diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f73e981..f329c09 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -24,7 +24,7 @@ test-my-project:
   stage: test
   script:
     - go get github.com/client9/misspell/cmd/misspell
-    - misspell -error .
+    - find . -type f | grep -v webroot/assets | xargs misspell -error
     - ./.ci/check-gofmt
     - ./.ci/check-testfiles
     - go test $(go list ./... | grep -v /vendor/) -v -coverprofile .testCoverage.txt
@@ -44,7 +44,10 @@ deploy:
   script:
     - go install "dev.sum7.eu/$CI_PROJECT_PATH"
     - 'which ssh-agent || ( apt-get update -y && apt-get install openssh-client -y )'
+    - 'which rsync || ( apt-get update -y && apt-get install rsync -y )'
     - eval $(ssh-agent -s)
     - echo "$SSH_PRIVATE_KEY" | tr -d '\r' | ssh-add - > /dev/null
+    - rsync -e "ssh -6 -o StrictHostKeyChecking=no -p $SSH_PORT" -a --delete "/builds/$CI_PROJECT_PATH/webroot/" "$CI_PROJECT_NAME@$SSH_HOST":/opt/$CI_PROJECT_NAME/webroot/
+    - ssh -6 -o StrictHostKeyChecking=no -p $SSH_PORT "$CI_PROJECT_NAME@$SSH_HOST" sudo /usr/bin/systemctl stop $CI_PROJECT_NAME
     - scp -6 -o StrictHostKeyChecking=no -P $SSH_PORT "/go/bin/$CI_PROJECT_NAME" "$CI_PROJECT_NAME@$SSH_HOST":/opt/$CI_PROJECT_NAME/bin
-    - ssh -6 -o StrictHostKeyChecking=no -p $SSH_PORT "$CI_PROJECT_NAME@$SSH_HOST" sudo /usr/bin/systemctl restart $CI_PROJECT_NAME
+    - ssh -6 -o StrictHostKeyChecking=no -p $SSH_PORT "$CI_PROJECT_NAME@$SSH_HOST" sudo /usr/bin/systemctl start $CI_PROJECT_NAME
diff --git a/cmd/controller.go b/cmd/controller.go
index 0754ba2..acfbbb6 100644
--- a/cmd/controller.go
+++ b/cmd/controller.go
@@ -1,6 +1,7 @@
 package cmd
 
 import (
+	"net"
 	"os"
 	"os/signal"
 	"syscall"
@@ -12,7 +13,9 @@ import (
 	"dev.sum7.eu/genofire/wifictld-analyzer/capture"
 	"dev.sum7.eu/genofire/wifictld-analyzer/config"
 	"dev.sum7.eu/genofire/wifictld-analyzer/controller"
+	"dev.sum7.eu/genofire/wifictld-analyzer/data"
 	"dev.sum7.eu/genofire/wifictld-analyzer/database"
+	"dev.sum7.eu/genofire/wifictld-analyzer/web"
 )
 
 // queryCmd represents the query command
@@ -31,7 +34,26 @@ var controllerCmd = &cobra.Command{
 		ctr := controller.NewController(db)
 		defer ctr.Close()
 
-		coll := capture.NewCollector(ctr.Handler, configObj.Interfaces)
+		var handlers []data.Handler
+
+		if configObj.Webserver.Enable {
+			log.Infof("starting webserver on %s", configObj.Webserver.Bind)
+			srv := web.New(configObj.Webserver)
+			go srv.Start()
+			handlers = append(handlers, srv.Handler)
+			defer srv.Close()
+		}
+
+		coll := capture.NewCollector(func(addr *net.UDPAddr, msg *data.SocketMSG) (*data.SocketMSG, error) {
+			for _, a := range handlers {
+				a(addr, msg)
+			}
+			if !configObj.Answer {
+				ctr.Handler(addr, msg)
+				return nil, nil
+			}
+			return ctr.Handler(addr, msg)
+		}, configObj.Interfaces)
 		defer coll.Close()
 
 		ctr.Send = coll.Send
@@ -47,5 +69,5 @@ var controllerCmd = &cobra.Command{
 }
 
 func init() {
-	RootCmd.AddCommand(controllerCmd)
+	RootCMD.AddCommand(controllerCmd)
 }
diff --git a/cmd/dump.go b/cmd/dump.go
index 2166b7f..5b4ce49 100644
--- a/cmd/dump.go
+++ b/cmd/dump.go
@@ -58,7 +58,7 @@ var dumpCmd = &cobra.Command{
 }
 
 func init() {
-	RootCmd.AddCommand(dumpCmd)
+	RootCMD.AddCommand(dumpCmd)
 	dumpCmd.Flags().IntVar(&port, "port", capture.Port, "define a port to listen (if not set or set to 0 the kernel will use a random free port at its own)")
 	dumpCmd.Flags().StringVar(&ipAddress, "listen", capture.MulticastAddressDefault, "")
 }
diff --git a/cmd/root.go b/cmd/root.go
index 6c035e8..a3f3fb7 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -6,19 +6,22 @@ import (
 	"github.com/spf13/cobra"
 )
 
-var debug bool
+var (
+	debug      bool
+	timestamps bool
+)
 
-// RootCmd represents the base command when called without any subcommands
-var RootCmd = &cobra.Command{
+// RootCMD represents the base command when called without any subcommands
+var RootCMD = &cobra.Command{
 	Use:   "analyzer",
 	Short: "wifictld analyzer",
 	Long:  `capture wifictld traffic and display thus`,
 }
 
 // Execute adds all child commands to the root command and sets flags appropriately.
-// This is called by main.main(). It only needs to happen once to the rootCmd.
+// This is called by main.main(). It only needs to happen once to the RootCMD.
 func Execute() {
-	if err := RootCmd.Execute(); err != nil {
+	if err := RootCMD.Execute(); err != nil {
 		log.Error(err)
 	}
 }
@@ -27,7 +30,11 @@ func init() {
 		if debug {
 			log.SetLevel(log.DebugLevel)
 		}
+		log.SetFormatter(&log.TextFormatter{
+			DisableTimestamp: timestamps,
+		})
 		log.Debug("show debug")
 	})
-	RootCmd.PersistentFlags().BoolVar(&debug, "v", false, "show debug log")
+	RootCMD.PersistentFlags().BoolVar(&debug, "v", false, "show debug log")
+	RootCMD.PersistentFlags().BoolVar(&timestamps, "timestamps", false, "Enables timestamps for log output")
 }
diff --git a/config/config.go b/config/config.go
index d83ee12..3ab7d78 100644
--- a/config/config.go
+++ b/config/config.go
@@ -2,9 +2,12 @@ package config
 
 import (
 	"dev.sum7.eu/genofire/wifictld-analyzer/capture"
+	"dev.sum7.eu/genofire/wifictld-analyzer/web"
 )
 
 type Config struct {
 	StatePath  string                 `toml:"state_path"`
+	Answer     bool                   `toml:"answer"`
+	Webserver  *web.Config            `toml:"webserver"`
 	Interfaces []*capture.IFaceConfig `toml:"interfaces"`
 }
diff --git a/config_example.conf b/config_example.conf
index 999bf8c..1132b6d 100644
--- a/config_example.conf
+++ b/config_example.conf
@@ -1,6 +1,13 @@
 state_path = "/tmp/wifictld.json"
+answer = false
+
+
+[webserver]
+enable  = true
+bind    = ":8080"
+webroot = "./webroot/"
 
 [[interfaces]]
-ifname = "wlp4s0"
-#port = 1000
-#ip_address = "ff02::31f1"
+ifname       = "wlp4s0"
+#port        = 1000
+#ip_address  = "ff02::31f1"
diff --git a/data/hwaddr.go b/data/hwaddr.go
new file mode 100644
index 0000000..11ffa78
--- /dev/null
+++ b/data/hwaddr.go
@@ -0,0 +1,16 @@
+package data
+
+import "net"
+
+type HardwareAddr struct{ net.HardwareAddr }
+
+//MarshalJSON to bytearray
+func (a HardwareAddr) MarshalText() ([]byte, error) {
+	return []byte(a.String()), nil
+}
+
+// UnmarshalJSON from bytearray
+func (a HardwareAddr) UnmarshalText(data []byte) (err error) {
+	a.HardwareAddr, err = net.ParseMAC(string(data))
+	return
+}
diff --git a/data/socket_msg.go b/data/socket_msg.go
index 2f94c39..ad43e30 100644
--- a/data/socket_msg.go
+++ b/data/socket_msg.go
@@ -3,7 +3,6 @@ package data
 import (
 	"encoding/binary"
 	"fmt"
-	"net"
 	"time"
 
 	"github.com/bdlm/log"
@@ -31,8 +30,8 @@ func (a SocketMSGType) Is(b SocketMSGType) bool {
 
 // SocketMSG package of wifictld format
 type SocketMSG struct {
-	Types  SocketMSGType
-	Client *WifiClient
+	Types  SocketMSGType `json:"types"`
+	Client *WifiClient   `json:"client,omitempty"`
 }
 
 func NewSocketMSG(obj []byte) (*SocketMSG, error) {
@@ -51,17 +50,17 @@ func (msg *SocketMSG) Marshal() ([]byte, error) {
 	pos += 4
 
 	if msg.Types.Is(SocketMSGTypeClient) {
-		obj[pos] = msg.Client.Addr[0]
+		obj[pos] = msg.Client.Addr.HardwareAddr[0]
 		pos++
-		obj[pos] = msg.Client.Addr[1]
+		obj[pos] = msg.Client.Addr.HardwareAddr[1]
 		pos++
-		obj[pos] = msg.Client.Addr[2]
+		obj[pos] = msg.Client.Addr.HardwareAddr[2]
 		pos++
-		obj[pos] = msg.Client.Addr[3]
+		obj[pos] = msg.Client.Addr.HardwareAddr[3]
 		pos++
-		obj[pos] = msg.Client.Addr[4]
+		obj[pos] = msg.Client.Addr.HardwareAddr[4]
 		pos++
-		obj[pos] = msg.Client.Addr[5]
+		obj[pos] = msg.Client.Addr.HardwareAddr[5]
 		pos++
 		binary.BigEndian.PutUint32(obj[pos:(pos+4)], uint32(msg.Client.Time.Unix()))
 		pos += 4
@@ -100,7 +99,7 @@ func (msg *SocketMSG) Unmarshal(obj []byte) error {
 
 	if msg.Types.Is(SocketMSGTypeClient) {
 		msg.Client = &WifiClient{
-			Addr:           net.HardwareAddr(obj[pos:(pos + 6)]),
+			Addr:           HardwareAddr{HardwareAddr: obj[pos:(pos + 6)]},
 			Time:           time.Unix(int64(binary.BigEndian.Uint32(obj[(pos+6):(pos+10)])), 0),
 			TryProbe:       binary.BigEndian.Uint16(obj[(pos + 10):(pos + 12)]),
 			TryAuth:        binary.BigEndian.Uint16(obj[(pos + 12):(pos + 14)]),
diff --git a/data/wifi_client.go b/data/wifi_client.go
index d335cdc..cc90d2c 100644
--- a/data/wifi_client.go
+++ b/data/wifi_client.go
@@ -1,9 +1,6 @@
 package data
 
-import (
-	"net"
-	"time"
-)
+import "time"
 
 const (
 	// default multicast group used by announced
@@ -18,13 +15,13 @@ const (
 
 // WifiClient datatype of wifictld
 type WifiClient struct {
-	Addr           net.HardwareAddr
-	Time           time.Time
-	TryProbe       uint16
-	TryAuth        uint16
-	Connected      bool
-	Authed         bool
-	FreqHighest    uint16
-	SignalLowFreq  int16
-	SignalHighFreq int16
+	Addr           HardwareAddr `json:"addr"`
+	Time           time.Time    `json:"time"`
+	TryProbe       uint16       `json:"try_probe"`
+	TryAuth        uint16       `json:"try_auth"`
+	Connected      bool         `json:"connected"`
+	Authed         bool         `json:"authed"`
+	FreqHighest    uint16       `json:"freq_highest"`
+	SignalLowFreq  int16        `json:"signal_low_freq"`
+	SignalHighFreq int16        `json:"signal_high_freq"`
 }
diff --git a/database/client.go b/database/client.go
index a2ca78e..1680ce3 100644
--- a/database/client.go
+++ b/database/client.go
@@ -11,17 +11,17 @@ import (
 )
 
 type Client struct {
-	AP             *AP              `json:"-"`
-	APAddr         string           `json:"ap"`
-	Addr           net.HardwareAddr `json:"-"`
-	TryProbe       uint16           `json:"try_probe"`
-	TryAuth        uint16           `json:"try_auth"`
-	Connected      bool             `json:"connected"`
-	Authed         bool             `json:"authed"`
-	FreqHighest    uint16           `json:"freq_highest"`
-	SignalLowFreq  int16            `json:"signal_low_freq"`
-	SignalHighFreq int16            `json:"signal_high_freq"`
-	Lastseen       jsontime.Time    `json:"lastseen"`
+	AP             *AP               `json:"-"`
+	APAddr         string            `json:"ap"`
+	Addr           data.HardwareAddr `json:"-"`
+	TryProbe       uint16            `json:"try_probe"`
+	TryAuth        uint16            `json:"try_auth"`
+	Connected      bool              `json:"connected"`
+	Authed         bool              `json:"authed"`
+	FreqHighest    uint16            `json:"freq_highest"`
+	SignalLowFreq  int16             `json:"signal_low_freq"`
+	SignalHighFreq int16             `json:"signal_high_freq"`
+	Lastseen       jsontime.Time     `json:"lastseen"`
 }
 
 func (db *DB) LearnClient(apIP net.IP, clientWifictl *data.WifiClient) bool {
@@ -70,7 +70,7 @@ func (db *DB) LearnClient(apIP net.IP, clientWifictl *data.WifiClient) bool {
 	return ret
 }
 
-func (db *DB) GetClient(addr net.HardwareAddr) *data.WifiClient {
+func (db *DB) GetClient(addr data.HardwareAddr) *data.WifiClient {
 	client, ok := db.Clients[addr.String()]
 	wClient := &data.WifiClient{
 		Addr: addr,
diff --git a/database/main.go b/database/main.go
index acfd91f..cf2ab84 100644
--- a/database/main.go
+++ b/database/main.go
@@ -1,7 +1,6 @@
 package database
 
 import (
-	"net"
 	"time"
 
 	"github.com/bdlm/log"
@@ -25,7 +24,7 @@ func NewDB(path string) *DB {
 	file.ReadJSON(path, db)
 
 	for addr, client := range db.Clients {
-		client.Addr, _ = net.ParseMAC(addr)
+		client.Addr.UnmarshalText([]byte(addr))
 		if ap, ok := db.APs[client.APAddr]; ok {
 			client.AP = ap
 		}
diff --git a/web/config.go b/web/config.go
new file mode 100644
index 0000000..fb7763b
--- /dev/null
+++ b/web/config.go
@@ -0,0 +1,7 @@
+package web
+
+type Config struct {
+	Enable  bool   `toml:"enable"`
+	Bind    string `toml:"bind"`
+	Webroot string `toml:"webroot"`
+}
diff --git a/web/webserver.go b/web/webserver.go
new file mode 100644
index 0000000..7c03738
--- /dev/null
+++ b/web/webserver.go
@@ -0,0 +1,54 @@
+package web
+
+import (
+	"net"
+	"net/http"
+
+	"github.com/NYTimes/gziphandler"
+	"github.com/bdlm/log"
+
+	"dev.sum7.eu/genofire/golang-lib/websocket"
+
+	"dev.sum7.eu/genofire/wifictld-analyzer/data"
+)
+
+type Server struct {
+	web *http.Server
+	ws  *websocket.WebsocketHandlerService
+}
+
+// New creates a new webserver and starts it
+func New(config *Config) *Server {
+	ws := websocket.NewWebsocketHandlerService()
+	ws.Listen("/ws")
+
+	http.Handle("/", gziphandler.GzipHandler(http.FileServer(http.Dir(config.Webroot))))
+	return &Server{
+		web: &http.Server{
+			Addr: config.Bind,
+		},
+		ws: ws,
+	}
+}
+
+func (srv *Server) Handler(addr *net.UDPAddr, msg *data.SocketMSG) (*data.SocketMSG, error) {
+	srv.ws.SendAll(&websocket.Message{
+		Subject: "wifictld_pkg",
+		Body: map[string]interface{}{
+			"ip":  addr.IP,
+			"msg": msg,
+		},
+	})
+	return msg, nil
+}
+func (srv *Server) Start() {
+	// service connections
+	if err := srv.web.ListenAndServe(); err != http.ErrServerClosed {
+		log.Panicf("webserver crashed: %s", err)
+	}
+}
+
+func (srv *Server) Close() {
+	srv.web.Close()
+	srv.ws.Close()
+}
diff --git a/web/webserver_test.go b/web/webserver_test.go
new file mode 100644
index 0000000..7acea9f
--- /dev/null
+++ b/web/webserver_test.go
@@ -0,0 +1,28 @@
+package web
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestWebserver(t *testing.T) {
+	assert := assert.New(t)
+
+	srv := New(&Config{
+		Bind:    ":12345",
+		Webroot: "/tmp",
+	})
+	assert.NotNil(srv)
+
+	go srv.Start()
+
+	time.Sleep(time.Millisecond * 200)
+
+	assert.Panics(func() {
+		srv.Start()
+	}, "not allowed to listen twice")
+
+	srv.Close()
+}
diff --git a/webroot/assets/get_assets.sh b/webroot/assets/get_assets.sh
new file mode 100755
index 0000000..04537e7
--- /dev/null
+++ b/webroot/assets/get_assets.sh
@@ -0,0 +1,6 @@
+wget -O vanilla-framework.css https://assets.ubuntu.com/v1/vanilla-framework-version-1.8.1.min.css
+wget -O vue.js https://cdn.jsdelivr.net/npm/vue@2.6.7/dist/vue.js
+wget -O vue-route.js https://unpkg.com/vue-router/dist/vue-router.js
+wget -O vuex.js https://unpkg.com/vuex@2.0.0/dist/vuex.min.js
+wget -O vue-websocket.js https://raw.githubusercontent.com/nathantsoi/vue-native-websocket/master/dist/build.js
+wget -O vue-websocket.js.map https://raw.githubusercontent.com/nathantsoi/vue-native-websocket/master/dist/build.js.map
diff --git a/webroot/assets/vanilla-framework.css b/webroot/assets/vanilla-framework.css
new file mode 100644
index 0000000..0b494a7
--- /dev/null
+++ b/webroot/assets/vanilla-framework.css
@@ -0,0 +1,3 @@
+.p-icon--chevron,.p-icon--close,.p-icon--code,.p-icon--collapse,.p-icon--contextual-menu,.p-icon--copy,.p-icon--delete,.p-icon--error,.p-icon--expand,.p-icon--external-link,.p-icon--help,.p-icon--information,.p-icon--menu,.p-icon--minus,.p-icon--plus,.p-icon--question,.p-icon--search,.p-icon--share,.p-icon--spinner,.p-icon--success,.p-icon--user,.p-icon--warning{height:1rem;width:1rem;background-position:50%;background-repeat:no-repeat;background-size:contain;display:inline-block;margin:0;padding:0;position:relative;top:-2px;vertical-align:sub}.p-icon--canonical,.p-icon--facebook,.p-icon--google,.p-icon--instagram,.p-icon--linkedin,.p-icon--twitter,.p-icon--ubuntu,.p-icon--youtube{height:2.5rem;width:2.5rem;display:inline-block}.p-media-object,.p-media-object--large{display:-ms-flexbox;display:flex;-ms-flex-negative:0;flex-shrink:0;margin-bottom:1.5rem}.p-media-object__meta-list-item,.p-media-object__meta-list-item--date,.p-media-object__meta-list-item--location,.p-media-object__meta-list-item--venue{color:#111;padding-left:2rem}.p-media-object__meta-list-item--date,.p-media-object__meta-list-item--location,.p-media-object__meta-list-item--venue{background-position:0 75%;background-repeat:no-repeat;background-size:1rem}
+
+/*! normalize.css v8.0.0 | MIT License | github.com/necolas/normalize.css */html{line-height:1.15;-webkit-text-size-adjust:100%}body{margin:0}h1{font-size:2em;margin:.67em 0}hr{box-sizing:content-box;height:0;overflow:visible}pre{font-family:monospace,monospace;font-size:1em}a{background-color:transparent}abbr[title]{border-bottom:none;text-decoration:underline;-webkit-text-decoration:underline dotted;text-decoration:underline dotted}b,strong{font-weight:bolder}code,kbd,samp{font-family:monospace,monospace;font-size:1em}small{font-size:80%}sub,sup{font-size:75%}sub{bottom:-.25em}sup{top:-.5em}img{border-style:none}button,input,optgroup,select,textarea{font-family:inherit;font-size:100%}button,input{overflow:visible}button,select{text-transform:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]::-moz-focus-inner,[type=reset]::-moz-focus-inner,[type=submit]::-moz-focus-inner,button::-moz-focus-inner{border-style:none;padding:0}[type=button]:-moz-focusring,[type=reset]:-moz-focusring,[type=submit]:-moz-focusring,button:-moz-focusring{outline:1px dotted ButtonText}fieldset{padding:.35em .75em .625em}legend{box-sizing:border-box;color:inherit;display:table;max-width:100%;padding:0;white-space:normal}progress{vertical-align:baseline}[type=checkbox],[type=radio]{box-sizing:border-box}[type=number]::-webkit-inner-spin-button,[type=number]::-webkit-outer-spin-button{height:auto}[type=search]{-webkit-appearance:textfield;outline-offset:-2px}[type=search]::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}details{display:block}summary{display:list-item}template{display:none}blockquote{border-left:2px solid #666}blockquote>cite{display:block}html{box-sizing:border-box}*,:after,:before{box-sizing:inherit}button{background-color:#fff;border-color:#cdcdcd}button,button:visited{color:#111}button:active,button:hover{background-color:#f7f7f7;border-color:#cdcdcd}button.is--disabled:active,button.is--disabled:hover,button:disabled:active,button:disabled:hover{background-color:transparent;border-color:#cdcdcd}button .p-link--external{color:currentColor}.p-button,.p-button--base,.p-button--brand,.p-button--negative,.p-button--neutral,.p-button--positive,[type=submit],button{transition-duration:.165s;transition-property:background-color,border-color;transition-timing-function:cubic-bezier(.55,.055,.675,.19);border-radius:.125rem;border-style:solid;border-width:1px;cursor:pointer;display:inline-block;font-size:1rem;font-weight:300;line-height:1.5rem;margin-bottom:1.7rem;padding:.3375rem 1rem;text-align:center;text-decoration:none}.p-button--base:focus,.p-button--brand:focus,.p-button--negative:focus,.p-button--neutral:focus,.p-button--positive:focus,.p-button:focus,:focus[type=submit],button:focus{outline:1px solid 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hsla(0,0%,7%,.2);height:1.5rem;margin:.1rem 0 1rem;position:relative;width:3rem}.p-switch__slider:before{transition-duration:.5s;transition-property:all;transition-timing-function:cubic-bezier(.215,.61,.355,1);background:#fff;content:"";height:1.5rem;left:0;position:absolute;width:1.5rem}button.p-switch{-ms-flex-align:stretch;align-items:stretch;border:0;display:-ms-inline-flexbox;display:inline-flex;height:1.5rem;padding:initial;width:3rem}button.p-switch :first-child,button.p-switch :last-child{box-shadow:inset 0 2px 5px 0 hsla(0,0%,7%,.2);line-height:1.5rem;margin:0;text-align:center;width:50%}button.p-switch :first-child{background-color:#335280;border-radius:2px 0 0 2px;color:#fff}button.p-switch :last-child{background-color:#cdcdcd;border-radius:0 2px 2px 0}button.p-switch:before{transition-duration:.5s;transition-property:all;transition-timing-function:cubic-bezier(.215,.61,.355,1);background:inherit;background-color:#fff;border-radius:.125rem;box-shadow:0 1px 5px 1px hsla(0,0%,7%,.2);content:"";display:block;height:100%;left:0;max-height:2rem;padding:0;position:absolute;top:0;width:50%}button.p-switch:after{display:none}button.p-switch[aria-checked=true]:before{left:50%}.p-table-expanding{display:-ms-flexbox;display:flex;-ms-flex-flow:column nowrap;flex-flow:column nowrap;-ms-flex-pack:justify;justify-content:space-between}.p-table-expanding tbody{margin:0}.p-table-expanding tr{display:-ms-flexbox;display:flex;-ms-flex-flow:row;flex-flow:row;-ms-flex-wrap:wrap;flex-wrap:wrap;margin:0;width:100%}.p-table-expanding tr+tr{margin:0}.p-table-expanding td,.p-table-expanding th{display:-ms-flexbox;display:flex;-ms-flex-preferred-size:0;flex-basis:0;-ms-flex-flow:row nowrap;flex-flow:row nowrap;-ms-flex-positive:1;flex-grow:1;margin:0;word-break:break-word}.p-table-expanding td.p-table-expanding__panel,.p-table-expanding th.p-table-expanding__panel{-ms-flex-preferred-size:100%;flex-basis:100%;max-width:100%}.p-table-expanding td.p-table-expanding__panel[aria-hidden=true],.p-table-expanding th.p-table-expanding__panel[aria-hidden=true]{display:none}.p-table-expanding td.p-table-expanding__panel .row,.p-table-expanding th.p-table-expanding__panel .row{max-width:100%;padding:0;width:100%}@media screen and (max-width:1030px){.p-table--mobile-card thead{display:none}.p-table--mobile-card tbody{-ms-flex-pack:justify;justify-content:space-between}.p-table--mobile-card tbody,.p-table--mobile-card tr{display:-ms-flexbox;display:flex;-ms-flex-wrap:wrap;flex-wrap:wrap}.p-table--mobile-card tr{border-top:1px solid #cdcdcd;margin:-1px 0 .5rem;width:100%}.p-table--mobile-card tbody th,.p-table--mobile-card td{-ms-flex-align:start;align-items:flex-start;display:-ms-flexbox;display:flex;-ms-flex:0 1 auto;flex:0 1 auto;-ms-flex-direction:column;flex-direction:column;-ms-flex-pack:left!important;justify-content:left!important;margin:0;overflow:visible;padding-bottom:0;padding-top:0;text-align:left!important;width:25%}.p-table--mobile-card tbody th[aria-label],.p-table--mobile-card td[aria-label]{text-align:right}.p-table--mobile-card tbody th[aria-label]:before,.p-table--mobile-card td[aria-label]:before{content:attr(aria-label);display:block;-ms-flex:0 1 auto;flex:0 1 auto;margin-bottom:0;width:100%}.p-table--mobile-card tbody th.u-align--right,.p-table--mobile-card td.u-align--right{-ms-flex-pack:unset!important;justify-content:unset!important}.p-table--mobile-card .p-contextual-menu,.p-table--mobile-card .p-contextual-menu--center,.p-table--mobile-card .p-contextual-menu--left{width:100%}.p-table--mobile-card .p-contextual-menu--center [role=menuitem],.p-table--mobile-card .p-contextual-menu--left [role=menuitem],.p-table--mobile-card .p-contextual-menu 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.p-tooltip__message:before{border-bottom:8px solid transparent;border-left:8px solid #111;border-right:8px solid transparent;border-top:8px solid transparent;bottom:inherit;left:100%;top:50%;transform:translateX(0) translateY(-50%)}.u-align--center{-ms-flex-pack:center!important;justify-content:center!important;text-align:center!important}.u-align--left{-ms-flex-pack:start!important;justify-content:flex-start!important;text-align:left!important}.u-align--right{-ms-flex-pack:end!important;justify-content:flex-end!important;text-align:right!important}.u-align--bottom{margin-top:auto!important}.u-align-text--center{margin-left:auto!important;margin-right:auto!important;text-align:center!important}.u-align-text--left{margin-right:auto!important;text-align:left!important}.u-align-text--right{margin-left:auto!important;text-align:right!important}.u-animation--spin{animation:a 1s infinite linear}@keyframes a{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}.u-baseline-grid{position:relative}.u-baseline-grid:after{background:linear-gradient(0deg,rgba(255,0,0,.3),rgba(255,0,0,.3) 1px,transparent 0,transparent);background-size:100% .5rem;bottom:0;content:"";display:block;left:0;pointer-events:none;position:absolute;right:0;top:0;z-index:4}.u-baseline-grid__toggle{bottom:1.5rem;position:fixed;right:1.5rem;z-index:5}.u-embedded-media{height:0;margin-top:.5rem;max-width:100%;overflow:hidden;padding-bottom:56.25%;position:relative}.u-embedded-media__element{height:100%;left:0;position:absolute;top:0;width:100%}@media only screen and (min-width:768px){.u-equal-height{display:-ms-flexbox;display:flex}}.u-float--right{float:right!important}.u-float--left{float:left!important}.u-float-right{float:right!important}@media (max-width:620px){.u-float-right--small{float:right!important}}@media (min-width:768px) and (max-width:1030px){.u-float-right--medium{float:right!important}}@media 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[class*=col-]{position:static}.u-image-position--top{top:0}.u-image-position--bottom{bottom:0}.u-image-position--left{left:0}.u-image-position--right{right:0}}.u-no-margin{margin:0!important}.u-no-margin--top{margin-top:0!important}.u-no-margin--right{margin-right:0!important}.u-no-margin--bottom{margin-bottom:0!important}.u-no-margin--left{margin-left:0!important}.u-off-screen{height:1px!important;left:-10000px!important;overflow:hidden!important;position:absolute!important;top:auto!important;width:1px!important}.u-no-padding{padding:0!important}.u-no-padding--top{padding-top:0!important}.u-no-padding--right{padding-right:0!important}.u-no-padding--bottom{padding-bottom:0!important}.u-no-padding--left{padding-left:0!important}.u-show{display:inherit!important}@media screen and (max-width:768px){.u-show--small{display:inherit!important}}@media (min-width:768px) and (max-width:1030px){.u-show--medium{display:inherit!important}}@media screen and (min-width:1030px){.u-show--large{display:inherit!important}}.u-sv0:after,.u-sv1:after,.u-sv2:after,.u-sv3:after,.u-sv-1:after,.u-sv-2:after,.u-sv-3:after{content:"";display:block;height:.0625rem;position:relative}.u-sv-3:after{margin-top:-1.5625rem}.u-sv-2:after{margin-top:-1.0625rem}.u-sv-1:after{margin-top:-.5625rem}.u-sv0:after{margin-top:-.0625rem}.u-sv1:after{margin-top:.4375rem}.u-sv2:after{margin-top:.9375rem}.u-sv3:after{margin-top:1.4375rem}@media (min-width:768px){.u-vertically-center{-ms-flex-align:center!important;align-items:center!important;display:-ms-flexbox!important;display:flex!important}.u-vertically-center>img{-ms-flex-item-align:center!important;align-self:center!important}}.u-hidden{display:none!important}@media screen and (max-width:768px){.u-hidden--small{display:none!important}}@media (min-width:768px) and (max-width:1030px){.u-hidden--medium{display:none!important}}@media screen and (min-width:1030px){.u-hidden--large{display:none!important}}.u-visible{display:inherit!important}@media screen and (max-width:768px){.u-visible--small{display:inherit!important}}@media (min-width:768px) and (max-width:1030px){.u-visible--medium{display:inherit!important}}@media screen and (min-width:1030px){.u-visible--large{display:inherit!important}}
\ No newline at end of file
diff --git a/webroot/assets/vue-route.js b/webroot/assets/vue-route.js
new file mode 100644
index 0000000..c20aa9f
--- /dev/null
+++ b/webroot/assets/vue-route.js
@@ -0,0 +1,2626 @@
+/*!
+  * vue-router v3.0.2
+  * (c) 2018 Evan You
+  * @license MIT
+  */
+(function (global, factory) {
+	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+	typeof define === 'function' && define.amd ? define(factory) :
+	(global.VueRouter = factory());
+}(this, (function () { 'use strict';
+
+/*  */
+
+function assert (condition, message) {
+  if (!condition) {
+    throw new Error(("[vue-router] " + message))
+  }
+}
+
+function warn (condition, message) {
+  if ("development" !== 'production' && !condition) {
+    typeof console !== 'undefined' && console.warn(("[vue-router] " + message));
+  }
+}
+
+function isError (err) {
+  return Object.prototype.toString.call(err).indexOf('Error') > -1
+}
+
+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) {
+      if (parent.$vnode && parent.$vnode.data.routerView) {
+        depth++;
+      }
+      if (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;
+    };
+
+    // 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) {
+    "development" !== 'production' && 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$$1 = router && router.options.stringifyQuery;
+
+  var query = location.query || {};
+  try {
+    query = clone(query);
+  } catch (e) {}
+
+  var route = {
+    name: location.name || (record && record.name),
+    meta: (record && record.meta) || {},
+    path: location.path || '/',
+    hash: location.hash || '',
+    query: query,
+    params: location.params || {},
+    fullPath: getFullPath(location, stringifyQuery$$1),
+    matched: record ? formatMatch(record) : []
+  };
+  if (redirectedFrom) {
+    route.redirectedFrom = getFullPath(redirectedFrom, stringifyQuery$$1);
+  }
+  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
+}
+
+/*  */
+
+// work around weird flow bug
+var toTypes = [String, Object];
+var eventTypes = [String, Array];
+
+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 = location.path
+      ? createRoute(null, location, 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$1.replace) {
+          router.replace(location);
+        } else {
+          router.push(location);
+        }
+      }
+    };
+
+    var on = { click: guardEvent };
+    if (Array.isArray(this.event)) {
+      this.event.forEach(function (e) { on[e] = handler; });
+    } else {
+      on[this.event] = handler;
+    }
+
+    var data = {
+      class: classes
+    };
+
+    if (this.tag === 'a') {
+      data.on = on;
+      data.attrs = { href: href };
+    } else {
+      // find the first <a> child and apply listener and href
+      var a = findAnchor(this.$slots.default);
+      if (a) {
+        // in case the <a> is a static node
+        a.isStatic = false;
+        var aData = a.data = extend({}, a.data);
+        aData.on = on;
+        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 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
+) {
+  try {
+    var filler =
+      regexpCompileCache[path] ||
+      (regexpCompileCache[path] = pathToRegexp_1.compile(path));
+    return filler(params || {}, { pretty: true })
+  } catch (e) {
+    {
+      warn(false, ("missing param for " + routeMsg + ": " + (e.message)));
+    }
+    return ''
+  }
+}
+
+/*  */
+
+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--;
+    }
+  }
+
+  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 (route.alias !== undefined) {
+    var aliases = Array.isArray(route.alias)
+      ? route.alias
+      : [route.alias];
+
+    aliases.forEach(function (alias) {
+      var aliasRoute = {
+        path: alias,
+        children: route.children
+      };
+      addRouteRecord(
+        pathList,
+        pathMap,
+        nameMap,
+        aliasRoute,
+        parent,
+        record.path || '/' // matchAs
+      );
+    });
+  }
+
+  if (!pathMap[record.path]) {
+    pathList.push(record.path);
+    pathMap[record.path] = record;
+  }
+
+  if (name) {
+    if (!nameMap[name]) {
+      nameMap[name] = record;
+    } else if ("development" !== 'production' && !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 normalizeLocation (
+  raw,
+  current,
+  append,
+  router
+) {
+  var next = typeof raw === 'string' ? { path: raw } : raw;
+  // named target
+  if (next.name || next._normalized) {
+    return next
+  }
+
+  // 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
+  }
+}
+
+/*  */
+
+
+
+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];
+          }
+        }
+      }
+
+      if (record) {
+        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)
+}
+
+/*  */
+
+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
+  window.history.replaceState({ key: getStateKey() }, '', window.location.href.replace(window.location.origin, ''));
+  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'
+}
+
+function scrollToPosition (shouldScroll, position) {
+  var isObject = typeof shouldScroll === 'object';
+  if (isObject && typeof shouldScroll.selector === 'string') {
+    var el = 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
+})();
+
+// use User Timing api (if present) for more accurate key precision
+var Time = inBrowser && window.performance && window.performance.now
+  ? window.performance
+  : Date;
+
+var _key = genKey();
+
+function genKey () {
+  return Time.now().toFixed(3)
+}
+
+function getStateKey () {
+  return _key
+}
+
+function setStateKey (key) {
+  _key = key;
+}
+
+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: _key }, '', url);
+    } else {
+      _key = genKey();
+      history.pushState({ key: _key }, '', 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;
+          "development" !== 'production' && 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 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) {
+    if (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()
+  }
+
+  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) {
+      next(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);
+        });
+      }
+    })
+  }
+}
+
+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 = (function (History$$1) {
+  function HTML5History (router, base) {
+    var this$1 = this;
+
+    History$$1.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$$1 ) HTML5History.__proto__ = History$$1;
+  HTML5History.prototype = Object.create( History$$1 && History$$1.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 = (function (History$$1) {
+  function HashHistory (router, base, fallback) {
+    History$$1.call(this, router, base);
+    // check history fallback deeplinking
+    if (fallback && checkFallback(this.base)) {
+      return
+    }
+    ensureSlash();
+  }
+
+  if ( History$$1 ) HashHistory.__proto__ = History$$1;
+  HashHistory.prototype = Object.create( History$$1 && History$$1.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('#');
+  return index === -1 ? '' : decodeURI(href.slice(index + 1))
+}
+
+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 = (function (History$$1) {
+  function AbstractHistory (router, base) {
+    History$$1.call(this, router, base);
+    this.stack = [];
+    this.index = -1;
+  }
+
+  if ( History$$1 ) AbstractHistory.__proto__ = History$$1;
+  AbstractHistory.prototype = Object.create( History$$1 && History$$1.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);
+    });
+  };
+
+  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;
+
+  "development" !== 'production' && assert(
+    install.installed,
+    "not installed. Make sure to call `Vue.use(VueRouter)` " +
+    "before creating root instance."
+  );
+
+  this.apps.push(app);
+
+  // main app already initialized.
+  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) {
+  this.history.push(location, onComplete, onAbort);
+};
+
+VueRouter.prototype.replace = function replace (location, onComplete, onAbort) {
+  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
+) {
+  var location = normalizeLocation(
+    to,
+    current || this.history.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 = '3.0.2';
+
+if (inBrowser && window.Vue) {
+  window.Vue.use(VueRouter);
+}
+
+return VueRouter;
+
+})));
diff --git a/webroot/assets/vue-websocket.js b/webroot/assets/vue-websocket.js
new file mode 100644
index 0000000..b3ed931
--- /dev/null
+++ b/webroot/assets/vue-websocket.js
@@ -0,0 +1 @@
+!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.VueNativeSock=e():t.VueNativeSock=e()}("undefined"!=typeof self?self:this,function(){return function(t){function e(o){if(n[o])return n[o].exports;var r=n[o]={i:o,l:!1,exports:{}};return t[o].call(r.exports,r,r.exports,e),r.l=!0,r.exports}var n={};return e.m=t,e.c=n,e.d=function(t,n,o){e.o(t,n)||Object.defineProperty(t,n,{configurable:!1,enumerable:!0,get:o})},e.n=function(t){var n=t&&t.__esModule?function(){return t.default}:function(){return t};return e.d(n,"a",n),n},e.o=function(t,e){return Object.prototype.hasOwnProperty.call(t,e)},e.p="",e(e.s=1)}([function(t,e,n){"use strict";function o(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}Object.defineProperty(e,"__esModule",{value:!0});var r=function(){function t(t,e){for(var n=0;n<e.length;n++){var 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return '[UnexpectedJSONParseError]: ' + err.message;\n  }\n};\n\n\n/**\n * Colorize log arguments if enabled.\n *\n * @api public\n */\n\nfunction formatArgs() {\n  var args = arguments;\n  var useColors = this.useColors;\n\n  args[0] = (useColors ? '%c' : '')\n    + this.namespace\n    + (useColors ? ' %c' : ' ')\n    + args[0]\n    + (useColors ? '%c ' : ' ')\n    + '+' + exports.humanize(this.diff);\n\n  if (!useColors) return args;\n\n  var c = 'color: ' + this.color;\n  args = [args[0], c, 'color: inherit'].concat(Array.prototype.slice.call(args, 1));\n\n  // the final \"%c\" is somewhat tricky, because there could be other\n  // arguments passed either before or after the %c, so we need to\n  // figure out the correct index to insert the CSS into\n  var index = 0;\n  var lastC = 0;\n  args[0].replace(/%[a-z%]/g, function(match) {\n    if ('%%' === match) return;\n    index++;\n    if ('%c' === match) {\n      // we only are interested in the *last* %c\n      // (the user may have provided their own)\n      lastC = index;\n    }\n  });\n\n  args.splice(lastC, 0, c);\n  return args;\n}\n\n/**\n * Invokes `console.log()` when available.\n * No-op when `console.log` is not a \"function\".\n *\n * @api public\n */\n\nfunction log() {\n  // this hackery is required for IE8/9, where\n  // the `console.log` function doesn't have 'apply'\n  return 'object' === typeof console\n    && console.log\n    && Function.prototype.apply.call(console.log, console, arguments);\n}\n\n/**\n * Save `namespaces`.\n *\n * @param {String} namespaces\n * @api private\n */\n\nfunction save(namespaces) {\n  try {\n    if (null == namespaces) {\n      exports.storage.removeItem('debug');\n    } else {\n      exports.storage.debug = namespaces;\n    }\n  } catch(e) {}\n}\n\n/**\n * Load `namespaces`.\n *\n * @return {String} returns the previously persisted debug modes\n * @api private\n */\n\nfunction load() {\n  var r;\n  try {\n    return exports.storage.debug;\n  } catch(e) {}\n\n  // If debug isn't set in LS, and we're in Electron, try to load $DEBUG\n  if (typeof process !== 'undefined' && 'env' in process) {\n    return process.env.DEBUG;\n  }\n}\n\n/**\n * Enable namespaces listed in `localStorage.debug` initially.\n */\n\nexports.enable(load());\n\n/**\n * Localstorage attempts to return the localstorage.\n *\n * This is necessary because safari throws\n * when a user disables cookies/localstorage\n * and you attempt to access it.\n *\n * @return {LocalStorage}\n * @api private\n */\n\nfunction localstorage(){\n  try {\n    return window.localStorage;\n  } catch (e) {}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/debug/browser.js\n// module id = 1\n// module chunks = 0","/**\n * Module dependencies.\n */\n\nvar keys = require('./keys');\nvar hasBinary = require('has-binary');\nvar sliceBuffer = require('arraybuffer.slice');\nvar after = require('after');\nvar utf8 = require('wtf-8');\n\nvar base64encoder;\nif (global && global.ArrayBuffer) {\n  base64encoder = require('base64-arraybuffer');\n}\n\n/**\n * Check if we are running an android browser. That requires us to use\n * ArrayBuffer with polling transports...\n *\n * http://ghinda.net/jpeg-blob-ajax-android/\n */\n\nvar isAndroid = typeof navigator !== 'undefined' && /Android/i.test(navigator.userAgent);\n\n/**\n * Check if we are running in PhantomJS.\n * Uploading a Blob with PhantomJS does not work correctly, as reported here:\n * https://github.com/ariya/phantomjs/issues/11395\n * @type boolean\n */\nvar isPhantomJS = typeof navigator !== 'undefined' && /PhantomJS/i.test(navigator.userAgent);\n\n/**\n * When true, avoids using Blobs to encode payloads.\n * @type boolean\n */\nvar dontSendBlobs = isAndroid || isPhantomJS;\n\n/**\n * Current protocol version.\n */\n\nexports.protocol = 3;\n\n/**\n * Packet types.\n */\n\nvar packets = exports.packets = {\n    open:     0    // non-ws\n  , close:    1    // non-ws\n  , ping:     2\n  , pong:     3\n  , message:  4\n  , upgrade:  5\n  , noop:     6\n};\n\nvar packetslist = keys(packets);\n\n/**\n * Premade error packet.\n */\n\nvar err = { type: 'error', data: 'parser error' };\n\n/**\n * Create a blob api even for blob builder when vendor prefixes exist\n */\n\nvar Blob = require('blob');\n\n/**\n * Encodes a packet.\n *\n *     <packet type id> [ <data> ]\n *\n * Example:\n *\n *     5hello world\n *     3\n *     4\n *\n * Binary is encoded in an identical principle\n *\n * @api private\n */\n\nexports.encodePacket = function (packet, supportsBinary, utf8encode, callback) {\n  if ('function' == typeof supportsBinary) {\n    callback = supportsBinary;\n    supportsBinary = false;\n  }\n\n  if ('function' == typeof utf8encode) {\n    callback = utf8encode;\n    utf8encode = null;\n  }\n\n  var data = (packet.data === undefined)\n    ? undefined\n    : packet.data.buffer || packet.data;\n\n  if (global.ArrayBuffer && data instanceof ArrayBuffer) {\n    return encodeArrayBuffer(packet, supportsBinary, callback);\n  } else if (Blob && data instanceof global.Blob) {\n    return encodeBlob(packet, supportsBinary, callback);\n  }\n\n  // might be an object with { base64: true, data: dataAsBase64String }\n  if (data && data.base64) {\n    return encodeBase64Object(packet, callback);\n  }\n\n  // Sending data as a utf-8 string\n  var encoded = packets[packet.type];\n\n  // data fragment is optional\n  if (undefined !== packet.data) {\n    encoded += utf8encode ? utf8.encode(String(packet.data)) : String(packet.data);\n  }\n\n  return callback('' + encoded);\n\n};\n\nfunction encodeBase64Object(packet, callback) {\n  // packet data is an object { base64: true, data: dataAsBase64String }\n  var message = 'b' + exports.packets[packet.type] + packet.data.data;\n  return callback(message);\n}\n\n/**\n * Encode packet helpers for binary types\n */\n\nfunction encodeArrayBuffer(packet, supportsBinary, callback) {\n  if (!supportsBinary) {\n    return exports.encodeBase64Packet(packet, callback);\n  }\n\n  var data = packet.data;\n  var contentArray = new Uint8Array(data);\n  var resultBuffer = new Uint8Array(1 + data.byteLength);\n\n  resultBuffer[0] = packets[packet.type];\n  for (var i = 0; i < contentArray.length; i++) {\n    resultBuffer[i+1] = contentArray[i];\n  }\n\n  return callback(resultBuffer.buffer);\n}\n\nfunction encodeBlobAsArrayBuffer(packet, supportsBinary, callback) {\n  if (!supportsBinary) {\n    return exports.encodeBase64Packet(packet, callback);\n  }\n\n  var fr = new FileReader();\n  fr.onload = function() {\n    packet.data = fr.result;\n    exports.encodePacket(packet, supportsBinary, true, callback);\n  };\n  return fr.readAsArrayBuffer(packet.data);\n}\n\nfunction encodeBlob(packet, supportsBinary, callback) {\n  if (!supportsBinary) {\n    return exports.encodeBase64Packet(packet, callback);\n  }\n\n  if (dontSendBlobs) {\n    return encodeBlobAsArrayBuffer(packet, supportsBinary, callback);\n  }\n\n  var length = new Uint8Array(1);\n  length[0] = packets[packet.type];\n  var blob = new Blob([length.buffer, packet.data]);\n\n  return callback(blob);\n}\n\n/**\n * Encodes a packet with binary data in a base64 string\n *\n * @param {Object} packet, has `type` and `data`\n * @return {String} base64 encoded message\n */\n\nexports.encodeBase64Packet = function(packet, callback) {\n  var message = 'b' + exports.packets[packet.type];\n  if (Blob && packet.data instanceof global.Blob) {\n    var fr = new FileReader();\n    fr.onload = function() {\n      var b64 = fr.result.split(',')[1];\n      callback(message + b64);\n    };\n    return fr.readAsDataURL(packet.data);\n  }\n\n  var b64data;\n  try {\n    b64data = String.fromCharCode.apply(null, new Uint8Array(packet.data));\n  } catch (e) {\n    // iPhone Safari doesn't let you apply with typed arrays\n    var typed = new Uint8Array(packet.data);\n    var basic = new Array(typed.length);\n    for (var i = 0; i < typed.length; i++) {\n      basic[i] = typed[i];\n    }\n    b64data = String.fromCharCode.apply(null, basic);\n  }\n  message += global.btoa(b64data);\n  return callback(message);\n};\n\n/**\n * Decodes a packet. Changes format to Blob if requested.\n *\n * @return {Object} with `type` and `data` (if any)\n * @api private\n */\n\nexports.decodePacket = function (data, binaryType, utf8decode) {\n  if (data === undefined) {\n    return err;\n  }\n  // String data\n  if (typeof data == 'string') {\n    if (data.charAt(0) == 'b') {\n      return exports.decodeBase64Packet(data.substr(1), binaryType);\n    }\n\n    if (utf8decode) {\n      data = tryDecode(data);\n      if (data === false) {\n        return err;\n      }\n    }\n    var type = data.charAt(0);\n\n    if (Number(type) != type || !packetslist[type]) {\n      return err;\n    }\n\n    if (data.length > 1) {\n      return { type: packetslist[type], data: data.substring(1) };\n    } else {\n      return { type: packetslist[type] };\n    }\n  }\n\n  var asArray = new Uint8Array(data);\n  var type = asArray[0];\n  var rest = sliceBuffer(data, 1);\n  if (Blob && binaryType === 'blob') {\n    rest = new Blob([rest]);\n  }\n  return { type: packetslist[type], data: rest };\n};\n\nfunction tryDecode(data) {\n  try {\n    data = utf8.decode(data);\n  } catch (e) {\n    return false;\n  }\n  return data;\n}\n\n/**\n * Decodes a packet encoded in a base64 string\n *\n * @param {String} base64 encoded message\n * @return {Object} with `type` and `data` (if any)\n */\n\nexports.decodeBase64Packet = function(msg, binaryType) {\n  var type = packetslist[msg.charAt(0)];\n  if (!base64encoder) {\n    return { type: type, data: { base64: true, data: msg.substr(1) } };\n  }\n\n  var data = base64encoder.decode(msg.substr(1));\n\n  if (binaryType === 'blob' && Blob) {\n    data = new Blob([data]);\n  }\n\n  return { type: type, data: data };\n};\n\n/**\n * Encodes multiple messages (payload).\n *\n *     <length>:data\n *\n * Example:\n *\n *     11:hello world2:hi\n *\n * If any contents are binary, they will be encoded as base64 strings. Base64\n * encoded strings are marked with a b before the length specifier\n *\n * @param {Array} packets\n * @api private\n */\n\nexports.encodePayload = function (packets, supportsBinary, callback) {\n  if (typeof supportsBinary == 'function') {\n    callback = supportsBinary;\n    supportsBinary = null;\n  }\n\n  var isBinary = hasBinary(packets);\n\n  if (supportsBinary && isBinary) {\n    if (Blob && !dontSendBlobs) {\n      return exports.encodePayloadAsBlob(packets, callback);\n    }\n\n    return exports.encodePayloadAsArrayBuffer(packets, callback);\n  }\n\n  if (!packets.length) {\n    return callback('0:');\n  }\n\n  function setLengthHeader(message) {\n    return message.length + ':' + message;\n  }\n\n  function encodeOne(packet, doneCallback) {\n    exports.encodePacket(packet, !isBinary ? false : supportsBinary, true, function(message) {\n      doneCallback(null, setLengthHeader(message));\n    });\n  }\n\n  map(packets, encodeOne, function(err, results) {\n    return callback(results.join(''));\n  });\n};\n\n/**\n * Async array map using after\n */\n\nfunction map(ary, each, done) {\n  var result = new Array(ary.length);\n  var next = after(ary.length, done);\n\n  var eachWithIndex = function(i, el, cb) {\n    each(el, function(error, msg) {\n      result[i] = msg;\n      cb(error, result);\n    });\n  };\n\n  for (var i = 0; i < ary.length; i++) {\n    eachWithIndex(i, ary[i], next);\n  }\n}\n\n/*\n * Decodes data when a payload is maybe expected. Possible binary contents are\n * decoded from their base64 representation\n *\n * @param {String} data, callback method\n * @api public\n */\n\nexports.decodePayload = function (data, binaryType, callback) {\n  if (typeof data != 'string') {\n    return exports.decodePayloadAsBinary(data, binaryType, callback);\n  }\n\n  if (typeof binaryType === 'function') {\n    callback = binaryType;\n    binaryType = null;\n  }\n\n  var packet;\n  if (data == '') {\n    // parser error - ignoring payload\n    return callback(err, 0, 1);\n  }\n\n  var length = ''\n    , n, msg;\n\n  for (var i = 0, l = data.length; i < l; i++) {\n    var chr = data.charAt(i);\n\n    if (':' != chr) {\n      length += chr;\n    } else {\n      if ('' == length || (length != (n = Number(length)))) {\n        // parser error - ignoring payload\n        return callback(err, 0, 1);\n      }\n\n      msg = data.substr(i + 1, n);\n\n      if (length != msg.length) {\n        // parser error - ignoring payload\n        return callback(err, 0, 1);\n      }\n\n      if (msg.length) {\n        packet = exports.decodePacket(msg, binaryType, true);\n\n        if (err.type == packet.type && err.data == packet.data) {\n          // parser error in individual packet - ignoring payload\n          return callback(err, 0, 1);\n        }\n\n        var ret = callback(packet, i + n, l);\n        if (false === ret) return;\n      }\n\n      // advance cursor\n      i += n;\n      length = '';\n    }\n  }\n\n  if (length != '') {\n    // parser error - ignoring payload\n    return callback(err, 0, 1);\n  }\n\n};\n\n/**\n * Encodes multiple messages (payload) as binary.\n *\n * <1 = binary, 0 = string><number from 0-9><number from 0-9>[...]<number\n * 255><data>\n *\n * Example:\n * 1 3 255 1 2 3, if the binary contents are interpreted as 8 bit integers\n *\n * @param {Array} packets\n * @return {ArrayBuffer} encoded payload\n * @api private\n */\n\nexports.encodePayloadAsArrayBuffer = function(packets, callback) {\n  if (!packets.length) {\n    return callback(new ArrayBuffer(0));\n  }\n\n  function encodeOne(packet, doneCallback) {\n    exports.encodePacket(packet, true, true, function(data) {\n      return doneCallback(null, data);\n    });\n  }\n\n  map(packets, encodeOne, function(err, encodedPackets) {\n    var totalLength = encodedPackets.reduce(function(acc, p) {\n      var len;\n      if (typeof p === 'string'){\n        len = p.length;\n      } else {\n        len = p.byteLength;\n      }\n      return acc + len.toString().length + len + 2; // string/binary identifier + separator = 2\n    }, 0);\n\n    var resultArray = new Uint8Array(totalLength);\n\n    var bufferIndex = 0;\n    encodedPackets.forEach(function(p) {\n      var isString = typeof p === 'string';\n      var ab = p;\n      if (isString) {\n        var view = new Uint8Array(p.length);\n        for (var i = 0; i < p.length; i++) {\n          view[i] = p.charCodeAt(i);\n        }\n        ab = view.buffer;\n      }\n\n      if (isString) { // not true binary\n        resultArray[bufferIndex++] = 0;\n      } else { // true binary\n        resultArray[bufferIndex++] = 1;\n      }\n\n      var lenStr = ab.byteLength.toString();\n      for (var i = 0; i < lenStr.length; i++) {\n        resultArray[bufferIndex++] = parseInt(lenStr[i]);\n      }\n      resultArray[bufferIndex++] = 255;\n\n      var view = new Uint8Array(ab);\n      for (var i = 0; i < view.length; i++) {\n        resultArray[bufferIndex++] = view[i];\n      }\n    });\n\n    return callback(resultArray.buffer);\n  });\n};\n\n/**\n * Encode as Blob\n */\n\nexports.encodePayloadAsBlob = function(packets, callback) {\n  function encodeOne(packet, doneCallback) {\n    exports.encodePacket(packet, true, true, function(encoded) {\n      var binaryIdentifier = new Uint8Array(1);\n      binaryIdentifier[0] = 1;\n      if (typeof encoded === 'string') {\n        var view = new Uint8Array(encoded.length);\n        for (var i = 0; i < encoded.length; i++) {\n          view[i] = encoded.charCodeAt(i);\n        }\n        encoded = view.buffer;\n        binaryIdentifier[0] = 0;\n      }\n\n      var len = (encoded instanceof ArrayBuffer)\n        ? encoded.byteLength\n        : encoded.size;\n\n      var lenStr = len.toString();\n      var lengthAry = new Uint8Array(lenStr.length + 1);\n      for (var i = 0; i < lenStr.length; i++) {\n        lengthAry[i] = parseInt(lenStr[i]);\n      }\n      lengthAry[lenStr.length] = 255;\n\n      if (Blob) {\n        var blob = new Blob([binaryIdentifier.buffer, lengthAry.buffer, encoded]);\n        doneCallback(null, blob);\n      }\n    });\n  }\n\n  map(packets, encodeOne, function(err, results) {\n    return callback(new Blob(results));\n  });\n};\n\n/*\n * Decodes data when a payload is maybe expected. Strings are decoded by\n * interpreting each byte as a key code for entries marked to start with 0. See\n * description of encodePayloadAsBinary\n *\n * @param {ArrayBuffer} data, callback method\n * @api public\n */\n\nexports.decodePayloadAsBinary = function (data, binaryType, callback) {\n  if (typeof binaryType === 'function') {\n    callback = binaryType;\n    binaryType = null;\n  }\n\n  var bufferTail = data;\n  var buffers = [];\n\n  var numberTooLong = false;\n  while (bufferTail.byteLength > 0) {\n    var tailArray = new Uint8Array(bufferTail);\n    var isString = tailArray[0] === 0;\n    var msgLength = '';\n\n    for (var i = 1; ; i++) {\n      if (tailArray[i] == 255) break;\n\n      if (msgLength.length > 310) {\n        numberTooLong = true;\n        break;\n      }\n\n      msgLength += tailArray[i];\n    }\n\n    if(numberTooLong) return callback(err, 0, 1);\n\n    bufferTail = sliceBuffer(bufferTail, 2 + msgLength.length);\n    msgLength = parseInt(msgLength);\n\n    var msg = sliceBuffer(bufferTail, 0, msgLength);\n    if (isString) {\n      try {\n        msg = String.fromCharCode.apply(null, new Uint8Array(msg));\n      } catch (e) {\n        // iPhone Safari doesn't let you apply to typed arrays\n        var typed = new Uint8Array(msg);\n        msg = '';\n        for (var i = 0; i < typed.length; i++) {\n          msg += String.fromCharCode(typed[i]);\n        }\n      }\n    }\n\n    buffers.push(msg);\n    bufferTail = sliceBuffer(bufferTail, msgLength);\n  }\n\n  var total = buffers.length;\n  buffers.forEach(function(buffer, i) {\n    callback(exports.decodePacket(buffer, binaryType, true), i, total);\n  });\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-parser/lib/browser.js\n// module id = 2\n// module chunks = 0","\r\n/**\r\n * Expose `Emitter`.\r\n */\r\n\r\nif (typeof module !== 'undefined') {\r\n  module.exports = Emitter;\r\n}\r\n\r\n/**\r\n * Initialize a new `Emitter`.\r\n *\r\n * @api public\r\n */\r\n\r\nfunction Emitter(obj) {\r\n  if (obj) return mixin(obj);\r\n};\r\n\r\n/**\r\n * Mixin the emitter properties.\r\n *\r\n * @param {Object} obj\r\n * @return {Object}\r\n * @api private\r\n */\r\n\r\nfunction mixin(obj) {\r\n  for (var key in Emitter.prototype) {\r\n    obj[key] = Emitter.prototype[key];\r\n  }\r\n  return obj;\r\n}\r\n\r\n/**\r\n * Listen on the given `event` with `fn`.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.on =\r\nEmitter.prototype.addEventListener = function(event, fn){\r\n  this._callbacks = this._callbacks || {};\r\n  (this._callbacks['$' + event] = this._callbacks['$' + event] || [])\r\n    .push(fn);\r\n  return this;\r\n};\r\n\r\n/**\r\n * Adds an `event` listener that will be invoked a single\r\n * time then automatically removed.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.once = function(event, fn){\r\n  function on() {\r\n    this.off(event, on);\r\n    fn.apply(this, arguments);\r\n  }\r\n\r\n  on.fn = fn;\r\n  this.on(event, on);\r\n  return this;\r\n};\r\n\r\n/**\r\n * Remove the given callback for `event` or all\r\n * registered callbacks.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.off =\r\nEmitter.prototype.removeListener =\r\nEmitter.prototype.removeAllListeners =\r\nEmitter.prototype.removeEventListener = function(event, fn){\r\n  this._callbacks = this._callbacks || {};\r\n\r\n  // all\r\n  if (0 == arguments.length) {\r\n    this._callbacks = {};\r\n    return this;\r\n  }\r\n\r\n  // specific event\r\n  var callbacks = this._callbacks['$' + event];\r\n  if (!callbacks) return this;\r\n\r\n  // remove all handlers\r\n  if (1 == arguments.length) {\r\n    delete this._callbacks['$' + event];\r\n    return this;\r\n  }\r\n\r\n  // remove specific handler\r\n  var cb;\r\n  for (var i = 0; i < callbacks.length; i++) {\r\n    cb = callbacks[i];\r\n    if (cb === fn || cb.fn === fn) {\r\n      callbacks.splice(i, 1);\r\n      break;\r\n    }\r\n  }\r\n  return this;\r\n};\r\n\r\n/**\r\n * Emit `event` with the given args.\r\n *\r\n * @param {String} event\r\n * @param {Mixed} ...\r\n * @return {Emitter}\r\n */\r\n\r\nEmitter.prototype.emit = function(event){\r\n  this._callbacks = this._callbacks || {};\r\n  var args = [].slice.call(arguments, 1)\r\n    , callbacks = this._callbacks['$' + event];\r\n\r\n  if (callbacks) {\r\n    callbacks = callbacks.slice(0);\r\n    for (var i = 0, len = callbacks.length; i < len; ++i) {\r\n      callbacks[i].apply(this, args);\r\n    }\r\n  }\r\n\r\n  return this;\r\n};\r\n\r\n/**\r\n * Return array of callbacks for `event`.\r\n *\r\n * @param {String} event\r\n * @return {Array}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.listeners = function(event){\r\n  this._callbacks = this._callbacks || {};\r\n  return this._callbacks['$' + event] || [];\r\n};\r\n\r\n/**\r\n * Check if this emitter has `event` handlers.\r\n *\r\n * @param {String} event\r\n * @return {Boolean}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.hasListeners = function(event){\r\n  return !! this.listeners(event).length;\r\n};\r\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/component-emitter/index.js\n// module id = 3\n// module chunks = 0","\nmodule.exports = function(a, b){\n  var fn = function(){};\n  fn.prototype = b.prototype;\n  a.prototype = new fn;\n  a.prototype.constructor = a;\n};\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/component-inherit/index.js\n// module id = 4\n// module chunks = 0","/**\n * Module dependencies.\n */\n\nvar parser = require('engine.io-parser');\nvar Emitter = require('component-emitter');\n\n/**\n * Module exports.\n */\n\nmodule.exports = Transport;\n\n/**\n * Transport abstract constructor.\n *\n * @param {Object} options.\n * @api private\n */\n\nfunction Transport (opts) {\n  this.path = opts.path;\n  this.hostname = opts.hostname;\n  this.port = opts.port;\n  this.secure = opts.secure;\n  this.query = opts.query;\n  this.timestampParam = opts.timestampParam;\n  this.timestampRequests = opts.timestampRequests;\n  this.readyState = '';\n  this.agent = opts.agent || false;\n  this.socket = opts.socket;\n  this.enablesXDR = opts.enablesXDR;\n\n  // SSL options for Node.js client\n  this.pfx = opts.pfx;\n  this.key = opts.key;\n  this.passphrase = opts.passphrase;\n  this.cert = opts.cert;\n  this.ca = opts.ca;\n  this.ciphers = opts.ciphers;\n  this.rejectUnauthorized = opts.rejectUnauthorized;\n  this.forceNode = opts.forceNode;\n\n  // other options for Node.js client\n  this.extraHeaders = opts.extraHeaders;\n  this.localAddress = opts.localAddress;\n}\n\n/**\n * Mix in `Emitter`.\n */\n\nEmitter(Transport.prototype);\n\n/**\n * Emits an error.\n *\n * @param {String} str\n * @return {Transport} for chaining\n * @api public\n */\n\nTransport.prototype.onError = function (msg, desc) {\n  var err = new Error(msg);\n  err.type = 'TransportError';\n  err.description = desc;\n  this.emit('error', err);\n  return this;\n};\n\n/**\n * Opens the transport.\n *\n * @api public\n */\n\nTransport.prototype.open = function () {\n  if ('closed' === this.readyState || '' === this.readyState) {\n    this.readyState = 'opening';\n    this.doOpen();\n  }\n\n  return this;\n};\n\n/**\n * Closes the transport.\n *\n * @api private\n */\n\nTransport.prototype.close = function () {\n  if ('opening' === this.readyState || 'open' === this.readyState) {\n    this.doClose();\n    this.onClose();\n  }\n\n  return this;\n};\n\n/**\n * Sends multiple packets.\n *\n * @param {Array} packets\n * @api private\n */\n\nTransport.prototype.send = function (packets) {\n  if ('open' === this.readyState) {\n    this.write(packets);\n  } else {\n    throw new Error('Transport not open');\n  }\n};\n\n/**\n * Called upon open\n *\n * @api private\n */\n\nTransport.prototype.onOpen = function () {\n  this.readyState = 'open';\n  this.writable = true;\n  this.emit('open');\n};\n\n/**\n * Called with data.\n *\n * @param {String} data\n * @api private\n */\n\nTransport.prototype.onData = function (data) {\n  var packet = parser.decodePacket(data, this.socket.binaryType);\n  this.onPacket(packet);\n};\n\n/**\n * Called with a decoded packet.\n */\n\nTransport.prototype.onPacket = function (packet) {\n  this.emit('packet', packet);\n};\n\n/**\n * Called upon close.\n *\n * @api private\n */\n\nTransport.prototype.onClose = function () {\n  this.readyState = 'closed';\n  this.emit('close');\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-client/lib/transport.js\n// module id = 5\n// module chunks = 0","// browser shim for xmlhttprequest module\n\nvar hasCORS = require('has-cors');\n\nmodule.exports = function (opts) {\n  var xdomain = opts.xdomain;\n\n  // scheme must be same when usign XDomainRequest\n  // http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx\n  var xscheme = opts.xscheme;\n\n  // XDomainRequest has a flow of not sending cookie, therefore it should be disabled as a default.\n  // https://github.com/Automattic/engine.io-client/pull/217\n  var enablesXDR = opts.enablesXDR;\n\n  // XMLHttpRequest can be disabled on IE\n  try {\n    if ('undefined' !== typeof XMLHttpRequest && (!xdomain || hasCORS)) {\n      return new XMLHttpRequest();\n    }\n  } catch (e) { }\n\n  // Use XDomainRequest for IE8 if enablesXDR is true\n  // because loading bar keeps flashing when using jsonp-polling\n  // https://github.com/yujiosaka/socke.io-ie8-loading-example\n  try {\n    if ('undefined' !== typeof XDomainRequest && !xscheme && enablesXDR) {\n      return new XDomainRequest();\n    }\n  } catch (e) { }\n\n  if (!xdomain) {\n    try {\n      return new global[['Active'].concat('Object').join('X')]('Microsoft.XMLHTTP');\n    } catch (e) { }\n  }\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-client/lib/xmlhttprequest.js\n// module id = 6\n// module chunks = 0","/**\r\n * Compiles a querystring\r\n * Returns string representation of the object\r\n *\r\n * @param {Object}\r\n * @api private\r\n */\r\n\r\nexports.encode = function (obj) {\r\n  var str = '';\r\n\r\n  for (var i in obj) {\r\n    if (obj.hasOwnProperty(i)) {\r\n      if (str.length) str += '&';\r\n      str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);\r\n    }\r\n  }\r\n\r\n  return str;\r\n};\r\n\r\n/**\r\n * Parses a simple querystring into an object\r\n *\r\n * @param {String} qs\r\n * @api private\r\n */\r\n\r\nexports.decode = function(qs){\r\n  var qry = {};\r\n  var pairs = qs.split('&');\r\n  for (var i = 0, l = pairs.length; i < l; i++) {\r\n    var pair = pairs[i].split('=');\r\n    qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);\r\n  }\r\n  return qry;\r\n};\r\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/parseqs/index.js\n// module id = 7\n// module chunks = 0","\n/**\n * Module dependencies.\n */\n\nvar debug = require('debug')('socket.io-parser');\nvar json = require('json3');\nvar Emitter = require('component-emitter');\nvar binary = require('./binary');\nvar isBuf = require('./is-buffer');\n\n/**\n * Protocol version.\n *\n * @api public\n */\n\nexports.protocol = 4;\n\n/**\n * Packet types.\n *\n * @api public\n */\n\nexports.types = [\n  'CONNECT',\n  'DISCONNECT',\n  'EVENT',\n  'ACK',\n  'ERROR',\n  'BINARY_EVENT',\n  'BINARY_ACK'\n];\n\n/**\n * Packet type `connect`.\n *\n * @api public\n */\n\nexports.CONNECT = 0;\n\n/**\n * Packet type `disconnect`.\n *\n * @api public\n */\n\nexports.DISCONNECT = 1;\n\n/**\n * Packet type `event`.\n *\n * @api public\n */\n\nexports.EVENT = 2;\n\n/**\n * Packet type `ack`.\n *\n * @api public\n */\n\nexports.ACK = 3;\n\n/**\n * Packet type `error`.\n *\n * @api public\n */\n\nexports.ERROR = 4;\n\n/**\n * Packet type 'binary event'\n *\n * @api public\n */\n\nexports.BINARY_EVENT = 5;\n\n/**\n * Packet type `binary ack`. For acks with binary arguments.\n *\n * @api public\n */\n\nexports.BINARY_ACK = 6;\n\n/**\n * Encoder constructor.\n *\n * @api public\n */\n\nexports.Encoder = Encoder;\n\n/**\n * Decoder constructor.\n *\n * @api public\n */\n\nexports.Decoder = Decoder;\n\n/**\n * A socket.io Encoder instance\n *\n * @api public\n */\n\nfunction Encoder() {}\n\n/**\n * Encode a packet as a single string if non-binary, or as a\n * buffer sequence, depending on packet type.\n *\n * @param {Object} obj - packet object\n * @param {Function} callback - function to handle encodings (likely engine.write)\n * @return Calls callback with Array of encodings\n * @api public\n */\n\nEncoder.prototype.encode = function(obj, callback){\n  debug('encoding packet %j', obj);\n\n  if (exports.BINARY_EVENT == obj.type || exports.BINARY_ACK == obj.type) {\n    encodeAsBinary(obj, callback);\n  }\n  else {\n    var encoding = encodeAsString(obj);\n    callback([encoding]);\n  }\n};\n\n/**\n * Encode packet as string.\n *\n * @param {Object} packet\n * @return {String} encoded\n * @api private\n */\n\nfunction encodeAsString(obj) {\n  var str = '';\n  var nsp = false;\n\n  // first is type\n  str += obj.type;\n\n  // attachments if we have them\n  if (exports.BINARY_EVENT == obj.type || exports.BINARY_ACK == obj.type) {\n    str += obj.attachments;\n    str += '-';\n  }\n\n  // if we have a namespace other than `/`\n  // we append it followed by a comma `,`\n  if (obj.nsp && '/' != obj.nsp) {\n    nsp = true;\n    str += obj.nsp;\n  }\n\n  // immediately followed by the id\n  if (null != obj.id) {\n    if (nsp) {\n      str += ',';\n      nsp = false;\n    }\n    str += obj.id;\n  }\n\n  // json data\n  if (null != obj.data) {\n    if (nsp) str += ',';\n    str += json.stringify(obj.data);\n  }\n\n  debug('encoded %j as %s', obj, str);\n  return str;\n}\n\n/**\n * Encode packet as 'buffer sequence' by removing blobs, and\n * deconstructing packet into object with placeholders and\n * a list of buffers.\n *\n * @param {Object} packet\n * @return {Buffer} encoded\n * @api private\n */\n\nfunction encodeAsBinary(obj, callback) {\n\n  function writeEncoding(bloblessData) {\n    var deconstruction = binary.deconstructPacket(bloblessData);\n    var pack = encodeAsString(deconstruction.packet);\n    var buffers = deconstruction.buffers;\n\n    buffers.unshift(pack); // add packet info to beginning of data list\n    callback(buffers); // write all the buffers\n  }\n\n  binary.removeBlobs(obj, writeEncoding);\n}\n\n/**\n * A socket.io Decoder instance\n *\n * @return {Object} decoder\n * @api public\n */\n\nfunction Decoder() {\n  this.reconstructor = null;\n}\n\n/**\n * Mix in `Emitter` with Decoder.\n */\n\nEmitter(Decoder.prototype);\n\n/**\n * Decodes an ecoded packet string into packet JSON.\n *\n * @param {String} obj - encoded packet\n * @return {Object} packet\n * @api public\n */\n\nDecoder.prototype.add = function(obj) {\n  var packet;\n  if ('string' == typeof obj) {\n    packet = decodeString(obj);\n    if (exports.BINARY_EVENT == packet.type || exports.BINARY_ACK == packet.type) { // binary packet's json\n      this.reconstructor = new BinaryReconstructor(packet);\n\n      // no attachments, labeled binary but no binary data to follow\n      if (this.reconstructor.reconPack.attachments === 0) {\n        this.emit('decoded', packet);\n      }\n    } else { // non-binary full packet\n      this.emit('decoded', packet);\n    }\n  }\n  else if (isBuf(obj) || obj.base64) { // raw binary data\n    if (!this.reconstructor) {\n      throw new Error('got binary data when not reconstructing a packet');\n    } else {\n      packet = this.reconstructor.takeBinaryData(obj);\n      if (packet) { // received final buffer\n        this.reconstructor = null;\n        this.emit('decoded', packet);\n      }\n    }\n  }\n  else {\n    throw new Error('Unknown type: ' + obj);\n  }\n};\n\n/**\n * Decode a packet String (JSON data)\n *\n * @param {String} str\n * @return {Object} packet\n * @api private\n */\n\nfunction decodeString(str) {\n  var p = {};\n  var i = 0;\n\n  // look up type\n  p.type = Number(str.charAt(0));\n  if (null == exports.types[p.type]) return error();\n\n  // look up attachments if type binary\n  if (exports.BINARY_EVENT == p.type || exports.BINARY_ACK == p.type) {\n    var buf = '';\n    while (str.charAt(++i) != '-') {\n      buf += str.charAt(i);\n      if (i == str.length) break;\n    }\n    if (buf != Number(buf) || str.charAt(i) != '-') {\n      throw new Error('Illegal attachments');\n    }\n    p.attachments = Number(buf);\n  }\n\n  // look up namespace (if any)\n  if ('/' == str.charAt(i + 1)) {\n    p.nsp = '';\n    while (++i) {\n      var c = str.charAt(i);\n      if (',' == c) break;\n      p.nsp += c;\n      if (i == str.length) break;\n    }\n  } else {\n    p.nsp = '/';\n  }\n\n  // look up id\n  var next = str.charAt(i + 1);\n  if ('' !== next && Number(next) == next) {\n    p.id = '';\n    while (++i) {\n      var c = str.charAt(i);\n      if (null == c || Number(c) != c) {\n        --i;\n        break;\n      }\n      p.id += str.charAt(i);\n      if (i == str.length) break;\n    }\n    p.id = Number(p.id);\n  }\n\n  // look up json data\n  if (str.charAt(++i)) {\n    p = tryParse(p, str.substr(i));\n  }\n\n  debug('decoded %s as %j', str, p);\n  return p;\n}\n\nfunction tryParse(p, str) {\n  try {\n    p.data = json.parse(str);\n  } catch(e){\n    return error();\n  }\n  return p; \n};\n\n/**\n * Deallocates a parser's resources\n *\n * @api public\n */\n\nDecoder.prototype.destroy = function() {\n  if (this.reconstructor) {\n    this.reconstructor.finishedReconstruction();\n  }\n};\n\n/**\n * A manager of a binary event's 'buffer sequence'. Should\n * be constructed whenever a packet of type BINARY_EVENT is\n * decoded.\n *\n * @param {Object} packet\n * @return {BinaryReconstructor} initialized reconstructor\n * @api private\n */\n\nfunction BinaryReconstructor(packet) {\n  this.reconPack = packet;\n  this.buffers = [];\n}\n\n/**\n * Method to be called when binary data received from connection\n * after a BINARY_EVENT packet.\n *\n * @param {Buffer | ArrayBuffer} binData - the raw binary data received\n * @return {null | Object} returns null if more binary data is expected or\n *   a reconstructed packet object if all buffers have been received.\n * @api private\n */\n\nBinaryReconstructor.prototype.takeBinaryData = function(binData) {\n  this.buffers.push(binData);\n  if (this.buffers.length == this.reconPack.attachments) { // done with buffer list\n    var packet = binary.reconstructPacket(this.reconPack, this.buffers);\n    this.finishedReconstruction();\n    return packet;\n  }\n  return null;\n};\n\n/**\n * Cleans up binary packet reconstruction variables.\n *\n * @api private\n */\n\nBinaryReconstructor.prototype.finishedReconstruction = function() {\n  this.reconPack = null;\n  this.buffers = [];\n};\n\nfunction error(data){\n  return {\n    type: exports.ERROR,\n    data: 'parser error'\n  };\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/socket.io-parser/index.js\n// module id = 8\n// module chunks = 0","export default new class {\n    constructor() {\n        this.listeners = new Map();\n    }\n\n    addListener(label, callback, vm) {\n        if(typeof callback == 'function'){\n            this.listeners.has(label) || this.listeners.set(label, []);\n            this.listeners.get(label).push({callback: callback, vm: vm});\n\n            return true\n        }\n\n        return false\n    }\n\n    removeListener(label, callback, vm) {\n        let listeners = this.listeners.get(label),\n            index;\n\n        if (listeners && listeners.length) {\n            index = listeners.reduce((i, listener, index) => {\n                return (typeof listener.callback == 'function' && listener.callback === callback && listener.vm == vm) ?\n                    i = index :\n                    i;\n            }, -1);\n\n            if (index > -1) {\n                listeners.splice(index, 1);\n                this.listeners.set(label, listeners);\n                return true;\n            }\n        }\n        return false;\n    }\n\n    emit(label, ...args) {\n        let listeners = this.listeners.get(label);\n\n        if (listeners && listeners.length) {\n            listeners.forEach((listener) => {\n                listener.callback.call(listener.vm,...args)\n            });\n            return true;\n        }\n        return false;\n    }\n\n}\n\n\n// WEBPACK FOOTER //\n// ./src/Emitter.js","/**\n * Slice reference.\n */\n\nvar slice = [].slice;\n\n/**\n * Bind `obj` to `fn`.\n *\n * @param {Object} obj\n * @param {Function|String} fn or string\n * @return {Function}\n * @api public\n */\n\nmodule.exports = function(obj, fn){\n  if ('string' == typeof fn) fn = obj[fn];\n  if ('function' != typeof fn) throw new Error('bind() requires a function');\n  var args = slice.call(arguments, 2);\n  return function(){\n    return fn.apply(obj, args.concat(slice.call(arguments)));\n  }\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/component-bind/index.js\n// module id = 10\n// module chunks = 0","/**\n * Module dependencies\n */\n\nvar XMLHttpRequest = require('xmlhttprequest-ssl');\nvar XHR = require('./polling-xhr');\nvar JSONP = require('./polling-jsonp');\nvar websocket = require('./websocket');\n\n/**\n * Export transports.\n */\n\nexports.polling = polling;\nexports.websocket = websocket;\n\n/**\n * Polling transport polymorphic constructor.\n * Decides on xhr vs jsonp based on feature detection.\n *\n * @api private\n */\n\nfunction polling (opts) {\n  var xhr;\n  var xd = false;\n  var xs = false;\n  var jsonp = false !== opts.jsonp;\n\n  if (global.location) {\n    var isSSL = 'https:' === location.protocol;\n    var port = location.port;\n\n    // some user agents have empty `location.port`\n    if (!port) {\n      port = isSSL ? 443 : 80;\n    }\n\n    xd = opts.hostname !== location.hostname || port !== opts.port;\n    xs = opts.secure !== isSSL;\n  }\n\n  opts.xdomain = xd;\n  opts.xscheme = xs;\n  xhr = new XMLHttpRequest(opts);\n\n  if ('open' in xhr && !opts.forceJSONP) {\n    return new XHR(opts);\n  } else {\n    if (!jsonp) throw new Error('JSONP disabled');\n    return new JSONP(opts);\n  }\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-client/lib/transports/index.js\n// module id = 11\n// module chunks = 0","/**\n * Module dependencies.\n */\n\nvar Transport = require('../transport');\nvar parseqs = require('parseqs');\nvar parser = require('engine.io-parser');\nvar inherit = require('component-inherit');\nvar yeast = require('yeast');\nvar debug = require('debug')('engine.io-client:polling');\n\n/**\n * Module exports.\n */\n\nmodule.exports = Polling;\n\n/**\n * Is XHR2 supported?\n */\n\nvar hasXHR2 = (function () {\n  var XMLHttpRequest = require('xmlhttprequest-ssl');\n  var xhr = new XMLHttpRequest({ xdomain: false });\n  return null != xhr.responseType;\n})();\n\n/**\n * Polling interface.\n *\n * @param {Object} opts\n * @api private\n */\n\nfunction Polling (opts) {\n  var forceBase64 = (opts && opts.forceBase64);\n  if (!hasXHR2 || forceBase64) {\n    this.supportsBinary = false;\n  }\n  Transport.call(this, opts);\n}\n\n/**\n * Inherits from Transport.\n */\n\ninherit(Polling, Transport);\n\n/**\n * Transport name.\n */\n\nPolling.prototype.name = 'polling';\n\n/**\n * Opens the socket (triggers polling). We write a PING message to determine\n * when the transport is open.\n *\n * @api private\n */\n\nPolling.prototype.doOpen = function () {\n  this.poll();\n};\n\n/**\n * Pauses polling.\n *\n * @param {Function} callback upon buffers are flushed and transport is paused\n * @api private\n */\n\nPolling.prototype.pause = function (onPause) {\n  var self = this;\n\n  this.readyState = 'pausing';\n\n  function pause () {\n    debug('paused');\n    self.readyState = 'paused';\n    onPause();\n  }\n\n  if (this.polling || !this.writable) {\n    var total = 0;\n\n    if (this.polling) {\n      debug('we are currently polling - waiting to pause');\n      total++;\n      this.once('pollComplete', function () {\n        debug('pre-pause polling complete');\n        --total || pause();\n      });\n    }\n\n    if (!this.writable) {\n      debug('we are currently writing - waiting to pause');\n      total++;\n      this.once('drain', function () {\n        debug('pre-pause writing complete');\n        --total || pause();\n      });\n    }\n  } else {\n    pause();\n  }\n};\n\n/**\n * Starts polling cycle.\n *\n * @api public\n */\n\nPolling.prototype.poll = function () {\n  debug('polling');\n  this.polling = true;\n  this.doPoll();\n  this.emit('poll');\n};\n\n/**\n * Overloads onData to detect payloads.\n *\n * @api private\n */\n\nPolling.prototype.onData = function (data) {\n  var self = this;\n  debug('polling got data %s', data);\n  var callback = function (packet, index, total) {\n    // if its the first message we consider the transport open\n    if ('opening' === self.readyState) {\n      self.onOpen();\n    }\n\n    // if its a close packet, we close the ongoing requests\n    if ('close' === packet.type) {\n      self.onClose();\n      return false;\n    }\n\n    // otherwise bypass onData and handle the message\n    self.onPacket(packet);\n  };\n\n  // decode payload\n  parser.decodePayload(data, this.socket.binaryType, callback);\n\n  // if an event did not trigger closing\n  if ('closed' !== this.readyState) {\n    // if we got data we're not polling\n    this.polling = false;\n    this.emit('pollComplete');\n\n    if ('open' === this.readyState) {\n      this.poll();\n    } else {\n      debug('ignoring poll - transport state \"%s\"', this.readyState);\n    }\n  }\n};\n\n/**\n * For polling, send a close packet.\n *\n * @api private\n */\n\nPolling.prototype.doClose = function () {\n  var self = this;\n\n  function close () {\n    debug('writing close packet');\n    self.write([{ type: 'close' }]);\n  }\n\n  if ('open' === this.readyState) {\n    debug('transport open - closing');\n    close();\n  } else {\n    // in case we're trying to close while\n    // handshaking is in progress (GH-164)\n    debug('transport not open - deferring close');\n    this.once('open', close);\n  }\n};\n\n/**\n * Writes a packets payload.\n *\n * @param {Array} data packets\n * @param {Function} drain callback\n * @api private\n */\n\nPolling.prototype.write = function (packets) {\n  var self = this;\n  this.writable = false;\n  var callbackfn = function () {\n    self.writable = true;\n    self.emit('drain');\n  };\n\n  parser.encodePayload(packets, this.supportsBinary, function (data) {\n    self.doWrite(data, callbackfn);\n  });\n};\n\n/**\n * Generates uri for connection.\n *\n * @api private\n */\n\nPolling.prototype.uri = function () {\n  var query = this.query || {};\n  var schema = this.secure ? 'https' : 'http';\n  var port = '';\n\n  // cache busting is forced\n  if (false !== this.timestampRequests) {\n    query[this.timestampParam] = yeast();\n  }\n\n  if (!this.supportsBinary && !query.sid) {\n    query.b64 = 1;\n  }\n\n  query = parseqs.encode(query);\n\n  // avoid port if default for schema\n  if (this.port && (('https' === schema && Number(this.port) !== 443) ||\n     ('http' === schema && Number(this.port) !== 80))) {\n    port = ':' + this.port;\n  }\n\n  // prepend ? to query\n  if (query.length) {\n    query = '?' + query;\n  }\n\n  var ipv6 = this.hostname.indexOf(':') !== -1;\n  return schema + '://' + (ipv6 ? '[' + this.hostname + ']' : this.hostname) + port + this.path + query;\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-client/lib/transports/polling.js\n// module id = 12\n// module chunks = 0","\n/*\n * Module requirements.\n */\n\nvar isArray = require('isarray');\n\n/**\n * Module exports.\n */\n\nmodule.exports = hasBinary;\n\n/**\n * Checks for binary data.\n *\n * Right now only Buffer and ArrayBuffer are supported..\n *\n * @param {Object} anything\n * @api public\n */\n\nfunction hasBinary(data) {\n\n  function _hasBinary(obj) {\n    if (!obj) return false;\n\n    if ( (global.Buffer && global.Buffer.isBuffer && global.Buffer.isBuffer(obj)) ||\n         (global.ArrayBuffer && obj instanceof ArrayBuffer) ||\n         (global.Blob && obj instanceof Blob) ||\n         (global.File && obj instanceof File)\n        ) {\n      return true;\n    }\n\n    if (isArray(obj)) {\n      for (var i = 0; i < obj.length; i++) {\n          if (_hasBinary(obj[i])) {\n              return true;\n          }\n      }\n    } else if (obj && 'object' == typeof obj) {\n      // see: https://github.com/Automattic/has-binary/pull/4\n      if (obj.toJSON && 'function' == typeof obj.toJSON) {\n        obj = obj.toJSON();\n      }\n\n      for (var key in obj) {\n        if (Object.prototype.hasOwnProperty.call(obj, key) && _hasBinary(obj[key])) {\n          return true;\n        }\n      }\n    }\n\n    return false;\n  }\n\n  return _hasBinary(data);\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/has-binary/index.js\n// module id = 13\n// module chunks = 0","\nvar indexOf = [].indexOf;\n\nmodule.exports = function(arr, obj){\n  if (indexOf) return arr.indexOf(obj);\n  for (var i = 0; i < arr.length; ++i) {\n    if (arr[i] === obj) return i;\n  }\n  return -1;\n};\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/indexof/index.js\n// module id = 14\n// module chunks = 0","module.exports = Array.isArray || function (arr) {\n  return Object.prototype.toString.call(arr) == '[object Array]';\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/isarray/index.js\n// module id = 15\n// module chunks = 0","/**\r\n * Parses an URI\r\n *\r\n * @author Steven Levithan <stevenlevithan.com> (MIT license)\r\n * @api private\r\n */\r\n\r\nvar re = /^(?:(?![^:@]+:[^:@\\/]*@)(http|https|ws|wss):\\/\\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\\/?#]*)(?::(\\d*))?)(((\\/(?:[^?#](?![^?#\\/]*\\.[^?#\\/.]+(?:[?#]|$)))*\\/?)?([^?#\\/]*))(?:\\?([^#]*))?(?:#(.*))?)/;\r\n\r\nvar parts = [\r\n    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'\r\n];\r\n\r\nmodule.exports = function parseuri(str) {\r\n    var src = str,\r\n        b = str.indexOf('['),\r\n        e = str.indexOf(']');\r\n\r\n    if (b != -1 && e != -1) {\r\n        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);\r\n    }\r\n\r\n    var m = re.exec(str || ''),\r\n        uri = {},\r\n        i = 14;\r\n\r\n    while (i--) {\r\n        uri[parts[i]] = m[i] || '';\r\n    }\r\n\r\n    if (b != -1 && e != -1) {\r\n        uri.source = src;\r\n        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');\r\n        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');\r\n        uri.ipv6uri = true;\r\n    }\r\n\r\n    return uri;\r\n};\r\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/parseuri/index.js\n// module id = 16\n// module chunks = 0","\n/**\n * Module dependencies.\n */\n\nvar eio = require('engine.io-client');\nvar Socket = require('./socket');\nvar Emitter = require('component-emitter');\nvar parser = require('socket.io-parser');\nvar on = require('./on');\nvar bind = require('component-bind');\nvar debug = require('debug')('socket.io-client:manager');\nvar indexOf = require('indexof');\nvar Backoff = require('backo2');\n\n/**\n * IE6+ hasOwnProperty\n */\n\nvar has = Object.prototype.hasOwnProperty;\n\n/**\n * Module exports\n */\n\nmodule.exports = Manager;\n\n/**\n * `Manager` constructor.\n *\n * @param {String} engine instance or engine uri/opts\n * @param {Object} options\n * @api public\n */\n\nfunction Manager (uri, opts) {\n  if (!(this instanceof Manager)) return new Manager(uri, opts);\n  if (uri && ('object' === typeof uri)) {\n    opts = uri;\n    uri = undefined;\n  }\n  opts = opts || {};\n\n  opts.path = opts.path || '/socket.io';\n  this.nsps = {};\n  this.subs = [];\n  this.opts = opts;\n  this.reconnection(opts.reconnection !== false);\n  this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);\n  this.reconnectionDelay(opts.reconnectionDelay || 1000);\n  this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);\n  this.randomizationFactor(opts.randomizationFactor || 0.5);\n  this.backoff = new Backoff({\n    min: this.reconnectionDelay(),\n    max: this.reconnectionDelayMax(),\n    jitter: this.randomizationFactor()\n  });\n  this.timeout(null == opts.timeout ? 20000 : opts.timeout);\n  this.readyState = 'closed';\n  this.uri = uri;\n  this.connecting = [];\n  this.lastPing = null;\n  this.encoding = false;\n  this.packetBuffer = [];\n  this.encoder = new parser.Encoder();\n  this.decoder = new parser.Decoder();\n  this.autoConnect = opts.autoConnect !== false;\n  if (this.autoConnect) this.open();\n}\n\n/**\n * Propagate given event to sockets and emit on `this`\n *\n * @api private\n */\n\nManager.prototype.emitAll = function () {\n  this.emit.apply(this, arguments);\n  for (var nsp in this.nsps) {\n    if (has.call(this.nsps, nsp)) {\n      this.nsps[nsp].emit.apply(this.nsps[nsp], arguments);\n    }\n  }\n};\n\n/**\n * Update `socket.id` of all sockets\n *\n * @api private\n */\n\nManager.prototype.updateSocketIds = function () {\n  for (var nsp in this.nsps) {\n    if (has.call(this.nsps, nsp)) {\n      this.nsps[nsp].id = this.engine.id;\n    }\n  }\n};\n\n/**\n * Mix in `Emitter`.\n */\n\nEmitter(Manager.prototype);\n\n/**\n * Sets the `reconnection` config.\n *\n * @param {Boolean} true/false if it should automatically reconnect\n * @return {Manager} self or value\n * @api public\n */\n\nManager.prototype.reconnection = function (v) {\n  if (!arguments.length) return this._reconnection;\n  this._reconnection = !!v;\n  return this;\n};\n\n/**\n * Sets the reconnection attempts config.\n *\n * @param {Number} max reconnection attempts before giving up\n * @return {Manager} self or value\n * @api public\n */\n\nManager.prototype.reconnectionAttempts = function (v) {\n  if (!arguments.length) return this._reconnectionAttempts;\n  this._reconnectionAttempts = v;\n  return this;\n};\n\n/**\n * Sets the delay between reconnections.\n *\n * @param {Number} delay\n * @return {Manager} self or value\n * @api public\n */\n\nManager.prototype.reconnectionDelay = function (v) {\n  if (!arguments.length) return this._reconnectionDelay;\n  this._reconnectionDelay = v;\n  this.backoff && this.backoff.setMin(v);\n  return this;\n};\n\nManager.prototype.randomizationFactor = function (v) {\n  if (!arguments.length) return this._randomizationFactor;\n  this._randomizationFactor = v;\n  this.backoff && this.backoff.setJitter(v);\n  return this;\n};\n\n/**\n * Sets the maximum delay between reconnections.\n *\n * @param {Number} delay\n * @return {Manager} self or value\n * @api public\n */\n\nManager.prototype.reconnectionDelayMax = function (v) {\n  if (!arguments.length) return this._reconnectionDelayMax;\n  this._reconnectionDelayMax = v;\n  this.backoff && this.backoff.setMax(v);\n  return this;\n};\n\n/**\n * Sets the connection timeout. `false` to disable\n *\n * @return {Manager} self or value\n * @api public\n */\n\nManager.prototype.timeout = function (v) {\n  if (!arguments.length) return this._timeout;\n  this._timeout = v;\n  return this;\n};\n\n/**\n * Starts trying to reconnect if reconnection is enabled and we have not\n * started reconnecting yet\n *\n * @api private\n */\n\nManager.prototype.maybeReconnectOnOpen = function () {\n  // Only try to reconnect if it's the first time we're connecting\n  if (!this.reconnecting && this._reconnection && this.backoff.attempts === 0) {\n    // keeps reconnection from firing twice for the same reconnection loop\n    this.reconnect();\n  }\n};\n\n/**\n * Sets the current transport `socket`.\n *\n * @param {Function} optional, callback\n * @return {Manager} self\n * @api public\n */\n\nManager.prototype.open =\nManager.prototype.connect = function (fn, opts) {\n  debug('readyState %s', this.readyState);\n  if (~this.readyState.indexOf('open')) return this;\n\n  debug('opening %s', this.uri);\n  this.engine = eio(this.uri, this.opts);\n  var socket = this.engine;\n  var self = this;\n  this.readyState = 'opening';\n  this.skipReconnect = false;\n\n  // emit `open`\n  var openSub = on(socket, 'open', function () {\n    self.onopen();\n    fn && fn();\n  });\n\n  // emit `connect_error`\n  var errorSub = on(socket, 'error', function (data) {\n    debug('connect_error');\n    self.cleanup();\n    self.readyState = 'closed';\n    self.emitAll('connect_error', data);\n    if (fn) {\n      var err = new Error('Connection error');\n      err.data = data;\n      fn(err);\n    } else {\n      // Only do this if there is no fn to handle the error\n      self.maybeReconnectOnOpen();\n    }\n  });\n\n  // emit `connect_timeout`\n  if (false !== this._timeout) {\n    var timeout = this._timeout;\n    debug('connect attempt will timeout after %d', timeout);\n\n    // set timer\n    var timer = setTimeout(function () {\n      debug('connect attempt timed out after %d', timeout);\n      openSub.destroy();\n      socket.close();\n      socket.emit('error', 'timeout');\n      self.emitAll('connect_timeout', timeout);\n    }, timeout);\n\n    this.subs.push({\n      destroy: function () {\n        clearTimeout(timer);\n      }\n    });\n  }\n\n  this.subs.push(openSub);\n  this.subs.push(errorSub);\n\n  return this;\n};\n\n/**\n * Called upon transport open.\n *\n * @api private\n */\n\nManager.prototype.onopen = function () {\n  debug('open');\n\n  // clear old subs\n  this.cleanup();\n\n  // mark as open\n  this.readyState = 'open';\n  this.emit('open');\n\n  // add new subs\n  var socket = this.engine;\n  this.subs.push(on(socket, 'data', bind(this, 'ondata')));\n  this.subs.push(on(socket, 'ping', bind(this, 'onping')));\n  this.subs.push(on(socket, 'pong', bind(this, 'onpong')));\n  this.subs.push(on(socket, 'error', bind(this, 'onerror')));\n  this.subs.push(on(socket, 'close', bind(this, 'onclose')));\n  this.subs.push(on(this.decoder, 'decoded', bind(this, 'ondecoded')));\n};\n\n/**\n * Called upon a ping.\n *\n * @api private\n */\n\nManager.prototype.onping = function () {\n  this.lastPing = new Date();\n  this.emitAll('ping');\n};\n\n/**\n * Called upon a packet.\n *\n * @api private\n */\n\nManager.prototype.onpong = function () {\n  this.emitAll('pong', new Date() - this.lastPing);\n};\n\n/**\n * Called with data.\n *\n * @api private\n */\n\nManager.prototype.ondata = function (data) {\n  this.decoder.add(data);\n};\n\n/**\n * Called when parser fully decodes a packet.\n *\n * @api private\n */\n\nManager.prototype.ondecoded = function (packet) {\n  this.emit('packet', packet);\n};\n\n/**\n * Called upon socket error.\n *\n * @api private\n */\n\nManager.prototype.onerror = function (err) {\n  debug('error', err);\n  this.emitAll('error', err);\n};\n\n/**\n * Creates a new socket for the given `nsp`.\n *\n * @return {Socket}\n * @api public\n */\n\nManager.prototype.socket = function (nsp, opts) {\n  var socket = this.nsps[nsp];\n  if (!socket) {\n    socket = new Socket(this, nsp, opts);\n    this.nsps[nsp] = socket;\n    var self = this;\n    socket.on('connecting', onConnecting);\n    socket.on('connect', function () {\n      socket.id = self.engine.id;\n    });\n\n    if (this.autoConnect) {\n      // manually call here since connecting evnet is fired before listening\n      onConnecting();\n    }\n  }\n\n  function onConnecting () {\n    if (!~indexOf(self.connecting, socket)) {\n      self.connecting.push(socket);\n    }\n  }\n\n  return socket;\n};\n\n/**\n * Called upon a socket close.\n *\n * @param {Socket} socket\n */\n\nManager.prototype.destroy = function (socket) {\n  var index = indexOf(this.connecting, socket);\n  if (~index) this.connecting.splice(index, 1);\n  if (this.connecting.length) return;\n\n  this.close();\n};\n\n/**\n * Writes a packet.\n *\n * @param {Object} packet\n * @api private\n */\n\nManager.prototype.packet = function (packet) {\n  debug('writing packet %j', packet);\n  var self = this;\n  if (packet.query && packet.type === 0) packet.nsp += '?' + packet.query;\n\n  if (!self.encoding) {\n    // encode, then write to engine with result\n    self.encoding = true;\n    this.encoder.encode(packet, function (encodedPackets) {\n      for (var i = 0; i < encodedPackets.length; i++) {\n        self.engine.write(encodedPackets[i], packet.options);\n      }\n      self.encoding = false;\n      self.processPacketQueue();\n    });\n  } else { // add packet to the queue\n    self.packetBuffer.push(packet);\n  }\n};\n\n/**\n * If packet buffer is non-empty, begins encoding the\n * next packet in line.\n *\n * @api private\n */\n\nManager.prototype.processPacketQueue = function () {\n  if (this.packetBuffer.length > 0 && !this.encoding) {\n    var pack = this.packetBuffer.shift();\n    this.packet(pack);\n  }\n};\n\n/**\n * Clean up transport subscriptions and packet buffer.\n *\n * @api private\n */\n\nManager.prototype.cleanup = function () {\n  debug('cleanup');\n\n  var subsLength = this.subs.length;\n  for (var i = 0; i < subsLength; i++) {\n    var sub = this.subs.shift();\n    sub.destroy();\n  }\n\n  this.packetBuffer = [];\n  this.encoding = false;\n  this.lastPing = null;\n\n  this.decoder.destroy();\n};\n\n/**\n * Close the current socket.\n *\n * @api private\n */\n\nManager.prototype.close =\nManager.prototype.disconnect = function () {\n  debug('disconnect');\n  this.skipReconnect = true;\n  this.reconnecting = false;\n  if ('opening' === this.readyState) {\n    // `onclose` will not fire because\n    // an open event never happened\n    this.cleanup();\n  }\n  this.backoff.reset();\n  this.readyState = 'closed';\n  if (this.engine) this.engine.close();\n};\n\n/**\n * Called upon engine close.\n *\n * @api private\n */\n\nManager.prototype.onclose = function (reason) {\n  debug('onclose');\n\n  this.cleanup();\n  this.backoff.reset();\n  this.readyState = 'closed';\n  this.emit('close', reason);\n\n  if (this._reconnection && !this.skipReconnect) {\n    this.reconnect();\n  }\n};\n\n/**\n * Attempt a reconnection.\n *\n * @api private\n */\n\nManager.prototype.reconnect = function () {\n  if (this.reconnecting || this.skipReconnect) return this;\n\n  var self = this;\n\n  if (this.backoff.attempts >= this._reconnectionAttempts) {\n    debug('reconnect failed');\n    this.backoff.reset();\n    this.emitAll('reconnect_failed');\n    this.reconnecting = false;\n  } else {\n    var delay = this.backoff.duration();\n    debug('will wait %dms before reconnect attempt', delay);\n\n    this.reconnecting = true;\n    var timer = setTimeout(function () {\n      if (self.skipReconnect) return;\n\n      debug('attempting reconnect');\n      self.emitAll('reconnect_attempt', self.backoff.attempts);\n      self.emitAll('reconnecting', self.backoff.attempts);\n\n      // check again for the case socket closed in above events\n      if (self.skipReconnect) return;\n\n      self.open(function (err) {\n        if (err) {\n          debug('reconnect attempt error');\n          self.reconnecting = false;\n          self.reconnect();\n          self.emitAll('reconnect_error', err.data);\n        } else {\n          debug('reconnect success');\n          self.onreconnect();\n        }\n      });\n    }, delay);\n\n    this.subs.push({\n      destroy: function () {\n        clearTimeout(timer);\n      }\n    });\n  }\n};\n\n/**\n * Called upon successful reconnect.\n *\n * @api private\n */\n\nManager.prototype.onreconnect = function () {\n  var attempt = this.backoff.attempts;\n  this.reconnecting = false;\n  this.backoff.reset();\n  this.updateSocketIds();\n  this.emitAll('reconnect', attempt);\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/socket.io-client/lib/manager.js\n// module id = 17\n// module chunks = 0","\n/**\n * Module exports.\n */\n\nmodule.exports = on;\n\n/**\n * Helper for subscriptions.\n *\n * @param {Object|EventEmitter} obj with `Emitter` mixin or `EventEmitter`\n * @param {String} event name\n * @param {Function} callback\n * @api public\n */\n\nfunction on (obj, ev, fn) {\n  obj.on(ev, fn);\n  return {\n    destroy: function () {\n      obj.removeListener(ev, fn);\n    }\n  };\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/socket.io-client/lib/on.js\n// module id = 18\n// module chunks = 0","\n/**\n * Module dependencies.\n */\n\nvar parser = require('socket.io-parser');\nvar Emitter = require('component-emitter');\nvar toArray = require('to-array');\nvar on = require('./on');\nvar bind = require('component-bind');\nvar debug = require('debug')('socket.io-client:socket');\nvar hasBin = require('has-binary');\n\n/**\n * Module exports.\n */\n\nmodule.exports = exports = Socket;\n\n/**\n * Internal events (blacklisted).\n * These events can't be emitted by the user.\n *\n * @api private\n */\n\nvar events = {\n  connect: 1,\n  connect_error: 1,\n  connect_timeout: 1,\n  connecting: 1,\n  disconnect: 1,\n  error: 1,\n  reconnect: 1,\n  reconnect_attempt: 1,\n  reconnect_failed: 1,\n  reconnect_error: 1,\n  reconnecting: 1,\n  ping: 1,\n  pong: 1\n};\n\n/**\n * Shortcut to `Emitter#emit`.\n */\n\nvar emit = Emitter.prototype.emit;\n\n/**\n * `Socket` constructor.\n *\n * @api public\n */\n\nfunction Socket (io, nsp, opts) {\n  this.io = io;\n  this.nsp = nsp;\n  this.json = this; // compat\n  this.ids = 0;\n  this.acks = {};\n  this.receiveBuffer = [];\n  this.sendBuffer = [];\n  this.connected = false;\n  this.disconnected = true;\n  if (opts && opts.query) {\n    this.query = opts.query;\n  }\n  if (this.io.autoConnect) this.open();\n}\n\n/**\n * Mix in `Emitter`.\n */\n\nEmitter(Socket.prototype);\n\n/**\n * Subscribe to open, close and packet events\n *\n * @api private\n */\n\nSocket.prototype.subEvents = function () {\n  if (this.subs) return;\n\n  var io = this.io;\n  this.subs = [\n    on(io, 'open', bind(this, 'onopen')),\n    on(io, 'packet', bind(this, 'onpacket')),\n    on(io, 'close', bind(this, 'onclose'))\n  ];\n};\n\n/**\n * \"Opens\" the socket.\n *\n * @api public\n */\n\nSocket.prototype.open =\nSocket.prototype.connect = function () {\n  if (this.connected) return this;\n\n  this.subEvents();\n  this.io.open(); // ensure open\n  if ('open' === this.io.readyState) this.onopen();\n  this.emit('connecting');\n  return this;\n};\n\n/**\n * Sends a `message` event.\n *\n * @return {Socket} self\n * @api public\n */\n\nSocket.prototype.send = function () {\n  var args = toArray(arguments);\n  args.unshift('message');\n  this.emit.apply(this, args);\n  return this;\n};\n\n/**\n * Override `emit`.\n * If the event is in `events`, it's emitted normally.\n *\n * @param {String} event name\n * @return {Socket} self\n * @api public\n */\n\nSocket.prototype.emit = function (ev) {\n  if (events.hasOwnProperty(ev)) {\n    emit.apply(this, arguments);\n    return this;\n  }\n\n  var args = toArray(arguments);\n  var parserType = parser.EVENT; // default\n  if (hasBin(args)) { parserType = parser.BINARY_EVENT; } // binary\n  var packet = { type: parserType, data: args };\n\n  packet.options = {};\n  packet.options.compress = !this.flags || false !== this.flags.compress;\n\n  // event ack callback\n  if ('function' === typeof args[args.length - 1]) {\n    debug('emitting packet with ack id %d', this.ids);\n    this.acks[this.ids] = args.pop();\n    packet.id = this.ids++;\n  }\n\n  if (this.connected) {\n    this.packet(packet);\n  } else {\n    this.sendBuffer.push(packet);\n  }\n\n  delete this.flags;\n\n  return this;\n};\n\n/**\n * Sends a packet.\n *\n * @param {Object} packet\n * @api private\n */\n\nSocket.prototype.packet = function (packet) {\n  packet.nsp = this.nsp;\n  this.io.packet(packet);\n};\n\n/**\n * Called upon engine `open`.\n *\n * @api private\n */\n\nSocket.prototype.onopen = function () {\n  debug('transport is open - connecting');\n\n  // write connect packet if necessary\n  if ('/' !== this.nsp) {\n    if (this.query) {\n      this.packet({type: parser.CONNECT, query: this.query});\n    } else {\n      this.packet({type: parser.CONNECT});\n    }\n  }\n};\n\n/**\n * Called upon engine `close`.\n *\n * @param {String} reason\n * @api private\n */\n\nSocket.prototype.onclose = function (reason) {\n  debug('close (%s)', reason);\n  this.connected = false;\n  this.disconnected = true;\n  delete this.id;\n  this.emit('disconnect', reason);\n};\n\n/**\n * Called with socket packet.\n *\n * @param {Object} packet\n * @api private\n */\n\nSocket.prototype.onpacket = function (packet) {\n  if (packet.nsp !== this.nsp) return;\n\n  switch (packet.type) {\n    case parser.CONNECT:\n      this.onconnect();\n      break;\n\n    case parser.EVENT:\n      this.onevent(packet);\n      break;\n\n    case parser.BINARY_EVENT:\n      this.onevent(packet);\n      break;\n\n    case parser.ACK:\n      this.onack(packet);\n      break;\n\n    case parser.BINARY_ACK:\n      this.onack(packet);\n      break;\n\n    case parser.DISCONNECT:\n      this.ondisconnect();\n      break;\n\n    case parser.ERROR:\n      this.emit('error', packet.data);\n      break;\n  }\n};\n\n/**\n * Called upon a server event.\n *\n * @param {Object} packet\n * @api private\n */\n\nSocket.prototype.onevent = function (packet) {\n  var args = packet.data || [];\n  debug('emitting event %j', args);\n\n  if (null != packet.id) {\n    debug('attaching ack callback to event');\n    args.push(this.ack(packet.id));\n  }\n\n  if (this.connected) {\n    emit.apply(this, args);\n  } else {\n    this.receiveBuffer.push(args);\n  }\n};\n\n/**\n * Produces an ack callback to emit with an event.\n *\n * @api private\n */\n\nSocket.prototype.ack = function (id) {\n  var self = this;\n  var sent = false;\n  return function () {\n    // prevent double callbacks\n    if (sent) return;\n    sent = true;\n    var args = toArray(arguments);\n    debug('sending ack %j', args);\n\n    var type = hasBin(args) ? parser.BINARY_ACK : parser.ACK;\n    self.packet({\n      type: type,\n      id: id,\n      data: args\n    });\n  };\n};\n\n/**\n * Called upon a server acknowlegement.\n *\n * @param {Object} packet\n * @api private\n */\n\nSocket.prototype.onack = function (packet) {\n  var ack = this.acks[packet.id];\n  if ('function' === typeof ack) {\n    debug('calling ack %s with %j', packet.id, packet.data);\n    ack.apply(this, packet.data);\n    delete this.acks[packet.id];\n  } else {\n    debug('bad ack %s', packet.id);\n  }\n};\n\n/**\n * Called upon server connect.\n *\n * @api private\n */\n\nSocket.prototype.onconnect = function () {\n  this.connected = true;\n  this.disconnected = false;\n  this.emit('connect');\n  this.emitBuffered();\n};\n\n/**\n * Emit buffered events (received and emitted).\n *\n * @api private\n */\n\nSocket.prototype.emitBuffered = function () {\n  var i;\n  for (i = 0; i < this.receiveBuffer.length; i++) {\n    emit.apply(this, this.receiveBuffer[i]);\n  }\n  this.receiveBuffer = [];\n\n  for (i = 0; i < this.sendBuffer.length; i++) {\n    this.packet(this.sendBuffer[i]);\n  }\n  this.sendBuffer = [];\n};\n\n/**\n * Called upon server disconnect.\n *\n * @api private\n */\n\nSocket.prototype.ondisconnect = function () {\n  debug('server disconnect (%s)', this.nsp);\n  this.destroy();\n  this.onclose('io server disconnect');\n};\n\n/**\n * Called upon forced client/server side disconnections,\n * this method ensures the manager stops tracking us and\n * that reconnections don't get triggered for this.\n *\n * @api private.\n */\n\nSocket.prototype.destroy = function () {\n  if (this.subs) {\n    // clean subscriptions to avoid reconnections\n    for (var i = 0; i < this.subs.length; i++) {\n      this.subs[i].destroy();\n    }\n    this.subs = null;\n  }\n\n  this.io.destroy(this);\n};\n\n/**\n * Disconnects the socket manually.\n *\n * @return {Socket} self\n * @api public\n */\n\nSocket.prototype.close =\nSocket.prototype.disconnect = function () {\n  if (this.connected) {\n    debug('performing disconnect (%s)', this.nsp);\n    this.packet({ type: parser.DISCONNECT });\n  }\n\n  // remove socket from pool\n  this.destroy();\n\n  if (this.connected) {\n    // fire events\n    this.onclose('io client disconnect');\n  }\n  return this;\n};\n\n/**\n * Sets the compress flag.\n *\n * @param {Boolean} if `true`, compresses the sending data\n * @return {Socket} self\n * @api public\n */\n\nSocket.prototype.compress = function (compress) {\n  this.flags = this.flags || {};\n  this.flags.compress = compress;\n  return this;\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/socket.io-client/lib/socket.js\n// module id = 19\n// module chunks = 0","\nmodule.exports = isBuf;\n\n/**\n * Returns true if obj is a buffer or an arraybuffer.\n *\n * @api private\n */\n\nfunction isBuf(obj) {\n  return (global.Buffer && global.Buffer.isBuffer(obj)) ||\n         (global.ArrayBuffer && obj instanceof ArrayBuffer);\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/socket.io-parser/is-buffer.js\n// module id = 20\n// module chunks = 0","module.exports = function(module) {\r\n\tif(!module.webpackPolyfill) {\r\n\t\tmodule.deprecate = function() {};\r\n\t\tmodule.paths = [];\r\n\t\t// module.parent = undefined by default\r\n\t\tif(!module.children) module.children = [];\r\n\t\tObject.defineProperty(module, \"loaded\", {\r\n\t\t\tenumerable: true,\r\n\t\t\tconfigurable: false,\r\n\t\t\tget: function() { return module.l; }\r\n\t\t});\r\n\t\tObject.defineProperty(module, \"id\", {\r\n\t\t\tenumerable: true,\r\n\t\t\tconfigurable: false,\r\n\t\t\tget: function() { return module.i; }\r\n\t\t});\r\n\t\tmodule.webpackPolyfill = 1;\r\n\t}\r\n\treturn module;\r\n}\r\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// (webpack)/buildin/module.js\n// module id = 21\n// module chunks = 0","'use strict';\n\nvar alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split('')\n  , length = 64\n  , map = {}\n  , seed = 0\n  , i = 0\n  , prev;\n\n/**\n * Return a string representing the specified number.\n *\n * @param {Number} num The number to convert.\n * @returns {String} The string representation of the number.\n * @api public\n */\nfunction encode(num) {\n  var encoded = '';\n\n  do {\n    encoded = alphabet[num % length] + encoded;\n    num = Math.floor(num / length);\n  } while (num > 0);\n\n  return encoded;\n}\n\n/**\n * Return the integer value specified by the given string.\n *\n * @param {String} str The string to convert.\n * @returns {Number} The integer value represented by the string.\n * @api public\n */\nfunction decode(str) {\n  var decoded = 0;\n\n  for (i = 0; i < str.length; i++) {\n    decoded = decoded * length + map[str.charAt(i)];\n  }\n\n  return decoded;\n}\n\n/**\n * Yeast: A tiny growing id generator.\n *\n * @returns {String} A unique id.\n * @api public\n */\nfunction yeast() {\n  var now = encode(+new Date());\n\n  if (now !== prev) return seed = 0, prev = now;\n  return now +'.'+ encode(seed++);\n}\n\n//\n// Map each character to its index.\n//\nfor (; i < length; i++) map[alphabet[i]] = i;\n\n//\n// Expose the `yeast`, `encode` and `decode` functions.\n//\nyeast.encode = encode;\nyeast.decode = decode;\nmodule.exports = yeast;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/yeast/index.js\n// module id = 22\n// module chunks = 0","import Observer from './Observer'\nimport Emitter from './Emitter'\n\nexport default {\n\n    install(Vue, connection, store){\n\n        if(!connection) throw new Error(\"[Vue-Socket.io] cannot locate connection\")\n\n        let observer = new Observer(connection, store)\n\n        Vue.prototype.$socket = observer.Socket;\n\n        Vue.mixin({\n            beforeCreate(){\n                let sockets = this.$options['sockets']\n\n                this.$options.sockets = new Proxy({}, {\n                    set: (target, key, value) => {\n                        Emitter.addListener(key, value, this)\n                        target[key] = value\n                        return true;\n                    },\n                    deleteProperty: (target, key) => {\n                        Emitter.removeListener(key, this.$options.sockets[key], this)\n                        delete target.key;\n                        return true\n                    }\n                })\n\n                if(sockets){\n                    Object.keys(sockets).forEach((key) => {\n                        this.$options.sockets[key] = sockets[key];\n                    });\n                }\n            },\n            beforeDestroy(){\n                let sockets = this.$options['sockets']\n\n                if(sockets){\n                    Object.keys(sockets).forEach((key) => {\n                        delete this.$options.sockets[key]\n                    });\n                }\n            }\n        })\n\n    }\n\n}\n\n\n\n\n\n// WEBPACK FOOTER //\n// ./src/Main.js","module.exports = after\n\nfunction after(count, callback, err_cb) {\n    var bail = false\n    err_cb = err_cb || noop\n    proxy.count = count\n\n    return (count === 0) ? callback() : proxy\n\n    function proxy(err, result) {\n        if (proxy.count <= 0) {\n            throw new Error('after called too many times')\n        }\n        --proxy.count\n\n        // after first error, rest are passed to err_cb\n        if (err) {\n            bail = true\n            callback(err)\n            // future error callbacks will go to error handler\n            callback = err_cb\n        } else if (proxy.count === 0 && !bail) {\n            callback(null, result)\n        }\n    }\n}\n\nfunction noop() {}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/after/index.js\n// module id = 24\n// module chunks = 0","/**\n * An abstraction for slicing an arraybuffer even when\n * ArrayBuffer.prototype.slice is not supported\n *\n * @api public\n */\n\nmodule.exports = function(arraybuffer, start, end) {\n  var bytes = arraybuffer.byteLength;\n  start = start || 0;\n  end = end || bytes;\n\n  if (arraybuffer.slice) { return arraybuffer.slice(start, end); }\n\n  if (start < 0) { start += bytes; }\n  if (end < 0) { end += bytes; }\n  if (end > bytes) { end = bytes; }\n\n  if (start >= bytes || start >= end || bytes === 0) {\n    return new ArrayBuffer(0);\n  }\n\n  var abv = new Uint8Array(arraybuffer);\n  var result = new Uint8Array(end - start);\n  for (var i = start, ii = 0; i < end; i++, ii++) {\n    result[ii] = abv[i];\n  }\n  return result.buffer;\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/arraybuffer.slice/index.js\n// module id = 25\n// module chunks = 0","import Emitter from './Emitter'\nimport Socket from 'socket.io-client'\n\nexport default class{\n\n    constructor(connection, store) {\n\n        if(typeof connection == 'string'){\n            this.Socket = Socket(connection);\n        }else{\n            this.Socket = connection\n        }\n\n        if(store) this.store = store;\n\n        this.onEvent()\n\n    }\n\n    onEvent(){\n        this.Socket.onevent = (packet) => {\n            Emitter.emit(packet.data[0], packet.data[1]);\n\n            if(this.store) this.commitStore('SOCKET_'+packet.data[0], packet.data[1])\n\n        };\n\n        let _this = this;\n\n        [\"connect\", \"error\", \"disconnect\", \"reconnect\", \"reconnect_attempt\", \"reconnecting\", \"reconnect_error\", \"reconnect_failed\", \"connect_error\", \"connect_timeout\", \"connecting\", \"ping\", \"pong\"]\n            .forEach((value) => {\n                _this.Socket.on(value, (data) => {\n                    Emitter.emit(value, data);\n                    if(_this.store) _this.commitStore('SOCKET_'+value.toUpperCase(), data)\n                })\n            })\n    }\n\n\n    commitStore(type, payload){\n\n        if(type.split('_')[0].toUpperCase() === 'SOCKET'){\n\n            if(this.store._mutations[type])\n                this.store.commit(type, payload)\n\n        }\n\n    }\n\n}\n\n\n\n// WEBPACK FOOTER //\n// ./src/Observer.js","\n/**\n * Expose `Backoff`.\n */\n\nmodule.exports = Backoff;\n\n/**\n * Initialize backoff timer with `opts`.\n *\n * - `min` initial timeout in milliseconds [100]\n * - `max` max timeout [10000]\n * - `jitter` [0]\n * - `factor` [2]\n *\n * @param {Object} opts\n * @api public\n */\n\nfunction Backoff(opts) {\n  opts = opts || {};\n  this.ms = opts.min || 100;\n  this.max = opts.max || 10000;\n  this.factor = opts.factor || 2;\n  this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;\n  this.attempts = 0;\n}\n\n/**\n * Return the backoff duration.\n *\n * @return {Number}\n * @api public\n */\n\nBackoff.prototype.duration = function(){\n  var ms = this.ms * Math.pow(this.factor, this.attempts++);\n  if (this.jitter) {\n    var rand =  Math.random();\n    var deviation = Math.floor(rand * this.jitter * ms);\n    ms = (Math.floor(rand * 10) & 1) == 0  ? ms - deviation : ms + deviation;\n  }\n  return Math.min(ms, this.max) | 0;\n};\n\n/**\n * Reset the number of attempts.\n *\n * @api public\n */\n\nBackoff.prototype.reset = function(){\n  this.attempts = 0;\n};\n\n/**\n * Set the minimum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMin = function(min){\n  this.ms = min;\n};\n\n/**\n * Set the maximum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMax = function(max){\n  this.max = max;\n};\n\n/**\n * Set the jitter\n *\n * @api public\n */\n\nBackoff.prototype.setJitter = function(jitter){\n  this.jitter = jitter;\n};\n\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/backo2/index.js\n// module id = 27\n// module chunks = 0","/*\n * base64-arraybuffer\n * https://github.com/niklasvh/base64-arraybuffer\n *\n * Copyright (c) 2012 Niklas von Hertzen\n * Licensed under the MIT license.\n */\n(function(){\n  \"use strict\";\n\n  var chars = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n  // Use a lookup table to find the index.\n  var lookup = new Uint8Array(256);\n  for (var i = 0; i < chars.length; i++) {\n    lookup[chars.charCodeAt(i)] = i;\n  }\n\n  exports.encode = function(arraybuffer) {\n    var bytes = new Uint8Array(arraybuffer),\n    i, len = bytes.length, base64 = \"\";\n\n    for (i = 0; i < len; i+=3) {\n      base64 += chars[bytes[i] >> 2];\n      base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];\n      base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];\n      base64 += chars[bytes[i + 2] & 63];\n    }\n\n    if ((len % 3) === 2) {\n      base64 = base64.substring(0, base64.length - 1) + \"=\";\n    } else if (len % 3 === 1) {\n      base64 = base64.substring(0, base64.length - 2) + \"==\";\n    }\n\n    return base64;\n  };\n\n  exports.decode =  function(base64) {\n    var bufferLength = base64.length * 0.75,\n    len = base64.length, i, p = 0,\n    encoded1, encoded2, encoded3, encoded4;\n\n    if (base64[base64.length - 1] === \"=\") {\n      bufferLength--;\n      if (base64[base64.length - 2] === \"=\") {\n        bufferLength--;\n      }\n    }\n\n    var arraybuffer = new ArrayBuffer(bufferLength),\n    bytes = new Uint8Array(arraybuffer);\n\n    for (i = 0; i < len; i+=4) {\n      encoded1 = lookup[base64.charCodeAt(i)];\n      encoded2 = lookup[base64.charCodeAt(i+1)];\n      encoded3 = lookup[base64.charCodeAt(i+2)];\n      encoded4 = lookup[base64.charCodeAt(i+3)];\n\n      bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);\n      bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);\n      bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);\n    }\n\n    return arraybuffer;\n  };\n})();\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/base64-arraybuffer/lib/base64-arraybuffer.js\n// module id = 28\n// module chunks = 0","/**\n * Create a blob builder even when vendor prefixes exist\n */\n\nvar BlobBuilder = global.BlobBuilder\n  || global.WebKitBlobBuilder\n  || global.MSBlobBuilder\n  || global.MozBlobBuilder;\n\n/**\n * Check if Blob constructor is supported\n */\n\nvar blobSupported = (function() {\n  try {\n    var a = new Blob(['hi']);\n    return a.size === 2;\n  } catch(e) {\n    return false;\n  }\n})();\n\n/**\n * Check if Blob constructor supports ArrayBufferViews\n * Fails in Safari 6, so we need to map to ArrayBuffers there.\n */\n\nvar blobSupportsArrayBufferView = blobSupported && (function() {\n  try {\n    var b = new Blob([new Uint8Array([1,2])]);\n    return b.size === 2;\n  } catch(e) {\n    return false;\n  }\n})();\n\n/**\n * Check if BlobBuilder is supported\n */\n\nvar blobBuilderSupported = BlobBuilder\n  && BlobBuilder.prototype.append\n  && BlobBuilder.prototype.getBlob;\n\n/**\n * Helper function that maps ArrayBufferViews to ArrayBuffers\n * Used by BlobBuilder constructor and old browsers that didn't\n * support it in the Blob constructor.\n */\n\nfunction mapArrayBufferViews(ary) {\n  for (var i = 0; i < ary.length; i++) {\n    var chunk = ary[i];\n    if (chunk.buffer instanceof ArrayBuffer) {\n      var buf = chunk.buffer;\n\n      // if this is a subarray, make a copy so we only\n      // include the subarray region from the underlying buffer\n      if (chunk.byteLength !== buf.byteLength) {\n        var copy = new Uint8Array(chunk.byteLength);\n        copy.set(new Uint8Array(buf, chunk.byteOffset, chunk.byteLength));\n        buf = copy.buffer;\n      }\n\n      ary[i] = buf;\n    }\n  }\n}\n\nfunction BlobBuilderConstructor(ary, options) {\n  options = options || {};\n\n  var bb = new BlobBuilder();\n  mapArrayBufferViews(ary);\n\n  for (var i = 0; i < ary.length; i++) {\n    bb.append(ary[i]);\n  }\n\n  return (options.type) ? bb.getBlob(options.type) : bb.getBlob();\n};\n\nfunction BlobConstructor(ary, options) {\n  mapArrayBufferViews(ary);\n  return new Blob(ary, options || {});\n};\n\nmodule.exports = (function() {\n  if (blobSupported) {\n    return blobSupportsArrayBufferView ? global.Blob : BlobConstructor;\n  } else if (blobBuilderSupported) {\n    return BlobBuilderConstructor;\n  } else {\n    return undefined;\n  }\n})();\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/blob/index.js\n// module id = 29\n// module chunks = 0","\n/**\n * This is the common logic for both the Node.js and web browser\n * implementations of `debug()`.\n *\n * Expose `debug()` as the module.\n */\n\nexports = module.exports = debug.debug = debug;\nexports.coerce = coerce;\nexports.disable = disable;\nexports.enable = enable;\nexports.enabled = enabled;\nexports.humanize = require('ms');\n\n/**\n * The currently active debug mode names, and names to skip.\n */\n\nexports.names = [];\nexports.skips = [];\n\n/**\n * Map of special \"%n\" handling functions, for the debug \"format\" argument.\n *\n * Valid key names are a single, lowercased letter, i.e. \"n\".\n */\n\nexports.formatters = {};\n\n/**\n * Previously assigned color.\n */\n\nvar prevColor = 0;\n\n/**\n * Previous log timestamp.\n */\n\nvar prevTime;\n\n/**\n * Select a color.\n *\n * @return {Number}\n * @api private\n */\n\nfunction selectColor() {\n  return exports.colors[prevColor++ % exports.colors.length];\n}\n\n/**\n * Create a debugger with the given `namespace`.\n *\n * @param {String} namespace\n * @return {Function}\n * @api public\n */\n\nfunction debug(namespace) {\n\n  // define the `disabled` version\n  function disabled() {\n  }\n  disabled.enabled = false;\n\n  // define the `enabled` version\n  function enabled() {\n\n    var self = enabled;\n\n    // set `diff` timestamp\n    var curr = +new Date();\n    var ms = curr - (prevTime || curr);\n    self.diff = ms;\n    self.prev = prevTime;\n    self.curr = curr;\n    prevTime = curr;\n\n    // add the `color` if not set\n    if (null == self.useColors) self.useColors = exports.useColors();\n    if (null == self.color && self.useColors) self.color = selectColor();\n\n    var args = new Array(arguments.length);\n    for (var i = 0; i < args.length; i++) {\n      args[i] = arguments[i];\n    }\n\n    args[0] = exports.coerce(args[0]);\n\n    if ('string' !== typeof args[0]) {\n      // anything else let's inspect with %o\n      args = ['%o'].concat(args);\n    }\n\n    // apply any `formatters` transformations\n    var index = 0;\n    args[0] = args[0].replace(/%([a-z%])/g, function(match, format) {\n      // if we encounter an escaped % then don't increase the array index\n      if (match === '%%') return match;\n      index++;\n      var formatter = exports.formatters[format];\n      if ('function' === typeof formatter) {\n        var val = args[index];\n        match = formatter.call(self, val);\n\n        // now we need to remove `args[index]` since it's inlined in the `format`\n        args.splice(index, 1);\n        index--;\n      }\n      return match;\n    });\n\n    // apply env-specific formatting\n    args = exports.formatArgs.apply(self, args);\n\n    var logFn = enabled.log || exports.log || console.log.bind(console);\n    logFn.apply(self, args);\n  }\n  enabled.enabled = true;\n\n  var fn = exports.enabled(namespace) ? enabled : disabled;\n\n  fn.namespace = namespace;\n\n  return fn;\n}\n\n/**\n * Enables a debug mode by namespaces. This can include modes\n * separated by a colon and wildcards.\n *\n * @param {String} namespaces\n * @api public\n */\n\nfunction enable(namespaces) {\n  exports.save(namespaces);\n\n  var split = (namespaces || '').split(/[\\s,]+/);\n  var len = split.length;\n\n  for (var i = 0; i < len; i++) {\n    if (!split[i]) continue; // ignore empty strings\n    namespaces = split[i].replace(/[\\\\^$+?.()|[\\]{}]/g, '\\\\$&').replace(/\\*/g, '.*?');\n    if (namespaces[0] === '-') {\n      exports.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));\n    } else {\n      exports.names.push(new RegExp('^' + namespaces + '$'));\n    }\n  }\n}\n\n/**\n * Disable debug output.\n *\n * @api public\n */\n\nfunction disable() {\n  exports.enable('');\n}\n\n/**\n * Returns true if the given mode name is enabled, false otherwise.\n *\n * @param {String} name\n * @return {Boolean}\n * @api public\n */\n\nfunction enabled(name) {\n  var i, len;\n  for (i = 0, len = exports.skips.length; i < len; i++) {\n    if (exports.skips[i].test(name)) {\n      return false;\n    }\n  }\n  for (i = 0, len = exports.names.length; i < len; i++) {\n    if (exports.names[i].test(name)) {\n      return true;\n    }\n  }\n  return false;\n}\n\n/**\n * Coerce `val`.\n *\n * @param {Mixed} val\n * @return {Mixed}\n * @api private\n */\n\nfunction coerce(val) {\n  if (val instanceof Error) return val.stack || val.message;\n  return val;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/debug/debug.js\n// module id = 30\n// module chunks = 0","\nmodule.exports = require('./lib/index');\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-client/index.js\n// module id = 31\n// module chunks = 0","\nmodule.exports = require('./socket');\n\n/**\n * Exports parser\n *\n * @api public\n *\n */\nmodule.exports.parser = require('engine.io-parser');\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-client/lib/index.js\n// module id = 32\n// module chunks = 0","/**\n * Module dependencies.\n */\n\nvar transports = require('./transports/index');\nvar Emitter = require('component-emitter');\nvar debug = require('debug')('engine.io-client:socket');\nvar index = require('indexof');\nvar parser = require('engine.io-parser');\nvar parseuri = require('parseuri');\nvar parsejson = require('parsejson');\nvar parseqs = require('parseqs');\n\n/**\n * Module exports.\n */\n\nmodule.exports = Socket;\n\n/**\n * Socket constructor.\n *\n * @param {String|Object} uri or options\n * @param {Object} options\n * @api public\n */\n\nfunction Socket (uri, opts) {\n  if (!(this instanceof Socket)) return new Socket(uri, opts);\n\n  opts = opts || {};\n\n  if (uri && 'object' === typeof uri) {\n    opts = uri;\n    uri = null;\n  }\n\n  if (uri) {\n    uri = parseuri(uri);\n    opts.hostname = uri.host;\n    opts.secure = uri.protocol === 'https' || uri.protocol === 'wss';\n    opts.port = uri.port;\n    if (uri.query) opts.query = uri.query;\n  } else if (opts.host) {\n    opts.hostname = parseuri(opts.host).host;\n  }\n\n  this.secure = null != opts.secure ? opts.secure\n    : (global.location && 'https:' === location.protocol);\n\n  if (opts.hostname && !opts.port) {\n    // if no port is specified manually, use the protocol default\n    opts.port = this.secure ? '443' : '80';\n  }\n\n  this.agent = opts.agent || false;\n  this.hostname = opts.hostname ||\n    (global.location ? location.hostname : 'localhost');\n  this.port = opts.port || (global.location && location.port\n      ? location.port\n      : (this.secure ? 443 : 80));\n  this.query = opts.query || {};\n  if ('string' === typeof this.query) this.query = parseqs.decode(this.query);\n  this.upgrade = false !== opts.upgrade;\n  this.path = (opts.path || '/engine.io').replace(/\\/$/, '') + '/';\n  this.forceJSONP = !!opts.forceJSONP;\n  this.jsonp = false !== opts.jsonp;\n  this.forceBase64 = !!opts.forceBase64;\n  this.enablesXDR = !!opts.enablesXDR;\n  this.timestampParam = opts.timestampParam || 't';\n  this.timestampRequests = opts.timestampRequests;\n  this.transports = opts.transports || ['polling', 'websocket'];\n  this.readyState = '';\n  this.writeBuffer = [];\n  this.prevBufferLen = 0;\n  this.policyPort = opts.policyPort || 843;\n  this.rememberUpgrade = opts.rememberUpgrade || false;\n  this.binaryType = null;\n  this.onlyBinaryUpgrades = opts.onlyBinaryUpgrades;\n  this.perMessageDeflate = false !== opts.perMessageDeflate ? (opts.perMessageDeflate || {}) : false;\n\n  if (true === this.perMessageDeflate) this.perMessageDeflate = {};\n  if (this.perMessageDeflate && null == this.perMessageDeflate.threshold) {\n    this.perMessageDeflate.threshold = 1024;\n  }\n\n  // SSL options for Node.js client\n  this.pfx = opts.pfx || null;\n  this.key = opts.key || null;\n  this.passphrase = opts.passphrase || null;\n  this.cert = opts.cert || null;\n  this.ca = opts.ca || null;\n  this.ciphers = opts.ciphers || null;\n  this.rejectUnauthorized = opts.rejectUnauthorized === undefined ? null : opts.rejectUnauthorized;\n  this.forceNode = !!opts.forceNode;\n\n  // other options for Node.js client\n  var freeGlobal = typeof global === 'object' && global;\n  if (freeGlobal.global === freeGlobal) {\n    if (opts.extraHeaders && Object.keys(opts.extraHeaders).length > 0) {\n      this.extraHeaders = opts.extraHeaders;\n    }\n\n    if (opts.localAddress) {\n      this.localAddress = opts.localAddress;\n    }\n  }\n\n  // set on handshake\n  this.id = null;\n  this.upgrades = null;\n  this.pingInterval = null;\n  this.pingTimeout = null;\n\n  // set on heartbeat\n  this.pingIntervalTimer = null;\n  this.pingTimeoutTimer = null;\n\n  this.open();\n}\n\nSocket.priorWebsocketSuccess = false;\n\n/**\n * Mix in `Emitter`.\n */\n\nEmitter(Socket.prototype);\n\n/**\n * Protocol version.\n *\n * @api public\n */\n\nSocket.protocol = parser.protocol; // this is an int\n\n/**\n * Expose deps for legacy compatibility\n * and standalone browser access.\n */\n\nSocket.Socket = Socket;\nSocket.Transport = require('./transport');\nSocket.transports = require('./transports/index');\nSocket.parser = require('engine.io-parser');\n\n/**\n * Creates transport of the given type.\n *\n * @param {String} transport name\n * @return {Transport}\n * @api private\n */\n\nSocket.prototype.createTransport = function (name) {\n  debug('creating transport \"%s\"', name);\n  var query = clone(this.query);\n\n  // append engine.io protocol identifier\n  query.EIO = parser.protocol;\n\n  // transport name\n  query.transport = name;\n\n  // session id if we already have one\n  if (this.id) query.sid = this.id;\n\n  var transport = new transports[name]({\n    agent: this.agent,\n    hostname: this.hostname,\n    port: this.port,\n    secure: this.secure,\n    path: this.path,\n    query: query,\n    forceJSONP: this.forceJSONP,\n    jsonp: this.jsonp,\n    forceBase64: this.forceBase64,\n    enablesXDR: this.enablesXDR,\n    timestampRequests: this.timestampRequests,\n    timestampParam: this.timestampParam,\n    policyPort: this.policyPort,\n    socket: this,\n    pfx: this.pfx,\n    key: this.key,\n    passphrase: this.passphrase,\n    cert: this.cert,\n    ca: this.ca,\n    ciphers: this.ciphers,\n    rejectUnauthorized: this.rejectUnauthorized,\n    perMessageDeflate: this.perMessageDeflate,\n    extraHeaders: this.extraHeaders,\n    forceNode: this.forceNode,\n    localAddress: this.localAddress\n  });\n\n  return transport;\n};\n\nfunction clone (obj) {\n  var o = {};\n  for (var i in obj) {\n    if (obj.hasOwnProperty(i)) {\n      o[i] = obj[i];\n    }\n  }\n  return o;\n}\n\n/**\n * Initializes transport to use and starts probe.\n *\n * @api private\n */\nSocket.prototype.open = function () {\n  var transport;\n  if (this.rememberUpgrade && Socket.priorWebsocketSuccess && this.transports.indexOf('websocket') !== -1) {\n    transport = 'websocket';\n  } else if (0 === this.transports.length) {\n    // Emit error on next tick so it can be listened to\n    var self = this;\n    setTimeout(function () {\n      self.emit('error', 'No transports available');\n    }, 0);\n    return;\n  } else {\n    transport = this.transports[0];\n  }\n  this.readyState = 'opening';\n\n  // Retry with the next transport if the transport is disabled (jsonp: false)\n  try {\n    transport = this.createTransport(transport);\n  } catch (e) {\n    this.transports.shift();\n    this.open();\n    return;\n  }\n\n  transport.open();\n  this.setTransport(transport);\n};\n\n/**\n * Sets the current transport. Disables the existing one (if any).\n *\n * @api private\n */\n\nSocket.prototype.setTransport = function (transport) {\n  debug('setting transport %s', transport.name);\n  var self = this;\n\n  if (this.transport) {\n    debug('clearing existing transport %s', this.transport.name);\n    this.transport.removeAllListeners();\n  }\n\n  // set up transport\n  this.transport = transport;\n\n  // set up transport listeners\n  transport\n  .on('drain', function () {\n    self.onDrain();\n  })\n  .on('packet', function (packet) {\n    self.onPacket(packet);\n  })\n  .on('error', function (e) {\n    self.onError(e);\n  })\n  .on('close', function () {\n    self.onClose('transport close');\n  });\n};\n\n/**\n * Probes a transport.\n *\n * @param {String} transport name\n * @api private\n */\n\nSocket.prototype.probe = function (name) {\n  debug('probing transport \"%s\"', name);\n  var transport = this.createTransport(name, { probe: 1 });\n  var failed = false;\n  var self = this;\n\n  Socket.priorWebsocketSuccess = false;\n\n  function onTransportOpen () {\n    if (self.onlyBinaryUpgrades) {\n      var upgradeLosesBinary = !this.supportsBinary && self.transport.supportsBinary;\n      failed = failed || upgradeLosesBinary;\n    }\n    if (failed) return;\n\n    debug('probe transport \"%s\" opened', name);\n    transport.send([{ type: 'ping', data: 'probe' }]);\n    transport.once('packet', function (msg) {\n      if (failed) return;\n      if ('pong' === msg.type && 'probe' === msg.data) {\n        debug('probe transport \"%s\" pong', name);\n        self.upgrading = true;\n        self.emit('upgrading', transport);\n        if (!transport) return;\n        Socket.priorWebsocketSuccess = 'websocket' === transport.name;\n\n        debug('pausing current transport \"%s\"', self.transport.name);\n        self.transport.pause(function () {\n          if (failed) return;\n          if ('closed' === self.readyState) return;\n          debug('changing transport and sending upgrade packet');\n\n          cleanup();\n\n          self.setTransport(transport);\n          transport.send([{ type: 'upgrade' }]);\n          self.emit('upgrade', transport);\n          transport = null;\n          self.upgrading = false;\n          self.flush();\n        });\n      } else {\n        debug('probe transport \"%s\" failed', name);\n        var err = new Error('probe error');\n        err.transport = transport.name;\n        self.emit('upgradeError', err);\n      }\n    });\n  }\n\n  function freezeTransport () {\n    if (failed) return;\n\n    // Any callback called by transport should be ignored since now\n    failed = true;\n\n    cleanup();\n\n    transport.close();\n    transport = null;\n  }\n\n  // Handle any error that happens while probing\n  function onerror (err) {\n    var error = new Error('probe error: ' + err);\n    error.transport = transport.name;\n\n    freezeTransport();\n\n    debug('probe transport \"%s\" failed because of error: %s', name, err);\n\n    self.emit('upgradeError', error);\n  }\n\n  function onTransportClose () {\n    onerror('transport closed');\n  }\n\n  // When the socket is closed while we're probing\n  function onclose () {\n    onerror('socket closed');\n  }\n\n  // When the socket is upgraded while we're probing\n  function onupgrade (to) {\n    if (transport && to.name !== transport.name) {\n      debug('\"%s\" works - aborting \"%s\"', to.name, transport.name);\n      freezeTransport();\n    }\n  }\n\n  // Remove all listeners on the transport and on self\n  function cleanup () {\n    transport.removeListener('open', onTransportOpen);\n    transport.removeListener('error', onerror);\n    transport.removeListener('close', onTransportClose);\n    self.removeListener('close', onclose);\n    self.removeListener('upgrading', onupgrade);\n  }\n\n  transport.once('open', onTransportOpen);\n  transport.once('error', onerror);\n  transport.once('close', onTransportClose);\n\n  this.once('close', onclose);\n  this.once('upgrading', onupgrade);\n\n  transport.open();\n};\n\n/**\n * Called when connection is deemed open.\n *\n * @api public\n */\n\nSocket.prototype.onOpen = function () {\n  debug('socket open');\n  this.readyState = 'open';\n  Socket.priorWebsocketSuccess = 'websocket' === this.transport.name;\n  this.emit('open');\n  this.flush();\n\n  // we check for `readyState` in case an `open`\n  // listener already closed the socket\n  if ('open' === this.readyState && this.upgrade && this.transport.pause) {\n    debug('starting upgrade probes');\n    for (var i = 0, l = this.upgrades.length; i < l; i++) {\n      this.probe(this.upgrades[i]);\n    }\n  }\n};\n\n/**\n * Handles a packet.\n *\n * @api private\n */\n\nSocket.prototype.onPacket = function (packet) {\n  if ('opening' === this.readyState || 'open' === this.readyState ||\n      'closing' === this.readyState) {\n    debug('socket receive: type \"%s\", data \"%s\"', packet.type, packet.data);\n\n    this.emit('packet', packet);\n\n    // Socket is live - any packet counts\n    this.emit('heartbeat');\n\n    switch (packet.type) {\n      case 'open':\n        this.onHandshake(parsejson(packet.data));\n        break;\n\n      case 'pong':\n        this.setPing();\n        this.emit('pong');\n        break;\n\n      case 'error':\n        var err = new Error('server error');\n        err.code = packet.data;\n        this.onError(err);\n        break;\n\n      case 'message':\n        this.emit('data', packet.data);\n        this.emit('message', packet.data);\n        break;\n    }\n  } else {\n    debug('packet received with socket readyState \"%s\"', this.readyState);\n  }\n};\n\n/**\n * Called upon handshake completion.\n *\n * @param {Object} handshake obj\n * @api private\n */\n\nSocket.prototype.onHandshake = function (data) {\n  this.emit('handshake', data);\n  this.id = data.sid;\n  this.transport.query.sid = data.sid;\n  this.upgrades = this.filterUpgrades(data.upgrades);\n  this.pingInterval = data.pingInterval;\n  this.pingTimeout = data.pingTimeout;\n  this.onOpen();\n  // In case open handler closes socket\n  if ('closed' === this.readyState) return;\n  this.setPing();\n\n  // Prolong liveness of socket on heartbeat\n  this.removeListener('heartbeat', this.onHeartbeat);\n  this.on('heartbeat', this.onHeartbeat);\n};\n\n/**\n * Resets ping timeout.\n *\n * @api private\n */\n\nSocket.prototype.onHeartbeat = function (timeout) {\n  clearTimeout(this.pingTimeoutTimer);\n  var self = this;\n  self.pingTimeoutTimer = setTimeout(function () {\n    if ('closed' === self.readyState) return;\n    self.onClose('ping timeout');\n  }, timeout || (self.pingInterval + self.pingTimeout));\n};\n\n/**\n * Pings server every `this.pingInterval` and expects response\n * within `this.pingTimeout` or closes connection.\n *\n * @api private\n */\n\nSocket.prototype.setPing = function () {\n  var self = this;\n  clearTimeout(self.pingIntervalTimer);\n  self.pingIntervalTimer = setTimeout(function () {\n    debug('writing ping packet - expecting pong within %sms', self.pingTimeout);\n    self.ping();\n    self.onHeartbeat(self.pingTimeout);\n  }, self.pingInterval);\n};\n\n/**\n* Sends a ping packet.\n*\n* @api private\n*/\n\nSocket.prototype.ping = function () {\n  var self = this;\n  this.sendPacket('ping', function () {\n    self.emit('ping');\n  });\n};\n\n/**\n * Called on `drain` event\n *\n * @api private\n */\n\nSocket.prototype.onDrain = function () {\n  this.writeBuffer.splice(0, this.prevBufferLen);\n\n  // setting prevBufferLen = 0 is very important\n  // for example, when upgrading, upgrade packet is sent over,\n  // and a nonzero prevBufferLen could cause problems on `drain`\n  this.prevBufferLen = 0;\n\n  if (0 === this.writeBuffer.length) {\n    this.emit('drain');\n  } else {\n    this.flush();\n  }\n};\n\n/**\n * Flush write buffers.\n *\n * @api private\n */\n\nSocket.prototype.flush = function () {\n  if ('closed' !== this.readyState && this.transport.writable &&\n    !this.upgrading && this.writeBuffer.length) {\n    debug('flushing %d packets in socket', this.writeBuffer.length);\n    this.transport.send(this.writeBuffer);\n    // keep track of current length of writeBuffer\n    // splice writeBuffer and callbackBuffer on `drain`\n    this.prevBufferLen = this.writeBuffer.length;\n    this.emit('flush');\n  }\n};\n\n/**\n * Sends a message.\n *\n * @param {String} message.\n * @param {Function} callback function.\n * @param {Object} options.\n * @return {Socket} for chaining.\n * @api public\n */\n\nSocket.prototype.write =\nSocket.prototype.send = function (msg, options, fn) {\n  this.sendPacket('message', msg, options, fn);\n  return this;\n};\n\n/**\n * Sends a packet.\n *\n * @param {String} packet type.\n * @param {String} data.\n * @param {Object} options.\n * @param {Function} callback function.\n * @api private\n */\n\nSocket.prototype.sendPacket = function (type, data, options, fn) {\n  if ('function' === typeof data) {\n    fn = data;\n    data = undefined;\n  }\n\n  if ('function' === typeof options) {\n    fn = options;\n    options = null;\n  }\n\n  if ('closing' === this.readyState || 'closed' === this.readyState) {\n    return;\n  }\n\n  options = options || {};\n  options.compress = false !== options.compress;\n\n  var packet = {\n    type: type,\n    data: data,\n    options: options\n  };\n  this.emit('packetCreate', packet);\n  this.writeBuffer.push(packet);\n  if (fn) this.once('flush', fn);\n  this.flush();\n};\n\n/**\n * Closes the connection.\n *\n * @api private\n */\n\nSocket.prototype.close = function () {\n  if ('opening' === this.readyState || 'open' === this.readyState) {\n    this.readyState = 'closing';\n\n    var self = this;\n\n    if (this.writeBuffer.length) {\n      this.once('drain', function () {\n        if (this.upgrading) {\n          waitForUpgrade();\n        } else {\n          close();\n        }\n      });\n    } else if (this.upgrading) {\n      waitForUpgrade();\n    } else {\n      close();\n    }\n  }\n\n  function close () {\n    self.onClose('forced close');\n    debug('socket closing - telling transport to close');\n    self.transport.close();\n  }\n\n  function cleanupAndClose () {\n    self.removeListener('upgrade', cleanupAndClose);\n    self.removeListener('upgradeError', cleanupAndClose);\n    close();\n  }\n\n  function waitForUpgrade () {\n    // wait for upgrade to finish since we can't send packets while pausing a transport\n    self.once('upgrade', cleanupAndClose);\n    self.once('upgradeError', cleanupAndClose);\n  }\n\n  return this;\n};\n\n/**\n * Called upon transport error\n *\n * @api private\n */\n\nSocket.prototype.onError = function (err) {\n  debug('socket error %j', err);\n  Socket.priorWebsocketSuccess = false;\n  this.emit('error', err);\n  this.onClose('transport error', err);\n};\n\n/**\n * Called upon transport close.\n *\n * @api private\n */\n\nSocket.prototype.onClose = function (reason, desc) {\n  if ('opening' === this.readyState || 'open' === this.readyState || 'closing' === this.readyState) {\n    debug('socket close with reason: \"%s\"', reason);\n    var self = this;\n\n    // clear timers\n    clearTimeout(this.pingIntervalTimer);\n    clearTimeout(this.pingTimeoutTimer);\n\n    // stop event from firing again for transport\n    this.transport.removeAllListeners('close');\n\n    // ensure transport won't stay open\n    this.transport.close();\n\n    // ignore further transport communication\n    this.transport.removeAllListeners();\n\n    // set ready state\n    this.readyState = 'closed';\n\n    // clear session id\n    this.id = null;\n\n    // emit close event\n    this.emit('close', reason, desc);\n\n    // clean buffers after, so users can still\n    // grab the buffers on `close` event\n    self.writeBuffer = [];\n    self.prevBufferLen = 0;\n  }\n};\n\n/**\n * Filters upgrades, returning only those matching client transports.\n *\n * @param {Array} server upgrades\n * @api private\n *\n */\n\nSocket.prototype.filterUpgrades = function (upgrades) {\n  var filteredUpgrades = [];\n  for (var i = 0, j = upgrades.length; i < j; i++) {\n    if (~index(this.transports, upgrades[i])) filteredUpgrades.push(upgrades[i]);\n  }\n  return filteredUpgrades;\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-client/lib/socket.js\n// module id = 33\n// module chunks = 0","\n/**\n * Module requirements.\n */\n\nvar Polling = require('./polling');\nvar inherit = require('component-inherit');\n\n/**\n * Module exports.\n */\n\nmodule.exports = JSONPPolling;\n\n/**\n * Cached regular expressions.\n */\n\nvar rNewline = /\\n/g;\nvar rEscapedNewline = /\\\\n/g;\n\n/**\n * Global JSONP callbacks.\n */\n\nvar callbacks;\n\n/**\n * Noop.\n */\n\nfunction empty () { }\n\n/**\n * JSONP Polling constructor.\n *\n * @param {Object} opts.\n * @api public\n */\n\nfunction JSONPPolling (opts) {\n  Polling.call(this, opts);\n\n  this.query = this.query || {};\n\n  // define global callbacks array if not present\n  // we do this here (lazily) to avoid unneeded global pollution\n  if (!callbacks) {\n    // we need to consider multiple engines in the same page\n    if (!global.___eio) global.___eio = [];\n    callbacks = global.___eio;\n  }\n\n  // callback identifier\n  this.index = callbacks.length;\n\n  // add callback to jsonp global\n  var self = this;\n  callbacks.push(function (msg) {\n    self.onData(msg);\n  });\n\n  // append to query string\n  this.query.j = this.index;\n\n  // prevent spurious errors from being emitted when the window is unloaded\n  if (global.document && global.addEventListener) {\n    global.addEventListener('beforeunload', function () {\n      if (self.script) self.script.onerror = empty;\n    }, false);\n  }\n}\n\n/**\n * Inherits from Polling.\n */\n\ninherit(JSONPPolling, Polling);\n\n/*\n * JSONP only supports binary as base64 encoded strings\n */\n\nJSONPPolling.prototype.supportsBinary = false;\n\n/**\n * Closes the socket.\n *\n * @api private\n */\n\nJSONPPolling.prototype.doClose = function () {\n  if (this.script) {\n    this.script.parentNode.removeChild(this.script);\n    this.script = null;\n  }\n\n  if (this.form) {\n    this.form.parentNode.removeChild(this.form);\n    this.form = null;\n    this.iframe = null;\n  }\n\n  Polling.prototype.doClose.call(this);\n};\n\n/**\n * Starts a poll cycle.\n *\n * @api private\n */\n\nJSONPPolling.prototype.doPoll = function () {\n  var self = this;\n  var script = document.createElement('script');\n\n  if (this.script) {\n    this.script.parentNode.removeChild(this.script);\n    this.script = null;\n  }\n\n  script.async = true;\n  script.src = this.uri();\n  script.onerror = function (e) {\n    self.onError('jsonp poll error', e);\n  };\n\n  var insertAt = document.getElementsByTagName('script')[0];\n  if (insertAt) {\n    insertAt.parentNode.insertBefore(script, insertAt);\n  } else {\n    (document.head || document.body).appendChild(script);\n  }\n  this.script = script;\n\n  var isUAgecko = 'undefined' !== typeof navigator && /gecko/i.test(navigator.userAgent);\n\n  if (isUAgecko) {\n    setTimeout(function () {\n      var iframe = document.createElement('iframe');\n      document.body.appendChild(iframe);\n      document.body.removeChild(iframe);\n    }, 100);\n  }\n};\n\n/**\n * Writes with a hidden iframe.\n *\n * @param {String} data to send\n * @param {Function} called upon flush.\n * @api private\n */\n\nJSONPPolling.prototype.doWrite = function (data, fn) {\n  var self = this;\n\n  if (!this.form) {\n    var form = document.createElement('form');\n    var area = document.createElement('textarea');\n    var id = this.iframeId = 'eio_iframe_' + this.index;\n    var iframe;\n\n    form.className = 'socketio';\n    form.style.position = 'absolute';\n    form.style.top = '-1000px';\n    form.style.left = '-1000px';\n    form.target = id;\n    form.method = 'POST';\n    form.setAttribute('accept-charset', 'utf-8');\n    area.name = 'd';\n    form.appendChild(area);\n    document.body.appendChild(form);\n\n    this.form = form;\n    this.area = area;\n  }\n\n  this.form.action = this.uri();\n\n  function complete () {\n    initIframe();\n    fn();\n  }\n\n  function initIframe () {\n    if (self.iframe) {\n      try {\n        self.form.removeChild(self.iframe);\n      } catch (e) {\n        self.onError('jsonp polling iframe removal error', e);\n      }\n    }\n\n    try {\n      // ie6 dynamic iframes with target=\"\" support (thanks Chris Lambacher)\n      var html = '<iframe src=\"javascript:0\" name=\"' + self.iframeId + '\">';\n      iframe = document.createElement(html);\n    } catch (e) {\n      iframe = document.createElement('iframe');\n      iframe.name = self.iframeId;\n      iframe.src = 'javascript:0';\n    }\n\n    iframe.id = self.iframeId;\n\n    self.form.appendChild(iframe);\n    self.iframe = iframe;\n  }\n\n  initIframe();\n\n  // escape \\n to prevent it from being converted into \\r\\n by some UAs\n  // double escaping is required for escaped new lines because unescaping of new lines can be done safely on server-side\n  data = data.replace(rEscapedNewline, '\\\\\\n');\n  this.area.value = data.replace(rNewline, '\\\\n');\n\n  try {\n    this.form.submit();\n  } catch (e) {}\n\n  if (this.iframe.attachEvent) {\n    this.iframe.onreadystatechange = function () {\n      if (self.iframe.readyState === 'complete') {\n        complete();\n      }\n    };\n  } else {\n    this.iframe.onload = complete;\n  }\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-client/lib/transports/polling-jsonp.js\n// module id = 34\n// module chunks = 0","/**\n * Module requirements.\n */\n\nvar XMLHttpRequest = require('xmlhttprequest-ssl');\nvar Polling = require('./polling');\nvar Emitter = require('component-emitter');\nvar inherit = require('component-inherit');\nvar debug = require('debug')('engine.io-client:polling-xhr');\n\n/**\n * Module exports.\n */\n\nmodule.exports = XHR;\nmodule.exports.Request = Request;\n\n/**\n * Empty function\n */\n\nfunction empty () {}\n\n/**\n * XHR Polling constructor.\n *\n * @param {Object} opts\n * @api public\n */\n\nfunction XHR (opts) {\n  Polling.call(this, opts);\n  this.requestTimeout = opts.requestTimeout;\n\n  if (global.location) {\n    var isSSL = 'https:' === location.protocol;\n    var port = location.port;\n\n    // some user agents have empty `location.port`\n    if (!port) {\n      port = isSSL ? 443 : 80;\n    }\n\n    this.xd = opts.hostname !== global.location.hostname ||\n      port !== opts.port;\n    this.xs = opts.secure !== isSSL;\n  } else {\n    this.extraHeaders = opts.extraHeaders;\n  }\n}\n\n/**\n * Inherits from Polling.\n */\n\ninherit(XHR, Polling);\n\n/**\n * XHR supports binary\n */\n\nXHR.prototype.supportsBinary = true;\n\n/**\n * Creates a request.\n *\n * @param {String} method\n * @api private\n */\n\nXHR.prototype.request = function (opts) {\n  opts = opts || {};\n  opts.uri = this.uri();\n  opts.xd = this.xd;\n  opts.xs = this.xs;\n  opts.agent = this.agent || false;\n  opts.supportsBinary = this.supportsBinary;\n  opts.enablesXDR = this.enablesXDR;\n\n  // SSL options for Node.js client\n  opts.pfx = this.pfx;\n  opts.key = this.key;\n  opts.passphrase = this.passphrase;\n  opts.cert = this.cert;\n  opts.ca = this.ca;\n  opts.ciphers = this.ciphers;\n  opts.rejectUnauthorized = this.rejectUnauthorized;\n  opts.requestTimeout = this.requestTimeout;\n\n  // other options for Node.js client\n  opts.extraHeaders = this.extraHeaders;\n\n  return new Request(opts);\n};\n\n/**\n * Sends data.\n *\n * @param {String} data to send.\n * @param {Function} called upon flush.\n * @api private\n */\n\nXHR.prototype.doWrite = function (data, fn) {\n  var isBinary = typeof data !== 'string' && data !== undefined;\n  var req = this.request({ method: 'POST', data: data, isBinary: isBinary });\n  var self = this;\n  req.on('success', fn);\n  req.on('error', function (err) {\n    self.onError('xhr post error', err);\n  });\n  this.sendXhr = req;\n};\n\n/**\n * Starts a poll cycle.\n *\n * @api private\n */\n\nXHR.prototype.doPoll = function () {\n  debug('xhr poll');\n  var req = this.request();\n  var self = this;\n  req.on('data', function (data) {\n    self.onData(data);\n  });\n  req.on('error', function (err) {\n    self.onError('xhr poll error', err);\n  });\n  this.pollXhr = req;\n};\n\n/**\n * Request constructor\n *\n * @param {Object} options\n * @api public\n */\n\nfunction Request (opts) {\n  this.method = opts.method || 'GET';\n  this.uri = opts.uri;\n  this.xd = !!opts.xd;\n  this.xs = !!opts.xs;\n  this.async = false !== opts.async;\n  this.data = undefined !== opts.data ? opts.data : null;\n  this.agent = opts.agent;\n  this.isBinary = opts.isBinary;\n  this.supportsBinary = opts.supportsBinary;\n  this.enablesXDR = opts.enablesXDR;\n  this.requestTimeout = opts.requestTimeout;\n\n  // SSL options for Node.js client\n  this.pfx = opts.pfx;\n  this.key = opts.key;\n  this.passphrase = opts.passphrase;\n  this.cert = opts.cert;\n  this.ca = opts.ca;\n  this.ciphers = opts.ciphers;\n  this.rejectUnauthorized = opts.rejectUnauthorized;\n\n  // other options for Node.js client\n  this.extraHeaders = opts.extraHeaders;\n\n  this.create();\n}\n\n/**\n * Mix in `Emitter`.\n */\n\nEmitter(Request.prototype);\n\n/**\n * Creates the XHR object and sends the request.\n *\n * @api private\n */\n\nRequest.prototype.create = function () {\n  var opts = { agent: this.agent, xdomain: this.xd, xscheme: this.xs, enablesXDR: this.enablesXDR };\n\n  // SSL options for Node.js client\n  opts.pfx = this.pfx;\n  opts.key = this.key;\n  opts.passphrase = this.passphrase;\n  opts.cert = this.cert;\n  opts.ca = this.ca;\n  opts.ciphers = this.ciphers;\n  opts.rejectUnauthorized = this.rejectUnauthorized;\n\n  var xhr = this.xhr = new XMLHttpRequest(opts);\n  var self = this;\n\n  try {\n    debug('xhr open %s: %s', this.method, this.uri);\n    xhr.open(this.method, this.uri, this.async);\n    try {\n      if (this.extraHeaders) {\n        xhr.setDisableHeaderCheck(true);\n        for (var i in this.extraHeaders) {\n          if (this.extraHeaders.hasOwnProperty(i)) {\n            xhr.setRequestHeader(i, this.extraHeaders[i]);\n          }\n        }\n      }\n    } catch (e) {}\n    if (this.supportsBinary) {\n      // This has to be done after open because Firefox is stupid\n      // http://stackoverflow.com/questions/13216903/get-binary-data-with-xmlhttprequest-in-a-firefox-extension\n      xhr.responseType = 'arraybuffer';\n    }\n\n    if ('POST' === this.method) {\n      try {\n        if (this.isBinary) {\n          xhr.setRequestHeader('Content-type', 'application/octet-stream');\n        } else {\n          xhr.setRequestHeader('Content-type', 'text/plain;charset=UTF-8');\n        }\n      } catch (e) {}\n    }\n\n    try {\n      xhr.setRequestHeader('Accept', '*/*');\n    } catch (e) {}\n\n    // ie6 check\n    if ('withCredentials' in xhr) {\n      xhr.withCredentials = true;\n    }\n\n    if (this.requestTimeout) {\n      xhr.timeout = this.requestTimeout;\n    }\n\n    if (this.hasXDR()) {\n      xhr.onload = function () {\n        self.onLoad();\n      };\n      xhr.onerror = function () {\n        self.onError(xhr.responseText);\n      };\n    } else {\n      xhr.onreadystatechange = function () {\n        if (4 !== xhr.readyState) return;\n        if (200 === xhr.status || 1223 === xhr.status) {\n          self.onLoad();\n        } else {\n          // make sure the `error` event handler that's user-set\n          // does not throw in the same tick and gets caught here\n          setTimeout(function () {\n            self.onError(xhr.status);\n          }, 0);\n        }\n      };\n    }\n\n    debug('xhr data %s', this.data);\n    xhr.send(this.data);\n  } catch (e) {\n    // Need to defer since .create() is called directly fhrom the constructor\n    // and thus the 'error' event can only be only bound *after* this exception\n    // occurs.  Therefore, also, we cannot throw here at all.\n    setTimeout(function () {\n      self.onError(e);\n    }, 0);\n    return;\n  }\n\n  if (global.document) {\n    this.index = Request.requestsCount++;\n    Request.requests[this.index] = this;\n  }\n};\n\n/**\n * Called upon successful response.\n *\n * @api private\n */\n\nRequest.prototype.onSuccess = function () {\n  this.emit('success');\n  this.cleanup();\n};\n\n/**\n * Called if we have data.\n *\n * @api private\n */\n\nRequest.prototype.onData = function (data) {\n  this.emit('data', data);\n  this.onSuccess();\n};\n\n/**\n * Called upon error.\n *\n * @api private\n */\n\nRequest.prototype.onError = function (err) {\n  this.emit('error', err);\n  this.cleanup(true);\n};\n\n/**\n * Cleans up house.\n *\n * @api private\n */\n\nRequest.prototype.cleanup = function (fromError) {\n  if ('undefined' === typeof this.xhr || null === this.xhr) {\n    return;\n  }\n  // xmlhttprequest\n  if (this.hasXDR()) {\n    this.xhr.onload = this.xhr.onerror = empty;\n  } else {\n    this.xhr.onreadystatechange = empty;\n  }\n\n  if (fromError) {\n    try {\n      this.xhr.abort();\n    } catch (e) {}\n  }\n\n  if (global.document) {\n    delete Request.requests[this.index];\n  }\n\n  this.xhr = null;\n};\n\n/**\n * Called upon load.\n *\n * @api private\n */\n\nRequest.prototype.onLoad = function () {\n  var data;\n  try {\n    var contentType;\n    try {\n      contentType = this.xhr.getResponseHeader('Content-Type').split(';')[0];\n    } catch (e) {}\n    if (contentType === 'application/octet-stream') {\n      data = this.xhr.response || this.xhr.responseText;\n    } else {\n      if (!this.supportsBinary) {\n        data = this.xhr.responseText;\n      } else {\n        try {\n          data = String.fromCharCode.apply(null, new Uint8Array(this.xhr.response));\n        } catch (e) {\n          var ui8Arr = new Uint8Array(this.xhr.response);\n          var dataArray = [];\n          for (var idx = 0, length = ui8Arr.length; idx < length; idx++) {\n            dataArray.push(ui8Arr[idx]);\n          }\n\n          data = String.fromCharCode.apply(null, dataArray);\n        }\n      }\n    }\n  } catch (e) {\n    this.onError(e);\n  }\n  if (null != data) {\n    this.onData(data);\n  }\n};\n\n/**\n * Check if it has XDomainRequest.\n *\n * @api private\n */\n\nRequest.prototype.hasXDR = function () {\n  return 'undefined' !== typeof global.XDomainRequest && !this.xs && this.enablesXDR;\n};\n\n/**\n * Aborts the request.\n *\n * @api public\n */\n\nRequest.prototype.abort = function () {\n  this.cleanup();\n};\n\n/**\n * Aborts pending requests when unloading the window. This is needed to prevent\n * memory leaks (e.g. when using IE) and to ensure that no spurious error is\n * emitted.\n */\n\nRequest.requestsCount = 0;\nRequest.requests = {};\n\nif (global.document) {\n  if (global.attachEvent) {\n    global.attachEvent('onunload', unloadHandler);\n  } else if (global.addEventListener) {\n    global.addEventListener('beforeunload', unloadHandler, false);\n  }\n}\n\nfunction unloadHandler () {\n  for (var i in Request.requests) {\n    if (Request.requests.hasOwnProperty(i)) {\n      Request.requests[i].abort();\n    }\n  }\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-client/lib/transports/polling-xhr.js\n// module id = 35\n// module chunks = 0","/**\n * Module dependencies.\n */\n\nvar Transport = require('../transport');\nvar parser = require('engine.io-parser');\nvar parseqs = require('parseqs');\nvar inherit = require('component-inherit');\nvar yeast = require('yeast');\nvar debug = require('debug')('engine.io-client:websocket');\nvar BrowserWebSocket = global.WebSocket || global.MozWebSocket;\nvar NodeWebSocket;\nif (typeof window === 'undefined') {\n  try {\n    NodeWebSocket = require('ws');\n  } catch (e) { }\n}\n\n/**\n * Get either the `WebSocket` or `MozWebSocket` globals\n * in the browser or try to resolve WebSocket-compatible\n * interface exposed by `ws` for Node-like environment.\n */\n\nvar WebSocket = BrowserWebSocket;\nif (!WebSocket && typeof window === 'undefined') {\n  WebSocket = NodeWebSocket;\n}\n\n/**\n * Module exports.\n */\n\nmodule.exports = WS;\n\n/**\n * WebSocket transport constructor.\n *\n * @api {Object} connection options\n * @api public\n */\n\nfunction WS (opts) {\n  var forceBase64 = (opts && opts.forceBase64);\n  if (forceBase64) {\n    this.supportsBinary = false;\n  }\n  this.perMessageDeflate = opts.perMessageDeflate;\n  this.usingBrowserWebSocket = BrowserWebSocket && !opts.forceNode;\n  if (!this.usingBrowserWebSocket) {\n    WebSocket = NodeWebSocket;\n  }\n  Transport.call(this, opts);\n}\n\n/**\n * Inherits from Transport.\n */\n\ninherit(WS, Transport);\n\n/**\n * Transport name.\n *\n * @api public\n */\n\nWS.prototype.name = 'websocket';\n\n/*\n * WebSockets support binary\n */\n\nWS.prototype.supportsBinary = true;\n\n/**\n * Opens socket.\n *\n * @api private\n */\n\nWS.prototype.doOpen = function () {\n  if (!this.check()) {\n    // let probe timeout\n    return;\n  }\n\n  var uri = this.uri();\n  var protocols = void (0);\n  var opts = {\n    agent: this.agent,\n    perMessageDeflate: this.perMessageDeflate\n  };\n\n  // SSL options for Node.js client\n  opts.pfx = this.pfx;\n  opts.key = this.key;\n  opts.passphrase = this.passphrase;\n  opts.cert = this.cert;\n  opts.ca = this.ca;\n  opts.ciphers = this.ciphers;\n  opts.rejectUnauthorized = this.rejectUnauthorized;\n  if (this.extraHeaders) {\n    opts.headers = this.extraHeaders;\n  }\n  if (this.localAddress) {\n    opts.localAddress = this.localAddress;\n  }\n\n  try {\n    this.ws = this.usingBrowserWebSocket ? new WebSocket(uri) : new WebSocket(uri, protocols, opts);\n  } catch (err) {\n    return this.emit('error', err);\n  }\n\n  if (this.ws.binaryType === undefined) {\n    this.supportsBinary = false;\n  }\n\n  if (this.ws.supports && this.ws.supports.binary) {\n    this.supportsBinary = true;\n    this.ws.binaryType = 'nodebuffer';\n  } else {\n    this.ws.binaryType = 'arraybuffer';\n  }\n\n  this.addEventListeners();\n};\n\n/**\n * Adds event listeners to the socket\n *\n * @api private\n */\n\nWS.prototype.addEventListeners = function () {\n  var self = this;\n\n  this.ws.onopen = function () {\n    self.onOpen();\n  };\n  this.ws.onclose = function () {\n    self.onClose();\n  };\n  this.ws.onmessage = function (ev) {\n    self.onData(ev.data);\n  };\n  this.ws.onerror = function (e) {\n    self.onError('websocket error', e);\n  };\n};\n\n/**\n * Writes data to socket.\n *\n * @param {Array} array of packets.\n * @api private\n */\n\nWS.prototype.write = function (packets) {\n  var self = this;\n  this.writable = false;\n\n  // encodePacket efficient as it uses WS framing\n  // no need for encodePayload\n  var total = packets.length;\n  for (var i = 0, l = total; i < l; i++) {\n    (function (packet) {\n      parser.encodePacket(packet, self.supportsBinary, function (data) {\n        if (!self.usingBrowserWebSocket) {\n          // always create a new object (GH-437)\n          var opts = {};\n          if (packet.options) {\n            opts.compress = packet.options.compress;\n          }\n\n          if (self.perMessageDeflate) {\n            var len = 'string' === typeof data ? global.Buffer.byteLength(data) : data.length;\n            if (len < self.perMessageDeflate.threshold) {\n              opts.compress = false;\n            }\n          }\n        }\n\n        // Sometimes the websocket has already been closed but the browser didn't\n        // have a chance of informing us about it yet, in that case send will\n        // throw an error\n        try {\n          if (self.usingBrowserWebSocket) {\n            // TypeError is thrown when passing the second argument on Safari\n            self.ws.send(data);\n          } else {\n            self.ws.send(data, opts);\n          }\n        } catch (e) {\n          debug('websocket closed before onclose event');\n        }\n\n        --total || done();\n      });\n    })(packets[i]);\n  }\n\n  function done () {\n    self.emit('flush');\n\n    // fake drain\n    // defer to next tick to allow Socket to clear writeBuffer\n    setTimeout(function () {\n      self.writable = true;\n      self.emit('drain');\n    }, 0);\n  }\n};\n\n/**\n * Called upon close\n *\n * @api private\n */\n\nWS.prototype.onClose = function () {\n  Transport.prototype.onClose.call(this);\n};\n\n/**\n * Closes socket.\n *\n * @api private\n */\n\nWS.prototype.doClose = function () {\n  if (typeof this.ws !== 'undefined') {\n    this.ws.close();\n  }\n};\n\n/**\n * Generates uri for connection.\n *\n * @api private\n */\n\nWS.prototype.uri = function () {\n  var query = this.query || {};\n  var schema = this.secure ? 'wss' : 'ws';\n  var port = '';\n\n  // avoid port if default for schema\n  if (this.port && (('wss' === schema && Number(this.port) !== 443) ||\n    ('ws' === schema && Number(this.port) !== 80))) {\n    port = ':' + this.port;\n  }\n\n  // append timestamp to URI\n  if (this.timestampRequests) {\n    query[this.timestampParam] = yeast();\n  }\n\n  // communicate binary support capabilities\n  if (!this.supportsBinary) {\n    query.b64 = 1;\n  }\n\n  query = parseqs.encode(query);\n\n  // prepend ? to query\n  if (query.length) {\n    query = '?' + query;\n  }\n\n  var ipv6 = this.hostname.indexOf(':') !== -1;\n  return schema + '://' + (ipv6 ? '[' + this.hostname + ']' : this.hostname) + port + this.path + query;\n};\n\n/**\n * Feature detection for WebSocket.\n *\n * @return {Boolean} whether this transport is available.\n * @api public\n */\n\nWS.prototype.check = function () {\n  return !!WebSocket && !('__initialize' in WebSocket && this.name === WS.prototype.name);\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-client/lib/transports/websocket.js\n// module id = 36\n// module chunks = 0","\n/**\n * Gets the keys for an object.\n *\n * @return {Array} keys\n * @api private\n */\n\nmodule.exports = Object.keys || function keys (obj){\n  var arr = [];\n  var has = Object.prototype.hasOwnProperty;\n\n  for (var i in obj) {\n    if (has.call(obj, i)) {\n      arr.push(i);\n    }\n  }\n  return arr;\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-parser/lib/keys.js\n// module id = 37\n// module chunks = 0","\n/**\n * Module exports.\n *\n * Logic borrowed from Modernizr:\n *\n *   - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js\n */\n\ntry {\n  module.exports = typeof XMLHttpRequest !== 'undefined' &&\n    'withCredentials' in new XMLHttpRequest();\n} catch (err) {\n  // if XMLHttp support is disabled in IE then it will throw\n  // when trying to create\n  module.exports = false;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/has-cors/index.js\n// module id = 38\n// module chunks = 0","/*! JSON v3.3.2 | http://bestiejs.github.io/json3 | Copyright 2012-2014, Kit Cambridge | http://kit.mit-license.org */\n;(function () {\n  // Detect the `define` function exposed by asynchronous module loaders. The\n  // strict `define` check is necessary for compatibility with `r.js`.\n  var isLoader = typeof define === \"function\" && define.amd;\n\n  // A set of types used to distinguish objects from primitives.\n  var objectTypes = {\n    \"function\": true,\n    \"object\": true\n  };\n\n  // Detect the `exports` object exposed by CommonJS implementations.\n  var freeExports = objectTypes[typeof exports] && exports && !exports.nodeType && exports;\n\n  // Use the `global` object exposed by Node (including Browserify via\n  // `insert-module-globals`), Narwhal, and Ringo as the default context,\n  // and the `window` object in browsers. Rhino exports a `global` function\n  // instead.\n  var root = objectTypes[typeof window] && window || this,\n      freeGlobal = freeExports && objectTypes[typeof module] && module && !module.nodeType && typeof global == \"object\" && global;\n\n  if (freeGlobal && (freeGlobal[\"global\"] === freeGlobal || freeGlobal[\"window\"] === freeGlobal || freeGlobal[\"self\"] === freeGlobal)) {\n    root = freeGlobal;\n  }\n\n  // Public: Initializes JSON 3 using the given `context` object, attaching the\n  // `stringify` and `parse` functions to the specified `exports` object.\n  function runInContext(context, exports) {\n    context || (context = root[\"Object\"]());\n    exports || (exports = root[\"Object\"]());\n\n    // Native constructor aliases.\n    var Number = context[\"Number\"] || root[\"Number\"],\n        String = context[\"String\"] || root[\"String\"],\n        Object = context[\"Object\"] || root[\"Object\"],\n        Date = context[\"Date\"] || root[\"Date\"],\n        SyntaxError = context[\"SyntaxError\"] || root[\"SyntaxError\"],\n        TypeError = context[\"TypeError\"] || root[\"TypeError\"],\n        Math = context[\"Math\"] || root[\"Math\"],\n        nativeJSON = context[\"JSON\"] || root[\"JSON\"];\n\n    // Delegate to the native `stringify` and `parse` implementations.\n    if (typeof nativeJSON == \"object\" && nativeJSON) {\n      exports.stringify = nativeJSON.stringify;\n      exports.parse = nativeJSON.parse;\n    }\n\n    // Convenience aliases.\n    var objectProto = Object.prototype,\n        getClass = objectProto.toString,\n        isProperty, forEach, undef;\n\n    // Test the `Date#getUTC*` methods. Based on work by @Yaffle.\n    var isExtended = new Date(-3509827334573292);\n    try {\n      // The `getUTCFullYear`, `Month`, and `Date` methods return nonsensical\n      // results for certain dates in Opera >= 10.53.\n      isExtended = isExtended.getUTCFullYear() == -109252 && isExtended.getUTCMonth() === 0 && isExtended.getUTCDate() === 1 &&\n        // Safari < 2.0.2 stores the internal millisecond time value correctly,\n        // but clips the values returned by the date methods to the range of\n        // signed 32-bit integers ([-2 ** 31, 2 ** 31 - 1]).\n        isExtended.getUTCHours() == 10 && isExtended.getUTCMinutes() == 37 && isExtended.getUTCSeconds() == 6 && isExtended.getUTCMilliseconds() == 708;\n    } catch (exception) {}\n\n    // Internal: Determines whether the native `JSON.stringify` and `parse`\n    // implementations are spec-compliant. Based on work by Ken Snyder.\n    function has(name) {\n      if (has[name] !== undef) {\n        // Return cached feature test result.\n        return has[name];\n      }\n      var isSupported;\n      if (name == \"bug-string-char-index\") {\n        // IE <= 7 doesn't support accessing string characters using square\n        // bracket notation. IE 8 only supports this for primitives.\n        isSupported = \"a\"[0] != \"a\";\n      } else if (name == \"json\") {\n        // Indicates whether both `JSON.stringify` and `JSON.parse` are\n        // supported.\n        isSupported = has(\"json-stringify\") && has(\"json-parse\");\n      } else {\n        var value, serialized = '{\"a\":[1,true,false,null,\"\\\\u0000\\\\b\\\\n\\\\f\\\\r\\\\t\"]}';\n        // Test `JSON.stringify`.\n        if (name == \"json-stringify\") {\n          var stringify = exports.stringify, stringifySupported = typeof stringify == \"function\" && isExtended;\n          if (stringifySupported) {\n            // A test function object with a custom `toJSON` method.\n            (value = function () {\n              return 1;\n            }).toJSON = value;\n            try {\n              stringifySupported =\n                // Firefox 3.1b1 and b2 serialize string, number, and boolean\n                // primitives as object literals.\n                stringify(0) === \"0\" &&\n                // FF 3.1b1, b2, and JSON 2 serialize wrapped primitives as object\n                // literals.\n                stringify(new Number()) === \"0\" &&\n                stringify(new String()) == '\"\"' &&\n                // FF 3.1b1, 2 throw an error if the value is `null`, `undefined`, or\n                // does not define a canonical JSON representation (this applies to\n                // objects with `toJSON` properties as well, *unless* they are nested\n                // within an object or array).\n                stringify(getClass) === undef &&\n                // IE 8 serializes `undefined` as `\"undefined\"`. Safari <= 5.1.7 and\n                // FF 3.1b3 pass this test.\n                stringify(undef) === undef &&\n                // Safari <= 5.1.7 and FF 3.1b3 throw `Error`s and `TypeError`s,\n                // respectively, if the value is omitted entirely.\n                stringify() === undef &&\n                // FF 3.1b1, 2 throw an error if the given value is not a number,\n                // string, array, object, Boolean, or `null` literal. This applies to\n                // objects with custom `toJSON` methods as well, unless they are nested\n                // inside object or array literals. YUI 3.0.0b1 ignores custom `toJSON`\n                // methods entirely.\n                stringify(value) === \"1\" &&\n                stringify([value]) == \"[1]\" &&\n                // Prototype <= 1.6.1 serializes `[undefined]` as `\"[]\"` instead of\n                // `\"[null]\"`.\n                stringify([undef]) == \"[null]\" &&\n                // YUI 3.0.0b1 fails to serialize `null` literals.\n                stringify(null) == \"null\" &&\n                // FF 3.1b1, 2 halts serialization if an array contains a function:\n                // `[1, true, getClass, 1]` serializes as \"[1,true,],\". FF 3.1b3\n                // elides non-JSON values from objects and arrays, unless they\n                // define custom `toJSON` methods.\n                stringify([undef, getClass, null]) == \"[null,null,null]\" &&\n                // Simple serialization test. FF 3.1b1 uses Unicode escape sequences\n                // where character escape codes are expected (e.g., `\\b` => `\\u0008`).\n                stringify({ \"a\": [value, true, false, null, \"\\x00\\b\\n\\f\\r\\t\"] }) == serialized &&\n                // FF 3.1b1 and b2 ignore the `filter` and `width` arguments.\n                stringify(null, value) === \"1\" &&\n                stringify([1, 2], null, 1) == \"[\\n 1,\\n 2\\n]\" &&\n                // JSON 2, Prototype <= 1.7, and older WebKit builds incorrectly\n                // serialize extended years.\n                stringify(new Date(-8.64e15)) == '\"-271821-04-20T00:00:00.000Z\"' &&\n                // The milliseconds are optional in ES 5, but required in 5.1.\n                stringify(new Date(8.64e15)) == '\"+275760-09-13T00:00:00.000Z\"' &&\n                // Firefox <= 11.0 incorrectly serializes years prior to 0 as negative\n                // four-digit years instead of six-digit years. Credits: @Yaffle.\n                stringify(new Date(-621987552e5)) == '\"-000001-01-01T00:00:00.000Z\"' &&\n                // Safari <= 5.1.5 and Opera >= 10.53 incorrectly serialize millisecond\n                // values less than 1000. Credits: @Yaffle.\n                stringify(new Date(-1)) == '\"1969-12-31T23:59:59.999Z\"';\n            } catch (exception) {\n              stringifySupported = false;\n            }\n          }\n          isSupported = stringifySupported;\n        }\n        // Test `JSON.parse`.\n        if (name == \"json-parse\") {\n          var parse = exports.parse;\n          if (typeof parse == \"function\") {\n            try {\n              // FF 3.1b1, b2 will throw an exception if a bare literal is provided.\n              // Conforming implementations should also coerce the initial argument to\n              // a string prior to parsing.\n              if (parse(\"0\") === 0 && !parse(false)) {\n                // Simple parsing test.\n                value = parse(serialized);\n                var parseSupported = value[\"a\"].length == 5 && value[\"a\"][0] === 1;\n                if (parseSupported) {\n                  try {\n                    // Safari <= 5.1.2 and FF 3.1b1 allow unescaped tabs in strings.\n                    parseSupported = !parse('\"\\t\"');\n                  } catch (exception) {}\n                  if (parseSupported) {\n                    try {\n                      // FF 4.0 and 4.0.1 allow leading `+` signs and leading\n                      // decimal points. FF 4.0, 4.0.1, and IE 9-10 also allow\n                      // certain octal literals.\n                      parseSupported = parse(\"01\") !== 1;\n                    } catch (exception) {}\n                  }\n                  if (parseSupported) {\n                    try {\n                      // FF 4.0, 4.0.1, and Rhino 1.7R3-R4 allow trailing decimal\n                      // points. These environments, along with FF 3.1b1 and 2,\n                      // also allow trailing commas in JSON objects and arrays.\n                      parseSupported = parse(\"1.\") !== 1;\n                    } catch (exception) {}\n                  }\n                }\n              }\n            } catch (exception) {\n              parseSupported = false;\n            }\n          }\n          isSupported = parseSupported;\n        }\n      }\n      return has[name] = !!isSupported;\n    }\n\n    if (!has(\"json\")) {\n      // Common `[[Class]]` name aliases.\n      var functionClass = \"[object Function]\",\n          dateClass = \"[object Date]\",\n          numberClass = \"[object Number]\",\n          stringClass = \"[object String]\",\n          arrayClass = \"[object Array]\",\n          booleanClass = \"[object Boolean]\";\n\n      // Detect incomplete support for accessing string characters by index.\n      var charIndexBuggy = has(\"bug-string-char-index\");\n\n      // Define additional utility methods if the `Date` methods are buggy.\n      if (!isExtended) {\n        var floor = Math.floor;\n        // A mapping between the months of the year and the number of days between\n        // January 1st and the first of the respective month.\n        var Months = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334];\n        // Internal: Calculates the number of days between the Unix epoch and the\n        // first day of the given month.\n        var getDay = function (year, month) {\n          return Months[month] + 365 * (year - 1970) + floor((year - 1969 + (month = +(month > 1))) / 4) - floor((year - 1901 + month) / 100) + floor((year - 1601 + month) / 400);\n        };\n      }\n\n      // Internal: Determines if a property is a direct property of the given\n      // object. Delegates to the native `Object#hasOwnProperty` method.\n      if (!(isProperty = objectProto.hasOwnProperty)) {\n        isProperty = function (property) {\n          var members = {}, constructor;\n          if ((members.__proto__ = null, members.__proto__ = {\n            // The *proto* property cannot be set multiple times in recent\n            // versions of Firefox and SeaMonkey.\n            \"toString\": 1\n          }, members).toString != getClass) {\n            // Safari <= 2.0.3 doesn't implement `Object#hasOwnProperty`, but\n            // supports the mutable *proto* property.\n            isProperty = function (property) {\n              // Capture and break the object's prototype chain (see section 8.6.2\n              // of the ES 5.1 spec). The parenthesized expression prevents an\n              // unsafe transformation by the Closure Compiler.\n              var original = this.__proto__, result = property in (this.__proto__ = null, this);\n              // Restore the original prototype chain.\n              this.__proto__ = original;\n              return result;\n            };\n          } else {\n            // Capture a reference to the top-level `Object` constructor.\n            constructor = members.constructor;\n            // Use the `constructor` property to simulate `Object#hasOwnProperty` in\n            // other environments.\n            isProperty = function (property) {\n              var parent = (this.constructor || constructor).prototype;\n              return property in this && !(property in parent && this[property] === parent[property]);\n            };\n          }\n          members = null;\n          return isProperty.call(this, property);\n        };\n      }\n\n      // Internal: Normalizes the `for...in` iteration algorithm across\n      // environments. Each enumerated key is yielded to a `callback` function.\n      forEach = function (object, callback) {\n        var size = 0, Properties, members, property;\n\n        // Tests for bugs in the current environment's `for...in` algorithm. The\n        // `valueOf` property inherits the non-enumerable flag from\n        // `Object.prototype` in older versions of IE, Netscape, and Mozilla.\n        (Properties = function () {\n          this.valueOf = 0;\n        }).prototype.valueOf = 0;\n\n        // Iterate over a new instance of the `Properties` class.\n        members = new Properties();\n        for (property in members) {\n          // Ignore all properties inherited from `Object.prototype`.\n          if (isProperty.call(members, property)) {\n            size++;\n          }\n        }\n        Properties = members = null;\n\n        // Normalize the iteration algorithm.\n        if (!size) {\n          // A list of non-enumerable properties inherited from `Object.prototype`.\n          members = [\"valueOf\", \"toString\", \"toLocaleString\", \"propertyIsEnumerable\", \"isPrototypeOf\", \"hasOwnProperty\", \"constructor\"];\n          // IE <= 8, Mozilla 1.0, and Netscape 6.2 ignore shadowed non-enumerable\n          // properties.\n          forEach = function (object, callback) {\n            var isFunction = getClass.call(object) == functionClass, property, length;\n            var hasProperty = !isFunction && typeof object.constructor != \"function\" && objectTypes[typeof object.hasOwnProperty] && object.hasOwnProperty || isProperty;\n            for (property in object) {\n              // Gecko <= 1.0 enumerates the `prototype` property of functions under\n              // certain conditions; IE does not.\n              if (!(isFunction && property == \"prototype\") && hasProperty.call(object, property)) {\n                callback(property);\n              }\n            }\n            // Manually invoke the callback for each non-enumerable property.\n            for (length = members.length; property = members[--length]; hasProperty.call(object, property) && callback(property));\n          };\n        } else if (size == 2) {\n          // Safari <= 2.0.4 enumerates shadowed properties twice.\n          forEach = function (object, callback) {\n            // Create a set of iterated properties.\n            var members = {}, isFunction = getClass.call(object) == functionClass, property;\n            for (property in object) {\n              // Store each property name to prevent double enumeration. The\n              // `prototype` property of functions is not enumerated due to cross-\n              // environment inconsistencies.\n              if (!(isFunction && property == \"prototype\") && !isProperty.call(members, property) && (members[property] = 1) && isProperty.call(object, property)) {\n                callback(property);\n              }\n            }\n          };\n        } else {\n          // No bugs detected; use the standard `for...in` algorithm.\n          forEach = function (object, callback) {\n            var isFunction = getClass.call(object) == functionClass, property, isConstructor;\n            for (property in object) {\n              if (!(isFunction && property == \"prototype\") && isProperty.call(object, property) && !(isConstructor = property === \"constructor\")) {\n                callback(property);\n              }\n            }\n            // Manually invoke the callback for the `constructor` property due to\n            // cross-environment inconsistencies.\n            if (isConstructor || isProperty.call(object, (property = \"constructor\"))) {\n              callback(property);\n            }\n          };\n        }\n        return forEach(object, callback);\n      };\n\n      // Public: Serializes a JavaScript `value` as a JSON string. The optional\n      // `filter` argument may specify either a function that alters how object and\n      // array members are serialized, or an array of strings and numbers that\n      // indicates which properties should be serialized. The optional `width`\n      // argument may be either a string or number that specifies the indentation\n      // level of the output.\n      if (!has(\"json-stringify\")) {\n        // Internal: A map of control characters and their escaped equivalents.\n        var Escapes = {\n          92: \"\\\\\\\\\",\n          34: '\\\\\"',\n          8: \"\\\\b\",\n          12: \"\\\\f\",\n          10: \"\\\\n\",\n          13: \"\\\\r\",\n          9: \"\\\\t\"\n        };\n\n        // Internal: Converts `value` into a zero-padded string such that its\n        // length is at least equal to `width`. The `width` must be <= 6.\n        var leadingZeroes = \"000000\";\n        var toPaddedString = function (width, value) {\n          // The `|| 0` expression is necessary to work around a bug in\n          // Opera <= 7.54u2 where `0 == -0`, but `String(-0) !== \"0\"`.\n          return (leadingZeroes + (value || 0)).slice(-width);\n        };\n\n        // Internal: Double-quotes a string `value`, replacing all ASCII control\n        // characters (characters with code unit values between 0 and 31) with\n        // their escaped equivalents. This is an implementation of the\n        // `Quote(value)` operation defined in ES 5.1 section 15.12.3.\n        var unicodePrefix = \"\\\\u00\";\n        var quote = function (value) {\n          var result = '\"', index = 0, length = value.length, useCharIndex = !charIndexBuggy || length > 10;\n          var symbols = useCharIndex && (charIndexBuggy ? value.split(\"\") : value);\n          for (; index < length; index++) {\n            var charCode = value.charCodeAt(index);\n            // If the character is a control character, append its Unicode or\n            // shorthand escape sequence; otherwise, append the character as-is.\n            switch (charCode) {\n              case 8: case 9: case 10: case 12: case 13: case 34: case 92:\n                result += Escapes[charCode];\n                break;\n              default:\n                if (charCode < 32) {\n                  result += unicodePrefix + toPaddedString(2, charCode.toString(16));\n                  break;\n                }\n                result += useCharIndex ? symbols[index] : value.charAt(index);\n            }\n          }\n          return result + '\"';\n        };\n\n        // Internal: Recursively serializes an object. Implements the\n        // `Str(key, holder)`, `JO(value)`, and `JA(value)` operations.\n        var serialize = function (property, object, callback, properties, whitespace, indentation, stack) {\n          var value, className, year, month, date, time, hours, minutes, seconds, milliseconds, results, element, index, length, prefix, result;\n          try {\n            // Necessary for host object support.\n            value = object[property];\n          } catch (exception) {}\n          if (typeof value == \"object\" && value) {\n            className = getClass.call(value);\n            if (className == dateClass && !isProperty.call(value, \"toJSON\")) {\n              if (value > -1 / 0 && value < 1 / 0) {\n                // Dates are serialized according to the `Date#toJSON` method\n                // specified in ES 5.1 section 15.9.5.44. See section 15.9.1.15\n                // for the ISO 8601 date time string format.\n                if (getDay) {\n                  // Manually compute the year, month, date, hours, minutes,\n                  // seconds, and milliseconds if the `getUTC*` methods are\n                  // buggy. Adapted from @Yaffle's `date-shim` project.\n                  date = floor(value / 864e5);\n                  for (year = floor(date / 365.2425) + 1970 - 1; getDay(year + 1, 0) <= date; year++);\n                  for (month = floor((date - getDay(year, 0)) / 30.42); getDay(year, month + 1) <= date; month++);\n                  date = 1 + date - getDay(year, month);\n                  // The `time` value specifies the time within the day (see ES\n                  // 5.1 section 15.9.1.2). The formula `(A % B + B) % B` is used\n                  // to compute `A modulo B`, as the `%` operator does not\n                  // correspond to the `modulo` operation for negative numbers.\n                  time = (value % 864e5 + 864e5) % 864e5;\n                  // The hours, minutes, seconds, and milliseconds are obtained by\n                  // decomposing the time within the day. See section 15.9.1.10.\n                  hours = floor(time / 36e5) % 24;\n                  minutes = floor(time / 6e4) % 60;\n                  seconds = floor(time / 1e3) % 60;\n                  milliseconds = time % 1e3;\n                } else {\n                  year = value.getUTCFullYear();\n                  month = value.getUTCMonth();\n                  date = value.getUTCDate();\n                  hours = value.getUTCHours();\n                  minutes = value.getUTCMinutes();\n                  seconds = value.getUTCSeconds();\n                  milliseconds = value.getUTCMilliseconds();\n                }\n                // Serialize extended years correctly.\n                value = (year <= 0 || year >= 1e4 ? (year < 0 ? \"-\" : \"+\") + toPaddedString(6, year < 0 ? -year : year) : toPaddedString(4, year)) +\n                  \"-\" + toPaddedString(2, month + 1) + \"-\" + toPaddedString(2, date) +\n                  // Months, dates, hours, minutes, and seconds should have two\n                  // digits; milliseconds should have three.\n                  \"T\" + toPaddedString(2, hours) + \":\" + toPaddedString(2, minutes) + \":\" + toPaddedString(2, seconds) +\n                  // Milliseconds are optional in ES 5.0, but required in 5.1.\n                  \".\" + toPaddedString(3, milliseconds) + \"Z\";\n              } else {\n                value = null;\n              }\n            } else if (typeof value.toJSON == \"function\" && ((className != numberClass && className != stringClass && className != arrayClass) || isProperty.call(value, \"toJSON\"))) {\n              // Prototype <= 1.6.1 adds non-standard `toJSON` methods to the\n              // `Number`, `String`, `Date`, and `Array` prototypes. JSON 3\n              // ignores all `toJSON` methods on these objects unless they are\n              // defined directly on an instance.\n              value = value.toJSON(property);\n            }\n          }\n          if (callback) {\n            // If a replacement function was provided, call it to obtain the value\n            // for serialization.\n            value = callback.call(object, property, value);\n          }\n          if (value === null) {\n            return \"null\";\n          }\n          className = getClass.call(value);\n          if (className == booleanClass) {\n            // Booleans are represented literally.\n            return \"\" + value;\n          } else if (className == numberClass) {\n            // JSON numbers must be finite. `Infinity` and `NaN` are serialized as\n            // `\"null\"`.\n            return value > -1 / 0 && value < 1 / 0 ? \"\" + value : \"null\";\n          } else if (className == stringClass) {\n            // Strings are double-quoted and escaped.\n            return quote(\"\" + value);\n          }\n          // Recursively serialize objects and arrays.\n          if (typeof value == \"object\") {\n            // Check for cyclic structures. This is a linear search; performance\n            // is inversely proportional to the number of unique nested objects.\n            for (length = stack.length; length--;) {\n              if (stack[length] === value) {\n                // Cyclic structures cannot be serialized by `JSON.stringify`.\n                throw TypeError();\n              }\n            }\n            // Add the object to the stack of traversed objects.\n            stack.push(value);\n            results = [];\n            // Save the current indentation level and indent one additional level.\n            prefix = indentation;\n            indentation += whitespace;\n            if (className == arrayClass) {\n              // Recursively serialize array elements.\n              for (index = 0, length = value.length; index < length; index++) {\n                element = serialize(index, value, callback, properties, whitespace, indentation, stack);\n                results.push(element === undef ? \"null\" : element);\n              }\n              result = results.length ? (whitespace ? \"[\\n\" + indentation + results.join(\",\\n\" + indentation) + \"\\n\" + prefix + \"]\" : (\"[\" + results.join(\",\") + \"]\")) : \"[]\";\n            } else {\n              // Recursively serialize object members. Members are selected from\n              // either a user-specified list of property names, or the object\n              // itself.\n              forEach(properties || value, function (property) {\n                var element = serialize(property, value, callback, properties, whitespace, indentation, stack);\n                if (element !== undef) {\n                  // According to ES 5.1 section 15.12.3: \"If `gap` {whitespace}\n                  // is not the empty string, let `member` {quote(property) + \":\"}\n                  // be the concatenation of `member` and the `space` character.\"\n                  // The \"`space` character\" refers to the literal space\n                  // character, not the `space` {width} argument provided to\n                  // `JSON.stringify`.\n                  results.push(quote(property) + \":\" + (whitespace ? \" \" : \"\") + element);\n                }\n              });\n              result = results.length ? (whitespace ? \"{\\n\" + indentation + results.join(\",\\n\" + indentation) + \"\\n\" + prefix + \"}\" : (\"{\" + results.join(\",\") + \"}\")) : \"{}\";\n            }\n            // Remove the object from the traversed object stack.\n            stack.pop();\n            return result;\n          }\n        };\n\n        // Public: `JSON.stringify`. See ES 5.1 section 15.12.3.\n        exports.stringify = function (source, filter, width) {\n          var whitespace, callback, properties, className;\n          if (objectTypes[typeof filter] && filter) {\n            if ((className = getClass.call(filter)) == functionClass) {\n              callback = filter;\n            } else if (className == arrayClass) {\n              // Convert the property names array into a makeshift set.\n              properties = {};\n              for (var index = 0, length = filter.length, value; index < length; value = filter[index++], ((className = getClass.call(value)), className == stringClass || className == numberClass) && (properties[value] = 1));\n            }\n          }\n          if (width) {\n            if ((className = getClass.call(width)) == numberClass) {\n              // Convert the `width` to an integer and create a string containing\n              // `width` number of space characters.\n              if ((width -= width % 1) > 0) {\n                for (whitespace = \"\", width > 10 && (width = 10); whitespace.length < width; whitespace += \" \");\n              }\n            } else if (className == stringClass) {\n              whitespace = width.length <= 10 ? width : width.slice(0, 10);\n            }\n          }\n          // Opera <= 7.54u2 discards the values associated with empty string keys\n          // (`\"\"`) only if they are used directly within an object member list\n          // (e.g., `!(\"\" in { \"\": 1})`).\n          return serialize(\"\", (value = {}, value[\"\"] = source, value), callback, properties, whitespace, \"\", []);\n        };\n      }\n\n      // Public: Parses a JSON source string.\n      if (!has(\"json-parse\")) {\n        var fromCharCode = String.fromCharCode;\n\n        // Internal: A map of escaped control characters and their unescaped\n        // equivalents.\n        var Unescapes = {\n          92: \"\\\\\",\n          34: '\"',\n          47: \"/\",\n          98: \"\\b\",\n          116: \"\\t\",\n          110: \"\\n\",\n          102: \"\\f\",\n          114: \"\\r\"\n        };\n\n        // Internal: Stores the parser state.\n        var Index, Source;\n\n        // Internal: Resets the parser state and throws a `SyntaxError`.\n        var abort = function () {\n          Index = Source = null;\n          throw SyntaxError();\n        };\n\n        // Internal: Returns the next token, or `\"$\"` if the parser has reached\n        // the end of the source string. A token may be a string, number, `null`\n        // literal, or Boolean literal.\n        var lex = function () {\n          var source = Source, length = source.length, value, begin, position, isSigned, charCode;\n          while (Index < length) {\n            charCode = source.charCodeAt(Index);\n            switch (charCode) {\n              case 9: case 10: case 13: case 32:\n                // Skip whitespace tokens, including tabs, carriage returns, line\n                // feeds, and space characters.\n                Index++;\n                break;\n              case 123: case 125: case 91: case 93: case 58: case 44:\n                // Parse a punctuator token (`{`, `}`, `[`, `]`, `:`, or `,`) at\n                // the current position.\n                value = charIndexBuggy ? source.charAt(Index) : source[Index];\n                Index++;\n                return value;\n              case 34:\n                // `\"` delimits a JSON string; advance to the next character and\n                // begin parsing the string. String tokens are prefixed with the\n                // sentinel `@` character to distinguish them from punctuators and\n                // end-of-string tokens.\n                for (value = \"@\", Index++; Index < length;) {\n                  charCode = source.charCodeAt(Index);\n                  if (charCode < 32) {\n                    // Unescaped ASCII control characters (those with a code unit\n                    // less than the space character) are not permitted.\n                    abort();\n                  } else if (charCode == 92) {\n                    // A reverse solidus (`\\`) marks the beginning of an escaped\n                    // control character (including `\"`, `\\`, and `/`) or Unicode\n                    // escape sequence.\n                    charCode = source.charCodeAt(++Index);\n                    switch (charCode) {\n                      case 92: case 34: case 47: case 98: case 116: case 110: case 102: case 114:\n                        // Revive escaped control characters.\n                        value += Unescapes[charCode];\n                        Index++;\n                        break;\n                      case 117:\n                        // `\\u` marks the beginning of a Unicode escape sequence.\n                        // Advance to the first character and validate the\n                        // four-digit code point.\n                        begin = ++Index;\n                        for (position = Index + 4; Index < position; Index++) {\n                          charCode = source.charCodeAt(Index);\n                          // A valid sequence comprises four hexdigits (case-\n                          // insensitive) that form a single hexadecimal value.\n                          if (!(charCode >= 48 && charCode <= 57 || charCode >= 97 && charCode <= 102 || charCode >= 65 && charCode <= 70)) {\n                            // Invalid Unicode escape sequence.\n                            abort();\n                          }\n                        }\n                        // Revive the escaped character.\n                        value += fromCharCode(\"0x\" + source.slice(begin, Index));\n                        break;\n                      default:\n                        // Invalid escape sequence.\n                        abort();\n                    }\n                  } else {\n                    if (charCode == 34) {\n                      // An unescaped double-quote character marks the end of the\n                      // string.\n                      break;\n                    }\n                    charCode = source.charCodeAt(Index);\n                    begin = Index;\n                    // Optimize for the common case where a string is valid.\n                    while (charCode >= 32 && charCode != 92 && charCode != 34) {\n                      charCode = source.charCodeAt(++Index);\n                    }\n                    // Append the string as-is.\n                    value += source.slice(begin, Index);\n                  }\n                }\n                if (source.charCodeAt(Index) == 34) {\n                  // Advance to the next character and return the revived string.\n                  Index++;\n                  return value;\n                }\n                // Unterminated string.\n                abort();\n              default:\n                // Parse numbers and literals.\n                begin = Index;\n                // Advance past the negative sign, if one is specified.\n                if (charCode == 45) {\n                  isSigned = true;\n                  charCode = source.charCodeAt(++Index);\n                }\n                // Parse an integer or floating-point value.\n                if (charCode >= 48 && charCode <= 57) {\n                  // Leading zeroes are interpreted as octal literals.\n                  if (charCode == 48 && ((charCode = source.charCodeAt(Index + 1)), charCode >= 48 && charCode <= 57)) {\n                    // Illegal octal literal.\n                    abort();\n                  }\n                  isSigned = false;\n                  // Parse the integer component.\n                  for (; Index < length && ((charCode = source.charCodeAt(Index)), charCode >= 48 && charCode <= 57); Index++);\n                  // Floats cannot contain a leading decimal point; however, this\n                  // case is already accounted for by the parser.\n                  if (source.charCodeAt(Index) == 46) {\n                    position = ++Index;\n                    // Parse the decimal component.\n                    for (; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++);\n                    if (position == Index) {\n                      // Illegal trailing decimal.\n                      abort();\n                    }\n                    Index = position;\n                  }\n                  // Parse exponents. The `e` denoting the exponent is\n                  // case-insensitive.\n                  charCode = source.charCodeAt(Index);\n                  if (charCode == 101 || charCode == 69) {\n                    charCode = source.charCodeAt(++Index);\n                    // Skip past the sign following the exponent, if one is\n                    // specified.\n                    if (charCode == 43 || charCode == 45) {\n                      Index++;\n                    }\n                    // Parse the exponential component.\n                    for (position = Index; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++);\n                    if (position == Index) {\n                      // Illegal empty exponent.\n                      abort();\n                    }\n                    Index = position;\n                  }\n                  // Coerce the parsed value to a JavaScript number.\n                  return +source.slice(begin, Index);\n                }\n                // A negative sign may only precede numbers.\n                if (isSigned) {\n                  abort();\n                }\n                // `true`, `false`, and `null` literals.\n                if (source.slice(Index, Index + 4) == \"true\") {\n                  Index += 4;\n                  return true;\n                } else if (source.slice(Index, Index + 5) == \"false\") {\n                  Index += 5;\n                  return false;\n                } else if (source.slice(Index, Index + 4) == \"null\") {\n                  Index += 4;\n                  return null;\n                }\n                // Unrecognized token.\n                abort();\n            }\n          }\n          // Return the sentinel `$` character if the parser has reached the end\n          // of the source string.\n          return \"$\";\n        };\n\n        // Internal: Parses a JSON `value` token.\n        var get = function (value) {\n          var results, hasMembers;\n          if (value == \"$\") {\n            // Unexpected end of input.\n            abort();\n          }\n          if (typeof value == \"string\") {\n            if ((charIndexBuggy ? value.charAt(0) : value[0]) == \"@\") {\n              // Remove the sentinel `@` character.\n              return value.slice(1);\n            }\n            // Parse object and array literals.\n            if (value == \"[\") {\n              // Parses a JSON array, returning a new JavaScript array.\n              results = [];\n              for (;; hasMembers || (hasMembers = true)) {\n                value = lex();\n                // A closing square bracket marks the end of the array literal.\n                if (value == \"]\") {\n                  break;\n                }\n                // If the array literal contains elements, the current token\n                // should be a comma separating the previous element from the\n                // next.\n                if (hasMembers) {\n                  if (value == \",\") {\n                    value = lex();\n                    if (value == \"]\") {\n                      // Unexpected trailing `,` in array literal.\n                      abort();\n                    }\n                  } else {\n                    // A `,` must separate each array element.\n                    abort();\n                  }\n                }\n                // Elisions and leading commas are not permitted.\n                if (value == \",\") {\n                  abort();\n                }\n                results.push(get(value));\n              }\n              return results;\n            } else if (value == \"{\") {\n              // Parses a JSON object, returning a new JavaScript object.\n              results = {};\n              for (;; hasMembers || (hasMembers = true)) {\n                value = lex();\n                // A closing curly brace marks the end of the object literal.\n                if (value == \"}\") {\n                  break;\n                }\n                // If the object literal contains members, the current token\n                // should be a comma separator.\n                if (hasMembers) {\n                  if (value == \",\") {\n                    value = lex();\n                    if (value == \"}\") {\n                      // Unexpected trailing `,` in object literal.\n                      abort();\n                    }\n                  } else {\n                    // A `,` must separate each object member.\n                    abort();\n                  }\n                }\n                // Leading commas are not permitted, object property names must be\n                // double-quoted strings, and a `:` must separate each property\n                // name and value.\n                if (value == \",\" || typeof value != \"string\" || (charIndexBuggy ? value.charAt(0) : value[0]) != \"@\" || lex() != \":\") {\n                  abort();\n                }\n                results[value.slice(1)] = get(lex());\n              }\n              return results;\n            }\n            // Unexpected token encountered.\n            abort();\n          }\n          return value;\n        };\n\n        // Internal: Updates a traversed object member.\n        var update = function (source, property, callback) {\n          var element = walk(source, property, callback);\n          if (element === undef) {\n            delete source[property];\n          } else {\n            source[property] = element;\n          }\n        };\n\n        // Internal: Recursively traverses a parsed JSON object, invoking the\n        // `callback` function for each value. This is an implementation of the\n        // `Walk(holder, name)` operation defined in ES 5.1 section 15.12.2.\n        var walk = function (source, property, callback) {\n          var value = source[property], length;\n          if (typeof value == \"object\" && value) {\n            // `forEach` can't be used to traverse an array in Opera <= 8.54\n            // because its `Object#hasOwnProperty` implementation returns `false`\n            // for array indices (e.g., `![1, 2, 3].hasOwnProperty(\"0\")`).\n            if (getClass.call(value) == arrayClass) {\n              for (length = value.length; length--;) {\n                update(value, length, callback);\n              }\n            } else {\n              forEach(value, function (property) {\n                update(value, property, callback);\n              });\n            }\n          }\n          return callback.call(source, property, value);\n        };\n\n        // Public: `JSON.parse`. See ES 5.1 section 15.12.2.\n        exports.parse = function (source, callback) {\n          var result, value;\n          Index = 0;\n          Source = \"\" + source;\n          result = get(lex());\n          // If a JSON string contains multiple tokens, it is invalid.\n          if (lex() != \"$\") {\n            abort();\n          }\n          // Reset the parser state.\n          Index = Source = null;\n          return callback && getClass.call(callback) == functionClass ? walk((value = {}, value[\"\"] = result, value), \"\", callback) : result;\n        };\n      }\n    }\n\n    exports[\"runInContext\"] = runInContext;\n    return exports;\n  }\n\n  if (freeExports && !isLoader) {\n    // Export for CommonJS environments.\n    runInContext(root, freeExports);\n  } else {\n    // Export for web browsers and JavaScript engines.\n    var nativeJSON = root.JSON,\n        previousJSON = root[\"JSON3\"],\n        isRestored = false;\n\n    var JSON3 = runInContext(root, (root[\"JSON3\"] = {\n      // Public: Restores the original value of the global `JSON` object and\n      // returns a reference to the `JSON3` object.\n      \"noConflict\": function () {\n        if (!isRestored) {\n          isRestored = true;\n          root.JSON = nativeJSON;\n          root[\"JSON3\"] = previousJSON;\n          nativeJSON = previousJSON = null;\n        }\n        return JSON3;\n      }\n    }));\n\n    root.JSON = {\n      \"parse\": JSON3.parse,\n      \"stringify\": JSON3.stringify\n    };\n  }\n\n  // Export for asynchronous module loaders.\n  if (isLoader) {\n    define(function () {\n      return JSON3;\n    });\n  }\n}).call(this);\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/json3/lib/json3.js\n// module id = 39\n// module chunks = 0","/**\n * Helpers.\n */\n\nvar s = 1000\nvar m = s * 60\nvar h = m * 60\nvar d = h * 24\nvar y = d * 365.25\n\n/**\n * Parse or format the given `val`.\n *\n * Options:\n *\n *  - `long` verbose formatting [false]\n *\n * @param {String|Number} val\n * @param {Object} options\n * @throws {Error} throw an error if val is not a non-empty string or a number\n * @return {String|Number}\n * @api public\n */\n\nmodule.exports = function (val, options) {\n  options = options || {}\n  var type = typeof val\n  if (type === 'string' && val.length > 0) {\n    return parse(val)\n  } else if (type === 'number' && isNaN(val) === false) {\n    return options.long ?\n\t\t\tfmtLong(val) :\n\t\t\tfmtShort(val)\n  }\n  throw new Error('val is not a non-empty string or a valid number. val=' + JSON.stringify(val))\n}\n\n/**\n * Parse the given `str` and return milliseconds.\n *\n * @param {String} str\n * @return {Number}\n * @api private\n */\n\nfunction parse(str) {\n  str = String(str)\n  if (str.length > 10000) {\n    return\n  }\n  var match = /^((?:\\d+)?\\.?\\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|years?|yrs?|y)?$/i.exec(str)\n  if (!match) {\n    return\n  }\n  var n = parseFloat(match[1])\n  var type = (match[2] || 'ms').toLowerCase()\n  switch (type) {\n    case 'years':\n    case 'year':\n    case 'yrs':\n    case 'yr':\n    case 'y':\n      return n * y\n    case 'days':\n    case 'day':\n    case 'd':\n      return n * d\n    case 'hours':\n    case 'hour':\n    case 'hrs':\n    case 'hr':\n    case 'h':\n      return n * h\n    case 'minutes':\n    case 'minute':\n    case 'mins':\n    case 'min':\n    case 'm':\n      return n * m\n    case 'seconds':\n    case 'second':\n    case 'secs':\n    case 'sec':\n    case 's':\n      return n * s\n    case 'milliseconds':\n    case 'millisecond':\n    case 'msecs':\n    case 'msec':\n    case 'ms':\n      return n\n    default:\n      return undefined\n  }\n}\n\n/**\n * Short format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtShort(ms) {\n  if (ms >= d) {\n    return Math.round(ms / d) + 'd'\n  }\n  if (ms >= h) {\n    return Math.round(ms / h) + 'h'\n  }\n  if (ms >= m) {\n    return Math.round(ms / m) + 'm'\n  }\n  if (ms >= s) {\n    return Math.round(ms / s) + 's'\n  }\n  return ms + 'ms'\n}\n\n/**\n * Long format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtLong(ms) {\n  return plural(ms, d, 'day') ||\n    plural(ms, h, 'hour') ||\n    plural(ms, m, 'minute') ||\n    plural(ms, s, 'second') ||\n    ms + ' ms'\n}\n\n/**\n * Pluralization helper.\n */\n\nfunction plural(ms, n, name) {\n  if (ms < n) {\n    return\n  }\n  if (ms < n * 1.5) {\n    return Math.floor(ms / n) + ' ' + name\n  }\n  return Math.ceil(ms / n) + ' ' + name + 's'\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/ms/index.js\n// module id = 40\n// module chunks = 0","/**\r\n * JSON parse.\r\n *\r\n * @see Based on jQuery#parseJSON (MIT) and JSON2\r\n * @api private\r\n */\r\n\r\nvar rvalidchars = /^[\\],:{}\\s]*$/;\r\nvar rvalidescape = /\\\\(?:[\"\\\\\\/bfnrt]|u[0-9a-fA-F]{4})/g;\r\nvar rvalidtokens = /\"[^\"\\\\\\n\\r]*\"|true|false|null|-?\\d+(?:\\.\\d*)?(?:[eE][+\\-]?\\d+)?/g;\r\nvar rvalidbraces = /(?:^|:|,)(?:\\s*\\[)+/g;\r\nvar rtrimLeft = /^\\s+/;\r\nvar rtrimRight = /\\s+$/;\r\n\r\nmodule.exports = function parsejson(data) {\r\n  if ('string' != typeof data || !data) {\r\n    return null;\r\n  }\r\n\r\n  data = data.replace(rtrimLeft, '').replace(rtrimRight, '');\r\n\r\n  // Attempt to parse using the native JSON parser first\r\n  if (global.JSON && JSON.parse) {\r\n    return JSON.parse(data);\r\n  }\r\n\r\n  if (rvalidchars.test(data.replace(rvalidescape, '@')\r\n      .replace(rvalidtokens, ']')\r\n      .replace(rvalidbraces, ''))) {\r\n    return (new Function('return ' + data))();\r\n  }\r\n};\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/parsejson/index.js\n// module id = 41\n// module chunks = 0","// shim for using process in browser\nvar process = module.exports = {};\n\n// cached from whatever global is present so that test runners that stub it\n// don't break things.  But we need to wrap it in a try catch in case it is\n// wrapped in strict mode code which doesn't define any globals.  It's inside a\n// function because try/catches deoptimize in certain engines.\n\nvar cachedSetTimeout;\nvar cachedClearTimeout;\n\nfunction defaultSetTimout() {\n    throw new Error('setTimeout has not been defined');\n}\nfunction defaultClearTimeout () {\n    throw new Error('clearTimeout has not been defined');\n}\n(function () {\n    try {\n        if (typeof setTimeout === 'function') {\n            cachedSetTimeout = setTimeout;\n        } else {\n            cachedSetTimeout = defaultSetTimout;\n        }\n    } catch (e) {\n        cachedSetTimeout = defaultSetTimout;\n    }\n    try {\n        if (typeof clearTimeout === 'function') {\n            cachedClearTimeout = clearTimeout;\n        } else {\n            cachedClearTimeout = defaultClearTimeout;\n        }\n    } catch (e) {\n        cachedClearTimeout = defaultClearTimeout;\n    }\n} ())\nfunction runTimeout(fun) {\n    if (cachedSetTimeout === setTimeout) {\n        //normal enviroments in sane situations\n        return setTimeout(fun, 0);\n    }\n    // if setTimeout wasn't available but was latter defined\n    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {\n        cachedSetTimeout = setTimeout;\n        return setTimeout(fun, 0);\n    }\n    try {\n        // when when somebody has screwed with setTimeout but no I.E. maddness\n        return cachedSetTimeout(fun, 0);\n    } catch(e){\n        try {\n            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally\n            return cachedSetTimeout.call(null, fun, 0);\n        } catch(e){\n            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error\n            return cachedSetTimeout.call(this, fun, 0);\n        }\n    }\n\n\n}\nfunction runClearTimeout(marker) {\n    if (cachedClearTimeout === clearTimeout) {\n        //normal enviroments in sane situations\n        return clearTimeout(marker);\n    }\n    // if clearTimeout wasn't available but was latter defined\n    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {\n        cachedClearTimeout = clearTimeout;\n        return clearTimeout(marker);\n    }\n    try {\n        // when when somebody has screwed with setTimeout but no I.E. maddness\n        return cachedClearTimeout(marker);\n    } catch (e){\n        try {\n            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally\n            return cachedClearTimeout.call(null, marker);\n        } catch (e){\n            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.\n            // Some versions of I.E. have different rules for clearTimeout vs setTimeout\n            return cachedClearTimeout.call(this, marker);\n        }\n    }\n\n\n\n}\nvar queue = [];\nvar draining = false;\nvar currentQueue;\nvar queueIndex = -1;\n\nfunction cleanUpNextTick() {\n    if (!draining || !currentQueue) {\n        return;\n    }\n    draining = false;\n    if (currentQueue.length) {\n        queue = currentQueue.concat(queue);\n    } else {\n        queueIndex = -1;\n    }\n    if (queue.length) {\n        drainQueue();\n    }\n}\n\nfunction drainQueue() {\n    if (draining) {\n        return;\n    }\n    var timeout = runTimeout(cleanUpNextTick);\n    draining = true;\n\n    var len = queue.length;\n    while(len) {\n        currentQueue = queue;\n        queue = [];\n        while (++queueIndex < len) {\n            if (currentQueue) {\n                currentQueue[queueIndex].run();\n            }\n        }\n        queueIndex = -1;\n        len = queue.length;\n    }\n    currentQueue = null;\n    draining = false;\n    runClearTimeout(timeout);\n}\n\nprocess.nextTick = function (fun) {\n    var args = new Array(arguments.length - 1);\n    if (arguments.length > 1) {\n        for (var i = 1; i < arguments.length; i++) {\n            args[i - 1] = arguments[i];\n        }\n    }\n    queue.push(new Item(fun, args));\n    if (queue.length === 1 && !draining) {\n        runTimeout(drainQueue);\n    }\n};\n\n// v8 likes predictible objects\nfunction Item(fun, array) {\n    this.fun = fun;\n    this.array = array;\n}\nItem.prototype.run = function () {\n    this.fun.apply(null, this.array);\n};\nprocess.title = 'browser';\nprocess.browser = true;\nprocess.env = {};\nprocess.argv = [];\nprocess.version = ''; // empty string to avoid regexp issues\nprocess.versions = {};\n\nfunction noop() {}\n\nprocess.on = noop;\nprocess.addListener = noop;\nprocess.once = noop;\nprocess.off = noop;\nprocess.removeListener = noop;\nprocess.removeAllListeners = noop;\nprocess.emit = noop;\n\nprocess.binding = function (name) {\n    throw new Error('process.binding is not supported');\n};\n\nprocess.cwd = function () { return '/' };\nprocess.chdir = function (dir) {\n    throw new Error('process.chdir is not supported');\n};\nprocess.umask = function() { return 0; };\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/process/browser.js\n// module id = 42\n// module chunks = 0","\n/**\n * Module dependencies.\n */\n\nvar url = require('./url');\nvar parser = require('socket.io-parser');\nvar Manager = require('./manager');\nvar debug = require('debug')('socket.io-client');\n\n/**\n * Module exports.\n */\n\nmodule.exports = exports = lookup;\n\n/**\n * Managers cache.\n */\n\nvar cache = exports.managers = {};\n\n/**\n * Looks up an existing `Manager` for multiplexing.\n * If the user summons:\n *\n *   `io('http://localhost/a');`\n *   `io('http://localhost/b');`\n *\n * We reuse the existing instance based on same scheme/port/host,\n * and we initialize sockets for each namespace.\n *\n * @api public\n */\n\nfunction lookup (uri, opts) {\n  if (typeof uri === 'object') {\n    opts = uri;\n    uri = undefined;\n  }\n\n  opts = opts || {};\n\n  var parsed = url(uri);\n  var source = parsed.source;\n  var id = parsed.id;\n  var path = parsed.path;\n  var sameNamespace = cache[id] && path in cache[id].nsps;\n  var newConnection = opts.forceNew || opts['force new connection'] ||\n                      false === opts.multiplex || sameNamespace;\n\n  var io;\n\n  if (newConnection) {\n    debug('ignoring socket cache for %s', source);\n    io = Manager(source, opts);\n  } else {\n    if (!cache[id]) {\n      debug('new io instance for %s', source);\n      cache[id] = Manager(source, opts);\n    }\n    io = cache[id];\n  }\n  if (parsed.query && !opts.query) {\n    opts.query = parsed.query;\n  } else if (opts && 'object' === typeof opts.query) {\n    opts.query = encodeQueryString(opts.query);\n  }\n  return io.socket(parsed.path, opts);\n}\n/**\n *  Helper method to parse query objects to string.\n * @param {object} query\n * @returns {string}\n */\nfunction encodeQueryString (obj) {\n  var str = [];\n  for (var p in obj) {\n    if (obj.hasOwnProperty(p)) {\n      str.push(encodeURIComponent(p) + '=' + encodeURIComponent(obj[p]));\n    }\n  }\n  return str.join('&');\n}\n/**\n * Protocol version.\n *\n * @api public\n */\n\nexports.protocol = parser.protocol;\n\n/**\n * `connect`.\n *\n * @param {String} uri\n * @api public\n */\n\nexports.connect = lookup;\n\n/**\n * Expose constructors for standalone build.\n *\n * @api public\n */\n\nexports.Manager = require('./manager');\nexports.Socket = require('./socket');\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/socket.io-client/lib/index.js\n// module id = 43\n// module chunks = 0","\n/**\n * Module dependencies.\n */\n\nvar parseuri = require('parseuri');\nvar debug = require('debug')('socket.io-client:url');\n\n/**\n * Module exports.\n */\n\nmodule.exports = url;\n\n/**\n * URL parser.\n *\n * @param {String} url\n * @param {Object} An object meant to mimic window.location.\n *                 Defaults to window.location.\n * @api public\n */\n\nfunction url (uri, loc) {\n  var obj = uri;\n\n  // default to window.location\n  loc = loc || global.location;\n  if (null == uri) uri = loc.protocol + '//' + loc.host;\n\n  // relative path support\n  if ('string' === typeof uri) {\n    if ('/' === uri.charAt(0)) {\n      if ('/' === uri.charAt(1)) {\n        uri = loc.protocol + uri;\n      } else {\n        uri = loc.host + uri;\n      }\n    }\n\n    if (!/^(https?|wss?):\\/\\//.test(uri)) {\n      debug('protocol-less url %s', uri);\n      if ('undefined' !== typeof loc) {\n        uri = loc.protocol + '//' + uri;\n      } else {\n        uri = 'https://' + uri;\n      }\n    }\n\n    // parse\n    debug('parse %s', uri);\n    obj = parseuri(uri);\n  }\n\n  // make sure we treat `localhost:80` and `localhost` equally\n  if (!obj.port) {\n    if (/^(http|ws)$/.test(obj.protocol)) {\n      obj.port = '80';\n    } else if (/^(http|ws)s$/.test(obj.protocol)) {\n      obj.port = '443';\n    }\n  }\n\n  obj.path = obj.path || '/';\n\n  var ipv6 = obj.host.indexOf(':') !== -1;\n  var host = ipv6 ? '[' + obj.host + ']' : obj.host;\n\n  // define unique id\n  obj.id = obj.protocol + '://' + host + ':' + obj.port;\n  // define href\n  obj.href = obj.protocol + '://' + host + (loc && loc.port === obj.port ? '' : (':' + obj.port));\n\n  return obj;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/socket.io-client/lib/url.js\n// module id = 44\n// module chunks = 0","/*global Blob,File*/\n\n/**\n * Module requirements\n */\n\nvar isArray = require('isarray');\nvar isBuf = require('./is-buffer');\n\n/**\n * Replaces every Buffer | ArrayBuffer in packet with a numbered placeholder.\n * Anything with blobs or files should be fed through removeBlobs before coming\n * here.\n *\n * @param {Object} packet - socket.io event packet\n * @return {Object} with deconstructed packet and list of buffers\n * @api public\n */\n\nexports.deconstructPacket = function(packet){\n  var buffers = [];\n  var packetData = packet.data;\n\n  function _deconstructPacket(data) {\n    if (!data) return data;\n\n    if (isBuf(data)) {\n      var placeholder = { _placeholder: true, num: buffers.length };\n      buffers.push(data);\n      return placeholder;\n    } else if (isArray(data)) {\n      var newData = new Array(data.length);\n      for (var i = 0; i < data.length; i++) {\n        newData[i] = _deconstructPacket(data[i]);\n      }\n      return newData;\n    } else if ('object' == typeof data && !(data instanceof Date)) {\n      var newData = {};\n      for (var key in data) {\n        newData[key] = _deconstructPacket(data[key]);\n      }\n      return newData;\n    }\n    return data;\n  }\n\n  var pack = packet;\n  pack.data = _deconstructPacket(packetData);\n  pack.attachments = buffers.length; // number of binary 'attachments'\n  return {packet: pack, buffers: buffers};\n};\n\n/**\n * Reconstructs a binary packet from its placeholder packet and buffers\n *\n * @param {Object} packet - event packet with placeholders\n * @param {Array} buffers - binary buffers to put in placeholder positions\n * @return {Object} reconstructed packet\n * @api public\n */\n\nexports.reconstructPacket = function(packet, buffers) {\n  var curPlaceHolder = 0;\n\n  function _reconstructPacket(data) {\n    if (data && data._placeholder) {\n      var buf = buffers[data.num]; // appropriate buffer (should be natural order anyway)\n      return buf;\n    } else if (isArray(data)) {\n      for (var i = 0; i < data.length; i++) {\n        data[i] = _reconstructPacket(data[i]);\n      }\n      return data;\n    } else if (data && 'object' == typeof data) {\n      for (var key in data) {\n        data[key] = _reconstructPacket(data[key]);\n      }\n      return data;\n    }\n    return data;\n  }\n\n  packet.data = _reconstructPacket(packet.data);\n  packet.attachments = undefined; // no longer useful\n  return packet;\n};\n\n/**\n * Asynchronously removes Blobs or Files from data via\n * FileReader's readAsArrayBuffer method. Used before encoding\n * data as msgpack. Calls callback with the blobless data.\n *\n * @param {Object} data\n * @param {Function} callback\n * @api private\n */\n\nexports.removeBlobs = function(data, callback) {\n  function _removeBlobs(obj, curKey, containingObject) {\n    if (!obj) return obj;\n\n    // convert any blob\n    if ((global.Blob && obj instanceof Blob) ||\n        (global.File && obj instanceof File)) {\n      pendingBlobs++;\n\n      // async filereader\n      var fileReader = new FileReader();\n      fileReader.onload = function() { // this.result == arraybuffer\n        if (containingObject) {\n          containingObject[curKey] = this.result;\n        }\n        else {\n          bloblessData = this.result;\n        }\n\n        // if nothing pending its callback time\n        if(! --pendingBlobs) {\n          callback(bloblessData);\n        }\n      };\n\n      fileReader.readAsArrayBuffer(obj); // blob -> arraybuffer\n    } else if (isArray(obj)) { // handle array\n      for (var i = 0; i < obj.length; i++) {\n        _removeBlobs(obj[i], i, obj);\n      }\n    } else if (obj && 'object' == typeof obj && !isBuf(obj)) { // and object\n      for (var key in obj) {\n        _removeBlobs(obj[key], key, obj);\n      }\n    }\n  }\n\n  var pendingBlobs = 0;\n  var bloblessData = data;\n  _removeBlobs(bloblessData);\n  if (!pendingBlobs) {\n    callback(bloblessData);\n  }\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/socket.io-parser/binary.js\n// module id = 45\n// module chunks = 0","\n/**\n * Expose `Emitter`.\n */\n\nmodule.exports = Emitter;\n\n/**\n * Initialize a new `Emitter`.\n *\n * @api public\n */\n\nfunction Emitter(obj) {\n  if (obj) return mixin(obj);\n};\n\n/**\n * Mixin the emitter properties.\n *\n * @param {Object} obj\n * @return {Object}\n * @api private\n */\n\nfunction mixin(obj) {\n  for (var key in Emitter.prototype) {\n    obj[key] = Emitter.prototype[key];\n  }\n  return obj;\n}\n\n/**\n * Listen on the given `event` with `fn`.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.on =\nEmitter.prototype.addEventListener = function(event, fn){\n  this._callbacks = this._callbacks || {};\n  (this._callbacks[event] = this._callbacks[event] || [])\n    .push(fn);\n  return this;\n};\n\n/**\n * Adds an `event` listener that will be invoked a single\n * time then automatically removed.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.once = function(event, fn){\n  var self = this;\n  this._callbacks = this._callbacks || {};\n\n  function on() {\n    self.off(event, on);\n    fn.apply(this, arguments);\n  }\n\n  on.fn = fn;\n  this.on(event, on);\n  return this;\n};\n\n/**\n * Remove the given callback for `event` or all\n * registered callbacks.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.off =\nEmitter.prototype.removeListener =\nEmitter.prototype.removeAllListeners =\nEmitter.prototype.removeEventListener = function(event, fn){\n  this._callbacks = this._callbacks || {};\n\n  // all\n  if (0 == arguments.length) {\n    this._callbacks = {};\n    return this;\n  }\n\n  // specific event\n  var callbacks = this._callbacks[event];\n  if (!callbacks) return this;\n\n  // remove all handlers\n  if (1 == arguments.length) {\n    delete this._callbacks[event];\n    return this;\n  }\n\n  // remove specific handler\n  var cb;\n  for (var i = 0; i < callbacks.length; i++) {\n    cb = callbacks[i];\n    if (cb === fn || cb.fn === fn) {\n      callbacks.splice(i, 1);\n      break;\n    }\n  }\n  return this;\n};\n\n/**\n * Emit `event` with the given args.\n *\n * @param {String} event\n * @param {Mixed} ...\n * @return {Emitter}\n */\n\nEmitter.prototype.emit = function(event){\n  this._callbacks = this._callbacks || {};\n  var args = [].slice.call(arguments, 1)\n    , callbacks = this._callbacks[event];\n\n  if (callbacks) {\n    callbacks = callbacks.slice(0);\n    for (var i = 0, len = callbacks.length; i < len; ++i) {\n      callbacks[i].apply(this, args);\n    }\n  }\n\n  return this;\n};\n\n/**\n * Return array of callbacks for `event`.\n *\n * @param {String} event\n * @return {Array}\n * @api public\n */\n\nEmitter.prototype.listeners = function(event){\n  this._callbacks = this._callbacks || {};\n  return this._callbacks[event] || [];\n};\n\n/**\n * Check if this emitter has `event` handlers.\n *\n * @param {String} event\n * @return {Boolean}\n * @api public\n */\n\nEmitter.prototype.hasListeners = function(event){\n  return !! this.listeners(event).length;\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/socket.io-parser/~/component-emitter/index.js\n// module id = 46\n// module chunks = 0","\n/**\n * This is the web browser implementation of `debug()`.\n *\n * Expose `debug()` as the module.\n */\n\nexports = module.exports = require('./debug');\nexports.log = log;\nexports.formatArgs = formatArgs;\nexports.save = save;\nexports.load = load;\nexports.useColors = useColors;\nexports.storage = 'undefined' != typeof chrome\n               && 'undefined' != typeof chrome.storage\n                  ? chrome.storage.local\n                  : localstorage();\n\n/**\n * Colors.\n */\n\nexports.colors = [\n  'lightseagreen',\n  'forestgreen',\n  'goldenrod',\n  'dodgerblue',\n  'darkorchid',\n  'crimson'\n];\n\n/**\n * Currently only WebKit-based Web Inspectors, Firefox >= v31,\n * and the Firebug extension (any Firefox version) are known\n * to support \"%c\" CSS customizations.\n *\n * TODO: add a `localStorage` variable to explicitly enable/disable colors\n */\n\nfunction useColors() {\n  // is webkit? http://stackoverflow.com/a/16459606/376773\n  return ('WebkitAppearance' in document.documentElement.style) ||\n    // is firebug? http://stackoverflow.com/a/398120/376773\n    (window.console && (console.firebug || (console.exception && console.table))) ||\n    // is firefox >= v31?\n    // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages\n    (navigator.userAgent.toLowerCase().match(/firefox\\/(\\d+)/) && parseInt(RegExp.$1, 10) >= 31);\n}\n\n/**\n * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.\n */\n\nexports.formatters.j = function(v) {\n  return JSON.stringify(v);\n};\n\n\n/**\n * Colorize log arguments if enabled.\n *\n * @api public\n */\n\nfunction formatArgs() {\n  var args = arguments;\n  var useColors = this.useColors;\n\n  args[0] = (useColors ? '%c' : '')\n    + this.namespace\n    + (useColors ? ' %c' : ' ')\n    + args[0]\n    + (useColors ? '%c ' : ' ')\n    + '+' + exports.humanize(this.diff);\n\n  if (!useColors) return args;\n\n  var c = 'color: ' + this.color;\n  args = [args[0], c, 'color: inherit'].concat(Array.prototype.slice.call(args, 1));\n\n  // the final \"%c\" is somewhat tricky, because there could be other\n  // arguments passed either before or after the %c, so we need to\n  // figure out the correct index to insert the CSS into\n  var index = 0;\n  var lastC = 0;\n  args[0].replace(/%[a-z%]/g, function(match) {\n    if ('%%' === match) return;\n    index++;\n    if ('%c' === match) {\n      // we only are interested in the *last* %c\n      // (the user may have provided their own)\n      lastC = index;\n    }\n  });\n\n  args.splice(lastC, 0, c);\n  return args;\n}\n\n/**\n * Invokes `console.log()` when available.\n * No-op when `console.log` is not a \"function\".\n *\n * @api public\n */\n\nfunction log() {\n  // this hackery is required for IE8/9, where\n  // the `console.log` function doesn't have 'apply'\n  return 'object' === typeof console\n    && console.log\n    && Function.prototype.apply.call(console.log, console, arguments);\n}\n\n/**\n * Save `namespaces`.\n *\n * @param {String} namespaces\n * @api private\n */\n\nfunction save(namespaces) {\n  try {\n    if (null == namespaces) {\n      exports.storage.removeItem('debug');\n    } else {\n      exports.storage.debug = namespaces;\n    }\n  } catch(e) {}\n}\n\n/**\n * Load `namespaces`.\n *\n * @return {String} returns the previously persisted debug modes\n * @api private\n */\n\nfunction load() {\n  var r;\n  try {\n    r = exports.storage.debug;\n  } catch(e) {}\n  return r;\n}\n\n/**\n * Enable namespaces listed in `localStorage.debug` initially.\n */\n\nexports.enable(load());\n\n/**\n * Localstorage attempts to return the localstorage.\n *\n * This is necessary because safari throws\n * when a user disables cookies/localstorage\n * and you attempt to access it.\n *\n * @return {LocalStorage}\n * @api private\n */\n\nfunction localstorage(){\n  try {\n    return window.localStorage;\n  } catch (e) {}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/socket.io-parser/~/debug/browser.js\n// module id = 47\n// module chunks = 0","\n/**\n * This is the common logic for both the Node.js and web browser\n * implementations of `debug()`.\n *\n * Expose `debug()` as the module.\n */\n\nexports = module.exports = debug;\nexports.coerce = coerce;\nexports.disable = disable;\nexports.enable = enable;\nexports.enabled = enabled;\nexports.humanize = require('ms');\n\n/**\n * The currently active debug mode names, and names to skip.\n */\n\nexports.names = [];\nexports.skips = [];\n\n/**\n * Map of special \"%n\" handling functions, for the debug \"format\" argument.\n *\n * Valid key names are a single, lowercased letter, i.e. \"n\".\n */\n\nexports.formatters = {};\n\n/**\n * Previously assigned color.\n */\n\nvar prevColor = 0;\n\n/**\n * Previous log timestamp.\n */\n\nvar prevTime;\n\n/**\n * Select a color.\n *\n * @return {Number}\n * @api private\n */\n\nfunction selectColor() {\n  return exports.colors[prevColor++ % exports.colors.length];\n}\n\n/**\n * Create a debugger with the given `namespace`.\n *\n * @param {String} namespace\n * @return {Function}\n * @api public\n */\n\nfunction debug(namespace) {\n\n  // define the `disabled` version\n  function disabled() {\n  }\n  disabled.enabled = false;\n\n  // define the `enabled` version\n  function enabled() {\n\n    var self = enabled;\n\n    // set `diff` timestamp\n    var curr = +new Date();\n    var ms = curr - (prevTime || curr);\n    self.diff = ms;\n    self.prev = prevTime;\n    self.curr = curr;\n    prevTime = curr;\n\n    // add the `color` if not set\n    if (null == self.useColors) self.useColors = exports.useColors();\n    if (null == self.color && self.useColors) self.color = selectColor();\n\n    var args = Array.prototype.slice.call(arguments);\n\n    args[0] = exports.coerce(args[0]);\n\n    if ('string' !== typeof args[0]) {\n      // anything else let's inspect with %o\n      args = ['%o'].concat(args);\n    }\n\n    // apply any `formatters` transformations\n    var index = 0;\n    args[0] = args[0].replace(/%([a-z%])/g, function(match, format) {\n      // if we encounter an escaped % then don't increase the array index\n      if (match === '%%') return match;\n      index++;\n      var formatter = exports.formatters[format];\n      if ('function' === typeof formatter) {\n        var val = args[index];\n        match = formatter.call(self, val);\n\n        // now we need to remove `args[index]` since it's inlined in the `format`\n        args.splice(index, 1);\n        index--;\n      }\n      return match;\n    });\n\n    if ('function' === typeof exports.formatArgs) {\n      args = exports.formatArgs.apply(self, args);\n    }\n    var logFn = enabled.log || exports.log || console.log.bind(console);\n    logFn.apply(self, args);\n  }\n  enabled.enabled = true;\n\n  var fn = exports.enabled(namespace) ? enabled : disabled;\n\n  fn.namespace = namespace;\n\n  return fn;\n}\n\n/**\n * Enables a debug mode by namespaces. This can include modes\n * separated by a colon and wildcards.\n *\n * @param {String} namespaces\n * @api public\n */\n\nfunction enable(namespaces) {\n  exports.save(namespaces);\n\n  var split = (namespaces || '').split(/[\\s,]+/);\n  var len = split.length;\n\n  for (var i = 0; i < len; i++) {\n    if (!split[i]) continue; // ignore empty strings\n    namespaces = split[i].replace(/\\*/g, '.*?');\n    if (namespaces[0] === '-') {\n      exports.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));\n    } else {\n      exports.names.push(new RegExp('^' + namespaces + '$'));\n    }\n  }\n}\n\n/**\n * Disable debug output.\n *\n * @api public\n */\n\nfunction disable() {\n  exports.enable('');\n}\n\n/**\n * Returns true if the given mode name is enabled, false otherwise.\n *\n * @param {String} name\n * @return {Boolean}\n * @api public\n */\n\nfunction enabled(name) {\n  var i, len;\n  for (i = 0, len = exports.skips.length; i < len; i++) {\n    if (exports.skips[i].test(name)) {\n      return false;\n    }\n  }\n  for (i = 0, len = exports.names.length; i < len; i++) {\n    if (exports.names[i].test(name)) {\n      return true;\n    }\n  }\n  return false;\n}\n\n/**\n * Coerce `val`.\n *\n * @param {Mixed} val\n * @return {Mixed}\n * @api private\n */\n\nfunction coerce(val) {\n  if (val instanceof Error) return val.stack || val.message;\n  return val;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/socket.io-parser/~/debug/debug.js\n// module id = 48\n// module chunks = 0","/**\n * Helpers.\n */\n\nvar s = 1000;\nvar m = s * 60;\nvar h = m * 60;\nvar d = h * 24;\nvar y = d * 365.25;\n\n/**\n * Parse or format the given `val`.\n *\n * Options:\n *\n *  - `long` verbose formatting [false]\n *\n * @param {String|Number} val\n * @param {Object} options\n * @return {String|Number}\n * @api public\n */\n\nmodule.exports = function(val, options){\n  options = options || {};\n  if ('string' == typeof val) return parse(val);\n  return options.long\n    ? long(val)\n    : short(val);\n};\n\n/**\n * Parse the given `str` and return milliseconds.\n *\n * @param {String} str\n * @return {Number}\n * @api private\n */\n\nfunction parse(str) {\n  str = '' + str;\n  if (str.length > 10000) return;\n  var match = /^((?:\\d+)?\\.?\\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|years?|yrs?|y)?$/i.exec(str);\n  if (!match) return;\n  var n = parseFloat(match[1]);\n  var type = (match[2] || 'ms').toLowerCase();\n  switch (type) {\n    case 'years':\n    case 'year':\n    case 'yrs':\n    case 'yr':\n    case 'y':\n      return n * y;\n    case 'days':\n    case 'day':\n    case 'd':\n      return n * d;\n    case 'hours':\n    case 'hour':\n    case 'hrs':\n    case 'hr':\n    case 'h':\n      return n * h;\n    case 'minutes':\n    case 'minute':\n    case 'mins':\n    case 'min':\n    case 'm':\n      return n * m;\n    case 'seconds':\n    case 'second':\n    case 'secs':\n    case 'sec':\n    case 's':\n      return n * s;\n    case 'milliseconds':\n    case 'millisecond':\n    case 'msecs':\n    case 'msec':\n    case 'ms':\n      return n;\n  }\n}\n\n/**\n * Short format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction short(ms) {\n  if (ms >= d) return Math.round(ms / d) + 'd';\n  if (ms >= h) return Math.round(ms / h) + 'h';\n  if (ms >= m) return Math.round(ms / m) + 'm';\n  if (ms >= s) return Math.round(ms / s) + 's';\n  return ms + 'ms';\n}\n\n/**\n * Long format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction long(ms) {\n  return plural(ms, d, 'day')\n    || plural(ms, h, 'hour')\n    || plural(ms, m, 'minute')\n    || plural(ms, s, 'second')\n    || ms + ' ms';\n}\n\n/**\n * Pluralization helper.\n */\n\nfunction plural(ms, n, name) {\n  if (ms < n) return;\n  if (ms < n * 1.5) return Math.floor(ms / n) + ' ' + name;\n  return Math.ceil(ms / n) + ' ' + name + 's';\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/socket.io-parser/~/ms/index.js\n// module id = 49\n// module chunks = 0","module.exports = toArray\n\nfunction toArray(list, index) {\n    var array = []\n\n    index = index || 0\n\n    for (var i = index || 0; i < list.length; i++) {\n        array[i - index] = list[i]\n    }\n\n    return array\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/to-array/index.js\n// module id = 50\n// module chunks = 0","module.exports = __webpack_amd_options__;\r\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// (webpack)/buildin/amd-options.js\n// module id = 51\n// module chunks = 0","/*! https://mths.be/wtf8 v1.0.0 by @mathias */\n;(function(root) {\n\n\t// Detect free variables `exports`\n\tvar freeExports = typeof exports == 'object' && exports;\n\n\t// Detect free variable `module`\n\tvar freeModule = typeof module == 'object' && module &&\n\t\tmodule.exports == freeExports && module;\n\n\t// Detect free variable `global`, from Node.js or Browserified code,\n\t// and use it as `root`\n\tvar freeGlobal = typeof global == 'object' && global;\n\tif (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal) {\n\t\troot = freeGlobal;\n\t}\n\n\t/*--------------------------------------------------------------------------*/\n\n\tvar stringFromCharCode = String.fromCharCode;\n\n\t// Taken from https://mths.be/punycode\n\tfunction ucs2decode(string) {\n\t\tvar output = [];\n\t\tvar counter = 0;\n\t\tvar length = string.length;\n\t\tvar value;\n\t\tvar extra;\n\t\twhile (counter < length) {\n\t\t\tvalue = string.charCodeAt(counter++);\n\t\t\tif (value >= 0xD800 && value <= 0xDBFF && counter < length) {\n\t\t\t\t// high surrogate, and there is a next character\n\t\t\t\textra = string.charCodeAt(counter++);\n\t\t\t\tif ((extra & 0xFC00) == 0xDC00) { // low surrogate\n\t\t\t\t\toutput.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);\n\t\t\t\t} else {\n\t\t\t\t\t// unmatched surrogate; only append this code unit, in case the next\n\t\t\t\t\t// code unit is the high surrogate of a surrogate pair\n\t\t\t\t\toutput.push(value);\n\t\t\t\t\tcounter--;\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\toutput.push(value);\n\t\t\t}\n\t\t}\n\t\treturn output;\n\t}\n\n\t// Taken from https://mths.be/punycode\n\tfunction ucs2encode(array) {\n\t\tvar length = array.length;\n\t\tvar index = -1;\n\t\tvar value;\n\t\tvar output = '';\n\t\twhile (++index < length) {\n\t\t\tvalue = array[index];\n\t\t\tif (value > 0xFFFF) {\n\t\t\t\tvalue -= 0x10000;\n\t\t\t\toutput += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);\n\t\t\t\tvalue = 0xDC00 | value & 0x3FF;\n\t\t\t}\n\t\t\toutput += stringFromCharCode(value);\n\t\t}\n\t\treturn output;\n\t}\n\n\t/*--------------------------------------------------------------------------*/\n\n\tfunction createByte(codePoint, shift) {\n\t\treturn stringFromCharCode(((codePoint >> shift) & 0x3F) | 0x80);\n\t}\n\n\tfunction encodeCodePoint(codePoint) {\n\t\tif ((codePoint & 0xFFFFFF80) == 0) { // 1-byte sequence\n\t\t\treturn stringFromCharCode(codePoint);\n\t\t}\n\t\tvar symbol = '';\n\t\tif ((codePoint & 0xFFFFF800) == 0) { // 2-byte sequence\n\t\t\tsymbol = stringFromCharCode(((codePoint >> 6) & 0x1F) | 0xC0);\n\t\t}\n\t\telse if ((codePoint & 0xFFFF0000) == 0) { // 3-byte sequence\n\t\t\tsymbol = stringFromCharCode(((codePoint >> 12) & 0x0F) | 0xE0);\n\t\t\tsymbol += createByte(codePoint, 6);\n\t\t}\n\t\telse if ((codePoint & 0xFFE00000) == 0) { // 4-byte sequence\n\t\t\tsymbol = stringFromCharCode(((codePoint >> 18) & 0x07) | 0xF0);\n\t\t\tsymbol += createByte(codePoint, 12);\n\t\t\tsymbol += createByte(codePoint, 6);\n\t\t}\n\t\tsymbol += stringFromCharCode((codePoint & 0x3F) | 0x80);\n\t\treturn symbol;\n\t}\n\n\tfunction wtf8encode(string) {\n\t\tvar codePoints = ucs2decode(string);\n\t\tvar length = codePoints.length;\n\t\tvar index = -1;\n\t\tvar codePoint;\n\t\tvar byteString = '';\n\t\twhile (++index < length) {\n\t\t\tcodePoint = codePoints[index];\n\t\t\tbyteString += encodeCodePoint(codePoint);\n\t\t}\n\t\treturn byteString;\n\t}\n\n\t/*--------------------------------------------------------------------------*/\n\n\tfunction readContinuationByte() {\n\t\tif (byteIndex >= byteCount) {\n\t\t\tthrow Error('Invalid byte index');\n\t\t}\n\n\t\tvar continuationByte = byteArray[byteIndex] & 0xFF;\n\t\tbyteIndex++;\n\n\t\tif ((continuationByte & 0xC0) == 0x80) {\n\t\t\treturn continuationByte & 0x3F;\n\t\t}\n\n\t\t// If we end up here, it’s not a continuation byte.\n\t\tthrow Error('Invalid continuation byte');\n\t}\n\n\tfunction decodeSymbol() {\n\t\tvar byte1;\n\t\tvar byte2;\n\t\tvar byte3;\n\t\tvar byte4;\n\t\tvar codePoint;\n\n\t\tif (byteIndex > byteCount) {\n\t\t\tthrow Error('Invalid byte index');\n\t\t}\n\n\t\tif (byteIndex == byteCount) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Read the first byte.\n\t\tbyte1 = byteArray[byteIndex] & 0xFF;\n\t\tbyteIndex++;\n\n\t\t// 1-byte sequence (no continuation bytes)\n\t\tif ((byte1 & 0x80) == 0) {\n\t\t\treturn byte1;\n\t\t}\n\n\t\t// 2-byte sequence\n\t\tif ((byte1 & 0xE0) == 0xC0) {\n\t\t\tvar byte2 = readContinuationByte();\n\t\t\tcodePoint = ((byte1 & 0x1F) << 6) | byte2;\n\t\t\tif (codePoint >= 0x80) {\n\t\t\t\treturn codePoint;\n\t\t\t} else {\n\t\t\t\tthrow Error('Invalid continuation byte');\n\t\t\t}\n\t\t}\n\n\t\t// 3-byte sequence (may include unpaired surrogates)\n\t\tif ((byte1 & 0xF0) == 0xE0) {\n\t\t\tbyte2 = readContinuationByte();\n\t\t\tbyte3 = readContinuationByte();\n\t\t\tcodePoint = ((byte1 & 0x0F) << 12) | (byte2 << 6) | byte3;\n\t\t\tif (codePoint >= 0x0800) {\n\t\t\t\treturn codePoint;\n\t\t\t} else {\n\t\t\t\tthrow Error('Invalid continuation byte');\n\t\t\t}\n\t\t}\n\n\t\t// 4-byte sequence\n\t\tif ((byte1 & 0xF8) == 0xF0) {\n\t\t\tbyte2 = readContinuationByte();\n\t\t\tbyte3 = readContinuationByte();\n\t\t\tbyte4 = readContinuationByte();\n\t\t\tcodePoint = ((byte1 & 0x0F) << 0x12) | (byte2 << 0x0C) |\n\t\t\t\t(byte3 << 0x06) | byte4;\n\t\t\tif (codePoint >= 0x010000 && codePoint <= 0x10FFFF) {\n\t\t\t\treturn codePoint;\n\t\t\t}\n\t\t}\n\n\t\tthrow Error('Invalid WTF-8 detected');\n\t}\n\n\tvar byteArray;\n\tvar byteCount;\n\tvar byteIndex;\n\tfunction wtf8decode(byteString) {\n\t\tbyteArray = ucs2decode(byteString);\n\t\tbyteCount = byteArray.length;\n\t\tbyteIndex = 0;\n\t\tvar codePoints = [];\n\t\tvar tmp;\n\t\twhile ((tmp = decodeSymbol()) !== false) {\n\t\t\tcodePoints.push(tmp);\n\t\t}\n\t\treturn ucs2encode(codePoints);\n\t}\n\n\t/*--------------------------------------------------------------------------*/\n\n\tvar wtf8 = {\n\t\t'version': '1.0.0',\n\t\t'encode': wtf8encode,\n\t\t'decode': wtf8decode\n\t};\n\n\t// Some AMD build optimizers, like r.js, check for specific condition patterns\n\t// like the following:\n\tif (\n\t\ttypeof define == 'function' &&\n\t\ttypeof define.amd == 'object' &&\n\t\tdefine.amd\n\t) {\n\t\tdefine(function() {\n\t\t\treturn wtf8;\n\t\t});\n\t}\telse if (freeExports && !freeExports.nodeType) {\n\t\tif (freeModule) { // in Node.js or RingoJS v0.8.0+\n\t\t\tfreeModule.exports = wtf8;\n\t\t} else { // in Narwhal or RingoJS v0.7.0-\n\t\t\tvar object = {};\n\t\t\tvar hasOwnProperty = object.hasOwnProperty;\n\t\t\tfor (var key in wtf8) {\n\t\t\t\thasOwnProperty.call(wtf8, key) && (freeExports[key] = wtf8[key]);\n\t\t\t}\n\t\t}\n\t} else { // in Rhino or a web browser\n\t\troot.wtf8 = wtf8;\n\t}\n\n}(this));\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/wtf-8/wtf-8.js\n// module id = 52\n// module chunks = 0","/* (ignored) */\n\n\n//////////////////\n// WEBPACK FOOTER\n// ws (ignored)\n// module id = 53\n// module chunks = 0"],"sourceRoot":""}
\ No newline at end of file
diff --git a/webroot/assets/vue.js b/webroot/assets/vue.js
new file mode 100644
index 0000000..838cf92
--- /dev/null
+++ b/webroot/assets/vue.js
@@ -0,0 +1,11907 @@
+/*!
+ * Vue.js v2.6.7
+ * (c) 2014-2019 Evan You
+ * Released under the MIT License.
+ */
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+  typeof define === 'function' && define.amd ? define(factory) :
+  (global = global || self, global.Vue = factory());
+}(this, function () { 'use strict';
+
+  /*  */
+
+  var emptyObject = Object.freeze({});
+
+  // These helpers produce better VM code in JS engines due to their
+  // explicitness and function inlining.
+  function isUndef (v) {
+    return v === undefined || v === null
+  }
+
+  function isDef (v) {
+    return v !== undefined && v !== null
+  }
+
+  function isTrue (v) {
+    return v === true
+  }
+
+  function isFalse (v) {
+    return v === false
+  }
+
+  /**
+   * Check if value is primitive.
+   */
+  function isPrimitive (value) {
+    return (
+      typeof value === 'string' ||
+      typeof value === 'number' ||
+      // $flow-disable-line
+      typeof value === 'symbol' ||
+      typeof value === 'boolean'
+    )
+  }
+
+  /**
+   * Quick object check - this is primarily used to tell
+   * Objects from primitive values when we know the value
+   * is a JSON-compliant type.
+   */
+  function isObject (obj) {
+    return obj !== null && typeof obj === 'object'
+  }
+
+  /**
+   * Get the raw type string of a value, e.g., [object Object].
+   */
+  var _toString = Object.prototype.toString;
+
+  function toRawType (value) {
+    return _toString.call(value).slice(8, -1)
+  }
+
+  /**
+   * Strict object type check. Only returns true
+   * for plain JavaScript objects.
+   */
+  function isPlainObject (obj) {
+    return _toString.call(obj) === '[object Object]'
+  }
+
+  function isRegExp (v) {
+    return _toString.call(v) === '[object RegExp]'
+  }
+
+  /**
+   * Check if val is a valid array index.
+   */
+  function isValidArrayIndex (val) {
+    var n = parseFloat(String(val));
+    return n >= 0 && Math.floor(n) === n && isFinite(val)
+  }
+
+  function isPromise (val) {
+    return (
+      isDef(val) &&
+      typeof val.then === 'function' &&
+      typeof val.catch === 'function'
+    )
+  }
+
+  /**
+   * Convert a value to a string that is actually rendered.
+   */
+  function toString (val) {
+    return val == null
+      ? ''
+      : Array.isArray(val) || (isPlainObject(val) && val.toString === _toString)
+        ? JSON.stringify(val, null, 2)
+        : String(val)
+  }
+
+  /**
+   * Convert an input value to a number for persistence.
+   * If the conversion fails, return original string.
+   */
+  function toNumber (val) {
+    var n = parseFloat(val);
+    return isNaN(n) ? val : n
+  }
+
+  /**
+   * Make a map and return a function for checking if a key
+   * is in that map.
+   */
+  function makeMap (
+    str,
+    expectsLowerCase
+  ) {
+    var map = Object.create(null);
+    var list = str.split(',');
+    for (var i = 0; i < list.length; i++) {
+      map[list[i]] = true;
+    }
+    return expectsLowerCase
+      ? function (val) { return map[val.toLowerCase()]; }
+      : function (val) { return map[val]; }
+  }
+
+  /**
+   * Check if a tag is a built-in tag.
+   */
+  var isBuiltInTag = makeMap('slot,component', true);
+
+  /**
+   * Check if an attribute is a reserved attribute.
+   */
+  var isReservedAttribute = makeMap('key,ref,slot,slot-scope,is');
+
+  /**
+   * Remove an item from an array.
+   */
+  function remove (arr, item) {
+    if (arr.length) {
+      var index = arr.indexOf(item);
+      if (index > -1) {
+        return arr.splice(index, 1)
+      }
+    }
+  }
+
+  /**
+   * Check whether an object has the property.
+   */
+  var hasOwnProperty = Object.prototype.hasOwnProperty;
+  function hasOwn (obj, key) {
+    return hasOwnProperty.call(obj, key)
+  }
+
+  /**
+   * Create a cached version of a pure function.
+   */
+  function cached (fn) {
+    var cache = Object.create(null);
+    return (function cachedFn (str) {
+      var hit = cache[str];
+      return hit || (cache[str] = fn(str))
+    })
+  }
+
+  /**
+   * Camelize a hyphen-delimited string.
+   */
+  var camelizeRE = /-(\w)/g;
+  var camelize = cached(function (str) {
+    return str.replace(camelizeRE, function (_, c) { return c ? c.toUpperCase() : ''; })
+  });
+
+  /**
+   * Capitalize a string.
+   */
+  var capitalize = cached(function (str) {
+    return str.charAt(0).toUpperCase() + str.slice(1)
+  });
+
+  /**
+   * Hyphenate a camelCase string.
+   */
+  var hyphenateRE = /\B([A-Z])/g;
+  var hyphenate = cached(function (str) {
+    return str.replace(hyphenateRE, '-$1').toLowerCase()
+  });
+
+  /**
+   * Simple bind polyfill for environments that do not support it,
+   * e.g., PhantomJS 1.x. Technically, we don't need this anymore
+   * since native bind is now performant enough in most browsers.
+   * But removing it would mean breaking code that was able to run in
+   * PhantomJS 1.x, so this must be kept for backward compatibility.
+   */
+
+  /* istanbul ignore next */
+  function polyfillBind (fn, ctx) {
+    function boundFn (a) {
+      var l = arguments.length;
+      return l
+        ? l > 1
+          ? fn.apply(ctx, arguments)
+          : fn.call(ctx, a)
+        : fn.call(ctx)
+    }
+
+    boundFn._length = fn.length;
+    return boundFn
+  }
+
+  function nativeBind (fn, ctx) {
+    return fn.bind(ctx)
+  }
+
+  var bind = Function.prototype.bind
+    ? nativeBind
+    : polyfillBind;
+
+  /**
+   * Convert an Array-like object to a real Array.
+   */
+  function toArray (list, start) {
+    start = start || 0;
+    var i = list.length - start;
+    var ret = new Array(i);
+    while (i--) {
+      ret[i] = list[i + start];
+    }
+    return ret
+  }
+
+  /**
+   * Mix properties into target object.
+   */
+  function extend (to, _from) {
+    for (var key in _from) {
+      to[key] = _from[key];
+    }
+    return to
+  }
+
+  /**
+   * Merge an Array of Objects into a single Object.
+   */
+  function toObject (arr) {
+    var res = {};
+    for (var i = 0; i < arr.length; i++) {
+      if (arr[i]) {
+        extend(res, arr[i]);
+      }
+    }
+    return res
+  }
+
+  /* eslint-disable no-unused-vars */
+
+  /**
+   * Perform no operation.
+   * Stubbing args to make Flow happy without leaving useless transpiled code
+   * with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/).
+   */
+  function noop (a, b, c) {}
+
+  /**
+   * Always return false.
+   */
+  var no = function (a, b, c) { return false; };
+
+  /* eslint-enable no-unused-vars */
+
+  /**
+   * Return the same value.
+   */
+  var identity = function (_) { return _; };
+
+  /**
+   * Generate a string containing static keys from compiler modules.
+   */
+  function genStaticKeys (modules) {
+    return modules.reduce(function (keys, m) {
+      return keys.concat(m.staticKeys || [])
+    }, []).join(',')
+  }
+
+  /**
+   * Check if two values are loosely equal - that is,
+   * if they are plain objects, do they have the same shape?
+   */
+  function looseEqual (a, b) {
+    if (a === b) { return true }
+    var isObjectA = isObject(a);
+    var isObjectB = isObject(b);
+    if (isObjectA && isObjectB) {
+      try {
+        var isArrayA = Array.isArray(a);
+        var isArrayB = Array.isArray(b);
+        if (isArrayA && isArrayB) {
+          return a.length === b.length && a.every(function (e, i) {
+            return looseEqual(e, b[i])
+          })
+        } else if (a instanceof Date && b instanceof Date) {
+          return a.getTime() === b.getTime()
+        } else if (!isArrayA && !isArrayB) {
+          var keysA = Object.keys(a);
+          var keysB = Object.keys(b);
+          return keysA.length === keysB.length && keysA.every(function (key) {
+            return looseEqual(a[key], b[key])
+          })
+        } else {
+          /* istanbul ignore next */
+          return false
+        }
+      } catch (e) {
+        /* istanbul ignore next */
+        return false
+      }
+    } else if (!isObjectA && !isObjectB) {
+      return String(a) === String(b)
+    } else {
+      return false
+    }
+  }
+
+  /**
+   * Return the first index at which a loosely equal value can be
+   * found in the array (if value is a plain object, the array must
+   * contain an object of the same shape), or -1 if it is not present.
+   */
+  function looseIndexOf (arr, val) {
+    for (var i = 0; i < arr.length; i++) {
+      if (looseEqual(arr[i], val)) { return i }
+    }
+    return -1
+  }
+
+  /**
+   * Ensure a function is called only once.
+   */
+  function once (fn) {
+    var called = false;
+    return function () {
+      if (!called) {
+        called = true;
+        fn.apply(this, arguments);
+      }
+    }
+  }
+
+  var SSR_ATTR = 'data-server-rendered';
+
+  var ASSET_TYPES = [
+    'component',
+    'directive',
+    'filter'
+  ];
+
+  var LIFECYCLE_HOOKS = [
+    'beforeCreate',
+    'created',
+    'beforeMount',
+    'mounted',
+    'beforeUpdate',
+    'updated',
+    'beforeDestroy',
+    'destroyed',
+    'activated',
+    'deactivated',
+    'errorCaptured',
+    'serverPrefetch'
+  ];
+
+  /*  */
+
+
+
+  var config = ({
+    /**
+     * Option merge strategies (used in core/util/options)
+     */
+    // $flow-disable-line
+    optionMergeStrategies: Object.create(null),
+
+    /**
+     * Whether to suppress warnings.
+     */
+    silent: false,
+
+    /**
+     * Show production mode tip message on boot?
+     */
+    productionTip: "development" !== 'production',
+
+    /**
+     * Whether to enable devtools
+     */
+    devtools: "development" !== 'production',
+
+    /**
+     * Whether to record perf
+     */
+    performance: false,
+
+    /**
+     * Error handler for watcher errors
+     */
+    errorHandler: null,
+
+    /**
+     * Warn handler for watcher warns
+     */
+    warnHandler: null,
+
+    /**
+     * Ignore certain custom elements
+     */
+    ignoredElements: [],
+
+    /**
+     * Custom user key aliases for v-on
+     */
+    // $flow-disable-line
+    keyCodes: Object.create(null),
+
+    /**
+     * Check if a tag is reserved so that it cannot be registered as a
+     * component. This is platform-dependent and may be overwritten.
+     */
+    isReservedTag: no,
+
+    /**
+     * Check if an attribute is reserved so that it cannot be used as a component
+     * prop. This is platform-dependent and may be overwritten.
+     */
+    isReservedAttr: no,
+
+    /**
+     * Check if a tag is an unknown element.
+     * Platform-dependent.
+     */
+    isUnknownElement: no,
+
+    /**
+     * Get the namespace of an element
+     */
+    getTagNamespace: noop,
+
+    /**
+     * Parse the real tag name for the specific platform.
+     */
+    parsePlatformTagName: identity,
+
+    /**
+     * Check if an attribute must be bound using property, e.g. value
+     * Platform-dependent.
+     */
+    mustUseProp: no,
+
+    /**
+     * Perform updates asynchronously. Intended to be used by Vue Test Utils
+     * This will significantly reduce performance if set to false.
+     */
+    async: true,
+
+    /**
+     * Exposed for legacy reasons
+     */
+    _lifecycleHooks: LIFECYCLE_HOOKS
+  });
+
+  /*  */
+
+  /**
+   * unicode letters used for parsing html tags, component names and property paths.
+   * using https://www.w3.org/TR/html53/semantics-scripting.html#potentialcustomelementname
+   * skipping \u10000-\uEFFFF due to it freezing up PhantomJS
+   */
+  var unicodeLetters = '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(("[^" + unicodeLetters + ".$_\\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_" + unicodeLetters + "]*$")).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)) {
+        // issue #9511
+        // reassign to res to avoid catch triggering multiple times when nested calls
+        res = res.catch(function (e) { return handleError(e, vm, info + " (Promise/async)"); });
+      }
+    } catch (e) {
+      handleError(e, vm, info);
+    }
+    return res
+  }
+
+  function globalHandleError (err, vm, info) {
+    if (config.errorHandler) {
+      try {
+        return config.errorHandler.call(null, err, vm, info)
+      } catch (e) {
+        // if the user intentionally throws the original error in the handler,
+        // do not log it twice
+        if (e !== err) {
+          logError(e, null, 'config.errorHandler');
+        }
+      }
+    }
+    logError(err, vm, info);
+  }
+
+  function logError (err, vm, info) {
+    {
+      warn(("Error in " + info + ": \"" + (err.toString()) + "\""), vm);
+    }
+    /* istanbul ignore else */
+    if ((inBrowser || inWeex) && typeof console !== 'undefined') {
+      console.error(err);
+    } else {
+      throw err
+    }
+  }
+
+  /*  */
+
+  var isUsingMicroTask = false;
+
+  var callbacks = [];
+  var pending = false;
+
+  function flushCallbacks () {
+    pending = false;
+    var copies = callbacks.slice(0);
+    callbacks.length = 0;
+    for (var i = 0; i < copies.length; i++) {
+      copies[i]();
+    }
+  }
+
+  // Here we have async deferring wrappers using microtasks.
+  // In 2.5 we used (macro) tasks (in combination with microtasks).
+  // However, it has subtle problems when state is changed right before repaint
+  // (e.g. #6813, out-in transitions).
+  // Also, using (macro) tasks in event handler would cause some weird behaviors
+  // that cannot be circumvented (e.g. #7109, #7153, #7546, #7834, #8109).
+  // So we now use microtasks everywhere, again.
+  // A major drawback of this tradeoff is that there are some scenarios
+  // where microtasks have too high a priority and fire in between supposedly
+  // sequential events (e.g. #4521, #6690, which have workarounds)
+  // or even between bubbling of the same event (#6566).
+  var timerFunc;
+
+  // The nextTick behavior leverages the microtask queue, which can be accessed
+  // via either native Promise.then or MutationObserver.
+  // MutationObserver has wider support, however it is seriously bugged in
+  // UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It
+  // completely stops working after triggering a few times... so, if native
+  // Promise is available, we will use it:
+  /* istanbul ignore next, $flow-disable-line */
+  if (typeof Promise !== 'undefined' && isNative(Promise)) {
+    var p = Promise.resolve();
+    timerFunc = function () {
+      p.then(flushCallbacks);
+      // In problematic UIWebViews, Promise.then doesn't completely break, but
+      // it can get stuck in a weird state where callbacks are pushed into the
+      // microtask queue but the queue isn't being flushed, until the browser
+      // needs to do some other work, e.g. handle a timer. Therefore we can
+      // "force" the microtask queue to be flushed by adding an empty timer.
+      if (isIOS) { setTimeout(noop); }
+    };
+    isUsingMicroTask = true;
+  } else if (!isIE && typeof MutationObserver !== 'undefined' && (
+    isNative(MutationObserver) ||
+    // PhantomJS and iOS 7.x
+    MutationObserver.toString() === '[object MutationObserverConstructor]'
+  )) {
+    // Use MutationObserver where native Promise is not available,
+    // e.g. PhantomJS, iOS7, Android 4.4
+    // (#6466 MutationObserver is unreliable in IE11)
+    var counter = 1;
+    var observer = new MutationObserver(flushCallbacks);
+    var textNode = document.createTextNode(String(counter));
+    observer.observe(textNode, {
+      characterData: true
+    });
+    timerFunc = function () {
+      counter = (counter + 1) % 2;
+      textNode.data = String(counter);
+    };
+    isUsingMicroTask = true;
+  } else if (typeof setImmediate !== 'undefined' && isNative(setImmediate)) {
+    // Fallback to setImmediate.
+    // Techinically it leverages the (macro) task queue,
+    // but it is still a better choice than setTimeout.
+    timerFunc = function () {
+      setImmediate(flushCallbacks);
+    };
+  } else {
+    // Fallback to setTimeout.
+    timerFunc = function () {
+      setTimeout(flushCallbacks, 0);
+    };
+  }
+
+  function nextTick (cb, ctx) {
+    var _resolve;
+    callbacks.push(function () {
+      if (cb) {
+        try {
+          cb.call(ctx);
+        } catch (e) {
+          handleError(e, ctx, 'nextTick');
+        }
+      } else if (_resolve) {
+        _resolve(ctx);
+      }
+    });
+    if (!pending) {
+      pending = true;
+      timerFunc();
+    }
+    // $flow-disable-line
+    if (!cb && typeof Promise !== 'undefined') {
+      return new Promise(function (resolve) {
+        _resolve = resolve;
+      })
+    }
+  }
+
+  /*  */
+
+  var mark;
+  var measure;
+
+  {
+    var perf = inBrowser && window.performance;
+    /* istanbul ignore if */
+    if (
+      perf &&
+      perf.mark &&
+      perf.measure &&
+      perf.clearMarks &&
+      perf.clearMeasures
+    ) {
+      mark = function (tag) { return perf.mark(tag); };
+      measure = function (name, startTag, endTag) {
+        perf.measure(name, startTag, endTag);
+        perf.clearMarks(startTag);
+        perf.clearMarks(endTag);
+        // perf.clearMeasures(name)
+      };
+    }
+  }
+
+  /* not type checking this file because flow doesn't play well with Proxy */
+
+  var initProxy;
+
+  {
+    var allowedGlobals = makeMap(
+      'Infinity,undefined,NaN,isFinite,isNaN,' +
+      'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' +
+      'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,' +
+      'require' // for Webpack/Browserify
+    );
+
+    var warnNonPresent = function (target, key) {
+      warn(
+        "Property or method \"" + key + "\" is not defined on the instance but " +
+        'referenced during render. Make sure that this property is reactive, ' +
+        'either in the data option, or for class-based components, by ' +
+        'initializing the property. ' +
+        'See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.',
+        target
+      );
+    };
+
+    var warnReservedPrefix = function (target, key) {
+      warn(
+        "Property \"" + key + "\" must be accessed with \"$data." + key + "\" because " +
+        'properties starting with "$" or "_" are not proxied in the Vue instance to ' +
+        'prevent conflicts with Vue internals' +
+        'See: https://vuejs.org/v2/api/#data',
+        target
+      );
+    };
+
+    var hasProxy =
+      typeof Proxy !== 'undefined' && isNative(Proxy);
+
+    if (hasProxy) {
+      var isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta,exact');
+      config.keyCodes = new Proxy(config.keyCodes, {
+        set: function set (target, key, value) {
+          if (isBuiltInModifier(key)) {
+            warn(("Avoid overwriting built-in modifier in config.keyCodes: ." + key));
+            return false
+          } else {
+            target[key] = value;
+            return true
+          }
+        }
+      });
+    }
+
+    var hasHandler = {
+      has: function has (target, key) {
+        var has = key in target;
+        var isAllowed = allowedGlobals(key) ||
+          (typeof key === 'string' && key.charAt(0) === '_' && !(key in target.$data));
+        if (!has && !isAllowed) {
+          if (key in target.$data) { warnReservedPrefix(target, key); }
+          else { warnNonPresent(target, key); }
+        }
+        return has || !isAllowed
+      }
+    };
+
+    var getHandler = {
+      get: function get (target, key) {
+        if (typeof key === 'string' && !(key in target)) {
+          if (key in target.$data) { warnReservedPrefix(target, key); }
+          else { warnNonPresent(target, key); }
+        }
+        return target[key]
+      }
+    };
+
+    initProxy = function initProxy (vm) {
+      if (hasProxy) {
+        // determine which proxy handler to use
+        var options = vm.$options;
+        var handlers = options.render && options.render._withStripped
+          ? getHandler
+          : hasHandler;
+        vm._renderProxy = new Proxy(vm, handlers);
+      } else {
+        vm._renderProxy = vm;
+      }
+    };
+  }
+
+  /*  */
+
+  var seenObjects = new _Set();
+
+  /**
+   * Recursively traverse an object to evoke all converted
+   * getters, so that every nested property inside the object
+   * is collected as a "deep" dependency.
+   */
+  function traverse (val) {
+    _traverse(val, seenObjects);
+    seenObjects.clear();
+  }
+
+  function _traverse (val, seen) {
+    var i, keys;
+    var isA = Array.isArray(val);
+    if ((!isA && !isObject(val)) || Object.isFrozen(val) || val instanceof VNode) {
+      return
+    }
+    if (val.__ob__) {
+      var depId = val.__ob__.dep.id;
+      if (seen.has(depId)) {
+        return
+      }
+      seen.add(depId);
+    }
+    if (isA) {
+      i = val.length;
+      while (i--) { _traverse(val[i], seen); }
+    } else {
+      keys = Object.keys(val);
+      i = keys.length;
+      while (i--) { _traverse(val[keys[i]], seen); }
+    }
+  }
+
+  /*  */
+
+  var normalizeEvent = cached(function (name) {
+    var passive = name.charAt(0) === '&';
+    name = passive ? name.slice(1) : name;
+    var once$$1 = name.charAt(0) === '~'; // Prefixed last, checked first
+    name = once$$1 ? name.slice(1) : name;
+    var capture = name.charAt(0) === '!';
+    name = capture ? name.slice(1) : name;
+    return {
+      name: name,
+      once: once$$1,
+      capture: capture,
+      passive: passive
+    }
+  });
+
+  function createFnInvoker (fns, vm) {
+    function invoker () {
+      var arguments$1 = arguments;
+
+      var fns = invoker.fns;
+      if (Array.isArray(fns)) {
+        var cloned = fns.slice();
+        for (var i = 0; i < cloned.length; i++) {
+          invokeWithErrorHandling(cloned[i], null, arguments$1, vm, "v-on handler");
+        }
+      } else {
+        // return handler return value for single handlers
+        return invokeWithErrorHandling(fns, null, arguments, vm, "v-on handler")
+      }
+    }
+    invoker.fns = fns;
+    return invoker
+  }
+
+  function updateListeners (
+    on,
+    oldOn,
+    add,
+    remove$$1,
+    createOnceHandler,
+    vm
+  ) {
+    var name, def$$1, cur, old, event;
+    for (name in on) {
+      def$$1 = cur = on[name];
+      old = oldOn[name];
+      event = normalizeEvent(name);
+      if (isUndef(cur)) {
+        warn(
+          "Invalid handler for event \"" + (event.name) + "\": got " + String(cur),
+          vm
+        );
+      } else if (isUndef(old)) {
+        if (isUndef(cur.fns)) {
+          cur = on[name] = createFnInvoker(cur, vm);
+        }
+        if (isTrue(event.once)) {
+          cur = on[name] = createOnceHandler(event.name, cur, event.capture);
+        }
+        add(event.name, cur, event.capture, event.passive, event.params);
+      } else if (cur !== old) {
+        old.fns = cur;
+        on[name] = old;
+      }
+    }
+    for (name in oldOn) {
+      if (isUndef(on[name])) {
+        event = normalizeEvent(name);
+        remove$$1(event.name, oldOn[name], event.capture);
+      }
+    }
+  }
+
+  /*  */
+
+  function mergeVNodeHook (def, hookKey, hook) {
+    if (def instanceof VNode) {
+      def = def.data.hook || (def.data.hook = {});
+    }
+    var invoker;
+    var oldHook = def[hookKey];
+
+    function wrappedHook () {
+      hook.apply(this, arguments);
+      // important: remove merged hook to ensure it's called only once
+      // and prevent memory leak
+      remove(invoker.fns, wrappedHook);
+    }
+
+    if (isUndef(oldHook)) {
+      // no existing hook
+      invoker = createFnInvoker([wrappedHook]);
+    } else {
+      /* istanbul ignore if */
+      if (isDef(oldHook.fns) && isTrue(oldHook.merged)) {
+        // already a merged invoker
+        invoker = oldHook;
+        invoker.fns.push(wrappedHook);
+      } else {
+        // existing plain hook
+        invoker = createFnInvoker([oldHook, wrappedHook]);
+      }
+    }
+
+    invoker.merged = true;
+    def[hookKey] = invoker;
+  }
+
+  /*  */
+
+  function extractPropsFromVNodeData (
+    data,
+    Ctor,
+    tag
+  ) {
+    // we are only extracting raw values here.
+    // validation and default values are handled in the child
+    // component itself.
+    var propOptions = Ctor.options.props;
+    if (isUndef(propOptions)) {
+      return
+    }
+    var res = {};
+    var attrs = data.attrs;
+    var props = data.props;
+    if (isDef(attrs) || isDef(props)) {
+      for (var key in propOptions) {
+        var altKey = hyphenate(key);
+        {
+          var keyInLowerCase = key.toLowerCase();
+          if (
+            key !== keyInLowerCase &&
+            attrs && hasOwn(attrs, keyInLowerCase)
+          ) {
+            tip(
+              "Prop \"" + keyInLowerCase + "\" is passed to component " +
+              (formatComponentName(tag || Ctor)) + ", but the declared prop name is" +
+              " \"" + key + "\". " +
+              "Note that HTML attributes are case-insensitive and camelCased " +
+              "props need to use their kebab-case equivalents when using in-DOM " +
+              "templates. You should probably use \"" + altKey + "\" instead of \"" + key + "\"."
+            );
+          }
+        }
+        checkProp(res, props, key, altKey, true) ||
+        checkProp(res, attrs, key, altKey, false);
+      }
+    }
+    return res
+  }
+
+  function checkProp (
+    res,
+    hash,
+    key,
+    altKey,
+    preserve
+  ) {
+    if (isDef(hash)) {
+      if (hasOwn(hash, key)) {
+        res[key] = hash[key];
+        if (!preserve) {
+          delete hash[key];
+        }
+        return true
+      } else if (hasOwn(hash, altKey)) {
+        res[key] = hash[altKey];
+        if (!preserve) {
+          delete hash[altKey];
+        }
+        return true
+      }
+    }
+    return false
+  }
+
+  /*  */
+
+  // The template compiler attempts to minimize the need for normalization by
+  // statically analyzing the template at compile time.
+  //
+  // For plain HTML markup, normalization can be completely skipped because the
+  // generated render function is guaranteed to return Array<VNode>. There are
+  // two cases where extra normalization is needed:
+
+  // 1. When the children contains components - because a functional component
+  // may return an Array instead of a single root. In this case, just a simple
+  // normalization is needed - if any child is an Array, we flatten the whole
+  // thing with Array.prototype.concat. It is guaranteed to be only 1-level deep
+  // because functional components already normalize their own children.
+  function simpleNormalizeChildren (children) {
+    for (var i = 0; i < children.length; i++) {
+      if (Array.isArray(children[i])) {
+        return Array.prototype.concat.apply([], children)
+      }
+    }
+    return children
+  }
+
+  // 2. When the children contains constructs that always generated nested Arrays,
+  // e.g. <template>, <slot>, v-for, or when the children is provided by user
+  // with hand-written render functions / JSX. In such cases a full normalization
+  // is needed to cater to all possible types of children values.
+  function normalizeChildren (children) {
+    return isPrimitive(children)
+      ? [createTextVNode(children)]
+      : Array.isArray(children)
+        ? normalizeArrayChildren(children)
+        : undefined
+  }
+
+  function isTextNode (node) {
+    return isDef(node) && isDef(node.text) && isFalse(node.isComment)
+  }
+
+  function normalizeArrayChildren (children, nestedIndex) {
+    var res = [];
+    var i, c, lastIndex, last;
+    for (i = 0; i < children.length; i++) {
+      c = children[i];
+      if (isUndef(c) || typeof c === 'boolean') { continue }
+      lastIndex = res.length - 1;
+      last = res[lastIndex];
+      //  nested
+      if (Array.isArray(c)) {
+        if (c.length > 0) {
+          c = normalizeArrayChildren(c, ((nestedIndex || '') + "_" + i));
+          // merge adjacent text nodes
+          if (isTextNode(c[0]) && isTextNode(last)) {
+            res[lastIndex] = createTextVNode(last.text + (c[0]).text);
+            c.shift();
+          }
+          res.push.apply(res, c);
+        }
+      } else if (isPrimitive(c)) {
+        if (isTextNode(last)) {
+          // merge adjacent text nodes
+          // this is necessary for SSR hydration because text nodes are
+          // essentially merged when rendered to HTML strings
+          res[lastIndex] = createTextVNode(last.text + c);
+        } else if (c !== '') {
+          // convert primitive to vnode
+          res.push(createTextVNode(c));
+        }
+      } else {
+        if (isTextNode(c) && isTextNode(last)) {
+          // merge adjacent text nodes
+          res[lastIndex] = createTextVNode(last.text + c.text);
+        } else {
+          // default key for nested array children (likely generated by v-for)
+          if (isTrue(children._isVList) &&
+            isDef(c.tag) &&
+            isUndef(c.key) &&
+            isDef(nestedIndex)) {
+            c.key = "__vlist" + nestedIndex + "_" + i + "__";
+          }
+          res.push(c);
+        }
+      }
+    }
+    return res
+  }
+
+  /*  */
+
+  function initProvide (vm) {
+    var provide = vm.$options.provide;
+    if (provide) {
+      vm._provided = typeof provide === 'function'
+        ? provide.call(vm)
+        : provide;
+    }
+  }
+
+  function initInjections (vm) {
+    var result = resolveInject(vm.$options.inject, vm);
+    if (result) {
+      toggleObserving(false);
+      Object.keys(result).forEach(function (key) {
+        /* istanbul ignore else */
+        {
+          defineReactive$$1(vm, key, result[key], function () {
+            warn(
+              "Avoid mutating an injected value directly since the changes will be " +
+              "overwritten whenever the provided component re-renders. " +
+              "injection being mutated: \"" + key + "\"",
+              vm
+            );
+          });
+        }
+      });
+      toggleObserving(true);
+    }
+  }
+
+  function resolveInject (inject, vm) {
+    if (inject) {
+      // inject is :any because flow is not smart enough to figure out cached
+      var result = Object.create(null);
+      var keys = hasSymbol
+        ? Reflect.ownKeys(inject)
+        : Object.keys(inject);
+
+      for (var i = 0; i < keys.length; i++) {
+        var key = keys[i];
+        // #6574 in case the inject object is observed...
+        if (key === '__ob__') { continue }
+        var provideKey = inject[key].from;
+        var source = vm;
+        while (source) {
+          if (source._provided && hasOwn(source._provided, provideKey)) {
+            result[key] = source._provided[provideKey];
+            break
+          }
+          source = source.$parent;
+        }
+        if (!source) {
+          if ('default' in inject[key]) {
+            var provideDefault = inject[key].default;
+            result[key] = typeof provideDefault === 'function'
+              ? provideDefault.call(vm)
+              : provideDefault;
+          } else {
+            warn(("Injection \"" + key + "\" not found"), vm);
+          }
+        }
+      }
+      return result
+    }
+  }
+
+  /*  */
+
+
+
+  /**
+   * Runtime helper for resolving raw children VNodes into a slot object.
+   */
+  function resolveSlots (
+    children,
+    context
+  ) {
+    if (!children || !children.length) {
+      return {}
+    }
+    var slots = {};
+    for (var i = 0, l = children.length; i < l; i++) {
+      var child = children[i];
+      var data = child.data;
+      // remove slot attribute if the node is resolved as a Vue slot node
+      if (data && data.attrs && data.attrs.slot) {
+        delete data.attrs.slot;
+      }
+      // named slots should only be respected if the vnode was rendered in the
+      // same context.
+      if ((child.context === context || child.fnContext === context) &&
+        data && data.slot != null
+      ) {
+        var name = data.slot;
+        var slot = (slots[name] || (slots[name] = []));
+        if (child.tag === 'template') {
+          slot.push.apply(slot, child.children || []);
+        } else {
+          slot.push(child);
+        }
+      } else {
+        (slots.default || (slots.default = [])).push(child);
+      }
+    }
+    // ignore slots that contains only whitespace
+    for (var name$1 in slots) {
+      if (slots[name$1].every(isWhitespace)) {
+        delete slots[name$1];
+      }
+    }
+    return slots
+  }
+
+  function isWhitespace (node) {
+    return (node.isComment && !node.asyncFactory) || node.text === ' '
+  }
+
+  /*  */
+
+  function normalizeScopedSlots (
+    slots,
+    normalSlots,
+    prevSlots
+  ) {
+    var res;
+    var isStable = slots ? !!slots.$stable : true;
+    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 &&
+      Object.keys(normalSlots).length === 0
+    ) {
+      // 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);
+    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
+        ? 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);
+          if (!(key in hash) && !(camelizedKey in hash)) {
+            hash[key] = value[key];
+
+            if (isSync) {
+              var on = data.on || (data.on = {});
+              on[("update:" + camelizedKey)] = function ($event) {
+                value[key] = $event;
+              };
+            }
+          }
+        };
+
+        for (var key in value) loop( key );
+      }
+    }
+    return data
+  }
+
+  /*  */
+
+  /**
+   * Runtime helper for rendering static trees.
+   */
+  function renderStatic (
+    index,
+    isInFor
+  ) {
+    var cached = this._staticTrees || (this._staticTrees = []);
+    var tree = cached[index];
+    // if has already-rendered static tree and not inside v-for,
+    // we can reuse the same tree.
+    if (tree && !isInFor) {
+      return tree
+    }
+    // otherwise, render a fresh tree.
+    tree = cached[index] = this.$options.staticRenderFns[index].call(
+      this._renderProxy,
+      null,
+      this // for render fns generated for functional component templates
+    );
+    markStatic(tree, ("__static__" + index), false);
+    return tree
+  }
+
+  /**
+   * Runtime helper for v-once.
+   * Effectively it means marking the node as static with a unique key.
+   */
+  function markOnce (
+    tree,
+    index,
+    key
+  ) {
+    markStatic(tree, ("__once__" + index + (key ? ("_" + key) : "")), true);
+    return tree
+  }
+
+  function markStatic (
+    tree,
+    key,
+    isOnce
+  ) {
+    if (Array.isArray(tree)) {
+      for (var i = 0; i < tree.length; i++) {
+        if (tree[i] && typeof tree[i] !== 'string') {
+          markStaticNode(tree[i], (key + "_" + i), isOnce);
+        }
+      }
+    } else {
+      markStaticNode(tree, key, isOnce);
+    }
+  }
+
+  function markStaticNode (node, key, isOnce) {
+    node.isStatic = true;
+    node.key = key;
+    node.isOnce = isOnce;
+  }
+
+  /*  */
+
+  function bindObjectListeners (data, value) {
+    if (value) {
+      if (!isPlainObject(value)) {
+        warn(
+          'v-on without argument expects an Object value',
+          this
+        );
+      } else {
+        var on = data.on = data.on ? extend({}, data.on) : {};
+        for (var key in value) {
+          var existing = on[key];
+          var ours = value[key];
+          on[key] = existing ? [].concat(existing, ours) : ours;
+        }
+      }
+    }
+    return data
+  }
+
+  /*  */
+
+  function resolveScopedSlots (
+    fns, // see flow/vnode
+    res,
+    // the following are added in 2.6
+    hasDynamicKeys,
+    contentHashKey
+  ) {
+    res = res || { $stable: !hasDynamicKeys };
+    for (var i = 0; i < fns.length; i++) {
+      var slot = fns[i];
+      if (Array.isArray(slot)) {
+        resolveScopedSlots(slot, res, hasDynamicKeys);
+      } else if (slot) {
+        // marker for reverse proxying v-slot without scope on this.$slots
+        if (slot.proxy) {
+          slot.fn.proxy = true;
+        }
+        res[slot.key] = slot.fn;
+      }
+    }
+    if (contentHashKey) {
+      (res).$key = contentHashKey;
+    }
+    return res
+  }
+
+  /*  */
+
+  function bindDynamicKeys (baseObj, values) {
+    for (var i = 0; i < values.length; i += 2) {
+      var key = values[i];
+      if (typeof key === 'string' && key) {
+        baseObj[values[i]] = values[i + 1];
+      } else if (key !== '' && key !== null) {
+        // null is a speical value for explicitly removing a binding
+        warn(
+          ("Invalid value for dynamic directive argument (expected string or null): " + key),
+          this
+        );
+      }
+    }
+    return baseObj
+  }
+
+  // helper to dynamically append modifier runtime markers to event names.
+  // ensure only append when value is already string, otherwise it will be cast
+  // to string and cause the type check to miss.
+  function prependModifier (value, symbol) {
+    return typeof value === 'string' ? symbol + value : value
+  }
+
+  /*  */
+
+  function installRenderHelpers (target) {
+    target._o = markOnce;
+    target._n = toNumber;
+    target._s = toString;
+    target._l = renderList;
+    target._t = renderSlot;
+    target._q = looseEqual;
+    target._i = looseIndexOf;
+    target._m = renderStatic;
+    target._f = resolveFilter;
+    target._k = checkKeyCodes;
+    target._b = bindObjectProps;
+    target._v = createTextVNode;
+    target._e = createEmptyVNode;
+    target._u = resolveScopedSlots;
+    target._g = bindObjectListeners;
+    target._d = bindDynamicKeys;
+    target._p = prependModifier;
+  }
+
+  /*  */
+
+  function FunctionalRenderContext (
+    data,
+    props,
+    children,
+    parent,
+    Ctor
+  ) {
+    var this$1 = this;
+
+    var options = Ctor.options;
+    // ensure the createElement function in functional components
+    // gets a unique context - this is necessary for correct named slot check
+    var contextVm;
+    if (hasOwn(parent, '_uid')) {
+      contextVm = Object.create(parent);
+      // $flow-disable-line
+      contextVm._original = parent;
+    } else {
+      // the context vm passed in is a functional context as well.
+      // in this case we want to make sure we are able to get a hold to the
+      // real context instance.
+      contextVm = parent;
+      // $flow-disable-line
+      parent = parent._original;
+    }
+    var isCompiled = isTrue(options._compiled);
+    var needNormalization = !isCompiled;
+
+    this.data = data;
+    this.props = props;
+    this.children = children;
+    this.parent = parent;
+    this.listeners = data.on || emptyObject;
+    this.injections = resolveInject(options.inject, parent);
+    this.slots = function () {
+      if (!this$1.$slots) {
+        normalizeScopedSlots(
+          data.scopedSlots,
+          this$1.$slots = resolveSlots(children, parent)
+        );
+      }
+      return this$1.$slots
+    };
+
+    Object.defineProperty(this, 'scopedSlots', ({
+      enumerable: true,
+      get: function get () {
+        return normalizeScopedSlots(data.scopedSlots, this.slots())
+      }
+    }));
+
+    // support for compiled functional template
+    if (isCompiled) {
+      // exposing $options for renderStatic()
+      this.$options = options;
+      // pre-resolve slots for renderSlot()
+      this.$slots = this.slots();
+      this.$scopedSlots = normalizeScopedSlots(data.scopedSlots, this.$slots);
+    }
+
+    if (options._scopeId) {
+      this._c = function (a, b, c, d) {
+        var vnode = createElement(contextVm, a, b, c, d, needNormalization);
+        if (vnode && !Array.isArray(vnode)) {
+          vnode.fnScopeId = options._scopeId;
+          vnode.fnContext = parent;
+        }
+        return vnode
+      };
+    } else {
+      this._c = function (a, b, c, d) { return createElement(contextVm, a, b, c, d, needNormalization); };
+    }
+  }
+
+  installRenderHelpers(FunctionalRenderContext.prototype);
+
+  function createFunctionalComponent (
+    Ctor,
+    propsData,
+    data,
+    contextVm,
+    children
+  ) {
+    var options = Ctor.options;
+    var props = {};
+    var propOptions = options.props;
+    if (isDef(propOptions)) {
+      for (var key in propOptions) {
+        props[key] = validateProp(key, propOptions, propsData || emptyObject);
+      }
+    } else {
+      if (isDef(data.attrs)) { mergeProps(props, data.attrs); }
+      if (isDef(data.props)) { mergeProps(props, data.props); }
+    }
+
+    var renderContext = new FunctionalRenderContext(
+      data,
+      props,
+      children,
+      contextVm,
+      Ctor
+    );
+
+    var vnode = options.render.call(null, renderContext._c, renderContext);
+
+    if (vnode instanceof VNode) {
+      return cloneAndMarkFunctionalResult(vnode, data, renderContext.parent, options, renderContext)
+    } else if (Array.isArray(vnode)) {
+      var vnodes = normalizeChildren(vnode) || [];
+      var res = new Array(vnodes.length);
+      for (var i = 0; i < vnodes.length; i++) {
+        res[i] = cloneAndMarkFunctionalResult(vnodes[i], data, renderContext.parent, options, renderContext);
+      }
+      return res
+    }
+  }
+
+  function cloneAndMarkFunctionalResult (vnode, data, contextVm, options, renderContext) {
+    // #7817 clone node before setting fnContext, otherwise if the node is reused
+    // (e.g. it was from a cached normal slot) the fnContext causes named slots
+    // that should not be matched to match.
+    var clone = cloneVNode(vnode);
+    clone.fnContext = contextVm;
+    clone.fnOptions = options;
+    {
+      (clone.devtoolsMeta = clone.devtoolsMeta || {}).renderContext = renderContext;
+    }
+    if (data.slot) {
+      (clone.data || (clone.data = {})).slot = data.slot;
+    }
+    return clone
+  }
+
+  function mergeProps (to, from) {
+    for (var key in from) {
+      to[camelize(key)] = from[key];
+    }
+  }
+
+  /*  */
+
+  /*  */
+
+  /*  */
+
+  /*  */
+
+  // inline hooks to be invoked on component VNodes during patch
+  var componentVNodeHooks = {
+    init: function init (vnode, hydrating) {
+      if (
+        vnode.componentInstance &&
+        !vnode.componentInstance._isDestroyed &&
+        vnode.data.keepAlive
+      ) {
+        // kept-alive components, treat as a patch
+        var mountedNode = vnode; // work around flow
+        componentVNodeHooks.prepatch(mountedNode, mountedNode);
+      } else {
+        var child = vnode.componentInstance = createComponentInstanceForVnode(
+          vnode,
+          activeInstance
+        );
+        child.$mount(hydrating ? vnode.elm : undefined, hydrating);
+      }
+    },
+
+    prepatch: function prepatch (oldVnode, vnode) {
+      var options = vnode.componentOptions;
+      var child = vnode.componentInstance = oldVnode.componentInstance;
+      updateChildComponent(
+        child,
+        options.propsData, // updated props
+        options.listeners, // updated listeners
+        vnode, // new parent vnode
+        options.children // new children
+      );
+    },
+
+    insert: function insert (vnode) {
+      var context = vnode.context;
+      var componentInstance = vnode.componentInstance;
+      if (!componentInstance._isMounted) {
+        componentInstance._isMounted = true;
+        callHook(componentInstance, 'mounted');
+      }
+      if (vnode.data.keepAlive) {
+        if (context._isMounted) {
+          // vue-router#1212
+          // During updates, a kept-alive component's child components may
+          // change, so directly walking the tree here may call activated hooks
+          // on incorrect children. Instead we push them into a queue which will
+          // be processed after the whole patch process ended.
+          queueActivatedComponent(componentInstance);
+        } else {
+          activateChildComponent(componentInstance, true /* direct */);
+        }
+      }
+    },
+
+    destroy: function destroy (vnode) {
+      var componentInstance = vnode.componentInstance;
+      if (!componentInstance._isDestroyed) {
+        if (!vnode.data.keepAlive) {
+          componentInstance.$destroy();
+        } else {
+          deactivateChildComponent(componentInstance, true /* direct */);
+        }
+      }
+    }
+  };
+
+  var hooksToMerge = Object.keys(componentVNodeHooks);
+
+  function createComponent (
+    Ctor,
+    data,
+    context,
+    children,
+    tag
+  ) {
+    if (isUndef(Ctor)) {
+      return
+    }
+
+    var baseCtor = context.$options._base;
+
+    // plain options object: turn it into a constructor
+    if (isObject(Ctor)) {
+      Ctor = baseCtor.extend(Ctor);
+    }
+
+    // if at this stage it's not a constructor or an async component factory,
+    // reject.
+    if (typeof Ctor !== 'function') {
+      {
+        warn(("Invalid Component definition: " + (String(Ctor))), context);
+      }
+      return
+    }
+
+    // async component
+    var asyncFactory;
+    if (isUndef(Ctor.cid)) {
+      asyncFactory = Ctor;
+      Ctor = resolveAsyncComponent(asyncFactory, baseCtor);
+      if (Ctor === undefined) {
+        // return a placeholder node for async component, which is rendered
+        // as a comment node but preserves all the raw information for the node.
+        // the information will be used for async server-rendering and hydration.
+        return createAsyncPlaceholder(
+          asyncFactory,
+          data,
+          context,
+          children,
+          tag
+        )
+      }
+    }
+
+    data = data || {};
+
+    // resolve constructor options in case global mixins are applied after
+    // component constructor creation
+    resolveConstructorOptions(Ctor);
+
+    // transform component v-model data into props & events
+    if (isDef(data.model)) {
+      transformModel(Ctor.options, data);
+    }
+
+    // extract props
+    var propsData = extractPropsFromVNodeData(data, Ctor, tag);
+
+    // functional component
+    if (isTrue(Ctor.options.functional)) {
+      return createFunctionalComponent(Ctor, propsData, data, context, children)
+    }
+
+    // extract listeners, since these needs to be treated as
+    // child component listeners instead of DOM listeners
+    var listeners = data.on;
+    // replace with listeners with .native modifier
+    // so it gets processed during parent component patch.
+    data.on = data.nativeOn;
+
+    if (isTrue(Ctor.options.abstract)) {
+      // abstract components do not keep anything
+      // other than props & listeners & slot
+
+      // work around flow
+      var slot = data.slot;
+      data = {};
+      if (slot) {
+        data.slot = slot;
+      }
+    }
+
+    // install component management hooks onto the placeholder node
+    installComponentHooks(data);
+
+    // return a placeholder vnode
+    var name = Ctor.options.name || tag;
+    var vnode = new VNode(
+      ("vue-component-" + (Ctor.cid) + (name ? ("-" + name) : '')),
+      data, undefined, undefined, undefined, context,
+      { Ctor: Ctor, propsData: propsData, listeners: listeners, tag: tag, children: children },
+      asyncFactory
+    );
+
+    return vnode
+  }
+
+  function createComponentInstanceForVnode (
+    vnode, // we know it's MountedComponentVNode but flow doesn't
+    parent // activeInstance in lifecycle state
+  ) {
+    var options = {
+      _isComponent: true,
+      _parentVnode: vnode,
+      parent: parent
+    };
+    // check inline-template render functions
+    var inlineTemplate = vnode.data.inlineTemplate;
+    if (isDef(inlineTemplate)) {
+      options.render = inlineTemplate.render;
+      options.staticRenderFns = inlineTemplate.staticRenderFns;
+    }
+    return new vnode.componentOptions.Ctor(options)
+  }
+
+  function installComponentHooks (data) {
+    var hooks = data.hook || (data.hook = {});
+    for (var i = 0; i < hooksToMerge.length; i++) {
+      var key = hooksToMerge[i];
+      var existing = hooks[key];
+      var toMerge = componentVNodeHooks[key];
+      if (existing !== toMerge && !(existing && existing._merged)) {
+        hooks[key] = existing ? mergeHook$1(toMerge, existing) : toMerge;
+      }
+    }
+  }
+
+  function mergeHook$1 (f1, f2) {
+    var merged = function (a, b) {
+      // flow complains about extra args which is why we use any
+      f1(a, b);
+      f2(a, b);
+    };
+    merged._merged = true;
+    return merged
+  }
+
+  // transform component v-model info (value and callback) into
+  // prop and event handler respectively.
+  function transformModel (options, data) {
+    var prop = (options.model && options.model.prop) || 'value';
+    var event = (options.model && options.model.event) || 'input'
+    ;(data.attrs || (data.attrs = {}))[prop] = data.model.value;
+    var on = data.on || (data.on = {});
+    var existing = on[event];
+    var callback = data.model.callback;
+    if (isDef(existing)) {
+      if (
+        Array.isArray(existing)
+          ? existing.indexOf(callback) === -1
+          : existing !== callback
+      ) {
+        on[event] = [callback].concat(existing);
+      }
+    } else {
+      on[event] = callback;
+    }
+  }
+
+  /*  */
+
+  var SIMPLE_NORMALIZE = 1;
+  var ALWAYS_NORMALIZE = 2;
+
+  // wrapper function for providing a more flexible interface
+  // without getting yelled at by flow
+  function createElement (
+    context,
+    tag,
+    data,
+    children,
+    normalizationType,
+    alwaysNormalize
+  ) {
+    if (Array.isArray(data) || isPrimitive(data)) {
+      normalizationType = children;
+      children = data;
+      data = undefined;
+    }
+    if (isTrue(alwaysNormalize)) {
+      normalizationType = ALWAYS_NORMALIZE;
+    }
+    return _createElement(context, tag, data, children, normalizationType)
+  }
+
+  function _createElement (
+    context,
+    tag,
+    data,
+    children,
+    normalizationType
+  ) {
+    if (isDef(data) && isDef((data).__ob__)) {
+      warn(
+        "Avoid using observed data object as vnode data: " + (JSON.stringify(data)) + "\n" +
+        'Always create fresh vnode data objects in each render!',
+        context
+      );
+      return createEmptyVNode()
+    }
+    // object syntax in v-bind
+    if (isDef(data) && isDef(data.is)) {
+      tag = data.is;
+    }
+    if (!tag) {
+      // in case of component :is set to falsy value
+      return createEmptyVNode()
+    }
+    // warn against non-primitive key
+    if (isDef(data) && isDef(data.key) && !isPrimitive(data.key)
+    ) {
+      {
+        warn(
+          'Avoid using non-primitive value as key, ' +
+          'use string/number value instead.',
+          context
+        );
+      }
+    }
+    // support single function children as default scoped slot
+    if (Array.isArray(children) &&
+      typeof children[0] === 'function'
+    ) {
+      data = data || {};
+      data.scopedSlots = { default: children[0] };
+      children.length = 0;
+    }
+    if (normalizationType === ALWAYS_NORMALIZE) {
+      children = normalizeChildren(children);
+    } else if (normalizationType === SIMPLE_NORMALIZE) {
+      children = simpleNormalizeChildren(children);
+    }
+    var vnode, ns;
+    if (typeof tag === 'string') {
+      var Ctor;
+      ns = (context.$vnode && context.$vnode.ns) || config.getTagNamespace(tag);
+      if (config.isReservedTag(tag)) {
+        // platform built-in elements
+        vnode = new VNode(
+          config.parsePlatformTagName(tag), data, children,
+          undefined, undefined, context
+        );
+      } else if ((!data || !data.pre) && isDef(Ctor = resolveAsset(context.$options, 'components', tag))) {
+        // component
+        vnode = createComponent(Ctor, data, context, children, tag);
+      } else {
+        // unknown or unlisted namespaced elements
+        // check at runtime because it may get assigned a namespace when its
+        // parent normalizes children
+        vnode = new VNode(
+          tag, data, children,
+          undefined, undefined, context
+        );
+      }
+    } else {
+      // direct component options / constructor
+      vnode = createComponent(tag, data, context, children);
+    }
+    if (Array.isArray(vnode)) {
+      return vnode
+    } else if (isDef(vnode)) {
+      if (isDef(ns)) { applyNS(vnode, ns); }
+      if (isDef(data)) { registerDeepBindings(data); }
+      return vnode
+    } else {
+      return createEmptyVNode()
+    }
+  }
+
+  function applyNS (vnode, ns, force) {
+    vnode.ns = ns;
+    if (vnode.tag === 'foreignObject') {
+      // use default namespace inside foreignObject
+      ns = undefined;
+      force = true;
+    }
+    if (isDef(vnode.children)) {
+      for (var i = 0, l = vnode.children.length; i < l; i++) {
+        var child = vnode.children[i];
+        if (isDef(child.tag) && (
+          isUndef(child.ns) || (isTrue(force) && child.tag !== 'svg'))) {
+          applyNS(child, ns, force);
+        }
+      }
+    }
+  }
+
+  // ref #5318
+  // necessary to ensure parent re-render when deep bindings like :style and
+  // :class are used on slot nodes
+  function registerDeepBindings (data) {
+    if (isObject(data.style)) {
+      traverse(data.style);
+    }
+    if (isObject(data.class)) {
+      traverse(data.class);
+    }
+  }
+
+  /*  */
+
+  function initRender (vm) {
+    vm._vnode = null; // the root of the child tree
+    vm._staticTrees = null; // v-once cached trees
+    var options = vm.$options;
+    var parentVnode = vm.$vnode = options._parentVnode; // the placeholder node in parent tree
+    var renderContext = parentVnode && parentVnode.context;
+    vm.$slots = resolveSlots(options._renderChildren, renderContext);
+    vm.$scopedSlots = emptyObject;
+    // bind the createElement fn to this instance
+    // so that we get proper render context inside it.
+    // args order: tag, data, children, normalizationType, alwaysNormalize
+    // internal version is used by render functions compiled from templates
+    vm._c = function (a, b, c, d) { return createElement(vm, a, b, c, d, false); };
+    // normalization is always applied for the public version, used in
+    // user-written render functions.
+    vm.$createElement = function (a, b, c, d) { return createElement(vm, a, b, c, d, true); };
+
+    // $attrs & $listeners are exposed for easier HOC creation.
+    // they need to be reactive so that HOCs using them are always updated
+    var parentData = parentVnode && parentVnode.data;
+
+    /* istanbul ignore else */
+    {
+      defineReactive$$1(vm, '$attrs', parentData && parentData.attrs || emptyObject, function () {
+        !isUpdatingChildComponent && warn("$attrs is readonly.", vm);
+      }, true);
+      defineReactive$$1(vm, '$listeners', options._parentListeners || emptyObject, function () {
+        !isUpdatingChildComponent && warn("$listeners is readonly.", vm);
+      }, true);
+    }
+  }
+
+  var currentRenderingInstance = null;
+
+  function renderMixin (Vue) {
+    // install runtime convenience helpers
+    installRenderHelpers(Vue.prototype);
+
+    Vue.prototype.$nextTick = function (fn) {
+      return nextTick(fn, this)
+    };
+
+    Vue.prototype._render = function () {
+      var vm = this;
+      var ref = vm.$options;
+      var render = ref.render;
+      var _parentVnode = ref._parentVnode;
+
+      if (_parentVnode) {
+        vm.$scopedSlots = normalizeScopedSlots(
+          _parentVnode.data.scopedSlots,
+          vm.$slots,
+          vm.$scopedSlots
+        );
+      }
+
+      // set parent vnode. this allows render functions to have access
+      // to the data on the placeholder node.
+      vm.$vnode = _parentVnode;
+      // render self
+      var vnode;
+      try {
+        // There's no need to maintain a stack becaues all render fns are called
+        // separately from one another. Nested component's render fns are called
+        // when parent component is patched.
+        currentRenderingInstance = vm;
+        vnode = render.call(vm._renderProxy, vm.$createElement);
+      } catch (e) {
+        handleError(e, vm, "render");
+        // return error render result,
+        // or previous vnode to prevent render error causing blank component
+        /* istanbul ignore else */
+        if (vm.$options.renderError) {
+          try {
+            vnode = vm.$options.renderError.call(vm._renderProxy, vm.$createElement, e);
+          } catch (e) {
+            handleError(e, vm, "renderError");
+            vnode = vm._vnode;
+          }
+        } else {
+          vnode = vm._vnode;
+        }
+      } finally {
+        currentRenderingInstance = null;
+      }
+      // if the returned array contains only a single node, allow it
+      if (Array.isArray(vnode) && vnode.length === 1) {
+        vnode = vnode[0];
+      }
+      // return empty vnode in case the render function errored out
+      if (!(vnode instanceof VNode)) {
+        if (Array.isArray(vnode)) {
+          warn(
+            'Multiple root nodes returned from render function. Render function ' +
+            'should return a single root node.',
+            vm
+          );
+        }
+        vnode = createEmptyVNode();
+      }
+      // set parent
+      vnode.parent = _parentVnode;
+      return vnode
+    };
+  }
+
+  /*  */
+
+  function ensureCtor (comp, base) {
+    if (
+      comp.__esModule ||
+      (hasSymbol && comp[Symbol.toStringTag] === 'Module')
+    ) {
+      comp = comp.default;
+    }
+    return isObject(comp)
+      ? base.extend(comp)
+      : comp
+  }
+
+  function createAsyncPlaceholder (
+    factory,
+    data,
+    context,
+    children,
+    tag
+  ) {
+    var node = createEmptyVNode();
+    node.asyncFactory = factory;
+    node.asyncMeta = { data: data, context: context, children: children, tag: tag };
+    return node
+  }
+
+  function resolveAsyncComponent (
+    factory,
+    baseCtor
+  ) {
+    if (isTrue(factory.error) && isDef(factory.errorComp)) {
+      return factory.errorComp
+    }
+
+    if (isDef(factory.resolved)) {
+      return factory.resolved
+    }
+
+    if (isTrue(factory.loading) && isDef(factory.loadingComp)) {
+      return factory.loadingComp
+    }
+
+    var owner = currentRenderingInstance;
+    if (isDef(factory.owners)) {
+      // already pending
+      factory.owners.push(owner);
+    } else {
+      var owners = factory.owners = [owner];
+      var sync = true;
+
+      var forceRender = function (renderCompleted) {
+        for (var i = 0, l = owners.length; i < l; i++) {
+          (owners[i]).$forceUpdate();
+        }
+
+        if (renderCompleted) {
+          owners.length = 0;
+        }
+      };
+
+      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 {
+              setTimeout(function () {
+                if (isUndef(factory.resolved) && isUndef(factory.error)) {
+                  factory.loading = true;
+                  forceRender(false);
+                }
+              }, res.delay || 200);
+            }
+          }
+
+          if (isDef(res.timeout)) {
+            setTimeout(function () {
+              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.
+  if (inBrowser && getNow() > document.createEvent('Event').timeStamp) {
+    // if the low-res timestamp which is bigger than the event timestamp
+    // (which is evaluated AFTER) it means the event is using a hi-res timestamp,
+    // and we need to use the hi-res version for event listeners 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 = '2.6.7';
+
+  /*  */
+
+  // these are reserved for web because they are directly compiled away
+  // during template compilation
+  var isReservedAttr = makeMap('style,class');
+
+  // attributes that should be using props for binding
+  var acceptValue = makeMap('input,textarea,option,select,progress');
+  var mustUseProp = function (tag, type, attr) {
+    return (
+      (attr === 'value' && acceptValue(tag)) && type !== 'button' ||
+      (attr === 'selected' && tag === 'option') ||
+      (attr === 'checked' && tag === 'input') ||
+      (attr === 'muted' && tag === 'video')
+    )
+  };
+
+  var isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck');
+
+  var isValidContentEditableValue = makeMap('events,caret,typing,plaintext-only');
+
+  var convertEnumeratedValue = function (key, value) {
+    return isFalsyAttrValue(value) || value === 'false'
+      ? 'false'
+      // allow arbitrary string value for contenteditable
+      : key === 'contenteditable' && isValidContentEditableValue(value)
+        ? value
+        : 'true'
+  };
+
+  var isBooleanAttr = makeMap(
+    'allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' +
+    'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' +
+    'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' +
+    'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' +
+    'required,reversed,scoped,seamless,selected,sortable,translate,' +
+    'truespeed,typemustmatch,visible'
+  );
+
+  var xlinkNS = 'http://www.w3.org/1999/xlink';
+
+  var isXlink = function (name) {
+    return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink'
+  };
+
+  var getXlinkProp = function (name) {
+    return isXlink(name) ? name.slice(6, name.length) : ''
+  };
+
+  var isFalsyAttrValue = function (val) {
+    return val == null || val === false
+  };
+
+  /*  */
+
+  function genClassForVnode (vnode) {
+    var data = vnode.data;
+    var parentNode = vnode;
+    var childNode = vnode;
+    while (isDef(childNode.componentInstance)) {
+      childNode = childNode.componentInstance._vnode;
+      if (childNode && childNode.data) {
+        data = mergeClassData(childNode.data, data);
+      }
+    }
+    while (isDef(parentNode = parentNode.parent)) {
+      if (parentNode && parentNode.data) {
+        data = mergeClassData(data, parentNode.data);
+      }
+    }
+    return renderClass(data.staticClass, data.class)
+  }
+
+  function mergeClassData (child, parent) {
+    return {
+      staticClass: concat(child.staticClass, parent.staticClass),
+      class: isDef(child.class)
+        ? [child.class, parent.class]
+        : parent.class
+    }
+  }
+
+  function renderClass (
+    staticClass,
+    dynamicClass
+  ) {
+    if (isDef(staticClass) || isDef(dynamicClass)) {
+      return concat(staticClass, stringifyClass(dynamicClass))
+    }
+    /* istanbul ignore next */
+    return ''
+  }
+
+  function concat (a, b) {
+    return a ? b ? (a + ' ' + b) : a : (b || '')
+  }
+
+  function stringifyClass (value) {
+    if (Array.isArray(value)) {
+      return stringifyArray(value)
+    }
+    if (isObject(value)) {
+      return stringifyObject(value)
+    }
+    if (typeof value === 'string') {
+      return value
+    }
+    /* istanbul ignore next */
+    return ''
+  }
+
+  function stringifyArray (value) {
+    var res = '';
+    var stringified;
+    for (var i = 0, l = value.length; i < l; i++) {
+      if (isDef(stringified = stringifyClass(value[i])) && stringified !== '') {
+        if (res) { res += ' '; }
+        res += stringified;
+      }
+    }
+    return res
+  }
+
+  function stringifyObject (value) {
+    var res = '';
+    for (var key in value) {
+      if (value[key]) {
+        if (res) { res += ' '; }
+        res += key;
+      }
+    }
+    return res
+  }
+
+  /*  */
+
+  var namespaceMap = {
+    svg: 'http://www.w3.org/2000/svg',
+    math: 'http://www.w3.org/1998/Math/MathML'
+  };
+
+  var isHTMLTag = makeMap(
+    'html,body,base,head,link,meta,style,title,' +
+    'address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,' +
+    'div,dd,dl,dt,figcaption,figure,picture,hr,img,li,main,ol,p,pre,ul,' +
+    'a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,' +
+    's,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video,' +
+    'embed,object,param,source,canvas,script,noscript,del,ins,' +
+    'caption,col,colgroup,table,thead,tbody,td,th,tr,' +
+    'button,datalist,fieldset,form,input,label,legend,meter,optgroup,option,' +
+    'output,progress,select,textarea,' +
+    'details,dialog,menu,menuitem,summary,' +
+    'content,element,shadow,template,blockquote,iframe,tfoot'
+  );
+
+  // this map is intentionally selective, only covering SVG elements that may
+  // contain child elements.
+  var isSVG = makeMap(
+    'svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,font-face,' +
+    'foreignObject,g,glyph,image,line,marker,mask,missing-glyph,path,pattern,' +
+    'polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view',
+    true
+  );
+
+  var isPreTag = function (tag) { return tag === 'pre'; };
+
+  var isReservedTag = function (tag) {
+    return isHTMLTag(tag) || isSVG(tag)
+  };
+
+  function getTagNamespace (tag) {
+    if (isSVG(tag)) {
+      return 'svg'
+    }
+    // basic support for MathML
+    // note it doesn't support other MathML elements being component roots
+    if (tag === 'math') {
+      return 'math'
+    }
+  }
+
+  var unknownElementCache = Object.create(null);
+  function isUnknownElement (tag) {
+    /* istanbul ignore if */
+    if (!inBrowser) {
+      return true
+    }
+    if (isReservedTag(tag)) {
+      return false
+    }
+    tag = tag.toLowerCase();
+    /* istanbul ignore if */
+    if (unknownElementCache[tag] != null) {
+      return unknownElementCache[tag]
+    }
+    var el = document.createElement(tag);
+    if (tag.indexOf('-') > -1) {
+      // http://stackoverflow.com/a/28210364/1070244
+      return (unknownElementCache[tag] = (
+        el.constructor === window.HTMLUnknownElement ||
+        el.constructor === window.HTMLElement
+      ))
+    } else {
+      return (unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString()))
+    }
+  }
+
+  var isTextInputType = makeMap('text,number,password,search,email,tel,url');
+
+  /*  */
+
+  /**
+   * Query an element selector if it's not an element already.
+   */
+  function query (el) {
+    if (typeof el === 'string') {
+      var selected = document.querySelector(el);
+      if (!selected) {
+        warn(
+          'Cannot find element: ' + el
+        );
+        return document.createElement('div')
+      }
+      return selected
+    } else {
+      return el
+    }
+  }
+
+  /*  */
+
+  function createElement$1 (tagName, vnode) {
+    var elm = document.createElement(tagName);
+    if (tagName !== 'select') {
+      return elm
+    }
+    // false or null will remove the attribute but undefined will not
+    if (vnode.data && vnode.data.attrs && vnode.data.attrs.multiple !== undefined) {
+      elm.setAttribute('multiple', 'multiple');
+    }
+    return elm
+  }
+
+  function createElementNS (namespace, tagName) {
+    return document.createElementNS(namespaceMap[namespace], tagName)
+  }
+
+  function createTextNode (text) {
+    return document.createTextNode(text)
+  }
+
+  function createComment (text) {
+    return document.createComment(text)
+  }
+
+  function insertBefore (parentNode, newNode, referenceNode) {
+    parentNode.insertBefore(newNode, referenceNode);
+  }
+
+  function removeChild (node, child) {
+    node.removeChild(child);
+  }
+
+  function appendChild (node, child) {
+    node.appendChild(child);
+  }
+
+  function parentNode (node) {
+    return node.parentNode
+  }
+
+  function nextSibling (node) {
+    return node.nextSibling
+  }
+
+  function tagName (node) {
+    return node.tagName
+  }
+
+  function setTextContent (node, text) {
+    node.textContent = text;
+  }
+
+  function setStyleScope (node, scopeId) {
+    node.setAttribute(scopeId, '');
+  }
+
+  var nodeOps = /*#__PURE__*/Object.freeze({
+    createElement: createElement$1,
+    createElementNS: createElementNS,
+    createTextNode: createTextNode,
+    createComment: createComment,
+    insertBefore: insertBefore,
+    removeChild: removeChild,
+    appendChild: appendChild,
+    parentNode: parentNode,
+    nextSibling: nextSibling,
+    tagName: tagName,
+    setTextContent: setTextContent,
+    setStyleScope: setStyleScope
+  });
+
+  /*  */
+
+  var ref = {
+    create: function create (_, vnode) {
+      registerRef(vnode);
+    },
+    update: function update (oldVnode, vnode) {
+      if (oldVnode.data.ref !== vnode.data.ref) {
+        registerRef(oldVnode, true);
+        registerRef(vnode);
+      }
+    },
+    destroy: function destroy (vnode) {
+      registerRef(vnode, true);
+    }
+  };
+
+  function registerRef (vnode, isRemoval) {
+    var key = vnode.data.ref;
+    if (!isDef(key)) { return }
+
+    var vm = vnode.context;
+    var ref = vnode.componentInstance || vnode.elm;
+    var refs = vm.$refs;
+    if (isRemoval) {
+      if (Array.isArray(refs[key])) {
+        remove(refs[key], ref);
+      } else if (refs[key] === ref) {
+        refs[key] = undefined;
+      }
+    } else {
+      if (vnode.data.refInFor) {
+        if (!Array.isArray(refs[key])) {
+          refs[key] = [ref];
+        } else if (refs[key].indexOf(ref) < 0) {
+          // $flow-disable-line
+          refs[key].push(ref);
+        }
+      } else {
+        refs[key] = ref;
+      }
+    }
+  }
+
+  /**
+   * Virtual DOM patching algorithm based on Snabbdom by
+   * Simon Friis Vindum (@paldepind)
+   * Licensed under the MIT License
+   * https://github.com/paldepind/snabbdom/blob/master/LICENSE
+   *
+   * modified by Evan You (@yyx990803)
+   *
+   * Not type-checking this because this file is perf-critical and the cost
+   * of making flow understand it is not worth it.
+   */
+
+  var emptyNode = new VNode('', {}, []);
+
+  var hooks = ['create', 'activate', 'update', 'remove', 'destroy'];
+
+  function sameVnode (a, b) {
+    return (
+      a.key === b.key && (
+        (
+          a.tag === b.tag &&
+          a.isComment === b.isComment &&
+          isDef(a.data) === isDef(b.data) &&
+          sameInputType(a, b)
+        ) || (
+          isTrue(a.isAsyncPlaceholder) &&
+          a.asyncFactory === b.asyncFactory &&
+          isUndef(b.asyncFactory.error)
+        )
+      )
+    )
+  }
+
+  function sameInputType (a, b) {
+    if (a.tag !== 'input') { return true }
+    var i;
+    var typeA = isDef(i = a.data) && isDef(i = i.attrs) && i.type;
+    var typeB = isDef(i = b.data) && isDef(i = i.attrs) && i.type;
+    return typeA === typeB || isTextInputType(typeA) && isTextInputType(typeB)
+  }
+
+  function createKeyToOldIdx (children, beginIdx, endIdx) {
+    var i, key;
+    var map = {};
+    for (i = beginIdx; i <= endIdx; ++i) {
+      key = children[i].key;
+      if (isDef(key)) { map[key] = i; }
+    }
+    return map
+  }
+
+  function createPatchFunction (backend) {
+    var i, j;
+    var cbs = {};
+
+    var modules = backend.modules;
+    var nodeOps = backend.nodeOps;
+
+    for (i = 0; i < hooks.length; ++i) {
+      cbs[hooks[i]] = [];
+      for (j = 0; j < modules.length; ++j) {
+        if (isDef(modules[j][hooks[i]])) {
+          cbs[hooks[i]].push(modules[j][hooks[i]]);
+        }
+      }
+    }
+
+    function emptyNodeAt (elm) {
+      return new VNode(nodeOps.tagName(elm).toLowerCase(), {}, [], undefined, elm)
+    }
+
+    function createRmCb (childElm, listeners) {
+      function remove$$1 () {
+        if (--remove$$1.listeners === 0) {
+          removeNode(childElm);
+        }
+      }
+      remove$$1.listeners = listeners;
+      return remove$$1
+    }
+
+    function removeNode (el) {
+      var parent = nodeOps.parentNode(el);
+      // element may have already been removed due to v-html / v-text
+      if (isDef(parent)) {
+        nodeOps.removeChild(parent, el);
+      }
+    }
+
+    function isUnknownElement$$1 (vnode, inVPre) {
+      return (
+        !inVPre &&
+        !vnode.ns &&
+        !(
+          config.ignoredElements.length &&
+          config.ignoredElements.some(function (ignore) {
+            return isRegExp(ignore)
+              ? ignore.test(vnode.tag)
+              : ignore === vnode.tag
+          })
+        ) &&
+        config.isUnknownElement(vnode.tag)
+      )
+    }
+
+    var creatingElmInVPre = 0;
+
+    function createElm (
+      vnode,
+      insertedVnodeQueue,
+      parentElm,
+      refElm,
+      nested,
+      ownerArray,
+      index
+    ) {
+      if (isDef(vnode.elm) && isDef(ownerArray)) {
+        // This vnode was used in a previous render!
+        // now it's used as a new node, overwriting its elm would cause
+        // potential patch errors down the road when it's used as an insertion
+        // reference node. Instead, we clone the node on-demand before creating
+        // associated DOM element for it.
+        vnode = ownerArray[index] = cloneVNode(vnode);
+      }
+
+      vnode.isRootInsert = !nested; // for transition enter check
+      if (createComponent(vnode, insertedVnodeQueue, parentElm, refElm)) {
+        return
+      }
+
+      var data = vnode.data;
+      var children = vnode.children;
+      var tag = vnode.tag;
+      if (isDef(tag)) {
+        {
+          if (data && data.pre) {
+            creatingElmInVPre++;
+          }
+          if (isUnknownElement$$1(vnode, creatingElmInVPre)) {
+            warn(
+              'Unknown custom element: <' + tag + '> - did you ' +
+              'register the component correctly? For recursive components, ' +
+              'make sure to provide the "name" option.',
+              vnode.context
+            );
+          }
+        }
+
+        vnode.elm = vnode.ns
+          ? nodeOps.createElementNS(vnode.ns, tag)
+          : nodeOps.createElement(tag, vnode);
+        setScope(vnode);
+
+        /* istanbul ignore if */
+        {
+          createChildren(vnode, children, insertedVnodeQueue);
+          if (isDef(data)) {
+            invokeCreateHooks(vnode, insertedVnodeQueue);
+          }
+          insert(parentElm, vnode.elm, refElm);
+        }
+
+        if (data && data.pre) {
+          creatingElmInVPre--;
+        }
+      } else if (isTrue(vnode.isComment)) {
+        vnode.elm = nodeOps.createComment(vnode.text);
+        insert(parentElm, vnode.elm, refElm);
+      } else {
+        vnode.elm = nodeOps.createTextNode(vnode.text);
+        insert(parentElm, vnode.elm, refElm);
+      }
+    }
+
+    function createComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
+      var i = vnode.data;
+      if (isDef(i)) {
+        var isReactivated = isDef(vnode.componentInstance) && i.keepAlive;
+        if (isDef(i = i.hook) && isDef(i = i.init)) {
+          i(vnode, false /* hydrating */);
+        }
+        // after calling the init hook, if the vnode is a child component
+        // it should've created a child instance and mounted it. the child
+        // component also has set the placeholder vnode's elm.
+        // in that case we can just return the element and be done.
+        if (isDef(vnode.componentInstance)) {
+          initComponent(vnode, insertedVnodeQueue);
+          insert(parentElm, vnode.elm, refElm);
+          if (isTrue(isReactivated)) {
+            reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm);
+          }
+          return true
+        }
+      }
+    }
+
+    function initComponent (vnode, insertedVnodeQueue) {
+      if (isDef(vnode.data.pendingInsert)) {
+        insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert);
+        vnode.data.pendingInsert = null;
+      }
+      vnode.elm = vnode.componentInstance.$el;
+      if (isPatchable(vnode)) {
+        invokeCreateHooks(vnode, insertedVnodeQueue);
+        setScope(vnode);
+      } else {
+        // empty component root.
+        // skip all element-related modules except for ref (#3455)
+        registerRef(vnode);
+        // make sure to invoke the insert hook
+        insertedVnodeQueue.push(vnode);
+      }
+    }
+
+    function reactivateComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
+      var i;
+      // hack for #4339: a reactivated component with inner transition
+      // does not trigger because the inner node's created hooks are not called
+      // again. It's not ideal to involve module-specific logic in here but
+      // there doesn't seem to be a better way to do it.
+      var innerNode = vnode;
+      while (innerNode.componentInstance) {
+        innerNode = innerNode.componentInstance._vnode;
+        if (isDef(i = innerNode.data) && isDef(i = i.transition)) {
+          for (i = 0; i < cbs.activate.length; ++i) {
+            cbs.activate[i](emptyNode, innerNode);
+          }
+          insertedVnodeQueue.push(innerNode);
+          break
+        }
+      }
+      // unlike a newly created component,
+      // a reactivated keep-alive component doesn't insert itself
+      insert(parentElm, vnode.elm, refElm);
+    }
+
+    function insert (parent, elm, ref$$1) {
+      if (isDef(parent)) {
+        if (isDef(ref$$1)) {
+          if (nodeOps.parentNode(ref$$1) === parent) {
+            nodeOps.insertBefore(parent, elm, ref$$1);
+          }
+        } else {
+          nodeOps.appendChild(parent, elm);
+        }
+      }
+    }
+
+    function createChildren (vnode, children, insertedVnodeQueue) {
+      if (Array.isArray(children)) {
+        {
+          checkDuplicateKeys(children);
+        }
+        for (var i = 0; i < children.length; ++i) {
+          createElm(children[i], insertedVnodeQueue, vnode.elm, null, true, children, i);
+        }
+      } else if (isPrimitive(vnode.text)) {
+        nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(String(vnode.text)));
+      }
+    }
+
+    function isPatchable (vnode) {
+      while (vnode.componentInstance) {
+        vnode = vnode.componentInstance._vnode;
+      }
+      return isDef(vnode.tag)
+    }
+
+    function invokeCreateHooks (vnode, insertedVnodeQueue) {
+      for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
+        cbs.create[i$1](emptyNode, vnode);
+      }
+      i = vnode.data.hook; // Reuse variable
+      if (isDef(i)) {
+        if (isDef(i.create)) { i.create(emptyNode, vnode); }
+        if (isDef(i.insert)) { insertedVnodeQueue.push(vnode); }
+      }
+    }
+
+    // set scope id attribute for scoped CSS.
+    // this is implemented as a special case to avoid the overhead
+    // of going through the normal attribute patching process.
+    function setScope (vnode) {
+      var i;
+      if (isDef(i = vnode.fnScopeId)) {
+        nodeOps.setStyleScope(vnode.elm, i);
+      } else {
+        var ancestor = vnode;
+        while (ancestor) {
+          if (isDef(i = ancestor.context) && isDef(i = i.$options._scopeId)) {
+            nodeOps.setStyleScope(vnode.elm, i);
+          }
+          ancestor = ancestor.parent;
+        }
+      }
+      // for slot content they should also get the scopeId from the host instance.
+      if (isDef(i = activeInstance) &&
+        i !== vnode.context &&
+        i !== vnode.fnContext &&
+        isDef(i = i.$options._scopeId)
+      ) {
+        nodeOps.setStyleScope(vnode.elm, i);
+      }
+    }
+
+    function addVnodes (parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) {
+      for (; startIdx <= endIdx; ++startIdx) {
+        createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm, false, vnodes, startIdx);
+      }
+    }
+
+    function invokeDestroyHook (vnode) {
+      var i, j;
+      var data = vnode.data;
+      if (isDef(data)) {
+        if (isDef(i = data.hook) && isDef(i = i.destroy)) { i(vnode); }
+        for (i = 0; i < cbs.destroy.length; ++i) { cbs.destroy[i](vnode); }
+      }
+      if (isDef(i = vnode.children)) {
+        for (j = 0; j < vnode.children.length; ++j) {
+          invokeDestroyHook(vnode.children[j]);
+        }
+      }
+    }
+
+    function removeVnodes (parentElm, vnodes, startIdx, endIdx) {
+      for (; startIdx <= endIdx; ++startIdx) {
+        var ch = vnodes[startIdx];
+        if (isDef(ch)) {
+          if (isDef(ch.tag)) {
+            removeAndInvokeRemoveHook(ch);
+            invokeDestroyHook(ch);
+          } else { // Text node
+            removeNode(ch.elm);
+          }
+        }
+      }
+    }
+
+    function removeAndInvokeRemoveHook (vnode, rm) {
+      if (isDef(rm) || isDef(vnode.data)) {
+        var i;
+        var listeners = cbs.remove.length + 1;
+        if (isDef(rm)) {
+          // we have a recursively passed down rm callback
+          // increase the listeners count
+          rm.listeners += listeners;
+        } else {
+          // directly removing
+          rm = createRmCb(vnode.elm, listeners);
+        }
+        // recursively invoke hooks on child component root node
+        if (isDef(i = vnode.componentInstance) && isDef(i = i._vnode) && isDef(i.data)) {
+          removeAndInvokeRemoveHook(i, rm);
+        }
+        for (i = 0; i < cbs.remove.length; ++i) {
+          cbs.remove[i](vnode, rm);
+        }
+        if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) {
+          i(vnode, rm);
+        } else {
+          rm();
+        }
+      } else {
+        removeNode(vnode.elm);
+      }
+    }
+
+    function updateChildren (parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) {
+      var oldStartIdx = 0;
+      var newStartIdx = 0;
+      var oldEndIdx = oldCh.length - 1;
+      var oldStartVnode = oldCh[0];
+      var oldEndVnode = oldCh[oldEndIdx];
+      var newEndIdx = newCh.length - 1;
+      var newStartVnode = newCh[0];
+      var newEndVnode = newCh[newEndIdx];
+      var oldKeyToIdx, idxInOld, vnodeToMove, refElm;
+
+      // removeOnly is a special flag used only by <transition-group>
+      // to ensure removed elements stay in correct relative positions
+      // during leaving transitions
+      var canMove = !removeOnly;
+
+      {
+        checkDuplicateKeys(newCh);
+      }
+
+      while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {
+        if (isUndef(oldStartVnode)) {
+          oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left
+        } else if (isUndef(oldEndVnode)) {
+          oldEndVnode = oldCh[--oldEndIdx];
+        } else if (sameVnode(oldStartVnode, newStartVnode)) {
+          patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
+          oldStartVnode = oldCh[++oldStartIdx];
+          newStartVnode = newCh[++newStartIdx];
+        } else if (sameVnode(oldEndVnode, newEndVnode)) {
+          patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
+          oldEndVnode = oldCh[--oldEndIdx];
+          newEndVnode = newCh[--newEndIdx];
+        } else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right
+          patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
+          canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm));
+          oldStartVnode = oldCh[++oldStartIdx];
+          newEndVnode = newCh[--newEndIdx];
+        } else if (sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left
+          patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
+          canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm);
+          oldEndVnode = oldCh[--oldEndIdx];
+          newStartVnode = newCh[++newStartIdx];
+        } else {
+          if (isUndef(oldKeyToIdx)) { oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx); }
+          idxInOld = isDef(newStartVnode.key)
+            ? oldKeyToIdx[newStartVnode.key]
+            : findIdxInOld(newStartVnode, oldCh, oldStartIdx, oldEndIdx);
+          if (isUndef(idxInOld)) { // New element
+            createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
+          } else {
+            vnodeToMove = oldCh[idxInOld];
+            if (sameVnode(vnodeToMove, newStartVnode)) {
+              patchVnode(vnodeToMove, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
+              oldCh[idxInOld] = undefined;
+              canMove && nodeOps.insertBefore(parentElm, vnodeToMove.elm, oldStartVnode.elm);
+            } else {
+              // same key but different element. treat as new element
+              createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
+            }
+          }
+          newStartVnode = newCh[++newStartIdx];
+        }
+      }
+      if (oldStartIdx > oldEndIdx) {
+        refElm = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
+        addVnodes(parentElm, refElm, newCh, newStartIdx, newEndIdx, insertedVnodeQueue);
+      } else if (newStartIdx > newEndIdx) {
+        removeVnodes(parentElm, oldCh, oldStartIdx, oldEndIdx);
+      }
+    }
+
+    function checkDuplicateKeys (children) {
+      var seenKeys = {};
+      for (var i = 0; i < children.length; i++) {
+        var vnode = children[i];
+        var key = vnode.key;
+        if (isDef(key)) {
+          if (seenKeys[key]) {
+            warn(
+              ("Duplicate keys detected: '" + key + "'. This may cause an update error."),
+              vnode.context
+            );
+          } else {
+            seenKeys[key] = true;
+          }
+        }
+      }
+    }
+
+    function findIdxInOld (node, oldCh, start, end) {
+      for (var i = start; i < end; i++) {
+        var c = oldCh[i];
+        if (isDef(c) && sameVnode(node, c)) { return i }
+      }
+    }
+
+    function patchVnode (
+      oldVnode,
+      vnode,
+      insertedVnodeQueue,
+      ownerArray,
+      index,
+      removeOnly
+    ) {
+      if (oldVnode === vnode) {
+        return
+      }
+
+      if (isDef(vnode.elm) && isDef(ownerArray)) {
+        // clone reused vnode
+        vnode = ownerArray[index] = cloneVNode(vnode);
+      }
+
+      var elm = vnode.elm = oldVnode.elm;
+
+      if (isTrue(oldVnode.isAsyncPlaceholder)) {
+        if (isDef(vnode.asyncFactory.resolved)) {
+          hydrate(oldVnode.elm, vnode, insertedVnodeQueue);
+        } else {
+          vnode.isAsyncPlaceholder = true;
+        }
+        return
+      }
+
+      // reuse element for static trees.
+      // note we only do this if the vnode is cloned -
+      // if the new node is not cloned it means the render functions have been
+      // reset by the hot-reload-api and we need to do a proper re-render.
+      if (isTrue(vnode.isStatic) &&
+        isTrue(oldVnode.isStatic) &&
+        vnode.key === oldVnode.key &&
+        (isTrue(vnode.isCloned) || isTrue(vnode.isOnce))
+      ) {
+        vnode.componentInstance = oldVnode.componentInstance;
+        return
+      }
+
+      var i;
+      var data = vnode.data;
+      if (isDef(data) && isDef(i = data.hook) && isDef(i = i.prepatch)) {
+        i(oldVnode, vnode);
+      }
+
+      var oldCh = oldVnode.children;
+      var ch = vnode.children;
+      if (isDef(data) && isPatchable(vnode)) {
+        for (i = 0; i < cbs.update.length; ++i) { cbs.update[i](oldVnode, vnode); }
+        if (isDef(i = data.hook) && isDef(i = i.update)) { i(oldVnode, vnode); }
+      }
+      if (isUndef(vnode.text)) {
+        if (isDef(oldCh) && isDef(ch)) {
+          if (oldCh !== ch) { updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly); }
+        } else if (isDef(ch)) {
+          {
+            checkDuplicateKeys(ch);
+          }
+          if (isDef(oldVnode.text)) { nodeOps.setTextContent(elm, ''); }
+          addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue);
+        } else if (isDef(oldCh)) {
+          removeVnodes(elm, oldCh, 0, oldCh.length - 1);
+        } else if (isDef(oldVnode.text)) {
+          nodeOps.setTextContent(elm, '');
+        }
+      } else if (oldVnode.text !== vnode.text) {
+        nodeOps.setTextContent(elm, vnode.text);
+      }
+      if (isDef(data)) {
+        if (isDef(i = data.hook) && isDef(i = i.postpatch)) { i(oldVnode, vnode); }
+      }
+    }
+
+    function invokeInsertHook (vnode, queue, initial) {
+      // delay insert hooks for component root nodes, invoke them after the
+      // element is really inserted
+      if (isTrue(initial) && isDef(vnode.parent)) {
+        vnode.parent.data.pendingInsert = queue;
+      } else {
+        for (var i = 0; i < queue.length; ++i) {
+          queue[i].data.hook.insert(queue[i]);
+        }
+      }
+    }
+
+    var hydrationBailed = false;
+    // list of modules that can skip create hook during hydration because they
+    // are already rendered on the client or has no need for initialization
+    // Note: style is excluded because it relies on initial clone for future
+    // deep updates (#7063).
+    var isRenderedModule = makeMap('attrs,class,staticClass,staticStyle,key');
+
+    // Note: this is a browser-only function so we can assume elms are DOM nodes.
+    function hydrate (elm, vnode, insertedVnodeQueue, inVPre) {
+      var i;
+      var tag = vnode.tag;
+      var data = vnode.data;
+      var children = vnode.children;
+      inVPre = inVPre || (data && data.pre);
+      vnode.elm = elm;
+
+      if (isTrue(vnode.isComment) && isDef(vnode.asyncFactory)) {
+        vnode.isAsyncPlaceholder = true;
+        return true
+      }
+      // assert node match
+      {
+        if (!assertNodeMatch(elm, vnode, inVPre)) {
+          return false
+        }
+      }
+      if (isDef(data)) {
+        if (isDef(i = data.hook) && isDef(i = i.init)) { i(vnode, true /* hydrating */); }
+        if (isDef(i = vnode.componentInstance)) {
+          // child component. it should have hydrated its own tree.
+          initComponent(vnode, insertedVnodeQueue);
+          return true
+        }
+      }
+      if (isDef(tag)) {
+        if (isDef(children)) {
+          // empty element, allow client to pick up and populate children
+          if (!elm.hasChildNodes()) {
+            createChildren(vnode, children, insertedVnodeQueue);
+          } else {
+            // v-html and domProps: innerHTML
+            if (isDef(i = data) && isDef(i = i.domProps) && isDef(i = i.innerHTML)) {
+              if (i !== elm.innerHTML) {
+                /* istanbul ignore if */
+                if (typeof console !== 'undefined' &&
+                  !hydrationBailed
+                ) {
+                  hydrationBailed = true;
+                  console.warn('Parent: ', elm);
+                  console.warn('server innerHTML: ', i);
+                  console.warn('client innerHTML: ', elm.innerHTML);
+                }
+                return false
+              }
+            } else {
+              // iterate and compare children lists
+              var childrenMatch = true;
+              var childNode = elm.firstChild;
+              for (var i$1 = 0; i$1 < children.length; i$1++) {
+                if (!childNode || !hydrate(childNode, children[i$1], insertedVnodeQueue, inVPre)) {
+                  childrenMatch = false;
+                  break
+                }
+                childNode = childNode.nextSibling;
+              }
+              // if childNode is not null, it means the actual childNodes list is
+              // longer than the virtual children list.
+              if (!childrenMatch || childNode) {
+                /* istanbul ignore if */
+                if (typeof console !== 'undefined' &&
+                  !hydrationBailed
+                ) {
+                  hydrationBailed = true;
+                  console.warn('Parent: ', elm);
+                  console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children);
+                }
+                return false
+              }
+            }
+          }
+        }
+        if (isDef(data)) {
+          var fullInvoke = false;
+          for (var key in data) {
+            if (!isRenderedModule(key)) {
+              fullInvoke = true;
+              invokeCreateHooks(vnode, insertedVnodeQueue);
+              break
+            }
+          }
+          if (!fullInvoke && data['class']) {
+            // ensure collecting deps for deep class bindings for future updates
+            traverse(data['class']);
+          }
+        }
+      } else if (elm.data !== vnode.text) {
+        elm.data = vnode.text;
+      }
+      return true
+    }
+
+    function assertNodeMatch (node, vnode, inVPre) {
+      if (isDef(vnode.tag)) {
+        return vnode.tag.indexOf('vue-component') === 0 || (
+          !isUnknownElement$$1(vnode, inVPre) &&
+          vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase())
+        )
+      } else {
+        return node.nodeType === (vnode.isComment ? 8 : 3)
+      }
+    }
+
+    return function patch (oldVnode, vnode, hydrating, removeOnly) {
+      if (isUndef(vnode)) {
+        if (isDef(oldVnode)) { invokeDestroyHook(oldVnode); }
+        return
+      }
+
+      var isInitialPatch = false;
+      var insertedVnodeQueue = [];
+
+      if (isUndef(oldVnode)) {
+        // empty mount (likely as component), create new root element
+        isInitialPatch = true;
+        createElm(vnode, insertedVnodeQueue);
+      } else {
+        var isRealElement = isDef(oldVnode.nodeType);
+        if (!isRealElement && sameVnode(oldVnode, vnode)) {
+          // patch existing root node
+          patchVnode(oldVnode, vnode, insertedVnodeQueue, null, null, removeOnly);
+        } else {
+          if (isRealElement) {
+            // mounting to a real element
+            // check if this is server-rendered content and if we can perform
+            // a successful hydration.
+            if (oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) {
+              oldVnode.removeAttribute(SSR_ATTR);
+              hydrating = true;
+            }
+            if (isTrue(hydrating)) {
+              if (hydrate(oldVnode, vnode, insertedVnodeQueue)) {
+                invokeInsertHook(vnode, insertedVnodeQueue, true);
+                return oldVnode
+              } else {
+                warn(
+                  'The client-side rendered virtual DOM tree is not matching ' +
+                  'server-rendered content. This is likely caused by incorrect ' +
+                  'HTML markup, for example nesting block-level elements inside ' +
+                  '<p>, or missing <tbody>. Bailing hydration and performing ' +
+                  'full client-side render.'
+                );
+              }
+            }
+            // either not server-rendered, or hydration failed.
+            // create an empty node and replace it
+            oldVnode = emptyNodeAt(oldVnode);
+          }
+
+          // replacing existing element
+          var oldElm = oldVnode.elm;
+          var parentElm = nodeOps.parentNode(oldElm);
+
+          // create new node
+          createElm(
+            vnode,
+            insertedVnodeQueue,
+            // extremely rare edge case: do not insert if old element is in a
+            // leaving transition. Only happens when combining transition +
+            // keep-alive + HOCs. (#4590)
+            oldElm._leaveCb ? null : parentElm,
+            nodeOps.nextSibling(oldElm)
+          );
+
+          // update parent placeholder node element, recursively
+          if (isDef(vnode.parent)) {
+            var ancestor = vnode.parent;
+            var patchable = isPatchable(vnode);
+            while (ancestor) {
+              for (var i = 0; i < cbs.destroy.length; ++i) {
+                cbs.destroy[i](ancestor);
+              }
+              ancestor.elm = vnode.elm;
+              if (patchable) {
+                for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
+                  cbs.create[i$1](emptyNode, ancestor);
+                }
+                // #6513
+                // invoke insert hooks that may have been merged by create hooks.
+                // e.g. for directives that uses the "inserted" hook.
+                var insert = ancestor.data.hook.insert;
+                if (insert.merged) {
+                  // start at index 1 to avoid re-invoking component mounted hook
+                  for (var i$2 = 1; i$2 < insert.fns.length; i$2++) {
+                    insert.fns[i$2]();
+                  }
+                }
+              } else {
+                registerRef(ancestor);
+              }
+              ancestor = ancestor.parent;
+            }
+          }
+
+          // destroy old node
+          if (isDef(parentElm)) {
+            removeVnodes(parentElm, [oldVnode], 0, 0);
+          } else if (isDef(oldVnode.tag)) {
+            invokeDestroyHook(oldVnode);
+          }
+        }
+      }
+
+      invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch);
+      return vnode.elm
+    }
+  }
+
+  /*  */
+
+  var directives = {
+    create: updateDirectives,
+    update: updateDirectives,
+    destroy: function unbindDirectives (vnode) {
+      updateDirectives(vnode, emptyNode);
+    }
+  };
+
+  function updateDirectives (oldVnode, vnode) {
+    if (oldVnode.data.directives || vnode.data.directives) {
+      _update(oldVnode, vnode);
+    }
+  }
+
+  function _update (oldVnode, vnode) {
+    var isCreate = oldVnode === emptyNode;
+    var isDestroy = vnode === emptyNode;
+    var oldDirs = normalizeDirectives$1(oldVnode.data.directives, oldVnode.context);
+    var newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context);
+
+    var dirsWithInsert = [];
+    var dirsWithPostpatch = [];
+
+    var key, oldDir, dir;
+    for (key in newDirs) {
+      oldDir = oldDirs[key];
+      dir = newDirs[key];
+      if (!oldDir) {
+        // new directive, bind
+        callHook$1(dir, 'bind', vnode, oldVnode);
+        if (dir.def && dir.def.inserted) {
+          dirsWithInsert.push(dir);
+        }
+      } else {
+        // existing directive, update
+        dir.oldValue = oldDir.value;
+        dir.oldArg = oldDir.arg;
+        callHook$1(dir, 'update', vnode, oldVnode);
+        if (dir.def && dir.def.componentUpdated) {
+          dirsWithPostpatch.push(dir);
+        }
+      }
+    }
+
+    if (dirsWithInsert.length) {
+      var callInsert = function () {
+        for (var i = 0; i < dirsWithInsert.length; i++) {
+          callHook$1(dirsWithInsert[i], 'inserted', vnode, oldVnode);
+        }
+      };
+      if (isCreate) {
+        mergeVNodeHook(vnode, 'insert', callInsert);
+      } else {
+        callInsert();
+      }
+    }
+
+    if (dirsWithPostpatch.length) {
+      mergeVNodeHook(vnode, 'postpatch', function () {
+        for (var i = 0; i < dirsWithPostpatch.length; i++) {
+          callHook$1(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode);
+        }
+      });
+    }
+
+    if (!isCreate) {
+      for (key in oldDirs) {
+        if (!newDirs[key]) {
+          // no longer present, unbind
+          callHook$1(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy);
+        }
+      }
+    }
+  }
+
+  var emptyModifiers = Object.create(null);
+
+  function normalizeDirectives$1 (
+    dirs,
+    vm
+  ) {
+    var res = Object.create(null);
+    if (!dirs) {
+      // $flow-disable-line
+      return res
+    }
+    var i, dir;
+    for (i = 0; i < dirs.length; i++) {
+      dir = dirs[i];
+      if (!dir.modifiers) {
+        // $flow-disable-line
+        dir.modifiers = emptyModifiers;
+      }
+      res[getRawDirName(dir)] = dir;
+      dir.def = resolveAsset(vm.$options, 'directives', dir.name, true);
+    }
+    // $flow-disable-line
+    return res
+  }
+
+  function getRawDirName (dir) {
+    return dir.rawName || ((dir.name) + "." + (Object.keys(dir.modifiers || {}).join('.')))
+  }
+
+  function callHook$1 (dir, hook, vnode, oldVnode, isDestroy) {
+    var fn = dir.def && dir.def[hook];
+    if (fn) {
+      try {
+        fn(vnode.elm, dir, vnode, oldVnode, isDestroy);
+      } catch (e) {
+        handleError(e, vnode.context, ("directive " + (dir.name) + " " + hook + " hook"));
+      }
+    }
+  }
+
+  var baseModules = [
+    ref,
+    directives
+  ];
+
+  /*  */
+
+  function updateAttrs (oldVnode, vnode) {
+    var opts = vnode.componentOptions;
+    if (isDef(opts) && opts.Ctor.options.inheritAttrs === false) {
+      return
+    }
+    if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {
+      return
+    }
+    var key, cur, old;
+    var elm = vnode.elm;
+    var oldAttrs = oldVnode.data.attrs || {};
+    var attrs = vnode.data.attrs || {};
+    // clone observed objects, as the user probably wants to mutate it
+    if (isDef(attrs.__ob__)) {
+      attrs = vnode.data.attrs = extend({}, attrs);
+    }
+
+    for (key in attrs) {
+      cur = attrs[key];
+      old = oldAttrs[key];
+      if (old !== cur) {
+        setAttr(elm, key, cur);
+      }
+    }
+    // #4391: in IE9, setting type can reset value for input[type=radio]
+    // #6666: IE/Edge forces progress value down to 1 before setting a max
+    /* istanbul ignore if */
+    if ((isIE || isEdge) && attrs.value !== oldAttrs.value) {
+      setAttr(elm, 'value', attrs.value);
+    }
+    for (key in oldAttrs) {
+      if (isUndef(attrs[key])) {
+        if (isXlink(key)) {
+          elm.removeAttributeNS(xlinkNS, getXlinkProp(key));
+        } else if (!isEnumeratedAttr(key)) {
+          elm.removeAttribute(key);
+        }
+      }
+    }
+  }
+
+  function setAttr (el, key, value) {
+    if (el.tagName.indexOf('-') > -1) {
+      baseSetAttr(el, key, value);
+    } else if (isBooleanAttr(key)) {
+      // set attribute for blank value
+      // e.g. <option disabled>Select one</option>
+      if (isFalsyAttrValue(value)) {
+        el.removeAttribute(key);
+      } else {
+        // technically allowfullscreen is a boolean attribute for <iframe>,
+        // but Flash expects a value of "true" when used on <embed> tag
+        value = key === 'allowfullscreen' && el.tagName === 'EMBED'
+          ? 'true'
+          : key;
+        el.setAttribute(key, value);
+      }
+    } else if (isEnumeratedAttr(key)) {
+      el.setAttribute(key, convertEnumeratedValue(key, value));
+    } else if (isXlink(key)) {
+      if (isFalsyAttrValue(value)) {
+        el.removeAttributeNS(xlinkNS, getXlinkProp(key));
+      } else {
+        el.setAttributeNS(xlinkNS, key, value);
+      }
+    } else {
+      baseSetAttr(el, key, value);
+    }
+  }
+
+  function baseSetAttr (el, key, value) {
+    if (isFalsyAttrValue(value)) {
+      el.removeAttribute(key);
+    } else {
+      // #7138: IE10 & 11 fires input event when setting placeholder on
+      // <textarea>... block the first input event and remove the blocker
+      // immediately.
+      /* istanbul ignore if */
+      if (
+        isIE && !isIE9 &&
+        el.tagName === 'TEXTAREA' &&
+        key === 'placeholder' && value !== '' && !el.__ieph
+      ) {
+        var blocker = function (e) {
+          e.stopImmediatePropagation();
+          el.removeEventListener('input', blocker);
+        };
+        el.addEventListener('input', blocker);
+        // $flow-disable-line
+        el.__ieph = true; /* IE placeholder patched */
+      }
+      el.setAttribute(key, value);
+    }
+  }
+
+  var attrs = {
+    create: updateAttrs,
+    update: updateAttrs
+  };
+
+  /*  */
+
+  function updateClass (oldVnode, vnode) {
+    var el = vnode.elm;
+    var data = vnode.data;
+    var oldData = oldVnode.data;
+    if (
+      isUndef(data.staticClass) &&
+      isUndef(data.class) && (
+        isUndef(oldData) || (
+          isUndef(oldData.staticClass) &&
+          isUndef(oldData.class)
+        )
+      )
+    ) {
+      return
+    }
+
+    var cls = genClassForVnode(vnode);
+
+    // handle transition classes
+    var transitionClass = el._transitionClasses;
+    if (isDef(transitionClass)) {
+      cls = concat(cls, stringifyClass(transitionClass));
+    }
+
+    // set the class
+    if (cls !== el._prevClass) {
+      el.setAttribute('class', cls);
+      el._prevClass = cls;
+    }
+  }
+
+  var klass = {
+    create: updateClass,
+    update: updateClass
+  };
+
+  /*  */
+
+  var validDivisionCharRE = /[\w).+\-_$\]]/;
+
+  function parseFilters (exp) {
+    var inSingle = false;
+    var inDouble = false;
+    var inTemplateString = false;
+    var inRegex = false;
+    var curly = 0;
+    var square = 0;
+    var paren = 0;
+    var lastFilterIndex = 0;
+    var c, prev, i, expression, filters;
+
+    for (i = 0; i < exp.length; i++) {
+      prev = c;
+      c = exp.charCodeAt(i);
+      if (inSingle) {
+        if (c === 0x27 && prev !== 0x5C) { inSingle = false; }
+      } else if (inDouble) {
+        if (c === 0x22 && prev !== 0x5C) { inDouble = false; }
+      } else if (inTemplateString) {
+        if (c === 0x60 && prev !== 0x5C) { inTemplateString = false; }
+      } else if (inRegex) {
+        if (c === 0x2f && prev !== 0x5C) { inRegex = false; }
+      } else if (
+        c === 0x7C && // pipe
+        exp.charCodeAt(i + 1) !== 0x7C &&
+        exp.charCodeAt(i - 1) !== 0x7C &&
+        !curly && !square && !paren
+      ) {
+        if (expression === undefined) {
+          // first filter, end of expression
+          lastFilterIndex = i + 1;
+          expression = exp.slice(0, i).trim();
+        } else {
+          pushFilter();
+        }
+      } else {
+        switch (c) {
+          case 0x22: inDouble = true; break         // "
+          case 0x27: inSingle = true; break         // '
+          case 0x60: inTemplateString = true; break // `
+          case 0x28: paren++; break                 // (
+          case 0x29: paren--; break                 // )
+          case 0x5B: square++; break                // [
+          case 0x5D: square--; break                // ]
+          case 0x7B: curly++; break                 // {
+          case 0x7D: curly--; break                 // }
+        }
+        if (c === 0x2f) { // /
+          var j = i - 1;
+          var p = (void 0);
+          // find first non-whitespace prev char
+          for (; j >= 0; j--) {
+            p = exp.charAt(j);
+            if (p !== ' ') { break }
+          }
+          if (!p || !validDivisionCharRE.test(p)) {
+            inRegex = true;
+          }
+        }
+      }
+    }
+
+    if (expression === undefined) {
+      expression = exp.slice(0, i).trim();
+    } else if (lastFilterIndex !== 0) {
+      pushFilter();
+    }
+
+    function pushFilter () {
+      (filters || (filters = [])).push(exp.slice(lastFilterIndex, i).trim());
+      lastFilterIndex = i + 1;
+    }
+
+    if (filters) {
+      for (i = 0; i < filters.length; i++) {
+        expression = wrapFilter(expression, filters[i]);
+      }
+    }
+
+    return expression
+  }
+
+  function wrapFilter (exp, filter) {
+    var i = filter.indexOf('(');
+    if (i < 0) {
+      // _f: resolveFilter
+      return ("_f(\"" + filter + "\")(" + exp + ")")
+    } else {
+      var name = filter.slice(0, i);
+      var args = filter.slice(i + 1);
+      return ("_f(\"" + name + "\")(" + exp + (args !== ')' ? ',' + args : args))
+    }
+  }
+
+  /*  */
+
+
+
+  /* eslint-disable no-unused-vars */
+  function baseWarn (msg, range) {
+    console.error(("[Vue compiler]: " + msg));
+  }
+  /* eslint-enable no-unused-vars */
+
+  function pluckModuleFunction (
+    modules,
+    key
+  ) {
+    return modules
+      ? modules.map(function (m) { return m[key]; }).filter(function (_) { return _; })
+      : []
+  }
+
+  function addProp (el, name, value, range, dynamic) {
+    (el.props || (el.props = [])).push(rangeSetItem({ name: name, value: value, dynamic: dynamic }, range));
+    el.plain = false;
+  }
+
+  function addAttr (el, name, value, range, dynamic) {
+    var attrs = dynamic
+      ? (el.dynamicAttrs || (el.dynamicAttrs = []))
+      : (el.attrs || (el.attrs = []));
+    attrs.push(rangeSetItem({ name: name, value: value, dynamic: dynamic }, range));
+    el.plain = false;
+  }
+
+  // add a raw attr (use this in preTransforms)
+  function addRawAttr (el, name, value, range) {
+    el.attrsMap[name] = value;
+    el.attrsList.push(rangeSetItem({ name: name, value: value }, range));
+  }
+
+  function addDirective (
+    el,
+    name,
+    rawName,
+    value,
+    arg,
+    isDynamicArg,
+    modifiers,
+    range
+  ) {
+    (el.directives || (el.directives = [])).push(rangeSetItem({
+      name: name,
+      rawName: rawName,
+      value: value,
+      arg: arg,
+      isDynamicArg: isDynamicArg,
+      modifiers: modifiers
+    }, range));
+    el.plain = false;
+  }
+
+  function prependModifierMarker (symbol, name, dynamic) {
+    return dynamic
+      ? ("_p(" + name + ",\"" + symbol + "\")")
+      : symbol + name // mark the event as captured
+  }
+
+  function addHandler (
+    el,
+    name,
+    value,
+    modifiers,
+    important,
+    warn,
+    range,
+    dynamic
+  ) {
+    modifiers = modifiers || emptyObject;
+    // warn prevent and passive modifier
+    /* istanbul ignore if */
+    if (
+      warn &&
+      modifiers.prevent && modifiers.passive
+    ) {
+      warn(
+        'passive and prevent can\'t be used together. ' +
+        'Passive handler can\'t prevent default event.',
+        range
+      );
+    }
+
+    // normalize click.right and click.middle since they don't actually fire
+    // this is technically browser-specific, but at least for now browsers are
+    // the only target envs that have right/middle clicks.
+    if (modifiers.right) {
+      if (dynamic) {
+        name = "(" + name + ")==='click'?'contextmenu':(" + name + ")";
+      } else if (name === 'click') {
+        name = 'contextmenu';
+        delete modifiers.right;
+      }
+    } else if (modifiers.middle) {
+      if (dynamic) {
+        name = "(" + name + ")==='click'?'mouseup':(" + name + ")";
+      } else if (name === 'click') {
+        name = 'mouseup';
+      }
+    }
+
+    // check capture modifier
+    if (modifiers.capture) {
+      delete modifiers.capture;
+      name = prependModifierMarker('!', name, dynamic);
+    }
+    if (modifiers.once) {
+      delete modifiers.once;
+      name = prependModifierMarker('~', name, dynamic);
+    }
+    /* istanbul ignore if */
+    if (modifiers.passive) {
+      delete modifiers.passive;
+      name = prependModifierMarker('&', name, dynamic);
+    }
+
+    var events;
+    if (modifiers.native) {
+      delete modifiers.native;
+      events = el.nativeEvents || (el.nativeEvents = {});
+    } else {
+      events = el.events || (el.events = {});
+    }
+
+    var newHandler = rangeSetItem({ value: value.trim(), dynamic: dynamic }, range);
+    if (modifiers !== emptyObject) {
+      newHandler.modifiers = modifiers;
+    }
+
+    var handlers = events[name];
+    /* istanbul ignore if */
+    if (Array.isArray(handlers)) {
+      important ? handlers.unshift(newHandler) : handlers.push(newHandler);
+    } else if (handlers) {
+      events[name] = important ? [newHandler, handlers] : [handlers, newHandler];
+    } else {
+      events[name] = newHandler;
+    }
+
+    el.plain = false;
+  }
+
+  function getRawBindingAttr (
+    el,
+    name
+  ) {
+    return el.rawAttrsMap[':' + name] ||
+      el.rawAttrsMap['v-bind:' + name] ||
+      el.rawAttrsMap[name]
+  }
+
+  function getBindingAttr (
+    el,
+    name,
+    getStatic
+  ) {
+    var dynamicValue =
+      getAndRemoveAttr(el, ':' + name) ||
+      getAndRemoveAttr(el, 'v-bind:' + name);
+    if (dynamicValue != null) {
+      return parseFilters(dynamicValue)
+    } else if (getStatic !== false) {
+      var staticValue = getAndRemoveAttr(el, name);
+      if (staticValue != null) {
+        return JSON.stringify(staticValue)
+      }
+    }
+  }
+
+  // note: this only removes the attr from the Array (attrsList) so that it
+  // doesn't get processed by processAttrs.
+  // By default it does NOT remove it from the map (attrsMap) because the map is
+  // needed during codegen.
+  function getAndRemoveAttr (
+    el,
+    name,
+    removeFromMap
+  ) {
+    var val;
+    if ((val = el.attrsMap[name]) != null) {
+      var list = el.attrsList;
+      for (var i = 0, l = list.length; i < l; i++) {
+        if (list[i].name === name) {
+          list.splice(i, 1);
+          break
+        }
+      }
+    }
+    if (removeFromMap) {
+      delete el.attrsMap[name];
+    }
+    return val
+  }
+
+  function getAndRemoveAttrByRegex (
+    el,
+    name
+  ) {
+    var list = el.attrsList;
+    for (var i = 0, l = list.length; i < l; i++) {
+      var attr = list[i];
+      if (name.test(attr.name)) {
+        list.splice(i, 1);
+        return attr
+      }
+    }
+  }
+
+  function rangeSetItem (
+    item,
+    range
+  ) {
+    if (range) {
+      if (range.start != null) {
+        item.start = range.start;
+      }
+      if (range.end != null) {
+        item.end = range.end;
+      }
+    }
+    return item
+  }
+
+  /*  */
+
+  /**
+   * Cross-platform code generation for component v-model
+   */
+  function genComponentModel (
+    el,
+    value,
+    modifiers
+  ) {
+    var ref = modifiers || {};
+    var number = ref.number;
+    var trim = ref.trim;
+
+    var baseValueExpression = '$$v';
+    var valueExpression = baseValueExpression;
+    if (trim) {
+      valueExpression =
+        "(typeof " + baseValueExpression + " === 'string'" +
+        "? " + baseValueExpression + ".trim()" +
+        ": " + baseValueExpression + ")";
+    }
+    if (number) {
+      valueExpression = "_n(" + valueExpression + ")";
+    }
+    var assignment = genAssignmentCode(value, valueExpression);
+
+    el.model = {
+      value: ("(" + value + ")"),
+      expression: JSON.stringify(value),
+      callback: ("function (" + baseValueExpression + ") {" + assignment + "}")
+    };
+  }
+
+  /**
+   * Cross-platform codegen helper for generating v-model value assignment code.
+   */
+  function genAssignmentCode (
+    value,
+    assignment
+  ) {
+    var res = parseModel(value);
+    if (res.key === null) {
+      return (value + "=" + assignment)
+    } else {
+      return ("$set(" + (res.exp) + ", " + (res.key) + ", " + assignment + ")")
+    }
+  }
+
+  /**
+   * Parse a v-model expression into a base path and a final key segment.
+   * Handles both dot-path and possible square brackets.
+   *
+   * Possible cases:
+   *
+   * - test
+   * - test[key]
+   * - test[test1[key]]
+   * - test["a"][key]
+   * - xxx.test[a[a].test1[key]]
+   * - test.xxx.a["asa"][test1[key]]
+   *
+   */
+
+  var len, str, chr, index$1, expressionPos, expressionEndPos;
+
+
+
+  function parseModel (val) {
+    // Fix https://github.com/vuejs/vue/pull/7730
+    // allow v-model="obj.val " (trailing whitespace)
+    val = val.trim();
+    len = val.length;
+
+    if (val.indexOf('[') < 0 || val.lastIndexOf(']') < len - 1) {
+      index$1 = val.lastIndexOf('.');
+      if (index$1 > -1) {
+        return {
+          exp: val.slice(0, index$1),
+          key: '"' + val.slice(index$1 + 1) + '"'
+        }
+      } else {
+        return {
+          exp: val,
+          key: null
+        }
+      }
+    }
+
+    str = val;
+    index$1 = expressionPos = expressionEndPos = 0;
+
+    while (!eof()) {
+      chr = next();
+      /* istanbul ignore if */
+      if (isStringStart(chr)) {
+        parseString(chr);
+      } else if (chr === 0x5B) {
+        parseBracket(chr);
+      }
+    }
+
+    return {
+      exp: val.slice(0, expressionPos),
+      key: val.slice(expressionPos + 1, expressionEndPos)
+    }
+  }
+
+  function next () {
+    return str.charCodeAt(++index$1)
+  }
+
+  function eof () {
+    return index$1 >= len
+  }
+
+  function isStringStart (chr) {
+    return chr === 0x22 || chr === 0x27
+  }
+
+  function parseBracket (chr) {
+    var inBracket = 1;
+    expressionPos = index$1;
+    while (!eof()) {
+      chr = next();
+      if (isStringStart(chr)) {
+        parseString(chr);
+        continue
+      }
+      if (chr === 0x5B) { inBracket++; }
+      if (chr === 0x5D) { inBracket--; }
+      if (inBracket === 0) {
+        expressionEndPos = index$1;
+        break
+      }
+    }
+  }
+
+  function parseString (chr) {
+    var stringQuote = chr;
+    while (!eof()) {
+      chr = next();
+      if (chr === stringQuote) {
+        break
+      }
+    }
+  }
+
+  /*  */
+
+  var warn$1;
+
+  // in some cases, the event used has to be determined at runtime
+  // so we used some reserved tokens during compile.
+  var RANGE_TOKEN = '__r';
+  var CHECKBOX_RADIO_TOKEN = '__c';
+
+  function model (
+    el,
+    dir,
+    _warn
+  ) {
+    warn$1 = _warn;
+    var value = dir.value;
+    var modifiers = dir.modifiers;
+    var tag = el.tag;
+    var type = el.attrsMap.type;
+
+    {
+      // inputs with type="file" are read only and setting the input's
+      // value will throw an error.
+      if (tag === 'input' && type === 'file') {
+        warn$1(
+          "<" + (el.tag) + " v-model=\"" + value + "\" type=\"file\">:\n" +
+          "File inputs are read only. Use a v-on:change listener instead.",
+          el.rawAttrsMap['v-model']
+        );
+      }
+    }
+
+    if (el.component) {
+      genComponentModel(el, value, modifiers);
+      // component v-model doesn't need extra runtime
+      return false
+    } else if (tag === 'select') {
+      genSelect(el, value, modifiers);
+    } else if (tag === 'input' && type === 'checkbox') {
+      genCheckboxModel(el, value, modifiers);
+    } else if (tag === 'input' && type === 'radio') {
+      genRadioModel(el, value, modifiers);
+    } else if (tag === 'input' || tag === 'textarea') {
+      genDefaultModel(el, value, modifiers);
+    } else if (!config.isReservedTag(tag)) {
+      genComponentModel(el, value, modifiers);
+      // component v-model doesn't need extra runtime
+      return false
+    } else {
+      warn$1(
+        "<" + (el.tag) + " v-model=\"" + value + "\">: " +
+        "v-model is not supported on this element type. " +
+        'If you are working with contenteditable, it\'s recommended to ' +
+        'wrap a library dedicated for that purpose inside a custom component.',
+        el.rawAttrsMap['v-model']
+      );
+    }
+
+    // ensure runtime directive metadata
+    return true
+  }
+
+  function genCheckboxModel (
+    el,
+    value,
+    modifiers
+  ) {
+    var number = modifiers && modifiers.number;
+    var valueBinding = getBindingAttr(el, 'value') || 'null';
+    var trueValueBinding = getBindingAttr(el, 'true-value') || 'true';
+    var falseValueBinding = getBindingAttr(el, 'false-value') || 'false';
+    addProp(el, 'checked',
+      "Array.isArray(" + value + ")" +
+      "?_i(" + value + "," + valueBinding + ")>-1" + (
+        trueValueBinding === 'true'
+          ? (":(" + value + ")")
+          : (":_q(" + value + "," + trueValueBinding + ")")
+      )
+    );
+    addHandler(el, 'change',
+      "var $$a=" + value + "," +
+          '$$el=$event.target,' +
+          "$$c=$$el.checked?(" + trueValueBinding + "):(" + falseValueBinding + ");" +
+      'if(Array.isArray($$a)){' +
+        "var $$v=" + (number ? '_n(' + valueBinding + ')' : valueBinding) + "," +
+            '$$i=_i($$a,$$v);' +
+        "if($$el.checked){$$i<0&&(" + (genAssignmentCode(value, '$$a.concat([$$v])')) + ")}" +
+        "else{$$i>-1&&(" + (genAssignmentCode(value, '$$a.slice(0,$$i).concat($$a.slice($$i+1))')) + ")}" +
+      "}else{" + (genAssignmentCode(value, '$$c')) + "}",
+      null, true
+    );
+  }
+
+  function genRadioModel (
+    el,
+    value,
+    modifiers
+  ) {
+    var number = modifiers && modifiers.number;
+    var valueBinding = getBindingAttr(el, 'value') || 'null';
+    valueBinding = number ? ("_n(" + valueBinding + ")") : valueBinding;
+    addProp(el, 'checked', ("_q(" + value + "," + valueBinding + ")"));
+    addHandler(el, 'change', genAssignmentCode(value, valueBinding), null, true);
+  }
+
+  function genSelect (
+    el,
+    value,
+    modifiers
+  ) {
+    var number = modifiers && modifiers.number;
+    var selectedVal = "Array.prototype.filter" +
+      ".call($event.target.options,function(o){return o.selected})" +
+      ".map(function(o){var val = \"_value\" in o ? o._value : o.value;" +
+      "return " + (number ? '_n(val)' : 'val') + "})";
+
+    var assignment = '$event.target.multiple ? $$selectedVal : $$selectedVal[0]';
+    var code = "var $$selectedVal = " + selectedVal + ";";
+    code = code + " " + (genAssignmentCode(value, assignment));
+    addHandler(el, 'change', code, null, true);
+  }
+
+  function genDefaultModel (
+    el,
+    value,
+    modifiers
+  ) {
+    var type = el.attrsMap.type;
+
+    // warn if v-bind:value conflicts with v-model
+    // except for inputs with v-bind:type
+    {
+      var value$1 = el.attrsMap['v-bind:value'] || el.attrsMap[':value'];
+      var typeBinding = el.attrsMap['v-bind:type'] || el.attrsMap[':type'];
+      if (value$1 && !typeBinding) {
+        var binding = el.attrsMap['v-bind:value'] ? 'v-bind:value' : ':value';
+        warn$1(
+          binding + "=\"" + value$1 + "\" conflicts with v-model on the same element " +
+          'because the latter already expands to a value binding internally',
+          el.rawAttrsMap[binding]
+        );
+      }
+    }
+
+    var ref = modifiers || {};
+    var lazy = ref.lazy;
+    var number = ref.number;
+    var trim = ref.trim;
+    var needCompositionGuard = !lazy && type !== 'range';
+    var event = lazy
+      ? 'change'
+      : type === 'range'
+        ? RANGE_TOKEN
+        : 'input';
+
+    var valueExpression = '$event.target.value';
+    if (trim) {
+      valueExpression = "$event.target.value.trim()";
+    }
+    if (number) {
+      valueExpression = "_n(" + valueExpression + ")";
+    }
+
+    var code = genAssignmentCode(value, valueExpression);
+    if (needCompositionGuard) {
+      code = "if($event.target.composing)return;" + code;
+    }
+
+    addProp(el, 'value', ("(" + value + ")"));
+    addHandler(el, event, code, null, true);
+    if (trim || number) {
+      addHandler(el, 'blur', '$forceUpdate()');
+    }
+  }
+
+  /*  */
+
+  // normalize v-model event tokens that can only be determined at runtime.
+  // it's important to place the event as the first in the array because
+  // the whole point is ensuring the v-model callback gets called before
+  // user-attached handlers.
+  function normalizeEvents (on) {
+    /* istanbul ignore if */
+    if (isDef(on[RANGE_TOKEN])) {
+      // IE input[type=range] only supports `change` event
+      var event = isIE ? 'change' : 'input';
+      on[event] = [].concat(on[RANGE_TOKEN], on[event] || []);
+      delete on[RANGE_TOKEN];
+    }
+    // This was originally intended to fix #4521 but no longer necessary
+    // after 2.5. Keeping it for backwards compat with generated code from < 2.4
+    /* istanbul ignore if */
+    if (isDef(on[CHECKBOX_RADIO_TOKEN])) {
+      on.change = [].concat(on[CHECKBOX_RADIO_TOKEN], on.change || []);
+      delete on[CHECKBOX_RADIO_TOKEN];
+    }
+  }
+
+  var target$1;
+
+  function createOnceHandler$1 (event, handler, capture) {
+    var _target = target$1; // save current target element in closure
+    return function onceHandler () {
+      var res = handler.apply(null, arguments);
+      if (res !== null) {
+        remove$2(event, onceHandler, capture, _target);
+      }
+    }
+  }
+
+  // #9446: Firefox <= 53 (in particular, ESR 52) has incorrect Event.timeStamp
+  // implementation and does not fire microtasks in between event propagation, so
+  // safe to exclude.
+  var useMicrotaskFix = isUsingMicroTask && !(isFF && Number(isFF[1]) <= 53);
+
+  function add$1 (
+    name,
+    handler,
+    capture,
+    passive
+  ) {
+    // async edge case #6566: inner click event triggers patch, event handler
+    // attached to outer element during patch, and triggered again. This
+    // happens because browsers fire microtask ticks between event propagation.
+    // the solution is simple: we save the timestamp when a handler is attached,
+    // and the handler would only fire if the event passed to it was fired
+    // AFTER it was attached.
+    if (useMicrotaskFix) {
+      var attachedTimestamp = currentFlushTimestamp;
+      var original = handler;
+      handler = original._wrapper = function (e) {
+        if (
+          // no bubbling, should always fire.
+          // this is just a safety net in case event.timeStamp is unreliable in
+          // certain weird environments...
+          e.target === e.currentTarget ||
+          // event is fired after handler attachment
+          e.timeStamp >= attachedTimestamp ||
+          // #9462 bail for iOS 9 bug: event.timeStamp is 0 after history.pushState
+          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 (isUndef(props[key])) {
+        elm[key] = '';
+      }
+    }
+    for (key in props) {
+      cur = props[key];
+      // ignore children if the node has textContent or innerHTML,
+      // as these will throw away existing DOM nodes and cause removal errors
+      // on subsequent patches (#3360)
+      if (key === 'textContent' || key === 'innerHTML') {
+        if (vnode.children) { vnode.children.length = 0; }
+        if (cur === oldProps[key]) { continue }
+        // #6601 work around Chrome version <= 55 bug where single textNode
+        // replaced by innerHTML/textContent retains its parentNode property
+        if (elm.childNodes.length === 1) {
+          elm.removeChild(elm.childNodes[0]);
+        }
+      }
+
+      if (key === 'value' && elm.tagName !== 'PROGRESS') {
+        // store value as _value as well since
+        // non-string values will be stringified
+        elm._value = cur;
+        // avoid resetting cursor position when value is the same
+        var strCur = isUndef(cur) ? '' : String(cur);
+        if (shouldUpdateValue(elm, strCur)) {
+          elm.value = strCur;
+        }
+      } else if (key === 'innerHTML' && isSVG(elm.tagName) && isUndef(elm.innerHTML)) {
+        // IE doesn't support innerHTML for SVG elements
+        svgContainer = svgContainer || document.createElement('div');
+        svgContainer.innerHTML = "<svg>" + cur + "</svg>";
+        var svg = svgContainer.firstChild;
+        while (elm.firstChild) {
+          elm.removeChild(elm.firstChild);
+        }
+        while (svg.firstChild) {
+          elm.appendChild(svg.firstChild);
+        }
+      } else if (
+        // skip the update if old and new VDOM state is the same.
+        // `value` is handled separately because the DOM value may be temporarily
+        // out of sync with VDOM state due to focus, composition and modifiers.
+        // This  #4521 by skipping the unnecesarry `checked` update.
+        cur !== oldProps[key]
+      ) {
+        // some property updates can throw
+        // e.g. `value` on <progress> w/ non-finite value
+        try {
+          elm[key] = cur;
+        } catch (e) {}
+      }
+    }
+  }
+
+  // check platforms/web/util/attrs.js acceptValue
+
+
+  function shouldUpdateValue (elm, checkVal) {
+    return (!elm.composing && (
+      elm.tagName === 'OPTION' ||
+      isNotInFocusAndDirty(elm, checkVal) ||
+      isDirtyWithModifiers(elm, checkVal)
+    ))
+  }
+
+  function isNotInFocusAndDirty (elm, checkVal) {
+    // return true when textbox (.number and .trim) loses focus and its value is
+    // not equal to the updated value
+    var notInFocus = true;
+    // #6157
+    // work around IE bug when accessing document.activeElement in an iframe
+    try { notInFocus = document.activeElement !== elm; } catch (e) {}
+    return notInFocus && elm.value !== checkVal
+  }
+
+  function isDirtyWithModifiers (elm, newVal) {
+    var value = elm.value;
+    var modifiers = elm._vModifiers; // injected by v-model runtime
+    if (isDef(modifiers)) {
+      if (modifiers.number) {
+        return toNumber(value) !== toNumber(newVal)
+      }
+      if (modifiers.trim) {
+        return value.trim() !== newVal.trim()
+      }
+    }
+    return value !== newVal
+  }
+
+  var domProps = {
+    create: updateDOMProps,
+    update: updateDOMProps
+  };
+
+  /*  */
+
+  var parseStyleText = cached(function (cssText) {
+    var res = {};
+    var listDelimiter = /;(?![^(]*\))/g;
+    var propertyDelimiter = /:(.+)/;
+    cssText.split(listDelimiter).forEach(function (item) {
+      if (item) {
+        var tmp = item.split(propertyDelimiter);
+        tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim());
+      }
+    });
+    return res
+  });
+
+  // merge static and dynamic style data on the same vnode
+  function normalizeStyleData (data) {
+    var style = normalizeStyleBinding(data.style);
+    // static style is pre-processed into an object during compilation
+    // and is always a fresh object, so it's safe to merge into it
+    return data.staticStyle
+      ? extend(data.staticStyle, style)
+      : style
+  }
+
+  // normalize possible array / string values into Object
+  function normalizeStyleBinding (bindingStyle) {
+    if (Array.isArray(bindingStyle)) {
+      return toObject(bindingStyle)
+    }
+    if (typeof bindingStyle === 'string') {
+      return parseStyleText(bindingStyle)
+    }
+    return bindingStyle
+  }
+
+  /**
+   * parent component style should be after child's
+   * so that parent component's style could override it
+   */
+  function getStyle (vnode, checkChild) {
+    var res = {};
+    var styleData;
+
+    if (checkChild) {
+      var childNode = vnode;
+      while (childNode.componentInstance) {
+        childNode = childNode.componentInstance._vnode;
+        if (
+          childNode && childNode.data &&
+          (styleData = normalizeStyleData(childNode.data))
+        ) {
+          extend(res, styleData);
+        }
+      }
+    }
+
+    if ((styleData = normalizeStyleData(vnode.data))) {
+      extend(res, styleData);
+    }
+
+    var parentNode = vnode;
+    while ((parentNode = parentNode.parent)) {
+      if (parentNode.data && (styleData = normalizeStyleData(parentNode.data))) {
+        extend(res, styleData);
+      }
+    }
+    return res
+  }
+
+  /*  */
+
+  var cssVarRE = /^--/;
+  var importantRE = /\s*!important$/;
+  var setProp = function (el, name, val) {
+    /* istanbul ignore if */
+    if (cssVarRE.test(name)) {
+      el.style.setProperty(name, val);
+    } else if (importantRE.test(val)) {
+      el.style.setProperty(hyphenate(name), val.replace(importantRE, ''), 'important');
+    } else {
+      var normalizedName = normalize(name);
+      if (Array.isArray(val)) {
+        // Support values array created by autoprefixer, e.g.
+        // {display: ["-webkit-box", "-ms-flexbox", "flex"]}
+        // Set them one by one, and the browser will only set those it can recognize
+        for (var i = 0, len = val.length; i < len; i++) {
+          el.style[normalizedName] = val[i];
+        }
+      } else {
+        el.style[normalizedName] = val;
+      }
+    }
+  };
+
+  var vendorNames = ['Webkit', 'Moz', 'ms'];
+
+  var emptyStyle;
+  var normalize = cached(function (prop) {
+    emptyStyle = emptyStyle || document.createElement('div').style;
+    prop = camelize(prop);
+    if (prop !== 'filter' && (prop in emptyStyle)) {
+      return prop
+    }
+    var capName = prop.charAt(0).toUpperCase() + prop.slice(1);
+    for (var i = 0; i < vendorNames.length; i++) {
+      var name = vendorNames[i] + capName;
+      if (name in emptyStyle) {
+        return name
+      }
+    }
+  });
+
+  function updateStyle (oldVnode, vnode) {
+    var data = vnode.data;
+    var oldData = oldVnode.data;
+
+    if (isUndef(data.staticStyle) && isUndef(data.style) &&
+      isUndef(oldData.staticStyle) && isUndef(oldData.style)
+    ) {
+      return
+    }
+
+    var cur, name;
+    var el = vnode.elm;
+    var oldStaticStyle = oldData.staticStyle;
+    var oldStyleBinding = oldData.normalizedStyle || oldData.style || {};
+
+    // if static style exists, stylebinding already merged into it when doing normalizeStyleData
+    var oldStyle = oldStaticStyle || oldStyleBinding;
+
+    var style = normalizeStyleBinding(vnode.data.style) || {};
+
+    // store normalized style under a different key for next diff
+    // make sure to clone it if it's reactive, since the user likely wants
+    // to mutate it.
+    vnode.data.normalizedStyle = isDef(style.__ob__)
+      ? extend({}, style)
+      : style;
+
+    var newStyle = getStyle(vnode, true);
+
+    for (name in oldStyle) {
+      if (isUndef(newStyle[name])) {
+        setProp(el, name, '');
+      }
+    }
+    for (name in newStyle) {
+      cur = newStyle[name];
+      if (cur !== oldStyle[name]) {
+        // ie9 setting to null has no effect, must use empty string
+        setProp(el, name, cur == null ? '' : cur);
+      }
+    }
+  }
+
+  var style = {
+    create: updateStyle,
+    update: updateStyle
+  };
+
+  /*  */
+
+  var whitespaceRE = /\s+/;
+
+  /**
+   * Add class with compatibility for SVG since classList is not supported on
+   * SVG elements in IE
+   */
+  function addClass (el, cls) {
+    /* istanbul ignore if */
+    if (!cls || !(cls = cls.trim())) {
+      return
+    }
+
+    /* istanbul ignore else */
+    if (el.classList) {
+      if (cls.indexOf(' ') > -1) {
+        cls.split(whitespaceRE).forEach(function (c) { return el.classList.add(c); });
+      } else {
+        el.classList.add(cls);
+      }
+    } else {
+      var cur = " " + (el.getAttribute('class') || '') + " ";
+      if (cur.indexOf(' ' + cls + ' ') < 0) {
+        el.setAttribute('class', (cur + cls).trim());
+      }
+    }
+  }
+
+  /**
+   * Remove class with compatibility for SVG since classList is not supported on
+   * SVG elements in IE
+   */
+  function removeClass (el, cls) {
+    /* istanbul ignore if */
+    if (!cls || !(cls = cls.trim())) {
+      return
+    }
+
+    /* istanbul ignore else */
+    if (el.classList) {
+      if (cls.indexOf(' ') > -1) {
+        cls.split(whitespaceRE).forEach(function (c) { return el.classList.remove(c); });
+      } else {
+        el.classList.remove(cls);
+      }
+      if (!el.classList.length) {
+        el.removeAttribute('class');
+      }
+    } else {
+      var cur = " " + (el.getAttribute('class') || '') + " ";
+      var tar = ' ' + cls + ' ';
+      while (cur.indexOf(tar) >= 0) {
+        cur = cur.replace(tar, ' ');
+      }
+      cur = cur.trim();
+      if (cur) {
+        el.setAttribute('class', cur);
+      } else {
+        el.removeAttribute('class');
+      }
+    }
+  }
+
+  /*  */
+
+  function resolveTransition (def$$1) {
+    if (!def$$1) {
+      return
+    }
+    /* istanbul ignore else */
+    if (typeof def$$1 === 'object') {
+      var res = {};
+      if (def$$1.css !== false) {
+        extend(res, autoCssTransition(def$$1.name || 'v'));
+      }
+      extend(res, def$$1);
+      return res
+    } else if (typeof def$$1 === 'string') {
+      return autoCssTransition(def$$1)
+    }
+  }
+
+  var autoCssTransition = cached(function (name) {
+    return {
+      enterClass: (name + "-enter"),
+      enterToClass: (name + "-enter-to"),
+      enterActiveClass: (name + "-enter-active"),
+      leaveClass: (name + "-leave"),
+      leaveToClass: (name + "-leave-to"),
+      leaveActiveClass: (name + "-leave-active")
+    }
+  });
+
+  var hasTransition = inBrowser && !isIE9;
+  var TRANSITION = 'transition';
+  var ANIMATION = 'animation';
+
+  // Transition property/event sniffing
+  var transitionProp = 'transition';
+  var transitionEndEvent = 'transitionend';
+  var animationProp = 'animation';
+  var animationEndEvent = 'animationend';
+  if (hasTransition) {
+    /* istanbul ignore if */
+    if (window.ontransitionend === undefined &&
+      window.onwebkittransitionend !== undefined
+    ) {
+      transitionProp = 'WebkitTransition';
+      transitionEndEvent = 'webkitTransitionEnd';
+    }
+    if (window.onanimationend === undefined &&
+      window.onwebkitanimationend !== undefined
+    ) {
+      animationProp = 'WebkitAnimation';
+      animationEndEvent = 'webkitAnimationEnd';
+    }
+  }
+
+  // binding to window is necessary to make hot reload work in IE in strict mode
+  var raf = inBrowser
+    ? window.requestAnimationFrame
+      ? window.requestAnimationFrame.bind(window)
+      : setTimeout
+    : /* istanbul ignore next */ function (fn) { return fn(); };
+
+  function nextFrame (fn) {
+    raf(function () {
+      raf(fn);
+    });
+  }
+
+  function addTransitionClass (el, cls) {
+    var transitionClasses = el._transitionClasses || (el._transitionClasses = []);
+    if (transitionClasses.indexOf(cls) < 0) {
+      transitionClasses.push(cls);
+      addClass(el, cls);
+    }
+  }
+
+  function removeTransitionClass (el, cls) {
+    if (el._transitionClasses) {
+      remove(el._transitionClasses, cls);
+    }
+    removeClass(el, cls);
+  }
+
+  function whenTransitionEnds (
+    el,
+    expectedType,
+    cb
+  ) {
+    var ref = getTransitionInfo(el, expectedType);
+    var type = ref.type;
+    var timeout = ref.timeout;
+    var propCount = ref.propCount;
+    if (!type) { return cb() }
+    var event = type === TRANSITION ? transitionEndEvent : animationEndEvent;
+    var ended = 0;
+    var end = function () {
+      el.removeEventListener(event, onEnd);
+      cb();
+    };
+    var onEnd = function (e) {
+      if (e.target === el) {
+        if (++ended >= propCount) {
+          end();
+        }
+      }
+    };
+    setTimeout(function () {
+      if (ended < propCount) {
+        end();
+      }
+    }, timeout + 1);
+    el.addEventListener(event, onEnd);
+  }
+
+  var transformRE = /\b(transform|all)(,|$)/;
+
+  function getTransitionInfo (el, expectedType) {
+    var styles = window.getComputedStyle(el);
+    // JSDOM may return undefined for transition properties
+    var transitionDelays = (styles[transitionProp + 'Delay'] || '').split(', ');
+    var transitionDurations = (styles[transitionProp + 'Duration'] || '').split(', ');
+    var transitionTimeout = getTimeout(transitionDelays, transitionDurations);
+    var animationDelays = (styles[animationProp + 'Delay'] || '').split(', ');
+    var animationDurations = (styles[animationProp + 'Duration'] || '').split(', ');
+    var animationTimeout = getTimeout(animationDelays, animationDurations);
+
+    var type;
+    var timeout = 0;
+    var propCount = 0;
+    /* istanbul ignore if */
+    if (expectedType === TRANSITION) {
+      if (transitionTimeout > 0) {
+        type = TRANSITION;
+        timeout = transitionTimeout;
+        propCount = transitionDurations.length;
+      }
+    } else if (expectedType === ANIMATION) {
+      if (animationTimeout > 0) {
+        type = ANIMATION;
+        timeout = animationTimeout;
+        propCount = animationDurations.length;
+      }
+    } else {
+      timeout = Math.max(transitionTimeout, animationTimeout);
+      type = timeout > 0
+        ? transitionTimeout > animationTimeout
+          ? TRANSITION
+          : ANIMATION
+        : null;
+      propCount = type
+        ? type === TRANSITION
+          ? transitionDurations.length
+          : animationDurations.length
+        : 0;
+    }
+    var hasTransform =
+      type === TRANSITION &&
+      transformRE.test(styles[transitionProp + 'Property']);
+    return {
+      type: type,
+      timeout: timeout,
+      propCount: propCount,
+      hasTransform: hasTransform
+    }
+  }
+
+  function getTimeout (delays, durations) {
+    /* istanbul ignore next */
+    while (delays.length < durations.length) {
+      delays = delays.concat(delays);
+    }
+
+    return Math.max.apply(null, durations.map(function (d, i) {
+      return toMs(d) + toMs(delays[i])
+    }))
+  }
+
+  // Old versions of Chromium (below 61.0.3163.100) formats floating pointer numbers
+  // in a locale-dependent way, using a comma instead of a dot.
+  // If comma is not replaced with a dot, the input will be rounded down (i.e. acting
+  // as a floor function) causing unexpected behaviors
+  function toMs (s) {
+    return Number(s.slice(0, -1).replace(',', '.')) * 1000
+  }
+
+  /*  */
+
+  function enter (vnode, toggleDisplay) {
+    var el = vnode.elm;
+
+    // call leave callback now
+    if (isDef(el._leaveCb)) {
+      el._leaveCb.cancelled = true;
+      el._leaveCb();
+    }
+
+    var data = resolveTransition(vnode.data.transition);
+    if (isUndef(data)) {
+      return
+    }
+
+    /* istanbul ignore if */
+    if (isDef(el._enterCb) || el.nodeType !== 1) {
+      return
+    }
+
+    var css = data.css;
+    var type = data.type;
+    var enterClass = data.enterClass;
+    var enterToClass = data.enterToClass;
+    var enterActiveClass = data.enterActiveClass;
+    var appearClass = data.appearClass;
+    var appearToClass = data.appearToClass;
+    var appearActiveClass = data.appearActiveClass;
+    var beforeEnter = data.beforeEnter;
+    var enter = data.enter;
+    var afterEnter = data.afterEnter;
+    var enterCancelled = data.enterCancelled;
+    var beforeAppear = data.beforeAppear;
+    var appear = data.appear;
+    var afterAppear = data.afterAppear;
+    var appearCancelled = data.appearCancelled;
+    var duration = data.duration;
+
+    // activeInstance will always be the <transition> component managing this
+    // transition. One edge case to check is when the <transition> is placed
+    // as the root node of a child component. In that case we need to check
+    // <transition>'s parent for appear check.
+    var context = activeInstance;
+    var transitionNode = activeInstance.$vnode;
+    while (transitionNode && transitionNode.parent) {
+      transitionNode = transitionNode.parent;
+      context = transitionNode.context;
+    }
+
+    var isAppear = !context._isMounted || !vnode.isRootInsert;
+
+    if (isAppear && !appear && appear !== '') {
+      return
+    }
+
+    var startClass = isAppear && appearClass
+      ? appearClass
+      : enterClass;
+    var activeClass = isAppear && appearActiveClass
+      ? appearActiveClass
+      : enterActiveClass;
+    var toClass = isAppear && appearToClass
+      ? appearToClass
+      : enterToClass;
+
+    var beforeEnterHook = isAppear
+      ? (beforeAppear || beforeEnter)
+      : beforeEnter;
+    var enterHook = isAppear
+      ? (typeof appear === 'function' ? appear : enter)
+      : enter;
+    var afterEnterHook = isAppear
+      ? (afterAppear || afterEnter)
+      : afterEnter;
+    var enterCancelledHook = isAppear
+      ? (appearCancelled || enterCancelled)
+      : enterCancelled;
+
+    var explicitEnterDuration = toNumber(
+      isObject(duration)
+        ? duration.enter
+        : duration
+    );
+
+    if (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" + unicodeLetters + "]*";
+  var qnameCapture = "((?:" + ncname + "\\:)?" + ncname + ")";
+  var startTagOpen = new RegExp(("^<" + qnameCapture));
+  var startTagClose = /^\s*(\/?)>/;
+  var endTag = new RegExp(("^<\\/" + qnameCapture + "[^>]*>"));
+  var doctype = /^<!DOCTYPE [^>]+>/i;
+  // #7298: escape - to avoid being pased as HTML comment when inlined in page
+  var comment = /^<!\--/;
+  var conditionalComment = /^<!\[/;
+
+  // Special Elements (can contain anything)
+  var isPlainTextElement = makeMap('script,style,textarea', true);
+  var reCache = {};
+
+  var decodingMap = {
+    '&lt;': '<',
+    '&gt;': '>',
+    '&quot;': '"',
+    '&amp;': '&',
+    '&#10;': '\n',
+    '&#9;': '\t',
+    '&#39;': "'"
+  };
+  var encodedAttr = /&(?:lt|gt|quot|amp|#39);/g;
+  var encodedAttrWithNewLines = /&(?:lt|gt|quot|amp|#39|#10|#9);/g;
+
+  // #5992
+  var isIgnoreNewlineTag = makeMap('pre,textarea', true);
+  var shouldIgnoreFirstNewline = function (tag, html) { return tag && isIgnoreNewlineTag(tag) && html[0] === '\n'; };
+
+  function decodeAttr (value, shouldDecodeNewlines) {
+    var re = shouldDecodeNewlines ? encodedAttrWithNewLines : encodedAttr;
+    return value.replace(re, function (match) { return decodingMap[match]; })
+  }
+
+  function parseHTML (html, options) {
+    var stack = [];
+    var expectHTML = options.expectHTML;
+    var isUnaryTag$$1 = options.isUnaryTag || no;
+    var canBeLeftOpenTag$$1 = options.canBeLeftOpenTag || no;
+    var index = 0;
+    var last, lastTag;
+    while (html) {
+      last = html;
+      // Make sure we're not in a plaintext content element like script/style
+      if (!lastTag || !isPlainTextElement(lastTag)) {
+        var textEnd = html.indexOf('<');
+        if (textEnd === 0) {
+          // Comment:
+          if (comment.test(html)) {
+            var commentEnd = html.indexOf('-->');
+
+            if (commentEnd >= 0) {
+              if (options.shouldKeepComment) {
+                options.comment(html.substring(4, commentEnd), index, index + commentEnd + 3);
+              }
+              advance(commentEnd + 3);
+              continue
+            }
+          }
+
+          // http://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment
+          if (conditionalComment.test(html)) {
+            var conditionalEnd = html.indexOf(']>');
+
+            if (conditionalEnd >= 0) {
+              advance(conditionalEnd + 2);
+              continue
+            }
+          }
+
+          // Doctype:
+          var doctypeMatch = html.match(doctype);
+          if (doctypeMatch) {
+            advance(doctypeMatch[0].length);
+            continue
+          }
+
+          // End tag:
+          var endTagMatch = html.match(endTag);
+          if (endTagMatch) {
+            var curIndex = index;
+            advance(endTagMatch[0].length);
+            parseEndTag(endTagMatch[1], curIndex, index);
+            continue
+          }
+
+          // Start tag:
+          var startTagMatch = parseStartTag();
+          if (startTagMatch) {
+            handleStartTag(startTagMatch);
+            if (shouldIgnoreFirstNewline(startTagMatch.tagName, html)) {
+              advance(1);
+            }
+            continue
+          }
+        }
+
+        var text = (void 0), rest = (void 0), next = (void 0);
+        if (textEnd >= 0) {
+          rest = html.slice(textEnd);
+          while (
+            !endTag.test(rest) &&
+            !startTagOpen.test(rest) &&
+            !comment.test(rest) &&
+            !conditionalComment.test(rest)
+          ) {
+            // < in plain text, be forgiving and treat it as text
+            next = rest.indexOf('<', 1);
+            if (next < 0) { break }
+            textEnd += next;
+            rest = html.slice(textEnd);
+          }
+          text = html.substring(0, textEnd);
+        }
+
+        if (textEnd < 0) {
+          text = html;
+        }
+
+        if (text) {
+          advance(text.length);
+        }
+
+        if (options.chars && text) {
+          options.chars(text, index - text.length, index);
+        }
+      } else {
+        var endTagLength = 0;
+        var stackedTag = lastTag.toLowerCase();
+        var reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)(</' + stackedTag + '[^>]*>)', 'i'));
+        var rest$1 = html.replace(reStackedTag, function (all, text, endTag) {
+          endTagLength = endTag.length;
+          if (!isPlainTextElement(stackedTag) && stackedTag !== 'noscript') {
+            text = text
+              .replace(/<!\--([\s\S]*?)-->/g, '$1') // #7298
+              .replace(/<!\[CDATA\[([\s\S]*?)]]>/g, '$1');
+          }
+          if (shouldIgnoreFirstNewline(stackedTag, text)) {
+            text = text.slice(1);
+          }
+          if (options.chars) {
+            options.chars(text);
+          }
+          return ''
+        });
+        index += html.length - rest$1.length;
+        html = rest$1;
+        parseEndTag(stackedTag, index - endTagLength, index);
+      }
+
+      if (html === last) {
+        options.chars && options.chars(html);
+        if (!stack.length && options.warn) {
+          options.warn(("Mal-formatted tag at end of template: \"" + html + "\""), { start: index + html.length });
+        }
+        break
+      }
+    }
+
+    // Clean up any remaining tags
+    parseEndTag();
+
+    function advance (n) {
+      index += n;
+      html = html.substring(n);
+    }
+
+    function parseStartTag () {
+      var start = html.match(startTagOpen);
+      if (start) {
+        var match = {
+          tagName: start[1],
+          attrs: [],
+          start: index
+        };
+        advance(start[0].length);
+        var end, attr;
+        while (!(end = html.match(startTagClose)) && (attr = html.match(dynamicArgAttribute) || html.match(attribute))) {
+          attr.start = index;
+          advance(attr[0].length);
+          attr.end = index;
+          match.attrs.push(attr);
+        }
+        if (end) {
+          match.unarySlash = end[1];
+          advance(end[0].length);
+          match.end = index;
+          return match
+        }
+      }
+    }
+
+    function handleStartTag (match) {
+      var tagName = match.tagName;
+      var unarySlash = match.unarySlash;
+
+      if (expectHTML) {
+        if (lastTag === 'p' && isNonPhrasingTag(tagName)) {
+          parseEndTag(lastTag);
+        }
+        if (canBeLeftOpenTag$$1(tagName) && lastTag === tagName) {
+          parseEndTag(tagName);
+        }
+      }
+
+      var unary = isUnaryTag$$1(tagName) || !!unarySlash;
+
+      var l = match.attrs.length;
+      var attrs = new Array(l);
+      for (var i = 0; i < l; i++) {
+        var args = match.attrs[i];
+        var value = args[3] || args[4] || args[5] || '';
+        var shouldDecodeNewlines = tagName === 'a' && args[1] === 'href'
+          ? options.shouldDecodeNewlinesForHref
+          : options.shouldDecodeNewlines;
+        attrs[i] = {
+          name: args[1],
+          value: decodeAttr(value, shouldDecodeNewlines)
+        };
+        if (options.outputSourceRange) {
+          attrs[i].start = args.start + args[0].match(/^\s*/).length;
+          attrs[i].end = args.end;
+        }
+      }
+
+      if (!unary) {
+        stack.push({ tag: tagName, lowerCasedTag: tagName.toLowerCase(), attrs: attrs, start: match.start, end: match.end });
+        lastTag = tagName;
+      }
+
+      if (options.start) {
+        options.start(tagName, attrs, unary, match.start, match.end);
+      }
+    }
+
+    function parseEndTag (tagName, start, end) {
+      var pos, lowerCasedTagName;
+      if (start == null) { start = index; }
+      if (end == null) { end = index; }
+
+      // Find the closest opened tag of the same type
+      if (tagName) {
+        lowerCasedTagName = tagName.toLowerCase();
+        for (pos = stack.length - 1; pos >= 0; pos--) {
+          if (stack[pos].lowerCasedTag === lowerCasedTagName) {
+            break
+          }
+        }
+      } else {
+        // If no tag name is provided, clean shop
+        pos = 0;
+      }
+
+      if (pos >= 0) {
+        // Close all the open elements, up the stack
+        for (var i = stack.length - 1; i >= pos; i--) {
+          if (i > pos || !tagName &&
+            options.warn
+          ) {
+            options.warn(
+              ("tag <" + (stack[i].tag) + "> has no matching end tag."),
+              { start: stack[i].start }
+            );
+          }
+          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) {
+        // 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.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 (whitespaceOption === 'condense') {
+            // condense consecutive whitespaces into single space
+            text = text.replace(whitespaceRE$1, ' ');
+          }
+          var res;
+          var child;
+          if (!inVPre && text !== ' ' && (res = parseText(text, delimiters))) {
+            child = {
+              type: 2,
+              expression: res.expression,
+              tokens: res.tokens,
+              text: text
+            };
+          } else if (text !== ' ' || !children.length || children[children.length - 1].text !== ' ') {
+            child = {
+              type: 3,
+              text: text
+            };
+          }
+          if (child) {
+            if (options.outputSourceRange) {
+              child.start = start;
+              child.end = end;
+            }
+            children.push(child);
+          }
+        }
+      },
+      comment: function comment (text, start, end) {
+        // adding anyting as a sibling to the root node is forbidden
+        // comments should still be allowed, but ignored
+        if (currentParent) {
+          var child = {
+            type: 3,
+            text: text,
+            isComment: true
+          };
+          if (options.outputSourceRange) {
+            child.start = start;
+            child.end = end;
+          }
+          currentParent.children.push(child);
+        }
+      }
+    });
+    return root
+  }
+
+  function processPre (el) {
+    if (getAndRemoveAttr(el, 'v-pre') != null) {
+      el.pre = true;
+    }
+  }
+
+  function processRawAttrs (el) {
+    var list = el.attrsList;
+    var len = list.length;
+    if (len) {
+      var attrs = el.attrs = new Array(len);
+      for (var i = 0; i < len; i++) {
+        attrs[i] = {
+          name: list[i].name,
+          value: JSON.stringify(list[i].value)
+        };
+        if (list[i].start != null) {
+          attrs[i].start = list[i].start;
+          attrs[i].end = list[i].end;
+        }
+      }
+    } else if (!el.pre) {
+      // non root node in pre blocks with no attributes
+      el.plain = true;
+    }
+  }
+
+  function processElement (
+    element,
+    options
+  ) {
+    processKey(element);
+
+    // determine whether this is a plain element after
+    // removing structural attributes
+    element.plain = (
+      !element.key &&
+      !element.scopedSlots &&
+      !element.attrsList.length
+    );
+
+    processRef(element);
+    processSlotContent(element);
+    processSlotOutlet(element);
+    processComponent(element);
+    for (var i = 0; i < transforms.length; i++) {
+      element = transforms[i](element, options) || element;
+    }
+    processAttrs(element);
+    return element
+  }
+
+  function processKey (el) {
+    var exp = getBindingAttr(el, 'key');
+    if (exp) {
+      {
+        if (el.tag === 'template') {
+          warn$2(
+            "<template> cannot be keyed. Place the key on real elements instead.",
+            getRawBindingAttr(el, 'key')
+          );
+        }
+        if (el.for) {
+          var iterator = el.iterator2 || el.iterator1;
+          var parent = el.parent;
+          if (iterator && iterator === exp && parent && parent.tag === 'transition-group') {
+            warn$2(
+              "Do not use v-for index as key on <transition-group> children, " +
+              "this is the same as not using keys.",
+              getRawBindingAttr(el, 'key'),
+              true /* tip */
+            );
+          }
+        }
+      }
+      el.key = exp;
+    }
+  }
+
+  function processRef (el) {
+    var ref = getBindingAttr(el, 'ref');
+    if (ref) {
+      el.ref = ref;
+      el.refInFor = checkInFor(el);
+    }
+  }
+
+  function processFor (el) {
+    var exp;
+    if ((exp = getAndRemoveAttr(el, 'v-for'))) {
+      var res = parseFor(exp);
+      if (res) {
+        extend(el, res);
+      } else {
+        warn$2(
+          ("Invalid v-for expression: " + exp),
+          el.rawAttrsMap['v-for']
+        );
+      }
+    }
+  }
+
+
+
+  function parseFor (exp) {
+    var inMatch = exp.match(forAliasRE);
+    if (!inMatch) { return }
+    var res = {};
+    res.for = inMatch[2].trim();
+    var alias = inMatch[1].trim().replace(stripParensRE, '');
+    var iteratorMatch = alias.match(forIteratorRE);
+    if (iteratorMatch) {
+      res.alias = alias.replace(forIteratorRE, '').trim();
+      res.iterator1 = iteratorMatch[1].trim();
+      if (iteratorMatch[2]) {
+        res.iterator2 = iteratorMatch[2].trim();
+      }
+    } else {
+      res.alias = alias;
+    }
+    return res
+  }
+
+  function processIf (el) {
+    var exp = getAndRemoveAttr(el, 'v-if');
+    if (exp) {
+      el.if = exp;
+      addIfCondition(el, {
+        exp: exp,
+        block: el
+      });
+    } else {
+      if (getAndRemoveAttr(el, 'v-else') != null) {
+        el.else = true;
+      }
+      var elseif = getAndRemoveAttr(el, 'v-else-if');
+      if (elseif) {
+        el.elseif = elseif;
+      }
+    }
+  }
+
+  function processIfConditions (el, parent) {
+    var prev = findPrevElement(parent.children);
+    if (prev && prev.if) {
+      addIfCondition(prev, {
+        exp: el.elseif,
+        block: el
+      });
+    } else {
+      warn$2(
+        "v-" + (el.elseif ? ('else-if="' + el.elseif + '"') : 'else') + " " +
+        "used on element <" + (el.tag) + "> without corresponding v-if.",
+        el.rawAttrsMap[el.elseif ? 'v-else-if' : 'v-else']
+      );
+    }
+  }
+
+  function findPrevElement (children) {
+    var i = children.length;
+    while (i--) {
+      if (children[i].type === 1) {
+        return children[i]
+      } else {
+        if (children[i].text !== ' ') {
+          warn$2(
+            "text \"" + (children[i].text.trim()) + "\" between v-if and v-else(-if) " +
+            "will be ignored.",
+            children[i]
+          );
+        }
+        children.pop();
+      }
+    }
+  }
+
+  function addIfCondition (el, condition) {
+    if (!el.ifConditions) {
+      el.ifConditions = [];
+    }
+    el.ifConditions.push(condition);
+  }
+
+  function processOnce (el) {
+    var once$$1 = getAndRemoveAttr(el, 'v-once');
+    if (once$$1 != null) {
+      el.once = true;
+    }
+  }
+
+  // handle content being passed to a component as slot,
+  // e.g. <template slot="xxx">, <div slot-scope="xxx">
+  function processSlotContent (el) {
+    var slotScope;
+    if (el.tag === 'template') {
+      slotScope = getAndRemoveAttr(el, 'scope');
+      /* istanbul ignore if */
+      if (slotScope) {
+        warn$2(
+          "the \"scope\" attribute for scoped slots have been deprecated and " +
+          "replaced by \"slot-scope\" since 2.5. The new \"slot-scope\" attribute " +
+          "can also be used on plain elements in addition to <template> to " +
+          "denote scoped slots.",
+          el.rawAttrsMap['scope'],
+          true
+        );
+      }
+      el.slotScope = slotScope || getAndRemoveAttr(el, 'slot-scope');
+    } else if ((slotScope = getAndRemoveAttr(el, 'slot-scope'))) {
+      /* istanbul ignore if */
+      if (el.attrsMap['v-for']) {
+        warn$2(
+          "Ambiguous combined usage of slot-scope and v-for on <" + (el.tag) + "> " +
+          "(v-for takes higher priority). Use a wrapper <template> for the " +
+          "scoped slot to make it clearer.",
+          el.rawAttrsMap['slot-scope'],
+          true
+        );
+      }
+      el.slotScope = slotScope;
+    }
+
+    // slot="xxx"
+    var slotTarget = getBindingAttr(el, 'slot');
+    if (slotTarget) {
+      el.slotTarget = slotTarget === '""' ? '"default"' : slotTarget;
+      el.slotTargetDynamic = !!(el.attrsMap[':slot'] || el.attrsMap['v-bind:slot']);
+      // preserve slot as an attribute for native shadow DOM compat
+      // only for non-scoped slots.
+      if (el.tag !== 'template' && !el.slotScope) {
+        addAttr(el, 'slot', slotTarget, getRawBindingAttr(el, 'slot'));
+      }
+    }
+
+    // 2.6 v-slot syntax
+    {
+      if (el.tag === 'template') {
+        // v-slot on <template>
+        var slotBinding = getAndRemoveAttrByRegex(el, slotRE);
+        if (slotBinding) {
+          {
+            if (el.slotTarget || el.slotScope) {
+              warn$2(
+                "Unexpected mixed usage of different slot syntaxes.",
+                el
+              );
+            }
+            if (el.parent && !maybeComponent(el.parent)) {
+              warn$2(
+                "<template v-slot> can only appear at the root level inside " +
+                "the receiving the component",
+                el
+              );
+            }
+          }
+          var ref = getSlotName(slotBinding);
+          var name = ref.name;
+          var dynamic = ref.dynamic;
+          el.slotTarget = name;
+          el.slotTargetDynamic = dynamic;
+          el.slotScope = slotBinding.value || emptySlotScopeToken; // force it into a scoped slot for perf
+        }
+      } else {
+        // v-slot on component, denotes default slot
+        var slotBinding$1 = getAndRemoveAttrByRegex(el, slotRE);
+        if (slotBinding$1) {
+          {
+            if (!maybeComponent(el)) {
+              warn$2(
+                "v-slot can only be used on components or <template>.",
+                slotBinding$1
+              );
+            }
+            if (el.slotScope || el.slotTarget) {
+              warn$2(
+                "Unexpected mixed usage of different slot syntaxes.",
+                el
+              );
+            }
+            if (el.scopedSlots) {
+              warn$2(
+                "To avoid scope ambiguity, the default slot should also use " +
+                "<template> syntax when there are other named slots.",
+                slotBinding$1
+              );
+            }
+          }
+          // add the component's children to its default slot
+          var slots = el.scopedSlots || (el.scopedSlots = {});
+          var ref$1 = getSlotName(slotBinding$1);
+          var name$1 = ref$1.name;
+          var dynamic$1 = ref$1.dynamic;
+          var slotContainer = slots[name$1] = createASTElement('template', [], el);
+          slotContainer.slotTarget = name$1;
+          slotContainer.slotTargetDynamic = dynamic$1;
+          slotContainer.children = el.children.filter(function (c) {
+            if (!c.slotScope) {
+              c.parent = slotContainer;
+              return true
+            }
+          });
+          slotContainer.slotScope = slotBinding$1.value || emptySlotScopeToken;
+          // remove children as they are returned from scopedSlots now
+          el.children = [];
+          // mark el non-plain so data gets generated
+          el.plain = false;
+        }
+      }
+    }
+  }
+
+  function getSlotName (binding) {
+    var name = binding.name.replace(slotRE, '');
+    if (!name) {
+      if (binding.name[0] !== '#') {
+        name = 'default';
+      } else {
+        warn$2(
+          "v-slot shorthand syntax requires a slot name.",
+          binding
+        );
+      }
+    }
+    return dynamicArgRE.test(name)
+      // dynamic [name]
+      ? { name: name.slice(1, -1), dynamic: true }
+      // static name
+      : { name: ("\"" + name + "\""), dynamic: false }
+  }
+
+  // handle <slot/> outlets
+  function processSlotOutlet (el) {
+    if (el.tag === 'slot') {
+      el.slotName = getBindingAttr(el, 'name');
+      if (el.key) {
+        warn$2(
+          "`key` does not work on <slot> because slots are abstract outlets " +
+          "and can possibly expand into multiple elements. " +
+          "Use the key on a wrapping element instead.",
+          getRawBindingAttr(el, 'key')
+        );
+      }
+    }
+  }
+
+  function processComponent (el) {
+    var binding;
+    if ((binding = getBindingAttr(el, 'is'))) {
+      el.component = binding;
+    }
+    if (getAndRemoveAttr(el, 'inline-template') != null) {
+      el.inlineTemplate = true;
+    }
+  }
+
+  function processAttrs (el) {
+    var list = el.attrsList;
+    var i, l, name, rawName, value, modifiers, syncGen, isDynamic;
+    for (i = 0, l = list.length; i < l; i++) {
+      name = rawName = list[i].name;
+      value = list[i].value;
+      if (dirRE.test(name)) {
+        // mark element as dynamic
+        el.hasBindings = true;
+        // modifiers
+        modifiers = parseModifiers(name.replace(dirRE, ''));
+        // support .foo shorthand syntax for the .prop modifier
+        if (modifiers) {
+          name = name.replace(modifierRE, '');
+        }
+        if (bindRE.test(name)) { // v-bind
+          name = name.replace(bindRE, '');
+          value = parseFilters(value);
+          isDynamic = dynamicArgRE.test(name);
+          if (isDynamic) {
+            name = name.slice(1, -1);
+          }
+          if (
+            value.trim().length === 0
+          ) {
+            warn$2(
+              ("The value for a v-bind expression cannot be empty. Found in \"v-bind:" + name + "\"")
+            );
+          }
+          if (modifiers) {
+            if (modifiers.prop && !isDynamic) {
+              name = camelize(name);
+              if (name === 'innerHtml') { name = 'innerHTML'; }
+            }
+            if (modifiers.camel && !isDynamic) {
+              name = camelize(name);
+            }
+            if (modifiers.sync) {
+              syncGen = genAssignmentCode(value, "$event");
+              if (!isDynamic) {
+                addHandler(
+                  el,
+                  ("update:" + (camelize(name))),
+                  syncGen,
+                  null,
+                  false,
+                  warn$2,
+                  list[i]
+                );
+                if (hyphenate(name) !== camelize(name)) {
+                  addHandler(
+                    el,
+                    ("update:" + (hyphenate(name))),
+                    syncGen,
+                    null,
+                    false,
+                    warn$2,
+                    list[i]
+                  );
+                }
+              } else {
+                // handler w/ dynamic event name
+                addHandler(
+                  el,
+                  ("\"update:\"+(" + name + ")"),
+                  syncGen,
+                  null,
+                  false,
+                  warn$2,
+                  list[i],
+                  true // dynamic
+                );
+              }
+            }
+          }
+          if ((modifiers && modifiers.prop) || (
+            !el.component && platformMustUseProp(el.tag, el.attrsMap.type, name)
+          )) {
+            addProp(el, name, value, list[i], isDynamic);
+          } else {
+            addAttr(el, name, value, list[i], isDynamic);
+          }
+        } else if (onRE.test(name)) { // v-on
+          name = name.replace(onRE, '');
+          isDynamic = dynamicArgRE.test(name);
+          if (isDynamic) {
+            name = name.slice(1, -1);
+          }
+          addHandler(el, name, value, modifiers, false, warn$2, list[i], isDynamic);
+        } else { // normal directives
+          name = name.replace(dirRE, '');
+          // parse arg
+          var argMatch = name.match(argRE);
+          var arg = argMatch && argMatch[1];
+          isDynamic = false;
+          if (arg) {
+            name = name.slice(0, -(arg.length + 1));
+            if (dynamicArgRE.test(arg)) {
+              arg = arg.slice(1, -1);
+              isDynamic = true;
+            }
+          }
+          addDirective(el, name, rawName, value, arg, isDynamic, modifiers, list[i]);
+          if (name === 'model') {
+            checkForAliasModel(el, value);
+          }
+        }
+      } else {
+        // literal attribute
+        {
+          var res = parseText(value, delimiters);
+          if (res) {
+            warn$2(
+              name + "=\"" + value + "\": " +
+              'Interpolation inside attributes has been removed. ' +
+              'Use v-bind or the colon shorthand instead. For example, ' +
+              'instead of <div id="{{ val }}">, use <div :id="val">.',
+              list[i]
+            );
+          }
+        }
+        addAttr(el, name, JSON.stringify(value), list[i]);
+        // #6887 firefox doesn't update muted state if set via attribute
+        // even immediately after element creation
+        if (!el.component &&
+            name === 'muted' &&
+            platformMustUseProp(el.tag, el.attrsMap.type, name)) {
+          addProp(el, name, 'true', list[i]);
+        }
+      }
+    }
+  }
+
+  function checkInFor (el) {
+    var parent = el;
+    while (parent) {
+      if (parent.for !== undefined) {
+        return true
+      }
+      parent = parent.parent;
+    }
+    return false
+  }
+
+  function parseModifiers (name) {
+    var match = name.match(modifierRE);
+    if (match) {
+      var ret = {};
+      match.forEach(function (m) { ret[m.slice(1)] = true; });
+      return ret
+    }
+  }
+
+  function makeAttrsMap (attrs) {
+    var map = {};
+    for (var i = 0, l = attrs.length; i < l; i++) {
+      if (
+        map[attrs[i].name] && !isIE && !isEdge
+      ) {
+        warn$2('duplicate attribute: ' + attrs[i].name, attrs[i]);
+      }
+      map[attrs[i].name] = attrs[i].value;
+    }
+    return map
+  }
+
+  // for script (e.g. type="x/template") or style, do not decode content
+  function isTextTag (el) {
+    return el.tag === 'script' || el.tag === 'style'
+  }
+
+  function isForbiddenTag (el) {
+    return (
+      el.tag === 'style' ||
+      (el.tag === 'script' && (
+        !el.attrsMap.type ||
+        el.attrsMap.type === 'text/javascript'
+      ))
+    )
+  }
+
+  var ieNSBug = /^xmlns:NS\d+/;
+  var ieNSPrefix = /^NS\d+:/;
+
+  /* istanbul ignore next */
+  function guardIESVGBug (attrs) {
+    var res = [];
+    for (var i = 0; i < attrs.length; i++) {
+      var attr = attrs[i];
+      if (!ieNSBug.test(attr.name)) {
+        attr.name = attr.name.replace(ieNSPrefix, '');
+        res.push(attr);
+      }
+    }
+    return res
+  }
+
+  function checkForAliasModel (el, value) {
+    var _el = el;
+    while (_el) {
+      if (_el.for && _el.alias === value) {
+        warn$2(
+          "<" + (el.tag) + " v-model=\"" + value + "\">: " +
+          "You are binding v-model directly to a v-for iteration alias. " +
+          "This will not be able to modify the v-for source array because " +
+          "writing to the alias is like modifying a function local variable. " +
+          "Consider using an array of objects and use v-model on an object property instead.",
+          el.rawAttrsMap['v-model']
+        );
+      }
+      _el = _el.parent;
+    }
+  }
+
+  /*  */
+
+  function preTransformNode (el, options) {
+    if (el.tag === 'input') {
+      var map = el.attrsMap;
+      if (!map['v-model']) {
+        return
+      }
+
+      var typeBinding;
+      if (map[':type'] || map['v-bind:type']) {
+        typeBinding = getBindingAttr(el, 'type');
+      }
+      if (!map.type && !typeBinding && map['v-bind']) {
+        typeBinding = "(" + (map['v-bind']) + ").type";
+      }
+
+      if (typeBinding) {
+        var ifCondition = getAndRemoveAttr(el, 'v-if', true);
+        var ifConditionExtra = ifCondition ? ("&&(" + ifCondition + ")") : "";
+        var hasElse = getAndRemoveAttr(el, 'v-else', true) != null;
+        var elseIfCondition = getAndRemoveAttr(el, 'v-else-if', true);
+        // 1. checkbox
+        var branch0 = cloneASTElement(el);
+        // process for on the main node
+        processFor(branch0);
+        addRawAttr(branch0, 'type', 'checkbox');
+        processElement(branch0, options);
+        branch0.processed = true; // prevent it from double-processed
+        branch0.if = "(" + typeBinding + ")==='checkbox'" + ifConditionExtra;
+        addIfCondition(branch0, {
+          exp: branch0.if,
+          block: branch0
+        });
+        // 2. add radio else-if condition
+        var branch1 = cloneASTElement(el);
+        getAndRemoveAttr(branch1, 'v-for', true);
+        addRawAttr(branch1, 'type', 'radio');
+        processElement(branch1, options);
+        addIfCondition(branch0, {
+          exp: "(" + typeBinding + ")==='radio'" + ifConditionExtra,
+          block: branch1
+        });
+        // 3. other
+        var branch2 = cloneASTElement(el);
+        getAndRemoveAttr(branch2, 'v-for', true);
+        addRawAttr(branch2, ':type', typeBinding);
+        processElement(branch2, options);
+        addIfCondition(branch0, {
+          exp: ifCondition,
+          block: branch2
+        });
+
+        if (hasElse) {
+          branch0.else = true;
+        } else if (elseIfCondition) {
+          branch0.elseif = elseIfCondition;
+        }
+
+        return branch0
+      }
+    }
+  }
+
+  function cloneASTElement (el) {
+    return createASTElement(el.tag, el.attrsList.slice(), el.parent)
+  }
+
+  var model$1 = {
+    preTransformNode: preTransformNode
+  };
+
+  var modules$1 = [
+    klass$1,
+    style$1,
+    model$1
+  ];
+
+  /*  */
+
+  function text (el, dir) {
+    if (dir.value) {
+      addProp(el, 'textContent', ("_s(" + (dir.value) + ")"), dir);
+    }
+  }
+
+  /*  */
+
+  function html (el, dir) {
+    if (dir.value) {
+      addProp(el, 'innerHTML', ("_s(" + (dir.value) + ")"), dir);
+    }
+  }
+
+  var directives$1 = {
+    model: model,
+    text: text,
+    html: html
+  };
+
+  /*  */
+
+  var baseOptions = {
+    expectHTML: true,
+    modules: modules$1,
+    directives: directives$1,
+    isPreTag: isPreTag,
+    isUnaryTag: isUnaryTag,
+    mustUseProp: mustUseProp,
+    canBeLeftOpenTag: canBeLeftOpenTag,
+    isReservedTag: isReservedTag,
+    getTagNamespace: getTagNamespace,
+    staticKeys: genStaticKeys(modules$1)
+  };
+
+  /*  */
+
+  var isStaticKey;
+  var isPlatformReservedTag;
+
+  var genStaticKeysCached = cached(genStaticKeys$1);
+
+  /**
+   * Goal of the optimizer: walk the generated template AST tree
+   * and detect sub-trees that are purely static, i.e. parts of
+   * the DOM that never needs to change.
+   *
+   * Once we detect these sub-trees, we can:
+   *
+   * 1. Hoist them into constants, so that we no longer need to
+   *    create fresh nodes for them on each re-render;
+   * 2. Completely skip them in the patching process.
+   */
+  function optimize (root, options) {
+    if (!root) { return }
+    isStaticKey = genStaticKeysCached(options.staticKeys || '');
+    isPlatformReservedTag = options.isReservedTag || no;
+    // first pass: mark all non-static nodes.
+    markStatic$1(root);
+    // second pass: mark static roots.
+    markStaticRoots(root, false);
+  }
+
+  function genStaticKeys$1 (keys) {
+    return makeMap(
+      'type,tag,attrsList,attrsMap,plain,parent,children,attrs,start,end,rawAttrsMap' +
+      (keys ? ',' + keys : '')
+    )
+  }
+
+  function markStatic$1 (node) {
+    node.static = isStatic(node);
+    if (node.type === 1) {
+      // do not make component slot content static. this avoids
+      // 1. components not able to mutate slot nodes
+      // 2. static slot content fails for hot-reloading
+      if (
+        !isPlatformReservedTag(node.tag) &&
+        node.tag !== 'slot' &&
+        node.attrsMap['inline-template'] == null
+      ) {
+        return
+      }
+      for (var i = 0, l = node.children.length; i < l; i++) {
+        var child = node.children[i];
+        markStatic$1(child);
+        if (!child.static) {
+          node.static = false;
+        }
+      }
+      if (node.ifConditions) {
+        for (var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
+          var block = node.ifConditions[i$1].block;
+          markStatic$1(block);
+          if (!block.static) {
+            node.static = false;
+          }
+        }
+      }
+    }
+  }
+
+  function markStaticRoots (node, isInFor) {
+    if (node.type === 1) {
+      if (node.static || node.once) {
+        node.staticInFor = isInFor;
+      }
+      // For a node to qualify as a static root, it should have children that
+      // are not just static text. Otherwise the cost of hoisting out will
+      // outweigh the benefits and it's better off to just always render it fresh.
+      if (node.static && node.children.length && !(
+        node.children.length === 1 &&
+        node.children[0].type === 3
+      )) {
+        node.staticRoot = true;
+        return
+      } else {
+        node.staticRoot = false;
+      }
+      if (node.children) {
+        for (var i = 0, l = node.children.length; i < l; i++) {
+          markStaticRoots(node.children[i], isInFor || !!node.for);
+        }
+      }
+      if (node.ifConditions) {
+        for (var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
+          markStaticRoots(node.ifConditions[i$1].block, isInFor);
+        }
+      }
+    }
+  }
+
+  function isStatic (node) {
+    if (node.type === 2) { // expression
+      return false
+    }
+    if (node.type === 3) { // text
+      return true
+    }
+    return !!(node.pre || (
+      !node.hasBindings && // no dynamic bindings
+      !node.if && !node.for && // not v-if or v-for or v-else
+      !isBuiltInTag(node.tag) && // not a built-in
+      isPlatformReservedTag(node.tag) && // not a component
+      !isDirectChildOfTemplateFor(node) &&
+      Object.keys(node).every(isStaticKey)
+    ))
+  }
+
+  function isDirectChildOfTemplateFor (node) {
+    while (node.parent) {
+      node = node.parent;
+      if (node.tag !== 'template') {
+        return false
+      }
+      if (node.for) {
+        return true
+      }
+    }
+    return false
+  }
+
+  /*  */
+
+  var fnExpRE = /^([\w$_]+|\([^)]*?\))\s*=>|^function\s*\(/;
+  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 = Object.keys(slots).some(function (key) {
+      var slot = slots[key];
+      return (
+        slot.slotTargetDynamic ||
+        slot.if ||
+        slot.for ||
+        containsSlotChild(slot) // is passing down slot from parent which may be dynamic
+      )
+    });
+
+    // #9534: if a component with scoped slots is inside a conditional branch,
+    // it's possible for the same component to be reused but with different
+    // compiled slot content. To avoid that, we generate a unique key based on
+    // the generated code of all the slot contents.
+    var needsKey = !!el.if;
+
+    // OR when it is inside another scoped slot or v-for (the reactivity may be
+    // disconnected due to the intermediate scope variable)
+    // #9438, #9506
+    // TODO: this can be further optimized by properly analyzing in-scope bindings
+    // and skip force updating ones that do not actually use scope variables.
+    if (!needsForceUpdate) {
+      var parent = el.parent;
+      while (parent) {
+        if (
+          (parent.slotScope && parent.slotScope !== emptySlotScopeToken) ||
+          parent.for
+        ) {
+          needsForceUpdate = true;
+          break
+        }
+        if (parent.if) {
+          needsKey = true;
+        }
+        parent = parent.parent;
+      }
+    }
+
+    var generatedSlots = Object.keys(slots)
+      .map(function (key) { return genScopedSlot(slots[key], state); })
+      .join(',');
+
+    return ("scopedSlots:_u([" + generatedSlots + "]" + (needsForceUpdate ? ",null,true" : "") + (!needsForceUpdate && needsKey ? (",null,false," + (hash(generatedSlots))) : "") + ")")
+  }
+
+  function hash(str) {
+    var hash = 5381;
+    var i = str.length;
+    while(i) {
+      hash = (hash * 33) ^ str.charCodeAt(--i);
+    }
+    return hash >>> 0
+  }
+
+  function containsSlotChild (el) {
+    if (el.type === 1) {
+      if (el.tag === 'slot') {
+        return true
+      }
+      return el.children.some(containsSlotChild)
+    }
+    return false
+  }
+
+  function genScopedSlot (
+    el,
+    state
+  ) {
+    var isLegacySyntax = el.attrsMap['slot-scope'];
+    if (el.if && !el.ifProcessed && !isLegacySyntax) {
+      return genIf(el, state, genScopedSlot, "null")
+    }
+    if (el.for && !el.forProcessed) {
+      return genFor(el, state, genScopedSlot)
+    }
+    var slotScope = el.slotScope === emptySlotScopeToken
+      ? ""
+      : String(el.slotScope);
+    var fn = "function(" + slotScope + "){" +
+      "return " + (el.tag === 'template'
+        ? el.if && isLegacySyntax
+          ? ("(" + (el.if) + ")?" + (genChildren(el, state) || 'undefined') + ":undefined")
+          : genChildren(el, state) || 'undefined'
+        : genElement(el, state)) + "}";
+    // reverse proxy v-slot without scope on this.$slots
+    var reverseProxy = slotScope ? "" : ",proxy:true";
+    return ("{key:" + (el.slotTarget || "\"default\"") + ",fn:" + fn + reverseProxy + "}")
+  }
+
+  function genChildren (
+    el,
+    state,
+    checkSkip,
+    altGenElement,
+    altGenNode
+  ) {
+    var children = el.children;
+    if (children.length) {
+      var el$1 = children[0];
+      // optimize single v-for
+      if (children.length === 1 &&
+        el$1.for &&
+        el$1.tag !== 'template' &&
+        el$1.tag !== 'slot'
+      ) {
+        var normalizationType = checkSkip
+          ? state.maybeComponent(el$1) ? ",1" : ",0"
+          : "";
+        return ("" + ((altGenElement || genElement)(el$1, state)) + normalizationType)
+      }
+      var normalizationType$1 = checkSkip
+        ? getNormalizationType(children, state.maybeComponent)
+        : 0;
+      var gen = altGenNode || genNode;
+      return ("[" + (children.map(function (c) { return gen(c, state); }).join(',')) + "]" + (normalizationType$1 ? ("," + normalizationType$1) : ''))
+    }
+  }
+
+  // determine the normalization needed for the children array.
+  // 0: no normalization needed
+  // 1: simple normalization needed (possible 1-level deep nested array)
+  // 2: full normalization needed
+  function getNormalizationType (
+    children,
+    maybeComponent
+  ) {
+    var res = 0;
+    for (var i = 0; i < children.length; i++) {
+      var el = children[i];
+      if (el.type !== 1) {
+        continue
+      }
+      if (needsNormalization(el) ||
+          (el.ifConditions && el.ifConditions.some(function (c) { return needsNormalization(c.block); }))) {
+        res = 2;
+        break
+      }
+      if (maybeComponent(el) ||
+          (el.ifConditions && el.ifConditions.some(function (c) { return maybeComponent(c.block); }))) {
+        res = 1;
+      }
+    }
+    return res
+  }
+
+  function needsNormalization (el) {
+    return el.for !== undefined || el.tag === 'template' || el.tag === 'slot'
+  }
+
+  function genNode (node, state) {
+    if (node.type === 1) {
+      return genElement(node, state)
+    } else if (node.type === 3 && node.isComment) {
+      return genComment(node)
+    } else {
+      return genText(node)
+    }
+  }
+
+  function genText (text) {
+    return ("_v(" + (text.type === 2
+      ? text.expression // no need for () because already wrapped in _s()
+      : transformSpecialNewlines(JSON.stringify(text.text))) + ")")
+  }
+
+  function genComment (comment) {
+    return ("_e(" + (JSON.stringify(comment.text)) + ")")
+  }
+
+  function genSlot (el, state) {
+    var slotName = el.slotName || '"default"';
+    var children = genChildren(el, state);
+    var res = "_t(" + slotName + (children ? ("," + children) : '');
+    var attrs = el.attrs || el.dynamicAttrs
+      ? genProps((el.attrs || []).concat(el.dynamicAttrs || []).map(function (attr) { return ({
+          // slot props are camelized
+          name: camelize(attr.name),
+          value: attr.value,
+          dynamic: attr.dynamic
+        }); }))
+      : null;
+    var bind$$1 = el.attrsMap['v-bind'];
+    if ((attrs || bind$$1) && !children) {
+      res += ",null";
+    }
+    if (attrs) {
+      res += "," + attrs;
+    }
+    if (bind$$1) {
+      res += (attrs ? '' : ',null') + "," + bind$$1;
+    }
+    return res + ')'
+  }
+
+  // componentName is el.component, take it as argument to shun flow's pessimistic refinement
+  function genComponent (
+    componentName,
+    el,
+    state
+  ) {
+    var children = el.inlineTemplate ? null : genChildren(el, state, true);
+    return ("_c(" + componentName + "," + (genData$2(el, state)) + (children ? ("," + children) : '') + ")")
+  }
+
+  function genProps (props) {
+    var staticProps = "";
+    var dynamicProps = "";
+    for (var i = 0; i < props.length; i++) {
+      var prop = props[i];
+      var value = transformSpecialNewlines(prop.value);
+      if (prop.dynamic) {
+        dynamicProps += (prop.name) + "," + value + ",";
+      } else {
+        staticProps += "\"" + (prop.name) + "\":" + value + ",";
+      }
+    }
+    staticProps = "{" + (staticProps.slice(0, -1)) + "}";
+    if (dynamicProps) {
+      return ("_d(" + staticProps + ",[" + (dynamicProps.slice(0, -1)) + "])")
+    } else {
+      return staticProps
+    }
+  }
+
+  // #3895, #4268
+  function transformSpecialNewlines (text) {
+    return text
+      .replace(/\u2028/g, '\\u2028')
+      .replace(/\u2029/g, '\\u2029')
+  }
+
+  /*  */
+
+
+
+  // these keywords should not appear inside expressions, but operators like
+  // typeof, instanceof and in are allowed
+  var prohibitedKeywordRE = new RegExp('\\b' + (
+    'do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const,' +
+    'super,throw,while,yield,delete,export,import,return,switch,default,' +
+    'extends,finally,continue,debugger,function,arguments'
+  ).split(',').join('\\b|\\b') + '\\b');
+
+  // these unary operators should not be used as property/method names
+  var unaryOperatorsRE = new RegExp('\\b' + (
+    'delete,typeof,void'
+  ).split(',').join('\\s*\\([^\\)]*\\)|\\b') + '\\s*\\([^\\)]*\\)');
+
+  // strip strings in expressions
+  var stripStringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g;
+
+  // detect problematic expressions in a template
+  function detectErrors (ast, warn) {
+    if (ast) {
+      checkNode(ast, warn);
+    }
+  }
+
+  function checkNode (node, warn) {
+    if (node.type === 1) {
+      for (var name in node.attrsMap) {
+        if (dirRE.test(name)) {
+          var value = node.attrsMap[name];
+          if (value) {
+            var range = node.rawAttrsMap[name];
+            if (name === 'v-for') {
+              checkFor(node, ("v-for=\"" + value + "\""), warn, range);
+            } else if (onRE.test(name)) {
+              checkEvent(value, (name + "=\"" + value + "\""), warn, range);
+            } else {
+              checkExpression(value, (name + "=\"" + value + "\""), warn, range);
+            }
+          }
+        }
+      }
+      if (node.children) {
+        for (var i = 0; i < node.children.length; i++) {
+          checkNode(node.children[i], warn);
+        }
+      }
+    } else if (node.type === 2) {
+      checkExpression(node.expression, node.text, warn, node);
+    }
+  }
+
+  function checkEvent (exp, text, warn, range) {
+    var stipped = exp.replace(stripStringRE, '');
+    var keywordMatch = stipped.match(unaryOperatorsRE);
+    if (keywordMatch && stipped.charAt(keywordMatch.index - 1) !== '$') {
+      warn(
+        "avoid using JavaScript unary operator as property name: " +
+        "\"" + (keywordMatch[0]) + "\" in expression " + (text.trim()),
+        range
+      );
+    }
+    checkExpression(exp, text, warn, range);
+  }
+
+  function checkFor (node, text, warn, range) {
+    checkExpression(node.for || '', text, warn, range);
+    checkIdentifier(node.alias, 'v-for alias', text, warn, range);
+    checkIdentifier(node.iterator1, 'v-for iterator', text, warn, range);
+    checkIdentifier(node.iterator2, 'v-for iterator', text, warn, range);
+  }
+
+  function checkIdentifier (
+    ident,
+    type,
+    text,
+    warn,
+    range
+  ) {
+    if (typeof ident === 'string') {
+      try {
+        new Function(("var " + ident + "=_"));
+      } catch (e) {
+        warn(("invalid " + type + " \"" + ident + "\" in expression: " + (text.trim())), range);
+      }
+    }
+  }
+
+  function checkExpression (exp, text, warn, range) {
+    try {
+      new Function(("return " + exp));
+    } catch (e) {
+      var keywordMatch = exp.replace(stripStringRE, '').match(prohibitedKeywordRE);
+      if (keywordMatch) {
+        warn(
+          "avoid using JavaScript keyword as property name: " +
+          "\"" + (keywordMatch[0]) + "\"\n  Raw expression: " + (text.trim()),
+          range
+        );
+      } else {
+        warn(
+          "invalid expression: " + (e.message) + " in\n\n" +
+          "    " + exp + "\n\n" +
+          "  Raw expression: " + (text.trim()) + "\n",
+          range
+        );
+      }
+    }
+  }
+
+  /*  */
+
+  var range = 2;
+
+  function generateCodeFrame (
+    source,
+    start,
+    end
+  ) {
+    if ( start === void 0 ) start = 0;
+    if ( end === void 0 ) end = source.length;
+
+    var lines = source.split(/\r?\n/);
+    var count = 0;
+    var res = [];
+    for (var i = 0; i < lines.length; i++) {
+      count += lines[i].length + 1;
+      if (count >= start) {
+        for (var j = i - range; j <= i + range || end > count; j++) {
+          if (j < 0 || j >= lines.length) { continue }
+          res.push(("" + (j + 1) + (repeat$1(" ", 3 - String(j + 1).length)) + "|  " + (lines[j])));
+          var lineLength = lines[j].length;
+          if (j === i) {
+            // push underline
+            var pad = start - (count - lineLength) + 1;
+            var length = end > count ? lineLength - pad : end - start;
+            res.push("   |  " + repeat$1(" ", pad) + repeat$1("^", length));
+          } else if (j > i) {
+            if (end > count) {
+              var length$1 = Math.min(end - count, lineLength);
+              res.push("   |  " + repeat$1("^", length$1));
+            }
+            count += lineLength + 1;
+          }
+        }
+        break
+      }
+    }
+    return res.join('\n')
+  }
+
+  function repeat$1 (str, n) {
+    var result = '';
+    if (n > 0) {
+      while (true) { // eslint-disable-line
+        if (n & 1) { result += str; }
+        n >>>= 1;
+        if (n <= 0) { break }
+        str += str;
+      }
+    }
+    return result
+  }
+
+  /*  */
+
+
+
+  function createFunction (code, errors) {
+    try {
+      return new Function(code)
+    } catch (err) {
+      errors.push({ err: err, code: code });
+      return noop
+    }
+  }
+
+  function createCompileToFunctionFn (compile) {
+    var cache = Object.create(null);
+
+    return function compileToFunctions (
+      template,
+      options,
+      vm
+    ) {
+      options = extend({}, options);
+      var warn$$1 = options.warn || warn;
+      delete options.warn;
+
+      /* istanbul ignore if */
+      {
+        // detect possible CSP restriction
+        try {
+          new Function('return 1');
+        } catch (e) {
+          if (e.toString().match(/unsafe-eval|CSP/)) {
+            warn$$1(
+              'It seems you are using the standalone build of Vue.js in an ' +
+              'environment with Content Security Policy that prohibits unsafe-eval. ' +
+              'The template compiler cannot work in this environment. Consider ' +
+              'relaxing the policy to allow unsafe-eval or pre-compiling your ' +
+              'templates into render functions.'
+            );
+          }
+        }
+      }
+
+      // check cache
+      var key = options.delimiters
+        ? String(options.delimiters) + template
+        : template;
+      if (cache[key]) {
+        return cache[key]
+      }
+
+      // compile
+      var compiled = compile(template, options);
+
+      // check compilation errors/tips
+      {
+        if (compiled.errors && compiled.errors.length) {
+          if (options.outputSourceRange) {
+            compiled.errors.forEach(function (e) {
+              warn$$1(
+                "Error compiling template:\n\n" + (e.msg) + "\n\n" +
+                generateCodeFrame(template, e.start, e.end),
+                vm
+              );
+            });
+          } else {
+            warn$$1(
+              "Error compiling template:\n\n" + template + "\n\n" +
+              compiled.errors.map(function (e) { return ("- " + e); }).join('\n') + '\n',
+              vm
+            );
+          }
+        }
+        if (compiled.tips && compiled.tips.length) {
+          if (options.outputSourceRange) {
+            compiled.tips.forEach(function (e) { return tip(e.msg, vm); });
+          } else {
+            compiled.tips.forEach(function (msg) { return tip(msg, vm); });
+          }
+        }
+      }
+
+      // turn code into functions
+      var res = {};
+      var fnGenErrors = [];
+      res.render = createFunction(compiled.render, fnGenErrors);
+      res.staticRenderFns = compiled.staticRenderFns.map(function (code) {
+        return createFunction(code, fnGenErrors)
+      });
+
+      // check function generation errors.
+      // this should only happen if there is a bug in the compiler itself.
+      // mostly for codegen development use
+      /* istanbul ignore if */
+      {
+        if ((!compiled.errors || !compiled.errors.length) && fnGenErrors.length) {
+          warn$$1(
+            "Failed to generate render function:\n\n" +
+            fnGenErrors.map(function (ref) {
+              var err = ref.err;
+              var code = ref.code;
+
+              return ((err.toString()) + " in\n\n" + code + "\n");
+          }).join('\n'),
+            vm
+          );
+        }
+      }
+
+      return (cache[key] = res)
+    }
+  }
+
+  /*  */
+
+  function createCompilerCreator (baseCompile) {
+    return function createCompiler (baseOptions) {
+      function compile (
+        template,
+        options
+      ) {
+        var finalOptions = Object.create(baseOptions);
+        var errors = [];
+        var tips = [];
+
+        var warn = function (msg, range, tip) {
+          (tip ? tips : errors).push(msg);
+        };
+
+        if (options) {
+          if (options.outputSourceRange) {
+            // $flow-disable-line
+            var leadingSpaceLength = template.match(/^\s*/)[0].length;
+
+            warn = function (msg, range, tip) {
+              var data = { msg: msg };
+              if (range) {
+                if (range.start != null) {
+                  data.start = range.start + leadingSpaceLength;
+                }
+                if (range.end != null) {
+                  data.end = range.end + leadingSpaceLength;
+                }
+              }
+              (tip ? tips : errors).push(data);
+            };
+          }
+          // merge custom modules
+          if (options.modules) {
+            finalOptions.modules =
+              (baseOptions.modules || []).concat(options.modules);
+          }
+          // merge custom directives
+          if (options.directives) {
+            finalOptions.directives = extend(
+              Object.create(baseOptions.directives || null),
+              options.directives
+            );
+          }
+          // copy other options
+          for (var key in options) {
+            if (key !== 'modules' && key !== 'directives') {
+              finalOptions[key] = options[key];
+            }
+          }
+        }
+
+        finalOptions.warn = warn;
+
+        var compiled = baseCompile(template.trim(), finalOptions);
+        {
+          detectErrors(compiled.ast, warn);
+        }
+        compiled.errors = errors;
+        compiled.tips = tips;
+        return compiled
+      }
+
+      return {
+        compile: compile,
+        compileToFunctions: createCompileToFunctionFn(compile)
+      }
+    }
+  }
+
+  /*  */
+
+  // `createCompilerCreator` allows creating compilers that use alternative
+  // parser/optimizer/codegen, e.g the SSR optimizing compiler.
+  // Here we just export a default compiler using the default parts.
+  var createCompiler = createCompilerCreator(function baseCompile (
+    template,
+    options
+  ) {
+    var ast = parse(template.trim(), options);
+    if (options.optimize !== false) {
+      optimize(ast, options);
+    }
+    var code = generate(ast, options);
+    return {
+      ast: ast,
+      render: code.render,
+      staticRenderFns: code.staticRenderFns
+    }
+  });
+
+  /*  */
+
+  var ref$1 = createCompiler(baseOptions);
+  var compile = ref$1.compile;
+  var compileToFunctions = ref$1.compileToFunctions;
+
+  /*  */
+
+  // check whether current browser encodes a char inside attribute values
+  var div;
+  function getShouldDecode (href) {
+    div = div || document.createElement('div');
+    div.innerHTML = href ? "<a href=\"\n\"/>" : "<div a=\"\n\"/>";
+    return div.innerHTML.indexOf('&#10;') > 0
+  }
+
+  // #3663: IE encodes newlines inside attribute values while other browsers don't
+  var shouldDecodeNewlines = inBrowser ? getShouldDecode(false) : false;
+  // #6828: chrome encodes content in a[href]
+  var shouldDecodeNewlinesForHref = inBrowser ? getShouldDecode(true) : false;
+
+  /*  */
+
+  var idToTemplate = cached(function (id) {
+    var el = query(id);
+    return el && el.innerHTML
+  });
+
+  var mount = Vue.prototype.$mount;
+  Vue.prototype.$mount = function (
+    el,
+    hydrating
+  ) {
+    el = el && query(el);
+
+    /* istanbul ignore if */
+    if (el === document.body || el === document.documentElement) {
+      warn(
+        "Do not mount Vue to <html> or <body> - mount to normal elements instead."
+      );
+      return this
+    }
+
+    var options = this.$options;
+    // resolve template/el and convert to render function
+    if (!options.render) {
+      var template = options.template;
+      if (template) {
+        if (typeof template === 'string') {
+          if (template.charAt(0) === '#') {
+            template = idToTemplate(template);
+            /* istanbul ignore if */
+            if (!template) {
+              warn(
+                ("Template element not found or is empty: " + (options.template)),
+                this
+              );
+            }
+          }
+        } else if (template.nodeType) {
+          template = template.innerHTML;
+        } else {
+          {
+            warn('invalid template option:' + template, this);
+          }
+          return this
+        }
+      } else if (el) {
+        template = getOuterHTML(el);
+      }
+      if (template) {
+        /* istanbul ignore if */
+        if (config.performance && mark) {
+          mark('compile');
+        }
+
+        var ref = compileToFunctions(template, {
+          outputSourceRange: "development" !== 'production',
+          shouldDecodeNewlines: shouldDecodeNewlines,
+          shouldDecodeNewlinesForHref: shouldDecodeNewlinesForHref,
+          delimiters: options.delimiters,
+          comments: options.comments
+        }, this);
+        var render = ref.render;
+        var staticRenderFns = ref.staticRenderFns;
+        options.render = render;
+        options.staticRenderFns = staticRenderFns;
+
+        /* istanbul ignore if */
+        if (config.performance && mark) {
+          mark('compile end');
+          measure(("vue " + (this._name) + " compile"), 'compile', 'compile end');
+        }
+      }
+    }
+    return mount.call(this, el, hydrating)
+  };
+
+  /**
+   * Get outerHTML of elements, taking care
+   * of SVG elements in IE as well.
+   */
+  function getOuterHTML (el) {
+    if (el.outerHTML) {
+      return el.outerHTML
+    } else {
+      var container = document.createElement('div');
+      container.appendChild(el.cloneNode(true));
+      return container.innerHTML
+    }
+  }
+
+  Vue.compile = compileToFunctions;
+
+  return Vue;
+
+}));
diff --git a/webroot/assets/vuex.js b/webroot/assets/vuex.js
new file mode 100644
index 0000000..0ffa597
--- /dev/null
+++ b/webroot/assets/vuex.js
@@ -0,0 +1,6 @@
+/**
+ * vuex v2.0.0
+ * (c) 2016 Evan You
+ * @license MIT
+ */
+!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):t.Vuex=e()}(this,function(){"use strict";function t(t){b&&(t._devtoolHook=b,b.emit("vuex:init",t),b.on("vuex:travel-to-state",function(e){t.replaceState(e)}),t.subscribe(function(t,e){b.emit("vuex:mutation",t,e)}))}function e(t){function e(){var t=this.$options;t.store?this.$store=t.store:t.parent&&t.parent.$store&&(this.$store=t.parent.$store)}var n=Number(t.version.split(".")[0]);if(n>=2){var o=t.config._lifecycleHooks.indexOf("init")>-1;t.mixin(o?{init:e}:{beforeCreate:e})}else{var i=t.prototype._init;t.prototype._init=function(t){void 0===t&&(t={}),t.init=t.init?[e].concat(t.init):e,i.call(this,t)}}}function n(t){var e={};return s(t).forEach(function(t){var n=t.key,o=t.val;e[n]=function(){return"function"==typeof o?o.call(this,this.$store.state,this.$store.getters):this.$store.state[o]}}),e}function o(t){var e={};return s(t).forEach(function(t){var n=t.key,o=t.val;e[n]=function(){for(var t=[],e=arguments.length;e--;)t[e]=arguments[e];return this.$store.commit.apply(this.$store,[o].concat(t))}}),e}function i(t){var e={};return s(t).forEach(function(t){var n=t.key,o=t.val;e[n]=function(){return o in this.$store.getters||console.error("[vuex] unknown getter: "+o),this.$store.getters[o]}}),e}function r(t){var e={};return s(t).forEach(function(t){var n=t.key,o=t.val;e[n]=function(){for(var t=[],e=arguments.length;e--;)t[e]=arguments[e];return this.$store.dispatch.apply(this.$store,[o].concat(t))}}),e}function s(t){return Array.isArray(t)?t.map(function(t){return{key:t,val:t}}):Object.keys(t).map(function(e){return{key:e,val:t[e]}})}function u(t){return null!==t&&"object"==typeof t}function a(t){return t&&"function"==typeof t.then}function c(t,e){if(!t)throw new Error("[vuex] "+e)}function f(t,e){if(e.actions&&(t.actions=e.actions),e.mutations&&(t.mutations=e.mutations),e.getters&&(t.getters=e.getters),e.modules)for(var n in e.modules){if(!t.modules||!t.modules[n])return void console.warn("[vuex] trying to add a new module '"+n+"' on hot reloading, manual reload is needed");f(t.modules[n],e.modules[n])}}function l(t){t._actions=Object.create(null),t._mutations=Object.create(null),t._wrappedGetters=Object.create(null);var e=t.state;p(t,e,[],t._options,!0),Object.keys(t._runtimeModules).forEach(function(n){p(t,e,n.split("."),t._runtimeModules[n],!0)}),h(t,e)}function h(t,e){var n=t._vm;t.getters={};var o=t._wrappedGetters,i={};Object.keys(o).forEach(function(e){var n=o[e];i[e]=function(){return n(t)},Object.defineProperty(t.getters,e,{get:function(){return t._vm[e]}})});var r=w.config.silent;w.config.silent=!0,t._vm=new w({data:{state:e},computed:i}),w.config.silent=r,t.strict&&y(t),n&&(t._withCommit(function(){n.state=null}),w.nextTick(function(){return n.$destroy()}))}function p(t,e,n,o,i){var r=!n.length,s=o.state,u=o.actions,a=o.mutations,c=o.getters,f=o.modules;if(!r&&!i){var l=_(e,n.slice(0,-1)),h=n[n.length-1];t._withCommit(function(){w.set(l,h,s||{})})}a&&Object.keys(a).forEach(function(e){d(t,e,a[e],n)}),u&&Object.keys(u).forEach(function(e){m(t,e,u[e],n)}),c&&v(t,c,n),f&&Object.keys(f).forEach(function(o){p(t,e,n.concat(o),f[o],i)})}function d(t,e,n,o){void 0===o&&(o=[]);var i=t._mutations[e]||(t._mutations[e]=[]);i.push(function(e){n(_(t.state,o),e)})}function m(t,e,n,o){void 0===o&&(o=[]);var i=t._actions[e]||(t._actions[e]=[]),r=t.dispatch,s=t.commit;i.push(function(e,i){var u=n({dispatch:r,commit:s,getters:t.getters,state:_(t.state,o),rootState:t.state},e,i);return a(u)||(u=Promise.resolve(u)),t._devtoolHook?u.catch(function(e){throw t._devtoolHook.emit("vuex:error",e),e}):u})}function v(t,e,n){Object.keys(e).forEach(function(o){var i=e[o];return t._wrappedGetters[o]?void console.error("[vuex] duplicate getter key: "+o):void(t._wrappedGetters[o]=function(t){return i(_(t.state,n),t.getters,t.state)})})}function y(t){t._vm.$watch("state",function(){c(t._committing,"Do not mutate vuex store state outside mutation handlers.")},{deep:!0,sync:!0})}function _(t,e){return e.length?e.reduce(function(t,e){return t[e]},t):t}function g(t){return w?void console.error("[vuex] already installed. Vue.use(Vuex) should be called only once."):(w=t,void e(w))}var w,b="undefined"!=typeof window&&window.__VUE_DEVTOOLS_GLOBAL_HOOK__,x=function(e){var n=this;void 0===e&&(e={}),c(w,"must call Vue.use(Vuex) before creating a store instance."),c("undefined"!=typeof Promise,"vuex requires a Promise polyfill in this browser.");var o=e.state;void 0===o&&(o={});var i=e.plugins;void 0===i&&(i=[]);var r=e.strict;void 0===r&&(r=!1),this._options=e,this._committing=!1,this._actions=Object.create(null),this._mutations=Object.create(null),this._wrappedGetters=Object.create(null),this._runtimeModules=Object.create(null),this._subscribers=[],this._watcherVM=new w;var s=this,u=this,a=u.dispatch,f=u.commit;this.dispatch=function(t,e){return a.call(s,t,e)},this.commit=function(t,e,n){return f.call(s,t,e,n)},this.strict=r,p(this,o,[],e),h(this,o),i.concat(t).forEach(function(t){return t(n)})},O={state:{}};O.state.get=function(){return this._vm.state},O.state.set=function(t){c(!1,"Use store.replaceState() to explicit replace store state.")},x.prototype.commit=function(t,e,n){var o=this;u(t)&&t.type&&(n=e,e=t,t=t.type);var i={type:t,payload:e},r=this._mutations[t];return r?(this._withCommit(function(){r.forEach(function(t){t(e)})}),void(n&&n.silent||this._subscribers.forEach(function(t){return t(i,o.state)}))):void console.error("[vuex] unknown mutation type: "+t)},x.prototype.dispatch=function(t,e){u(t)&&t.type&&(e=t,t=t.type);var n=this._actions[t];return n?n.length>1?Promise.all(n.map(function(t){return t(e)})):n[0](e):void console.error("[vuex] unknown action type: "+t)},x.prototype.subscribe=function(t){var e=this._subscribers;return e.indexOf(t)<0&&e.push(t),function(){var n=e.indexOf(t);n>-1&&e.splice(n,1)}},x.prototype.watch=function(t,e,n){var o=this;return c("function"==typeof t,"store.watch only accepts a function."),this._watcherVM.$watch(function(){return t(o.state)},e,n)},x.prototype.replaceState=function(t){var e=this;this._withCommit(function(){e._vm.state=t})},x.prototype.registerModule=function(t,e){"string"==typeof t&&(t=[t]),c(Array.isArray(t),"module path must be a string or an Array."),this._runtimeModules[t.join(".")]=e,p(this,this.state,t,e),h(this,this.state)},x.prototype.unregisterModule=function(t){var e=this;"string"==typeof t&&(t=[t]),c(Array.isArray(t),"module path must be a string or an Array."),delete this._runtimeModules[t.join(".")],this._withCommit(function(){var n=_(e.state,t.slice(0,-1));w.delete(n,t[t.length-1])}),l(this)},x.prototype.hotUpdate=function(t){f(this._options,t),l(this)},x.prototype._withCommit=function(t){var e=this._committing;this._committing=!0,t(),this._committing=e},Object.defineProperties(x.prototype,O),"undefined"!=typeof window&&window.Vue&&g(window.Vue);var k={Store:x,install:g,mapState:n,mapMutations:o,mapGetters:i,mapActions:r};return k});
\ No newline at end of file
diff --git a/webroot/css/main.css b/webroot/css/main.css
new file mode 100644
index 0000000..2799ed1
--- /dev/null
+++ b/webroot/css/main.css
@@ -0,0 +1,10 @@
+.p-navigation__logo {
+	font-size: 1.5rem;
+	line-height: 3rem;
+}
+.p-navigation .p-navigation__logo .p-navigation__link {
+	color: red;
+}
+.p-navigation .p-navigation__logo.online .p-navigation__link {
+	color: black;
+}
diff --git a/webroot/index.html b/webroot/index.html
new file mode 100644
index 0000000..8da7da1
--- /dev/null
+++ b/webroot/index.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html>
+	<head>
+		<meta charset="utf-8"/>
+		<meta name="viewport" content="width=device-width, initial-scale=1"/>
+		<title>Wifictld</title>
+		<link rel="stylesheet" href="assets/vanilla-framework.css" />
+		<link rel="stylesheet" href="css/main.css" />
+		<script src="assets/vue.js"></script>
+		<script src="assets/vue-route.js"></script>
+		<script src="assets/vuex.js"></script>
+		<script src="assets/vue-websocket.js"></script>
+	</head>
+	<body role="document">
+		<div id="app">
+			<header id="navigation" class="p-navigation">
+					<div class="p-navigation__banner">
+						<navbar-logo></navbar-logo>
+						<a href="#navigation" class="p-navigation__toggle--open" title="menu">Menu</a>
+						<a href="#navigation-closed" class="p-navigation__toggle--close" title="close menu">Close menu</a>
+					</div>
+					<nav class="p-navigation__nav" role="menubar">
+						<span class="u-off-screen">
+							<a href="#main-content">Jump to main content</a>
+						</span>
+						<ul class="p-navigation__links" role="menu">
+							<router-link :to="{name: 'aps' }" tag="li" class="p-navigation__link" active-class="is-selected">
+								<a>Access Points</a>
+							</router-link>
+							<router-link :to="{name: 'clients' }" tag="li" class="p-navigation__link" active-class="is-selected">
+								<a>Clients</a>
+							</router-link>
+						</ul>
+					</nav>
+				</header>
+				<div class="content">
+					<router-view></router-view>
+				</div>
+			</div>
+			<script src="js/view/accesspoint.js"></script>
+			<script src="js/view/clients.js"></script>
+			<script src="js/store.js"></script>
+			<script src="js/data.js"></script>
+			<script src="js/main.js"></script>
+	</body>
+</html>
diff --git a/webroot/js/data.js b/webroot/js/data.js
new file mode 100644
index 0000000..988fc27
--- /dev/null
+++ b/webroot/js/data.js
@@ -0,0 +1,20 @@
+store.commit('setEvent', {
+	subject:"wifictld_pkg",
+	callback: (state, msg) => {
+
+		// add to ap list
+		const ip = msg.body.ip;
+		if(state.controller._ap[ip] === undefined){
+			state.controller.ap.push(ip)
+			state.controller._ap[ip] = null;
+		}
+
+		// add clients
+		const client = msg.body.msg.client;
+		if (state.controller.clients[client.addr] === undefined) {
+			state.controller._clients.push(client.addr)
+		}
+		client.ap = ip;
+		state.controller.clients[client.addr] = client;
+	}
+})
diff --git a/webroot/js/main.js b/webroot/js/main.js
new file mode 100644
index 0000000..1372596
--- /dev/null
+++ b/webroot/js/main.js
@@ -0,0 +1,35 @@
+const router = new VueRouter({
+	store,
+	routes: [
+		{ path: '/ap', component: ViewAccessPoints, name: "aps" },
+		{ path: '/ap/clients/:ip', component: ViewClients, name: "ap.clients"},
+		{ path: '/clients', component: ViewClients, name: "clients" },
+		{ path: '/', redirect: '/ap' }
+	]
+})
+
+VueNativeSock.default.install(Vue, `//${location.host}${location.pathname}ws`, {
+	store: store,
+	reconnection: true,
+	reconnectionDelay: 5000,
+	format: 'json',
+})
+
+const NavbarLogo = {
+	template: `<div class="p-navigation__logo" v-bind:class="{ online: isOnline }">
+		<a class="p-navigation__link" href="/">Wifictld</a>
+	</div>`,
+	computed: {
+		isOnline () {
+			return this.$store.state.socket.isConnected
+		}
+	}
+};
+
+
+const app = new Vue({
+	el: '#app',
+	store,
+	router,
+	components: { NavbarLogo },
+})
diff --git a/webroot/js/store.js b/webroot/js/store.js
new file mode 100644
index 0000000..78d2520
--- /dev/null
+++ b/webroot/js/store.js
@@ -0,0 +1,104 @@
+
+function newUUID () {
+	/* eslint-disable */
+	return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {
+		const r = Math.random() * 16 | 0,
+			v = c === 'x' ? r : r & 0x3 | 0x8;
+		return v.toString(16);
+	});
+	/* eslint-enable */
+}
+
+const store = new Vuex.Store({
+	state: {
+		socket: {
+			_session: localStorage.getItem('session'),
+			isConnected: false,
+			reconnectError: false,
+			eventMSGID: {},
+			eventTo: {},
+		},
+		controller: {
+			_ap : {},
+			ap: [],
+			_clients: [],
+			clients: {},
+		},
+	},
+	mutations:{
+		SOCKET_ONOPEN (state, event)  {
+			state.socket.isConnected = true
+		},
+		SOCKET_ONCLOSE (state, event)  {
+			state.socket.isConnected = false
+		},
+		SOCKET_ONERROR (state, event)  {
+			console.error(state, event)
+		},
+		// default handler called for all methods
+		SOCKET_ONMESSAGE (state, msg)  {
+			if (msg.subject === 'session_init') {
+				if (state.socket._session === null) {
+					state.socket._session = newUUID();
+					localStorage.setItem('session', state.socket._session);
+				}
+				msg.id = state.socket._session;
+				Vue.prototype.$socket.sendObj(msg);
+				return;
+			}
+
+			const msgFunc = state.socket.eventMSGID[msg.id];
+			if (msgFunc) {
+				msgFunc(state, msg);
+				delete state.socket.eventMSGID[msg.id];
+				return;
+			}
+
+			const eventFuncs = state.socket.eventTo[msg.subject];
+			if (typeof eventFuncs === 'object' && eventFuncs.length > 0) {
+				for (const key in eventFuncs) {
+					const func = eventFuncs[key];
+					if (func) {
+						func(state, msg);
+					}
+				}
+				return;
+			}
+			console.log(`unable to identify message: ${msg.subject}`);
+
+		},
+		// mutations for reconnect methods
+		SOCKET_RECONNECT(state, count) {
+			console.info(state, "reconnect:", count)
+		},
+		SOCKET_RECONNECT_ERROR(state) {
+			state.socket.reconnectError = true;
+		},
+		setEvent (state, data) {
+			state.socket.eventTo[data.subject] = [data.callback];
+		},
+		addEvent (state, data) {
+			if (typeof state.socket.eventTo[data.subject] !== 'object') {
+				state.socket.eventTo[data.subject] = [];
+			}
+			state.socket.eventTo[data.subject].push(data.callback);
+		},
+		delEvent (state, data) {
+			if (typeof state.socket.eventTo[data.subject] === 'object' && state.socket.eventTo[data.subject].length > 1) {
+				state.socket.eventTo[data.subject].pop(data.callback);
+			} else {
+				state.socket.eventTo[data.subject] = [];
+			}
+		},
+		call (state, data) {
+			if (!data.msg.id) {
+				data.msg.id = newUUID();
+			}
+			const ret = Vue.prototype.$socket.sendObj(data.msg);
+			if (typeof data.callback === 'function') {
+				state.socket.eventMSGID[data.msg.id] = data.callback;
+			}
+			return ret;
+		}
+	}
+})
diff --git a/webroot/js/view/accesspoint.js b/webroot/js/view/accesspoint.js
new file mode 100644
index 0000000..296bbe8
--- /dev/null
+++ b/webroot/js/view/accesspoint.js
@@ -0,0 +1,37 @@
+const ViewAccessPoints = {
+	template: `<div class="row">
+		<p><span class="p-heading--one">AccessPoints</span></p>
+		<table class="p-table--mobile-card" role="grid">
+			<thead>
+				<tr role="row">
+					<th scope="col" role="columnheader" aria-sort="none">IP</th>
+					<th scope="col" role="columnheader" aria-sort="none" class="u-align--right">Users</th>
+				</tr>
+			</thead>
+			<tbody>
+				<tr role="row" v-for="item in getAPs">
+					<td role="rowheader" aria-label="IP">{{ item.ip.substring(21) }}</td>
+					<td role="gridcell" aria-label="Users" class="u-align--right">
+						<router-link :to="{ name: 'ap.clients', params: { ip: item.ip }}">
+							{{ item.clients }}
+						</router-link>
+					</td>
+				</tr>
+			</tbody>
+		</table>
+	</div>`,
+	computed: {
+		getAPs () {
+			const state = this.$store.state;
+			return state.controller.ap.map(function (ip) {
+				return {
+					ip: ip,
+					clients: state.controller._clients.filter(function (hwaddr) {
+						const client = state.controller.clients[hwaddr];
+						return client.ap === ip;
+					}).length,
+				};
+			})
+		},
+	}
+}
diff --git a/webroot/js/view/clients.js b/webroot/js/view/clients.js
new file mode 100644
index 0000000..ae8170b
--- /dev/null
+++ b/webroot/js/view/clients.js
@@ -0,0 +1,42 @@
+const ViewClients = {
+	template: `<div class="row">
+		<p>
+			<span class="p-heading--one">Clients</span>
+			<sub v-if="$route.params.ip">of Router {{ $route.params.ip.substring(21) }}</sub>
+		</p>
+		<table class="p-table--mobile-card" role="grid">
+			<thead>
+				<tr role="row">
+					<th scope="col" role="columnheader" aria-sort="none">Addr</th>
+					<th scope="col" role="columnheader" aria-sort="none">AP</th>
+					<th scope="col" role="columnheader" aria-sort="none" class="u-align--right">FreqHighs</th>
+					<th scope="col" role="columnheader" aria-sort="none" class="u-align--right">SignalLow</th>
+					<th scope="col" role="columnheader" aria-sort="none" class="u-align--right">SignalHigh</th>
+				</tr>
+			</thead>
+			<tbody>
+				<tr role="row" v-for="item in getClients">
+					<td role="rowheader" aria-label="Addr">{{ item.addr.substring(12) }}</td>
+					<td role="gridcell" aria-label="AP">
+						<router-link :to="{ name: 'ap.clients', params: { ip: item.ap }}">
+							{{ item.ap.substring(21) }}
+						</router-link>
+					</td>
+					<td role="gridcell" aria-label="Freq Highs" class="u-align--right">{{ item.freq_highest }}</td>
+					<td role="gridcell" aria-label="Signal LowF" class="u-align--right">{{ item.signal_low_freq }}</td>
+					<td role="gridcell" aria-label="Signal HighF" class="u-align--right">{{ item.signal_high_freq }}</td>
+				</tr>
+			</tbody>
+		</table>
+	</div>`,
+	computed: {
+		getClients () {
+			const state = this.$store.state,
+				apIP = this.$route.params.ip;
+
+			return state.controller._clients.map(function(addr) {
+				return state.controller.clients[addr];
+			}).filter((client)=> (apIP === undefined || client.ap === apIP));
+		},
+	}
+}