+    var options = vm.$options;
+
+    // locate first non-abstract parent
+    var parent = options.parent;
+    if (parent && !options.abstract) {
+      while (parent.$options.abstract && parent.$parent) {
+        parent = parent.$parent;
+      }
+      parent.$children.push(vm);
+    }
+
+    vm.$parent = parent;
+    vm.$root = parent ? parent.$root : vm;
+
+    vm.$children = [];
+    vm.$refs = {};
+
+    vm._watcher = null;
+    vm._inactive = null;
+    vm._directInactive = false;
+    vm._isMounted = false;
+    vm._isDestroyed = false;
+    vm._isBeingDestroyed = false;
+  }
+
+  function lifecycleMixin (Vue) {
+    Vue.prototype._update = function (vnode, hydrating) {
+      var vm = this;
+      var prevEl = vm.$el;
+      var prevVnode = vm._vnode;
+      var restoreActiveInstance = setActiveInstance(vm);
+      vm._vnode = vnode;
+      // Vue.prototype.__patch__ is injected in entry points
+      // based on the rendering backend used.
+      if (!prevVnode) {
+        // initial render
+        vm.$el = vm.__patch__(vm.$el, vnode, hydrating, false /* removeOnly */);
+      } else {
+        // updates
+        vm.$el = vm.__patch__(prevVnode, vnode);
+      }
+      restoreActiveInstance();
+      // update __vue__ reference
+      if (prevEl) {
+        prevEl.__vue__ = null;
+      }
+      if (vm.$el) {
+        vm.$el.__vue__ = vm;
+      }
+      // if parent is an HOC, update its $el as well
+      if (vm.$vnode && vm.$parent && vm.$vnode === vm.$parent._vnode) {
+        vm.$parent.$el = vm.$el;
+      }
+      // updated hook is called by the scheduler to ensure that children are
+      // updated in a parent's updated hook.
+    };
+
+    Vue.prototype.$forceUpdate = function () {
+      var vm = this;
+      if (vm._watcher) {
+        vm._watcher.update();
+      }
+    };
+
+    Vue.prototype.$destroy = function () {
+      var vm = this;
+      if (vm._isBeingDestroyed) {
+        return
+      }
+      callHook(vm, 'beforeDestroy');
+      vm._isBeingDestroyed = true;
+      // remove self from parent
+      var parent = vm.$parent;
+      if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) {
+        remove(parent.$children, vm);
+      }
+      // teardown watchers
+      if (vm._watcher) {
+        vm._watcher.teardown();
+      }
+      var i = vm._watchers.length;
+      while (i--) {
+        vm._watchers[i].teardown();
+      }
+      // remove reference from data ob
+      // frozen object may not have observer.
+      if (vm._data.__ob__) {
+        vm._data.__ob__.vmCount--;
+      }
+      // call the last hook...
+      vm._isDestroyed = true;
+      // invoke destroy hooks on current rendered tree
+      vm.__patch__(vm._vnode, null);
+      // fire destroyed hook
+      callHook(vm, 'destroyed');
+      // turn off all instance listeners.
+      vm.$off();
+      // remove __vue__ reference
+      if (vm.$el) {
+        vm.$el.__vue__ = null;
+      }
+      // release circular reference (#6759)
+      if (vm.$vnode) {
+        vm.$vnode.parent = null;
+      }
+    };
+  }
+
+  function mountComponent (
+    vm,
+    el,
+    hydrating
+  ) {
+    vm.$el = el;
+    if (!vm.$options.render) {
+      vm.$options.render = createEmptyVNode;
+      {
+        /* istanbul ignore if */
+        if ((vm.$options.template && vm.$options.template.charAt(0) !== '#') ||
+          vm.$options.el || el) {
+          warn(
+            'You are using the runtime-only build of Vue where the template ' +
+            'compiler is not available. Either pre-compile the templates into ' +
+            'render functions, or use the compiler-included build.',
+            vm
+          );
+        } else {
+          warn(
+            'Failed to mount component: template or render function not defined.',
+            vm
+          );
+        }
+      }
+    }
+    callHook(vm, 'beforeMount');
+
+    var updateComponent;
+    /* istanbul ignore if */
+    if (config.performance && mark) {
+      updateComponent = function () {
+        var name = vm._name;
+        var id = vm._uid;
+        var startTag = "vue-perf-start:" + id;
+        var endTag = "vue-perf-end:" + id;
+
+        mark(startTag);
+        var vnode = vm._render();
+        mark(endTag);
+        measure(("vue " + name + " render"), startTag, endTag);
+
+        mark(startTag);
+        vm._update(vnode, hydrating);
+        mark(endTag);
+        measure(("vue " + name + " patch"), startTag, endTag);
+      };
+    } else {
+      updateComponent = function () {
+        vm._update(vm._render(), hydrating);
+      };
+    }
+
+    // we set this to vm._watcher inside the watcher's constructor
+    // since the watcher's initial patch may call $forceUpdate (e.g. inside child
+    // component's mounted hook), which relies on vm._watcher being already defined
+    new Watcher(vm, updateComponent, noop, {
+      before: function before () {
+        if (vm._isMounted && !vm._isDestroyed) {
+          callHook(vm, 'beforeUpdate');
+        }
+      }
+    }, true /* isRenderWatcher */);
+    hydrating = false;
+
+    // manually mounted instance, call mounted on self
+    // mounted is called for render-created child components in its inserted hook
+    if (vm.$vnode == null) {
+      vm._isMounted = true;
+      callHook(vm, 'mounted');
+    }
+    return vm
+  }
+
+  function updateChildComponent (
+    vm,
+    propsData,
+    listeners,
+    parentVnode,
+    renderChildren
+  ) {
+    {
+      isUpdatingChildComponent = true;
+    }
+
+    // determine whether component has slot children
+    // we need to do this before overwriting $options._renderChildren.
+
+    // check if there are dynamic scopedSlots (hand-written or compiled but with
+    // dynamic slot names). Static scoped slots compiled from template has the
+    // "$stable" marker.
+    var newScopedSlots = parentVnode.data.scopedSlots;
+    var oldScopedSlots = vm.$scopedSlots;
+    var hasDynamicScopedSlot = !!(
+      (newScopedSlots && !newScopedSlots.$stable) ||
+      (oldScopedSlots !== emptyObject && !oldScopedSlots.$stable) ||
+      (newScopedSlots && vm.$scopedSlots.$key !== newScopedSlots.$key)
+    );
+
+    // Any static slot children from the parent may have changed during parent's
+    // update. Dynamic scoped slots may also have changed. In such cases, a forced
+    // update is necessary to ensure correctness.
+    var needsForceUpdate = !!(
+      renderChildren ||               // has new static slots
+      vm.$options._renderChildren ||  // has old static slots
+      hasDynamicScopedSlot
+    );
+
+    vm.$options._parentVnode = parentVnode;
+    vm.$vnode = parentVnode; // update vm's placeholder node without re-render
+
+    if (vm._vnode) { // update child tree's parent
+      vm._vnode.parent = parentVnode;
+    }
+    vm.$options._renderChildren = renderChildren;
+
+    // update $attrs and $listeners hash
+    // these are also reactive so they may trigger child update if the child
+    // used them during render
+    vm.$attrs = parentVnode.data.attrs || emptyObject;
+    vm.$listeners = listeners || emptyObject;
+
+    // update props
+    if (propsData && vm.$options.props) {
+      toggleObserving(false);
+      var props = vm._props;
+      var propKeys = vm.$options._propKeys || [];
+      for (var i = 0; i < propKeys.length; i++) {
+        var key = propKeys[i];
+        var propOptions = vm.$options.props; // wtf flow?
+        props[key] = validateProp(key, propOptions, propsData, vm);
+      }
+      toggleObserving(true);
+      // keep a copy of raw propsData
+      vm.$options.propsData = propsData;
+    }
+
+    // update listeners
+    listeners = listeners || emptyObject;
+    var oldListeners = vm.$options._parentListeners;
+    vm.$options._parentListeners = listeners;
+    updateComponentListeners(vm, listeners, oldListeners);
+
+    // resolve slots + force update if has children
+    if (needsForceUpdate) {
+      vm.$slots = resolveSlots(renderChildren, parentVnode.context);
+      vm.$forceUpdate();
+    }
+
+    {
+      isUpdatingChildComponent = false;
+    }
+  }
+
+  function isInInactiveTree (vm) {
+    while (vm && (vm = vm.$parent)) {
+      if (vm._inactive) { return true }
+    }
+    return false
+  }
+
+  function activateChildComponent (vm, direct) {
+    if (direct) {
+      vm._directInactive = false;
+      if (isInInactiveTree(vm)) {
+        return
+      }
+    } else if (vm._directInactive) {
+      return
+    }
+    if (vm._inactive || vm._inactive === null) {
+      vm._inactive = false;
+      for (var i = 0; i < vm.$children.length; i++) {
+        activateChildComponent(vm.$children[i]);
+      }
+      callHook(vm, 'activated');
+    }
+  }
+
+  function deactivateChildComponent (vm, direct) {
+    if (direct) {
+      vm._directInactive = true;
+      if (isInInactiveTree(vm)) {
+        return
+      }
+    }
+    if (!vm._inactive) {
+      vm._inactive = true;
+      for (var i = 0; i < vm.$children.length; i++) {
+        deactivateChildComponent(vm.$children[i]);
+      }
+      callHook(vm, 'deactivated');
+    }
+  }
+
+  function callHook (vm, hook) {
+    // #7573 disable dep collection when invoking lifecycle hooks
+    pushTarget();
+    var handlers = vm.$options[hook];
+    var info = hook + " hook";
+    if (handlers) {
+      for (var i = 0, j = handlers.length; i < j; i++) {
+        invokeWithErrorHandling(handlers[i], vm, null, vm, info);
+      }
+    }
+    if (vm._hasHookEvent) {
+      vm.$emit('hook:' + hook);
+    }
+    popTarget();
+  }
+
+  /*  */
+
+  var MAX_UPDATE_COUNT = 100;
+
+  var queue = [];
+  var activatedChildren = [];
+  var has = {};
+  var circular = {};
+  var waiting = false;
+  var flushing = false;
+  var index = 0;
+
+  /**
+   * Reset the scheduler's state.
+   */
+  function resetSchedulerState () {
+    index = queue.length = activatedChildren.length = 0;
+    has = {};
+    {
+      circular = {};
+    }
+    waiting = flushing = false;
+  }
+
+  // Async edge case #6566 requires saving the timestamp when event listeners are
+  // attached. However, calling performance.now() has a perf overhead especially
+  // if the page has thousands of event listeners. Instead, we take a timestamp
+  // every time the scheduler flushes and use that for all event listeners
+  // attached during that flush.
+  var currentFlushTimestamp = 0;
+
+  // Async edge case fix requires storing an event listener's attach timestamp.
+  var getNow = Date.now;
+
+  // Determine what event timestamp the browser is using. Annoyingly, the
+  // timestamp can either be hi-res (relative to page load) or low-res
+  // (relative to UNIX epoch), so in order to compare time we have to use the
+  // same timestamp type when saving the flush timestamp.
+  // All IE versions use low-res event timestamps, and have problematic clock
+  // implementations (#9632)
+  if (inBrowser && !isIE) {
+    var performance = window.performance;
+    if (
+      performance &&
+      typeof performance.now === 'function' &&
+      getNow() > document.createEvent('Event').timeStamp
+    ) {
+      // if the event timestamp, although evaluated AFTER the Date.now(), is
+      // smaller than it, it means the event is using a hi-res timestamp,
+      // and we need to use the hi-res version for event listener timestamps as
+      // well.
+      getNow = function () { return performance.now(); };
+    }
+  }
+
+  /**
+   * Flush both queues and run the watchers.
+   */
+  function flushSchedulerQueue () {
+    currentFlushTimestamp = getNow();
+    flushing = true;
+    var watcher, id;
+
+    // Sort queue before flush.
+    // This ensures that:
+    // 1. Components are updated from parent to child. (because parent is always
+    //    created before the child)
+    // 2. A component's user watchers are run before its render watcher (because
+    //    user watchers are created before the render watcher)
+    // 3. If a component is destroyed during a parent component's watcher run,
+    //    its watchers can be skipped.
+    queue.sort(function (a, b) { return a.id - b.id; });
+
+    // do not cache length because more watchers might be pushed
+    // as we run existing watchers
+    for (index = 0; index < queue.length; index++) {
+      watcher = queue[index];
+      if (watcher.before) {
+        watcher.before();
+      }
+      id = watcher.id;
+      has[id] = null;
+      watcher.run();
+      // in dev build, check and stop circular updates.
+      if (has[id] != null) {
+        circular[id] = (circular[id] || 0) + 1;
+        if (circular[id] > MAX_UPDATE_COUNT) {
+          warn(
+            'You may have an infinite update loop ' + (
+              watcher.user
+                ? ("in watcher with expression \"" + (watcher.expression) + "\"")
+                : "in a component render function."
+            ),
+            watcher.vm
+          );
+          break
+        }
+      }
+    }
+
+    // keep copies of post queues before resetting state
+    var activatedQueue = activatedChildren.slice();
+    var updatedQueue = queue.slice();
+
+    resetSchedulerState();
+
+    // call component updated and activated hooks
+    callActivatedHooks(activatedQueue);
+    callUpdatedHooks(updatedQueue);
+
+    // devtool hook
+    /* istanbul ignore if */
+    if (devtools && config.devtools) {
+      devtools.emit('flush');
+    }
+  }
+
+  function callUpdatedHooks (queue) {
+    var i = queue.length;
+    while (i--) {
+      var watcher = queue[i];
+      var vm = watcher.vm;
+      if (vm._watcher === watcher && vm._isMounted && !vm._isDestroyed) {
+        callHook(vm, 'updated');
+      }
+    }
+  }
+
+  /**
+   * Queue a kept-alive component that was activated during patch.
+   * The queue will be processed after the entire tree has been patched.
+   */
+  function queueActivatedComponent (vm) {
+    // setting _inactive to false here so that a render function can
+    // rely on checking whether it's in an inactive tree (e.g. router-view)
+    vm._inactive = false;
+    activatedChildren.push(vm);
+  }
+
+  function callActivatedHooks (queue) {
+    for (var i = 0; i < queue.length; i++) {
+      queue[i]._inactive = true;
+      activateChildComponent(queue[i], true /* true */);
+    }
+  }
+
+  /**
+   * Push a watcher into the watcher queue.
+   * Jobs with duplicate IDs will be skipped unless it's
+   * pushed when the queue is being flushed.
+   */
+  function queueWatcher (watcher) {
+    var id = watcher.id;
+    if (has[id] == null) {
+      has[id] = true;
+      if (!flushing) {
+        queue.push(watcher);
+      } else {
+        // if already flushing, splice the watcher based on its id
+        // if already past its id, it will be run next immediately.
+        var i = queue.length - 1;
+        while (i > index && queue[i].id > watcher.id) {
+          i--;
+        }
+        queue.splice(i + 1, 0, watcher);
+      }
+      // queue the flush
+      if (!waiting) {
+        waiting = true;
+
+        if (!config.async) {
+          flushSchedulerQueue();
+          return
+        }
+        nextTick(flushSchedulerQueue);
+      }
+    }
+  }
+
+  /*  */
+
+
+
+  var uid$2 = 0;
+
+  /**
+   * A watcher parses an expression, collects dependencies,
+   * and fires callback when the expression value changes.
+   * This is used for both the $watch() api and directives.
+   */
+  var Watcher = function Watcher (
+    vm,
+    expOrFn,
+    cb,
+    options,
+    isRenderWatcher
+  ) {
+    this.vm = vm;
+    if (isRenderWatcher) {
+      vm._watcher = this;
+    }
+    vm._watchers.push(this);
+    // options
+    if (options) {
+      this.deep = !!options.deep;
+      this.user = !!options.user;
+      this.lazy = !!options.lazy;
+      this.sync = !!options.sync;
+      this.before = options.before;
+    } else {
+      this.deep = this.user = this.lazy = this.sync = false;
+    }
+    this.cb = cb;
+    this.id = ++uid$2; // uid for batching
+    this.active = true;
+    this.dirty = this.lazy; // for lazy watchers
+    this.deps = [];
+    this.newDeps = [];
+    this.depIds = new _Set();
+    this.newDepIds = new _Set();
+    this.expression = expOrFn.toString();
+    // parse expression for getter
+    if (typeof expOrFn === 'function') {
+      this.getter = expOrFn;
+    } else {
+      this.getter = parsePath(expOrFn);
+      if (!this.getter) {
+        this.getter = noop;
+        warn(
+          "Failed watching path: \"" + expOrFn + "\" " +
+          'Watcher only accepts simple dot-delimited paths. ' +
+          'For full control, use a function instead.',
+          vm
+        );
+      }
+    }
+    this.value = this.lazy
+      ? undefined
+      : this.get();
+  };
+
+  /**
+   * Evaluate the getter, and re-collect dependencies.
+   */
+  Watcher.prototype.get = function get () {
+    pushTarget(this);
+    var value;
+    var vm = this.vm;
+    try {
+      value = this.getter.call(vm, vm);
+    } catch (e) {
+      if (this.user) {
+        handleError(e, vm, ("getter for watcher \"" + (this.expression) + "\""));
+      } else {
+        throw e
+      }
+    } finally {
+      // "touch" every property so they are all tracked as
+      // dependencies for deep watching
+      if (this.deep) {
+        traverse(value);
+      }
+      popTarget();
+      this.cleanupDeps();
+    }
+    return value
+  };
+
+  /**
+   * Add a dependency to this directive.
+   */
+  Watcher.prototype.addDep = function addDep (dep) {
+    var id = dep.id;
+    if (!this.newDepIds.has(id)) {
+      this.newDepIds.add(id);
+      this.newDeps.push(dep);
+      if (!this.depIds.has(id)) {
+        dep.addSub(this);
+      }
+    }
+  };
+
+  /**
+   * Clean up for dependency collection.
+   */
+  Watcher.prototype.cleanupDeps = function cleanupDeps () {
+    var i = this.deps.length;
+    while (i--) {
+      var dep = this.deps[i];
+      if (!this.newDepIds.has(dep.id)) {
+        dep.removeSub(this);
+      }
+    }
+    var tmp = this.depIds;
+    this.depIds = this.newDepIds;
+    this.newDepIds = tmp;
+    this.newDepIds.clear();
+    tmp = this.deps;
+    this.deps = this.newDeps;
+    this.newDeps = tmp;
+    this.newDeps.length = 0;
+  };
+
+  /**
+   * Subscriber interface.
+   * Will be called when a dependency changes.
+   */
+  Watcher.prototype.update = function update () {
+    /* istanbul ignore else */
+    if (this.lazy) {
+      this.dirty = true;
+    } else if (this.sync) {
+      this.run();
+    } else {
+      queueWatcher(this);
+    }
+  };
+
+  /**
+   * Scheduler job interface.
+   * Will be called by the scheduler.
+   */
+  Watcher.prototype.run = function run () {
+    if (this.active) {
+      var value = this.get();
+      if (
+        value !== this.value ||
+        // Deep watchers and watchers on Object/Arrays should fire even
+        // when the value is the same, because the value may
+        // have mutated.
+        isObject(value) ||
+        this.deep
+      ) {
+        // set new value
+        var oldValue = this.value;
+        this.value = value;
+        if (this.user) {
+          try {
+            this.cb.call(this.vm, value, oldValue);
+          } catch (e) {
+            handleError(e, this.vm, ("callback for watcher \"" + (this.expression) + "\""));
+          }
+        } else {
+          this.cb.call(this.vm, value, oldValue);
+        }
+      }
+    }
+  };
+
+  /**
+   * Evaluate the value of the watcher.
+   * This only gets called for lazy watchers.
+   */
+  Watcher.prototype.evaluate = function evaluate () {
+    this.value = this.get();
+    this.dirty = false;
+  };
+
+  /**
+   * Depend on all deps collected by this watcher.
+   */
+  Watcher.prototype.depend = function depend () {
+    var i = this.deps.length;
+    while (i--) {
+      this.deps[i].depend();
+    }
+  };
+
+  /**
+   * Remove self from all dependencies' subscriber list.
+   */
+  Watcher.prototype.teardown = function teardown () {
+    if (this.active) {
+      // remove self from vm's watcher list
+      // this is a somewhat expensive operation so we skip it
+      // if the vm is being destroyed.
+      if (!this.vm._isBeingDestroyed) {
+        remove(this.vm._watchers, this);
+      }
+      var i = this.deps.length;
+      while (i--) {
+        this.deps[i].removeSub(this);
+      }
+      this.active = false;
+    }
+  };
+
+  /*  */
+
+  var sharedPropertyDefinition = {
+    enumerable: true,
+    configurable: true,
+    get: noop,
+    set: noop
+  };
+
+  function proxy (target, sourceKey, key) {
+    sharedPropertyDefinition.get = function proxyGetter () {
+      return this[sourceKey][key]
+    };
+    sharedPropertyDefinition.set = function proxySetter (val) {
+      this[sourceKey][key] = val;
+    };
+    Object.defineProperty(target, key, sharedPropertyDefinition);
+  }
+
+  function initState (vm) {
+    vm._watchers = [];
+    var opts = vm.$options;
+    if (opts.props) { initProps(vm, opts.props); }
+    if (opts.methods) { initMethods(vm, opts.methods); }
+    if (opts.data) {
+      initData(vm);
+    } else {
+      observe(vm._data = {}, true /* asRootData */);
+    }
+    if (opts.computed) { initComputed(vm, opts.computed); }
+    if (opts.watch && opts.watch !== nativeWatch) {
+      initWatch(vm, opts.watch);
+    }
+  }
+
+  function initProps (vm, propsOptions) {
+    var propsData = vm.$options.propsData || {};
+    var props = vm._props = {};
+    // cache prop keys so that future props updates can iterate using Array
+    // instead of dynamic object key enumeration.
+    var keys = vm.$options._propKeys = [];
+    var isRoot = !vm.$parent;
+    // root instance props should be converted
+    if (!isRoot) {
+      toggleObserving(false);
+    }
+    var loop = function ( key ) {
+      keys.push(key);
+      var value = validateProp(key, propsOptions, propsData, vm);
+      /* istanbul ignore else */
+      {
+        var hyphenatedKey = hyphenate(key);
+        if (isReservedAttribute(hyphenatedKey) ||
+            config.isReservedAttr(hyphenatedKey)) {
+          warn(
+            ("\"" + hyphenatedKey + "\" is a reserved attribute and cannot be used as component prop."),
+            vm
+          );
+        }
+        defineReactive$$1(props, key, value, function () {
+          if (!isRoot && !isUpdatingChildComponent) {
+            warn(
+              "Avoid mutating a prop directly since the value will be " +
+              "overwritten whenever the parent component re-renders. " +
+              "Instead, use a data or computed property based on the prop's " +
+              "value. Prop being mutated: \"" + key + "\"",
+              vm
+            );
+          }
+        });
+      }
+      // static props are already proxied on the component's prototype
+      // during Vue.extend(). We only need to proxy props defined at
+      // instantiation here.
+      if (!(key in vm)) {
+        proxy(vm, "_props", key);
+      }
+    };
+
+    for (var key in propsOptions) loop( key );
+    toggleObserving(true);
+  }
+
+  function initData (vm) {
+    var data = vm.$options.data;
+    data = vm._data = typeof data === 'function'
+      ? getData(data, vm)
+      : data || {};
+    if (!isPlainObject(data)) {
+      data = {};
+      warn(
+        'data functions should return an object:\n' +
+        'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function',
+        vm
+      );
+    }
+    // proxy data on instance
+    var keys = Object.keys(data);
+    var props = vm.$options.props;
+    var methods = vm.$options.methods;
+    var i = keys.length;
+    while (i--) {
+      var key = keys[i];
+      {
+        if (methods && hasOwn(methods, key)) {
+          warn(
+            ("Method \"" + key + "\" has already been defined as a data property."),
+            vm
+          );
+        }
+      }
+      if (props && hasOwn(props, key)) {
+        warn(
+          "The data property \"" + key + "\" is already declared as a prop. " +
+          "Use prop default value instead.",
+          vm
+        );
+      } else if (!isReserved(key)) {
+        proxy(vm, "_data", key);
+      }
+    }
+    // observe data
+    observe(data, true /* asRootData */);
+  }
+
+  function getData (data, vm) {
+    // #7573 disable dep collection when invoking data getters
+    pushTarget();
+    try {
+      return data.call(vm, vm)
+    } catch (e) {
+      handleError(e, vm, "data()");
+      return {}
+    } finally {
+      popTarget();
+    }
+  }
+
+  var computedWatcherOptions = { lazy: true };
+
+  function initComputed (vm, computed) {
+    // $flow-disable-line
+    var watchers = vm._computedWatchers = Object.create(null);
+    // computed properties are just getters during SSR
+    var isSSR = isServerRendering();
+
+    for (var key in computed) {
+      var userDef = computed[key];
+      var getter = typeof userDef === 'function' ? userDef : userDef.get;
+      if (getter == null) {
+        warn(
+          ("Getter is missing for computed property \"" + key + "\"."),
+          vm
+        );
+      }
+
+      if (!isSSR) {
+        // create internal watcher for the computed property.
+        watchers[key] = new Watcher(
+          vm,
+          getter || noop,
+          noop,
+          computedWatcherOptions
+        );
+      }
+
+      // component-defined computed properties are already defined on the
+      // component prototype. We only need to define computed properties defined
+      // at instantiation here.
+      if (!(key in vm)) {
+        defineComputed(vm, key, userDef);
+      } else {
+        if (key in vm.$data) {
+          warn(("The computed property \"" + key + "\" is already defined in data."), vm);
+        } else if (vm.$options.props && key in vm.$options.props) {
+          warn(("The computed property \"" + key + "\" is already defined as a prop."), vm);
+        }
+      }
+    }
+  }
+
+  function defineComputed (
+    target,
+    key,
+    userDef
+  ) {
+    var shouldCache = !isServerRendering();
+    if (typeof userDef === 'function') {
+      sharedPropertyDefinition.get = shouldCache
+        ? createComputedGetter(key)
+        : createGetterInvoker(userDef);
+      sharedPropertyDefinition.set = noop;
+    } else {
+      sharedPropertyDefinition.get = userDef.get
+        ? shouldCache && userDef.cache !== false
+          ? createComputedGetter(key)
+          : createGetterInvoker(userDef.get)
+        : noop;
+      sharedPropertyDefinition.set = userDef.set || noop;
+    }
+    if (sharedPropertyDefinition.set === noop) {
+      sharedPropertyDefinition.set = function () {
+        warn(
+          ("Computed property \"" + key + "\" was assigned to but it has no setter."),
+          this
+        );
+      };
+    }
+    Object.defineProperty(target, key, sharedPropertyDefinition);
+  }
+
+  function createComputedGetter (key) {
+    return function computedGetter () {
+      var watcher = this._computedWatchers && this._computedWatchers[key];
+      if (watcher) {
+        if (watcher.dirty) {
+          watcher.evaluate();
+        }
+        if (Dep.target) {
+          watcher.depend();
+        }
+        return watcher.value
+      }
+    }
+  }
+
+  function createGetterInvoker(fn) {
+    return function computedGetter () {
+      return fn.call(this, this)
+    }
+  }
+
+  function initMethods (vm, methods) {
+    var props = vm.$options.props;
+    for (var key in methods) {
+      {
+        if (typeof methods[key] !== 'function') {
+          warn(
+            "Method \"" + key + "\" has type \"" + (typeof methods[key]) + "\" in the component definition. " +
+            "Did you reference the function correctly?",
+            vm
+          );
+        }
+        if (props && hasOwn(props, key)) {
+          warn(
+            ("Method \"" + key + "\" has already been defined as a prop."),
+            vm
+          );
+        }
+        if ((key in vm) && isReserved(key)) {
+          warn(
+            "Method \"" + key + "\" conflicts with an existing Vue instance method. " +
+            "Avoid defining component methods that start with _ or $."
+          );
+        }
+      }
+      vm[key] = typeof methods[key] !== 'function' ? noop : bind(methods[key], vm);
+    }
+  }
+
+  function initWatch (vm, watch) {
+    for (var key in watch) {
+      var handler = watch[key];
+      if (Array.isArray(handler)) {
+        for (var i = 0; i < handler.length; i++) {
+          createWatcher(vm, key, handler[i]);
+        }
+      } else {
+        createWatcher(vm, key, handler);
+      }
+    }
+  }
+
+  function createWatcher (
+    vm,
+    expOrFn,
+    handler,
+    options
+  ) {
+    if (isPlainObject(handler)) {
+      options = handler;
+      handler = handler.handler;
+    }
+    if (typeof handler === 'string') {
+      handler = vm[handler];
+    }
+    return vm.$watch(expOrFn, handler, options)
+  }
+
+  function stateMixin (Vue) {
+    // flow somehow has problems with directly declared definition object
+    // when using Object.defineProperty, so we have to procedurally build up
+    // the object here.
+    var dataDef = {};
+    dataDef.get = function () { return this._data };
+    var propsDef = {};
+    propsDef.get = function () { return this._props };
+    {
+      dataDef.set = function () {
+        warn(
+          'Avoid replacing instance root $data. ' +
+          'Use nested data properties instead.',
+          this
+        );
+      };
+      propsDef.set = function () {
+        warn("$props is readonly.", this);
+      };
+    }
+    Object.defineProperty(Vue.prototype, '$data', dataDef);
+    Object.defineProperty(Vue.prototype, '$props', propsDef);
+
+    Vue.prototype.$set = set;
+    Vue.prototype.$delete = del;
+
+    Vue.prototype.$watch = function (
+      expOrFn,
+      cb,
+      options
+    ) {
+      var vm = this;
+      if (isPlainObject(cb)) {
+        return createWatcher(vm, expOrFn, cb, options)
+      }
+      options = options || {};
+      options.user = true;
+      var watcher = new Watcher(vm, expOrFn, cb, options);
+      if (options.immediate) {
+        try {
+          cb.call(vm, watcher.value);
+        } catch (error) {
+          handleError(error, vm, ("callback for immediate watcher \"" + (watcher.expression) + "\""));
+        }
+      }
+      return function unwatchFn () {
+        watcher.teardown();
+      }
+    };
+  }
+
+  /*  */
+
+  var uid$3 = 0;
+
+  function initMixin (Vue) {
+    Vue.prototype._init = function (options) {
+      var vm = this;
+      // a uid
+      vm._uid = uid$3++;
+
+      var startTag, endTag;
+      /* istanbul ignore if */
+      if (config.performance && mark) {
+        startTag = "vue-perf-start:" + (vm._uid);
+        endTag = "vue-perf-end:" + (vm._uid);
+        mark(startTag);
+      }
+
+      // a flag to avoid this being observed
+      vm._isVue = true;
+      // merge options
+      if (options && options._isComponent) {
+        // optimize internal component instantiation
+        // since dynamic options merging is pretty slow, and none of the
+        // internal component options needs special treatment.
+        initInternalComponent(vm, options);
+      } else {
+        vm.$options = mergeOptions(
+          resolveConstructorOptions(vm.constructor),
+          options || {},
+          vm
+        );
+      }
+      /* istanbul ignore else */
+      {
+        initProxy(vm);
+      }
+      // expose real self
+      vm._self = vm;
+      initLifecycle(vm);
+      initEvents(vm);
+      initRender(vm);
+      callHook(vm, 'beforeCreate');
+      initInjections(vm); // resolve injections before data/props
+      initState(vm);
+      initProvide(vm); // resolve provide after data/props
+      callHook(vm, 'created');
+
+      /* istanbul ignore if */
+      if (config.performance && mark) {
+        vm._name = formatComponentName(vm, false);
+        mark(endTag);
+        measure(("vue " + (vm._name) + " init"), startTag, endTag);
+      }
+
+      if (vm.$options.el) {
+        vm.$mount(vm.$options.el);
+      }
+    };
+  }
+
+  function initInternalComponent (vm, options) {
+    var opts = vm.$options = Object.create(vm.constructor.options);
+    // doing this because it's faster than dynamic enumeration.
+    var parentVnode = options._parentVnode;
+    opts.parent = options.parent;
+    opts._parentVnode = parentVnode;
+
+    var vnodeComponentOptions = parentVnode.componentOptions;
+    opts.propsData = vnodeComponentOptions.propsData;
+    opts._parentListeners = vnodeComponentOptions.listeners;
+    opts._renderChildren = vnodeComponentOptions.children;
+    opts._componentTag = vnodeComponentOptions.tag;
+
+    if (options.render) {
+      opts.render = options.render;
+      opts.staticRenderFns = options.staticRenderFns;
+    }
+  }
+
+  function resolveConstructorOptions (Ctor) {
+    var options = Ctor.options;
+    if (Ctor.super) {
+      var superOptions = resolveConstructorOptions(Ctor.super);
+      var cachedSuperOptions = Ctor.superOptions;
+      if (superOptions !== cachedSuperOptions) {
+        // super option changed,
+        // need to resolve new options.
+        Ctor.superOptions = superOptions;
+        // check if there are any late-modified/attached options (#4976)
+        var modifiedOptions = resolveModifiedOptions(Ctor);
+        // update base extend options
+        if (modifiedOptions) {
+          extend(Ctor.extendOptions, modifiedOptions);
+        }
+        options = Ctor.options = mergeOptions(superOptions, Ctor.extendOptions);
+        if (options.name) {
+          options.components[options.name] = Ctor;
+        }
+      }
+    }
+    return options
+  }
+
+  function resolveModifiedOptions (Ctor) {
+    var modified;
+    var latest = Ctor.options;
+    var sealed = Ctor.sealedOptions;
+    for (var key in latest) {
+      if (latest[key] !== sealed[key]) {
+        if (!modified) { modified = {}; }
+        modified[key] = latest[key];
+      }
+    }
+    return modified
+  }
+
+  function Vue (options) {
+    if (!(this instanceof Vue)
+    ) {
+      warn('Vue is a constructor and should be called with the `new` keyword');
+    }
+    this._init(options);
+  }
+
+  initMixin(Vue);
+  stateMixin(Vue);
+  eventsMixin(Vue);
+  lifecycleMixin(Vue);
+  renderMixin(Vue);
+
+  /*  */
+
+  function initUse (Vue) {
+    Vue.use = function (plugin) {
+      var installedPlugins = (this._installedPlugins || (this._installedPlugins = []));
+      if (installedPlugins.indexOf(plugin) > -1) {
+        return this
+      }
+
+      // additional parameters
+      var args = toArray(arguments, 1);
+      args.unshift(this);
+      if (typeof plugin.install === 'function') {
+        plugin.install.apply(plugin, args);
+      } else if (typeof plugin === 'function') {
+        plugin.apply(null, args);
+      }
+      installedPlugins.push(plugin);
+      return this
+    };
+  }
+
+  /*  */
+
+  function initMixin$1 (Vue) {
+    Vue.mixin = function (mixin) {
+      this.options = mergeOptions(this.options, mixin);
+      return this
+    };
+  }
+
+  /*  */
+
+  function initExtend (Vue) {
+    /**
+     * Each instance constructor, including Vue, has a unique
+     * cid. This enables us to create wrapped "child
+     * constructors" for prototypal inheritance and cache them.
+     */
+    Vue.cid = 0;
+    var cid = 1;
+
+    /**
+     * Class inheritance
+     */
+    Vue.extend = function (extendOptions) {
+      extendOptions = extendOptions || {};
+      var Super = this;
+      var SuperId = Super.cid;
+      var cachedCtors = extendOptions._Ctor || (extendOptions._Ctor = {});
+      if (cachedCtors[SuperId]) {
+        return cachedCtors[SuperId]
+      }
+
+      var name = extendOptions.name || Super.options.name;
+      if (name) {
+        validateComponentName(name);
+      }
+
+      var Sub = function VueComponent (options) {
+        this._init(options);
+      };
+      Sub.prototype = Object.create(Super.prototype);
+      Sub.prototype.constructor = Sub;
+      Sub.cid = cid++;
+      Sub.options = mergeOptions(
+        Super.options,
+        extendOptions
+      );
+      Sub['super'] = Super;
+
+      // For props and computed properties, we define the proxy getters on
+      // the Vue instances at extension time, on the extended prototype. This
+      // avoids Object.defineProperty calls for each instance created.
+      if (Sub.options.props) {
+        initProps$1(Sub);
+      }
+      if (Sub.options.computed) {
+        initComputed$1(Sub);
+      }
+
+      // allow further extension/mixin/plugin usage
+      Sub.extend = Super.extend;
+      Sub.mixin = Super.mixin;
+      Sub.use = Super.use;
+
+      // create asset registers, so extended classes
+      // can have their private assets too.
+      ASSET_TYPES.forEach(function (type) {
+        Sub[type] = Super[type];
+      });
+      // enable recursive self-lookup
+      if (name) {
+        Sub.options.components[name] = Sub;
+      }
+
+      // keep a reference to the super options at extension time.
+      // later at instantiation we can check if Super's options have
+      // been updated.
+      Sub.superOptions = Super.options;
+      Sub.extendOptions = extendOptions;
+      Sub.sealedOptions = extend({}, Sub.options);
+
+      // cache constructor
+      cachedCtors[SuperId] = Sub;
+      return Sub
+    };
+  }
+
+  function initProps$1 (Comp) {
+    var props = Comp.options.props;
+    for (var key in props) {
+      proxy(Comp.prototype, "_props", key);
+    }
+  }
+
+  function initComputed$1 (Comp) {
+    var computed = Comp.options.computed;
+    for (var key in computed) {
+      defineComputed(Comp.prototype, key, computed[key]);
+    }
+  }
+
+  /*  */
+
+  function initAssetRegisters (Vue) {
+    /**
+     * Create asset registration methods.
+     */
+    ASSET_TYPES.forEach(function (type) {
+      Vue[type] = function (
+        id,
+        definition
+      ) {
+        if (!definition) {
+          return this.options[type + 's'][id]
+        } else {
+          /* istanbul ignore if */
+          if (type === 'component') {
+            validateComponentName(id);
+          }
+          if (type === 'component' && isPlainObject(definition)) {
+            definition.name = definition.name || id;
+            definition = this.options._base.extend(definition);
+          }
+          if (type === 'directive' && typeof definition === 'function') {
+            definition = { bind: definition, update: definition };
+          }
+          this.options[type + 's'][id] = definition;
+          return definition
+        }
+      };
+    });
+  }
+
+  /*  */
+
+
+
+  function getComponentName (opts) {
+    return opts && (opts.Ctor.options.name || opts.tag)
+  }
+
+  function matches (pattern, name) {
+    if (Array.isArray(pattern)) {
+      return pattern.indexOf(name) > -1
+    } else if (typeof pattern === 'string') {
+      return pattern.split(',').indexOf(name) > -1
+    } else if (isRegExp(pattern)) {
+      return pattern.test(name)
+    }
+    /* istanbul ignore next */
+    return false
+  }
+
+  function pruneCache (keepAliveInstance, filter) {
+    var cache = keepAliveInstance.cache;
+    var keys = keepAliveInstance.keys;
+    var _vnode = keepAliveInstance._vnode;
+    for (var key in cache) {
+      var cachedNode = cache[key];
+      if (cachedNode) {
+        var name = getComponentName(cachedNode.componentOptions);
+        if (name && !filter(name)) {
+          pruneCacheEntry(cache, key, keys, _vnode);
+        }
+      }
+    }
+  }
+
+  function pruneCacheEntry (
+    cache,
+    key,
+    keys,
+    current
+  ) {
+    var cached$$1 = cache[key];
+    if (cached$$1 && (!current || cached$$1.tag !== current.tag)) {
+      cached$$1.componentInstance.$destroy();
+    }
+    cache[key] = null;
+    remove(keys, key);
+  }
+
+  var patternTypes = [String, RegExp, Array];
+
+  var KeepAlive = {
+    name: 'keep-alive',
+    abstract: true,
+
+    props: {
+      include: patternTypes,
+      exclude: patternTypes,
+      max: [String, Number]
+    },
+
+    created: function created () {
+      this.cache = Object.create(null);
+      this.keys = [];
+    },
+
+    destroyed: function destroyed () {
+      for (var key in this.cache) {
+        pruneCacheEntry(this.cache, key, this.keys);
+      }
+    },
+
+    mounted: function mounted () {
+      var this$1 = this;
+
+      this.$watch('include', function (val) {
+        pruneCache(this$1, function (name) { return matches(val, name); });
+      });
+      this.$watch('exclude', function (val) {
+        pruneCache(this$1, function (name) { return !matches(val, name); });
+      });
+    },
+
+    render: function render () {
+      var slot = this.$slots.default;
+      var vnode = getFirstComponentChild(slot);
+      var componentOptions = vnode && vnode.componentOptions;
+      if (componentOptions) {
+        // check pattern
+        var name = getComponentName(componentOptions);
+        var ref = this;
+        var include = ref.include;
+        var exclude = ref.exclude;
+        if (
+          // not included
+          (include && (!name || !matches(include, name))) ||
+          // excluded
+          (exclude && name && matches(exclude, name))
+        ) {
+          return vnode
+        }
+
+        var ref$1 = this;
+        var cache = ref$1.cache;
+        var keys = ref$1.keys;
+        var key = vnode.key == null
+          // same constructor may get registered as different local components
+          // so cid alone is not enough (#3269)
+          ? componentOptions.Ctor.cid + (componentOptions.tag ? ("::" + (componentOptions.tag)) : '')
+          : vnode.key;
+        if (cache[key]) {
+          vnode.componentInstance = cache[key].componentInstance;
+          // make current key freshest
+          remove(keys, key);
+          keys.push(key);
+        } else {
+          cache[key] = vnode;
+          keys.push(key);
+          // prune oldest entry
+          if (this.max && keys.length > parseInt(this.max)) {
+            pruneCacheEntry(cache, keys[0], keys, this._vnode);
+          }
+        }
+
+        vnode.data.keepAlive = true;
+      }
+      return vnode || (slot && slot[0])
+    }
+  };
+
+  var builtInComponents = {
+    KeepAlive: KeepAlive
+  };
+
+  /*  */
+
+  function initGlobalAPI (Vue) {
+    // config
+    var configDef = {};
+    configDef.get = function () { return config; };
+    {
+      configDef.set = function () {
+        warn(
+          'Do not replace the Vue.config object, set individual fields instead.'
+        );
+      };
+    }
+    Object.defineProperty(Vue, 'config', configDef);
+
+    // exposed util methods.
+    // NOTE: these are not considered part of the public API - avoid relying on
+    // them unless you are aware of the risk.
+    Vue.util = {
+      warn: warn,
+      extend: extend,
+      mergeOptions: mergeOptions,
+      defineReactive: defineReactive$$1
+    };
+
+    Vue.set = set;
+    Vue.delete = del;
+    Vue.nextTick = nextTick;
+
+    // 2.6 explicit observable API
+    Vue.observable = function (obj) {
+      observe(obj);
+      return obj
+    };
+
+    Vue.options = Object.create(null);
+    ASSET_TYPES.forEach(function (type) {
+      Vue.options[type + 's'] = Object.create(null);
+    });
+
+    // this is used to identify the "base" constructor to extend all plain-object
+    // components with in Weex's multi-instance scenarios.
+    Vue.options._base = Vue;
+
+    extend(Vue.options.components, builtInComponents);
+
+    initUse(Vue);
+    initMixin$1(Vue);
+    initExtend(Vue);
+    initAssetRegisters(Vue);
+  }
+
+  initGlobalAPI(Vue);
+
+  Object.defineProperty(Vue.prototype, '$isServer', {
+    get: isServerRendering
+  });
+
+  Object.defineProperty(Vue.prototype, '$ssrContext', {
+    get: function get () {
+      /* istanbul ignore next */
+      return this.$vnode && this.$vnode.ssrContext
+    }
+  });
+
+  // expose FunctionalRenderContext for ssr runtime helper installation
+  Object.defineProperty(Vue, 'FunctionalRenderContext', {
+    value: FunctionalRenderContext
+  });
+
+  Vue.version = '2.6.12';
+
+  /*  */
+
+  // these are reserved for web because they are directly compiled away
+  // during template compilation
+  var isReservedAttr = makeMap('style,class');
+
+  // attributes that should be using props for binding
+  var acceptValue = makeMap('input,textarea,option,select,progress');
+  var mustUseProp = function (tag, type, attr) {
+    return (
+      (attr === 'value' && acceptValue(tag)) && type !== 'button' ||
+      (attr === 'selected' && tag === 'option') ||
+      (attr === 'checked' && tag === 'input') ||
+      (attr === 'muted' && tag === 'video')
+    )
+  };
+
+  var isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck');
+
+  var isValidContentEditableValue = makeMap('events,caret,typing,plaintext-only');
+
+  var convertEnumeratedValue = function (key, value) {
+    return isFalsyAttrValue(value) || value === 'false'
+      ? 'false'
+      // allow arbitrary string value for contenteditable
+      : key === 'contenteditable' && isValidContentEditableValue(value)
+        ? value
+        : 'true'
+  };
+
+  var isBooleanAttr = makeMap(
+    'allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' +
+    'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' +
+    'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' +
+    'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' +
+    'required,reversed,scoped,seamless,selected,sortable,translate,' +
+    'truespeed,typemustmatch,visible'
+  );
+
+  var xlinkNS = 'http://www.w3.org/1999/xlink';
+
+  var isXlink = function (name) {
+    return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink'
+  };
+
+  var getXlinkProp = function (name) {
+    return isXlink(name) ? name.slice(6, name.length) : ''
+  };
+
+  var isFalsyAttrValue = function (val) {
+    return val == null || val === false
+  };
+
+  /*  */
+
+  function genClassForVnode (vnode) {
+    var data = vnode.data;
+    var parentNode = vnode;
+    var childNode = vnode;
+    while (isDef(childNode.componentInstance)) {
+      childNode = childNode.componentInstance._vnode;
+      if (childNode && childNode.data) {
+        data = mergeClassData(childNode.data, data);
+      }
+    }
+    while (isDef(parentNode = parentNode.parent)) {
+      if (parentNode && parentNode.data) {
+        data = mergeClassData(data, parentNode.data);
+      }
+    }
+    return renderClass(data.staticClass, data.class)
+  }
+
+  function mergeClassData (child, parent) {
+    return {
+      staticClass: concat(child.staticClass, parent.staticClass),
+      class: isDef(child.class)
+        ? [child.class, parent.class]
+        : parent.class
+    }
+  }
+
+  function renderClass (
+    staticClass,
+    dynamicClass
+  ) {
+    if (isDef(staticClass) || isDef(dynamicClass)) {
+      return concat(staticClass, stringifyClass(dynamicClass))
+    }
+    /* istanbul ignore next */
+    return ''
+  }
+
+  function concat (a, b) {
+    return a ? b ? (a + ' ' + b) : a : (b || '')
+  }
+
+  function stringifyClass (value) {
+    if (Array.isArray(value)) {
+      return stringifyArray(value)
+    }
+    if (isObject(value)) {
+      return stringifyObject(value)
+    }
+    if (typeof value === 'string') {
+      return value
+    }
+    /* istanbul ignore next */
+    return ''
+  }
+
+  function stringifyArray (value) {
+    var res = '';
+    var stringified;
+    for (var i = 0, l = value.length; i < l; i++) {
+      if (isDef(stringified = stringifyClass(value[i])) && stringified !== '') {
+        if (res) { res += ' '; }
+        res += stringified;
+      }
+    }
+    return res
+  }
+
+  function stringifyObject (value) {
+    var res = '';
+    for (var key in value) {
+      if (value[key]) {
+        if (res) { res += ' '; }
+        res += key;
+      }
+    }
+    return res
+  }
+
+  /*  */
+
+  var namespaceMap = {
+    svg: 'http://www.w3.org/2000/svg',
+    math: 'http://www.w3.org/1998/Math/MathML'
+  };
+
+  var isHTMLTag = makeMap(
+    'html,body,base,head,link,meta,style,title,' +
+    'address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,' +
+    'div,dd,dl,dt,figcaption,figure,picture,hr,img,li,main,ol,p,pre,ul,' +
+    'a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,' +
+    's,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video,' +
+    'embed,object,param,source,canvas,script,noscript,del,ins,' +
+    'caption,col,colgroup,table,thead,tbody,td,th,tr,' +
+    'button,datalist,fieldset,form,input,label,legend,meter,optgroup,option,' +
+    'output,progress,select,textarea,' +
+    'details,dialog,menu,menuitem,summary,' +
+    'content,element,shadow,template,blockquote,iframe,tfoot'
+  );
+
+  // this map is intentionally selective, only covering SVG elements that may
+  // contain child elements.
+  var isSVG = makeMap(
+    'svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,font-face,' +
+    'foreignObject,g,glyph,image,line,marker,mask,missing-glyph,path,pattern,' +
+    'polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view',
+    true
+  );
+
+  var isPreTag = function (tag) { return tag === 'pre'; };
+
+  var isReservedTag = function (tag) {
+    return isHTMLTag(tag) || isSVG(tag)
+  };
+
+  function getTagNamespace (tag) {
+    if (isSVG(tag)) {
+      return 'svg'
+    }
+    // basic support for MathML
+    // note it doesn't support other MathML elements being component roots
+    if (tag === 'math') {
+      return 'math'
+    }
+  }
+
+  var unknownElementCache = Object.create(null);
+  function isUnknownElement (tag) {
+    /* istanbul ignore if */
+    if (!inBrowser) {
+      return true
+    }
+    if (isReservedTag(tag)) {
+      return false
+    }
+    tag = tag.toLowerCase();
+    /* istanbul ignore if */
+    if (unknownElementCache[tag] != null) {
+      return unknownElementCache[tag]
+    }
+    var el = document.createElement(tag);
+    if (tag.indexOf('-') > -1) {
+      // http://stackoverflow.com/a/28210364/1070244
+      return (unknownElementCache[tag] = (
+        el.constructor === window.HTMLUnknownElement ||
+        el.constructor === window.HTMLElement
+      ))
+    } else {
+      return (unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString()))
+    }
+  }
+
+  var isTextInputType = makeMap('text,number,password,search,email,tel,url');
+
+  /*  */
+
+  /**
+   * Query an element selector if it's not an element already.
+   */
+  function query (el) {
+    if (typeof el === 'string') {
+      var selected = document.querySelector(el);
+      if (!selected) {
+        warn(
+          'Cannot find element: ' + el
+        );
+        return document.createElement('div')
+      }
+      return selected
+    } else {
+      return el
+    }
+  }
+
+  /*  */
+
+  function createElement$1 (tagName, vnode) {
+    var elm = document.createElement(tagName);
+    if (tagName !== 'select') {
+      return elm
+    }
+    // false or null will remove the attribute but undefined will not
+    if (vnode.data && vnode.data.attrs && vnode.data.attrs.multiple !== undefined) {
+      elm.setAttribute('multiple', 'multiple');
+    }
+    return elm
+  }
+
+  function createElementNS (namespace, tagName) {
+    return document.createElementNS(namespaceMap[namespace], tagName)
+  }
+
+  function createTextNode (text) {
+    return document.createTextNode(text)
+  }
+
+  function createComment (text) {
+    return document.createComment(text)
+  }
+
+  function insertBefore (parentNode, newNode, referenceNode) {
+    parentNode.insertBefore(newNode, referenceNode);
+  }
+
+  function removeChild (node, child) {
+    node.removeChild(child);
+  }
+
+  function appendChild (node, child) {
+    node.appendChild(child);
+  }
+
+  function parentNode (node) {
+    return node.parentNode
+  }
+
+  function nextSibling (node) {
+    return node.nextSibling
+  }
+
+  function tagName (node) {
+    return node.tagName
+  }
+
+  function setTextContent (node, text) {
+    node.textContent = text;
+  }
+
+  function setStyleScope (node, scopeId) {
+    node.setAttribute(scopeId, '');
+  }
+
+  var nodeOps = /*#__PURE__*/Object.freeze({
+    createElement: createElement$1,
+    createElementNS: createElementNS,
+    createTextNode: createTextNode,
+    createComment: createComment,
+    insertBefore: insertBefore,
+    removeChild: removeChild,
+    appendChild: appendChild,
+    parentNode: parentNode,
+    nextSibling: nextSibling,
+    tagName: tagName,
+    setTextContent: setTextContent,
+    setStyleScope: setStyleScope
+  });
+
+  /*  */
+
+  var ref = {
+    create: function create (_, vnode) {
+      registerRef(vnode);
+    },
+    update: function update (oldVnode, vnode) {
+      if (oldVnode.data.ref !== vnode.data.ref) {
+        registerRef(oldVnode, true);
+        registerRef(vnode);
+      }
+    },
+    destroy: function destroy (vnode) {
+      registerRef(vnode, true);
+    }
+  };
+
+  function registerRef (vnode, isRemoval) {
+    var key = vnode.data.ref;
+    if (!isDef(key)) { return }
+
+    var vm = vnode.context;
+    var ref = vnode.componentInstance || vnode.elm;
+    var refs = vm.$refs;
+    if (isRemoval) {
+      if (Array.isArray(refs[key])) {
+        remove(refs[key], ref);
+      } else if (refs[key] === ref) {
+        refs[key] = undefined;
+      }
+    } else {
+      if (vnode.data.refInFor) {
+        if (!Array.isArray(refs[key])) {
+          refs[key] = [ref];
+        } else if (refs[key].indexOf(ref) < 0) {
+          // $flow-disable-line
+          refs[key].push(ref);
+        }
+      } else {
+        refs[key] = ref;
+      }
+    }
+  }
+
+  /**
+   * Virtual DOM patching algorithm based on Snabbdom by
+   * Simon Friis Vindum (@paldepind)
+   * Licensed under the MIT License
+   * https://github.com/paldepind/snabbdom/blob/master/LICENSE
+   *
+   * modified by Evan You (@yyx990803)
+   *
+   * Not type-checking this because this file is perf-critical and the cost
+   * of making flow understand it is not worth it.
+   */
+
+  var emptyNode = new VNode('', {}, []);
+
+  var hooks = ['create', 'activate', 'update', 'remove', 'destroy'];
+
+  function sameVnode (a, b) {
+    return (
+      a.key === b.key && (
+        (
+          a.tag === b.tag &&
+          a.isComment === b.isComment &&
+          isDef(a.data) === isDef(b.data) &&
+          sameInputType(a, b)
+        ) || (
+          isTrue(a.isAsyncPlaceholder) &&
+          a.asyncFactory === b.asyncFactory &&
+          isUndef(b.asyncFactory.error)
+        )
+      )
+    )
+  }
+
+  function sameInputType (a, b) {
+    if (a.tag !== 'input') { return true }
+    var i;
+    var typeA = isDef(i = a.data) && isDef(i = i.attrs) && i.type;
+    var typeB = isDef(i = b.data) && isDef(i = i.attrs) && i.type;
+    return typeA === typeB || isTextInputType(typeA) && isTextInputType(typeB)
+  }
+
+  function createKeyToOldIdx (children, beginIdx, endIdx) {
+    var i, key;
+    var map = {};
+    for (i = beginIdx; i <= endIdx; ++i) {
+      key = children[i].key;
+      if (isDef(key)) { map[key] = i; }
+    }
+    return map
+  }
+
+  function createPatchFunction (backend) {
+    var i, j;
+    var cbs = {};
+
+    var modules = backend.modules;
+    var nodeOps = backend.nodeOps;
+
+    for (i = 0; i < hooks.length; ++i) {
+      cbs[hooks[i]] = [];
+      for (j = 0; j < modules.length; ++j) {
+        if (isDef(modules[j][hooks[i]])) {
+          cbs[hooks[i]].push(modules[j][hooks[i]]);
+        }
+      }
+    }
+
+    function emptyNodeAt (elm) {
+      return new VNode(nodeOps.tagName(elm).toLowerCase(), {}, [], undefined, elm)
+    }
+
+    function createRmCb (childElm, listeners) {
+      function remove$$1 () {
+        if (--remove$$1.listeners === 0) {
+          removeNode(childElm);
+        }
+      }
+      remove$$1.listeners = listeners;
+      return remove$$1
+    }
+
+    function removeNode (el) {
+      var parent = nodeOps.parentNode(el);
+      // element may have already been removed due to v-html / v-text
+      if (isDef(parent)) {
+        nodeOps.removeChild(parent, el);
+      }
+    }
+
+    function isUnknownElement$$1 (vnode, inVPre) {
+      return (
+        !inVPre &&
+        !vnode.ns &&
+        !(
+          config.ignoredElements.length &&
+          config.ignoredElements.some(function (ignore) {
+            return isRegExp(ignore)
+              ? ignore.test(vnode.tag)
+              : ignore === vnode.tag
+          })
+        ) &&
+        config.isUnknownElement(vnode.tag)
+      )
+    }
+
+    var creatingElmInVPre = 0;
+
+    function createElm (
+      vnode,
+      insertedVnodeQueue,
+      parentElm,
+      refElm,
+      nested,
+      ownerArray,
+      index
+    ) {
+      if (isDef(vnode.elm) && isDef(ownerArray)) {
+        // This vnode was used in a previous render!
+        // now it's used as a new node, overwriting its elm would cause
+        // potential patch errors down the road when it's used as an insertion
+        // reference node. Instead, we clone the node on-demand before creating
+        // associated DOM element for it.
+        vnode = ownerArray[index] = cloneVNode(vnode);
+      }
+
+      vnode.isRootInsert = !nested; // for transition enter check
+      if (createComponent(vnode, insertedVnodeQueue, parentElm, refElm)) {
+        return
+      }
+
+      var data = vnode.data;
+      var children = vnode.children;
+      var tag = vnode.tag;
+      if (isDef(tag)) {
+        {
+          if (data && data.pre) {
+            creatingElmInVPre++;
+          }
+          if (isUnknownElement$$1(vnode, creatingElmInVPre)) {
+            warn(
+              'Unknown custom element: <' + tag + '> - did you ' +
+              'register the component correctly? For recursive components, ' +
+              'make sure to provide the "name" option.',
+              vnode.context
+            );
+          }
+        }
+
+        vnode.elm = vnode.ns
+          ? nodeOps.createElementNS(vnode.ns, tag)
+          : nodeOps.createElement(tag, vnode);
+        setScope(vnode);
+
+        /* istanbul ignore if */
+        {
+          createChildren(vnode, children, insertedVnodeQueue);
+          if (isDef(data)) {
+            invokeCreateHooks(vnode, insertedVnodeQueue);
+          }
+          insert(parentElm, vnode.elm, refElm);
+        }
+
+        if (data && data.pre) {
+          creatingElmInVPre--;
+        }
+      } else if (isTrue(vnode.isComment)) {
+        vnode.elm = nodeOps.createComment(vnode.text);
+        insert(parentElm, vnode.elm, refElm);
+      } else {
+        vnode.elm = nodeOps.createTextNode(vnode.text);
+        insert(parentElm, vnode.elm, refElm);
+      }
+    }
+
+    function createComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
+      var i = vnode.data;
+      if (isDef(i)) {
+        var isReactivated = isDef(vnode.componentInstance) && i.keepAlive;
+        if (isDef(i = i.hook) && isDef(i = i.init)) {
+          i(vnode, false /* hydrating */);
+        }
+        // after calling the init hook, if the vnode is a child component
+        // it should've created a child instance and mounted it. the child
+        // component also has set the placeholder vnode's elm.
+        // in that case we can just return the element and be done.
+        if (isDef(vnode.componentInstance)) {
+          initComponent(vnode, insertedVnodeQueue);
+          insert(parentElm, vnode.elm, refElm);
+          if (isTrue(isReactivated)) {
+            reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm);
+          }
+          return true
+        }
+      }
+    }
+
+    function initComponent (vnode, insertedVnodeQueue) {
+      if (isDef(vnode.data.pendingInsert)) {
+        insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert);
+        vnode.data.pendingInsert = null;
+      }
+      vnode.elm = vnode.componentInstance.$el;
+      if (isPatchable(vnode)) {
+        invokeCreateHooks(vnode, insertedVnodeQueue);
+        setScope(vnode);
+      } else {
+        // empty component root.
+        // skip all element-related modules except for ref (#3455)
+        registerRef(vnode);
+        // make sure to invoke the insert hook
+        insertedVnodeQueue.push(vnode);
+      }
+    }
+
+    function reactivateComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
+      var i;
+      // hack for #4339: a reactivated component with inner transition
+      // does not trigger because the inner node's created hooks are not called
+      // again. It's not ideal to involve module-specific logic in here but
+      // there doesn't seem to be a better way to do it.
+      var innerNode = vnode;
+      while (innerNode.componentInstance) {
+        innerNode = innerNode.componentInstance._vnode;
+        if (isDef(i = innerNode.data) && isDef(i = i.transition)) {
+          for (i = 0; i < cbs.activate.length; ++i) {
+            cbs.activate[i](emptyNode, innerNode);
+          }
+          insertedVnodeQueue.push(innerNode);
+          break
+        }
+      }
+      // unlike a newly created component,
+      // a reactivated keep-alive component doesn't insert itself
+      insert(parentElm, vnode.elm, refElm);
+    }
+
+    function insert (parent, elm, ref$$1) {
+      if (isDef(parent)) {
+        if (isDef(ref$$1)) {
+          if (nodeOps.parentNode(ref$$1) === parent) {
+            nodeOps.insertBefore(parent, elm, ref$$1);
+          }
+        } else {
+          nodeOps.appendChild(parent, elm);
+        }
+      }
+    }
+
+    function createChildren (vnode, children, insertedVnodeQueue) {
+      if (Array.isArray(children)) {
+        {
+          checkDuplicateKeys(children);
+        }
+        for (var i = 0; i < children.length; ++i) {
+          createElm(children[i], insertedVnodeQueue, vnode.elm, null, true, children, i);
+        }
+      } else if (isPrimitive(vnode.text)) {
+        nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(String(vnode.text)));
+      }
+    }
+
+    function isPatchable (vnode) {
+      while (vnode.componentInstance) {
+        vnode = vnode.componentInstance._vnode;
+      }
+      return isDef(vnode.tag)
+    }
+
+    function invokeCreateHooks (vnode, insertedVnodeQueue) {
+      for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
+        cbs.create[i$1](emptyNode, vnode);
+      }
+      i = vnode.data.hook; // Reuse variable
+      if (isDef(i)) {
+        if (isDef(i.create)) { i.create(emptyNode, vnode); }
+        if (isDef(i.insert)) { insertedVnodeQueue.push(vnode); }
+      }
+    }
+
+    // set scope id attribute for scoped CSS.
+    // this is implemented as a special case to avoid the overhead
+    // of going through the normal attribute patching process.
+    function setScope (vnode) {
+      var i;
+      if (isDef(i = vnode.fnScopeId)) {
+        nodeOps.setStyleScope(vnode.elm, i);
+      } else {
+        var ancestor = vnode;
+        while (ancestor) {
+          if (isDef(i = ancestor.context) && isDef(i = i.$options._scopeId)) {
+            nodeOps.setStyleScope(vnode.elm, i);
+          }
+          ancestor = ancestor.parent;
+        }
+      }
+      // for slot content they should also get the scopeId from the host instance.
+      if (isDef(i = activeInstance) &&
+        i !== vnode.context &&
+        i !== vnode.fnContext &&
+        isDef(i = i.$options._scopeId)
+      ) {
+        nodeOps.setStyleScope(vnode.elm, i);
+      }
+    }
+
+    function addVnodes (parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) {
+      for (; startIdx <= endIdx; ++startIdx) {
+        createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm, false, vnodes, startIdx);
+      }
+    }
+
+    function invokeDestroyHook (vnode) {
+      var i, j;
+      var data = vnode.data;
+      if (isDef(data)) {
+        if (isDef(i = data.hook) && isDef(i = i.destroy)) { i(vnode); }
+        for (i = 0; i < cbs.destroy.length; ++i) { cbs.destroy[i](vnode); }
+      }
+      if (isDef(i = vnode.children)) {
+        for (j = 0; j < vnode.children.length; ++j) {
+          invokeDestroyHook(vnode.children[j]);
+        }
+      }
+    }
+
+    function removeVnodes (vnodes, startIdx, endIdx) {
+      for (; startIdx <= endIdx; ++startIdx) {
+        var ch = vnodes[startIdx];
+        if (isDef(ch)) {
+          if (isDef(ch.tag)) {
+            removeAndInvokeRemoveHook(ch);
+            invokeDestroyHook(ch);
+          } else { // Text node
+            removeNode(ch.elm);
+          }
+        }
+      }
+    }
+
+    function removeAndInvokeRemoveHook (vnode, rm) {
+      if (isDef(rm) || isDef(vnode.data)) {
+        var i;
+        var listeners = cbs.remove.length + 1;
+        if (isDef(rm)) {
+          // we have a recursively passed down rm callback
+          // increase the listeners count
+          rm.listeners += listeners;
+        } else {
+          // directly removing
+          rm = createRmCb(vnode.elm, listeners);
+        }
+        // recursively invoke hooks on child component root node
+        if (isDef(i = vnode.componentInstance) && isDef(i = i._vnode) && isDef(i.data)) {
+          removeAndInvokeRemoveHook(i, rm);
+        }
+        for (i = 0; i < cbs.remove.length; ++i) {
+          cbs.remove[i](vnode, rm);
+        }
+        if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) {
+          i(vnode, rm);
+        } else {
+          rm();
+        }
+      } else {
+        removeNode(vnode.elm);
+      }
+    }
+
+    function updateChildren (parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) {
+      var oldStartIdx = 0;
+      var newStartIdx = 0;
+      var oldEndIdx = oldCh.length - 1;
+      var oldStartVnode = oldCh[0];
+      var oldEndVnode = oldCh[oldEndIdx];
+      var newEndIdx = newCh.length - 1;
+      var newStartVnode = newCh[0];
+      var newEndVnode = newCh[newEndIdx];
+      var oldKeyToIdx, idxInOld, vnodeToMove, refElm;
+
+      // removeOnly is a special flag used only by <transition-group>
+      // to ensure removed elements stay in correct relative positions
+      // during leaving transitions
+      var canMove = !removeOnly;
+
+      {
+        checkDuplicateKeys(newCh);
+      }
+
+      while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {
+        if (isUndef(oldStartVnode)) {
+          oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left
+        } else if (isUndef(oldEndVnode)) {
+          oldEndVnode = oldCh[--oldEndIdx];
+        } else if (sameVnode(oldStartVnode, newStartVnode)) {
+          patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
+          oldStartVnode = oldCh[++oldStartIdx];
+          newStartVnode = newCh[++newStartIdx];
+        } else if (sameVnode(oldEndVnode, newEndVnode)) {
+          patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
+          oldEndVnode = oldCh[--oldEndIdx];
+          newEndVnode = newCh[--newEndIdx];
+        } else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right
+          patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
+          canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm));
+          oldStartVnode = oldCh[++oldStartIdx];
+          newEndVnode = newCh[--newEndIdx];
+        } else if (sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left
+          patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
+          canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm);
+          oldEndVnode = oldCh[--oldEndIdx];
+          newStartVnode = newCh[++newStartIdx];
+        } else {
+          if (isUndef(oldKeyToIdx)) { oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx); }
+          idxInOld = isDef(newStartVnode.key)
+            ? oldKeyToIdx[newStartVnode.key]
+            : findIdxInOld(newStartVnode, oldCh, oldStartIdx, oldEndIdx);
+          if (isUndef(idxInOld)) { // New element
+            createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
+          } else {
+            vnodeToMove = oldCh[idxInOld];
+            if (sameVnode(vnodeToMove, newStartVnode)) {
+              patchVnode(vnodeToMove, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
+              oldCh[idxInOld] = undefined;
+              canMove && nodeOps.insertBefore(parentElm, vnodeToMove.elm, oldStartVnode.elm);
+            } else {
+              // same key but different element. treat as new element
+              createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
+            }
+          }
+          newStartVnode = newCh[++newStartIdx];
+        }
+      }
+      if (oldStartIdx > oldEndIdx) {
+        refElm = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
+        addVnodes(parentElm, refElm, newCh, newStartIdx, newEndIdx, insertedVnodeQueue);
+      } else if (newStartIdx > newEndIdx) {
+        removeVnodes(oldCh, oldStartIdx, oldEndIdx);
+      }
+    }
+
+    function checkDuplicateKeys (children) {
+      var seenKeys = {};
+      for (var i = 0; i < children.length; i++) {
+        var vnode = children[i];
+        var key = vnode.key;
+        if (isDef(key)) {
+          if (seenKeys[key]) {
+            warn(
+              ("Duplicate keys detected: '" + key + "'. This may cause an update error."),
+              vnode.context
+            );
+          } else {
+            seenKeys[key] = true;
+          }
+        }
+      }
+    }
+
+    function findIdxInOld (node, oldCh, start, end) {
+      for (var i = start; i < end; i++) {
+        var c = oldCh[i];
+        if (isDef(c) && sameVnode(node, c)) { return i }
+      }
+    }
+
+    function patchVnode (
+      oldVnode,
+      vnode,
+      insertedVnodeQueue,
+      ownerArray,
+      index,
+      removeOnly
+    ) {
+      if (oldVnode === vnode) {
+        return
+      }
+
+      if (isDef(vnode.elm) && isDef(ownerArray)) {
+        // clone reused vnode
+        vnode = ownerArray[index] = cloneVNode(vnode);
+      }
+
+      var elm = vnode.elm = oldVnode.elm;
+
+      if (isTrue(oldVnode.isAsyncPlaceholder)) {
+        if (isDef(vnode.asyncFactory.resolved)) {
+          hydrate(oldVnode.elm, vnode, insertedVnodeQueue);
+        } else {
+          vnode.isAsyncPlaceholder = true;
+        }
+        return
+      }
+
+      // reuse element for static trees.
+      // note we only do this if the vnode is cloned -
+      // if the new node is not cloned it means the render functions have been
+      // reset by the hot-reload-api and we need to do a proper re-render.
+      if (isTrue(vnode.isStatic) &&
+        isTrue(oldVnode.isStatic) &&
+        vnode.key === oldVnode.key &&
+        (isTrue(vnode.isCloned) || isTrue(vnode.isOnce))
+      ) {
+        vnode.componentInstance = oldVnode.componentInstance;
+        return
+      }
+
+      var i;
+      var data = vnode.data;
+      if (isDef(data) && isDef(i = data.hook) && isDef(i = i.prepatch)) {
+        i(oldVnode, vnode);
+      }
+
+      var oldCh = oldVnode.children;
+      var ch = vnode.children;
+      if (isDef(data) && isPatchable(vnode)) {
+        for (i = 0; i < cbs.update.length; ++i) { cbs.update[i](oldVnode, vnode); }
+        if (isDef(i = data.hook) && isDef(i = i.update)) { i(oldVnode, vnode); }
+      }
+      if (isUndef(vnode.text)) {
+        if (isDef(oldCh) && isDef(ch)) {
+          if (oldCh !== ch) { updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly); }
+        } else if (isDef(ch)) {
+          {
+            checkDuplicateKeys(ch);
+          }
+          if (isDef(oldVnode.text)) { nodeOps.setTextContent(elm, ''); }
+          addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue);
+        } else if (isDef(oldCh)) {
+          removeVnodes(oldCh, 0, oldCh.length - 1);
+        } else if (isDef(oldVnode.text)) {
+          nodeOps.setTextContent(elm, '');
+        }
+      } else if (oldVnode.text !== vnode.text) {
+        nodeOps.setTextContent(elm, vnode.text);
+      }
+      if (isDef(data)) {
+        if (isDef(i = data.hook) && isDef(i = i.postpatch)) { i(oldVnode, vnode); }
+      }
+    }
+
+    function invokeInsertHook (vnode, queue, initial) {
+      // delay insert hooks for component root nodes, invoke them after the
+      // element is really inserted
+      if (isTrue(initial) && isDef(vnode.parent)) {
+        vnode.parent.data.pendingInsert = queue;
+      } else {
+        for (var i = 0; i < queue.length; ++i) {
+          queue[i].data.hook.insert(queue[i]);
+        }
+      }
+    }
+
+    var hydrationBailed = false;
+    // list of modules that can skip create hook during hydration because they
+    // are already rendered on the client or has no need for initialization
+    // Note: style is excluded because it relies on initial clone for future
+    // deep updates (#7063).
+    var isRenderedModule = makeMap('attrs,class,staticClass,staticStyle,key');
+
+    // Note: this is a browser-only function so we can assume elms are DOM nodes.
+    function hydrate (elm, vnode, insertedVnodeQueue, inVPre) {
+      var i;
+      var tag = vnode.tag;
+      var data = vnode.data;
+      var children = vnode.children;
+      inVPre = inVPre || (data && data.pre);
+      vnode.elm = elm;
+
+      if (isTrue(vnode.isComment) && isDef(vnode.asyncFactory)) {
+        vnode.isAsyncPlaceholder = true;
+        return true
+      }
+      // assert node match
+      {
+        if (!assertNodeMatch(elm, vnode, inVPre)) {
+          return false
+        }
+      }
+      if (isDef(data)) {
+        if (isDef(i = data.hook) && isDef(i = i.init)) { i(vnode, true /* hydrating */); }
+        if (isDef(i = vnode.componentInstance)) {
+          // child component. it should have hydrated its own tree.
+          initComponent(vnode, insertedVnodeQueue);
+          return true
+        }
+      }
+      if (isDef(tag)) {
+        if (isDef(children)) {
+          // empty element, allow client to pick up and populate children
+          if (!elm.hasChildNodes()) {
+            createChildren(vnode, children, insertedVnodeQueue);
+          } else {
+            // v-html and domProps: innerHTML
+            if (isDef(i = data) && isDef(i = i.domProps) && isDef(i = i.innerHTML)) {
+              if (i !== elm.innerHTML) {
+                /* istanbul ignore if */
+                if (typeof console !== 'undefined' &&
+                  !hydrationBailed
+                ) {
+                  hydrationBailed = true;
+                  console.warn('Parent: ', elm);
+                  console.warn('server innerHTML: ', i);
+                  console.warn('client innerHTML: ', elm.innerHTML);
+                }
+                return false
+              }
+            } else {
+              // iterate and compare children lists
+              var childrenMatch = true;
+              var childNode = elm.firstChild;
+              for (var i$1 = 0; i$1 < children.length; i$1++) {
+                if (!childNode || !hydrate(childNode, children[i$1], insertedVnodeQueue, inVPre)) {
+                  childrenMatch = false;
+                  break
+                }
+                childNode = childNode.nextSibling;
+              }
+              // if childNode is not null, it means the actual childNodes list is
+              // longer than the virtual children list.
+              if (!childrenMatch || childNode) {
+                /* istanbul ignore if */
+                if (typeof console !== 'undefined' &&
+                  !hydrationBailed
+                ) {
+                  hydrationBailed = true;
+                  console.warn('Parent: ', elm);
+                  console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children);
+                }
+                return false
+              }
+            }
+          }
+        }
+        if (isDef(data)) {
+          var fullInvoke = false;
+          for (var key in data) {
+            if (!isRenderedModule(key)) {
+              fullInvoke = true;
+              invokeCreateHooks(vnode, insertedVnodeQueue);
+              break
+            }
+          }
+          if (!fullInvoke && data['class']) {
+            // ensure collecting deps for deep class bindings for future updates
+            traverse(data['class']);
+          }
+        }
+      } else if (elm.data !== vnode.text) {
+        elm.data = vnode.text;
+      }
+      return true
+    }
+
+    function assertNodeMatch (node, vnode, inVPre) {
+      if (isDef(vnode.tag)) {
+        return vnode.tag.indexOf('vue-component') === 0 || (
+          !isUnknownElement$$1(vnode, inVPre) &&
+          vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase())
+        )
+      } else {
+        return node.nodeType === (vnode.isComment ? 8 : 3)
+      }
+    }
+
+    return function patch (oldVnode, vnode, hydrating, removeOnly) {
+      if (isUndef(vnode)) {
+        if (isDef(oldVnode)) { invokeDestroyHook(oldVnode); }
+        return
+      }
+
+      var isInitialPatch = false;
+      var insertedVnodeQueue = [];
+
+      if (isUndef(oldVnode)) {
+        // empty mount (likely as component), create new root element
+        isInitialPatch = true;
+        createElm(vnode, insertedVnodeQueue);
+      } else {
+        var isRealElement = isDef(oldVnode.nodeType);
+        if (!isRealElement && sameVnode(oldVnode, vnode)) {
+          // patch existing root node
+          patchVnode(oldVnode, vnode, insertedVnodeQueue, null, null, removeOnly);
+        } else {
+          if (isRealElement) {
+            // mounting to a real element
+            // check if this is server-rendered content and if we can perform
+            // a successful hydration.
+            if (oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) {
+              oldVnode.removeAttribute(SSR_ATTR);
+              hydrating = true;
+            }
+            if (isTrue(hydrating)) {
+              if (hydrate(oldVnode, vnode, insertedVnodeQueue)) {
+                invokeInsertHook(vnode, insertedVnodeQueue, true);
+                return oldVnode
+              } else {
+                warn(
+                  'The client-side rendered virtual DOM tree is not matching ' +
+                  'server-rendered content. This is likely caused by incorrect ' +
+                  'HTML markup, for example nesting block-level elements inside ' +
+                  '<p>, or missing <tbody>. Bailing hydration and performing ' +
+                  'full client-side render.'
+                );
+              }
+            }
+            // either not server-rendered, or hydration failed.
+            // create an empty node and replace it
+            oldVnode = emptyNodeAt(oldVnode);
+          }
+
+          // replacing existing element
+          var oldElm = oldVnode.elm;
+          var parentElm = nodeOps.parentNode(oldElm);
+
+          // create new node
+          createElm(
+            vnode,
+            insertedVnodeQueue,
+            // extremely rare edge case: do not insert if old element is in a
+            // leaving transition. Only happens when combining transition +
+            // keep-alive + HOCs. (#4590)
+            oldElm._leaveCb ? null : parentElm,
+            nodeOps.nextSibling(oldElm)
+          );
+
+          // update parent placeholder node element, recursively
+          if (isDef(vnode.parent)) {
+            var ancestor = vnode.parent;
+            var patchable = isPatchable(vnode);
+            while (ancestor) {
+              for (var i = 0; i < cbs.destroy.length; ++i) {
+                cbs.destroy[i](ancestor);
+              }
+              ancestor.elm = vnode.elm;
+              if (patchable) {
+                for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
+                  cbs.create[i$1](emptyNode, ancestor);
+                }
+                // #6513
+                // invoke insert hooks that may have been merged by create hooks.
+                // e.g. for directives that uses the "inserted" hook.
+                var insert = ancestor.data.hook.insert;
+                if (insert.merged) {
+                  // start at index 1 to avoid re-invoking component mounted hook
+                  for (var i$2 = 1; i$2 < insert.fns.length; i$2++) {
+                    insert.fns[i$2]();
+                  }
+                }
+              } else {
+                registerRef(ancestor);
+              }
+              ancestor = ancestor.parent;
+            }
+          }
+
+          // destroy old node
+          if (isDef(parentElm)) {
+            removeVnodes([oldVnode], 0, 0);
+          } else if (isDef(oldVnode.tag)) {
+            invokeDestroyHook(oldVnode);
+          }
+        }
+      }
+
+      invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch);
+      return vnode.elm
+    }
+  }
+
+  /*  */
+
+  var directives = {
+    create: updateDirectives,
+    update: updateDirectives,
+    destroy: function unbindDirectives (vnode) {
+      updateDirectives(vnode, emptyNode);
+    }
+  };
+
+  function updateDirectives (oldVnode, vnode) {
+    if (oldVnode.data.directives || vnode.data.directives) {
+      _update(oldVnode, vnode);
+    }
+  }
+
+  function _update (oldVnode, vnode) {
+    var isCreate = oldVnode === emptyNode;
+    var isDestroy = vnode === emptyNode;
+    var oldDirs = normalizeDirectives$1(oldVnode.data.directives, oldVnode.context);
+    var newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context);
+
+    var dirsWithInsert = [];
+    var dirsWithPostpatch = [];
+
+    var key, oldDir, dir;
+    for (key in newDirs) {
+      oldDir = oldDirs[key];
+      dir = newDirs[key];
+      if (!oldDir) {
+        // new directive, bind
+        callHook$1(dir, 'bind', vnode, oldVnode);
+        if (dir.def && dir.def.inserted) {
+          dirsWithInsert.push(dir);
+        }
+      } else {
+        // existing directive, update
+        dir.oldValue = oldDir.value;
+        dir.oldArg = oldDir.arg;
+        callHook$1(dir, 'update', vnode, oldVnode);
+        if (dir.def && dir.def.componentUpdated) {
+          dirsWithPostpatch.push(dir);
+        }
+      }
+    }
+
+    if (dirsWithInsert.length) {
+      var callInsert = function () {
+        for (var i = 0; i < dirsWithInsert.length; i++) {
+          callHook$1(dirsWithInsert[i], 'inserted', vnode, oldVnode);
+        }
+      };
+      if (isCreate) {
+        mergeVNodeHook(vnode, 'insert', callInsert);
+      } else {
+        callInsert();
+      }
+    }
+
+    if (dirsWithPostpatch.length) {
+      mergeVNodeHook(vnode, 'postpatch', function () {
+        for (var i = 0; i < dirsWithPostpatch.length; i++) {
+          callHook$1(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode);
+        }
+      });
+    }
+
+    if (!isCreate) {
+      for (key in oldDirs) {
+        if (!newDirs[key]) {
+          // no longer present, unbind
+          callHook$1(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy);
+        }
+      }
+    }
+  }
+
+  var emptyModifiers = Object.create(null);
+
+  function normalizeDirectives$1 (
+    dirs,
+    vm
+  ) {
+    var res = Object.create(null);
+    if (!dirs) {
+      // $flow-disable-line
+      return res
+    }
+    var i, dir;
+    for (i = 0; i < dirs.length; i++) {
+      dir = dirs[i];
+      if (!dir.modifiers) {
+        // $flow-disable-line
+        dir.modifiers = emptyModifiers;
+      }
+      res[getRawDirName(dir)] = dir;
+      dir.def = resolveAsset(vm.$options, 'directives', dir.name, true);
+    }
+    // $flow-disable-line
+    return res
+  }
+
+  function getRawDirName (dir) {
+    return dir.rawName || ((dir.name) + "." + (Object.keys(dir.modifiers || {}).join('.')))
+  }
+
+  function callHook$1 (dir, hook, vnode, oldVnode, isDestroy) {
+    var fn = dir.def && dir.def[hook];
+    if (fn) {
+      try {
+        fn(vnode.elm, dir, vnode, oldVnode, isDestroy);
+      } catch (e) {
+        handleError(e, vnode.context, ("directive " + (dir.name) + " " + hook + " hook"));
+      }
+    }
+  }
+
+  var baseModules = [
+    ref,
+    directives
+  ];
+
+  /*  */
+
+  function updateAttrs (oldVnode, vnode) {
+    var opts = vnode.componentOptions;
+    if (isDef(opts) && opts.Ctor.options.inheritAttrs === false) {
+      return
+    }
+    if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {
+      return
+    }
+    var key, cur, old;
+    var elm = vnode.elm;
+    var oldAttrs = oldVnode.data.attrs || {};
+    var attrs = vnode.data.attrs || {};
+    // clone observed objects, as the user probably wants to mutate it
+    if (isDef(attrs.__ob__)) {
+      attrs = vnode.data.attrs = extend({}, attrs);
+    }
+
+    for (key in attrs) {
+      cur = attrs[key];
+      old = oldAttrs[key];
+      if (old !== cur) {
+        setAttr(elm, key, cur);
+      }
+    }
+    // #4391: in IE9, setting type can reset value for input[type=radio]
+    // #6666: IE/Edge forces progress value down to 1 before setting a max
+    /* istanbul ignore if */
+    if ((isIE || isEdge) && attrs.value !== oldAttrs.value) {
+      setAttr(elm, 'value', attrs.value);
+    }
+    for (key in oldAttrs) {
+      if (isUndef(attrs[key])) {
+        if (isXlink(key)) {
+          elm.removeAttributeNS(xlinkNS, getXlinkProp(key));
+        } else if (!isEnumeratedAttr(key)) {
+          elm.removeAttribute(key);
+        }
+      }
+    }
+  }
+
+  function setAttr (el, key, value) {
+    if (el.tagName.indexOf('-') > -1) {
+      baseSetAttr(el, key, value);
+    } else if (isBooleanAttr(key)) {
+      // set attribute for blank value
+      // e.g. <option disabled>Select one</option>
+      if (isFalsyAttrValue(value)) {
+        el.removeAttribute(key);
+      } else {
+        // technically allowfullscreen is a boolean attribute for <iframe>,
+        // but Flash expects a value of "true" when used on <embed> tag
+        value = key === 'allowfullscreen' && el.tagName === 'EMBED'
+          ? 'true'
+          : key;
+        el.setAttribute(key, value);
+      }
+    } else if (isEnumeratedAttr(key)) {
+      el.setAttribute(key, convertEnumeratedValue(key, value));
+    } else if (isXlink(key)) {
+      if (isFalsyAttrValue(value)) {
+        el.removeAttributeNS(xlinkNS, getXlinkProp(key));
+      } else {
+        el.setAttributeNS(xlinkNS, key, value);
+      }
+    } else {
+      baseSetAttr(el, key, value);
+    }
+  }
+
+  function baseSetAttr (el, key, value) {
+    if (isFalsyAttrValue(value)) {
+      el.removeAttribute(key);
+    } else {
+      // #7138: IE10 & 11 fires input event when setting placeholder on
+      // <textarea>... block the first input event and remove the blocker
+      // immediately.
+      /* istanbul ignore if */
+      if (
+        isIE && !isIE9 &&
+        el.tagName === 'TEXTAREA' &&
+        key === 'placeholder' && value !== '' && !el.__ieph
+      ) {
+        var blocker = function (e) {
+          e.stopImmediatePropagation();
+          el.removeEventListener('input', blocker);
+        };
+        el.addEventListener('input', blocker);
+        // $flow-disable-line
+        el.__ieph = true; /* IE placeholder patched */
+      }
+      el.setAttribute(key, value);
+    }
+  }
+
+  var attrs = {
+    create: updateAttrs,
+    update: updateAttrs
+  };
+
+  /*  */
+
+  function updateClass (oldVnode, vnode) {
+    var el = vnode.elm;
+    var data = vnode.data;
+    var oldData = oldVnode.data;
+    if (
+      isUndef(data.staticClass) &&
+      isUndef(data.class) && (
+        isUndef(oldData) || (
+          isUndef(oldData.staticClass) &&
+          isUndef(oldData.class)
+        )
+      )
+    ) {
+      return
+    }
+
+    var cls = genClassForVnode(vnode);
+
+    // handle transition classes
+    var transitionClass = el._transitionClasses;
+    if (isDef(transitionClass)) {
+      cls = concat(cls, stringifyClass(transitionClass));
+    }
+
+    // set the class
+    if (cls !== el._prevClass) {
+      el.setAttribute('class', cls);
+      el._prevClass = cls;
+    }
+  }
+
+  var klass = {
+    create: updateClass,
+    update: updateClass
+  };
+
+  /*  */
+
+  var validDivisionCharRE = /[\w).+\-_$\]]/;
+
+  function parseFilters (exp) {
+    var inSingle = false;
+    var inDouble = false;
+    var inTemplateString = false;
+    var inRegex = false;
+    var curly = 0;
+    var square = 0;
+    var paren = 0;
+    var lastFilterIndex = 0;
+    var c, prev, i, expression, filters;
+
+    for (i = 0; i < exp.length; i++) {
+      prev = c;
+      c = exp.charCodeAt(i);
+      if (inSingle) {
+        if (c === 0x27 && prev !== 0x5C) { inSingle = false; }
+      } else if (inDouble) {
+        if (c === 0x22 && prev !== 0x5C) { inDouble = false; }
+      } else if (inTemplateString) {
+        if (c === 0x60 && prev !== 0x5C) { inTemplateString = false; }
+      } else if (inRegex) {
+        if (c === 0x2f && prev !== 0x5C) { inRegex = false; }
+      } else if (
+        c === 0x7C && // pipe
+        exp.charCodeAt(i + 1) !== 0x7C &&
+        exp.charCodeAt(i - 1) !== 0x7C &&
+        !curly && !square && !paren
+      ) {
+        if (expression === undefined) {
+          // first filter, end of expression
+          lastFilterIndex = i + 1;
+          expression = exp.slice(0, i).trim();
+        } else {
+          pushFilter();
+        }
+      } else {
+        switch (c) {
+          case 0x22: inDouble = true; break         // "
+          case 0x27: inSingle = true; break         // '
+          case 0x60: inTemplateString = true; break // `
+          case 0x28: paren++; break                 // (
+          case 0x29: paren--; break                 // )
+          case 0x5B: square++; break                // [
+          case 0x5D: square--; break                // ]
+          case 0x7B: curly++; break                 // {
+          case 0x7D: curly--; break                 // }
+        }
+        if (c === 0x2f) { // /
+          var j = i - 1;
+          var p = (void 0);
+          // find first non-whitespace prev char
+          for (; j >= 0; j--) {
+            p = exp.charAt(j);
+            if (p !== ' ') { break }
+          }
+          if (!p || !validDivisionCharRE.test(p)) {
+            inRegex = true;
+          }
+        }
+      }
+    }
+
+    if (expression === undefined) {
+      expression = exp.slice(0, i).trim();
+    } else if (lastFilterIndex !== 0) {
+      pushFilter();
+    }
+
+    function pushFilter () {
+      (filters || (filters = [])).push(exp.slice(lastFilterIndex, i).trim());
+      lastFilterIndex = i + 1;
+    }
+
+    if (filters) {
+      for (i = 0; i < filters.length; i++) {
+        expression = wrapFilter(expression, filters[i]);
+      }
+    }
+
+    return expression
+  }
+
+  function wrapFilter (exp, filter) {
+    var i = filter.indexOf('(');
+    if (i < 0) {
+      // _f: resolveFilter
+      return ("_f(\"" + filter + "\")(" + exp + ")")
+    } else {
+      var name = filter.slice(0, i);
+      var args = filter.slice(i + 1);
+      return ("_f(\"" + name + "\")(" + exp + (args !== ')' ? ',' + args : args))
+    }
+  }
+
+  /*  */
+
+
+
+  /* eslint-disable no-unused-vars */
+  function baseWarn (msg, range) {
+    console.error(("[Vue compiler]: " + msg));
+  }
+  /* eslint-enable no-unused-vars */
+
+  function pluckModuleFunction (
+    modules,
+    key
+  ) {
+    return modules
+      ? modules.map(function (m) { return m[key]; }).filter(function (_) { return _; })
+      : []
+  }
+
+  function addProp (el, name, value, range, dynamic) {
+    (el.props || (el.props = [])).push(rangeSetItem({ name: name, value: value, dynamic: dynamic }, range));
+    el.plain = false;
+  }
+
+  function addAttr (el, name, value, range, dynamic) {
+    var attrs = dynamic
+      ? (el.dynamicAttrs || (el.dynamicAttrs = []))
+      : (el.attrs || (el.attrs = []));
+    attrs.push(rangeSetItem({ name: name, value: value, dynamic: dynamic }, range));
+    el.plain = false;
+  }
+
+  // add a raw attr (use this in preTransforms)
+  function addRawAttr (el, name, value, range) {
+    el.attrsMap[name] = value;
+    el.attrsList.push(rangeSetItem({ name: name, value: value }, range));
+  }
+
+  function addDirective (
+    el,
+    name,
+    rawName,
+    value,
+    arg,
+    isDynamicArg,
+    modifiers,
+    range
+  ) {
+    (el.directives || (el.directives = [])).push(rangeSetItem({
+      name: name,
+      rawName: rawName,
+      value: value,
+      arg: arg,
+      isDynamicArg: isDynamicArg,
+      modifiers: modifiers
+    }, range));
+    el.plain = false;
+  }
+
+  function prependModifierMarker (symbol, name, dynamic) {
+    return dynamic
+      ? ("_p(" + name + ",\"" + symbol + "\")")
+      : symbol + name // mark the event as captured
+  }
+
+  function addHandler (
+    el,
+    name,
+    value,
+    modifiers,
+    important,
+    warn,
+    range,
+    dynamic
+  ) {
+    modifiers = modifiers || emptyObject;
+    // warn prevent and passive modifier
+    /* istanbul ignore if */
+    if (
+      warn &&
+      modifiers.prevent && modifiers.passive
+    ) {
+      warn(
+        'passive and prevent can\'t be used together. ' +
+        'Passive handler can\'t prevent default event.',
+        range
+      );
+    }
+
+    // normalize click.right and click.middle since they don't actually fire
+    // this is technically browser-specific, but at least for now browsers are
+    // the only target envs that have right/middle clicks.
+    if (modifiers.right) {
+      if (dynamic) {
+        name = "(" + name + ")==='click'?'contextmenu':(" + name + ")";
+      } else if (name === 'click') {
+        name = 'contextmenu';
+        delete modifiers.right;
+      }
+    } else if (modifiers.middle) {
+      if (dynamic) {
+        name = "(" + name + ")==='click'?'mouseup':(" + name + ")";
+      } else if (name === 'click') {
+        name = 'mouseup';
+      }
+    }
+
+    // check capture modifier
+    if (modifiers.capture) {
+      delete modifiers.capture;
+      name = prependModifierMarker('!', name, dynamic);
+    }
+    if (modifiers.once) {
+      delete modifiers.once;
+      name = prependModifierMarker('~', name, dynamic);
+    }
+    /* istanbul ignore if */
+    if (modifiers.passive) {
+      delete modifiers.passive;
+      name = prependModifierMarker('&', name, dynamic);
+    }
+
+    var events;
+    if (modifiers.native) {
+      delete modifiers.native;
+      events = el.nativeEvents || (el.nativeEvents = {});
+    } else {
+      events = el.events || (el.events = {});
+    }
+
+    var newHandler = rangeSetItem({ value: value.trim(), dynamic: dynamic }, range);
+    if (modifiers !== emptyObject) {
+      newHandler.modifiers = modifiers;
+    }
+
+    var handlers = events[name];
+    /* istanbul ignore if */
+    if (Array.isArray(handlers)) {
+      important ? handlers.unshift(newHandler) : handlers.push(newHandler);
+    } else if (handlers) {
+      events[name] = important ? [newHandler, handlers] : [handlers, newHandler];
+    } else {
+      events[name] = newHandler;
+    }
+
+    el.plain = false;
+  }
+
+  function getRawBindingAttr (
+    el,
+    name
+  ) {
+    return el.rawAttrsMap[':' + name] ||
+      el.rawAttrsMap['v-bind:' + name] ||
+      el.rawAttrsMap[name]
+  }
+
+  function getBindingAttr (
+    el,
+    name,
+    getStatic
+  ) {
+    var dynamicValue =
+      getAndRemoveAttr(el, ':' + name) ||
+      getAndRemoveAttr(el, 'v-bind:' + name);
+    if (dynamicValue != null) {
+      return parseFilters(dynamicValue)
+    } else if (getStatic !== false) {
+      var staticValue = getAndRemoveAttr(el, name);
+      if (staticValue != null) {
+        return JSON.stringify(staticValue)
+      }
+    }
+  }
+
+  // note: this only removes the attr from the Array (attrsList) so that it
+  // doesn't get processed by processAttrs.
+  // By default it does NOT remove it from the map (attrsMap) because the map is
+  // needed during codegen.
+  function getAndRemoveAttr (
+    el,
+    name,
+    removeFromMap
+  ) {
+    var val;
+    if ((val = el.attrsMap[name]) != null) {
+      var list = el.attrsList;
+      for (var i = 0, l = list.length; i < l; i++) {
+        if (list[i].name === name) {
+          list.splice(i, 1);
+          break
+        }
+      }
+    }
+    if (removeFromMap) {
+      delete el.attrsMap[name];
+    }
+    return val
+  }
+
+  function getAndRemoveAttrByRegex (
+    el,
+    name
+  ) {
+    var list = el.attrsList;
+    for (var i = 0, l = list.length; i < l; i++) {
+      var attr = list[i];
+      if (name.test(attr.name)) {
+        list.splice(i, 1);
+        return attr
+      }
+    }
+  }
+
+  function rangeSetItem (
+    item,
+    range
+  ) {
+    if (range) {
+      if (range.start != null) {
+        item.start = range.start;
+      }
+      if (range.end != null) {
+        item.end = range.end;
+      }
+    }
+    return item
+  }
+
+  /*  */
+
+  /**
+   * Cross-platform code generation for component v-model
+   */
+  function genComponentModel (
+    el,
+    value,
+    modifiers
+  ) {
+    var ref = modifiers || {};
+    var number = ref.number;
+    var trim = ref.trim;
+
+    var baseValueExpression = '$$v';
+    var valueExpression = baseValueExpression;
+    if (trim) {
+      valueExpression =
+        "(typeof " + baseValueExpression + " === 'string'" +
+        "? " + baseValueExpression + ".trim()" +
+        ": " + baseValueExpression + ")";
+    }
+    if (number) {
+      valueExpression = "_n(" + valueExpression + ")";
+    }
+    var assignment = genAssignmentCode(value, valueExpression);
+
+    el.model = {
+      value: ("(" + value + ")"),
+      expression: JSON.stringify(value),
+      callback: ("function (" + baseValueExpression + ") {" + assignment + "}")
+    };
+  }
+
+  /**
+   * Cross-platform codegen helper for generating v-model value assignment code.
+   */
+  function genAssignmentCode (
+    value,
+    assignment
+  ) {
+    var res = parseModel(value);
+    if (res.key === null) {
+      return (value + "=" + assignment)
+    } else {
+      return ("$set(" + (res.exp) + ", " + (res.key) + ", " + assignment + ")")
+    }
+  }
+
+  /**
+   * Parse a v-model expression into a base path and a final key segment.
+   * Handles both dot-path and possible square brackets.
+   *
+   * Possible cases:
+   *
+   * - test
+   * - test[key]
+   * - test[test1[key]]
+   * - test["a"][key]
+   * - xxx.test[a[a].test1[key]]
+   * - test.xxx.a["asa"][test1[key]]
+   *
+   */
+
+  var len, str, chr, index$1, expressionPos, expressionEndPos;
+
+
+
+  function parseModel (val) {
+    // Fix https://github.com/vuejs/vue/pull/7730
+    // allow v-model="obj.val " (trailing whitespace)
+    val = val.trim();
+    len = val.length;
+
+    if (val.indexOf('[') < 0 || val.lastIndexOf(']') < len - 1) {
+      index$1 = val.lastIndexOf('.');
+      if (index$1 > -1) {
+        return {
+          exp: val.slice(0, index$1),
+          key: '"' + val.slice(index$1 + 1) + '"'
+        }
+      } else {
+        return {
+          exp: val,
+          key: null
+        }
+      }
+    }
+
+    str = val;
+    index$1 = expressionPos = expressionEndPos = 0;
+
+    while (!eof()) {
+      chr = next();
+      /* istanbul ignore if */
+      if (isStringStart(chr)) {
+        parseString(chr);
+      } else if (chr === 0x5B) {
+        parseBracket(chr);
+      }
+    }
+
+    return {
+      exp: val.slice(0, expressionPos),
+      key: val.slice(expressionPos + 1, expressionEndPos)
+    }
+  }
+
+  function next () {
+    return str.charCodeAt(++index$1)
+  }
+
+  function eof () {
+    return index$1 >= len
+  }
+
+  function isStringStart (chr) {
+    return chr === 0x22 || chr === 0x27
+  }
+
+  function parseBracket (chr) {
+    var inBracket = 1;
+    expressionPos = index$1;
+    while (!eof()) {
+      chr = next();
+      if (isStringStart(chr)) {
+        parseString(chr);
+        continue
+      }
+      if (chr === 0x5B) { inBracket++; }
+      if (chr === 0x5D) { inBracket--; }
+      if (inBracket === 0) {
+        expressionEndPos = index$1;
+        break
+      }
+    }
+  }
+
+  function parseString (chr) {
+    var stringQuote = chr;
+    while (!eof()) {
+      chr = next();
+      if (chr === stringQuote) {
+        break
+      }
+    }
+  }
+
+  /*  */
+
+  var warn$1;
+
+  // in some cases, the event used has to be determined at runtime
+  // so we used some reserved tokens during compile.
+  var RANGE_TOKEN = '__r';
+  var CHECKBOX_RADIO_TOKEN = '__c';
+
+  function model (
+    el,
+    dir,
+    _warn
+  ) {
+    warn$1 = _warn;
+    var value = dir.value;
+    var modifiers = dir.modifiers;
+    var tag = el.tag;
+    var type = el.attrsMap.type;
+
+    {
+      // inputs with type="file" are read only and setting the input's
+      // value will throw an error.
+      if (tag === 'input' && type === 'file') {
+        warn$1(
+          "<" + (el.tag) + " v-model=\"" + value + "\" type=\"file\">:\n" +
+          "File inputs are read only. Use a v-on:change listener instead.",
+          el.rawAttrsMap['v-model']
+        );
+      }
+    }
+
+    if (el.component) {
+      genComponentModel(el, value, modifiers);
+      // component v-model doesn't need extra runtime
+      return false
+    } else if (tag === 'select') {
+      genSelect(el, value, modifiers);
+    } else if (tag === 'input' && type === 'checkbox') {
+      genCheckboxModel(el, value, modifiers);
+    } else if (tag === 'input' && type === 'radio') {
+      genRadioModel(el, value, modifiers);
+    } else if (tag === 'input' || tag === 'textarea') {
+      genDefaultModel(el, value, modifiers);
+    } else if (!config.isReservedTag(tag)) {
+      genComponentModel(el, value, modifiers);
+      // component v-model doesn't need extra runtime
+      return false
+    } else {
+      warn$1(
+        "<" + (el.tag) + " v-model=\"" + value + "\">: " +
+        "v-model is not supported on this element type. " +
+        'If you are working with contenteditable, it\'s recommended to ' +
+        'wrap a library dedicated for that purpose inside a custom component.',
+        el.rawAttrsMap['v-model']
+      );
+    }
+
+    // ensure runtime directive metadata
+    return true
+  }
+
+  function genCheckboxModel (
+    el,
+    value,
+    modifiers
+  ) {
+    var number = modifiers && modifiers.number;
+    var valueBinding = getBindingAttr(el, 'value') || 'null';
+    var trueValueBinding = getBindingAttr(el, 'true-value') || 'true';
+    var falseValueBinding = getBindingAttr(el, 'false-value') || 'false';
+    addProp(el, 'checked',
+      "Array.isArray(" + value + ")" +
+      "?_i(" + value + "," + valueBinding + ")>-1" + (
+        trueValueBinding === 'true'
+          ? (":(" + value + ")")
+          : (":_q(" + value + "," + trueValueBinding + ")")
+      )
+    );
+    addHandler(el, 'change',
+      "var $$a=" + value + "," +
+          '$$el=$event.target,' +
+          "$$c=$$el.checked?(" + trueValueBinding + "):(" + falseValueBinding + ");" +
+      'if(Array.isArray($$a)){' +
+        "var $$v=" + (number ? '_n(' + valueBinding + ')' : valueBinding) + "," +
+            '$$i=_i($$a,$$v);' +
+        "if($$el.checked){$$i<0&&(" + (genAssignmentCode(value, '$$a.concat([$$v])')) + ")}" +
+        "else{$$i>-1&&(" + (genAssignmentCode(value, '$$a.slice(0,$$i).concat($$a.slice($$i+1))')) + ")}" +
+      "}else{" + (genAssignmentCode(value, '$$c')) + "}",
+      null, true
+    );
+  }
+
+  function genRadioModel (
+    el,
+    value,
+    modifiers
+  ) {
+    var number = modifiers && modifiers.number;
+    var valueBinding = getBindingAttr(el, 'value') || 'null';
+    valueBinding = number ? ("_n(" + valueBinding + ")") : valueBinding;
+    addProp(el, 'checked', ("_q(" + value + "," + valueBinding + ")"));
+    addHandler(el, 'change', genAssignmentCode(value, valueBinding), null, true);
+  }
+
+  function genSelect (
+    el,
+    value,
+    modifiers
+  ) {
+    var number = modifiers && modifiers.number;
+    var selectedVal = "Array.prototype.filter" +
+      ".call($event.target.options,function(o){return o.selected})" +
+      ".map(function(o){var val = \"_value\" in o ? o._value : o.value;" +
+      "return " + (number ? '_n(val)' : 'val') + "})";
+
+    var assignment = '$event.target.multiple ? $$selectedVal : $$selectedVal[0]';
+    var code = "var $$selectedVal = " + selectedVal + ";";
+    code = code + " " + (genAssignmentCode(value, assignment));
+    addHandler(el, 'change', code, null, true);
+  }
+
+  function genDefaultModel (
+    el,
+    value,
+    modifiers
+  ) {
+    var type = el.attrsMap.type;
+
+    // warn if v-bind:value conflicts with v-model
+    // except for inputs with v-bind:type
+    {
+      var value$1 = el.attrsMap['v-bind:value'] || el.attrsMap[':value'];
+      var typeBinding = el.attrsMap['v-bind:type'] || el.attrsMap[':type'];
+      if (value$1 && !typeBinding) {
+        var binding = el.attrsMap['v-bind:value'] ? 'v-bind:value' : ':value';
+        warn$1(
+          binding + "=\"" + value$1 + "\" conflicts with v-model on the same element " +
+          'because the latter already expands to a value binding internally',
+          el.rawAttrsMap[binding]
+        );
+      }
+    }
+
+    var ref = modifiers || {};
+    var lazy = ref.lazy;
+    var number = ref.number;
+    var trim = ref.trim;
+    var needCompositionGuard = !lazy && type !== 'range';
+    var event = lazy
+      ? 'change'
+      : type === 'range'
+        ? RANGE_TOKEN
+        : 'input';
+
+    var valueExpression = '$event.target.value';
+    if (trim) {
+      valueExpression = "$event.target.value.trim()";
+    }
+    if (number) {
+      valueExpression = "_n(" + valueExpression + ")";
+    }
+
+    var code = genAssignmentCode(value, valueExpression);
+    if (needCompositionGuard) {
+      code = "if($event.target.composing)return;" + code;
+    }
+
+    addProp(el, 'value', ("(" + value + ")"));
+    addHandler(el, event, code, null, true);
+    if (trim || number) {
+      addHandler(el, 'blur', '$forceUpdate()');
+    }
+  }
+
+  /*  */
+
+  // normalize v-model event tokens that can only be determined at runtime.
+  // it's important to place the event as the first in the array because
+  // the whole point is ensuring the v-model callback gets called before
+  // user-attached handlers.
+  function normalizeEvents (on) {
+    /* istanbul ignore if */
+    if (isDef(on[RANGE_TOKEN])) {
+      // IE input[type=range] only supports `change` event
+      var event = isIE ? 'change' : 'input';
+      on[event] = [].concat(on[RANGE_TOKEN], on[event] || []);
+      delete on[RANGE_TOKEN];
+    }
+    // This was originally intended to fix #4521 but no longer necessary
+    // after 2.5. Keeping it for backwards compat with generated code from < 2.4
+    /* istanbul ignore if */
+    if (isDef(on[CHECKBOX_RADIO_TOKEN])) {
+      on.change = [].concat(on[CHECKBOX_RADIO_TOKEN], on.change || []);
+      delete on[CHECKBOX_RADIO_TOKEN];
+    }
+  }
+
+  var target$1;
+
+  function createOnceHandler$1 (event, handler, capture) {
+    var _target = target$1; // save current target element in closure
+    return function onceHandler () {
+      var res = handler.apply(null, arguments);
+      if (res !== null) {
+        remove$2(event, onceHandler, capture, _target);
+      }
+    }
+  }
+
+  // #9446: Firefox <= 53 (in particular, ESR 52) has incorrect Event.timeStamp
+  // implementation and does not fire microtasks in between event propagation, so
+  // safe to exclude.
+  var useMicrotaskFix = isUsingMicroTask && !(isFF && Number(isFF[1]) <= 53);
+
+  function add$1 (
+    name,
+    handler,
+    capture,
+    passive
+  ) {
+    // async edge case #6566: inner click event triggers patch, event handler
+    // attached to outer element during patch, and triggered again. This
+    // happens because browsers fire microtask ticks between event propagation.
+    // the solution is simple: we save the timestamp when a handler is attached,
+    // and the handler would only fire if the event passed to it was fired
+    // AFTER it was attached.
+    if (useMicrotaskFix) {
+      var attachedTimestamp = currentFlushTimestamp;
+      var original = handler;
+      handler = original._wrapper = function (e) {
+        if (
+          // no bubbling, should always fire.
+          // this is just a safety net in case event.timeStamp is unreliable in
+          // certain weird environments...
+          e.target === e.currentTarget ||
+          // event is fired after handler attachment
+          e.timeStamp >= attachedTimestamp ||
+          // bail for environments that have buggy event.timeStamp implementations
+          // #9462 iOS 9 bug: event.timeStamp is 0 after history.pushState
+          // #9681 QtWebEngine event.timeStamp is negative value
+          e.timeStamp <= 0 ||
+          // #9448 bail if event is fired in another document in a multi-page
+          // electron/nw.js app, since event.timeStamp will be using a different
+          // starting reference
+          e.target.ownerDocument !== document
+        ) {
+          return original.apply(this, arguments)
+        }
+      };
+    }
+    target$1.addEventListener(
+      name,
+      handler,
+      supportsPassive
+        ? { capture: capture, passive: passive }
+        : capture
+    );
+  }
+
+  function remove$2 (
+    name,
+    handler,
+    capture,
+    _target
+  ) {
+    (_target || target$1).removeEventListener(
+      name,
+      handler._wrapper || handler,
+      capture
+    );
+  }
+
+  function updateDOMListeners (oldVnode, vnode) {
+    if (isUndef(oldVnode.data.on) && isUndef(vnode.data.on)) {
+      return
+    }
+    var on = vnode.data.on || {};
+    var oldOn = oldVnode.data.on || {};
+    target$1 = vnode.elm;
+    normalizeEvents(on);
+    updateListeners(on, oldOn, add$1, remove$2, createOnceHandler$1, vnode.context);
+    target$1 = undefined;
+  }
+
+  var events = {
+    create: updateDOMListeners,
+    update: updateDOMListeners
+  };
+
+  /*  */
+
+  var svgContainer;
+
+  function updateDOMProps (oldVnode, vnode) {
+    if (isUndef(oldVnode.data.domProps) && isUndef(vnode.data.domProps)) {
+      return
+    }
+    var key, cur;
+    var elm = vnode.elm;
+    var oldProps = oldVnode.data.domProps || {};
+    var props = vnode.data.domProps || {};
+    // clone observed objects, as the user probably wants to mutate it
+    if (isDef(props.__ob__)) {
+      props = vnode.data.domProps = extend({}, props);
+    }
+
+    for (key in oldProps) {
+      if (!(key in props)) {
+        elm[key] = '';
+      }
+    }
+
+    for (key in props) {
+      cur = props[key];
+      // ignore children if the node has textContent or innerHTML,
+      // as these will throw away existing DOM nodes and cause removal errors
+      // on subsequent patches (#3360)
+      if (key === 'textContent' || key === 'innerHTML') {
+        if (vnode.children) { vnode.children.length = 0; }
+        if (cur === oldProps[key]) { continue }
+        // #6601 work around Chrome version <= 55 bug where single textNode
+        // replaced by innerHTML/textContent retains its parentNode property
+        if (elm.childNodes.length === 1) {
+          elm.removeChild(elm.childNodes[0]);
+        }
+      }
+
+      if (key === 'value' && elm.tagName !== 'PROGRESS') {
+        // store value as _value as well since
+        // non-string values will be stringified
+        elm._value = cur;
+        // avoid resetting cursor position when value is the same
+        var strCur = isUndef(cur) ? '' : String(cur);
+        if (shouldUpdateValue(elm, strCur)) {
+          elm.value = strCur;
+        }
+      } else if (key === 'innerHTML' && isSVG(elm.tagName) && isUndef(elm.innerHTML)) {
+        // IE doesn't support innerHTML for SVG elements
+        svgContainer = svgContainer || document.createElement('div');
+        svgContainer.innerHTML = "<svg>" + cur + "</svg>";
+        var svg = svgContainer.firstChild;
+        while (elm.firstChild) {
+          elm.removeChild(elm.firstChild);
+        }
+        while (svg.firstChild) {
+          elm.appendChild(svg.firstChild);
+        }
+      } else if (
+        // skip the update if old and new VDOM state is the same.
+        // `value` is handled separately because the DOM value may be temporarily
+        // out of sync with VDOM state due to focus, composition and modifiers.
+        // This  #4521 by skipping the unnecessary `checked` update.
+        cur !== oldProps[key]
+      ) {
+        // some property updates can throw
+        // e.g. `value` on <progress> w/ non-finite value
+        try {
+          elm[key] = cur;
+        } catch (e) {}
+      }
+    }
+  }
+
+  // check platforms/web/util/attrs.js acceptValue
+
+
+  function shouldUpdateValue (elm, checkVal) {
+    return (!elm.composing && (
+      elm.tagName === 'OPTION' ||
+      isNotInFocusAndDirty(elm, checkVal) ||
+      isDirtyWithModifiers(elm, checkVal)
+    ))
+  }
+
+  function isNotInFocusAndDirty (elm, checkVal) {
+    // return true when textbox (.number and .trim) loses focus and its value is
+    // not equal to the updated value
+    var notInFocus = true;
+    // #6157
+    // work around IE bug when accessing document.activeElement in an iframe
+    try { notInFocus = document.activeElement !== elm; } catch (e) {}
+    return notInFocus && elm.value !== checkVal
+  }
+
+  function isDirtyWithModifiers (elm, newVal) {
+    var value = elm.value;
+    var modifiers = elm._vModifiers; // injected by v-model runtime
+    if (isDef(modifiers)) {
+      if (modifiers.number) {
+        return toNumber(value) !== toNumber(newVal)
+      }
+      if (modifiers.trim) {
+        return value.trim() !== newVal.trim()
+      }
+    }
+    return value !== newVal
+  }
+
+  var domProps = {
+    create: updateDOMProps,
+    update: updateDOMProps
+  };
+
+  /*  */
+
+  var parseStyleText = cached(function (cssText) {
+    var res = {};
+    var listDelimiter = /;(?![^(]*\))/g;
+    var propertyDelimiter = /:(.+)/;
+    cssText.split(listDelimiter).forEach(function (item) {
+      if (item) {
+        var tmp = item.split(propertyDelimiter);
+        tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim());
+      }
+    });
+    return res
+  });
+
+  // merge static and dynamic style data on the same vnode
+  function normalizeStyleData (data) {
+    var style = normalizeStyleBinding(data.style);
+    // static style is pre-processed into an object during compilation
+    // and is always a fresh object, so it's safe to merge into it
+    return data.staticStyle
+      ? extend(data.staticStyle, style)
+      : style
+  }
+
+  // normalize possible array / string values into Object
+  function normalizeStyleBinding (bindingStyle) {
+    if (Array.isArray(bindingStyle)) {
+      return toObject(bindingStyle)
+    }
+    if (typeof bindingStyle === 'string') {
+      return parseStyleText(bindingStyle)
+    }
+    return bindingStyle
+  }
+
+  /**
+   * parent component style should be after child's
+   * so that parent component's style could override it
+   */
+  function getStyle (vnode, checkChild) {
+    var res = {};
+    var styleData;
+
+    if (checkChild) {
+      var childNode = vnode;
+      while (childNode.componentInstance) {
+        childNode = childNode.componentInstance._vnode;
+        if (
+          childNode && childNode.data &&
+          (styleData = normalizeStyleData(childNode.data))
+        ) {
+          extend(res, styleData);
+        }
+      }
+    }
+
+    if ((styleData = normalizeStyleData(vnode.data))) {
+      extend(res, styleData);
+    }
+
+    var parentNode = vnode;
+    while ((parentNode = parentNode.parent)) {
+      if (parentNode.data && (styleData = normalizeStyleData(parentNode.data))) {
+        extend(res, styleData);
+      }
+    }
+    return res
+  }
+
+  /*  */
+
+  var cssVarRE = /^--/;
+  var importantRE = /\s*!important$/;
+  var setProp = function (el, name, val) {
+    /* istanbul ignore if */
+    if (cssVarRE.test(name)) {
+      el.style.setProperty(name, val);
+    } else if (importantRE.test(val)) {
+      el.style.setProperty(hyphenate(name), val.replace(importantRE, ''), 'important');
+    } else {
+      var normalizedName = normalize(name);
+      if (Array.isArray(val)) {
+        // Support values array created by autoprefixer, e.g.
+        // {display: ["-webkit-box", "-ms-flexbox", "flex"]}
+        // Set them one by one, and the browser will only set those it can recognize
+        for (var i = 0, len = val.length; i < len; i++) {
+          el.style[normalizedName] = val[i];
+        }
+      } else {
+        el.style[normalizedName] = val;
+      }
+    }
+  };
+
+  var vendorNames = ['Webkit', 'Moz', 'ms'];
+
+  var emptyStyle;
+  var normalize = cached(function (prop) {
+    emptyStyle = emptyStyle || document.createElement('div').style;
+    prop = camelize(prop);
+    if (prop !== 'filter' && (prop in emptyStyle)) {
+      return prop
+    }
+    var capName = prop.charAt(0).toUpperCase() + prop.slice(1);
+    for (var i = 0; i < vendorNames.length; i++) {
+      var name = vendorNames[i] + capName;
+      if (name in emptyStyle) {
+        return name
+      }
+    }
+  });
+
+  function updateStyle (oldVnode, vnode) {
+    var data = vnode.data;
+    var oldData = oldVnode.data;
+
+    if (isUndef(data.staticStyle) && isUndef(data.style) &&
+      isUndef(oldData.staticStyle) && isUndef(oldData.style)
+    ) {
+      return
+    }
+
+    var cur, name;
+    var el = vnode.elm;
+    var oldStaticStyle = oldData.staticStyle;
+    var oldStyleBinding = oldData.normalizedStyle || oldData.style || {};
+
+    // if static style exists, stylebinding already merged into it when doing normalizeStyleData
+    var oldStyle = oldStaticStyle || oldStyleBinding;
+
+    var style = normalizeStyleBinding(vnode.data.style) || {};
+
+    // store normalized style under a different key for next diff
+    // make sure to clone it if it's reactive, since the user likely wants
+    // to mutate it.
+    vnode.data.normalizedStyle = isDef(style.__ob__)
+      ? extend({}, style)
+      : style;
+
+    var newStyle = getStyle(vnode, true);
+
+    for (name in oldStyle) {
+      if (isUndef(newStyle[name])) {
+        setProp(el, name, '');
+      }
+    }
+    for (name in newStyle) {
+      cur = newStyle[name];
+      if (cur !== oldStyle[name]) {
+        // ie9 setting to null has no effect, must use empty string
+        setProp(el, name, cur == null ? '' : cur);
+      }
+    }
+  }
+
+  var style = {
+    create: updateStyle,
+    update: updateStyle
+  };
+
+  /*  */
+
+  var whitespaceRE = /\s+/;
+
+  /**
+   * Add class with compatibility for SVG since classList is not supported on
+   * SVG elements in IE
+   */
+  function addClass (el, cls) {
+    /* istanbul ignore if */
+    if (!cls || !(cls = cls.trim())) {
+      return
+    }
+
+    /* istanbul ignore else */
+    if (el.classList) {
+      if (cls.indexOf(' ') > -1) {
+        cls.split(whitespaceRE).forEach(function (c) { return el.classList.add(c); });
+      } else {
+        el.classList.add(cls);
+      }
+    } else {
+      var cur = " " + (el.getAttribute('class') || '') + " ";
+      if (cur.indexOf(' ' + cls + ' ') < 0) {
+        el.setAttribute('class', (cur + cls).trim());
+      }
+    }
+  }
+
+  /**
+   * Remove class with compatibility for SVG since classList is not supported on
+   * SVG elements in IE
+   */
+  function removeClass (el, cls) {
+    /* istanbul ignore if */
+    if (!cls || !(cls = cls.trim())) {
+      return
+    }
+
+    /* istanbul ignore else */
+    if (el.classList) {
+      if (cls.indexOf(' ') > -1) {
+        cls.split(whitespaceRE).forEach(function (c) { return el.classList.remove(c); });
+      } else {
+        el.classList.remove(cls);
+      }
+      if (!el.classList.length) {
+        el.removeAttribute('class');
+      }
+    } else {
+      var cur = " " + (el.getAttribute('class') || '') + " ";
+      var tar = ' ' + cls + ' ';
+      while (cur.indexOf(tar) >= 0) {
+        cur = cur.replace(tar, ' ');
+      }
+      cur = cur.trim();
+      if (cur) {
+        el.setAttribute('class', cur);
+      } else {
+        el.removeAttribute('class');
+      }
+    }
+  }
+
+  /*  */
+
+  function resolveTransition (def$$1) {
+    if (!def$$1) {
+      return
+    }
+    /* istanbul ignore else */
+    if (typeof def$$1 === 'object') {
+      var res = {};
+      if (def$$1.css !== false) {
+        extend(res, autoCssTransition(def$$1.name || 'v'));
+      }
+      extend(res, def$$1);
+      return res
+    } else if (typeof def$$1 === 'string') {
+      return autoCssTransition(def$$1)
+    }
+  }
+
+  var autoCssTransition = cached(function (name) {
+    return {
+      enterClass: (name + "-enter"),
+      enterToClass: (name + "-enter-to"),
+      enterActiveClass: (name + "-enter-active"),
+      leaveClass: (name + "-leave"),
+      leaveToClass: (name + "-leave-to"),
+      leaveActiveClass: (name + "-leave-active")
+    }
+  });
+
+  var hasTransition = inBrowser && !isIE9;
+  var TRANSITION = 'transition';
+  var ANIMATION = 'animation';
+
+  // Transition property/event sniffing
+  var transitionProp = 'transition';
+  var transitionEndEvent = 'transitionend';
+  var animationProp = 'animation';
+  var animationEndEvent = 'animationend';
+  if (hasTransition) {
+    /* istanbul ignore if */
+    if (window.ontransitionend === undefined &&
+      window.onwebkittransitionend !== undefined
+    ) {
+      transitionProp = 'WebkitTransition';
+      transitionEndEvent = 'webkitTransitionEnd';
+    }
+    if (window.onanimationend === undefined &&
+      window.onwebkitanimationend !== undefined
+    ) {
+      animationProp = 'WebkitAnimation';
+      animationEndEvent = 'webkitAnimationEnd';
+    }
+  }
+
+  // binding to window is necessary to make hot reload work in IE in strict mode
+  var raf = inBrowser
+    ? window.requestAnimationFrame
+      ? window.requestAnimationFrame.bind(window)
+      : setTimeout
+    : /* istanbul ignore next */ function (fn) { return fn(); };
+
+  function nextFrame (fn) {
+    raf(function () {
+      raf(fn);
+    });
+  }
+
+  function addTransitionClass (el, cls) {
+    var transitionClasses = el._transitionClasses || (el._transitionClasses = []);
+    if (transitionClasses.indexOf(cls) < 0) {
+      transitionClasses.push(cls);
+      addClass(el, cls);
+    }
+  }
+
+  function removeTransitionClass (el, cls) {
+    if (el._transitionClasses) {
+      remove(el._transitionClasses, cls);
+    }
+    removeClass(el, cls);
+  }
+
+  function whenTransitionEnds (
+    el,
+    expectedType,
+    cb
+  ) {
+    var ref = getTransitionInfo(el, expectedType);
+    var type = ref.type;
+    var timeout = ref.timeout;
+    var propCount = ref.propCount;
+    if (!type) { return cb() }
+    var event = type === TRANSITION ? transitionEndEvent : animationEndEvent;
+    var ended = 0;
+    var end = function () {
+      el.removeEventListener(event, onEnd);
+      cb();
+    };
+    var onEnd = function (e) {
+      if (e.target === el) {
+        if (++ended >= propCount) {
+          end();
+        }
+      }
+    };
+    setTimeout(function () {
+      if (ended < propCount) {
+        end();
+      }
+    }, timeout + 1);
+    el.addEventListener(event, onEnd);
+  }
+
+  var transformRE = /\b(transform|all)(,|$)/;
+
+  function getTransitionInfo (el, expectedType) {
+    var styles = window.getComputedStyle(el);
+    // JSDOM may return undefined for transition properties
+    var transitionDelays = (styles[transitionProp + 'Delay'] || '').split(', ');
+    var transitionDurations = (styles[transitionProp + 'Duration'] || '').split(', ');
+    var transitionTimeout = getTimeout(transitionDelays, transitionDurations);
+    var animationDelays = (styles[animationProp + 'Delay'] || '').split(', ');
+    var animationDurations = (styles[animationProp + 'Duration'] || '').split(', ');
+    var animationTimeout = getTimeout(animationDelays, animationDurations);
+
+    var type;
+    var timeout = 0;
+    var propCount = 0;
+    /* istanbul ignore if */
+    if (expectedType === TRANSITION) {
+      if (transitionTimeout > 0) {
+        type = TRANSITION;
+        timeout = transitionTimeout;
+        propCount = transitionDurations.length;
+      }
+    } else if (expectedType === ANIMATION) {
+      if (animationTimeout > 0) {
+        type = ANIMATION;
+        timeout = animationTimeout;
+        propCount = animationDurations.length;
+      }
+    } else {
+      timeout = Math.max(transitionTimeout, animationTimeout);
+      type = timeout > 0
+        ? transitionTimeout > animationTimeout
+          ? TRANSITION
+          : ANIMATION
+        : null;
+      propCount = type
+        ? type === TRANSITION
+          ? transitionDurations.length
+          : animationDurations.length
+        : 0;
+    }
+    var hasTransform =
+      type === TRANSITION &&
+      transformRE.test(styles[transitionProp + 'Property']);
+    return {
+      type: type,
+      timeout: timeout,
+      propCount: propCount,
+      hasTransform: hasTransform
+    }
+  }
+
+  function getTimeout (delays, durations) {
+    /* istanbul ignore next */
+    while (delays.length < durations.length) {
+      delays = delays.concat(delays);
+    }
+
+    return Math.max.apply(null, durations.map(function (d, i) {
+      return toMs(d) + toMs(delays[i])
+    }))
+  }
+
+  // Old versions of Chromium (below 61.0.3163.100) formats floating pointer numbers
+  // in a locale-dependent way, using a comma instead of a dot.
+  // If comma is not replaced with a dot, the input will be rounded down (i.e. acting
+  // as a floor function) causing unexpected behaviors
+  function toMs (s) {
+    return Number(s.slice(0, -1).replace(',', '.')) * 1000
+  }
+
+  /*  */
+
+  function enter (vnode, toggleDisplay) {
+    var el = vnode.elm;
+
+    // call leave callback now
+    if (isDef(el._leaveCb)) {
+      el._leaveCb.cancelled = true;
+      el._leaveCb();
+    }
+
+    var data = resolveTransition(vnode.data.transition);
+    if (isUndef(data)) {
+      return
+    }
+
+    /* istanbul ignore if */
+    if (isDef(el._enterCb) || el.nodeType !== 1) {
+      return
+    }
+
+    var css = data.css;
+    var type = data.type;
+    var enterClass = data.enterClass;
+    var enterToClass = data.enterToClass;
+    var enterActiveClass = data.enterActiveClass;
+    var appearClass = data.appearClass;
+    var appearToClass = data.appearToClass;
+    var appearActiveClass = data.appearActiveClass;
+    var beforeEnter = data.beforeEnter;
+    var enter = data.enter;
+    var afterEnter = data.afterEnter;
+    var enterCancelled = data.enterCancelled;
+    var beforeAppear = data.beforeAppear;
+    var appear = data.appear;
+    var afterAppear = data.afterAppear;
+    var appearCancelled = data.appearCancelled;
+    var duration = data.duration;
+
+    // activeInstance will always be the <transition> component managing this
+    // transition. One edge case to check is when the <transition> is placed
+    // as the root node of a child component. In that case we need to check
+    // <transition>'s parent for appear check.
+    var context = activeInstance;
+    var transitionNode = activeInstance.$vnode;
+    while (transitionNode && transitionNode.parent) {
+      context = transitionNode.context;
+      transitionNode = transitionNode.parent;
+    }
+
+    var isAppear = !context._isMounted || !vnode.isRootInsert;
+
+    if (isAppear && !appear && appear !== '') {
+      return
+    }
+
+    var startClass = isAppear && appearClass
+      ? appearClass
+      : enterClass;
+    var activeClass = isAppear && appearActiveClass
+      ? appearActiveClass
+      : enterActiveClass;
+    var toClass = isAppear && appearToClass
+      ? appearToClass
+      : enterToClass;
+
+    var beforeEnterHook = isAppear
+      ? (beforeAppear || beforeEnter)
+      : beforeEnter;
+    var enterHook = isAppear
+      ? (typeof appear === 'function' ? appear : enter)
+      : enter;
+    var afterEnterHook = isAppear
+      ? (afterAppear || afterEnter)
+      : afterEnter;
+    var enterCancelledHook = isAppear
+      ? (appearCancelled || enterCancelled)
+      : enterCancelled;
+
+    var explicitEnterDuration = toNumber(
+      isObject(duration)
+        ? duration.enter
+        : duration
+    );
+
+    if (explicitEnterDuration != null) {
+      checkDuration(explicitEnterDuration, 'enter', vnode);
+    }
+
+    var expectsCSS = css !== false && !isIE9;
+    var userWantsControl = getHookArgumentsLength(enterHook);
+
+    var cb = el._enterCb = once(function () {
+      if (expectsCSS) {
+        removeTransitionClass(el, toClass);
+        removeTransitionClass(el, activeClass);
+      }
+      if (cb.cancelled) {
+        if (expectsCSS) {
+          removeTransitionClass(el, startClass);
+        }
+        enterCancelledHook && enterCancelledHook(el);
+      } else {
+        afterEnterHook && afterEnterHook(el);
+      }
+      el._enterCb = null;
+    });
+
+    if (!vnode.data.show) {
+      // remove pending leave element on enter by injecting an insert hook
+      mergeVNodeHook(vnode, 'insert', function () {
+        var parent = el.parentNode;
+        var pendingNode = parent && parent._pending && parent._pending[vnode.key];
+        if (pendingNode &&
+          pendingNode.tag === vnode.tag &&
+          pendingNode.elm._leaveCb
+        ) {
+          pendingNode.elm._leaveCb();
+        }
+        enterHook && enterHook(el, cb);
+      });
+    }
+
+    // start enter transition
+    beforeEnterHook && beforeEnterHook(el);
+    if (expectsCSS) {
+      addTransitionClass(el, startClass);
+      addTransitionClass(el, activeClass);
+      nextFrame(function () {
+        removeTransitionClass(el, startClass);
+        if (!cb.cancelled) {
+          addTransitionClass(el, toClass);
+          if (!userWantsControl) {
+            if (isValidDuration(explicitEnterDuration)) {
+              setTimeout(cb, explicitEnterDuration);
+            } else {
+              whenTransitionEnds(el, type, cb);
+            }
+          }
+        }
+      });
+    }
+
+    if (vnode.data.show) {
+      toggleDisplay && toggleDisplay();
+      enterHook && enterHook(el, cb);
+    }
+
+    if (!expectsCSS && !userWantsControl) {
+      cb();
+    }
+  }
+
+  function leave (vnode, rm) {
+    var el = vnode.elm;
+
+    // call enter callback now
+    if (isDef(el._enterCb)) {
+      el._enterCb.cancelled = true;
+      el._enterCb();
+    }
+
+    var data = resolveTransition(vnode.data.transition);
+    if (isUndef(data) || el.nodeType !== 1) {
+      return rm()
+    }
+
+    /* istanbul ignore if */
+    if (isDef(el._leaveCb)) {
+      return
+    }
+
+    var css = data.css;
+    var type = data.type;
+    var leaveClass = data.leaveClass;
+    var leaveToClass = data.leaveToClass;
+    var leaveActiveClass = data.leaveActiveClass;
+    var beforeLeave = data.beforeLeave;
+    var leave = data.leave;
+    var afterLeave = data.afterLeave;
+    var leaveCancelled = data.leaveCancelled;
+    var delayLeave = data.delayLeave;
+    var duration = data.duration;
+
+    var expectsCSS = css !== false && !isIE9;
+    var userWantsControl = getHookArgumentsLength(leave);
+
+    var explicitLeaveDuration = toNumber(
+      isObject(duration)
+        ? duration.leave
+        : duration
+    );
+
+    if (isDef(explicitLeaveDuration)) {
+      checkDuration(explicitLeaveDuration, 'leave', vnode);
+    }
+
+    var cb = el._leaveCb = once(function () {
+      if (el.parentNode && el.parentNode._pending) {
+        el.parentNode._pending[vnode.key] = null;
+      }
+      if (expectsCSS) {
+        removeTransitionClass(el, leaveToClass);
+        removeTransitionClass(el, leaveActiveClass);
+      }
+      if (cb.cancelled) {
+        if (expectsCSS) {
+          removeTransitionClass(el, leaveClass);
+        }
+        leaveCancelled && leaveCancelled(el);
+      } else {
+        rm();
+        afterLeave && afterLeave(el);
+      }
+      el._leaveCb = null;
+    });
+
+    if (delayLeave) {
+      delayLeave(performLeave);
+    } else {
+      performLeave();
+    }
+
+    function performLeave () {
+      // the delayed leave may have already been cancelled
+      if (cb.cancelled) {
+        return
+      }
+      // record leaving element
+      if (!vnode.data.show && el.parentNode) {
+        (el.parentNode._pending || (el.parentNode._pending = {}))[(vnode.key)] = vnode;
+      }
+      beforeLeave && beforeLeave(el);
+      if (expectsCSS) {
+        addTransitionClass(el, leaveClass);
+        addTransitionClass(el, leaveActiveClass);
+        nextFrame(function () {
+          removeTransitionClass(el, leaveClass);
+          if (!cb.cancelled) {
+            addTransitionClass(el, leaveToClass);
+            if (!userWantsControl) {
+              if (isValidDuration(explicitLeaveDuration)) {
+                setTimeout(cb, explicitLeaveDuration);
+              } else {
+                whenTransitionEnds(el, type, cb);
+              }
+            }
+          }
+        });
+      }
+      leave && leave(el, cb);
+      if (!expectsCSS && !userWantsControl) {
+        cb();
+      }
+    }
+  }
+
+  // only used in dev mode
+  function checkDuration (val, name, vnode) {
+    if (typeof val !== 'number') {
+      warn(
+        "<transition> explicit " + name + " duration is not a valid number - " +
+        "got " + (JSON.stringify(val)) + ".",
+        vnode.context
+      );
+    } else if (isNaN(val)) {
+      warn(
+        "<transition> explicit " + name + " duration is NaN - " +
+        'the duration expression might be incorrect.',
+        vnode.context
+      );
+    }
+  }
+
+  function isValidDuration (val) {
+    return typeof val === 'number' && !isNaN(val)
+  }
+
+  /**
+   * Normalize a transition hook's argument length. The hook may be:
+   * - a merged hook (invoker) with the original in .fns
+   * - a wrapped component method (check ._length)
+   * - a plain function (.length)
+   */
+  function getHookArgumentsLength (fn) {
+    if (isUndef(fn)) {
+      return false
+    }
+    var invokerFns = fn.fns;
+    if (isDef(invokerFns)) {
+      // invoker
+      return getHookArgumentsLength(
+        Array.isArray(invokerFns)
+          ? invokerFns[0]
+          : invokerFns
+      )
+    } else {
+      return (fn._length || fn.length) > 1
+    }
+  }
+
+  function _enter (_, vnode) {
+    if (vnode.data.show !== true) {
+      enter(vnode);
+    }
+  }
+
+  var transition = inBrowser ? {
+    create: _enter,
+    activate: _enter,
+    remove: function remove$$1 (vnode, rm) {
+      /* istanbul ignore else */
+      if (vnode.data.show !== true) {
+        leave(vnode, rm);
+      } else {
+        rm();
+      }
+    }
+  } : {};
+
+  var platformModules = [
+    attrs,
+    klass,
+    events,
+    domProps,
+    style,
+    transition
+  ];
+
+  /*  */
+
+  // the directive module should be applied last, after all
+  // built-in modules have been applied.
+  var modules = platformModules.concat(baseModules);
+
+  var patch = createPatchFunction({ nodeOps: nodeOps, modules: modules });
+
+  /**
+   * Not type checking this file because flow doesn't like attaching
+   * properties to Elements.
+   */
+
+  /* istanbul ignore if */
+  if (isIE9) {
+    // http://www.matts411.com/post/internet-explorer-9-oninput/
+    document.addEventListener('selectionchange', function () {
+      var el = document.activeElement;
+      if (el && el.vmodel) {
+        trigger(el, 'input');
+      }
+    });
+  }
+
+  var directive = {
+    inserted: function inserted (el, binding, vnode, oldVnode) {
+      if (vnode.tag === 'select') {
+        // #6903
+        if (oldVnode.elm && !oldVnode.elm._vOptions) {
+          mergeVNodeHook(vnode, 'postpatch', function () {
+            directive.componentUpdated(el, binding, vnode);
+          });
+        } else {
+          setSelected(el, binding, vnode.context);
+        }
+        el._vOptions = [].map.call(el.options, getValue);
+      } else if (vnode.tag === 'textarea' || isTextInputType(el.type)) {
+        el._vModifiers = binding.modifiers;
+        if (!binding.modifiers.lazy) {
+          el.addEventListener('compositionstart', onCompositionStart);
+          el.addEventListener('compositionend', onCompositionEnd);
+          // Safari < 10.2 & UIWebView doesn't fire compositionend when
+          // switching focus before confirming composition choice
+          // this also fixes the issue where some browsers e.g. iOS Chrome
+          // fires "change" instead of "input" on autocomplete.
+          el.addEventListener('change', onCompositionEnd);
+          /* istanbul ignore if */
+          if (isIE9) {
+            el.vmodel = true;
+          }
+        }
+      }
+    },
+
+    componentUpdated: function componentUpdated (el, binding, vnode) {
+      if (vnode.tag === 'select') {
+        setSelected(el, binding, vnode.context);
+        // in case the options rendered by v-for have changed,
+        // it's possible that the value is out-of-sync with the rendered options.
+        // detect such cases and filter out values that no longer has a matching
+        // option in the DOM.
+        var prevOptions = el._vOptions;
+        var curOptions = el._vOptions = [].map.call(el.options, getValue);
+        if (curOptions.some(function (o, i) { return !looseEqual(o, prevOptions[i]); })) {
+          // trigger change event if
+          // no matching option found for at least one value
+          var needReset = el.multiple
+            ? binding.value.some(function (v) { return hasNoMatchingOption(v, curOptions); })
+            : binding.value !== binding.oldValue && hasNoMatchingOption(binding.value, curOptions);
+          if (needReset) {
+            trigger(el, 'change');
+          }
+        }
+      }
+    }
+  };
+
+  function setSelected (el, binding, vm) {
+    actuallySetSelected(el, binding, vm);
+    /* istanbul ignore if */
+    if (isIE || isEdge) {
+      setTimeout(function () {
+        actuallySetSelected(el, binding, vm);
+      }, 0);
+    }
+  }
+
+  function actuallySetSelected (el, binding, vm) {
+    var value = binding.value;
+    var isMultiple = el.multiple;
+    if (isMultiple && !Array.isArray(value)) {
+      warn(
+        "<select multiple v-model=\"" + (binding.expression) + "\"> " +
+        "expects an Array value for its binding, but got " + (Object.prototype.toString.call(value).slice(8, -1)),
+        vm
+      );
+      return
+    }
+    var selected, option;
+    for (var i = 0, l = el.options.length; i < l; i++) {
+      option = el.options[i];
+      if (isMultiple) {
+        selected = looseIndexOf(value, getValue(option)) > -1;
+        if (option.selected !== selected) {
+          option.selected = selected;
+        }
+      } else {
+        if (looseEqual(getValue(option), value)) {
+          if (el.selectedIndex !== i) {
+            el.selectedIndex = i;
+          }
+          return
+        }
+      }
+    }
+    if (!isMultiple) {
+      el.selectedIndex = -1;
+    }
+  }
+
+  function hasNoMatchingOption (value, options) {
+    return options.every(function (o) { return !looseEqual(o, value); })
+  }
+
+  function getValue (option) {
+    return '_value' in option
+      ? option._value
+      : option.value
+  }
+
+  function onCompositionStart (e) {
+    e.target.composing = true;
+  }
+
+  function onCompositionEnd (e) {
+    // prevent triggering an input event for no reason
+    if (!e.target.composing) { return }
+    e.target.composing = false;
+    trigger(e.target, 'input');
+  }
+
+  function trigger (el, type) {
+    var e = document.createEvent('HTMLEvents');
+    e.initEvent(type, true, true);
+    el.dispatchEvent(e);
+  }
+
+  /*  */
+
+  // recursively search for possible transition defined inside the component root
+  function locateNode (vnode) {
+    return vnode.componentInstance && (!vnode.data || !vnode.data.transition)
+      ? locateNode(vnode.componentInstance._vnode)
+      : vnode
+  }
+
+  var show = {
+    bind: function bind (el, ref, vnode) {
+      var value = ref.value;
+
+      vnode = locateNode(vnode);
+      var transition$$1 = vnode.data && vnode.data.transition;
+      var originalDisplay = el.__vOriginalDisplay =
+        el.style.display === 'none' ? '' : el.style.display;
+      if (value && transition$$1) {
+        vnode.data.show = true;
+        enter(vnode, function () {
+          el.style.display = originalDisplay;
+        });
+      } else {
+        el.style.display = value ? originalDisplay : 'none';
+      }
+    },
+
+    update: function update (el, ref, vnode) {
+      var value = ref.value;
+      var oldValue = ref.oldValue;
+
+      /* istanbul ignore if */
+      if (!value === !oldValue) { return }
+      vnode = locateNode(vnode);
+      var transition$$1 = vnode.data && vnode.data.transition;
+      if (transition$$1) {
+        vnode.data.show = true;
+        if (value) {
+          enter(vnode, function () {
+            el.style.display = el.__vOriginalDisplay;
+          });
+        } else {
+          leave(vnode, function () {
+            el.style.display = 'none';
+          });
+        }
+      } else {
+        el.style.display = value ? el.__vOriginalDisplay : 'none';
+      }
+    },
+
+    unbind: function unbind (
+      el,
+      binding,
+      vnode,
+      oldVnode,
+      isDestroy
+    ) {
+      if (!isDestroy) {
+        el.style.display = el.__vOriginalDisplay;
+      }
+    }
+  };
+
+  var platformDirectives = {
+    model: directive,
+    show: show
+  };
+
+  /*  */
+
+  var transitionProps = {
+    name: String,
+    appear: Boolean,
+    css: Boolean,
+    mode: String,
+    type: String,
+    enterClass: String,
+    leaveClass: String,
+    enterToClass: String,
+    leaveToClass: String,
+    enterActiveClass: String,
+    leaveActiveClass: String,
+    appearClass: String,
+    appearActiveClass: String,
+    appearToClass: String,
+    duration: [Number, String, Object]
+  };
+
+  // in case the child is also an abstract component, e.g. <keep-alive>
+  // we want to recursively retrieve the real component to be rendered
+  function getRealChild (vnode) {
+    var compOptions = vnode && vnode.componentOptions;
+    if (compOptions && compOptions.Ctor.options.abstract) {
+      return getRealChild(getFirstComponentChild(compOptions.children))
+    } else {
+      return vnode
+    }
+  }
+
+  function extractTransitionData (comp) {
+    var data = {};
+    var options = comp.$options;
+    // props
+    for (var key in options.propsData) {
+      data[key] = comp[key];
+    }
+    // events.
+    // extract listeners and pass them directly to the transition methods
+    var listeners = options._parentListeners;
+    for (var key$1 in listeners) {
+      data[camelize(key$1)] = listeners[key$1];
+    }
+    return data
+  }
+
+  function placeholder (h, rawChild) {
+    if (/\d-keep-alive$/.test(rawChild.tag)) {
+      return h('keep-alive', {
+        props: rawChild.componentOptions.propsData
+      })
+    }
+  }
+
+  function hasParentTransition (vnode) {
+    while ((vnode = vnode.parent)) {
+      if (vnode.data.transition) {
+        return true
+      }
+    }
+  }
+
+  function isSameChild (child, oldChild) {
+    return oldChild.key === child.key && oldChild.tag === child.tag
+  }
+
+  var isNotTextNode = function (c) { return c.tag || isAsyncPlaceholder(c); };
+
+  var isVShowDirective = function (d) { return d.name === 'show'; };
+
+  var Transition = {
+    name: 'transition',
+    props: transitionProps,
+    abstract: true,
+
+    render: function render (h) {
+      var this$1 = this;
+
+      var children = this.$slots.default;
+      if (!children) {
+        return
+      }
+
+      // filter out text nodes (possible whitespaces)
+      children = children.filter(isNotTextNode);
+      /* istanbul ignore if */
+      if (!children.length) {
+        return
+      }
+
+      // warn multiple elements
+      if (children.length > 1) {
+        warn(
+          '<transition> can only be used on a single element. Use ' +
+          '<transition-group> for lists.',
+          this.$parent
+        );
+      }
+
+      var mode = this.mode;
+
+      // warn invalid mode
+      if (mode && mode !== 'in-out' && mode !== 'out-in'
+      ) {
+        warn(
+          'invalid <transition> mode: ' + mode,
+          this.$parent
+        );
+      }
+
+      var rawChild = children[0];
+
+      // if this is a component root node and the component's
+      // parent container node also has transition, skip.
+      if (hasParentTransition(this.$vnode)) {
+        return rawChild
+      }
+
+      // apply transition data to child
+      // use getRealChild() to ignore abstract components e.g. keep-alive
+      var child = getRealChild(rawChild);
+      /* istanbul ignore if */
+      if (!child) {
+        return rawChild
+      }
+
+      if (this._leaving) {
+        return placeholder(h, rawChild)
+      }
+
+      // ensure a key that is unique to the vnode type and to this transition
+      // component instance. This key will be used to remove pending leaving nodes
+      // during entering.
+      var id = "__transition-" + (this._uid) + "-";
+      child.key = child.key == null
+        ? child.isComment
+          ? id + 'comment'
+          : id + child.tag
+        : isPrimitive(child.key)
+          ? (String(child.key).indexOf(id) === 0 ? child.key : id + child.key)
+          : child.key;
+
+      var data = (child.data || (child.data = {})).transition = extractTransitionData(this);
+      var oldRawChild = this._vnode;
+      var oldChild = getRealChild(oldRawChild);
+
+      // mark v-show
+      // so that the transition module can hand over the control to the directive
+      if (child.data.directives && child.data.directives.some(isVShowDirective)) {
+        child.data.show = true;
+      }
+
+      if (
+        oldChild &&
+        oldChild.data &&
+        !isSameChild(child, oldChild) &&
+        !isAsyncPlaceholder(oldChild) &&
+        // #6687 component root is a comment node
+        !(oldChild.componentInstance && oldChild.componentInstance._vnode.isComment)
+      ) {
+        // replace old child transition data with fresh one
+        // important for dynamic transitions!
+        var oldData = oldChild.data.transition = extend({}, data);
+        // handle transition mode
+        if (mode === 'out-in') {
+          // return placeholder node and queue update when leave finishes
+          this._leaving = true;
+          mergeVNodeHook(oldData, 'afterLeave', function () {
+            this$1._leaving = false;
+            this$1.$forceUpdate();
+          });
+          return placeholder(h, rawChild)
+        } else if (mode === 'in-out') {
+          if (isAsyncPlaceholder(child)) {
+            return oldRawChild
+          }
+          var delayedLeave;
+          var performLeave = function () { delayedLeave(); };
+          mergeVNodeHook(data, 'afterEnter', performLeave);
+          mergeVNodeHook(data, 'enterCancelled', performLeave);
+          mergeVNodeHook(oldData, 'delayLeave', function (leave) { delayedLeave = leave; });
+        }
+      }
+
+      return rawChild
+    }
+  };
+
+  /*  */
+
+  var props = extend({
+    tag: String,
+    moveClass: String
+  }, transitionProps);
+
+  delete props.mode;
+
+  var TransitionGroup = {
+    props: props,
+
+    beforeMount: function beforeMount () {
+      var this$1 = this;
+
+      var update = this._update;
+      this._update = function (vnode, hydrating) {
+        var restoreActiveInstance = setActiveInstance(this$1);
+        // force removing pass
+        this$1.__patch__(
+          this$1._vnode,
+          this$1.kept,
+          false, // hydrating
+          true // removeOnly (!important, avoids unnecessary moves)
+        );
+        this$1._vnode = this$1.kept;
+        restoreActiveInstance();
+        update.call(this$1, vnode, hydrating);
+      };
+    },
+
+    render: function render (h) {
+      var tag = this.tag || this.$vnode.data.tag || 'span';
+      var map = Object.create(null);
+      var prevChildren = this.prevChildren = this.children;
+      var rawChildren = this.$slots.default || [];
+      var children = this.children = [];
+      var transitionData = extractTransitionData(this);
+
+      for (var i = 0; i < rawChildren.length; i++) {
+        var c = rawChildren[i];
+        if (c.tag) {
+          if (c.key != null && String(c.key).indexOf('__vlist') !== 0) {
+            children.push(c);
+            map[c.key] = c
+            ;(c.data || (c.data = {})).transition = transitionData;
+          } else {
+            var opts = c.componentOptions;
+            var name = opts ? (opts.Ctor.options.name || opts.tag || '') : c.tag;
+            warn(("<transition-group> children must be keyed: <" + name + ">"));
+          }
+        }
+      }
+
+      if (prevChildren) {
+        var kept = [];
+        var removed = [];
+        for (var i$1 = 0; i$1 < prevChildren.length; i$1++) {
+          var c$1 = prevChildren[i$1];
+          c$1.data.transition = transitionData;
+          c$1.data.pos = c$1.elm.getBoundingClientRect();
+          if (map[c$1.key]) {
+            kept.push(c$1);
+          } else {
+            removed.push(c$1);
+          }
+        }
+        this.kept = h(tag, null, kept);
+        this.removed = removed;
+      }
+
+      return h(tag, null, children)
+    },
+
+    updated: function updated () {
+      var children = this.prevChildren;
+      var moveClass = this.moveClass || ((this.name || 'v') + '-move');
+      if (!children.length || !this.hasMove(children[0].elm, moveClass)) {
+        return
+      }
+
+      // we divide the work into three loops to avoid mixing DOM reads and writes
+      // in each iteration - which helps prevent layout thrashing.
+      children.forEach(callPendingCbs);
+      children.forEach(recordPosition);
+      children.forEach(applyTranslation);
+
+      // force reflow to put everything in position
+      // assign to this to avoid being removed in tree-shaking
+      // $flow-disable-line
+      this._reflow = document.body.offsetHeight;
+
+      children.forEach(function (c) {
+        if (c.data.moved) {
+          var el = c.elm;
+          var s = el.style;
+          addTransitionClass(el, moveClass);
+          s.transform = s.WebkitTransform = s.transitionDuration = '';
+          el.addEventListener(transitionEndEvent, el._moveCb = function cb (e) {
+            if (e && e.target !== el) {
+              return
+            }
+            if (!e || /transform$/.test(e.propertyName)) {
+              el.removeEventListener(transitionEndEvent, cb);
+              el._moveCb = null;
+              removeTransitionClass(el, moveClass);
+            }
+          });
+        }
+      });
+    },
+
+    methods: {
+      hasMove: function hasMove (el, moveClass) {
+        /* istanbul ignore if */
+        if (!hasTransition) {
+          return false
+        }
+        /* istanbul ignore if */
+        if (this._hasMove) {
+          return this._hasMove
+        }
+        // Detect whether an element with the move class applied has
+        // CSS transitions. Since the element may be inside an entering
+        // transition at this very moment, we make a clone of it and remove
+        // all other transition classes applied to ensure only the move class
+        // is applied.
+        var clone = el.cloneNode();
+        if (el._transitionClasses) {
+          el._transitionClasses.forEach(function (cls) { removeClass(clone, cls); });
+        }
+        addClass(clone, moveClass);
+        clone.style.display = 'none';
+        this.$el.appendChild(clone);
+        var info = getTransitionInfo(clone);
+        this.$el.removeChild(clone);
+        return (this._hasMove = info.hasTransform)
+      }
+    }
+  };
+
+  function callPendingCbs (c) {
+    /* istanbul ignore if */
+    if (c.elm._moveCb) {
+      c.elm._moveCb();
+    }
+    /* istanbul ignore if */
+    if (c.elm._enterCb) {
+      c.elm._enterCb();
+    }
+  }
+
+  function recordPosition (c) {
+    c.data.newPos = c.elm.getBoundingClientRect();
+  }
+
+  function applyTranslation (c) {
+    var oldPos = c.data.pos;
+    var newPos = c.data.newPos;
+    var dx = oldPos.left - newPos.left;
+    var dy = oldPos.top - newPos.top;
+    if (dx || dy) {
+      c.data.moved = true;
+      var s = c.elm.style;
+      s.transform = s.WebkitTransform = "translate(" + dx + "px," + dy + "px)";
+      s.transitionDuration = '0s';
+    }
+  }
+
+  var platformComponents = {
+    Transition: Transition,
+    TransitionGroup: TransitionGroup
+  };
+
+  /*  */
+
+  // install platform specific utils
+  Vue.config.mustUseProp = mustUseProp;
+  Vue.config.isReservedTag = isReservedTag;
+  Vue.config.isReservedAttr = isReservedAttr;
+  Vue.config.getTagNamespace = getTagNamespace;
+  Vue.config.isUnknownElement = isUnknownElement;
+
+  // install platform runtime directives & components
+  extend(Vue.options.directives, platformDirectives);
+  extend(Vue.options.components, platformComponents);
+
+  // install platform patch function
+  Vue.prototype.__patch__ = inBrowser ? patch : noop;
+
+  // public mount method
+  Vue.prototype.$mount = function (
+    el,
+    hydrating
+  ) {
+    el = el && inBrowser ? query(el) : undefined;
+    return mountComponent(this, el, hydrating)
+  };
+
+  // devtools global hook
+  /* istanbul ignore next */
+  if (inBrowser) {
+    setTimeout(function () {
+      if (config.devtools) {
+        if (devtools) {
+          devtools.emit('init', Vue);
+        } else {
+          console[console.info ? 'info' : 'log'](
+            'Download the Vue Devtools extension for a better development experience:\n' +
+            'https://github.com/vuejs/vue-devtools'
+          );
+        }
+      }
+      if (config.productionTip !== false &&
+        typeof console !== 'undefined'
+      ) {
+        console[console.info ? 'info' : 'log'](
+          "You are running Vue in development mode.\n" +
+          "Make sure to turn on production mode when deploying for production.\n" +
+          "See more tips at https://vuejs.org/guide/deployment.html"
+        );
+      }
+    }, 0);
+  }
+
+  /*  */
+
+  var defaultTagRE = /\{\{((?:.|\r?\n)+?)\}\}/g;
+  var regexEscapeRE = /[-.*+?^${}()|[\]\/\\]/g;
+
+  var buildRegex = cached(function (delimiters) {
+    var open = delimiters[0].replace(regexEscapeRE, '\\$&');
+    var close = delimiters[1].replace(regexEscapeRE, '\\$&');
+    return new RegExp(open + '((?:.|\\n)+?)' + close, 'g')
+  });
+
+
+
+  function parseText (
+    text,
+    delimiters
+  ) {
+    var tagRE = delimiters ? buildRegex(delimiters) : defaultTagRE;
+    if (!tagRE.test(text)) {
+      return
+    }
+    var tokens = [];
+    var rawTokens = [];
+    var lastIndex = tagRE.lastIndex = 0;
+    var match, index, tokenValue;
+    while ((match = tagRE.exec(text))) {
+      index = match.index;
+      // push text token
+      if (index > lastIndex) {
+        rawTokens.push(tokenValue = text.slice(lastIndex, index));
+        tokens.push(JSON.stringify(tokenValue));
+      }
+      // tag token
+      var exp = parseFilters(match[1].trim());
+      tokens.push(("_s(" + exp + ")"));
+      rawTokens.push({ '@binding': exp });
+      lastIndex = index + match[0].length;
+    }
+    if (lastIndex < text.length) {
+      rawTokens.push(tokenValue = text.slice(lastIndex));
+      tokens.push(JSON.stringify(tokenValue));
+    }
+    return {
+      expression: tokens.join('+'),
+      tokens: rawTokens
+    }
+  }
+
+  /*  */
+
+  function transformNode (el, options) {
+    var warn = options.warn || baseWarn;
+    var staticClass = getAndRemoveAttr(el, 'class');
+    if (staticClass) {
+      var res = parseText(staticClass, options.delimiters);
+      if (res) {
+        warn(
+          "class=\"" + staticClass + "\": " +
+          'Interpolation inside attributes has been removed. ' +
+          'Use v-bind or the colon shorthand instead. For example, ' +
+          'instead of <div class="{{ val }}">, use <div :class="val">.',
+          el.rawAttrsMap['class']
+        );
+      }
+    }
+    if (staticClass) {
+      el.staticClass = JSON.stringify(staticClass);
+    }
+    var classBinding = getBindingAttr(el, 'class', false /* getStatic */);
+    if (classBinding) {
+      el.classBinding = classBinding;
+    }
+  }
+
+  function genData (el) {
+    var data = '';
+    if (el.staticClass) {
+      data += "staticClass:" + (el.staticClass) + ",";
+    }
+    if (el.classBinding) {
+      data += "class:" + (el.classBinding) + ",";
+    }
+    return data
+  }
+
+  var klass$1 = {
+    staticKeys: ['staticClass'],
+    transformNode: transformNode,
+    genData: genData
+  };
+
+  /*  */
+
+  function transformNode$1 (el, options) {
+    var warn = options.warn || baseWarn;
+    var staticStyle = getAndRemoveAttr(el, 'style');
+    if (staticStyle) {
+      /* istanbul ignore if */
+      {
+        var res = parseText(staticStyle, options.delimiters);
+        if (res) {
+          warn(
+            "style=\"" + staticStyle + "\": " +
+            'Interpolation inside attributes has been removed. ' +
+            'Use v-bind or the colon shorthand instead. For example, ' +
+            'instead of <div style="{{ val }}">, use <div :style="val">.',
+            el.rawAttrsMap['style']
+          );
+        }
+      }
+      el.staticStyle = JSON.stringify(parseStyleText(staticStyle));
+    }
+
+    var styleBinding = getBindingAttr(el, 'style', false /* getStatic */);
+    if (styleBinding) {
+      el.styleBinding = styleBinding;
+    }
+  }
+
+  function genData$1 (el) {
+    var data = '';
+    if (el.staticStyle) {
+      data += "staticStyle:" + (el.staticStyle) + ",";
+    }
+    if (el.styleBinding) {
+      data += "style:(" + (el.styleBinding) + "),";
+    }
+    return data
+  }
+
+  var style$1 = {
+    staticKeys: ['staticStyle'],
+    transformNode: transformNode$1,
+    genData: genData$1
+  };
+
+  /*  */
+
+  var decoder;
+
+  var he = {
+    decode: function decode (html) {
+      decoder = decoder || document.createElement('div');
+      decoder.innerHTML = html;
+      return decoder.textContent
+    }
+  };
+
+  /*  */
+
+  var isUnaryTag = makeMap(
+    'area,base,br,col,embed,frame,hr,img,input,isindex,keygen,' +
+    'link,meta,param,source,track,wbr'
+  );
+
+  // Elements that you can, intentionally, leave open
+  // (and which close themselves)
+  var canBeLeftOpenTag = makeMap(
+    'colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr,source'
+  );
+
+  // HTML5 tags https://html.spec.whatwg.org/multipage/indices.html#elements-3
+  // Phrasing Content https://html.spec.whatwg.org/multipage/dom.html#phrasing-content
+  var isNonPhrasingTag = makeMap(
+    'address,article,aside,base,blockquote,body,caption,col,colgroup,dd,' +
+    'details,dialog,div,dl,dt,fieldset,figcaption,figure,footer,form,' +
+    'h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,legend,li,menuitem,meta,' +
+    'optgroup,option,param,rp,rt,source,style,summary,tbody,td,tfoot,th,thead,' +
+    'title,tr,track'
+  );
+
+  /**
+   * Not type-checking this file because it's mostly vendor code.
+   */
+
+  // Regular Expressions for parsing tags and attributes
+  var attribute = /^\s*([^\s"'<>\/=]+)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/;
+  var dynamicArgAttribute = /^\s*((?:v-[\w-]+:|@|:|#)\[[^=]+\][^\s"'<>\/=]*)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/;
+  var ncname = "[a-zA-Z_][\\-\\.0-9_a-zA-Z" + (unicodeRegExp.source) + "]*";
+  var qnameCapture = "((?:" + ncname + "\\:)?" + ncname + ")";
+  var startTagOpen = new RegExp(("^<" + qnameCapture));
+  var startTagClose = /^\s*(\/?)>/;
+  var endTag = new RegExp(("^<\\/" + qnameCapture + "[^>]*>"));
+  var doctype = /^<!DOCTYPE [^>]+>/i;
+  // #7298: escape - to avoid being passed as HTML comment when inlined in page
+  var comment = /^<!\--/;
+  var conditionalComment = /^<!\[/;
+
+  // Special Elements (can contain anything)
+  var isPlainTextElement = makeMap('script,style,textarea', true);
+  var reCache = {};
+
+  var decodingMap = {
+    '&lt;': '<',
+    '&gt;': '>',
+    '&quot;': '"',
+    '&amp;': '&',
+    '&#10;': '\n',
+    '&#9;': '\t',
+    '&#39;': "'"
+  };
+  var encodedAttr = /&(?:lt|gt|quot|amp|#39);/g;
+  var encodedAttrWithNewLines = /&(?:lt|gt|quot|amp|#39|#10|#9);/g;
+
+  // #5992
+  var isIgnoreNewlineTag = makeMap('pre,textarea', true);
+  var shouldIgnoreFirstNewline = function (tag, html) { return tag && isIgnoreNewlineTag(tag) && html[0] === '\n'; };
+
+  function decodeAttr (value, shouldDecodeNewlines) {
+    var re = shouldDecodeNewlines ? encodedAttrWithNewLines : encodedAttr;
+    return value.replace(re, function (match) { return decodingMap[match]; })
+  }
+
+  function parseHTML (html, options) {
+    var stack = [];
+    var expectHTML = options.expectHTML;
+    var isUnaryTag$$1 = options.isUnaryTag || no;
+    var canBeLeftOpenTag$$1 = options.canBeLeftOpenTag || no;
+    var index = 0;
+    var last, lastTag;
+    while (html) {
+      last = html;
+      // Make sure we're not in a plaintext content element like script/style
+      if (!lastTag || !isPlainTextElement(lastTag)) {
+        var textEnd = html.indexOf('<');
+        if (textEnd === 0) {
+          // Comment:
+          if (comment.test(html)) {
+            var commentEnd = html.indexOf('-->');
+
+            if (commentEnd >= 0) {
+              if (options.shouldKeepComment) {
+                options.comment(html.substring(4, commentEnd), index, index + commentEnd + 3);
+              }
+              advance(commentEnd + 3);
+              continue
+            }
+          }
+
+          // http://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment
+          if (conditionalComment.test(html)) {
+            var conditionalEnd = html.indexOf(']>');
+
+            if (conditionalEnd >= 0) {
+              advance(conditionalEnd + 2);
+              continue
+            }
+          }
+
+          // Doctype:
+          var doctypeMatch = html.match(doctype);
+          if (doctypeMatch) {
+            advance(doctypeMatch[0].length);
+            continue
+          }
+
+          // End tag:
+          var endTagMatch = html.match(endTag);
+          if (endTagMatch) {
+            var curIndex = index;
+            advance(endTagMatch[0].length);
+            parseEndTag(endTagMatch[1], curIndex, index);
+            continue
+          }
+
+          // Start tag:
+          var startTagMatch = parseStartTag();
+          if (startTagMatch) {
+            handleStartTag(startTagMatch);
+            if (shouldIgnoreFirstNewline(startTagMatch.tagName, html)) {
+              advance(1);
+            }
+            continue
+          }
+        }
+
+        var text = (void 0), rest = (void 0), next = (void 0);
+        if (textEnd >= 0) {
+          rest = html.slice(textEnd);
+          while (
+            !endTag.test(rest) &&
+            !startTagOpen.test(rest) &&
+            !comment.test(rest) &&
+            !conditionalComment.test(rest)
+          ) {
+            // < in plain text, be forgiving and treat it as text
+            next = rest.indexOf('<', 1);
+            if (next < 0) { break }
+            textEnd += next;
+            rest = html.slice(textEnd);
+          }
+          text = html.substring(0, textEnd);
+        }
+
+        if (textEnd < 0) {
+          text = html;
+        }
+
+        if (text) {
+          advance(text.length);
+        }
+
+        if (options.chars && text) {
+          options.chars(text, index - text.length, index);
+        }
+      } else {
+        var endTagLength = 0;
+        var stackedTag = lastTag.toLowerCase();
+        var reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)(</' + stackedTag + '[^>]*>)', 'i'));
+        var rest$1 = html.replace(reStackedTag, function (all, text, endTag) {
+          endTagLength = endTag.length;
+          if (!isPlainTextElement(stackedTag) && stackedTag !== 'noscript') {
+            text = text
+              .replace(/<!\--([\s\S]*?)-->/g, '$1') // #7298
+              .replace(/<!\[CDATA\[([\s\S]*?)]]>/g, '$1');
+          }
+          if (shouldIgnoreFirstNewline(stackedTag, text)) {
+            text = text.slice(1);
+          }
+          if (options.chars) {
+            options.chars(text);
+          }
+          return ''
+        });
+        index += html.length - rest$1.length;
+        html = rest$1;
+        parseEndTag(stackedTag, index - endTagLength, index);
+      }
+
+      if (html === last) {
+        options.chars && options.chars(html);
+        if (!stack.length && options.warn) {
+          options.warn(("Mal-formatted tag at end of template: \"" + html + "\""), { start: index + html.length });
+        }
+        break
+      }
+    }
+
+    // Clean up any remaining tags
+    parseEndTag();
+
+    function advance (n) {
+      index += n;
+      html = html.substring(n);
+    }
+
+    function parseStartTag () {
+      var start = html.match(startTagOpen);
+      if (start) {
+        var match = {
+          tagName: start[1],
+          attrs: [],
+          start: index
+        };
+        advance(start[0].length);
+        var end, attr;
+        while (!(end = html.match(startTagClose)) && (attr = html.match(dynamicArgAttribute) || html.match(attribute))) {
+          attr.start = index;
+          advance(attr[0].length);
+          attr.end = index;
+          match.attrs.push(attr);
+        }
+        if (end) {
+          match.unarySlash = end[1];
+          advance(end[0].length);
+          match.end = index;
+          return match
+        }
+      }
+    }
+
+    function handleStartTag (match) {
+      var tagName = match.tagName;
+      var unarySlash = match.unarySlash;
+
+      if (expectHTML) {
+        if (lastTag === 'p' && isNonPhrasingTag(tagName)) {
+          parseEndTag(lastTag);
+        }
+        if (canBeLeftOpenTag$$1(tagName) && lastTag === tagName) {
+          parseEndTag(tagName);
+        }
+      }
+
+      var unary = isUnaryTag$$1(tagName) || !!unarySlash;
+
+      var l = match.attrs.length;
+      var attrs = new Array(l);
+      for (var i = 0; i < l; i++) {
+        var args = match.attrs[i];
+        var value = args[3] || args[4] || args[5] || '';
+        var shouldDecodeNewlines = tagName === 'a' && args[1] === 'href'
+          ? options.shouldDecodeNewlinesForHref
+          : options.shouldDecodeNewlines;
+        attrs[i] = {
+          name: args[1],
+          value: decodeAttr(value, shouldDecodeNewlines)
+        };
+        if (options.outputSourceRange) {
+          attrs[i].start = args.start + args[0].match(/^\s*/).length;
+          attrs[i].end = args.end;
+        }
+      }
+
+      if (!unary) {
+        stack.push({ tag: tagName, lowerCasedTag: tagName.toLowerCase(), attrs: attrs, start: match.start, end: match.end });
+        lastTag = tagName;
+      }
+
+      if (options.start) {
+        options.start(tagName, attrs, unary, match.start, match.end);
+      }
+    }
+
+    function parseEndTag (tagName, start, end) {
+      var pos, lowerCasedTagName;
+      if (start == null) { start = index; }
+      if (end == null) { end = index; }
+
+      // Find the closest opened tag of the same type
+      if (tagName) {
+        lowerCasedTagName = tagName.toLowerCase();
+        for (pos = stack.length - 1; pos >= 0; pos--) {
+          if (stack[pos].lowerCasedTag === lowerCasedTagName) {
+            break
+          }
+        }
+      } else {
+        // If no tag name is provided, clean shop
+        pos = 0;
+      }
+
+      if (pos >= 0) {
+        // Close all the open elements, up the stack
+        for (var i = stack.length - 1; i >= pos; i--) {
+          if (i > pos || !tagName &&
+            options.warn
+          ) {
+            options.warn(
+              ("tag <" + (stack[i].tag) + "> has no matching end tag."),
+              { start: stack[i].start, end: stack[i].end }
+            );
+          }
+          if (options.end) {
+            options.end(stack[i].tag, start, end);
+          }
+        }
+
+        // Remove the open elements from the stack
+        stack.length = pos;
+        lastTag = pos && stack[pos - 1].tag;
+      } else if (lowerCasedTagName === 'br') {
+        if (options.start) {
+          options.start(tagName, [], true, start, end);
+        }
+      } else if (lowerCasedTagName === 'p') {
+        if (options.start) {
+          options.start(tagName, [], false, start, end);
+        }
+        if (options.end) {
+          options.end(tagName, start, end);
+        }
+      }
+    }
+  }
+
+  /*  */
+
+  var onRE = /^@|^v-on:/;
+  var dirRE = /^v-|^@|^:|^#/;
+  var forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/;
+  var forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/;
+  var stripParensRE = /^\(|\)$/g;
+  var dynamicArgRE = /^\[.*\]$/;
+
+  var argRE = /:(.*)$/;
+  var bindRE = /^:|^\.|^v-bind:/;
+  var modifierRE = /\.[^.\]]+(?=[^\]]*$)/g;
+
+  var slotRE = /^v-slot(:|$)|^#/;
+
+  var lineBreakRE = /[\r\n]/;
+  var whitespaceRE$1 = /\s+/g;
+
+  var invalidAttributeRE = /[\s"'<>\/=]/;
+
+  var decodeHTMLCached = cached(he.decode);
+
+  var emptySlotScopeToken = "_empty_";
+
+  // configurable state
+  var warn$2;
+  var delimiters;
+  var transforms;
+  var preTransforms;
+  var postTransforms;
+  var platformIsPreTag;
+  var platformMustUseProp;
+  var platformGetTagNamespace;
+  var maybeComponent;
+
+  function createASTElement (
+    tag,
+    attrs,
+    parent
+  ) {
+    return {
+      type: 1,
+      tag: tag,
+      attrsList: attrs,
+      attrsMap: makeAttrsMap(attrs),
+      rawAttrsMap: {},
+      parent: parent,
+      children: []
+    }
+  }
+
+  /**
+   * Convert HTML string to AST.
+   */
+  function parse (
+    template,
+    options
+  ) {
+    warn$2 = options.warn || baseWarn;
+
+    platformIsPreTag = options.isPreTag || no;
+    platformMustUseProp = options.mustUseProp || no;
+    platformGetTagNamespace = options.getTagNamespace || no;
+    var isReservedTag = options.isReservedTag || no;
+    maybeComponent = function (el) { return !!el.component || !isReservedTag(el.tag); };
+
+    transforms = pluckModuleFunction(options.modules, 'transformNode');
+    preTransforms = pluckModuleFunction(options.modules, 'preTransformNode');
+    postTransforms = pluckModuleFunction(options.modules, 'postTransformNode');
+
+    delimiters = options.delimiters;
+
+    var stack = [];
+    var preserveWhitespace = options.preserveWhitespace !== false;
+    var whitespaceOption = options.whitespace;
+    var root;
+    var currentParent;
+    var inVPre = false;
+    var inPre = false;
+    var warned = false;
+
+    function warnOnce (msg, range) {
+      if (!warned) {
+        warned = true;
+        warn$2(msg, range);
+      }
+    }
+
+    function closeElement (element) {
+      trimEndingWhitespace(element);
+      if (!inVPre && !element.processed) {
+        element = processElement(element, options);
+      }
+      // tree management
+      if (!stack.length && element !== root) {
+        // allow root elements with v-if, v-else-if and v-else
+        if (root.if && (element.elseif || element.else)) {
+          {
+            checkRootConstraints(element);
+          }
+          addIfCondition(root, {
+            exp: element.elseif,
+            block: element
+          });
+        } else {
+          warnOnce(
+            "Component template should contain exactly one root element. " +
+            "If you are using v-if on multiple elements, " +
+            "use v-else-if to chain them instead.",
+            { start: element.start }
+          );
+        }
+      }
+      if (currentParent && !element.forbidden) {
+        if (element.elseif || element.else) {
+          processIfConditions(element, currentParent);
+        } else {
+          if (element.slotScope) {
+            // scoped slot
+            // keep it in the children list so that v-else(-if) conditions can
+            // find it as the prev node.
+            var name = element.slotTarget || '"default"'
+            ;(currentParent.scopedSlots || (currentParent.scopedSlots = {}))[name] = element;
+          }
+          currentParent.children.push(element);
+          element.parent = currentParent;
+        }
+      }
+
+      // final children cleanup
+      // filter out scoped slots
+      element.children = element.children.filter(function (c) { return !(c).slotScope; });
+      // remove trailing whitespace node again
+      trimEndingWhitespace(element);
+
+      // check pre state
+      if (element.pre) {
+        inVPre = false;
+      }
+      if (platformIsPreTag(element.tag)) {
+        inPre = false;
+      }
+      // apply post-transforms
+      for (var i = 0; i < postTransforms.length; i++) {
+        postTransforms[i](element, options);
+      }
+    }
+
+    function trimEndingWhitespace (el) {
+      // remove trailing whitespace node
+      if (!inPre) {
+        var lastNode;
+        while (
+          (lastNode = el.children[el.children.length - 1]) &&
+          lastNode.type === 3 &&
+          lastNode.text === ' '
+        ) {
+          el.children.pop();
+        }
+      }
+    }
+
+    function checkRootConstraints (el) {
+      if (el.tag === 'slot' || el.tag === 'template') {
+        warnOnce(
+          "Cannot use <" + (el.tag) + "> as component root element because it may " +
+          'contain multiple nodes.',
+          { start: el.start }
+        );
+      }
+      if (el.attrsMap.hasOwnProperty('v-for')) {
+        warnOnce(
+          'Cannot use v-for on stateful component root element because ' +
+          'it renders multiple elements.',
+          el.rawAttrsMap['v-for']
+        );
+      }
+    }
+
+    parseHTML(template, {
+      warn: warn$2,
+      expectHTML: options.expectHTML,
+      isUnaryTag: options.isUnaryTag,
+      canBeLeftOpenTag: options.canBeLeftOpenTag,
+      shouldDecodeNewlines: options.shouldDecodeNewlines,
+      shouldDecodeNewlinesForHref: options.shouldDecodeNewlinesForHref,
+      shouldKeepComment: options.comments,
+      outputSourceRange: options.outputSourceRange,
+      start: function start (tag, attrs, unary, start$1, end) {
+        // check namespace.
+        // inherit parent ns if there is one
+        var ns = (currentParent && currentParent.ns) || platformGetTagNamespace(tag);
+
+        // handle IE svg bug
+        /* istanbul ignore if */
+        if (isIE && ns === 'svg') {
+          attrs = guardIESVGBug(attrs);
+        }
+
+        var element = createASTElement(tag, attrs, currentParent);
+        if (ns) {
+          element.ns = ns;
+        }
+
+        {
+          if (options.outputSourceRange) {
+            element.start = start$1;
+            element.end = end;
+            element.rawAttrsMap = element.attrsList.reduce(function (cumulated, attr) {
+              cumulated[attr.name] = attr;
+              return cumulated
+            }, {});
+          }
+          attrs.forEach(function (attr) {
+            if (invalidAttributeRE.test(attr.name)) {
+              warn$2(
+                "Invalid dynamic argument expression: attribute names cannot contain " +
+                "spaces, quotes, <, >, / or =.",
+                {
+                  start: attr.start + attr.name.indexOf("["),
+                  end: attr.start + attr.name.length
+                }
+              );
+            }
+          });
+        }
+
+        if (isForbiddenTag(element) && !isServerRendering()) {
+          element.forbidden = true;
+          warn$2(
+            'Templates should only be responsible for mapping the state to the ' +
+            'UI. Avoid placing tags with side-effects in your templates, such as ' +
+            "<" + tag + ">" + ', as they will not be parsed.',
+            { start: element.start }
+          );
+        }
+
+        // apply pre-transforms
+        for (var i = 0; i < preTransforms.length; i++) {
+          element = preTransforms[i](element, options) || element;
+        }
+
+        if (!inVPre) {
+          processPre(element);
+          if (element.pre) {
+            inVPre = true;
+          }
+        }
+        if (platformIsPreTag(element.tag)) {
+          inPre = true;
+        }
+        if (inVPre) {
+          processRawAttrs(element);
+        } else if (!element.processed) {
+          // structural directives
+          processFor(element);
+          processIf(element);
+          processOnce(element);
+        }
+
+        if (!root) {
+          root = element;
+          {
+            checkRootConstraints(root);
+          }
+        }
+
+        if (!unary) {
+          currentParent = element;
+          stack.push(element);
+        } else {
+          closeElement(element);
+        }
+      },
+
+      end: function end (tag, start, end$1) {
+        var element = stack[stack.length - 1];
+        // pop stack
+        stack.length -= 1;
+        currentParent = stack[stack.length - 1];
+        if (options.outputSourceRange) {
+          element.end = end$1;
+        }
+        closeElement(element);
+      },
+
+      chars: function chars (text, start, end) {
+        if (!currentParent) {
+          {
+            if (text === template) {
+              warnOnce(
+                'Component template requires a root element, rather than just text.',
+                { start: start }
+              );
+            } else if ((text = text.trim())) {
+              warnOnce(
+                ("text \"" + text + "\" outside root element will be ignored."),
+                { start: start }
+              );
+            }
+          }
+          return
+        }
+        // IE textarea placeholder bug
+        /* istanbul ignore if */
+        if (isIE &&
+          currentParent.tag === 'textarea' &&
+          currentParent.attrsMap.placeholder === text
+        ) {
+          return
+        }
+        var children = currentParent.children;
+        if (inPre || text.trim()) {
+          text = isTextTag(currentParent) ? text : decodeHTMLCached(text);
+        } else if (!children.length) {
+          // remove the whitespace-only node right after an opening tag
+          text = '';
+        } else if (whitespaceOption) {
+          if (whitespaceOption === 'condense') {
+            // in condense mode, remove the whitespace node if it contains
+            // line break, otherwise condense to a single space
+            text = lineBreakRE.test(text) ? '' : ' ';
+          } else {
+            text = ' ';
+          }
+        } else {
+          text = preserveWhitespace ? ' ' : '';
+        }
+        if (text) {
+          if (!inPre && whitespaceOption === 'condense') {
+            // condense consecutive whitespaces into single space
+            text = text.replace(whitespaceRE$1, ' ');
+          }
+          var res;
+          var child;
+          if (!inVPre && text !== ' ' && (res = parseText(text, delimiters))) {
+            child = {
+              type: 2,
+              expression: res.expression,
+              tokens: res.tokens,
+              text: text
+            };
+          } else if (text !== ' ' || !children.length || children[children.length - 1].text !== ' ') {
+            child = {
+              type: 3,
+              text: text
+            };
+          }
+          if (child) {
+            if (options.outputSourceRange) {
+              child.start = start;
+              child.end = end;
+            }
+            children.push(child);
+          }
+        }
+      },
+      comment: function comment (text, start, end) {
+        // adding anything as a sibling to the root node is forbidden
+        // comments should still be allowed, but ignored
+        if (currentParent) {
+          var child = {
+            type: 3,
+            text: text,
+            isComment: true
+          };
+          if (options.outputSourceRange) {
+            child.start = start;
+            child.end = end;
+          }
+          currentParent.children.push(child);
+        }
+      }
+    });
+    return root
+  }
+
+  function processPre (el) {
+    if (getAndRemoveAttr(el, 'v-pre') != null) {
+      el.pre = true;
+    }
+  }
+
+  function processRawAttrs (el) {
+    var list = el.attrsList;
+    var len = list.length;
+    if (len) {
+      var attrs = el.attrs = new Array(len);
+      for (var i = 0; i < len; i++) {
+        attrs[i] = {
+          name: list[i].name,
+          value: JSON.stringify(list[i].value)
+        };
+        if (list[i].start != null) {
+          attrs[i].start = list[i].start;
+          attrs[i].end = list[i].end;
+        }
+      }
+    } else if (!el.pre) {
+      // non root node in pre blocks with no attributes
+      el.plain = true;
+    }
+  }
+
+  function processElement (
+    element,
+    options
+  ) {
+    processKey(element);
+
+    // determine whether this is a plain element after
+    // removing structural attributes
+    element.plain = (
+      !element.key &&
+      !element.scopedSlots &&
+      !element.attrsList.length
+    );
+
+    processRef(element);
+    processSlotContent(element);
+    processSlotOutlet(element);
+    processComponent(element);
+    for (var i = 0; i < transforms.length; i++) {
+      element = transforms[i](element, options) || element;
+    }
+    processAttrs(element);
+    return element
+  }
+
+  function processKey (el) {
+    var exp = getBindingAttr(el, 'key');
+    if (exp) {
+      {
+        if (el.tag === 'template') {
+          warn$2(
+            "<template> cannot be keyed. Place the key on real elements instead.",
+            getRawBindingAttr(el, 'key')
+          );
+        }
+        if (el.for) {
+          var iterator = el.iterator2 || el.iterator1;
+          var parent = el.parent;
+          if (iterator && iterator === exp && parent && parent.tag === 'transition-group') {
+            warn$2(
+              "Do not use v-for index as key on <transition-group> children, " +
+              "this is the same as not using keys.",
+              getRawBindingAttr(el, 'key'),
+              true /* tip */
+            );
+          }
+        }
+      }
+      el.key = exp;
+    }
+  }
+
+  function processRef (el) {
+    var ref = getBindingAttr(el, 'ref');
+    if (ref) {
+      el.ref = ref;
+      el.refInFor = checkInFor(el);
+    }
+  }
+
+  function processFor (el) {
+    var exp;
+    if ((exp = getAndRemoveAttr(el, 'v-for'))) {
+      var res = parseFor(exp);
+      if (res) {
+        extend(el, res);
+      } else {
+        warn$2(
+          ("Invalid v-for expression: " + exp),
+          el.rawAttrsMap['v-for']
+        );
+      }
+    }
+  }
+
+
+
+  function parseFor (exp) {
+    var inMatch = exp.match(forAliasRE);
+    if (!inMatch) { return }
+    var res = {};
+    res.for = inMatch[2].trim();
+    var alias = inMatch[1].trim().replace(stripParensRE, '');
+    var iteratorMatch = alias.match(forIteratorRE);
+    if (iteratorMatch) {
+      res.alias = alias.replace(forIteratorRE, '').trim();
+      res.iterator1 = iteratorMatch[1].trim();
+      if (iteratorMatch[2]) {
+        res.iterator2 = iteratorMatch[2].trim();
+      }
+    } else {
+      res.alias = alias;
+    }
+    return res
+  }
+
+  function processIf (el) {
+    var exp = getAndRemoveAttr(el, 'v-if');
+    if (exp) {
+      el.if = exp;
+      addIfCondition(el, {
+        exp: exp,
+        block: el
+      });
+    } else {
+      if (getAndRemoveAttr(el, 'v-else') != null) {
+        el.else = true;
+      }
+      var elseif = getAndRemoveAttr(el, 'v-else-if');
+      if (elseif) {
+        el.elseif = elseif;
+      }
+    }
+  }
+
+  function processIfConditions (el, parent) {
+    var prev = findPrevElement(parent.children);
+    if (prev && prev.if) {
+      addIfCondition(prev, {
+        exp: el.elseif,
+        block: el
+      });
+    } else {
+      warn$2(
+        "v-" + (el.elseif ? ('else-if="' + el.elseif + '"') : 'else') + " " +
+        "used on element <" + (el.tag) + "> without corresponding v-if.",
+        el.rawAttrsMap[el.elseif ? 'v-else-if' : 'v-else']
+      );
+    }
+  }
+
+  function findPrevElement (children) {
+    var i = children.length;
+    while (i--) {
+      if (children[i].type === 1) {
+        return children[i]
+      } else {
+        if (children[i].text !== ' ') {
+          warn$2(
+            "text \"" + (children[i].text.trim()) + "\" between v-if and v-else(-if) " +
+            "will be ignored.",
+            children[i]
+          );
+        }
+        children.pop();
+      }
+    }
+  }
+
+  function addIfCondition (el, condition) {
+    if (!el.ifConditions) {
+      el.ifConditions = [];
+    }
+    el.ifConditions.push(condition);
+  }
+
+  function processOnce (el) {
+    var once$$1 = getAndRemoveAttr(el, 'v-once');
+    if (once$$1 != null) {
+      el.once = true;
+    }
+  }
+
+  // handle content being passed to a component as slot,
+  // e.g. <template slot="xxx">, <div slot-scope="xxx">
+  function processSlotContent (el) {
+    var slotScope;
+    if (el.tag === 'template') {
+      slotScope = getAndRemoveAttr(el, 'scope');
+      /* istanbul ignore if */
+      if (slotScope) {
+        warn$2(
+          "the \"scope\" attribute for scoped slots have been deprecated and " +
+          "replaced by \"slot-scope\" since 2.5. The new \"slot-scope\" attribute " +
+          "can also be used on plain elements in addition to <template> to " +
+          "denote scoped slots.",
+          el.rawAttrsMap['scope'],
+          true
+        );
+      }
+      el.slotScope = slotScope || getAndRemoveAttr(el, 'slot-scope');
+    } else if ((slotScope = getAndRemoveAttr(el, 'slot-scope'))) {
+      /* istanbul ignore if */
+      if (el.attrsMap['v-for']) {
+        warn$2(
+          "Ambiguous combined usage of slot-scope and v-for on <" + (el.tag) + "> " +
+          "(v-for takes higher priority). Use a wrapper <template> for the " +
+          "scoped slot to make it clearer.",
+          el.rawAttrsMap['slot-scope'],
+          true
+        );
+      }
+      el.slotScope = slotScope;
+    }
+
+    // slot="xxx"
+    var slotTarget = getBindingAttr(el, 'slot');
+    if (slotTarget) {
+      el.slotTarget = slotTarget === '""' ? '"default"' : slotTarget;
+      el.slotTargetDynamic = !!(el.attrsMap[':slot'] || el.attrsMap['v-bind:slot']);
+      // preserve slot as an attribute for native shadow DOM compat
+      // only for non-scoped slots.
+      if (el.tag !== 'template' && !el.slotScope) {
+        addAttr(el, 'slot', slotTarget, getRawBindingAttr(el, 'slot'));
+      }
+    }
+
+    // 2.6 v-slot syntax
+    {
+      if (el.tag === 'template') {
+        // v-slot on <template>
+        var slotBinding = getAndRemoveAttrByRegex(el, slotRE);
+        if (slotBinding) {
+          {
+            if (el.slotTarget || el.slotScope) {
+              warn$2(
+                "Unexpected mixed usage of different slot syntaxes.",
+                el
+              );
+            }
+            if (el.parent && !maybeComponent(el.parent)) {
+              warn$2(
+                "<template v-slot> can only appear at the root level inside " +
+                "the receiving component",
+                el
+              );
+            }
+          }
+          var ref = getSlotName(slotBinding);
+          var name = ref.name;
+          var dynamic = ref.dynamic;
+          el.slotTarget = name;
+          el.slotTargetDynamic = dynamic;
+          el.slotScope = slotBinding.value || emptySlotScopeToken; // force it into a scoped slot for perf
+        }
+      } else {
+        // v-slot on component, denotes default slot
+        var slotBinding$1 = getAndRemoveAttrByRegex(el, slotRE);
+        if (slotBinding$1) {
+          {
+            if (!maybeComponent(el)) {
+              warn$2(
+                "v-slot can only be used on components or <template>.",
+                slotBinding$1
+              );
+            }
+            if (el.slotScope || el.slotTarget) {
+              warn$2(
+                "Unexpected mixed usage of different slot syntaxes.",
+                el
+              );
+            }
+            if (el.scopedSlots) {
+              warn$2(
+                "To avoid scope ambiguity, the default slot should also use " +
+                "<template> syntax when there are other named slots.",
+                slotBinding$1
+              );
+            }
+          }
+          // add the component's children to its default slot
+          var slots = el.scopedSlots || (el.scopedSlots = {});
+          var ref$1 = getSlotName(slotBinding$1);
+          var name$1 = ref$1.name;
+          var dynamic$1 = ref$1.dynamic;
+          var slotContainer = slots[name$1] = createASTElement('template', [], el);
+          slotContainer.slotTarget = name$1;
+          slotContainer.slotTargetDynamic = dynamic$1;
+          slotContainer.children = el.children.filter(function (c) {
+            if (!c.slotScope) {
+              c.parent = slotContainer;
+              return true
+            }
+          });
+          slotContainer.slotScope = slotBinding$1.value || emptySlotScopeToken;
+          // remove children as they are returned from scopedSlots now
+          el.children = [];
+          // mark el non-plain so data gets generated
+          el.plain = false;
+        }
+      }
+    }
+  }
+
+  function getSlotName (binding) {
+    var name = binding.name.replace(slotRE, '');
+    if (!name) {
+      if (binding.name[0] !== '#') {
+        name = 'default';
+      } else {
+        warn$2(
+          "v-slot shorthand syntax requires a slot name.",
+          binding
+        );
+      }
+    }
+    return dynamicArgRE.test(name)
+      // dynamic [name]
+      ? { name: name.slice(1, -1), dynamic: true }
+      // static name
+      : { name: ("\"" + name + "\""), dynamic: false }
+  }
+
+  // handle <slot/> outlets
+  function processSlotOutlet (el) {
+    if (el.tag === 'slot') {
+      el.slotName = getBindingAttr(el, 'name');
+      if (el.key) {
+        warn$2(
+          "`key` does not work on <slot> because slots are abstract outlets " +
+          "and can possibly expand into multiple elements. " +
+          "Use the key on a wrapping element instead.",
+          getRawBindingAttr(el, 'key')
+        );
+      }
+    }
+  }
+
+  function processComponent (el) {
+    var binding;
+    if ((binding = getBindingAttr(el, 'is'))) {
+      el.component = binding;
+    }
+    if (getAndRemoveAttr(el, 'inline-template') != null) {
+      el.inlineTemplate = true;
+    }
+  }
+
+  function processAttrs (el) {
+    var list = el.attrsList;
+    var i, l, name, rawName, value, modifiers, syncGen, isDynamic;
+    for (i = 0, l = list.length; i < l; i++) {
+      name = rawName = list[i].name;
+      value = list[i].value;
+      if (dirRE.test(name)) {
+        // mark element as dynamic
+        el.hasBindings = true;
+        // modifiers
+        modifiers = parseModifiers(name.replace(dirRE, ''));
+        // support .foo shorthand syntax for the .prop modifier
+        if (modifiers) {
+          name = name.replace(modifierRE, '');
+        }
+        if (bindRE.test(name)) { // v-bind
+          name = name.replace(bindRE, '');
+          value = parseFilters(value);
+          isDynamic = dynamicArgRE.test(name);
+          if (isDynamic) {
+            name = name.slice(1, -1);
+          }
+          if (
+            value.trim().length === 0
+          ) {
+            warn$2(
+              ("The value for a v-bind expression cannot be empty. Found in \"v-bind:" + name + "\"")
+            );
+          }
+          if (modifiers) {
+            if (modifiers.prop && !isDynamic) {
+              name = camelize(name);
+              if (name === 'innerHtml') { name = 'innerHTML'; }
+            }
+            if (modifiers.camel && !isDynamic) {
+              name = camelize(name);
+            }
+            if (modifiers.sync) {
+              syncGen = genAssignmentCode(value, "$event");
+              if (!isDynamic) {
+                addHandler(
+                  el,
+                  ("update:" + (camelize(name))),
+                  syncGen,
+                  null,
+                  false,
+                  warn$2,
+                  list[i]
+                );
+                if (hyphenate(name) !== camelize(name)) {
+                  addHandler(
+                    el,
+                    ("update:" + (hyphenate(name))),
+                    syncGen,
+                    null,
+                    false,
+                    warn$2,
+                    list[i]
+                  );
+                }
+              } else {
+                // handler w/ dynamic event name
+                addHandler(
+                  el,
+                  ("\"update:\"+(" + name + ")"),
+                  syncGen,
+                  null,
+                  false,
+                  warn$2,
+                  list[i],
+                  true // dynamic
+                );
+              }
+            }
+          }
+          if ((modifiers && modifiers.prop) || (
+            !el.component && platformMustUseProp(el.tag, el.attrsMap.type, name)
+          )) {
+            addProp(el, name, value, list[i], isDynamic);
+          } else {
+            addAttr(el, name, value, list[i], isDynamic);
+          }
+        } else if (onRE.test(name)) { // v-on
+          name = name.replace(onRE, '');
+          isDynamic = dynamicArgRE.test(name);
+          if (isDynamic) {
+            name = name.slice(1, -1);
+          }
+          addHandler(el, name, value, modifiers, false, warn$2, list[i], isDynamic);
+        } else { // normal directives
+          name = name.replace(dirRE, '');
+          // parse arg
+          var argMatch = name.match(argRE);
+          var arg = argMatch && argMatch[1];
+          isDynamic = false;
+          if (arg) {
+            name = name.slice(0, -(arg.length + 1));
+            if (dynamicArgRE.test(arg)) {
+              arg = arg.slice(1, -1);
+              isDynamic = true;
+            }
+          }
+          addDirective(el, name, rawName, value, arg, isDynamic, modifiers, list[i]);
+          if (name === 'model') {
+            checkForAliasModel(el, value);
+          }
+        }
+      } else {
+        // literal attribute
+        {
+          var res = parseText(value, delimiters);
+          if (res) {
+            warn$2(
+              name + "=\"" + value + "\": " +
+              'Interpolation inside attributes has been removed. ' +
+              'Use v-bind or the colon shorthand instead. For example, ' +
+              'instead of <div id="{{ val }}">, use <div :id="val">.',
+              list[i]
+            );
+          }
+        }
+        addAttr(el, name, JSON.stringify(value), list[i]);
+        // #6887 firefox doesn't update muted state if set via attribute
+        // even immediately after element creation
+        if (!el.component &&
+            name === 'muted' &&
+            platformMustUseProp(el.tag, el.attrsMap.type, name)) {
+          addProp(el, name, 'true', list[i]);
+        }
+      }
+    }
+  }
+
+  function checkInFor (el) {
+    var parent = el;
+    while (parent) {
+      if (parent.for !== undefined) {
+        return true
+      }
+      parent = parent.parent;
+    }
+    return false
+  }
+
+  function parseModifiers (name) {
+    var match = name.match(modifierRE);
+    if (match) {
+      var ret = {};
+      match.forEach(function (m) { ret[m.slice(1)] = true; });
+      return ret
+    }
+  }
+
+  function makeAttrsMap (attrs) {
+    var map = {};
+    for (var i = 0, l = attrs.length; i < l; i++) {
+      if (
+        map[attrs[i].name] && !isIE && !isEdge
+      ) {
+        warn$2('duplicate attribute: ' + attrs[i].name, attrs[i]);
+      }
+      map[attrs[i].name] = attrs[i].value;
+    }
+    return map
+  }
+
+  // for script (e.g. type="x/template") or style, do not decode content
+  function isTextTag (el) {
+    return el.tag === 'script' || el.tag === 'style'
+  }
+
+  function isForbiddenTag (el) {
+    return (
+      el.tag === 'style' ||
+      (el.tag === 'script' && (
+        !el.attrsMap.type ||
+        el.attrsMap.type === 'text/javascript'
+      ))
+    )
+  }
+
+  var ieNSBug = /^xmlns:NS\d+/;
+  var ieNSPrefix = /^NS\d+:/;
+
+  /* istanbul ignore next */
+  function guardIESVGBug (attrs) {
+    var res = [];
+    for (var i = 0; i < attrs.length; i++) {
+      var attr = attrs[i];
+      if (!ieNSBug.test(attr.name)) {
+        attr.name = attr.name.replace(ieNSPrefix, '');
+        res.push(attr);
+      }
+    }
+    return res
+  }
+
+  function checkForAliasModel (el, value) {
+    var _el = el;
+    while (_el) {
+      if (_el.for && _el.alias === value) {
+        warn$2(
+          "<" + (el.tag) + " v-model=\"" + value + "\">: " +
+          "You are binding v-model directly to a v-for iteration alias. " +
+          "This will not be able to modify the v-for source array because " +
+          "writing to the alias is like modifying a function local variable. " +
+          "Consider using an array of objects and use v-model on an object property instead.",
+          el.rawAttrsMap['v-model']
+        );
+      }
+      _el = _el.parent;
+    }
+  }
+
+  /*  */
+
+  function preTransformNode (el, options) {
+    if (el.tag === 'input') {
+      var map = el.attrsMap;
+      if (!map['v-model']) {
+        return
+      }
+
+      var typeBinding;
+      if (map[':type'] || map['v-bind:type']) {
+        typeBinding = getBindingAttr(el, 'type');
+      }
+      if (!map.type && !typeBinding && map['v-bind']) {
+        typeBinding = "(" + (map['v-bind']) + ").type";
+      }
+
+      if (typeBinding) {
+        var ifCondition = getAndRemoveAttr(el, 'v-if', true);
+        var ifConditionExtra = ifCondition ? ("&&(" + ifCondition + ")") : "";
+        var hasElse = getAndRemoveAttr(el, 'v-else', true) != null;
+        var elseIfCondition = getAndRemoveAttr(el, 'v-else-if', true);
+        // 1. checkbox
+        var branch0 = cloneASTElement(el);
+        // process for on the main node
+        processFor(branch0);
+        addRawAttr(branch0, 'type', 'checkbox');
+        processElement(branch0, options);
+        branch0.processed = true; // prevent it from double-processed
+        branch0.if = "(" + typeBinding + ")==='checkbox'" + ifConditionExtra;
+        addIfCondition(branch0, {
+          exp: branch0.if,
+          block: branch0
+        });
+        // 2. add radio else-if condition
+        var branch1 = cloneASTElement(el);
+        getAndRemoveAttr(branch1, 'v-for', true);
+        addRawAttr(branch1, 'type', 'radio');
+        processElement(branch1, options);
+        addIfCondition(branch0, {
+          exp: "(" + typeBinding + ")==='radio'" + ifConditionExtra,
+          block: branch1
+        });
+        // 3. other
+        var branch2 = cloneASTElement(el);
+        getAndRemoveAttr(branch2, 'v-for', true);
+        addRawAttr(branch2, ':type', typeBinding);
+        processElement(branch2, options);
+        addIfCondition(branch0, {
+          exp: ifCondition,
+          block: branch2
+        });
+
+        if (hasElse) {
+          branch0.else = true;
+        } else if (elseIfCondition) {
+          branch0.elseif = elseIfCondition;
+        }
+
+        return branch0
+      }
+    }
+  }
+
+  function cloneASTElement (el) {
+    return createASTElement(el.tag, el.attrsList.slice(), el.parent)
+  }
+
+  var model$1 = {
+    preTransformNode: preTransformNode
+  };
+
+  var modules$1 = [
+    klass$1,
+    style$1,
+    model$1
+  ];
+
+  /*  */
+
+  function text (el, dir) {
+    if (dir.value) {
+      addProp(el, 'textContent', ("_s(" + (dir.value) + ")"), dir);
+    }
+  }
+
+  /*  */
+
+  function html (el, dir) {
+    if (dir.value) {
+      addProp(el, 'innerHTML', ("_s(" + (dir.value) + ")"), dir);
+    }
+  }
+
+  var directives$1 = {
+    model: model,
+    text: text,
+    html: html
+  };
+
+  /*  */
+
+  var baseOptions = {
+    expectHTML: true,
+    modules: modules$1,
+    directives: directives$1,
+    isPreTag: isPreTag,
+    isUnaryTag: isUnaryTag,
+    mustUseProp: mustUseProp,
+    canBeLeftOpenTag: canBeLeftOpenTag,
+    isReservedTag: isReservedTag,
+    getTagNamespace: getTagNamespace,
+    staticKeys: genStaticKeys(modules$1)
+  };
+
+  /*  */
+
+  var isStaticKey;
+  var isPlatformReservedTag;
+
+  var genStaticKeysCached = cached(genStaticKeys$1);
+
+  /**
+   * Goal of the optimizer: walk the generated template AST tree
+   * and detect sub-trees that are purely static, i.e. parts of
+   * the DOM that never needs to change.
+   *
+   * Once we detect these sub-trees, we can:
+   *
+   * 1. Hoist them into constants, so that we no longer need to
+   *    create fresh nodes for them on each re-render;
+   * 2. Completely skip them in the patching process.
+   */
+  function optimize (root, options) {
+    if (!root) { return }
+    isStaticKey = genStaticKeysCached(options.staticKeys || '');
+    isPlatformReservedTag = options.isReservedTag || no;
+    // first pass: mark all non-static nodes.
+    markStatic$1(root);
+    // second pass: mark static roots.
+    markStaticRoots(root, false);
+  }
+
+  function genStaticKeys$1 (keys) {
+    return makeMap(
+      'type,tag,attrsList,attrsMap,plain,parent,children,attrs,start,end,rawAttrsMap' +
+      (keys ? ',' + keys : '')
+    )
+  }
+
+  function markStatic$1 (node) {
+    node.static = isStatic(node);
+    if (node.type === 1) {
+      // do not make component slot content static. this avoids
+      // 1. components not able to mutate slot nodes
+      // 2. static slot content fails for hot-reloading
+      if (
+        !isPlatformReservedTag(node.tag) &&
+        node.tag !== 'slot' &&
+        node.attrsMap['inline-template'] == null
+      ) {
+        return
+      }
+      for (var i = 0, l = node.children.length; i < l; i++) {
+        var child = node.children[i];
+        markStatic$1(child);
+        if (!child.static) {
+          node.static = false;
+        }
+      }
+      if (node.ifConditions) {
+        for (var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
+          var block = node.ifConditions[i$1].block;
+          markStatic$1(block);
+          if (!block.static) {
+            node.static = false;
+          }
+        }
+      }
+    }
+  }
+
+  function markStaticRoots (node, isInFor) {
+    if (node.type === 1) {
+      if (node.static || node.once) {
+        node.staticInFor = isInFor;
+      }
+      // For a node to qualify as a static root, it should have children that
+      // are not just static text. Otherwise the cost of hoisting out will
+      // outweigh the benefits and it's better off to just always render it fresh.
+      if (node.static && node.children.length && !(
+        node.children.length === 1 &&
+        node.children[0].type === 3
+      )) {
+        node.staticRoot = true;
+        return
+      } else {
+        node.staticRoot = false;
+      }
+      if (node.children) {
+        for (var i = 0, l = node.children.length; i < l; i++) {
+          markStaticRoots(node.children[i], isInFor || !!node.for);
+        }
+      }
+      if (node.ifConditions) {
+        for (var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
+          markStaticRoots(node.ifConditions[i$1].block, isInFor);
+        }
+      }
+    }
+  }
+
+  function isStatic (node) {
+    if (node.type === 2) { // expression
+      return false
+    }
+    if (node.type === 3) { // text
+      return true
+    }
+    return !!(node.pre || (
+      !node.hasBindings && // no dynamic bindings
+      !node.if && !node.for && // not v-if or v-for or v-else
+      !isBuiltInTag(node.tag) && // not a built-in
+      isPlatformReservedTag(node.tag) && // not a component
+      !isDirectChildOfTemplateFor(node) &&
+      Object.keys(node).every(isStaticKey)
+    ))
+  }
+
+  function isDirectChildOfTemplateFor (node) {
+    while (node.parent) {
+      node = node.parent;
+      if (node.tag !== 'template') {
+        return false
+      }
+      if (node.for) {
+        return true
+      }
+    }
+    return false
+  }
+
+  /*  */
+
+  var fnExpRE = /^([\w$_]+|\([^)]*?\))\s*=>|^function(?:\s+[\w$]+)?\s*\(/;
+  var fnInvokeRE = /\([^)]*?\);*$/;
+  var simplePathRE = /^[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['[^']*?']|\["[^"]*?"]|\[\d+]|\[[A-Za-z_$][\w$]*])*$/;
+
+  // KeyboardEvent.keyCode aliases
+  var keyCodes = {
+    esc: 27,
+    tab: 9,
+    enter: 13,
+    space: 32,
+    up: 38,
+    left: 37,
+    right: 39,
+    down: 40,
+    'delete': [8, 46]
+  };
+
+  // KeyboardEvent.key aliases
+  var keyNames = {
+    // #7880: IE11 and Edge use `Esc` for Escape key name.
+    esc: ['Esc', 'Escape'],
+    tab: 'Tab',
+    enter: 'Enter',
+    // #9112: IE11 uses `Spacebar` for Space key name.
+    space: [' ', 'Spacebar'],
+    // #7806: IE11 uses key names without `Arrow` prefix for arrow keys.
+    up: ['Up', 'ArrowUp'],
+    left: ['Left', 'ArrowLeft'],
+    right: ['Right', 'ArrowRight'],
+    down: ['Down', 'ArrowDown'],
+    // #9112: IE11 uses `Del` for Delete key name.
+    'delete': ['Backspace', 'Delete', 'Del']
+  };
+
+  // #4868: modifiers that prevent the execution of the listener
+  // need to explicitly return null so that we can determine whether to remove
+  // the listener for .once
+  var genGuard = function (condition) { return ("if(" + condition + ")return null;"); };
+
+  var modifierCode = {
+    stop: '$event.stopPropagation();',
+    prevent: '$event.preventDefault();',
+    self: genGuard("$event.target !== $event.currentTarget"),
+    ctrl: genGuard("!$event.ctrlKey"),
+    shift: genGuard("!$event.shiftKey"),
+    alt: genGuard("!$event.altKey"),
+    meta: genGuard("!$event.metaKey"),
+    left: genGuard("'button' in $event && $event.button !== 0"),
+    middle: genGuard("'button' in $event && $event.button !== 1"),
+    right: genGuard("'button' in $event && $event.button !== 2")
+  };
+
+  function genHandlers (
+    events,
+    isNative
+  ) {
+    var prefix = isNative ? 'nativeOn:' : 'on:';
+    var staticHandlers = "";
+    var dynamicHandlers = "";
+    for (var name in events) {
+      var handlerCode = genHandler(events[name]);
+      if (events[name] && events[name].dynamic) {
+        dynamicHandlers += name + "," + handlerCode + ",";
+      } else {
+        staticHandlers += "\"" + name + "\":" + handlerCode + ",";
+      }
+    }
+    staticHandlers = "{" + (staticHandlers.slice(0, -1)) + "}";
+    if (dynamicHandlers) {
+      return prefix + "_d(" + staticHandlers + ",[" + (dynamicHandlers.slice(0, -1)) + "])"
+    } else {
+      return prefix + staticHandlers
+    }
+  }
+
+  function genHandler (handler) {
+    if (!handler) {
+      return 'function(){}'
+    }
+
+    if (Array.isArray(handler)) {
+      return ("[" + (handler.map(function (handler) { return genHandler(handler); }).join(',')) + "]")
+    }
+
+    var isMethodPath = simplePathRE.test(handler.value);
+    var isFunctionExpression = fnExpRE.test(handler.value);
+    var isFunctionInvocation = simplePathRE.test(handler.value.replace(fnInvokeRE, ''));
+
+    if (!handler.modifiers) {
+      if (isMethodPath || isFunctionExpression) {
+        return handler.value
+      }
+      return ("function($event){" + (isFunctionInvocation ? ("return " + (handler.value)) : handler.value) + "}") // inline statement
+    } else {
+      var code = '';
+      var genModifierCode = '';
+      var keys = [];
+      for (var key in handler.modifiers) {
+        if (modifierCode[key]) {
+          genModifierCode += modifierCode[key];
+          // left/right
+          if (keyCodes[key]) {
+            keys.push(key);
+          }
+        } else if (key === 'exact') {
+          var modifiers = (handler.modifiers);
+          genModifierCode += genGuard(
+            ['ctrl', 'shift', 'alt', 'meta']
+              .filter(function (keyModifier) { return !modifiers[keyModifier]; })
+              .map(function (keyModifier) { return ("$event." + keyModifier + "Key"); })
+              .join('||')
+          );
+        } else {
+          keys.push(key);
+        }
+      }
+      if (keys.length) {
+        code += genKeyFilter(keys);
+      }
+      // Make sure modifiers like prevent and stop get executed after key filtering
+      if (genModifierCode) {
+        code += genModifierCode;
+      }
+      var handlerCode = isMethodPath
+        ? ("return " + (handler.value) + "($event)")
+        : isFunctionExpression
+          ? ("return (" + (handler.value) + ")($event)")
+          : isFunctionInvocation
+            ? ("return " + (handler.value))
+            : handler.value;
+      return ("function($event){" + code + handlerCode + "}")
+    }
+  }
+
+  function genKeyFilter (keys) {
+    return (
+      // make sure the key filters only apply to KeyboardEvents
+      // #9441: can't use 'keyCode' in $event because Chrome autofill fires fake
+      // key events that do not have keyCode property...
+      "if(!$event.type.indexOf('key')&&" +
+      (keys.map(genFilterCode).join('&&')) + ")return null;"
+    )
+  }
+
+  function genFilterCode (key) {
+    var keyVal = parseInt(key, 10);
+    if (keyVal) {
+      return ("$event.keyCode!==" + keyVal)
+    }
+    var keyCode = keyCodes[key];
+    var keyName = keyNames[key];
+    return (
+      "_k($event.keyCode," +
+      (JSON.stringify(key)) + "," +
+      (JSON.stringify(keyCode)) + "," +
+      "$event.key," +
+      "" + (JSON.stringify(keyName)) +
+      ")"
+    )
+  }
+
+  /*  */
+
+  function on (el, dir) {
+    if (dir.modifiers) {
+      warn("v-on without argument does not support modifiers.");
+    }
+    el.wrapListeners = function (code) { return ("_g(" + code + "," + (dir.value) + ")"); };
+  }
+
+  /*  */
+
+  function bind$1 (el, dir) {
+    el.wrapData = function (code) {
+      return ("_b(" + code + ",'" + (el.tag) + "'," + (dir.value) + "," + (dir.modifiers && dir.modifiers.prop ? 'true' : 'false') + (dir.modifiers && dir.modifiers.sync ? ',true' : '') + ")")
+    };
+  }
+
+  /*  */
+
+  var baseDirectives = {
+    on: on,
+    bind: bind$1,
+    cloak: noop
+  };
+
+  /*  */
+
+
+
+
+
+  var CodegenState = function CodegenState (options) {
+    this.options = options;
+    this.warn = options.warn || baseWarn;
+    this.transforms = pluckModuleFunction(options.modules, 'transformCode');
+    this.dataGenFns = pluckModuleFunction(options.modules, 'genData');
+    this.directives = extend(extend({}, baseDirectives), options.directives);
+    var isReservedTag = options.isReservedTag || no;
+    this.maybeComponent = function (el) { return !!el.component || !isReservedTag(el.tag); };
+    this.onceId = 0;
+    this.staticRenderFns = [];
+    this.pre = false;
+  };
+
+
+
+  function generate (
+    ast,
+    options
+  ) {
+    var state = new CodegenState(options);
+    var code = ast ? genElement(ast, state) : '_c("div")';
+    return {
+      render: ("with(this){return " + code + "}"),
+      staticRenderFns: state.staticRenderFns
+    }
+  }
+
+  function genElement (el, state) {
+    if (el.parent) {
+      el.pre = el.pre || el.parent.pre;
+    }
+
+    if (el.staticRoot && !el.staticProcessed) {
+      return genStatic(el, state)
+    } else if (el.once && !el.onceProcessed) {
+      return genOnce(el, state)
+    } else if (el.for && !el.forProcessed) {
+      return genFor(el, state)
+    } else if (el.if && !el.ifProcessed) {
+      return genIf(el, state)
+    } else if (el.tag === 'template' && !el.slotTarget && !state.pre) {
+      return genChildren(el, state) || 'void 0'
+    } else if (el.tag === 'slot') {
+      return genSlot(el, state)
+    } else {
+      // component or element
+      var code;
+      if (el.component) {
+        code = genComponent(el.component, el, state);
+      } else {
+        var data;
+        if (!el.plain || (el.pre && state.maybeComponent(el))) {
+          data = genData$2(el, state);
+        }
+
+        var children = el.inlineTemplate ? null : genChildren(el, state, true);
+        code = "_c('" + (el.tag) + "'" + (data ? ("," + data) : '') + (children ? ("," + children) : '') + ")";
+      }
+      // module transforms
+      for (var i = 0; i < state.transforms.length; i++) {
+        code = state.transforms[i](el, code);
+      }
+      return code
+    }
+  }
+
+  // hoist static sub-trees out
+  function genStatic (el, state) {
+    el.staticProcessed = true;
+    // Some elements (templates) need to behave differently inside of a v-pre
+    // node.  All pre nodes are static roots, so we can use this as a location to
+    // wrap a state change and reset it upon exiting the pre node.
+    var originalPreState = state.pre;
+    if (el.pre) {
+      state.pre = el.pre;
+    }
+    state.staticRenderFns.push(("with(this){return " + (genElement(el, state)) + "}"));
+    state.pre = originalPreState;
+    return ("_m(" + (state.staticRenderFns.length - 1) + (el.staticInFor ? ',true' : '') + ")")
+  }
+
+  // v-once
+  function genOnce (el, state) {
+    el.onceProcessed = true;
+    if (el.if && !el.ifProcessed) {
+      return genIf(el, state)
+    } else if (el.staticInFor) {
+      var key = '';
+      var parent = el.parent;
+      while (parent) {
+        if (parent.for) {
+          key = parent.key;
+          break
+        }
+        parent = parent.parent;
+      }
+      if (!key) {
+        state.warn(
+          "v-once can only be used inside v-for that is keyed. ",
+          el.rawAttrsMap['v-once']
+        );
+        return genElement(el, state)
+      }
+      return ("_o(" + (genElement(el, state)) + "," + (state.onceId++) + "," + key + ")")
+    } else {
+      return genStatic(el, state)
+    }
+  }
+
+  function genIf (
+    el,
+    state,
+    altGen,
+    altEmpty
+  ) {
+    el.ifProcessed = true; // avoid recursion
+    return genIfConditions(el.ifConditions.slice(), state, altGen, altEmpty)
+  }
+
+  function genIfConditions (
+    conditions,
+    state,
+    altGen,
+    altEmpty
+  ) {
+    if (!conditions.length) {
+      return altEmpty || '_e()'
+    }
+
+    var condition = conditions.shift();
+    if (condition.exp) {
+      return ("(" + (condition.exp) + ")?" + (genTernaryExp(condition.block)) + ":" + (genIfConditions(conditions, state, altGen, altEmpty)))
+    } else {
+      return ("" + (genTernaryExp(condition.block)))
+    }
+
+    // v-if with v-once should generate code like (a)?_m(0):_m(1)
+    function genTernaryExp (el) {
+      return altGen
+        ? altGen(el, state)
+        : el.once
+          ? genOnce(el, state)
+          : genElement(el, state)
+    }
+  }
+
+  function genFor (
+    el,
+    state,
+    altGen,
+    altHelper
+  ) {
+    var exp = el.for;
+    var alias = el.alias;
+    var iterator1 = el.iterator1 ? ("," + (el.iterator1)) : '';
+    var iterator2 = el.iterator2 ? ("," + (el.iterator2)) : '';
+
+    if (state.maybeComponent(el) &&
+      el.tag !== 'slot' &&
+      el.tag !== 'template' &&
+      !el.key
+    ) {
+      state.warn(
+        "<" + (el.tag) + " v-for=\"" + alias + " in " + exp + "\">: component lists rendered with " +
+        "v-for should have explicit keys. " +
+        "See https://vuejs.org/guide/list.html#key for more info.",
+        el.rawAttrsMap['v-for'],
+        true /* tip */
+      );
+    }
+
+    el.forProcessed = true; // avoid recursion
+    return (altHelper || '_l') + "((" + exp + ")," +
+      "function(" + alias + iterator1 + iterator2 + "){" +
+        "return " + ((altGen || genElement)(el, state)) +
+      '})'
+  }
+
+  function genData$2 (el, state) {
+    var data = '{';
+
+    // directives first.
+    // directives may mutate the el's other properties before they are generated.
+    var dirs = genDirectives(el, state);
+    if (dirs) { data += dirs + ','; }
+
+    // key
+    if (el.key) {
+      data += "key:" + (el.key) + ",";
+    }
+    // ref
+    if (el.ref) {
+      data += "ref:" + (el.ref) + ",";
+    }
+    if (el.refInFor) {
+      data += "refInFor:true,";
+    }
+    // pre
+    if (el.pre) {
+      data += "pre:true,";
+    }
+    // record original tag name for components using "is" attribute
+    if (el.component) {
+      data += "tag:\"" + (el.tag) + "\",";
+    }
+    // module data generation functions
+    for (var i = 0; i < state.dataGenFns.length; i++) {
+      data += state.dataGenFns[i](el);
+    }
+    // attributes
+    if (el.attrs) {
+      data += "attrs:" + (genProps(el.attrs)) + ",";
+    }
+    // DOM props
+    if (el.props) {
+      data += "domProps:" + (genProps(el.props)) + ",";
+    }
+    // event handlers
+    if (el.events) {
+      data += (genHandlers(el.events, false)) + ",";
+    }
+    if (el.nativeEvents) {
+      data += (genHandlers(el.nativeEvents, true)) + ",";
+    }
+    // slot target
+    // only for non-scoped slots
+    if (el.slotTarget && !el.slotScope) {
+      data += "slot:" + (el.slotTarget) + ",";
+    }
+    // scoped slots
+    if (el.scopedSlots) {
+      data += (genScopedSlots(el, el.scopedSlots, state)) + ",";
+    }
+    // component v-model
+    if (el.model) {
+      data += "model:{value:" + (el.model.value) + ",callback:" + (el.model.callback) + ",expression:" + (el.model.expression) + "},";
+    }
+    // inline-template
+    if (el.inlineTemplate) {
+      var inlineTemplate = genInlineTemplate(el, state);
+      if (inlineTemplate) {
+        data += inlineTemplate + ",";
+      }
+    }
+    data = data.replace(/,$/, '') + '}';
+    // v-bind dynamic argument wrap
+    // v-bind with dynamic arguments must be applied using the same v-bind object
+    // merge helper so that class/style/mustUseProp attrs are handled correctly.
+    if (el.dynamicAttrs) {
+      data = "_b(" + data + ",\"" + (el.tag) + "\"," + (genProps(el.dynamicAttrs)) + ")";
+    }
+    // v-bind data wrap
+    if (el.wrapData) {
+      data = el.wrapData(data);
+    }
+    // v-on data wrap
+    if (el.wrapListeners) {
+      data = el.wrapListeners(data);
+    }
+    return data
+  }
+
+  function genDirectives (el, state) {
+    var dirs = el.directives;
+    if (!dirs) { return }
+    var res = 'directives:[';
+    var hasRuntime = false;
+    var i, l, dir, needRuntime;
+    for (i = 0, l = dirs.length; i < l; i++) {
+      dir = dirs[i];
+      needRuntime = true;
+      var gen = state.directives[dir.name];
+      if (gen) {
+        // compile-time directive that manipulates AST.
+        // returns true if it also needs a runtime counterpart.
+        needRuntime = !!gen(el, dir, state.warn);
+      }
+      if (needRuntime) {
+        hasRuntime = true;
+        res += "{name:\"" + (dir.name) + "\",rawName:\"" + (dir.rawName) + "\"" + (dir.value ? (",value:(" + (dir.value) + "),expression:" + (JSON.stringify(dir.value))) : '') + (dir.arg ? (",arg:" + (dir.isDynamicArg ? dir.arg : ("\"" + (dir.arg) + "\""))) : '') + (dir.modifiers ? (",modifiers:" + (JSON.stringify(dir.modifiers))) : '') + "},";
+      }
+    }
+    if (hasRuntime) {
+      return res.slice(0, -1) + ']'
+    }
+  }
+
+  function genInlineTemplate (el, state) {
+    var ast = el.children[0];
+    if (el.children.length !== 1 || ast.type !== 1) {
+      state.warn(
+        'Inline-template components must have exactly one child element.',
+        { start: el.start }
+      );
+    }
+    if (ast && ast.type === 1) {
+      var inlineRenderFns = generate(ast, state.options);
+      return ("inlineTemplate:{render:function(){" + (inlineRenderFns.render) + "},staticRenderFns:[" + (inlineRenderFns.staticRenderFns.map(function (code) { return ("function(){" + code + "}"); }).join(',')) + "]}")
+    }
+  }
+
+  function genScopedSlots (
+    el,
+    slots,
+    state
+  ) {
+    // by default scoped slots are considered "stable", this allows child
+    // components with only scoped slots to skip forced updates from parent.
+    // but in some cases we have to bail-out of this optimization
+    // for example if the slot contains dynamic names, has v-if or v-for on them...
+    var needsForceUpdate = el.for || Object.keys(slots).some(function (key) {
+      var slot = slots[key];
+      return (
+        slot.slotTargetDynamic ||
+        slot.if ||
+        slot.for ||
+        containsSlotChild(slot) // is passing down slot from parent which may be dynamic
+      )
+    });
+
+    // #9534: if a component with scoped slots is inside a conditional branch,
+    // it's possible for the same component to be reused but with different
+    // compiled slot content. To avoid that, we generate a unique key based on
+    // the generated code of all the slot contents.
+    var needsKey = !!el.if;
+
+    // OR when it is inside another scoped slot or v-for (the reactivity may be
+    // disconnected due to the intermediate scope variable)
+    // #9438, #9506
+    // TODO: this can be further optimized by properly analyzing in-scope bindings
+    // and skip force updating ones that do not actually use scope variables.
+    if (!needsForceUpdate) {
+      var parent = el.parent;
+      while (parent) {
+        if (
+          (parent.slotScope && parent.slotScope !== emptySlotScopeToken) ||
+          parent.for
+        ) {
+          needsForceUpdate = true;
+          break
+        }
+        if (parent.if) {
+          needsKey = true;
+        }
+        parent = parent.parent;
+      }
+    }
+
+    var generatedSlots = Object.keys(slots)
+      .map(function (key) { return genScopedSlot(slots[key], state); })
+      .join(',');
+
+    return ("scopedSlots:_u([" + generatedSlots + "]" + (needsForceUpdate ? ",null,true" : "") + (!needsForceUpdate && needsKey ? (",null,false," + (hash(generatedSlots))) : "") + ")")
+  }
+
+  function hash(str) {
+    var hash = 5381;
+    var i = str.length;
+    while(i) {
+      hash = (hash * 33) ^ str.charCodeAt(--i);
+    }
+    return hash >>> 0
+  }
+
+  function containsSlotChild (el) {
+    if (el.type === 1) {
+      if (el.tag === 'slot') {
+        return true
+      }
+      return el.children.some(containsSlotChild)
+    }
+    return false
+  }
+
+  function genScopedSlot (
+    el,
+    state
+  ) {
+    var isLegacySyntax = el.attrsMap['slot-scope'];
+    if (el.if && !el.ifProcessed && !isLegacySyntax) {
+      return genIf(el, state, genScopedSlot, "null")
+    }
+    if (el.for && !el.forProcessed) {
+      return genFor(el, state, genScopedSlot)
+    }
+    var slotScope = el.slotScope === emptySlotScopeToken
+      ? ""
+      : String(el.slotScope);
+    var fn = "function(" + slotScope + "){" +
+      "return " + (el.tag === 'template'
+        ? el.if && isLegacySyntax
+          ? ("(" + (el.if) + ")?" + (genChildren(el, state) || 'undefined') + ":undefined")
+          : genChildren(el, state) || 'undefined'
+        : genElement(el, state)) + "}";
+    // reverse proxy v-slot without scope on this.$slots
+    var reverseProxy = slotScope ? "" : ",proxy:true";
+    return ("{key:" + (el.slotTarget || "\"default\"") + ",fn:" + fn + reverseProxy + "}")
+  }
+
+  function genChildren (
+    el,
+    state,
+    checkSkip,
+    altGenElement,
+    altGenNode
+  ) {
+    var children = el.children;
+    if (children.length) {
+      var el$1 = children[0];
+      // optimize single v-for
+      if (children.length === 1 &&
+        el$1.for &&
+        el$1.tag !== 'template' &&
+        el$1.tag !== 'slot'
+      ) {
+        var normalizationType = checkSkip
+          ? state.maybeComponent(el$1) ? ",1" : ",0"
+          : "";
+        return ("" + ((altGenElement || genElement)(el$1, state)) + normalizationType)
+      }
+      var normalizationType$1 = checkSkip
+        ? getNormalizationType(children, state.maybeComponent)
+        : 0;
+      var gen = altGenNode || genNode;
+      return ("[" + (children.map(function (c) { return gen(c, state); }).join(',')) + "]" + (normalizationType$1 ? ("," + normalizationType$1) : ''))
+    }
+  }
+
+  // determine the normalization needed for the children array.
+  // 0: no normalization needed
+  // 1: simple normalization needed (possible 1-level deep nested array)
+  // 2: full normalization needed
+  function getNormalizationType (
+    children,
+    maybeComponent
+  ) {
+    var res = 0;
+    for (var i = 0; i < children.length; i++) {
+      var el = children[i];
+      if (el.type !== 1) {
+        continue
+      }
+      if (needsNormalization(el) ||
+          (el.ifConditions && el.ifConditions.some(function (c) { return needsNormalization(c.block); }))) {
+        res = 2;
+        break
+      }
+      if (maybeComponent(el) ||
+          (el.ifConditions && el.ifConditions.some(function (c) { return maybeComponent(c.block); }))) {
+        res = 1;
+      }
+    }
+    return res
+  }
+
+  function needsNormalization (el) {
+    return el.for !== undefined || el.tag === 'template' || el.tag === 'slot'
+  }
+
+  function genNode (node, state) {
+    if (node.type === 1) {
+      return genElement(node, state)
+    } else if (node.type === 3 && node.isComment) {
+      return genComment(node)
+    } else {
+      return genText(node)
+    }
+  }
+
+  function genText (text) {
+    return ("_v(" + (text.type === 2
+      ? text.expression // no need for () because already wrapped in _s()
+      : transformSpecialNewlines(JSON.stringify(text.text))) + ")")
+  }
+
+  function genComment (comment) {
+    return ("_e(" + (JSON.stringify(comment.text)) + ")")
+  }
+
+  function genSlot (el, state) {
+    var slotName = el.slotName || '"default"';
+    var children = genChildren(el, state);
+    var res = "_t(" + slotName + (children ? ("," + children) : '');
+    var attrs = el.attrs || el.dynamicAttrs
+      ? genProps((el.attrs || []).concat(el.dynamicAttrs || []).map(function (attr) { return ({
+          // slot props are camelized
+          name: camelize(attr.name),
+          value: attr.value,
+          dynamic: attr.dynamic
+        }); }))
+      : null;
+    var bind$$1 = el.attrsMap['v-bind'];
+    if ((attrs || bind$$1) && !children) {
+      res += ",null";
+    }
+    if (attrs) {
+      res += "," + attrs;
+    }
+    if (bind$$1) {
+      res += (attrs ? '' : ',null') + "," + bind$$1;
+    }
+    return res + ')'
+  }
+
+  // componentName is el.component, take it as argument to shun flow's pessimistic refinement
+  function genComponent (
+    componentName,
+    el,
+    state
+  ) {
+    var children = el.inlineTemplate ? null : genChildren(el, state, true);
+    return ("_c(" + componentName + "," + (genData$2(el, state)) + (children ? ("," + children) : '') + ")")
+  }
+
+  function genProps (props) {
+    var staticProps = "";
+    var dynamicProps = "";
+    for (var i = 0; i < props.length; i++) {
+      var prop = props[i];
+      var value = transformSpecialNewlines(prop.value);
+      if (prop.dynamic) {
+        dynamicProps += (prop.name) + "," + value + ",";
+      } else {
+        staticProps += "\"" + (prop.name) + "\":" + value + ",";
+      }
+    }
+    staticProps = "{" + (staticProps.slice(0, -1)) + "}";
+    if (dynamicProps) {
+      return ("_d(" + staticProps + ",[" + (dynamicProps.slice(0, -1)) + "])")
+    } else {
+      return staticProps
+    }
+  }
+
+  // #3895, #4268
+  function transformSpecialNewlines (text) {
+    return text
+      .replace(/\u2028/g, '\\u2028')
+      .replace(/\u2029/g, '\\u2029')
+  }
+
+  /*  */
+
+
+
+  // these keywords should not appear inside expressions, but operators like
+  // typeof, instanceof and in are allowed
+  var prohibitedKeywordRE = new RegExp('\\b' + (
+    'do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const,' +
+    'super,throw,while,yield,delete,export,import,return,switch,default,' +
+    'extends,finally,continue,debugger,function,arguments'
+  ).split(',').join('\\b|\\b') + '\\b');
+
+  // these unary operators should not be used as property/method names
+  var unaryOperatorsRE = new RegExp('\\b' + (
+    'delete,typeof,void'
+  ).split(',').join('\\s*\\([^\\)]*\\)|\\b') + '\\s*\\([^\\)]*\\)');
+
+  // strip strings in expressions
+  var stripStringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g;
+
+  // detect problematic expressions in a template
+  function detectErrors (ast, warn) {
+    if (ast) {
+      checkNode(ast, warn);
+    }
+  }
+
+  function checkNode (node, warn) {
+    if (node.type === 1) {
+      for (var name in node.attrsMap) {
+        if (dirRE.test(name)) {
+          var value = node.attrsMap[name];
+          if (value) {
+            var range = node.rawAttrsMap[name];
+            if (name === 'v-for') {
+              checkFor(node, ("v-for=\"" + value + "\""), warn, range);
+            } else if (name === 'v-slot' || name[0] === '#') {
+              checkFunctionParameterExpression(value, (name + "=\"" + value + "\""), warn, range);
+            } else if (onRE.test(name)) {
+              checkEvent(value, (name + "=\"" + value + "\""), warn, range);
+            } else {
+              checkExpression(value, (name + "=\"" + value + "\""), warn, range);
+            }
+          }
+        }
+      }
+      if (node.children) {
+        for (var i = 0; i < node.children.length; i++) {
+          checkNode(node.children[i], warn);
+        }
+      }
+    } else if (node.type === 2) {
+      checkExpression(node.expression, node.text, warn, node);
+    }
+  }
+
+  function checkEvent (exp, text, warn, range) {
+    var stripped = exp.replace(stripStringRE, '');
+    var keywordMatch = stripped.match(unaryOperatorsRE);
+    if (keywordMatch && stripped.charAt(keywordMatch.index - 1) !== '$') {
+      warn(
+        "avoid using JavaScript unary operator as property name: " +
+        "\"" + (keywordMatch[0]) + "\" in expression " + (text.trim()),
+        range
+      );
+    }
+    checkExpression(exp, text, warn, range);
+  }
+
+  function checkFor (node, text, warn, range) {
+    checkExpression(node.for || '', text, warn, range);
+    checkIdentifier(node.alias, 'v-for alias', text, warn, range);
+    checkIdentifier(node.iterator1, 'v-for iterator', text, warn, range);
+    checkIdentifier(node.iterator2, 'v-for iterator', text, warn, range);
+  }
+
+  function checkIdentifier (
+    ident,
+    type,
+    text,
+    warn,
+    range
+  ) {
+    if (typeof ident === 'string') {
+      try {
+        new Function(("var " + ident + "=_"));
+      } catch (e) {
+        warn(("invalid " + type + " \"" + ident + "\" in expression: " + (text.trim())), range);
+      }
+    }
+  }
+
+  function checkExpression (exp, text, warn, range) {
+    try {
+      new Function(("return " + exp));
+    } catch (e) {
+      var keywordMatch = exp.replace(stripStringRE, '').match(prohibitedKeywordRE);
+      if (keywordMatch) {
+        warn(
+          "avoid using JavaScript keyword as property name: " +
+          "\"" + (keywordMatch[0]) + "\"\n  Raw expression: " + (text.trim()),
+          range
+        );
+      } else {
+        warn(
+          "invalid expression: " + (e.message) + " in\n\n" +
+          "    " + exp + "\n\n" +
+          "  Raw expression: " + (text.trim()) + "\n",
+          range
+        );
+      }
+    }
+  }
+
+  function checkFunctionParameterExpression (exp, text, warn, range) {
+    try {
+      new Function(exp, '');
+    } catch (e) {
+      warn(
+        "invalid function parameter expression: " + (e.message) + " in\n\n" +
+        "    " + exp + "\n\n" +
+        "  Raw expression: " + (text.trim()) + "\n",
+        range
+      );
+    }
+  }
+
+  /*  */
+
+  var range = 2;
+
+  function generateCodeFrame (
+    source,
+    start,
+    end
+  ) {
+    if ( start === void 0 ) start = 0;
+    if ( end === void 0 ) end = source.length;
+
+    var lines = source.split(/\r?\n/);
+    var count = 0;
+    var res = [];
+    for (var i = 0; i < lines.length; i++) {
+      count += lines[i].length + 1;
+      if (count >= start) {
+        for (var j = i - range; j <= i + range || end > count; j++) {
+          if (j < 0 || j >= lines.length) { continue }
+          res.push(("" + (j + 1) + (repeat$1(" ", 3 - String(j + 1).length)) + "|  " + (lines[j])));
+          var lineLength = lines[j].length;
+          if (j === i) {
+            // push underline
+            var pad = start - (count - lineLength) + 1;
+            var length = end > count ? lineLength - pad : end - start;
+            res.push("   |  " + repeat$1(" ", pad) + repeat$1("^", length));
+          } else if (j > i) {
+            if (end > count) {
+              var length$1 = Math.min(end - count, lineLength);
+              res.push("   |  " + repeat$1("^", length$1));
+            }
+            count += lineLength + 1;
+          }
+        }
+        break
+      }
+    }
+    return res.join('\n')
+  }
+
+  function repeat$1 (str, n) {
+    var result = '';
+    if (n > 0) {
+      while (true) { // eslint-disable-line
+        if (n & 1) { result += str; }
+        n >>>= 1;
+        if (n <= 0) { break }
+        str += str;
+      }
+    }
+    return result
+  }
+
+  /*  */
+
+
+
+  function createFunction (code, errors) {
+    try {
+      return new Function(code)
+    } catch (err) {
+      errors.push({ err: err, code: code });
+      return noop
+    }
+  }
+
+  function createCompileToFunctionFn (compile) {
+    var cache = Object.create(null);
+
+    return function compileToFunctions (
+      template,
+      options,
+      vm
+    ) {
+      options = extend({}, options);
+      var warn$$1 = options.warn || warn;
+      delete options.warn;
+
+      /* istanbul ignore if */
+      {
+        // detect possible CSP restriction
+        try {
+          new Function('return 1');
+        } catch (e) {
+          if (e.toString().match(/unsafe-eval|CSP/)) {
+            warn$$1(
+              'It seems you are using the standalone build of Vue.js in an ' +
+              'environment with Content Security Policy that prohibits unsafe-eval. ' +
+              'The template compiler cannot work in this environment. Consider ' +
+              'relaxing the policy to allow unsafe-eval or pre-compiling your ' +
+              'templates into render functions.'
+            );
+          }
+        }
+      }
+
+      // check cache
+      var key = options.delimiters
+        ? String(options.delimiters) + template
+        : template;
+      if (cache[key]) {
+        return cache[key]
+      }
+
+      // compile
+      var compiled = compile(template, options);
+
+      // check compilation errors/tips
+      {
+        if (compiled.errors && compiled.errors.length) {
+          if (options.outputSourceRange) {
+            compiled.errors.forEach(function (e) {
+              warn$$1(
+                "Error compiling template:\n\n" + (e.msg) + "\n\n" +
+                generateCodeFrame(template, e.start, e.end),
+                vm
+              );
+            });
+          } else {
+            warn$$1(
+              "Error compiling template:\n\n" + template + "\n\n" +
+              compiled.errors.map(function (e) { return ("- " + e); }).join('\n') + '\n',
+              vm
+            );
+          }
+        }
+        if (compiled.tips && compiled.tips.length) {
+          if (options.outputSourceRange) {
+            compiled.tips.forEach(function (e) { return tip(e.msg, vm); });
+          } else {
+            compiled.tips.forEach(function (msg) { return tip(msg, vm); });
+          }
+        }
+      }
+
+      // turn code into functions
+      var res = {};
+      var fnGenErrors = [];
+      res.render = createFunction(compiled.render, fnGenErrors);
+      res.staticRenderFns = compiled.staticRenderFns.map(function (code) {
+        return createFunction(code, fnGenErrors)
+      });
+
+      // check function generation errors.
+      // this should only happen if there is a bug in the compiler itself.
+      // mostly for codegen development use
+      /* istanbul ignore if */
+      {
+        if ((!compiled.errors || !compiled.errors.length) && fnGenErrors.length) {
+          warn$$1(
+            "Failed to generate render function:\n\n" +
+            fnGenErrors.map(function (ref) {
+              var err = ref.err;
+              var code = ref.code;
+
+              return ((err.toString()) + " in\n\n" + code + "\n");
+          }).join('\n'),
+            vm
+          );
+        }
+      }
+
+      return (cache[key] = res)
+    }
+  }
+
+  /*  */
+
+  function createCompilerCreator (baseCompile) {
+    return function createCompiler (baseOptions) {
+      function compile (
+        template,
+        options
+      ) {
+        var finalOptions = Object.create(baseOptions);
+        var errors = [];
+        var tips = [];
+
+        var warn = function (msg, range, tip) {
+          (tip ? tips : errors).push(msg);
+        };
+
+        if (options) {
+          if (options.outputSourceRange) {
+            // $flow-disable-line
+            var leadingSpaceLength = template.match(/^\s*/)[0].length;
+
+            warn = function (msg, range, tip) {
+              var data = { msg: msg };
+              if (range) {
+                if (range.start != null) {
+                  data.start = range.start + leadingSpaceLength;
+                }
+                if (range.end != null) {
+                  data.end = range.end + leadingSpaceLength;
+                }
+              }
+              (tip ? tips : errors).push(data);
+            };
+          }
+          // merge custom modules
+          if (options.modules) {
+            finalOptions.modules =
+              (baseOptions.modules || []).concat(options.modules);
+          }
+          // merge custom directives
+          if (options.directives) {
+            finalOptions.directives = extend(
+              Object.create(baseOptions.directives || null),
+              options.directives
+            );
+          }
+          // copy other options
+          for (var key in options) {
+            if (key !== 'modules' && key !== 'directives') {
+              finalOptions[key] = options[key];
+            }
+          }
+        }
+
+        finalOptions.warn = warn;
+
+        var compiled = baseCompile(template.trim(), finalOptions);
+        {
+          detectErrors(compiled.ast, warn);
+        }
+        compiled.errors = errors;
+        compiled.tips = tips;
+        return compiled
+      }
+
+      return {
+        compile: compile,
+        compileToFunctions: createCompileToFunctionFn(compile)
+      }
+    }
+  }
+
+  /*  */
+
+  // `createCompilerCreator` allows creating compilers that use alternative
+  // parser/optimizer/codegen, e.g the SSR optimizing compiler.
+  // Here we just export a default compiler using the default parts.
+  var createCompiler = createCompilerCreator(function baseCompile (
+    template,
+    options
+  ) {
+    var ast = parse(template.trim(), options);
+    if (options.optimize !== false) {
+      optimize(ast, options);
+    }
+    var code = generate(ast, options);
+    return {
+      ast: ast,
+      render: code.render,
+      staticRenderFns: code.staticRenderFns
+    }
+  });
+
+  /*  */
+
+  var ref$1 = createCompiler(baseOptions);
+  var compile = ref$1.compile;
+  var compileToFunctions = ref$1.compileToFunctions;
+
+  /*  */
+
+  // check whether current browser encodes a char inside attribute values
+  var div;
+  function getShouldDecode (href) {
+    div = div || document.createElement('div');
+    div.innerHTML = href ? "<a href=\"\n\"/>" : "<div a=\"\n\"/>";
+    return div.innerHTML.indexOf('&#10;') > 0
+  }
+
+  // #3663: IE encodes newlines inside attribute values while other browsers don't
+  var shouldDecodeNewlines = inBrowser ? getShouldDecode(false) : false;
+  // #6828: chrome encodes content in a[href]
+  var shouldDecodeNewlinesForHref = inBrowser ? getShouldDecode(true) : false;
+
+  /*  */
+
+  var idToTemplate = cached(function (id) {
+    var el = query(id);
+    return el && el.innerHTML
+  });
+
+  var mount = Vue.prototype.$mount;
+  Vue.prototype.$mount = function (
+    el,
+    hydrating
+  ) {
+    el = el && query(el);
+
+    /* istanbul ignore if */
+    if (el === document.body || el === document.documentElement) {
+      warn(
+        "Do not mount Vue to <html> or <body> - mount to normal elements instead."
+      );
+      return this
+    }
+
+    var options = this.$options;
+    // resolve template/el and convert to render function
+    if (!options.render) {
+      var template = options.template;
+      if (template) {
+        if (typeof template === 'string') {
+          if (template.charAt(0) === '#') {
+            template = idToTemplate(template);
+            /* istanbul ignore if */
+            if (!template) {
+              warn(
+                ("Template element not found or is empty: " + (options.template)),
+                this
+              );
+            }
+          }
+        } else if (template.nodeType) {
+          template = template.innerHTML;
+        } else {
+          {
+            warn('invalid template option:' + template, this);
+          }
+          return this
+        }
+      } else if (el) {
+        template = getOuterHTML(el);
+      }
+      if (template) {
+        /* istanbul ignore if */
+        if (config.performance && mark) {
+          mark('compile');
+        }
+
+        var ref = compileToFunctions(template, {
+          outputSourceRange: "development" !== 'production',
+          shouldDecodeNewlines: shouldDecodeNewlines,
+          shouldDecodeNewlinesForHref: shouldDecodeNewlinesForHref,
+          delimiters: options.delimiters,
+          comments: options.comments
+        }, this);
+        var render = ref.render;
+        var staticRenderFns = ref.staticRenderFns;
+        options.render = render;
+        options.staticRenderFns = staticRenderFns;
+
+        /* istanbul ignore if */
+        if (config.performance && mark) {
+          mark('compile end');
+          measure(("vue " + (this._name) + " compile"), 'compile', 'compile end');
+        }
+      }
+    }
+    return mount.call(this, el, hydrating)
+  };
+
+  /**
+   * Get outerHTML of elements, taking care
+   * of SVG elements in IE as well.
+   */
+  function getOuterHTML (el) {
+    if (el.outerHTML) {
+      return el.outerHTML
+    } else {
+      var container = document.createElement('div');
+      container.appendChild(el.cloneNode(true));
+      return container.innerHTML
+    }
+  }
+
+  Vue.compile = compileToFunctions;
+
+  return Vue;
+
+}));
diff --git a/ln.build/ln.build.csproj b/ln.build/ln.build.csproj
index 4ddffb2..d87b692 100644
--- a/ln.build/ln.build.csproj
+++ b/ln.build/ln.build.csproj
@@ -13,12 +13,19 @@
     <PackageTags>build build-server</PackageTags>
   </PropertyGroup>
   
+  <ItemGroup>
+    <None Update="html/**" CopyToOutputDirectory="PreserveNewest" />
+  </ItemGroup>
+
+
   <ItemGroup>
     <PackageReference Include="LibGit2Sharp" Version="0.26.2" />
     <PackageReference Include="ln.logging" Version="1.0.1" />
     <PackageReference Include="ln.threading" Version="0.1.0" />
     <PackageReference Include="ln.json" Version="1.0.0" />
     <PackageReference Include="ln.http" Version="0.1.2" />
+    <PackageReference Include="ln.templates" Version="0.1.1" />
+    <PackageReference Include="ln.templates.http" Version="0.0.1-test" />
   </ItemGroup>
 
 </Project>
diff --git a/ln.build/repositories/GiteaRepositoryInterface.cs b/ln.build/repositories/GiteaRepositoryInterface.cs
index 85eaf7e..f8fbd33 100644
--- a/ln.build/repositories/GiteaRepositoryInterface.cs
+++ b/ln.build/repositories/GiteaRepositoryInterface.cs
@@ -12,6 +12,8 @@ namespace ln.build.repositories
     {
         public string BaseURL { get; }
 
+        public string AuthorizationToken { get; set; }
+
         public GiteaRepositoryInterface(string baseURL) :base("gitea")
         {
             BaseURL = baseURL;
@@ -30,15 +32,18 @@ namespace ln.build.repositories
             if (buildStateURL != null)
             {
                 JSONObject stateObject = new JSONObject();
-                stateObject.Add("context", "ln.build");
+                stateObject.Add("context", string.Format("ln.build - {0}", job.CIService.HostName));
                 stateObject.Add("description", "build job pending");
                 stateObject.Add("state", job.BuildState.ToString().ToLower());
-                stateObject.Add("target_url", JSONNull.Instance);
+                stateObject.Add("target_url", job.CIService.GetJobURL(job));
 
                 using (HttpClient httpClient = new HttpClient())
                 {
+                    httpClient.DefaultRequestHeaders.Add("Authorization",String.Format("token {0}", AuthorizationToken));
+
                     HttpResponseMessage response = httpClient.PostAsync(buildStateURL, new StringContent(stateObject.ToString(),Encoding.UTF8,"application/json")).Result;
                     job.Logger.Log(LogLevel.DEBUG, "UpdateBuildState({0}): {1}", job.BuildState, buildStateURL);
+                    job.Logger.Log(LogLevel.DEBUG, "Request: {0}", stateObject.ToString());
                     job.Logger.Log(LogLevel.DEBUG, "Response: {0}", response );
                 }
             }        
@@ -68,7 +73,7 @@ namespace ln.build.repositories
                             string commitID = commit["id"].ToNative().ToString();
                             Logging.Log("Received CI request of repository {0} for commit {1}", cloneUrl, commitID);
 
-                            CIJob job = new CIJob(cloneUrl)
+                            CIJob job = new CIJob(ciService, this, cloneUrl)
                                 .SetVariable("REPO_OWNER", message["repository"]["owner"]["username"].ToNative().ToString())
                                 .SetVariable("REPO_NAME", message["repository"]["name"].ToNative().ToString())
                                 .SetVariable("COMMIT_ID", commitID)