diff --git a/CMakeLists.txt b/CMakeLists.txt
index cd4e7037..45d4bf74 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 3.0)
 
 project(Sunshine)
 
-set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR})
+set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
 
 add_subdirectory(third-party/Simple-Web-Server)
 
@@ -102,18 +102,45 @@ else()
 	add_compile_definitions(SUNSHINE_PLATFORM="linux")
 	list(APPEND SUNSHINE_DEFINITIONS APPS_JSON="apps_linux.json")
 
-	find_package(X11 REQUIRED)
-	find_package(FFmpeg REQUIRED)
+	option(SUNSHINE_ENABLE_DRM "Enable KMS grab if available" ON)
+	option(SUNSHINE_ENABLE_X11 "Enable X11 grab if available" ON)
 
-	set(PLATFORM_TARGET_FILES
+	if(${SUNSHINE_ENABLE_X11})
+		find_package(X11)
+	endif()
+	if(${SUNSHINE_ENABLE_DRM})
+		find_package(LIBDRM)
+	endif()
+
+	find_package(FFMPEG REQUIRED)
+
+	if(X11_FOUND)
+		add_compile_definitions(SUNSHINE_BUILD_X11)
+		include_directories(${X11_INCLUDE_DIR})
+		list(APPEND PLATFORM_TARGET_FILES sunshine/platform/linux/x11grab.cpp)
+	endif()
+	if(LIBDRM_FOUND)
+		add_compile_definitions(SUNSHINE_BUILD_DRM)
+		include_directories(${LIBDRM_INCLUDE_DIRS})
+		list(APPEND PLATFORM_LIBRARIES ${LIBDRM_LIBRARIES})
+		list(APPEND PLATFORM_TARGET_FILES sunshine/platform/linux/kmsgrab.cpp)
+		list(APPEND SUNSHINE_DEFINITIONS EGL_NO_X11=1)
+	endif()
+	if(NOT X11_FOUND AND NOT LIBDRM_FOUND)
+		message(FATAL "Couldn't find either x11 or libdrm")
+	endif()
+
+	list(APPEND PLATFORM_TARGET_FILES
 		sunshine/platform/linux/publish.cpp
 		sunshine/platform/linux/vaapi.h
 		sunshine/platform/linux/vaapi.cpp
+		sunshine/platform/linux/graphics.h
+		sunshine/platform/linux/graphics.cpp
 		sunshine/platform/linux/misc.h
 		sunshine/platform/linux/misc.cpp
-		sunshine/platform/linux/display.cpp
 		sunshine/platform/linux/audio.cpp
 		sunshine/platform/linux/input.cpp
+		sunshine/platform/linux/x11grab.h
 		third-party/glad/src/egl.c
 		third-party/glad/src/gl.c
 		third-party/glad/include/EGL/eglplatform.h
@@ -121,22 +148,14 @@ else()
 		third-party/glad/include/glad/gl.h
 		third-party/glad/include/glad/egl.h)
 		
-	set(PLATFORM_LIBRARIES
-		Xfixes
-		Xtst
-		xcb
-		xcb-shm
-		xcb-xfixes
-		Xrandr
-		${X11_LIBRARIES}
+	list(APPEND PLATFORM_LIBRARIES
 		dl
 		evdev
 		pulse
 		pulse-simple
 		)
 	
-	set(PLATFORM_INCLUDE_DIRS
-		${X11_INCLUDE_DIR}
+	include_directories(
 		/usr/include/libevdev-1.0
 		third-party/glad/include)
 
diff --git a/README.md b/README.md
index b78bc234..dea0e76f 100644
--- a/README.md
+++ b/README.md
@@ -14,21 +14,38 @@ Sunshine is a Gamestream host for Moonlight
 ## Linux
 
 ### Requirements:
+
 Ubuntu 20.04:
-Install the following
+Install the following:
+#### X11 Only
 ```
 sudo apt install cmake gcc-10 g++-10 libssl-dev libavdevice-dev libboost-thread-dev libboost-filesystem-dev libboost-log-dev libpulse-dev libopus-dev libxtst-dev libx11-dev libxrandr-dev libxfixes-dev libevdev-dev libxcb1-dev libxcb-shm0-dev libxcb-xfixes0-dev
 ```
 
+#### X11 + KMS (Requires additional setup)
+KMS allows Sunshine to grab the monitor with lower latency then through X11
+
+```
+sudo apt install cmake gcc-10 g++-10 libssl-dev libavdevice-dev libboost-thread-dev libboost-filesystem-dev libboost-log-dev libpulse-dev libopus-dev libxtst-dev libx11-dev libxrandr-dev libxfixes-dev libevdev-dev libxcb1-dev libxcb-shm0-dev libxcb-xfixes0-dev libdrm-dev
+```
+
 ### Compilation:
+
+#### X11 Only
+- `git clone https://github.com/loki-47-6F-64/sunshine.git --recurse-submodules`
+- `cd sunshine && mkdir build && cd build`
+- `cmake -DCMAKE_C_COMPILER=gcc-10 -DCMAKE_CXX_COMPILER=g++-10 -DSUNSHINE_ENABLE_DRM=OFF ..`
+- `make -j ${nproc}`
+
+#### X11 + KMS
 - `git clone https://github.com/loki-47-6F-64/sunshine.git --recurse-submodules`
 - `cd sunshine && mkdir build && cd build`
 - `cmake -DCMAKE_C_COMPILER=gcc-10 -DCMAKE_CXX_COMPILER=g++-10 ..`
 - `make -j ${nproc}`
 
-
 ### Setup:
 sunshine needs access to uinput to create mouse and gamepad events:
+
 - Add user to group 'input':
 	`usermod -a -G input $USER`
 - Create udev rules:
@@ -52,6 +69,11 @@ sunshine needs access to uinput to create mouse and gamepad events:
 
 - `assets/apps.json` is an [example](README.md#application-list) of a list of applications that are started just before running a stream
 
+#### Additional Setup for KMS:
+Please note that `cap_sys_admin` may as well be root, except you don't need to be root to run it.
+It's necessary to allow Sunshine to use KMS
+- `sudo setcap cap_sys_admin+ep sunshine`
+
 ### Trouleshooting:
 - If you get "Could not create Sunshine Gamepad: Permission Denied", ensure you are part of the group "input":
 	- `groups $USER`
diff --git a/appveyor.yml b/appveyor.yml
index bee10a61..02a93587 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -9,7 +9,7 @@ environment:
 
 install:
   - sh: sudo apt update --ignore-missing
-  - sh: sudo apt install -y build-essential fakeroot gcc-10 g++-10 cmake libssl-dev libavdevice-dev libboost-thread-dev libboost-filesystem-dev libboost-log-dev libpulse-dev libopus-dev libxtst-dev libx11-dev libxrandr-dev libxfixes-dev libevdev-dev libxcb1-dev libxcb-shm0-dev libxcb-xfixes0-dev 
+  - sh: sudo apt install -y build-essential fakeroot gcc-10 g++-10 cmake libssl-dev libavdevice-dev libboost-thread-dev libboost-filesystem-dev libboost-log-dev libpulse-dev libopus-dev libxtst-dev libx11-dev libxrandr-dev libxfixes-dev libevdev-dev libxcb1-dev libxcb-shm0-dev libxcb-xfixes0-dev libdrm-dev
   - cmd: C:\msys64\usr\bin\bash -lc "pacman --needed --noconfirm -S mingw-w64-x86_64-openssl mingw-w64-x86_64-cmake mingw-w64-x86_64-toolchain mingw-w64-x86_64-opus mingw-w64-x86_64-x265 mingw-w64-x86_64-boost git yasm nasm diffutils make"
 
 before_build:
diff --git a/assets/web/apps.html b/assets/web/apps.html
index 812d5588..c87dbc89 100644
--- a/assets/web/apps.html
+++ b/assets/web/apps.html
@@ -150,6 +150,22 @@
           that sleeps indefinitely
         </div>
       </div>
+      <!--working dir-->
+      <div class="mb-3">
+        <label for="appWorkingDir" class="form-label">Working Directory</label>
+        <input
+          type="text"
+          class="form-control monospace"
+          id="appWorkingDir"
+          aria-describedby="appWorkingDirHelp"
+          v-model="editForm['working-dir']"
+        />
+        <div id="appWorkingDirHelp" class="form-text">
+          The working directory that should be passed to the process.
+          For example, some applications use the working directory to search for configuration files.
+          If not set, Sunshine will default to the parent directory of the command
+        </div>
+      </div>
       <!--buttons-->
       <div class="d-flex">
         <button @click="showEditForm = false" class="btn btn-secondary m-2">
diff --git a/assets/web/header-no-nav.html b/assets/web/header-no-nav.html
index 4aefc9e8..e9448b96 100644
--- a/assets/web/header-no-nav.html
+++ b/assets/web/header-no-nav.html
@@ -5,18 +5,9 @@
     <meta http-equiv="X-UA-Compatible" content="IE=edge" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>Sunshine</title>
-    <link
-      href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0/dist/css/bootstrap.min.css"
-      rel="stylesheet"
-      integrity="sha384-wEmeIV1mKuiNpC+IOBjI7aAzPcEZeedi5yW5f2yOq55WWLwNGmvvx4Um1vskeMj0"
-      crossorigin="anonymous"
-    />
-    <script
-      src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0/dist/js/bootstrap.bundle.min.js"
-      integrity="sha384-p34f1UUtsS3wqzfto5wAAmdvj+osOnFyQFpp4Ua3gs/ZVWx6oOypYoCJhGGScy+8"
-      crossorigin="anonymous"
-    ></script>
-    <script src="https://cdn.jsdelivr.net/npm/vue@2.6.12/dist/vue.js"></script>
+    <link href="/third_party/bootstrap.min.css" rel="stylesheet" />
+    <script src="/third_party/bootstrap.bundle.min.js"></script>
+    <script src="/third_party/vue.js"></script>
   </head>
 
   <body></body>
diff --git a/assets/web/header.html b/assets/web/header.html
index 0bbcc34c..fba95031 100644
--- a/assets/web/header.html
+++ b/assets/web/header.html
@@ -5,18 +5,9 @@
     <meta http-equiv="X-UA-Compatible" content="IE=edge" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>Sunshine</title>
-    <link
-      href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0/dist/css/bootstrap.min.css"
-      rel="stylesheet"
-      integrity="sha384-wEmeIV1mKuiNpC+IOBjI7aAzPcEZeedi5yW5f2yOq55WWLwNGmvvx4Um1vskeMj0"
-      crossorigin="anonymous"
-    />
-    <script
-      src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0/dist/js/bootstrap.bundle.min.js"
-      integrity="sha384-p34f1UUtsS3wqzfto5wAAmdvj+osOnFyQFpp4Ua3gs/ZVWx6oOypYoCJhGGScy+8"
-      crossorigin="anonymous"
-    ></script>
-    <script src="https://cdn.jsdelivr.net/npm/vue@2.6.12/dist/vue.js"></script>
+    <link href="/third_party/bootstrap.min.css" rel="stylesheet" />
+    <script src="/third_party/bootstrap.bundle.min.js"></script>
+    <script src="/third_party/vue.js"></script>
   </head>
 
   <body>
diff --git a/assets/web/third_party/bootstrap.bundle.min.js b/assets/web/third_party/bootstrap.bundle.min.js
new file mode 100644
index 00000000..7a59950b
--- /dev/null
+++ b/assets/web/third_party/bootstrap.bundle.min.js
@@ -0,0 +1,7 @@
+/*!
+  * Bootstrap v5.0.0 (https://getbootstrap.com/)
+  * Copyright 2011-2021 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
+  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
+  */
+!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):(t="undefined"!=typeof globalThis?globalThis:t||self).bootstrap=e()}(this,(function(){"use strict";const t=t=>{do{t+=Math.floor(1e6*Math.random())}while(document.getElementById(t));return t},e=t=>{let e=t.getAttribute("data-bs-target");if(!e||"#"===e){let i=t.getAttribute("href");if(!i||!i.includes("#")&&!i.startsWith("."))return null;i.includes("#")&&!i.startsWith("#")&&(i="#"+i.split("#")[1]),e=i&&"#"!==i?i.trim():null}return e},i=t=>{const i=e(t);return i&&document.querySelector(i)?i:null},n=t=>{const i=e(t);return i?document.querySelector(i):null},s=t=>{if(!t)return 0;let{transitionDuration:e,transitionDelay:i}=window.getComputedStyle(t);const n=Number.parseFloat(e),s=Number.parseFloat(i);return n||s?(e=e.split(",")[0],i=i.split(",")[0],1e3*(Number.parseFloat(e)+Number.parseFloat(i))):0},o=t=>{t.dispatchEvent(new Event("transitionend"))},r=t=>(t[0]||t).nodeType,a=(t,e)=>{let i=!1;const n=e+5;t.addEventListener("transitionend",(function e(){i=!0,t.removeEventListener("transitionend",e)})),setTimeout(()=>{i||o(t)},n)},l=(t,e,i)=>{Object.keys(i).forEach(n=>{const s=i[n],o=e[n],a=o&&r(o)?"element":null==(l=o)?""+l:{}.toString.call(l).match(/\s([a-z]+)/i)[1].toLowerCase();var l;if(!new RegExp(s).test(a))throw new TypeError(`${t.toUpperCase()}: Option "${n}" provided type "${a}" but expected type "${s}".`)})},c=t=>{if(!t)return!1;if(t.style&&t.parentNode&&t.parentNode.style){const e=getComputedStyle(t),i=getComputedStyle(t.parentNode);return"none"!==e.display&&"none"!==i.display&&"hidden"!==e.visibility}return!1},d=t=>!t||t.nodeType!==Node.ELEMENT_NODE||!!t.classList.contains("disabled")||(void 0!==t.disabled?t.disabled:t.hasAttribute("disabled")&&"false"!==t.getAttribute("disabled")),h=t=>{if(!document.documentElement.attachShadow)return null;if("function"==typeof t.getRootNode){const e=t.getRootNode();return e instanceof ShadowRoot?e:null}return t instanceof ShadowRoot?t:t.parentNode?h(t.parentNode):null},u=()=>{},f=t=>t.offsetHeight,p=()=>{const{jQuery:t}=window;return t&&!document.body.hasAttribute("data-bs-no-jquery")?t:null},g=()=>"rtl"===document.documentElement.dir,m=(t,e)=>{var i;i=()=>{const i=p();if(i){const n=i.fn[t];i.fn[t]=e.jQueryInterface,i.fn[t].Constructor=e,i.fn[t].noConflict=()=>(i.fn[t]=n,e.jQueryInterface)}},"loading"===document.readyState?document.addEventListener("DOMContentLoaded",i):i()},_=t=>{"function"==typeof t&&t()},b=new Map;var v={set(t,e,i){b.has(t)||b.set(t,new Map);const n=b.get(t);n.has(e)||0===n.size?n.set(e,i):console.error(`Bootstrap doesn't allow more than one instance per element. 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DATA_KEY(){return"bs.carousel"}next(){this._isSliding||this._slide(K)}nextWhenVisible(){!document.hidden&&c(this._element)&&this.next()}prev(){this._isSliding||this._slide(Y)}pause(t){t||(this._isPaused=!0),U.findOne(".carousel-item-next, .carousel-item-prev",this._element)&&(o(this._element),this.cycle(!0)),clearInterval(this._interval),this._interval=null}cycle(t){t||(this._isPaused=!1),this._interval&&(clearInterval(this._interval),this._interval=null),this._config&&this._config.interval&&!this._isPaused&&(this._updateInterval(),this._interval=setInterval((document.visibilityState?this.nextWhenVisible:this.next).bind(this),this._config.interval))}to(t){this._activeElement=U.findOne(".active.carousel-item",this._element);const e=this._getItemIndex(this._activeElement);if(t>this._items.length-1||t<0)return;if(this._isSliding)return void I.one(this._element,"slid.bs.carousel",()=>this.to(t));if(e===t)return this.pause(),void this.cycle();const i=t>e?K:Y;this._slide(i,this._items[t])}dispose(){this._items=null,this._config=null,this._interval=null,this._isPaused=null,this._isSliding=null,this._activeElement=null,this._indicatorsElement=null,super.dispose()}_getConfig(t){return t={...$,...t},l("carousel",t,F),t}_handleSwipe(){const t=Math.abs(this.touchDeltaX);if(t<=40)return;const e=t/this.touchDeltaX;this.touchDeltaX=0,e&&this._slide(e>0?V:q)}_addEventListeners(){this._config.keyboard&&I.on(this._element,"keydown.bs.carousel",t=>this._keydown(t)),"hover"===this._config.pause&&(I.on(this._element,"mouseenter.bs.carousel",t=>this.pause(t)),I.on(this._element,"mouseleave.bs.carousel",t=>this.cycle(t))),this._config.touch&&this._touchSupported&&this._addTouchEventListeners()}_addTouchEventListeners(){const t=t=>{!this._pointerEvent||"pen"!==t.pointerType&&"touch"!==t.pointerType?this._pointerEvent||(this.touchStartX=t.touches[0].clientX):this.touchStartX=t.clientX},e=t=>{this.touchDeltaX=t.touches&&t.touches.length>1?0:t.touches[0].clientX-this.touchStartX},i=t=>{!this._pointerEvent||"pen"!==t.pointerType&&"touch"!==t.pointerType||(this.touchDeltaX=t.clientX-this.touchStartX),this._handleSwipe(),"hover"===this._config.pause&&(this.pause(),this.touchTimeout&&clearTimeout(this.touchTimeout),this.touchTimeout=setTimeout(t=>this.cycle(t),500+this._config.interval))};U.find(".carousel-item img",this._element).forEach(t=>{I.on(t,"dragstart.bs.carousel",t=>t.preventDefault())}),this._pointerEvent?(I.on(this._element,"pointerdown.bs.carousel",e=>t(e)),I.on(this._element,"pointerup.bs.carousel",t=>i(t)),this._element.classList.add("pointer-event")):(I.on(this._element,"touchstart.bs.carousel",e=>t(e)),I.on(this._element,"touchmove.bs.carousel",t=>e(t)),I.on(this._element,"touchend.bs.carousel",t=>i(t)))}_keydown(t){/input|textarea/i.test(t.target.tagName)||("ArrowLeft"===t.key?(t.preventDefault(),this._slide(V)):"ArrowRight"===t.key&&(t.preventDefault(),this._slide(q)))}_getItemIndex(t){return this._items=t&&t.parentNode?U.find(".carousel-item",t.parentNode):[],this._items.indexOf(t)}_getItemByOrder(t,e){const i=t===K,n=t===Y,s=this._getItemIndex(e),o=this._items.length-1;if((n&&0===s||i&&s===o)&&!this._config.wrap)return e;const r=(s+(n?-1:1))%this._items.length;return-1===r?this._items[this._items.length-1]:this._items[r]}_triggerSlideEvent(t,e){const i=this._getItemIndex(t),n=this._getItemIndex(U.findOne(".active.carousel-item",this._element));return I.trigger(this._element,"slide.bs.carousel",{relatedTarget:t,direction:e,from:n,to:i})}_setActiveIndicatorElement(t){if(this._indicatorsElement){const e=U.findOne(".active",this._indicatorsElement);e.classList.remove("active"),e.removeAttribute("aria-current");const i=U.find("[data-bs-target]",this._indicatorsElement);for(let e=0;e<i.length;e++)if(Number.parseInt(i[e].getAttribute("data-bs-slide-to"),10)===this._getItemIndex(t)){i[e].classList.add("active"),i[e].setAttribute("aria-current","true");break}}}_updateInterval(){const t=this._activeElement||U.findOne(".active.carousel-item",this._element);if(!t)return;const e=Number.parseInt(t.getAttribute("data-bs-interval"),10);e?(this._config.defaultInterval=this._config.defaultInterval||this._config.interval,this._config.interval=e):this._config.interval=this._config.defaultInterval||this._config.interval}_slide(t,e){const i=this._directionToOrder(t),n=U.findOne(".active.carousel-item",this._element),o=this._getItemIndex(n),r=e||this._getItemByOrder(i,n),l=this._getItemIndex(r),c=Boolean(this._interval),d=i===K,h=d?"carousel-item-start":"carousel-item-end",u=d?"carousel-item-next":"carousel-item-prev",p=this._orderToDirection(i);if(r&&r.classList.contains("active"))this._isSliding=!1;else if(!this._triggerSlideEvent(r,p).defaultPrevented&&n&&r){if(this._isSliding=!0,c&&this.pause(),this._setActiveIndicatorElement(r),this._activeElement=r,this._element.classList.contains("slide")){r.classList.add(u),f(r),n.classList.add(h),r.classList.add(h);const t=s(n);I.one(n,"transitionend",()=>{r.classList.remove(h,u),r.classList.add("active"),n.classList.remove("active",u,h),this._isSliding=!1,setTimeout(()=>{I.trigger(this._element,"slid.bs.carousel",{relatedTarget:r,direction:p,from:o,to:l})},0)}),a(n,t)}else n.classList.remove("active"),r.classList.add("active"),this._isSliding=!1,I.trigger(this._element,"slid.bs.carousel",{relatedTarget:r,direction:p,from:o,to:l});c&&this.cycle()}}_directionToOrder(t){return[V,q].includes(t)?g()?t===q?Y:K:t===q?K:Y:t}_orderToDirection(t){return[K,Y].includes(t)?g()?t===Y?q:V:t===Y?V:q:t}static carouselInterface(t,e){let i=v.get(t,"bs.carousel"),n={...$,...z.getDataAttributes(t)};"object"==typeof e&&(n={...n,...e});const s="string"==typeof e?e:n.slide;if(i||(i=new X(t,n)),"number"==typeof e)i.to(e);else if("string"==typeof s){if(void 0===i[s])throw new TypeError(`No method named "${s}"`);i[s]()}else n.interval&&n.ride&&(i.pause(),i.cycle())}static jQueryInterface(t){return this.each((function(){X.carouselInterface(this,t)}))}static dataApiClickHandler(t){const e=n(this);if(!e||!e.classList.contains("carousel"))return;const i={...z.getDataAttributes(e),...z.getDataAttributes(this)},s=this.getAttribute("data-bs-slide-to");s&&(i.interval=!1),X.carouselInterface(e,i),s&&v.get(e,"bs.carousel").to(s),t.preventDefault()}}I.on(document,"click.bs.carousel.data-api","[data-bs-slide], [data-bs-slide-to]",X.dataApiClickHandler),I.on(window,"load.bs.carousel.data-api",()=>{const t=U.find('[data-bs-ride="carousel"]');for(let e=0,i=t.length;e<i;e++)X.carouselInterface(t[e],v.get(t[e],"bs.carousel"))}),m("carousel",X);const Q={toggle:!0,parent:""},G={toggle:"boolean",parent:"(string|element)"};class Z extends M{constructor(t,e){super(t),this._isTransitioning=!1,this._config=this._getConfig(e),this._triggerArray=U.find(`[data-bs-toggle="collapse"][href="#${this._element.id}"],[data-bs-toggle="collapse"][data-bs-target="#${this._element.id}"]`);const n=U.find('[data-bs-toggle="collapse"]');for(let t=0,e=n.length;t<e;t++){const e=n[t],s=i(e),o=U.find(s).filter(t=>t===this._element);null!==s&&o.length&&(this._selector=s,this._triggerArray.push(e))}this._parent=this._config.parent?this._getParent():null,this._config.parent||this._addAriaAndCollapsedClass(this._element,this._triggerArray),this._config.toggle&&this.toggle()}static get Default(){return Q}static get DATA_KEY(){return"bs.collapse"}toggle(){this._element.classList.contains("show")?this.hide():this.show()}show(){if(this._isTransitioning||this._element.classList.contains("show"))return;let t,e;this._parent&&(t=U.find(".show, .collapsing",this._parent).filter(t=>"string"==typeof this._config.parent?t.getAttribute("data-bs-parent")===this._config.parent:t.classList.contains("collapse")),0===t.length&&(t=null));const i=U.findOne(this._selector);if(t){const n=t.find(t=>i!==t);if(e=n?v.get(n,"bs.collapse"):null,e&&e._isTransitioning)return}if(I.trigger(this._element,"show.bs.collapse").defaultPrevented)return;t&&t.forEach(t=>{i!==t&&Z.collapseInterface(t,"hide"),e||v.set(t,"bs.collapse",null)});const n=this._getDimension();this._element.classList.remove("collapse"),this._element.classList.add("collapsing"),this._element.style[n]=0,this._triggerArray.length&&this._triggerArray.forEach(t=>{t.classList.remove("collapsed"),t.setAttribute("aria-expanded",!0)}),this.setTransitioning(!0);const o="scroll"+(n[0].toUpperCase()+n.slice(1)),r=s(this._element);I.one(this._element,"transitionend",()=>{this._element.classList.remove("collapsing"),this._element.classList.add("collapse","show"),this._element.style[n]="",this.setTransitioning(!1),I.trigger(this._element,"shown.bs.collapse")}),a(this._element,r),this._element.style[n]=this._element[o]+"px"}hide(){if(this._isTransitioning||!this._element.classList.contains("show"))return;if(I.trigger(this._element,"hide.bs.collapse").defaultPrevented)return;const t=this._getDimension();this._element.style[t]=this._element.getBoundingClientRect()[t]+"px",f(this._element),this._element.classList.add("collapsing"),this._element.classList.remove("collapse","show");const e=this._triggerArray.length;if(e>0)for(let t=0;t<e;t++){const e=this._triggerArray[t],i=n(e);i&&!i.classList.contains("show")&&(e.classList.add("collapsed"),e.setAttribute("aria-expanded",!1))}this.setTransitioning(!0),this._element.style[t]="";const i=s(this._element);I.one(this._element,"transitionend",()=>{this.setTransitioning(!1),this._element.classList.remove("collapsing"),this._element.classList.add("collapse"),I.trigger(this._element,"hidden.bs.collapse")}),a(this._element,i)}setTransitioning(t){this._isTransitioning=t}dispose(){super.dispose(),this._config=null,this._parent=null,this._triggerArray=null,this._isTransitioning=null}_getConfig(t){return(t={...Q,...t}).toggle=Boolean(t.toggle),l("collapse",t,G),t}_getDimension(){return this._element.classList.contains("width")?"width":"height"}_getParent(){let{parent:t}=this._config;r(t)?void 0===t.jquery&&void 0===t[0]||(t=t[0]):t=U.findOne(t);const e=`[data-bs-toggle="collapse"][data-bs-parent="${t}"]`;return U.find(e,t).forEach(t=>{const e=n(t);this._addAriaAndCollapsedClass(e,[t])}),t}_addAriaAndCollapsedClass(t,e){if(!t||!e.length)return;const i=t.classList.contains("show");e.forEach(t=>{i?t.classList.remove("collapsed"):t.classList.add("collapsed"),t.setAttribute("aria-expanded",i)})}static collapseInterface(t,e){let i=v.get(t,"bs.collapse");const n={...Q,...z.getDataAttributes(t),..."object"==typeof e&&e?e:{}};if(!i&&n.toggle&&"string"==typeof e&&/show|hide/.test(e)&&(n.toggle=!1),i||(i=new Z(t,n)),"string"==typeof e){if(void 0===i[e])throw new TypeError(`No method named "${e}"`);i[e]()}}static jQueryInterface(t){return this.each((function(){Z.collapseInterface(this,t)}))}}I.on(document,"click.bs.collapse.data-api",'[data-bs-toggle="collapse"]',(function(t){("A"===t.target.tagName||t.delegateTarget&&"A"===t.delegateTarget.tagName)&&t.preventDefault();const e=z.getDataAttributes(this),n=i(this);U.find(n).forEach(t=>{const i=v.get(t,"bs.collapse");let n;i?(null===i._parent&&"string"==typeof e.parent&&(i._config.parent=e.parent,i._parent=i._getParent()),n="toggle"):n=e,Z.collapseInterface(t,n)})})),m("collapse",Z);var J="top",tt="bottom",et="right",it="left",nt=[J,tt,et,it],st=nt.reduce((function(t,e){return t.concat([e+"-start",e+"-end"])}),[]),ot=[].concat(nt,["auto"]).reduce((function(t,e){return t.concat([e,e+"-start",e+"-end"])}),[]),rt=["beforeRead","read","afterRead","beforeMain","main","afterMain","beforeWrite","write","afterWrite"];function at(t){return t?(t.nodeName||"").toLowerCase():null}function lt(t){if(null==t)return window;if("[object Window]"!==t.toString()){var e=t.ownerDocument;return e&&e.defaultView||window}return t}function ct(t){return t instanceof lt(t).Element||t instanceof Element}function dt(t){return t instanceof lt(t).HTMLElement||t instanceof HTMLElement}function ht(t){return"undefined"!=typeof ShadowRoot&&(t instanceof lt(t).ShadowRoot||t instanceof ShadowRoot)}var ut={name:"applyStyles",enabled:!0,phase:"write",fn:function(t){var e=t.state;Object.keys(e.elements).forEach((function(t){var 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f[t]-f[e]}))}var Qt={name:"flip",enabled:!0,phase:"main",fn:function(t){var e=t.state,i=t.options,n=t.name;if(!e.modifiersData[n]._skip){for(var s=i.mainAxis,o=void 0===s||s,r=i.altAxis,a=void 0===r||r,l=i.fallbackPlacements,c=i.padding,d=i.boundary,h=i.rootBoundary,u=i.altBoundary,f=i.flipVariations,p=void 0===f||f,g=i.allowedAutoPlacements,m=e.options.placement,_=ft(m),b=l||(_!==m&&p?function(t){if("auto"===ft(t))return[];var e=Ht(t);return[Bt(t),e,Bt(e)]}(m):[Ht(m)]),v=[m].concat(b).reduce((function(t,i){return t.concat("auto"===ft(i)?Xt(e,{placement:i,boundary:d,rootBoundary:h,padding:c,flipVariations:p,allowedAutoPlacements:g}):i)}),[]),y=e.rects.reference,w=e.rects.popper,E=new Map,T=!0,A=v[0],L=0;L<v.length;L++){var O=v[L],k=ft(O),D="start"===Yt(O),x=[J,tt].indexOf(k)>=0,C=x?"width":"height",S=Vt(e,{placement:O,boundary:d,rootBoundary:h,altBoundary:u,padding:c}),N=x?D?et:it:D?tt:J;y[C]>w[C]&&(N=Ht(N));var j=Ht(N),P=[];if(o&&P.push(S[k]<=0),a&&P.push(S[N]<=0,S[j]<=0),P.every((function(t){return t}))){A=O,T=!1;break}E.set(O,P)}if(T)for(var I=function(t){var e=v.find((function(e){var i=E.get(e);if(i)return i.slice(0,t).every((function(t){return t}))}));if(e)return A=e,"break"},M=p?3:1;M>0&&"break"!==I(M);M--);e.placement!==A&&(e.modifiersData[n]._skip=!0,e.placement=A,e.reset=!0)}},requiresIfExists:["offset"],data:{_skip:!1}};function Gt(t,e,i){return void 0===i&&(i={x:0,y:0}),{top:t.top-e.height-i.y,right:t.right-e.width+i.x,bottom:t.bottom-e.height+i.y,left:t.left-e.width-i.x}}function Zt(t){return[J,et,tt,it].some((function(e){return t[e]>=0}))}var Jt={name:"hide",enabled:!0,phase:"main",requiresIfExists:["preventOverflow"],fn:function(t){var e=t.state,i=t.name,n=e.rects.reference,s=e.rects.popper,o=e.modifiersData.preventOverflow,r=Vt(e,{elementContext:"reference"}),a=Vt(e,{altBoundary:!0}),l=Gt(r,n),c=Gt(a,s,o),d=Zt(l),h=Zt(c);e.modifiersData[i]={referenceClippingOffsets:l,popperEscapeOffsets:c,isReferenceHidden:d,hasPopperEscaped:h},e.attributes.popper=Object.assign({},e.attributes.popper,{"data-popper-reference-hidden":d,"data-popper-escaped":h})}},te={name:"offset",enabled:!0,phase:"main",requires:["popperOffsets"],fn:function(t){var e=t.state,i=t.options,n=t.name,s=i.offset,o=void 0===s?[0,0]:s,r=ot.reduce((function(t,i){return t[i]=function(t,e,i){var n=ft(t),s=[it,J].indexOf(n)>=0?-1:1,o="function"==typeof i?i(Object.assign({},e,{placement:t})):i,r=o[0],a=o[1];return 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n,s,o=vt(e),r=pt(t),a=dt(e),l={scrollLeft:0,scrollTop:0},c={x:0,y:0};return(a||!a&&!i)&&(("body"!==at(e)||Ut(o))&&(l=(n=e)!==lt(n)&&dt(n)?{scrollLeft:(s=n).scrollLeft,scrollTop:s.scrollTop}:Wt(n)),dt(e)?((c=pt(e)).x+=e.clientLeft,c.y+=e.clientTop):o&&(c.x=zt(o))),{x:r.left+l.scrollLeft-c.x,y:r.top+l.scrollTop-c.y,width:r.width,height:r.height}}var se={placement:"bottom",modifiers:[],strategy:"absolute"};function oe(){for(var t=arguments.length,e=new Array(t),i=0;i<t;i++)e[i]=arguments[i];return!e.some((function(t){return!(t&&"function"==typeof t.getBoundingClientRect)}))}function re(t){void 0===t&&(t={});var e=t,i=e.defaultModifiers,n=void 0===i?[]:i,s=e.defaultOptions,o=void 0===s?se:s;return function(t,e,i){void 0===i&&(i=o);var s,r,a={placement:"bottom",orderedModifiers:[],options:Object.assign({},se,o),modifiersData:{},elements:{reference:t,popper:e},attributes:{},styles:{}},l=[],c=!1,d={state:a,setOptions:function(i){h(),a.options=Object.assign({},o,a.options,i),a.scrollParents={reference:ct(t)?$t(t):t.contextElement?$t(t.contextElement):[],popper:$t(e)};var s,r,c=function(t){var e=function(t){var e=new Map,i=new Set,n=[];return t.forEach((function(t){e.set(t.name,t)})),t.forEach((function(t){i.has(t.name)||function t(s){i.add(s.name),[].concat(s.requires||[],s.requiresIfExists||[]).forEach((function(n){if(!i.has(n)){var s=e.get(n);s&&t(s)}})),n.push(s)}(t)})),n}(t);return rt.reduce((function(t,i){return t.concat(e.filter((function(t){return t.phase===i})))}),[])}((s=[].concat(n,a.options.modifiers),r=s.reduce((function(t,e){var i=t[e.name];return 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ae=re(),le=re({defaultModifiers:[It,ee,jt,ut]}),ce=re({defaultModifiers:[It,ee,jt,ut,te,Qt,ie,Ct,Jt]}),de=Object.freeze({__proto__:null,popperGenerator:re,detectOverflow:Vt,createPopperBase:ae,createPopper:ce,createPopperLite:le,top:J,bottom:tt,right:et,left:it,auto:"auto",basePlacements:nt,start:"start",end:"end",clippingParents:"clippingParents",viewport:"viewport",popper:"popper",reference:"reference",variationPlacements:st,placements:ot,beforeRead:"beforeRead",read:"read",afterRead:"afterRead",beforeMain:"beforeMain",main:"main",afterMain:"afterMain",beforeWrite:"beforeWrite",write:"write",afterWrite:"afterWrite",modifierPhases:rt,applyStyles:ut,arrow:Ct,computeStyles:jt,eventListeners:It,flip:Qt,hide:Jt,offset:te,popperOffsets:ee,preventOverflow:ie});const he=new RegExp("ArrowUp|ArrowDown|Escape"),ue=g()?"top-end":"top-start",fe=g()?"top-start":"top-end",pe=g()?"bottom-end":"bottom-start",ge=g()?"bottom-start":"bottom-end",me=g()?"left-start":"right-start",_e=g()?"right-start":"left-start",be={offset:[0,2],boundary:"clippingParents",reference:"toggle",display:"dynamic",popperConfig:null,autoClose:!0},ve={offset:"(array|string|function)",boundary:"(string|element)",reference:"(string|element|object)",display:"string",popperConfig:"(null|object|function)",autoClose:"(boolean|string)"};class ye extends M{constructor(t,e){super(t),this._popper=null,this._config=this._getConfig(e),this._menu=this._getMenuElement(),this._inNavbar=this._detectNavbar(),this._addEventListeners()}static get Default(){return be}static get DefaultType(){return ve}static get DATA_KEY(){return"bs.dropdown"}toggle(){d(this._element)||(this._element.classList.contains("show")?this.hide():this.show())}show(){if(d(this._element)||this._menu.classList.contains("show"))return;const t=ye.getParentFromElement(this._element),e={relatedTarget:this._element};if(!I.trigger(this._element,"show.bs.dropdown",e).defaultPrevented){if(this._inNavbar)z.setDataAttribute(this._menu,"popper","none");else{if(void 0===de)throw new TypeError("Bootstrap's dropdowns require Popper (https://popper.js.org)");let e=this._element;"parent"===this._config.reference?e=t:r(this._config.reference)?(e=this._config.reference,void 0!==this._config.reference.jquery&&(e=this._config.reference[0])):"object"==typeof this._config.reference&&(e=this._config.reference);const i=this._getPopperConfig(),n=i.modifiers.find(t=>"applyStyles"===t.name&&!1===t.enabled);this._popper=ce(e,this._menu,i),n&&z.setDataAttribute(this._menu,"popper","static")}"ontouchstart"in document.documentElement&&!t.closest(".navbar-nav")&&[].concat(...document.body.children).forEach(t=>I.on(t,"mouseover",u)),this._element.focus(),this._element.setAttribute("aria-expanded",!0),this._menu.classList.toggle("show"),this._element.classList.toggle("show"),I.trigger(this._element,"shown.bs.dropdown",e)}}hide(){if(d(this._element)||!this._menu.classList.contains("show"))return;const t={relatedTarget:this._element};this._completeHide(t)}dispose(){this._menu=null,this._popper&&(this._popper.destroy(),this._popper=null),super.dispose()}update(){this._inNavbar=this._detectNavbar(),this._popper&&this._popper.update()}_addEventListeners(){I.on(this._element,"click.bs.dropdown",t=>{t.preventDefault(),this.toggle()})}_completeHide(t){I.trigger(this._element,"hide.bs.dropdown",t).defaultPrevented||("ontouchstart"in document.documentElement&&[].concat(...document.body.children).forEach(t=>I.off(t,"mouseover",u)),this._popper&&this._popper.destroy(),this._menu.classList.remove("show"),this._element.classList.remove("show"),this._element.setAttribute("aria-expanded","false"),z.removeDataAttribute(this._menu,"popper"),I.trigger(this._element,"hidden.bs.dropdown",t))}_getConfig(t){if(t={...this.constructor.Default,...z.getDataAttributes(this._element),...t},l("dropdown",t,this.constructor.DefaultType),"object"==typeof t.reference&&!r(t.reference)&&"function"!=typeof t.reference.getBoundingClientRect)throw new TypeError("dropdown".toUpperCase()+': Option "reference" provided type "object" without a required "getBoundingClientRect" method.');return t}_getMenuElement(){return U.next(this._element,".dropdown-menu")[0]}_getPlacement(){const t=this._element.parentNode;if(t.classList.contains("dropend"))return me;if(t.classList.contains("dropstart"))return _e;const e="end"===getComputedStyle(this._menu).getPropertyValue("--bs-position").trim();return t.classList.contains("dropup")?e?fe:ue:e?ge:pe}_detectNavbar(){return null!==this._element.closest(".navbar")}_getOffset(){const{offset:t}=this._config;return"string"==typeof t?t.split(",").map(t=>Number.parseInt(t,10)):"function"==typeof t?e=>t(e,this._element):t}_getPopperConfig(){const t={placement:this._getPlacement(),modifiers:[{name:"preventOverflow",options:{boundary:this._config.boundary}},{name:"offset",options:{offset:this._getOffset()}}]};return"static"===this._config.display&&(t.modifiers=[{name:"applyStyles",enabled:!1}]),{...t,..."function"==typeof this._config.popperConfig?this._config.popperConfig(t):this._config.popperConfig}}_selectMenuItem(t){const e=U.find(".dropdown-menu .dropdown-item:not(.disabled):not(:disabled)",this._menu).filter(c);if(!e.length)return;let i=e.indexOf(t.target);"ArrowUp"===t.key&&i>0&&i--,"ArrowDown"===t.key&&i<e.length-1&&i++,i=-1===i?0:i,e[i].focus()}static dropdownInterface(t,e){let i=v.get(t,"bs.dropdown");if(i||(i=new ye(t,"object"==typeof e?e:null)),"string"==typeof e){if(void 0===i[e])throw new TypeError(`No method named "${e}"`);i[e]()}}static jQueryInterface(t){return this.each((function(){ye.dropdownInterface(this,t)}))}static clearMenus(t){if(t){if(2===t.button||"keyup"===t.type&&"Tab"!==t.key)return;if(/input|select|option|textarea|form/i.test(t.target.tagName))return}const e=U.find('[data-bs-toggle="dropdown"]');for(let i=0,n=e.length;i<n;i++){const n=v.get(e[i],"bs.dropdown");if(!n||!1===n._config.autoClose)continue;if(!n._element.classList.contains("show"))continue;const s={relatedTarget:n._element};if(t){const e=t.composedPath(),i=e.includes(n._menu);if(e.includes(n._element)||"inside"===n._config.autoClose&&!i||"outside"===n._config.autoClose&&i)continue;if("keyup"===t.type&&"Tab"===t.key&&n._menu.contains(t.target))continue;"click"===t.type&&(s.clickEvent=t)}n._completeHide(s)}}static getParentFromElement(t){return n(t)||t.parentNode}static dataApiKeydownHandler(t){if(/input|textarea/i.test(t.target.tagName)?"Space"===t.key||"Escape"!==t.key&&("ArrowDown"!==t.key&&"ArrowUp"!==t.key||t.target.closest(".dropdown-menu")):!he.test(t.key))return;const e=this.classList.contains("show");if(!e&&"Escape"===t.key)return;if(t.preventDefault(),t.stopPropagation(),d(this))return;const i=()=>this.matches('[data-bs-toggle="dropdown"]')?this:U.prev(this,'[data-bs-toggle="dropdown"]')[0];if("Escape"===t.key)return i().focus(),void ye.clearMenus();e||"ArrowUp"!==t.key&&"ArrowDown"!==t.key?e&&"Space"!==t.key?ye.getInstance(i())._selectMenuItem(t):ye.clearMenus():i().click()}}I.on(document,"keydown.bs.dropdown.data-api",'[data-bs-toggle="dropdown"]',ye.dataApiKeydownHandler),I.on(document,"keydown.bs.dropdown.data-api",".dropdown-menu",ye.dataApiKeydownHandler),I.on(document,"click.bs.dropdown.data-api",ye.clearMenus),I.on(document,"keyup.bs.dropdown.data-api",ye.clearMenus),I.on(document,"click.bs.dropdown.data-api",'[data-bs-toggle="dropdown"]',(function(t){t.preventDefault(),ye.dropdownInterface(this)})),m("dropdown",ye);const we=()=>{const t=document.documentElement.clientWidth;return Math.abs(window.innerWidth-t)},Ee=(t=we())=>{Te(),Ae("body","paddingRight",e=>e+t),Ae(".fixed-top, .fixed-bottom, .is-fixed, .sticky-top","paddingRight",e=>e+t),Ae(".sticky-top","marginRight",e=>e-t)},Te=()=>{const t=document.body.style.overflow;t&&z.setDataAttribute(document.body,"overflow",t),document.body.style.overflow="hidden"},Ae=(t,e,i)=>{const n=we();U.find(t).forEach(t=>{if(t!==document.body&&window.innerWidth>t.clientWidth+n)return;const s=t.style[e],o=window.getComputedStyle(t)[e];z.setDataAttribute(t,e,s),t.style[e]=i(Number.parseFloat(o))+"px"})},Le=()=>{Oe("body","overflow"),Oe("body","paddingRight"),Oe(".fixed-top, .fixed-bottom, .is-fixed, .sticky-top","paddingRight"),Oe(".sticky-top","marginRight")},Oe=(t,e)=>{U.find(t).forEach(t=>{const i=z.getDataAttribute(t,e);void 0===i?t.style.removeProperty(e):(z.removeDataAttribute(t,e),t.style[e]=i)})},ke={isVisible:!0,isAnimated:!1,rootElement:document.body,clickCallback:null},De={isVisible:"boolean",isAnimated:"boolean",rootElement:"element",clickCallback:"(function|null)"};class xe{constructor(t){this._config=this._getConfig(t),this._isAppended=!1,this._element=null}show(t){this._config.isVisible?(this._append(),this._config.isAnimated&&f(this._getElement()),this._getElement().classList.add("show"),this._emulateAnimation(()=>{_(t)})):_(t)}hide(t){this._config.isVisible?(this._getElement().classList.remove("show"),this._emulateAnimation(()=>{this.dispose(),_(t)})):_(t)}_getElement(){if(!this._element){const t=document.createElement("div");t.className="modal-backdrop",this._config.isAnimated&&t.classList.add("fade"),this._element=t}return this._element}_getConfig(t){return t={...ke,..."object"==typeof t?t:{}},l("backdrop",t,De),t}_append(){this._isAppended||(this._config.rootElement.appendChild(this._getElement()),I.on(this._getElement(),"mousedown.bs.backdrop",()=>{_(this._config.clickCallback)}),this._isAppended=!0)}dispose(){this._isAppended&&(I.off(this._element,"mousedown.bs.backdrop"),this._getElement().parentNode.removeChild(this._element),this._isAppended=!1)}_emulateAnimation(t){if(!this._config.isAnimated)return void _(t);const e=s(this._getElement());I.one(this._getElement(),"transitionend",()=>_(t)),a(this._getElement(),e)}}const Ce={backdrop:!0,keyboard:!0,focus:!0},Se={backdrop:"(boolean|string)",keyboard:"boolean",focus:"boolean"};class Ne extends M{constructor(t,e){super(t),this._config=this._getConfig(e),this._dialog=U.findOne(".modal-dialog",this._element),this._backdrop=this._initializeBackDrop(),this._isShown=!1,this._ignoreBackdropClick=!1,this._isTransitioning=!1}static get Default(){return Ce}static get DATA_KEY(){return"bs.modal"}toggle(t){return this._isShown?this.hide():this.show(t)}show(t){if(this._isShown||this._isTransitioning)return;this._isAnimated()&&(this._isTransitioning=!0);const e=I.trigger(this._element,"show.bs.modal",{relatedTarget:t});this._isShown||e.defaultPrevented||(this._isShown=!0,Ee(),document.body.classList.add("modal-open"),this._adjustDialog(),this._setEscapeEvent(),this._setResizeEvent(),I.on(this._element,"click.dismiss.bs.modal",'[data-bs-dismiss="modal"]',t=>this.hide(t)),I.on(this._dialog,"mousedown.dismiss.bs.modal",()=>{I.one(this._element,"mouseup.dismiss.bs.modal",t=>{t.target===this._element&&(this._ignoreBackdropClick=!0)})}),this._showBackdrop(()=>this._showElement(t)))}hide(t){if(t&&t.preventDefault(),!this._isShown||this._isTransitioning)return;if(I.trigger(this._element,"hide.bs.modal").defaultPrevented)return;this._isShown=!1;const e=this._isAnimated();if(e&&(this._isTransitioning=!0),this._setEscapeEvent(),this._setResizeEvent(),I.off(document,"focusin.bs.modal"),this._element.classList.remove("show"),I.off(this._element,"click.dismiss.bs.modal"),I.off(this._dialog,"mousedown.dismiss.bs.modal"),e){const t=s(this._element);I.one(this._element,"transitionend",t=>this._hideModal(t)),a(this._element,t)}else this._hideModal()}dispose(){[window,this._dialog].forEach(t=>I.off(t,".bs.modal")),super.dispose(),I.off(document,"focusin.bs.modal"),this._config=null,this._dialog=null,this._backdrop.dispose(),this._backdrop=null,this._isShown=null,this._ignoreBackdropClick=null,this._isTransitioning=null}handleUpdate(){this._adjustDialog()}_initializeBackDrop(){return new xe({isVisible:Boolean(this._config.backdrop),isAnimated:this._isAnimated()})}_getConfig(t){return t={...Ce,...z.getDataAttributes(this._element),...t},l("modal",t,Se),t}_showElement(t){const e=this._isAnimated(),i=U.findOne(".modal-body",this._dialog);this._element.parentNode&&this._element.parentNode.nodeType===Node.ELEMENT_NODE||document.body.appendChild(this._element),this._element.style.display="block",this._element.removeAttribute("aria-hidden"),this._element.setAttribute("aria-modal",!0),this._element.setAttribute("role","dialog"),this._element.scrollTop=0,i&&(i.scrollTop=0),e&&f(this._element),this._element.classList.add("show"),this._config.focus&&this._enforceFocus();const n=()=>{this._config.focus&&this._element.focus(),this._isTransitioning=!1,I.trigger(this._element,"shown.bs.modal",{relatedTarget:t})};if(e){const t=s(this._dialog);I.one(this._dialog,"transitionend",n),a(this._dialog,t)}else n()}_enforceFocus(){I.off(document,"focusin.bs.modal"),I.on(document,"focusin.bs.modal",t=>{document===t.target||this._element===t.target||this._element.contains(t.target)||this._element.focus()})}_setEscapeEvent(){this._isShown?I.on(this._element,"keydown.dismiss.bs.modal",t=>{this._config.keyboard&&"Escape"===t.key?(t.preventDefault(),this.hide()):this._config.keyboard||"Escape"!==t.key||this._triggerBackdropTransition()}):I.off(this._element,"keydown.dismiss.bs.modal")}_setResizeEvent(){this._isShown?I.on(window,"resize.bs.modal",()=>this._adjustDialog()):I.off(window,"resize.bs.modal")}_hideModal(){this._element.style.display="none",this._element.setAttribute("aria-hidden",!0),this._element.removeAttribute("aria-modal"),this._element.removeAttribute("role"),this._isTransitioning=!1,this._backdrop.hide(()=>{document.body.classList.remove("modal-open"),this._resetAdjustments(),Le(),I.trigger(this._element,"hidden.bs.modal")})}_showBackdrop(t){I.on(this._element,"click.dismiss.bs.modal",t=>{this._ignoreBackdropClick?this._ignoreBackdropClick=!1:t.target===t.currentTarget&&(!0===this._config.backdrop?this.hide():"static"===this._config.backdrop&&this._triggerBackdropTransition())}),this._backdrop.show(t)}_isAnimated(){return this._element.classList.contains("fade")}_triggerBackdropTransition(){if(I.trigger(this._element,"hidePrevented.bs.modal").defaultPrevented)return;const t=this._element.scrollHeight>document.documentElement.clientHeight;t||(this._element.style.overflowY="hidden"),this._element.classList.add("modal-static");const e=s(this._dialog);I.off(this._element,"transitionend"),I.one(this._element,"transitionend",()=>{this._element.classList.remove("modal-static"),t||(I.one(this._element,"transitionend",()=>{this._element.style.overflowY=""}),a(this._element,e))}),a(this._element,e),this._element.focus()}_adjustDialog(){const t=this._element.scrollHeight>document.documentElement.clientHeight,e=we(),i=e>0;(!i&&t&&!g()||i&&!t&&g())&&(this._element.style.paddingLeft=e+"px"),(i&&!t&&!g()||!i&&t&&g())&&(this._element.style.paddingRight=e+"px")}_resetAdjustments(){this._element.style.paddingLeft="",this._element.style.paddingRight=""}static jQueryInterface(t,e){return this.each((function(){const i=Ne.getInstance(this)||new Ne(this,"object"==typeof t?t:{});if("string"==typeof t){if(void 0===i[t])throw new TypeError(`No method named "${t}"`);i[t](e)}}))}}I.on(document,"click.bs.modal.data-api",'[data-bs-toggle="modal"]',(function(t){const e=n(this);["A","AREA"].includes(this.tagName)&&t.preventDefault(),I.one(e,"show.bs.modal",t=>{t.defaultPrevented||I.one(e,"hidden.bs.modal",()=>{c(this)&&this.focus()})}),(Ne.getInstance(e)||new Ne(e)).toggle(this)})),m("modal",Ne);const je={backdrop:!0,keyboard:!0,scroll:!1},Pe={backdrop:"boolean",keyboard:"boolean",scroll:"boolean"};class Ie extends M{constructor(t,e){super(t),this._config=this._getConfig(e),this._isShown=!1,this._backdrop=this._initializeBackDrop(),this._addEventListeners()}static get Default(){return je}static get DATA_KEY(){return"bs.offcanvas"}toggle(t){return this._isShown?this.hide():this.show(t)}show(t){if(this._isShown)return;if(I.trigger(this._element,"show.bs.offcanvas",{relatedTarget:t}).defaultPrevented)return;this._isShown=!0,this._element.style.visibility="visible",this._backdrop.show(),this._config.scroll||(Ee(),this._enforceFocusOnElement(this._element)),this._element.removeAttribute("aria-hidden"),this._element.setAttribute("aria-modal",!0),this._element.setAttribute("role","dialog"),this._element.classList.add("show");const e=s(this._element);I.one(this._element,"transitionend",()=>{I.trigger(this._element,"shown.bs.offcanvas",{relatedTarget:t})}),a(this._element,e)}hide(){if(!this._isShown)return;if(I.trigger(this._element,"hide.bs.offcanvas").defaultPrevented)return;I.off(document,"focusin.bs.offcanvas"),this._element.blur(),this._isShown=!1,this._element.classList.remove("show"),this._backdrop.hide();const t=s(this._element);I.one(this._element,"transitionend",()=>{this._element.setAttribute("aria-hidden",!0),this._element.removeAttribute("aria-modal"),this._element.removeAttribute("role"),this._element.style.visibility="hidden",this._config.scroll||Le(),I.trigger(this._element,"hidden.bs.offcanvas")}),a(this._element,t)}dispose(){this._backdrop.dispose(),super.dispose(),I.off(document,"focusin.bs.offcanvas"),this._config=null,this._backdrop=null}_getConfig(t){return t={...je,...z.getDataAttributes(this._element),..."object"==typeof t?t:{}},l("offcanvas",t,Pe),t}_initializeBackDrop(){return new xe({isVisible:this._config.backdrop,isAnimated:!0,rootElement:this._element.parentNode,clickCallback:()=>this.hide()})}_enforceFocusOnElement(t){I.off(document,"focusin.bs.offcanvas"),I.on(document,"focusin.bs.offcanvas",e=>{document===e.target||t===e.target||t.contains(e.target)||t.focus()}),t.focus()}_addEventListeners(){I.on(this._element,"click.dismiss.bs.offcanvas",'[data-bs-dismiss="offcanvas"]',()=>this.hide()),I.on(this._element,"keydown.dismiss.bs.offcanvas",t=>{this._config.keyboard&&"Escape"===t.key&&this.hide()})}static jQueryInterface(t){return this.each((function(){const e=v.get(this,"bs.offcanvas")||new Ie(this,"object"==typeof t?t:{});if("string"==typeof t){if(void 0===e[t]||t.startsWith("_")||"constructor"===t)throw new TypeError(`No method named "${t}"`);e[t](this)}}))}}I.on(document,"click.bs.offcanvas.data-api",'[data-bs-toggle="offcanvas"]',(function(t){const e=n(this);if(["A","AREA"].includes(this.tagName)&&t.preventDefault(),d(this))return;I.one(e,"hidden.bs.offcanvas",()=>{c(this)&&this.focus()});const i=U.findOne(".offcanvas.show");i&&i!==e&&Ie.getInstance(i).hide(),(v.get(e,"bs.offcanvas")||new Ie(e)).toggle(this)})),I.on(window,"load.bs.offcanvas.data-api",()=>{U.find(".offcanvas.show").forEach(t=>(v.get(t,"bs.offcanvas")||new Ie(t)).show())}),m("offcanvas",Ie);const Me=new Set(["background","cite","href","itemtype","longdesc","poster","src","xlink:href"]),He=/^(?:(?:https?|mailto|ftp|tel|file):|[^#&/:?]*(?:[#/?]|$))/i,Re=/^data:(?:image\/(?:bmp|gif|jpeg|jpg|png|tiff|webp)|video\/(?:mpeg|mp4|ogg|webm)|audio\/(?:mp3|oga|ogg|opus));base64,[\d+/a-z]+=*$/i,Be=(t,e)=>{const i=t.nodeName.toLowerCase();if(e.includes(i))return!Me.has(i)||Boolean(He.test(t.nodeValue)||Re.test(t.nodeValue));const n=e.filter(t=>t instanceof RegExp);for(let t=0,e=n.length;t<e;t++)if(n[t].test(i))return!0;return!1};function We(t,e,i){if(!t.length)return t;if(i&&"function"==typeof i)return i(t);const n=(new window.DOMParser).parseFromString(t,"text/html"),s=Object.keys(e),o=[].concat(...n.body.querySelectorAll("*"));for(let t=0,i=o.length;t<i;t++){const i=o[t],n=i.nodeName.toLowerCase();if(!s.includes(n)){i.parentNode.removeChild(i);continue}const r=[].concat(...i.attributes),a=[].concat(e["*"]||[],e[n]||[]);r.forEach(t=>{Be(t,a)||i.removeAttribute(t.nodeName)})}return n.body.innerHTML}const ze=new RegExp("(^|\\s)bs-tooltip\\S+","g"),Ue=new Set(["sanitize","allowList","sanitizeFn"]),$e={animation:"boolean",template:"string",title:"(string|element|function)",trigger:"string",delay:"(number|object)",html:"boolean",selector:"(string|boolean)",placement:"(string|function)",offset:"(array|string|function)",container:"(string|element|boolean)",fallbackPlacements:"array",boundary:"(string|element)",customClass:"(string|function)",sanitize:"boolean",sanitizeFn:"(null|function)",allowList:"object",popperConfig:"(null|object|function)"},Fe={AUTO:"auto",TOP:"top",RIGHT:g()?"left":"right",BOTTOM:"bottom",LEFT:g()?"right":"left"},Ke={animation:!0,template:'<div class="tooltip" role="tooltip"><div class="tooltip-arrow"></div><div class="tooltip-inner"></div></div>',trigger:"hover focus",title:"",delay:0,html:!1,selector:!1,placement:"top",offset:[0,0],container:!1,fallbackPlacements:["top","right","bottom","left"],boundary:"clippingParents",customClass:"",sanitize:!0,sanitizeFn:null,allowList:{"*":["class","dir","id","lang","role",/^aria-[\w-]*$/i],a:["target","href","title","rel"],area:[],b:[],br:[],col:[],code:[],div:[],em:[],hr:[],h1:[],h2:[],h3:[],h4:[],h5:[],h6:[],i:[],img:["src","srcset","alt","title","width","height"],li:[],ol:[],p:[],pre:[],s:[],small:[],span:[],sub:[],sup:[],strong:[],u:[],ul:[]},popperConfig:null},Ye={HIDE:"hide.bs.tooltip",HIDDEN:"hidden.bs.tooltip",SHOW:"show.bs.tooltip",SHOWN:"shown.bs.tooltip",INSERTED:"inserted.bs.tooltip",CLICK:"click.bs.tooltip",FOCUSIN:"focusin.bs.tooltip",FOCUSOUT:"focusout.bs.tooltip",MOUSEENTER:"mouseenter.bs.tooltip",MOUSELEAVE:"mouseleave.bs.tooltip"};class qe extends M{constructor(t,e){if(void 0===de)throw new TypeError("Bootstrap's tooltips require Popper (https://popper.js.org)");super(t),this._isEnabled=!0,this._timeout=0,this._hoverState="",this._activeTrigger={},this._popper=null,this.config=this._getConfig(e),this.tip=null,this._setListeners()}static get Default(){return Ke}static get NAME(){return"tooltip"}static get DATA_KEY(){return"bs.tooltip"}static get Event(){return Ye}static get EVENT_KEY(){return".bs.tooltip"}static get DefaultType(){return $e}enable(){this._isEnabled=!0}disable(){this._isEnabled=!1}toggleEnabled(){this._isEnabled=!this._isEnabled}toggle(t){if(this._isEnabled)if(t){const e=this._initializeOnDelegatedTarget(t);e._activeTrigger.click=!e._activeTrigger.click,e._isWithActiveTrigger()?e._enter(null,e):e._leave(null,e)}else{if(this.getTipElement().classList.contains("show"))return void this._leave(null,this);this._enter(null,this)}}dispose(){clearTimeout(this._timeout),I.off(this._element.closest(".modal"),"hide.bs.modal",this._hideModalHandler),this.tip&&this.tip.parentNode&&this.tip.parentNode.removeChild(this.tip),this._isEnabled=null,this._timeout=null,this._hoverState=null,this._activeTrigger=null,this._popper&&this._popper.destroy(),this._popper=null,this.config=null,this.tip=null,super.dispose()}show(){if("none"===this._element.style.display)throw new Error("Please use show on visible elements");if(!this.isWithContent()||!this._isEnabled)return;const e=I.trigger(this._element,this.constructor.Event.SHOW),i=h(this._element),n=null===i?this._element.ownerDocument.documentElement.contains(this._element):i.contains(this._element);if(e.defaultPrevented||!n)return;const o=this.getTipElement(),r=t(this.constructor.NAME);o.setAttribute("id",r),this._element.setAttribute("aria-describedby",r),this.setContent(),this.config.animation&&o.classList.add("fade");const l="function"==typeof this.config.placement?this.config.placement.call(this,o,this._element):this.config.placement,c=this._getAttachment(l);this._addAttachmentClass(c);const d=this._getContainer();v.set(o,this.constructor.DATA_KEY,this),this._element.ownerDocument.documentElement.contains(this.tip)||(d.appendChild(o),I.trigger(this._element,this.constructor.Event.INSERTED)),this._popper?this._popper.update():this._popper=ce(this._element,o,this._getPopperConfig(c)),o.classList.add("show");const f="function"==typeof this.config.customClass?this.config.customClass():this.config.customClass;f&&o.classList.add(...f.split(" ")),"ontouchstart"in document.documentElement&&[].concat(...document.body.children).forEach(t=>{I.on(t,"mouseover",u)});const p=()=>{const t=this._hoverState;this._hoverState=null,I.trigger(this._element,this.constructor.Event.SHOWN),"out"===t&&this._leave(null,this)};if(this.tip.classList.contains("fade")){const t=s(this.tip);I.one(this.tip,"transitionend",p),a(this.tip,t)}else p()}hide(){if(!this._popper)return;const t=this.getTipElement(),e=()=>{this._isWithActiveTrigger()||("show"!==this._hoverState&&t.parentNode&&t.parentNode.removeChild(t),this._cleanTipClass(),this._element.removeAttribute("aria-describedby"),I.trigger(this._element,this.constructor.Event.HIDDEN),this._popper&&(this._popper.destroy(),this._popper=null))};if(!I.trigger(this._element,this.constructor.Event.HIDE).defaultPrevented){if(t.classList.remove("show"),"ontouchstart"in document.documentElement&&[].concat(...document.body.children).forEach(t=>I.off(t,"mouseover",u)),this._activeTrigger.click=!1,this._activeTrigger.focus=!1,this._activeTrigger.hover=!1,this.tip.classList.contains("fade")){const i=s(t);I.one(t,"transitionend",e),a(t,i)}else e();this._hoverState=""}}update(){null!==this._popper&&this._popper.update()}isWithContent(){return Boolean(this.getTitle())}getTipElement(){if(this.tip)return this.tip;const t=document.createElement("div");return t.innerHTML=this.config.template,this.tip=t.children[0],this.tip}setContent(){const t=this.getTipElement();this.setElementContent(U.findOne(".tooltip-inner",t),this.getTitle()),t.classList.remove("fade","show")}setElementContent(t,e){if(null!==t)return"object"==typeof e&&r(e)?(e.jquery&&(e=e[0]),void(this.config.html?e.parentNode!==t&&(t.innerHTML="",t.appendChild(e)):t.textContent=e.textContent)):void(this.config.html?(this.config.sanitize&&(e=We(e,this.config.allowList,this.config.sanitizeFn)),t.innerHTML=e):t.textContent=e)}getTitle(){let t=this._element.getAttribute("data-bs-original-title");return t||(t="function"==typeof this.config.title?this.config.title.call(this._element):this.config.title),t}updateAttachment(t){return"right"===t?"end":"left"===t?"start":t}_initializeOnDelegatedTarget(t,e){const i=this.constructor.DATA_KEY;return(e=e||v.get(t.delegateTarget,i))||(e=new 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t()}hide(){if(!this._element.classList.contains("show"))return;if(I.trigger(this._element,"hide.bs.toast").defaultPrevented)return;const t=()=>{this._element.classList.add("hide"),I.trigger(this._element,"hidden.bs.toast")};if(this._element.classList.remove("show"),this._config.animation){const e=s(this._element);I.one(this._element,"transitionend",t),a(this._element,e)}else t()}dispose(){this._clearTimeout(),this._element.classList.contains("show")&&this._element.classList.remove("show"),super.dispose(),this._config=null}_getConfig(t){return t={...si,...z.getDataAttributes(this._element),..."object"==typeof t&&t?t:{}},l("toast",t,this.constructor.DefaultType),t}_setListeners(){I.on(this._element,"click.dismiss.bs.toast",'[data-bs-dismiss="toast"]',()=>this.hide())}_clearTimeout(){clearTimeout(this._timeout),this._timeout=null}static jQueryInterface(t){return this.each((function(){let e=v.get(this,"bs.toast");if(e||(e=new oi(this,"object"==typeof t&&t)),"string"==typeof t){if(void 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\ No newline at end of file
diff --git a/assets/web/third_party/bootstrap.min.css b/assets/web/third_party/bootstrap.min.css
new file mode 100644
index 00000000..08ef66a2
--- /dev/null
+++ b/assets/web/third_party/bootstrap.min.css
@@ -0,0 +1,7 @@
+@charset "UTF-8";/*!
+ * Bootstrap v5.0.0 (https://getbootstrap.com/)
+ * Copyright 2011-2021 The Bootstrap Authors
+ * Copyright 2011-2021 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
+ */:root{--bs-blue:#0d6efd;--bs-indigo:#6610f2;--bs-purple:#6f42c1;--bs-pink:#d63384;--bs-red:#dc3545;--bs-orange:#fd7e14;--bs-yellow:#ffc107;--bs-green:#198754;--bs-teal:#20c997;--bs-cyan:#0dcaf0;--bs-white:#fff;--bs-gray:#6c757d;--bs-gray-dark:#343a40;--bs-primary:#0d6efd;--bs-secondary:#6c757d;--bs-success:#198754;--bs-info:#0dcaf0;--bs-warning:#ffc107;--bs-danger:#dc3545;--bs-light:#f8f9fa;--bs-dark:#212529;--bs-font-sans-serif:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";--bs-font-monospace:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;--bs-gradient:linear-gradient(180deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0))}*,::after,::before{box-sizing:border-box}@media 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!important}.py-xl-0{padding-top:0!important;padding-bottom:0!important}.py-xl-1{padding-top:.25rem!important;padding-bottom:.25rem!important}.py-xl-2{padding-top:.5rem!important;padding-bottom:.5rem!important}.py-xl-3{padding-top:1rem!important;padding-bottom:1rem!important}.py-xl-4{padding-top:1.5rem!important;padding-bottom:1.5rem!important}.py-xl-5{padding-top:3rem!important;padding-bottom:3rem!important}.pt-xl-0{padding-top:0!important}.pt-xl-1{padding-top:.25rem!important}.pt-xl-2{padding-top:.5rem!important}.pt-xl-3{padding-top:1rem!important}.pt-xl-4{padding-top:1.5rem!important}.pt-xl-5{padding-top:3rem!important}.pe-xl-0{padding-right:0!important}.pe-xl-1{padding-right:.25rem!important}.pe-xl-2{padding-right:.5rem!important}.pe-xl-3{padding-right:1rem!important}.pe-xl-4{padding-right:1.5rem!important}.pe-xl-5{padding-right:3rem!important}.pb-xl-0{padding-bottom:0!important}.pb-xl-1{padding-bottom:.25rem!important}.pb-xl-2{padding-bottom:.5rem!important}.pb-xl-3{padding-bottom:1rem!important}.pb-xl-4{padding-bottom:1.5rem!important}.pb-xl-5{padding-bottom:3rem!important}.ps-xl-0{padding-left:0!important}.ps-xl-1{padding-left:.25rem!important}.ps-xl-2{padding-left:.5rem!important}.ps-xl-3{padding-left:1rem!important}.ps-xl-4{padding-left:1.5rem!important}.ps-xl-5{padding-left:3rem!important}.text-xl-start{text-align:left!important}.text-xl-end{text-align:right!important}.text-xl-center{text-align:center!important}}@media (min-width:1400px){.float-xxl-start{float:left!important}.float-xxl-end{float:right!important}.float-xxl-none{float:none!important}.d-xxl-inline{display:inline!important}.d-xxl-inline-block{display:inline-block!important}.d-xxl-block{display:block!important}.d-xxl-grid{display:grid!important}.d-xxl-table{display:table!important}.d-xxl-table-row{display:table-row!important}.d-xxl-table-cell{display:table-cell!important}.d-xxl-flex{display:flex!important}.d-xxl-inline-flex{display:inline-flex!important}.d-xxl-none{display:none!important}.flex-xxl-fill{flex:1 1 auto!important}.flex-xxl-row{flex-direction:row!important}.flex-xxl-column{flex-direction:column!important}.flex-xxl-row-reverse{flex-direction:row-reverse!important}.flex-xxl-column-reverse{flex-direction:column-reverse!important}.flex-xxl-grow-0{flex-grow:0!important}.flex-xxl-grow-1{flex-grow:1!important}.flex-xxl-shrink-0{flex-shrink:0!important}.flex-xxl-shrink-1{flex-shrink:1!important}.flex-xxl-wrap{flex-wrap:wrap!important}.flex-xxl-nowrap{flex-wrap:nowrap!important}.flex-xxl-wrap-reverse{flex-wrap:wrap-reverse!important}.gap-xxl-0{gap:0!important}.gap-xxl-1{gap:.25rem!important}.gap-xxl-2{gap:.5rem!important}.gap-xxl-3{gap:1rem!important}.gap-xxl-4{gap:1.5rem!important}.gap-xxl-5{gap:3rem!important}.justify-content-xxl-start{justify-content:flex-start!important}.justify-content-xxl-end{justify-content:flex-end!important}.justify-content-xxl-center{justify-content:center!important}.justify-content-xxl-between{justify-content:space-between!important}.justify-content-xxl-around{justify-content:space-around!important}.justify-content-xxl-evenly{justify-content:space-evenly!important}.align-items-xxl-start{align-items:flex-start!important}.align-items-xxl-end{align-items:flex-end!important}.align-items-xxl-center{align-items:center!important}.align-items-xxl-baseline{align-items:baseline!important}.align-items-xxl-stretch{align-items:stretch!important}.align-content-xxl-start{align-content:flex-start!important}.align-content-xxl-end{align-content:flex-end!important}.align-content-xxl-center{align-content:center!important}.align-content-xxl-between{align-content:space-between!important}.align-content-xxl-around{align-content:space-around!important}.align-content-xxl-stretch{align-content:stretch!important}.align-self-xxl-auto{align-self:auto!important}.align-self-xxl-start{align-self:flex-start!important}.align-self-xxl-end{align-self:flex-end!important}.align-self-xxl-center{align-self:center!important}.align-self-xxl-baseline{align-self:baseline!important}.align-self-xxl-stretch{align-self:stretch!important}.order-xxl-first{order:-1!important}.order-xxl-0{order:0!important}.order-xxl-1{order:1!important}.order-xxl-2{order:2!important}.order-xxl-3{order:3!important}.order-xxl-4{order:4!important}.order-xxl-5{order:5!important}.order-xxl-last{order:6!important}.m-xxl-0{margin:0!important}.m-xxl-1{margin:.25rem!important}.m-xxl-2{margin:.5rem!important}.m-xxl-3{margin:1rem!important}.m-xxl-4{margin:1.5rem!important}.m-xxl-5{margin:3rem!important}.m-xxl-auto{margin:auto!important}.mx-xxl-0{margin-right:0!important;margin-left:0!important}.mx-xxl-1{margin-right:.25rem!important;margin-left:.25rem!important}.mx-xxl-2{margin-right:.5rem!important;margin-left:.5rem!important}.mx-xxl-3{margin-right:1rem!important;margin-left:1rem!important}.mx-xxl-4{margin-right:1.5rem!important;margin-left:1.5rem!important}.mx-xxl-5{margin-right:3rem!important;margin-left:3rem!important}.mx-xxl-auto{margin-right:auto!important;margin-left:auto!important}.my-xxl-0{margin-top:0!important;margin-bottom:0!important}.my-xxl-1{margin-top:.25rem!important;margin-bottom:.25rem!important}.my-xxl-2{margin-top:.5rem!important;margin-bottom:.5rem!important}.my-xxl-3{margin-top:1rem!important;margin-bottom:1rem!important}.my-xxl-4{margin-top:1.5rem!important;margin-bottom:1.5rem!important}.my-xxl-5{margin-top:3rem!important;margin-bottom:3rem!important}.my-xxl-auto{margin-top:auto!important;margin-bottom:auto!important}.mt-xxl-0{margin-top:0!important}.mt-xxl-1{margin-top:.25rem!important}.mt-xxl-2{margin-top:.5rem!important}.mt-xxl-3{margin-top:1rem!important}.mt-xxl-4{margin-top:1.5rem!important}.mt-xxl-5{margin-top:3rem!important}.mt-xxl-auto{margin-top:auto!important}.me-xxl-0{margin-right:0!important}.me-xxl-1{margin-right:.25rem!important}.me-xxl-2{margin-right:.5rem!important}.me-xxl-3{margin-right:1rem!important}.me-xxl-4{margin-right:1.5rem!important}.me-xxl-5{margin-right:3rem!important}.me-xxl-auto{margin-right:auto!important}.mb-xxl-0{margin-bottom:0!important}.mb-xxl-1{margin-bottom:.25rem!important}.mb-xxl-2{margin-bottom:.5rem!important}.mb-xxl-3{margin-bottom:1rem!important}.mb-xxl-4{margin-bottom:1.5rem!important}.mb-xxl-5{margin-bottom:3rem!important}.mb-xxl-auto{margin-bottom:auto!important}.ms-xxl-0{margin-left:0!important}.ms-xxl-1{margin-left:.25rem!important}.ms-xxl-2{margin-left:.5rem!important}.ms-xxl-3{margin-left:1rem!important}.ms-xxl-4{margin-left:1.5rem!important}.ms-xxl-5{margin-left:3rem!important}.ms-xxl-auto{margin-left:auto!important}.p-xxl-0{padding:0!important}.p-xxl-1{padding:.25rem!important}.p-xxl-2{padding:.5rem!important}.p-xxl-3{padding:1rem!important}.p-xxl-4{padding:1.5rem!important}.p-xxl-5{padding:3rem!important}.px-xxl-0{padding-right:0!important;padding-left:0!important}.px-xxl-1{padding-right:.25rem!important;padding-left:.25rem!important}.px-xxl-2{padding-right:.5rem!important;padding-left:.5rem!important}.px-xxl-3{padding-right:1rem!important;padding-left:1rem!important}.px-xxl-4{padding-right:1.5rem!important;padding-left:1.5rem!important}.px-xxl-5{padding-right:3rem!important;padding-left:3rem!important}.py-xxl-0{padding-top:0!important;padding-bottom:0!important}.py-xxl-1{padding-top:.25rem!important;padding-bottom:.25rem!important}.py-xxl-2{padding-top:.5rem!important;padding-bottom:.5rem!important}.py-xxl-3{padding-top:1rem!important;padding-bottom:1rem!important}.py-xxl-4{padding-top:1.5rem!important;padding-bottom:1.5rem!important}.py-xxl-5{padding-top:3rem!important;padding-bottom:3rem!important}.pt-xxl-0{padding-top:0!important}.pt-xxl-1{padding-top:.25rem!important}.pt-xxl-2{padding-top:.5rem!important}.pt-xxl-3{padding-top:1rem!important}.pt-xxl-4{padding-top:1.5rem!important}.pt-xxl-5{padding-top:3rem!important}.pe-xxl-0{padding-right:0!important}.pe-xxl-1{padding-right:.25rem!important}.pe-xxl-2{padding-right:.5rem!important}.pe-xxl-3{padding-right:1rem!important}.pe-xxl-4{padding-right:1.5rem!important}.pe-xxl-5{padding-right:3rem!important}.pb-xxl-0{padding-bottom:0!important}.pb-xxl-1{padding-bottom:.25rem!important}.pb-xxl-2{padding-bottom:.5rem!important}.pb-xxl-3{padding-bottom:1rem!important}.pb-xxl-4{padding-bottom:1.5rem!important}.pb-xxl-5{padding-bottom:3rem!important}.ps-xxl-0{padding-left:0!important}.ps-xxl-1{padding-left:.25rem!important}.ps-xxl-2{padding-left:.5rem!important}.ps-xxl-3{padding-left:1rem!important}.ps-xxl-4{padding-left:1.5rem!important}.ps-xxl-5{padding-left:3rem!important}.text-xxl-start{text-align:left!important}.text-xxl-end{text-align:right!important}.text-xxl-center{text-align:center!important}}@media (min-width:1200px){.fs-1{font-size:2.5rem!important}.fs-2{font-size:2rem!important}.fs-3{font-size:1.75rem!important}.fs-4{font-size:1.5rem!important}}@media print{.d-print-inline{display:inline!important}.d-print-inline-block{display:inline-block!important}.d-print-block{display:block!important}.d-print-grid{display:grid!important}.d-print-table{display:table!important}.d-print-table-row{display:table-row!important}.d-print-table-cell{display:table-cell!important}.d-print-flex{display:flex!important}.d-print-inline-flex{display:inline-flex!important}.d-print-none{display:none!important}}
+/*# sourceMappingURL=bootstrap.min.css.map */
\ No newline at end of file
diff --git a/assets/web/third_party/vue.js b/assets/web/third_party/vue.js
new file mode 100644
index 00000000..919aa125
--- /dev/null
+++ b/assets/web/third_party/vue.js
@@ -0,0 +1,11965 @@
+/*!
+ * Vue.js v2.6.12
+ * (c) 2014-2020 Evan You
+ * Released under the MIT License.
+ */
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+  typeof define === 'function' && define.amd ? define(factory) :
+  (global = global || self, global.Vue = factory());
+}(this, function () { 'use strict';
+
+  /*  */
+
+  var emptyObject = Object.freeze({});
+
+  // These helpers produce better VM code in JS engines due to their
+  // explicitness and function inlining.
+  function isUndef (v) {
+    return v === undefined || v === null
+  }
+
+  function isDef (v) {
+    return v !== undefined && v !== null
+  }
+
+  function isTrue (v) {
+    return v === true
+  }
+
+  function isFalse (v) {
+    return v === false
+  }
+
+  /**
+   * Check if value is primitive.
+   */
+  function isPrimitive (value) {
+    return (
+      typeof value === 'string' ||
+      typeof value === 'number' ||
+      // $flow-disable-line
+      typeof value === 'symbol' ||
+      typeof value === 'boolean'
+    )
+  }
+
+  /**
+   * Quick object check - this is primarily used to tell
+   * Objects from primitive values when we know the value
+   * is a JSON-compliant type.
+   */
+  function isObject (obj) {
+    return obj !== null && typeof obj === 'object'
+  }
+
+  /**
+   * Get the raw type string of a value, e.g., [object Object].
+   */
+  var _toString = Object.prototype.toString;
+
+  function toRawType (value) {
+    return _toString.call(value).slice(8, -1)
+  }
+
+  /**
+   * Strict object type check. Only returns true
+   * for plain JavaScript objects.
+   */
+  function isPlainObject (obj) {
+    return _toString.call(obj) === '[object Object]'
+  }
+
+  function isRegExp (v) {
+    return _toString.call(v) === '[object RegExp]'
+  }
+
+  /**
+   * Check if val is a valid array index.
+   */
+  function isValidArrayIndex (val) {
+    var n = parseFloat(String(val));
+    return n >= 0 && Math.floor(n) === n && isFinite(val)
+  }
+
+  function isPromise (val) {
+    return (
+      isDef(val) &&
+      typeof val.then === 'function' &&
+      typeof val.catch === 'function'
+    )
+  }
+
+  /**
+   * Convert a value to a string that is actually rendered.
+   */
+  function toString (val) {
+    return val == null
+      ? ''
+      : Array.isArray(val) || (isPlainObject(val) && val.toString === _toString)
+        ? JSON.stringify(val, null, 2)
+        : String(val)
+  }
+
+  /**
+   * Convert an input value to a number for persistence.
+   * If the conversion fails, return original string.
+   */
+  function toNumber (val) {
+    var n = parseFloat(val);
+    return isNaN(n) ? val : n
+  }
+
+  /**
+   * Make a map and return a function for checking if a key
+   * is in that map.
+   */
+  function makeMap (
+    str,
+    expectsLowerCase
+  ) {
+    var map = Object.create(null);
+    var list = str.split(',');
+    for (var i = 0; i < list.length; i++) {
+      map[list[i]] = true;
+    }
+    return expectsLowerCase
+      ? function (val) { return map[val.toLowerCase()]; }
+      : function (val) { return map[val]; }
+  }
+
+  /**
+   * Check if a tag is a built-in tag.
+   */
+  var isBuiltInTag = makeMap('slot,component', true);
+
+  /**
+   * Check if an attribute is a reserved attribute.
+   */
+  var isReservedAttribute = makeMap('key,ref,slot,slot-scope,is');
+
+  /**
+   * Remove an item from an array.
+   */
+  function remove (arr, item) {
+    if (arr.length) {
+      var index = arr.indexOf(item);
+      if (index > -1) {
+        return arr.splice(index, 1)
+      }
+    }
+  }
+
+  /**
+   * Check whether an object has the property.
+   */
+  var hasOwnProperty = Object.prototype.hasOwnProperty;
+  function hasOwn (obj, key) {
+    return hasOwnProperty.call(obj, key)
+  }
+
+  /**
+   * Create a cached version of a pure function.
+   */
+  function cached (fn) {
+    var cache = Object.create(null);
+    return (function cachedFn (str) {
+      var hit = cache[str];
+      return hit || (cache[str] = fn(str))
+    })
+  }
+
+  /**
+   * Camelize a hyphen-delimited string.
+   */
+  var camelizeRE = /-(\w)/g;
+  var camelize = cached(function (str) {
+    return str.replace(camelizeRE, function (_, c) { return c ? c.toUpperCase() : ''; })
+  });
+
+  /**
+   * Capitalize a string.
+   */
+  var capitalize = cached(function (str) {
+    return str.charAt(0).toUpperCase() + str.slice(1)
+  });
+
+  /**
+   * Hyphenate a camelCase string.
+   */
+  var hyphenateRE = /\B([A-Z])/g;
+  var hyphenate = cached(function (str) {
+    return str.replace(hyphenateRE, '-$1').toLowerCase()
+  });
+
+  /**
+   * Simple bind polyfill for environments that do not support it,
+   * e.g., PhantomJS 1.x. Technically, we don't need this anymore
+   * since native bind is now performant enough in most browsers.
+   * But removing it would mean breaking code that was able to run in
+   * PhantomJS 1.x, so this must be kept for backward compatibility.
+   */
+
+  /* istanbul ignore next */
+  function polyfillBind (fn, ctx) {
+    function boundFn (a) {
+      var l = arguments.length;
+      return l
+        ? l > 1
+          ? fn.apply(ctx, arguments)
+          : fn.call(ctx, a)
+        : fn.call(ctx)
+    }
+
+    boundFn._length = fn.length;
+    return boundFn
+  }
+
+  function nativeBind (fn, ctx) {
+    return fn.bind(ctx)
+  }
+
+  var bind = Function.prototype.bind
+    ? nativeBind
+    : polyfillBind;
+
+  /**
+   * Convert an Array-like object to a real Array.
+   */
+  function toArray (list, start) {
+    start = start || 0;
+    var i = list.length - start;
+    var ret = new Array(i);
+    while (i--) {
+      ret[i] = list[i + start];
+    }
+    return ret
+  }
+
+  /**
+   * Mix properties into target object.
+   */
+  function extend (to, _from) {
+    for (var key in _from) {
+      to[key] = _from[key];
+    }
+    return to
+  }
+
+  /**
+   * Merge an Array of Objects into a single Object.
+   */
+  function toObject (arr) {
+    var res = {};
+    for (var i = 0; i < arr.length; i++) {
+      if (arr[i]) {
+        extend(res, arr[i]);
+      }
+    }
+    return res
+  }
+
+  /* eslint-disable no-unused-vars */
+
+  /**
+   * Perform no operation.
+   * Stubbing args to make Flow happy without leaving useless transpiled code
+   * with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/).
+   */
+  function noop (a, b, c) {}
+
+  /**
+   * Always return false.
+   */
+  var no = function (a, b, c) { return false; };
+
+  /* eslint-enable no-unused-vars */
+
+  /**
+   * Return the same value.
+   */
+  var identity = function (_) { return _; };
+
+  /**
+   * Generate a string containing static keys from compiler modules.
+   */
+  function genStaticKeys (modules) {
+    return modules.reduce(function (keys, m) {
+      return keys.concat(m.staticKeys || [])
+    }, []).join(',')
+  }
+
+  /**
+   * Check if two values are loosely equal - that is,
+   * if they are plain objects, do they have the same shape?
+   */
+  function looseEqual (a, b) {
+    if (a === b) { return true }
+    var isObjectA = isObject(a);
+    var isObjectB = isObject(b);
+    if (isObjectA && isObjectB) {
+      try {
+        var isArrayA = Array.isArray(a);
+        var isArrayB = Array.isArray(b);
+        if (isArrayA && isArrayB) {
+          return a.length === b.length && a.every(function (e, i) {
+            return looseEqual(e, b[i])
+          })
+        } else if (a instanceof Date && b instanceof Date) {
+          return a.getTime() === b.getTime()
+        } else if (!isArrayA && !isArrayB) {
+          var keysA = Object.keys(a);
+          var keysB = Object.keys(b);
+          return keysA.length === keysB.length && keysA.every(function (key) {
+            return looseEqual(a[key], b[key])
+          })
+        } else {
+          /* istanbul ignore next */
+          return false
+        }
+      } catch (e) {
+        /* istanbul ignore next */
+        return false
+      }
+    } else if (!isObjectA && !isObjectB) {
+      return String(a) === String(b)
+    } else {
+      return false
+    }
+  }
+
+  /**
+   * Return the first index at which a loosely equal value can be
+   * found in the array (if value is a plain object, the array must
+   * contain an object of the same shape), or -1 if it is not present.
+   */
+  function looseIndexOf (arr, val) {
+    for (var i = 0; i < arr.length; i++) {
+      if (looseEqual(arr[i], val)) { return i }
+    }
+    return -1
+  }
+
+  /**
+   * Ensure a function is called only once.
+   */
+  function once (fn) {
+    var called = false;
+    return function () {
+      if (!called) {
+        called = true;
+        fn.apply(this, arguments);
+      }
+    }
+  }
+
+  var SSR_ATTR = 'data-server-rendered';
+
+  var ASSET_TYPES = [
+    'component',
+    'directive',
+    'filter'
+  ];
+
+  var LIFECYCLE_HOOKS = [
+    'beforeCreate',
+    'created',
+    'beforeMount',
+    'mounted',
+    'beforeUpdate',
+    'updated',
+    'beforeDestroy',
+    'destroyed',
+    'activated',
+    'deactivated',
+    'errorCaptured',
+    'serverPrefetch'
+  ];
+
+  /*  */
+
+
+
+  var config = ({
+    /**
+     * Option merge strategies (used in core/util/options)
+     */
+    // $flow-disable-line
+    optionMergeStrategies: Object.create(null),
+
+    /**
+     * Whether to suppress warnings.
+     */
+    silent: false,
+
+    /**
+     * Show production mode tip message on boot?
+     */
+    productionTip: "development" !== 'production',
+
+    /**
+     * Whether to enable devtools
+     */
+    devtools: "development" !== 'production',
+
+    /**
+     * Whether to record perf
+     */
+    performance: false,
+
+    /**
+     * Error handler for watcher errors
+     */
+    errorHandler: null,
+
+    /**
+     * Warn handler for watcher warns
+     */
+    warnHandler: null,
+
+    /**
+     * Ignore certain custom elements
+     */
+    ignoredElements: [],
+
+    /**
+     * Custom user key aliases for v-on
+     */
+    // $flow-disable-line
+    keyCodes: Object.create(null),
+
+    /**
+     * Check if a tag is reserved so that it cannot be registered as a
+     * component. This is platform-dependent and may be overwritten.
+     */
+    isReservedTag: no,
+
+    /**
+     * Check if an attribute is reserved so that it cannot be used as a component
+     * prop. This is platform-dependent and may be overwritten.
+     */
+    isReservedAttr: no,
+
+    /**
+     * Check if a tag is an unknown element.
+     * Platform-dependent.
+     */
+    isUnknownElement: no,
+
+    /**
+     * Get the namespace of an element
+     */
+    getTagNamespace: noop,
+
+    /**
+     * Parse the real tag name for the specific platform.
+     */
+    parsePlatformTagName: identity,
+
+    /**
+     * Check if an attribute must be bound using property, e.g. value
+     * Platform-dependent.
+     */
+    mustUseProp: no,
+
+    /**
+     * Perform updates asynchronously. Intended to be used by Vue Test Utils
+     * This will significantly reduce performance if set to false.
+     */
+    async: true,
+
+    /**
+     * Exposed for legacy reasons
+     */
+    _lifecycleHooks: LIFECYCLE_HOOKS
+  });
+
+  /*  */
+
+  /**
+   * unicode letters used for parsing html tags, component names and property paths.
+   * using https://www.w3.org/TR/html53/semantics-scripting.html#potentialcustomelementname
+   * skipping \u10000-\uEFFFF due to it freezing up PhantomJS
+   */
+  var unicodeRegExp = /a-zA-Z\u00B7\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u037D\u037F-\u1FFF\u200C-\u200D\u203F-\u2040\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD/;
+
+  /**
+   * Check if a string starts with $ or _
+   */
+  function isReserved (str) {
+    var c = (str + '').charCodeAt(0);
+    return c === 0x24 || c === 0x5F
+  }
+
+  /**
+   * Define a property.
+   */
+  function def (obj, key, val, enumerable) {
+    Object.defineProperty(obj, key, {
+      value: val,
+      enumerable: !!enumerable,
+      writable: true,
+      configurable: true
+    });
+  }
+
+  /**
+   * Parse simple path.
+   */
+  var bailRE = new RegExp(("[^" + (unicodeRegExp.source) + ".$_\\d]"));
+  function parsePath (path) {
+    if (bailRE.test(path)) {
+      return
+    }
+    var segments = path.split('.');
+    return function (obj) {
+      for (var i = 0; i < segments.length; i++) {
+        if (!obj) { return }
+        obj = obj[segments[i]];
+      }
+      return obj
+    }
+  }
+
+  /*  */
+
+  // can we use __proto__?
+  var hasProto = '__proto__' in {};
+
+  // Browser environment sniffing
+  var inBrowser = typeof window !== 'undefined';
+  var inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform;
+  var weexPlatform = inWeex && WXEnvironment.platform.toLowerCase();
+  var UA = inBrowser && window.navigator.userAgent.toLowerCase();
+  var isIE = UA && /msie|trident/.test(UA);
+  var isIE9 = UA && UA.indexOf('msie 9.0') > 0;
+  var isEdge = UA && UA.indexOf('edge/') > 0;
+  var isAndroid = (UA && UA.indexOf('android') > 0) || (weexPlatform === 'android');
+  var isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || (weexPlatform === 'ios');
+  var isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge;
+  var isPhantomJS = UA && /phantomjs/.test(UA);
+  var isFF = UA && UA.match(/firefox\/(\d+)/);
+
+  // Firefox has a "watch" function on Object.prototype...
+  var nativeWatch = ({}).watch;
+
+  var supportsPassive = false;
+  if (inBrowser) {
+    try {
+      var opts = {};
+      Object.defineProperty(opts, 'passive', ({
+        get: function get () {
+          /* istanbul ignore next */
+          supportsPassive = true;
+        }
+      })); // https://github.com/facebook/flow/issues/285
+      window.addEventListener('test-passive', null, opts);
+    } catch (e) {}
+  }
+
+  // this needs to be lazy-evaled because vue may be required before
+  // vue-server-renderer can set VUE_ENV
+  var _isServer;
+  var isServerRendering = function () {
+    if (_isServer === undefined) {
+      /* istanbul ignore if */
+      if (!inBrowser && !inWeex && typeof global !== 'undefined') {
+        // detect presence of vue-server-renderer and avoid
+        // Webpack shimming the process
+        _isServer = global['process'] && global['process'].env.VUE_ENV === 'server';
+      } else {
+        _isServer = false;
+      }
+    }
+    return _isServer
+  };
+
+  // detect devtools
+  var devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__;
+
+  /* istanbul ignore next */
+  function isNative (Ctor) {
+    return typeof Ctor === 'function' && /native code/.test(Ctor.toString())
+  }
+
+  var hasSymbol =
+    typeof Symbol !== 'undefined' && isNative(Symbol) &&
+    typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys);
+
+  var _Set;
+  /* istanbul ignore if */ // $flow-disable-line
+  if (typeof Set !== 'undefined' && isNative(Set)) {
+    // use native Set when available.
+    _Set = Set;
+  } else {
+    // a non-standard Set polyfill that only works with primitive keys.
+    _Set = /*@__PURE__*/(function () {
+      function Set () {
+        this.set = Object.create(null);
+      }
+      Set.prototype.has = function has (key) {
+        return this.set[key] === true
+      };
+      Set.prototype.add = function add (key) {
+        this.set[key] = true;
+      };
+      Set.prototype.clear = function clear () {
+        this.set = Object.create(null);
+      };
+
+      return Set;
+    }());
+  }
+
+  /*  */
+
+  var warn = noop;
+  var tip = noop;
+  var generateComponentTrace = (noop); // work around flow check
+  var formatComponentName = (noop);
+
+  {
+    var hasConsole = typeof console !== 'undefined';
+    var classifyRE = /(?:^|[-_])(\w)/g;
+    var classify = function (str) { return str
+      .replace(classifyRE, function (c) { return c.toUpperCase(); })
+      .replace(/[-_]/g, ''); };
+
+    warn = function (msg, vm) {
+      var trace = vm ? generateComponentTrace(vm) : '';
+
+      if (config.warnHandler) {
+        config.warnHandler.call(null, msg, vm, trace);
+      } else if (hasConsole && (!config.silent)) {
+        console.error(("[Vue warn]: " + msg + trace));
+      }
+    };
+
+    tip = function (msg, vm) {
+      if (hasConsole && (!config.silent)) {
+        console.warn("[Vue tip]: " + msg + (
+          vm ? generateComponentTrace(vm) : ''
+        ));
+      }
+    };
+
+    formatComponentName = function (vm, includeFile) {
+      if (vm.$root === vm) {
+        return '<Root>'
+      }
+      var options = typeof vm === 'function' && vm.cid != null
+        ? vm.options
+        : vm._isVue
+          ? vm.$options || vm.constructor.options
+          : vm;
+      var name = options.name || options._componentTag;
+      var file = options.__file;
+      if (!name && file) {
+        var match = file.match(/([^/\\]+)\.vue$/);
+        name = match && match[1];
+      }
+
+      return (
+        (name ? ("<" + (classify(name)) + ">") : "<Anonymous>") +
+        (file && includeFile !== false ? (" at " + file) : '')
+      )
+    };
+
+    var repeat = function (str, n) {
+      var res = '';
+      while (n) {
+        if (n % 2 === 1) { res += str; }
+        if (n > 1) { str += str; }
+        n >>= 1;
+      }
+      return res
+    };
+
+    generateComponentTrace = function (vm) {
+      if (vm._isVue && vm.$parent) {
+        var tree = [];
+        var currentRecursiveSequence = 0;
+        while (vm) {
+          if (tree.length > 0) {
+            var last = tree[tree.length - 1];
+            if (last.constructor === vm.constructor) {
+              currentRecursiveSequence++;
+              vm = vm.$parent;
+              continue
+            } else if (currentRecursiveSequence > 0) {
+              tree[tree.length - 1] = [last, currentRecursiveSequence];
+              currentRecursiveSequence = 0;
+            }
+          }
+          tree.push(vm);
+          vm = vm.$parent;
+        }
+        return '\n\nfound in\n\n' + tree
+          .map(function (vm, i) { return ("" + (i === 0 ? '---> ' : repeat(' ', 5 + i * 2)) + (Array.isArray(vm)
+              ? ((formatComponentName(vm[0])) + "... (" + (vm[1]) + " recursive calls)")
+              : formatComponentName(vm))); })
+          .join('\n')
+      } else {
+        return ("\n\n(found in " + (formatComponentName(vm)) + ")")
+      }
+    };
+  }
+
+  /*  */
+
+  var uid = 0;
+
+  /**
+   * A dep is an observable that can have multiple
+   * directives subscribing to it.
+   */
+  var Dep = function Dep () {
+    this.id = uid++;
+    this.subs = [];
+  };
+
+  Dep.prototype.addSub = function addSub (sub) {
+    this.subs.push(sub);
+  };
+
+  Dep.prototype.removeSub = function removeSub (sub) {
+    remove(this.subs, sub);
+  };
+
+  Dep.prototype.depend = function depend () {
+    if (Dep.target) {
+      Dep.target.addDep(this);
+    }
+  };
+
+  Dep.prototype.notify = function notify () {
+    // stabilize the subscriber list first
+    var subs = this.subs.slice();
+    if (!config.async) {
+      // subs aren't sorted in scheduler if not running async
+      // we need to sort them now to make sure they fire in correct
+      // order
+      subs.sort(function (a, b) { return a.id - b.id; });
+    }
+    for (var i = 0, l = subs.length; i < l; i++) {
+      subs[i].update();
+    }
+  };
+
+  // The current target watcher being evaluated.
+  // This is globally unique because only one watcher
+  // can be evaluated at a time.
+  Dep.target = null;
+  var targetStack = [];
+
+  function pushTarget (target) {
+    targetStack.push(target);
+    Dep.target = target;
+  }
+
+  function popTarget () {
+    targetStack.pop();
+    Dep.target = targetStack[targetStack.length - 1];
+  }
+
+  /*  */
+
+  var VNode = function VNode (
+    tag,
+    data,
+    children,
+    text,
+    elm,
+    context,
+    componentOptions,
+    asyncFactory
+  ) {
+    this.tag = tag;
+    this.data = data;
+    this.children = children;
+    this.text = text;
+    this.elm = elm;
+    this.ns = undefined;
+    this.context = context;
+    this.fnContext = undefined;
+    this.fnOptions = undefined;
+    this.fnScopeId = undefined;
+    this.key = data && data.key;
+    this.componentOptions = componentOptions;
+    this.componentInstance = undefined;
+    this.parent = undefined;
+    this.raw = false;
+    this.isStatic = false;
+    this.isRootInsert = true;
+    this.isComment = false;
+    this.isCloned = false;
+    this.isOnce = false;
+    this.asyncFactory = asyncFactory;
+    this.asyncMeta = undefined;
+    this.isAsyncPlaceholder = false;
+  };
+
+  var prototypeAccessors = { child: { configurable: true } };
+
+  // DEPRECATED: alias for componentInstance for backwards compat.
+  /* istanbul ignore next */
+  prototypeAccessors.child.get = function () {
+    return this.componentInstance
+  };
+
+  Object.defineProperties( VNode.prototype, prototypeAccessors );
+
+  var createEmptyVNode = function (text) {
+    if ( text === void 0 ) text = '';
+
+    var node = new VNode();
+    node.text = text;
+    node.isComment = true;
+    return node
+  };
+
+  function createTextVNode (val) {
+    return new VNode(undefined, undefined, undefined, String(val))
+  }
+
+  // optimized shallow clone
+  // used for static nodes and slot nodes because they may be reused across
+  // multiple renders, cloning them avoids errors when DOM manipulations rely
+  // on their elm reference.
+  function cloneVNode (vnode) {
+    var cloned = new VNode(
+      vnode.tag,
+      vnode.data,
+      // #7975
+      // clone children array to avoid mutating original in case of cloning
+      // a child.
+      vnode.children && vnode.children.slice(),
+      vnode.text,
+      vnode.elm,
+      vnode.context,
+      vnode.componentOptions,
+      vnode.asyncFactory
+    );
+    cloned.ns = vnode.ns;
+    cloned.isStatic = vnode.isStatic;
+    cloned.key = vnode.key;
+    cloned.isComment = vnode.isComment;
+    cloned.fnContext = vnode.fnContext;
+    cloned.fnOptions = vnode.fnOptions;
+    cloned.fnScopeId = vnode.fnScopeId;
+    cloned.asyncMeta = vnode.asyncMeta;
+    cloned.isCloned = true;
+    return cloned
+  }
+
+  /*
+   * not type checking this file because flow doesn't play well with
+   * dynamically accessing methods on Array prototype
+   */
+
+  var arrayProto = Array.prototype;
+  var arrayMethods = Object.create(arrayProto);
+
+  var methodsToPatch = [
+    'push',
+    'pop',
+    'shift',
+    'unshift',
+    'splice',
+    'sort',
+    'reverse'
+  ];
+
+  /**
+   * Intercept mutating methods and emit events
+   */
+  methodsToPatch.forEach(function (method) {
+    // cache original method
+    var original = arrayProto[method];
+    def(arrayMethods, method, function mutator () {
+      var args = [], len = arguments.length;
+      while ( len-- ) args[ len ] = arguments[ len ];
+
+      var result = original.apply(this, args);
+      var ob = this.__ob__;
+      var inserted;
+      switch (method) {
+        case 'push':
+        case 'unshift':
+          inserted = args;
+          break
+        case 'splice':
+          inserted = args.slice(2);
+          break
+      }
+      if (inserted) { ob.observeArray(inserted); }
+      // notify change
+      ob.dep.notify();
+      return result
+    });
+  });
+
+  /*  */
+
+  var arrayKeys = Object.getOwnPropertyNames(arrayMethods);
+
+  /**
+   * In some cases we may want to disable observation inside a component's
+   * update computation.
+   */
+  var shouldObserve = true;
+
+  function toggleObserving (value) {
+    shouldObserve = value;
+  }
+
+  /**
+   * Observer class that is attached to each observed
+   * object. Once attached, the observer converts the target
+   * object's property keys into getter/setters that
+   * collect dependencies and dispatch updates.
+   */
+  var Observer = function Observer (value) {
+    this.value = value;
+    this.dep = new Dep();
+    this.vmCount = 0;
+    def(value, '__ob__', this);
+    if (Array.isArray(value)) {
+      if (hasProto) {
+        protoAugment(value, arrayMethods);
+      } else {
+        copyAugment(value, arrayMethods, arrayKeys);
+      }
+      this.observeArray(value);
+    } else {
+      this.walk(value);
+    }
+  };
+
+  /**
+   * Walk through all properties and convert them into
+   * getter/setters. This method should only be called when
+   * value type is Object.
+   */
+  Observer.prototype.walk = function walk (obj) {
+    var keys = Object.keys(obj);
+    for (var i = 0; i < keys.length; i++) {
+      defineReactive$$1(obj, keys[i]);
+    }
+  };
+
+  /**
+   * Observe a list of Array items.
+   */
+  Observer.prototype.observeArray = function observeArray (items) {
+    for (var i = 0, l = items.length; i < l; i++) {
+      observe(items[i]);
+    }
+  };
+
+  // helpers
+
+  /**
+   * Augment a target Object or Array by intercepting
+   * the prototype chain using __proto__
+   */
+  function protoAugment (target, src) {
+    /* eslint-disable no-proto */
+    target.__proto__ = src;
+    /* eslint-enable no-proto */
+  }
+
+  /**
+   * Augment a target Object or Array by defining
+   * hidden properties.
+   */
+  /* istanbul ignore next */
+  function copyAugment (target, src, keys) {
+    for (var i = 0, l = keys.length; i < l; i++) {
+      var key = keys[i];
+      def(target, key, src[key]);
+    }
+  }
+
+  /**
+   * Attempt to create an observer instance for a value,
+   * returns the new observer if successfully observed,
+   * or the existing observer if the value already has one.
+   */
+  function observe (value, asRootData) {
+    if (!isObject(value) || value instanceof VNode) {
+      return
+    }
+    var ob;
+    if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {
+      ob = value.__ob__;
+    } else if (
+      shouldObserve &&
+      !isServerRendering() &&
+      (Array.isArray(value) || isPlainObject(value)) &&
+      Object.isExtensible(value) &&
+      !value._isVue
+    ) {
+      ob = new Observer(value);
+    }
+    if (asRootData && ob) {
+      ob.vmCount++;
+    }
+    return ob
+  }
+
+  /**
+   * Define a reactive property on an Object.
+   */
+  function defineReactive$$1 (
+    obj,
+    key,
+    val,
+    customSetter,
+    shallow
+  ) {
+    var dep = new Dep();
+
+    var property = Object.getOwnPropertyDescriptor(obj, key);
+    if (property && property.configurable === false) {
+      return
+    }
+
+    // cater for pre-defined getter/setters
+    var getter = property && property.get;
+    var setter = property && property.set;
+    if ((!getter || setter) && arguments.length === 2) {
+      val = obj[key];
+    }
+
+    var childOb = !shallow && observe(val);
+    Object.defineProperty(obj, key, {
+      enumerable: true,
+      configurable: true,
+      get: function reactiveGetter () {
+        var value = getter ? getter.call(obj) : val;
+        if (Dep.target) {
+          dep.depend();
+          if (childOb) {
+            childOb.dep.depend();
+            if (Array.isArray(value)) {
+              dependArray(value);
+            }
+          }
+        }
+        return value
+      },
+      set: function reactiveSetter (newVal) {
+        var value = getter ? getter.call(obj) : val;
+        /* eslint-disable no-self-compare */
+        if (newVal === value || (newVal !== newVal && value !== value)) {
+          return
+        }
+        /* eslint-enable no-self-compare */
+        if (customSetter) {
+          customSetter();
+        }
+        // #7981: for accessor properties without setter
+        if (getter && !setter) { return }
+        if (setter) {
+          setter.call(obj, newVal);
+        } else {
+          val = newVal;
+        }
+        childOb = !shallow && observe(newVal);
+        dep.notify();
+      }
+    });
+  }
+
+  /**
+   * Set a property on an object. Adds the new property and
+   * triggers change notification if the property doesn't
+   * already exist.
+   */
+  function set (target, key, val) {
+    if (isUndef(target) || isPrimitive(target)
+    ) {
+      warn(("Cannot set reactive property on undefined, null, or primitive value: " + ((target))));
+    }
+    if (Array.isArray(target) && isValidArrayIndex(key)) {
+      target.length = Math.max(target.length, key);
+      target.splice(key, 1, val);
+      return val
+    }
+    if (key in target && !(key in Object.prototype)) {
+      target[key] = val;
+      return val
+    }
+    var ob = (target).__ob__;
+    if (target._isVue || (ob && ob.vmCount)) {
+      warn(
+        'Avoid adding reactive properties to a Vue instance or its root $data ' +
+        'at runtime - declare it upfront in the data option.'
+      );
+      return val
+    }
+    if (!ob) {
+      target[key] = val;
+      return val
+    }
+    defineReactive$$1(ob.value, key, val);
+    ob.dep.notify();
+    return val
+  }
+
+  /**
+   * Delete a property and trigger change if necessary.
+   */
+  function del (target, key) {
+    if (isUndef(target) || isPrimitive(target)
+    ) {
+      warn(("Cannot delete reactive property on undefined, null, or primitive value: " + ((target))));
+    }
+    if (Array.isArray(target) && isValidArrayIndex(key)) {
+      target.splice(key, 1);
+      return
+    }
+    var ob = (target).__ob__;
+    if (target._isVue || (ob && ob.vmCount)) {
+      warn(
+        'Avoid deleting properties on a Vue instance or its root $data ' +
+        '- just set it to null.'
+      );
+      return
+    }
+    if (!hasOwn(target, key)) {
+      return
+    }
+    delete target[key];
+    if (!ob) {
+      return
+    }
+    ob.dep.notify();
+  }
+
+  /**
+   * Collect dependencies on array elements when the array is touched, since
+   * we cannot intercept array element access like property getters.
+   */
+  function dependArray (value) {
+    for (var e = (void 0), i = 0, l = value.length; i < l; i++) {
+      e = value[i];
+      e && e.__ob__ && e.__ob__.dep.depend();
+      if (Array.isArray(e)) {
+        dependArray(e);
+      }
+    }
+  }
+
+  /*  */
+
+  /**
+   * Option overwriting strategies are functions that handle
+   * how to merge a parent option value and a child option
+   * value into the final value.
+   */
+  var strats = config.optionMergeStrategies;
+
+  /**
+   * Options with restrictions
+   */
+  {
+    strats.el = strats.propsData = function (parent, child, vm, key) {
+      if (!vm) {
+        warn(
+          "option \"" + key + "\" can only be used during instance " +
+          'creation with the `new` keyword.'
+        );
+      }
+      return defaultStrat(parent, child)
+    };
+  }
+
+  /**
+   * Helper that recursively merges two data objects together.
+   */
+  function mergeData (to, from) {
+    if (!from) { return to }
+    var key, toVal, fromVal;
+
+    var keys = hasSymbol
+      ? Reflect.ownKeys(from)
+      : Object.keys(from);
+
+    for (var i = 0; i < keys.length; i++) {
+      key = keys[i];
+      // in case the object is already observed...
+      if (key === '__ob__') { continue }
+      toVal = to[key];
+      fromVal = from[key];
+      if (!hasOwn(to, key)) {
+        set(to, key, fromVal);
+      } else if (
+        toVal !== fromVal &&
+        isPlainObject(toVal) &&
+        isPlainObject(fromVal)
+      ) {
+        mergeData(toVal, fromVal);
+      }
+    }
+    return to
+  }
+
+  /**
+   * Data
+   */
+  function mergeDataOrFn (
+    parentVal,
+    childVal,
+    vm
+  ) {
+    if (!vm) {
+      // in a Vue.extend merge, both should be functions
+      if (!childVal) {
+        return parentVal
+      }
+      if (!parentVal) {
+        return childVal
+      }
+      // when parentVal & childVal are both present,
+      // we need to return a function that returns the
+      // merged result of both functions... no need to
+      // check if parentVal is a function here because
+      // it has to be a function to pass previous merges.
+      return function mergedDataFn () {
+        return mergeData(
+          typeof childVal === 'function' ? childVal.call(this, this) : childVal,
+          typeof parentVal === 'function' ? parentVal.call(this, this) : parentVal
+        )
+      }
+    } else {
+      return function mergedInstanceDataFn () {
+        // instance merge
+        var instanceData = typeof childVal === 'function'
+          ? childVal.call(vm, vm)
+          : childVal;
+        var defaultData = typeof parentVal === 'function'
+          ? parentVal.call(vm, vm)
+          : parentVal;
+        if (instanceData) {
+          return mergeData(instanceData, defaultData)
+        } else {
+          return defaultData
+        }
+      }
+    }
+  }
+
+  strats.data = function (
+    parentVal,
+    childVal,
+    vm
+  ) {
+    if (!vm) {
+      if (childVal && typeof childVal !== 'function') {
+        warn(
+          'The "data" option should be a function ' +
+          'that returns a per-instance value in component ' +
+          'definitions.',
+          vm
+        );
+
+        return parentVal
+      }
+      return mergeDataOrFn(parentVal, childVal)
+    }
+
+    return mergeDataOrFn(parentVal, childVal, vm)
+  };
+
+  /**
+   * Hooks and props are merged as arrays.
+   */
+  function mergeHook (
+    parentVal,
+    childVal
+  ) {
+    var res = childVal
+      ? parentVal
+        ? parentVal.concat(childVal)
+        : Array.isArray(childVal)
+          ? childVal
+          : [childVal]
+      : parentVal;
+    return res
+      ? dedupeHooks(res)
+      : res
+  }
+
+  function dedupeHooks (hooks) {
+    var res = [];
+    for (var i = 0; i < hooks.length; i++) {
+      if (res.indexOf(hooks[i]) === -1) {
+        res.push(hooks[i]);
+      }
+    }
+    return res
+  }
+
+  LIFECYCLE_HOOKS.forEach(function (hook) {
+    strats[hook] = mergeHook;
+  });
+
+  /**
+   * Assets
+   *
+   * When a vm is present (instance creation), we need to do
+   * a three-way merge between constructor options, instance
+   * options and parent options.
+   */
+  function mergeAssets (
+    parentVal,
+    childVal,
+    vm,
+    key
+  ) {
+    var res = Object.create(parentVal || null);
+    if (childVal) {
+      assertObjectType(key, childVal, vm);
+      return extend(res, childVal)
+    } else {
+      return res
+    }
+  }
+
+  ASSET_TYPES.forEach(function (type) {
+    strats[type + 's'] = mergeAssets;
+  });
+
+  /**
+   * Watchers.
+   *
+   * Watchers hashes should not overwrite one
+   * another, so we merge them as arrays.
+   */
+  strats.watch = function (
+    parentVal,
+    childVal,
+    vm,
+    key
+  ) {
+    // work around Firefox's Object.prototype.watch...
+    if (parentVal === nativeWatch) { parentVal = undefined; }
+    if (childVal === nativeWatch) { childVal = undefined; }
+    /* istanbul ignore if */
+    if (!childVal) { return Object.create(parentVal || null) }
+    {
+      assertObjectType(key, childVal, vm);
+    }
+    if (!parentVal) { return childVal }
+    var ret = {};
+    extend(ret, parentVal);
+    for (var key$1 in childVal) {
+      var parent = ret[key$1];
+      var child = childVal[key$1];
+      if (parent && !Array.isArray(parent)) {
+        parent = [parent];
+      }
+      ret[key$1] = parent
+        ? parent.concat(child)
+        : Array.isArray(child) ? child : [child];
+    }
+    return ret
+  };
+
+  /**
+   * Other object hashes.
+   */
+  strats.props =
+  strats.methods =
+  strats.inject =
+  strats.computed = function (
+    parentVal,
+    childVal,
+    vm,
+    key
+  ) {
+    if (childVal && "development" !== 'production') {
+      assertObjectType(key, childVal, vm);
+    }
+    if (!parentVal) { return childVal }
+    var ret = Object.create(null);
+    extend(ret, parentVal);
+    if (childVal) { extend(ret, childVal); }
+    return ret
+  };
+  strats.provide = mergeDataOrFn;
+
+  /**
+   * Default strategy.
+   */
+  var defaultStrat = function (parentVal, childVal) {
+    return childVal === undefined
+      ? parentVal
+      : childVal
+  };
+
+  /**
+   * Validate component names
+   */
+  function checkComponents (options) {
+    for (var key in options.components) {
+      validateComponentName(key);
+    }
+  }
+
+  function validateComponentName (name) {
+    if (!new RegExp(("^[a-zA-Z][\\-\\.0-9_" + (unicodeRegExp.source) + "]*$")).test(name)) {
+      warn(
+        'Invalid component name: "' + name + '". Component names ' +
+        'should conform to valid custom element name in html5 specification.'
+      );
+    }
+    if (isBuiltInTag(name) || config.isReservedTag(name)) {
+      warn(
+        'Do not use built-in or reserved HTML elements as component ' +
+        'id: ' + name
+      );
+    }
+  }
+
+  /**
+   * Ensure all props option syntax are normalized into the
+   * Object-based format.
+   */
+  function normalizeProps (options, vm) {
+    var props = options.props;
+    if (!props) { return }
+    var res = {};
+    var i, val, name;
+    if (Array.isArray(props)) {
+      i = props.length;
+      while (i--) {
+        val = props[i];
+        if (typeof val === 'string') {
+          name = camelize(val);
+          res[name] = { type: null };
+        } else {
+          warn('props must be strings when using array syntax.');
+        }
+      }
+    } else if (isPlainObject(props)) {
+      for (var key in props) {
+        val = props[key];
+        name = camelize(key);
+        res[name] = isPlainObject(val)
+          ? val
+          : { type: val };
+      }
+    } else {
+      warn(
+        "Invalid value for option \"props\": expected an Array or an Object, " +
+        "but got " + (toRawType(props)) + ".",
+        vm
+      );
+    }
+    options.props = res;
+  }
+
+  /**
+   * Normalize all injections into Object-based format
+   */
+  function normalizeInject (options, vm) {
+    var inject = options.inject;
+    if (!inject) { return }
+    var normalized = options.inject = {};
+    if (Array.isArray(inject)) {
+      for (var i = 0; i < inject.length; i++) {
+        normalized[inject[i]] = { from: inject[i] };
+      }
+    } else if (isPlainObject(inject)) {
+      for (var key in inject) {
+        var val = inject[key];
+        normalized[key] = isPlainObject(val)
+          ? extend({ from: key }, val)
+          : { from: val };
+      }
+    } else {
+      warn(
+        "Invalid value for option \"inject\": expected an Array or an Object, " +
+        "but got " + (toRawType(inject)) + ".",
+        vm
+      );
+    }
+  }
+
+  /**
+   * Normalize raw function directives into object format.
+   */
+  function normalizeDirectives (options) {
+    var dirs = options.directives;
+    if (dirs) {
+      for (var key in dirs) {
+        var def$$1 = dirs[key];
+        if (typeof def$$1 === 'function') {
+          dirs[key] = { bind: def$$1, update: def$$1 };
+        }
+      }
+    }
+  }
+
+  function assertObjectType (name, value, vm) {
+    if (!isPlainObject(value)) {
+      warn(
+        "Invalid value for option \"" + name + "\": expected an Object, " +
+        "but got " + (toRawType(value)) + ".",
+        vm
+      );
+    }
+  }
+
+  /**
+   * Merge two option objects into a new one.
+   * Core utility used in both instantiation and inheritance.
+   */
+  function mergeOptions (
+    parent,
+    child,
+    vm
+  ) {
+    {
+      checkComponents(child);
+    }
+
+    if (typeof child === 'function') {
+      child = child.options;
+    }
+
+    normalizeProps(child, vm);
+    normalizeInject(child, vm);
+    normalizeDirectives(child);
+
+    // Apply extends and mixins on the child options,
+    // but only if it is a raw options object that isn't
+    // the result of another mergeOptions call.
+    // Only merged options has the _base property.
+    if (!child._base) {
+      if (child.extends) {
+        parent = mergeOptions(parent, child.extends, vm);
+      }
+      if (child.mixins) {
+        for (var i = 0, l = child.mixins.length; i < l; i++) {
+          parent = mergeOptions(parent, child.mixins[i], vm);
+        }
+      }
+    }
+
+    var options = {};
+    var key;
+    for (key in parent) {
+      mergeField(key);
+    }
+    for (key in child) {
+      if (!hasOwn(parent, key)) {
+        mergeField(key);
+      }
+    }
+    function mergeField (key) {
+      var strat = strats[key] || defaultStrat;
+      options[key] = strat(parent[key], child[key], vm, key);
+    }
+    return options
+  }
+
+  /**
+   * Resolve an asset.
+   * This function is used because child instances need access
+   * to assets defined in its ancestor chain.
+   */
+  function resolveAsset (
+    options,
+    type,
+    id,
+    warnMissing
+  ) {
+    /* istanbul ignore if */
+    if (typeof id !== 'string') {
+      return
+    }
+    var assets = options[type];
+    // check local registration variations first
+    if (hasOwn(assets, id)) { return assets[id] }
+    var camelizedId = camelize(id);
+    if (hasOwn(assets, camelizedId)) { return assets[camelizedId] }
+    var PascalCaseId = capitalize(camelizedId);
+    if (hasOwn(assets, PascalCaseId)) { return assets[PascalCaseId] }
+    // fallback to prototype chain
+    var res = assets[id] || assets[camelizedId] || assets[PascalCaseId];
+    if (warnMissing && !res) {
+      warn(
+        'Failed to resolve ' + type.slice(0, -1) + ': ' + id,
+        options
+      );
+    }
+    return res
+  }
+
+  /*  */
+
+
+
+  function validateProp (
+    key,
+    propOptions,
+    propsData,
+    vm
+  ) {
+    var prop = propOptions[key];
+    var absent = !hasOwn(propsData, key);
+    var value = propsData[key];
+    // boolean casting
+    var booleanIndex = getTypeIndex(Boolean, prop.type);
+    if (booleanIndex > -1) {
+      if (absent && !hasOwn(prop, 'default')) {
+        value = false;
+      } else if (value === '' || value === hyphenate(key)) {
+        // only cast empty string / same name to boolean if
+        // boolean has higher priority
+        var stringIndex = getTypeIndex(String, prop.type);
+        if (stringIndex < 0 || booleanIndex < stringIndex) {
+          value = true;
+        }
+      }
+    }
+    // check default value
+    if (value === undefined) {
+      value = getPropDefaultValue(vm, prop, key);
+      // since the default value is a fresh copy,
+      // make sure to observe it.
+      var prevShouldObserve = shouldObserve;
+      toggleObserving(true);
+      observe(value);
+      toggleObserving(prevShouldObserve);
+    }
+    {
+      assertProp(prop, key, value, vm, absent);
+    }
+    return value
+  }
+
+  /**
+   * Get the default value of a prop.
+   */
+  function getPropDefaultValue (vm, prop, key) {
+    // no default, return undefined
+    if (!hasOwn(prop, 'default')) {
+      return undefined
+    }
+    var def = prop.default;
+    // warn against non-factory defaults for Object & Array
+    if (isObject(def)) {
+      warn(
+        'Invalid default value for prop "' + key + '": ' +
+        'Props with type Object/Array must use a factory function ' +
+        'to return the default value.',
+        vm
+      );
+    }
+    // the raw prop value was also undefined from previous render,
+    // return previous default value to avoid unnecessary watcher trigger
+    if (vm && vm.$options.propsData &&
+      vm.$options.propsData[key] === undefined &&
+      vm._props[key] !== undefined
+    ) {
+      return vm._props[key]
+    }
+    // call factory function for non-Function types
+    // a value is Function if its prototype is function even across different execution context
+    return typeof def === 'function' && getType(prop.type) !== 'Function'
+      ? def.call(vm)
+      : def
+  }
+
+  /**
+   * Assert whether a prop is valid.
+   */
+  function assertProp (
+    prop,
+    name,
+    value,
+    vm,
+    absent
+  ) {
+    if (prop.required && absent) {
+      warn(
+        'Missing required prop: "' + name + '"',
+        vm
+      );
+      return
+    }
+    if (value == null && !prop.required) {
+      return
+    }
+    var type = prop.type;
+    var valid = !type || type === true;
+    var expectedTypes = [];
+    if (type) {
+      if (!Array.isArray(type)) {
+        type = [type];
+      }
+      for (var i = 0; i < type.length && !valid; i++) {
+        var assertedType = assertType(value, type[i]);
+        expectedTypes.push(assertedType.expectedType || '');
+        valid = assertedType.valid;
+      }
+    }
+
+    if (!valid) {
+      warn(
+        getInvalidTypeMessage(name, value, expectedTypes),
+        vm
+      );
+      return
+    }
+    var validator = prop.validator;
+    if (validator) {
+      if (!validator(value)) {
+        warn(
+          'Invalid prop: custom validator check failed for prop "' + name + '".',
+          vm
+        );
+      }
+    }
+  }
+
+  var simpleCheckRE = /^(String|Number|Boolean|Function|Symbol)$/;
+
+  function assertType (value, type) {
+    var valid;
+    var expectedType = getType(type);
+    if (simpleCheckRE.test(expectedType)) {
+      var t = typeof value;
+      valid = t === expectedType.toLowerCase();
+      // for primitive wrapper objects
+      if (!valid && t === 'object') {
+        valid = value instanceof type;
+      }
+    } else if (expectedType === 'Object') {
+      valid = isPlainObject(value);
+    } else if (expectedType === 'Array') {
+      valid = Array.isArray(value);
+    } else {
+      valid = value instanceof type;
+    }
+    return {
+      valid: valid,
+      expectedType: expectedType
+    }
+  }
+
+  /**
+   * Use function string name to check built-in types,
+   * because a simple equality check will fail when running
+   * across different vms / iframes.
+   */
+  function getType (fn) {
+    var match = fn && fn.toString().match(/^\s*function (\w+)/);
+    return match ? match[1] : ''
+  }
+
+  function isSameType (a, b) {
+    return getType(a) === getType(b)
+  }
+
+  function getTypeIndex (type, expectedTypes) {
+    if (!Array.isArray(expectedTypes)) {
+      return isSameType(expectedTypes, type) ? 0 : -1
+    }
+    for (var i = 0, len = expectedTypes.length; i < len; i++) {
+      if (isSameType(expectedTypes[i], type)) {
+        return i
+      }
+    }
+    return -1
+  }
+
+  function getInvalidTypeMessage (name, value, expectedTypes) {
+    var message = "Invalid prop: type check failed for prop \"" + name + "\"." +
+      " Expected " + (expectedTypes.map(capitalize).join(', '));
+    var expectedType = expectedTypes[0];
+    var receivedType = toRawType(value);
+    var expectedValue = styleValue(value, expectedType);
+    var receivedValue = styleValue(value, receivedType);
+    // check if we need to specify expected value
+    if (expectedTypes.length === 1 &&
+        isExplicable(expectedType) &&
+        !isBoolean(expectedType, receivedType)) {
+      message += " with value " + expectedValue;
+    }
+    message += ", got " + receivedType + " ";
+    // check if we need to specify received value
+    if (isExplicable(receivedType)) {
+      message += "with value " + receivedValue + ".";
+    }
+    return message
+  }
+
+  function styleValue (value, type) {
+    if (type === 'String') {
+      return ("\"" + value + "\"")
+    } else if (type === 'Number') {
+      return ("" + (Number(value)))
+    } else {
+      return ("" + value)
+    }
+  }
+
+  function isExplicable (value) {
+    var explicitTypes = ['string', 'number', 'boolean'];
+    return explicitTypes.some(function (elem) { return value.toLowerCase() === elem; })
+  }
+
+  function isBoolean () {
+    var args = [], len = arguments.length;
+    while ( len-- ) args[ len ] = arguments[ len ];
+
+    return args.some(function (elem) { return elem.toLowerCase() === 'boolean'; })
+  }
+
+  /*  */
+
+  function handleError (err, vm, info) {
+    // Deactivate deps tracking while processing error handler to avoid possible infinite rendering.
+    // See: https://github.com/vuejs/vuex/issues/1505
+    pushTarget();
+    try {
+      if (vm) {
+        var cur = vm;
+        while ((cur = cur.$parent)) {
+          var hooks = cur.$options.errorCaptured;
+          if (hooks) {
+            for (var i = 0; i < hooks.length; i++) {
+              try {
+                var capture = hooks[i].call(cur, err, vm, info) === false;
+                if (capture) { return }
+              } catch (e) {
+                globalHandleError(e, cur, 'errorCaptured hook');
+              }
+            }
+          }
+        }
+      }
+      globalHandleError(err, vm, info);
+    } finally {
+      popTarget();
+    }
+  }
+
+  function invokeWithErrorHandling (
+    handler,
+    context,
+    args,
+    vm,
+    info
+  ) {
+    var res;
+    try {
+      res = args ? handler.apply(context, args) : handler.call(context);
+      if (res && !res._isVue && isPromise(res) && !res._handled) {
+        res.catch(function (e) { return handleError(e, vm, info + " (Promise/async)"); });
+        // issue #9511
+        // avoid catch triggering multiple times when nested calls
+        res._handled = true;
+      }
+    } catch (e) {
+      handleError(e, vm, info);
+    }
+    return res
+  }
+
+  function globalHandleError (err, vm, info) {
+    if (config.errorHandler) {
+      try {
+        return config.errorHandler.call(null, err, vm, info)
+      } catch (e) {
+        // if the user intentionally throws the original error in the handler,
+        // do not log it twice
+        if (e !== err) {
+          logError(e, null, 'config.errorHandler');
+        }
+      }
+    }
+    logError(err, vm, info);
+  }
+
+  function logError (err, vm, info) {
+    {
+      warn(("Error in " + info + ": \"" + (err.toString()) + "\""), vm);
+    }
+    /* istanbul ignore else */
+    if ((inBrowser || inWeex) && typeof console !== 'undefined') {
+      console.error(err);
+    } else {
+      throw err
+    }
+  }
+
+  /*  */
+
+  var isUsingMicroTask = false;
+
+  var callbacks = [];
+  var pending = false;
+
+  function flushCallbacks () {
+    pending = false;
+    var copies = callbacks.slice(0);
+    callbacks.length = 0;
+    for (var i = 0; i < copies.length; i++) {
+      copies[i]();
+    }
+  }
+
+  // Here we have async deferring wrappers using microtasks.
+  // In 2.5 we used (macro) tasks (in combination with microtasks).
+  // However, it has subtle problems when state is changed right before repaint
+  // (e.g. #6813, out-in transitions).
+  // Also, using (macro) tasks in event handler would cause some weird behaviors
+  // that cannot be circumvented (e.g. #7109, #7153, #7546, #7834, #8109).
+  // So we now use microtasks everywhere, again.
+  // A major drawback of this tradeoff is that there are some scenarios
+  // where microtasks have too high a priority and fire in between supposedly
+  // sequential events (e.g. #4521, #6690, which have workarounds)
+  // or even between bubbling of the same event (#6566).
+  var timerFunc;
+
+  // The nextTick behavior leverages the microtask queue, which can be accessed
+  // via either native Promise.then or MutationObserver.
+  // MutationObserver has wider support, however it is seriously bugged in
+  // UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It
+  // completely stops working after triggering a few times... so, if native
+  // Promise is available, we will use it:
+  /* istanbul ignore next, $flow-disable-line */
+  if (typeof Promise !== 'undefined' && isNative(Promise)) {
+    var p = Promise.resolve();
+    timerFunc = function () {
+      p.then(flushCallbacks);
+      // In problematic UIWebViews, Promise.then doesn't completely break, but
+      // it can get stuck in a weird state where callbacks are pushed into the
+      // microtask queue but the queue isn't being flushed, until the browser
+      // needs to do some other work, e.g. handle a timer. Therefore we can
+      // "force" the microtask queue to be flushed by adding an empty timer.
+      if (isIOS) { setTimeout(noop); }
+    };
+    isUsingMicroTask = true;
+  } else if (!isIE && typeof MutationObserver !== 'undefined' && (
+    isNative(MutationObserver) ||
+    // PhantomJS and iOS 7.x
+    MutationObserver.toString() === '[object MutationObserverConstructor]'
+  )) {
+    // Use MutationObserver where native Promise is not available,
+    // e.g. PhantomJS, iOS7, Android 4.4
+    // (#6466 MutationObserver is unreliable in IE11)
+    var counter = 1;
+    var observer = new MutationObserver(flushCallbacks);
+    var textNode = document.createTextNode(String(counter));
+    observer.observe(textNode, {
+      characterData: true
+    });
+    timerFunc = function () {
+      counter = (counter + 1) % 2;
+      textNode.data = String(counter);
+    };
+    isUsingMicroTask = true;
+  } else if (typeof setImmediate !== 'undefined' && isNative(setImmediate)) {
+    // Fallback to setImmediate.
+    // Technically it leverages the (macro) task queue,
+    // but it is still a better choice than setTimeout.
+    timerFunc = function () {
+      setImmediate(flushCallbacks);
+    };
+  } else {
+    // Fallback to setTimeout.
+    timerFunc = function () {
+      setTimeout(flushCallbacks, 0);
+    };
+  }
+
+  function nextTick (cb, ctx) {
+    var _resolve;
+    callbacks.push(function () {
+      if (cb) {
+        try {
+          cb.call(ctx);
+        } catch (e) {
+          handleError(e, ctx, 'nextTick');
+        }
+      } else if (_resolve) {
+        _resolve(ctx);
+      }
+    });
+    if (!pending) {
+      pending = true;
+      timerFunc();
+    }
+    // $flow-disable-line
+    if (!cb && typeof Promise !== 'undefined') {
+      return new Promise(function (resolve) {
+        _resolve = resolve;
+      })
+    }
+  }
+
+  /*  */
+
+  var mark;
+  var measure;
+
+  {
+    var perf = inBrowser && window.performance;
+    /* istanbul ignore if */
+    if (
+      perf &&
+      perf.mark &&
+      perf.measure &&
+      perf.clearMarks &&
+      perf.clearMeasures
+    ) {
+      mark = function (tag) { return perf.mark(tag); };
+      measure = function (name, startTag, endTag) {
+        perf.measure(name, startTag, endTag);
+        perf.clearMarks(startTag);
+        perf.clearMarks(endTag);
+        // perf.clearMeasures(name)
+      };
+    }
+  }
+
+  /* not type checking this file because flow doesn't play well with Proxy */
+
+  var initProxy;
+
+  {
+    var allowedGlobals = makeMap(
+      'Infinity,undefined,NaN,isFinite,isNaN,' +
+      'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' +
+      'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,' +
+      'require' // for Webpack/Browserify
+    );
+
+    var warnNonPresent = function (target, key) {
+      warn(
+        "Property or method \"" + key + "\" is not defined on the instance but " +
+        'referenced during render. Make sure that this property is reactive, ' +
+        'either in the data option, or for class-based components, by ' +
+        'initializing the property. ' +
+        'See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.',
+        target
+      );
+    };
+
+    var warnReservedPrefix = function (target, key) {
+      warn(
+        "Property \"" + key + "\" must be accessed with \"$data." + key + "\" because " +
+        'properties starting with "$" or "_" are not proxied in the Vue instance to ' +
+        'prevent conflicts with Vue internals. ' +
+        'See: https://vuejs.org/v2/api/#data',
+        target
+      );
+    };
+
+    var hasProxy =
+      typeof Proxy !== 'undefined' && isNative(Proxy);
+
+    if (hasProxy) {
+      var isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta,exact');
+      config.keyCodes = new Proxy(config.keyCodes, {
+        set: function set (target, key, value) {
+          if (isBuiltInModifier(key)) {
+            warn(("Avoid overwriting built-in modifier in config.keyCodes: ." + key));
+            return false
+          } else {
+            target[key] = value;
+            return true
+          }
+        }
+      });
+    }
+
+    var hasHandler = {
+      has: function has (target, key) {
+        var has = key in target;
+        var isAllowed = allowedGlobals(key) ||
+          (typeof key === 'string' && key.charAt(0) === '_' && !(key in target.$data));
+        if (!has && !isAllowed) {
+          if (key in target.$data) { warnReservedPrefix(target, key); }
+          else { warnNonPresent(target, key); }
+        }
+        return has || !isAllowed
+      }
+    };
+
+    var getHandler = {
+      get: function get (target, key) {
+        if (typeof key === 'string' && !(key in target)) {
+          if (key in target.$data) { warnReservedPrefix(target, key); }
+          else { warnNonPresent(target, key); }
+        }
+        return target[key]
+      }
+    };
+
+    initProxy = function initProxy (vm) {
+      if (hasProxy) {
+        // determine which proxy handler to use
+        var options = vm.$options;
+        var handlers = options.render && options.render._withStripped
+          ? getHandler
+          : hasHandler;
+        vm._renderProxy = new Proxy(vm, handlers);
+      } else {
+        vm._renderProxy = vm;
+      }
+    };
+  }
+
+  /*  */
+
+  var seenObjects = new _Set();
+
+  /**
+   * Recursively traverse an object to evoke all converted
+   * getters, so that every nested property inside the object
+   * is collected as a "deep" dependency.
+   */
+  function traverse (val) {
+    _traverse(val, seenObjects);
+    seenObjects.clear();
+  }
+
+  function _traverse (val, seen) {
+    var i, keys;
+    var isA = Array.isArray(val);
+    if ((!isA && !isObject(val)) || Object.isFrozen(val) || val instanceof VNode) {
+      return
+    }
+    if (val.__ob__) {
+      var depId = val.__ob__.dep.id;
+      if (seen.has(depId)) {
+        return
+      }
+      seen.add(depId);
+    }
+    if (isA) {
+      i = val.length;
+      while (i--) { _traverse(val[i], seen); }
+    } else {
+      keys = Object.keys(val);
+      i = keys.length;
+      while (i--) { _traverse(val[keys[i]], seen); }
+    }
+  }
+
+  /*  */
+
+  var normalizeEvent = cached(function (name) {
+    var passive = name.charAt(0) === '&';
+    name = passive ? name.slice(1) : name;
+    var once$$1 = name.charAt(0) === '~'; // Prefixed last, checked first
+    name = once$$1 ? name.slice(1) : name;
+    var capture = name.charAt(0) === '!';
+    name = capture ? name.slice(1) : name;
+    return {
+      name: name,
+      once: once$$1,
+      capture: capture,
+      passive: passive
+    }
+  });
+
+  function createFnInvoker (fns, vm) {
+    function invoker () {
+      var arguments$1 = arguments;
+
+      var fns = invoker.fns;
+      if (Array.isArray(fns)) {
+        var cloned = fns.slice();
+        for (var i = 0; i < cloned.length; i++) {
+          invokeWithErrorHandling(cloned[i], null, arguments$1, vm, "v-on handler");
+        }
+      } else {
+        // return handler return value for single handlers
+        return invokeWithErrorHandling(fns, null, arguments, vm, "v-on handler")
+      }
+    }
+    invoker.fns = fns;
+    return invoker
+  }
+
+  function updateListeners (
+    on,
+    oldOn,
+    add,
+    remove$$1,
+    createOnceHandler,
+    vm
+  ) {
+    var name, def$$1, cur, old, event;
+    for (name in on) {
+      def$$1 = cur = on[name];
+      old = oldOn[name];
+      event = normalizeEvent(name);
+      if (isUndef(cur)) {
+        warn(
+          "Invalid handler for event \"" + (event.name) + "\": got " + String(cur),
+          vm
+        );
+      } else if (isUndef(old)) {
+        if (isUndef(cur.fns)) {
+          cur = on[name] = createFnInvoker(cur, vm);
+        }
+        if (isTrue(event.once)) {
+          cur = on[name] = createOnceHandler(event.name, cur, event.capture);
+        }
+        add(event.name, cur, event.capture, event.passive, event.params);
+      } else if (cur !== old) {
+        old.fns = cur;
+        on[name] = old;
+      }
+    }
+    for (name in oldOn) {
+      if (isUndef(on[name])) {
+        event = normalizeEvent(name);
+        remove$$1(event.name, oldOn[name], event.capture);
+      }
+    }
+  }
+
+  /*  */
+
+  function mergeVNodeHook (def, hookKey, hook) {
+    if (def instanceof VNode) {
+      def = def.data.hook || (def.data.hook = {});
+    }
+    var invoker;
+    var oldHook = def[hookKey];
+
+    function wrappedHook () {
+      hook.apply(this, arguments);
+      // important: remove merged hook to ensure it's called only once
+      // and prevent memory leak
+      remove(invoker.fns, wrappedHook);
+    }
+
+    if (isUndef(oldHook)) {
+      // no existing hook
+      invoker = createFnInvoker([wrappedHook]);
+    } else {
+      /* istanbul ignore if */
+      if (isDef(oldHook.fns) && isTrue(oldHook.merged)) {
+        // already a merged invoker
+        invoker = oldHook;
+        invoker.fns.push(wrappedHook);
+      } else {
+        // existing plain hook
+        invoker = createFnInvoker([oldHook, wrappedHook]);
+      }
+    }
+
+    invoker.merged = true;
+    def[hookKey] = invoker;
+  }
+
+  /*  */
+
+  function extractPropsFromVNodeData (
+    data,
+    Ctor,
+    tag
+  ) {
+    // we are only extracting raw values here.
+    // validation and default values are handled in the child
+    // component itself.
+    var propOptions = Ctor.options.props;
+    if (isUndef(propOptions)) {
+      return
+    }
+    var res = {};
+    var attrs = data.attrs;
+    var props = data.props;
+    if (isDef(attrs) || isDef(props)) {
+      for (var key in propOptions) {
+        var altKey = hyphenate(key);
+        {
+          var keyInLowerCase = key.toLowerCase();
+          if (
+            key !== keyInLowerCase &&
+            attrs && hasOwn(attrs, keyInLowerCase)
+          ) {
+            tip(
+              "Prop \"" + keyInLowerCase + "\" is passed to component " +
+              (formatComponentName(tag || Ctor)) + ", but the declared prop name is" +
+              " \"" + key + "\". " +
+              "Note that HTML attributes are case-insensitive and camelCased " +
+              "props need to use their kebab-case equivalents when using in-DOM " +
+              "templates. You should probably use \"" + altKey + "\" instead of \"" + key + "\"."
+            );
+          }
+        }
+        checkProp(res, props, key, altKey, true) ||
+        checkProp(res, attrs, key, altKey, false);
+      }
+    }
+    return res
+  }
+
+  function checkProp (
+    res,
+    hash,
+    key,
+    altKey,
+    preserve
+  ) {
+    if (isDef(hash)) {
+      if (hasOwn(hash, key)) {
+        res[key] = hash[key];
+        if (!preserve) {
+          delete hash[key];
+        }
+        return true
+      } else if (hasOwn(hash, altKey)) {
+        res[key] = hash[altKey];
+        if (!preserve) {
+          delete hash[altKey];
+        }
+        return true
+      }
+    }
+    return false
+  }
+
+  /*  */
+
+  // The template compiler attempts to minimize the need for normalization by
+  // statically analyzing the template at compile time.
+  //
+  // For plain HTML markup, normalization can be completely skipped because the
+  // generated render function is guaranteed to return Array<VNode>. There are
+  // two cases where extra normalization is needed:
+
+  // 1. When the children contains components - because a functional component
+  // may return an Array instead of a single root. In this case, just a simple
+  // normalization is needed - if any child is an Array, we flatten the whole
+  // thing with Array.prototype.concat. It is guaranteed to be only 1-level deep
+  // because functional components already normalize their own children.
+  function simpleNormalizeChildren (children) {
+    for (var i = 0; i < children.length; i++) {
+      if (Array.isArray(children[i])) {
+        return Array.prototype.concat.apply([], children)
+      }
+    }
+    return children
+  }
+
+  // 2. When the children contains constructs that always generated nested Arrays,
+  // e.g. <template>, <slot>, v-for, or when the children is provided by user
+  // with hand-written render functions / JSX. In such cases a full normalization
+  // is needed to cater to all possible types of children values.
+  function normalizeChildren (children) {
+    return isPrimitive(children)
+      ? [createTextVNode(children)]
+      : Array.isArray(children)
+        ? normalizeArrayChildren(children)
+        : undefined
+  }
+
+  function isTextNode (node) {
+    return isDef(node) && isDef(node.text) && isFalse(node.isComment)
+  }
+
+  function normalizeArrayChildren (children, nestedIndex) {
+    var res = [];
+    var i, c, lastIndex, last;
+    for (i = 0; i < children.length; i++) {
+      c = children[i];
+      if (isUndef(c) || typeof c === 'boolean') { continue }
+      lastIndex = res.length - 1;
+      last = res[lastIndex];
+      //  nested
+      if (Array.isArray(c)) {
+        if (c.length > 0) {
+          c = normalizeArrayChildren(c, ((nestedIndex || '') + "_" + i));
+          // merge adjacent text nodes
+          if (isTextNode(c[0]) && isTextNode(last)) {
+            res[lastIndex] = createTextVNode(last.text + (c[0]).text);
+            c.shift();
+          }
+          res.push.apply(res, c);
+        }
+      } else if (isPrimitive(c)) {
+        if (isTextNode(last)) {
+          // merge adjacent text nodes
+          // this is necessary for SSR hydration because text nodes are
+          // essentially merged when rendered to HTML strings
+          res[lastIndex] = createTextVNode(last.text + c);
+        } else if (c !== '') {
+          // convert primitive to vnode
+          res.push(createTextVNode(c));
+        }
+      } else {
+        if (isTextNode(c) && isTextNode(last)) {
+          // merge adjacent text nodes
+          res[lastIndex] = createTextVNode(last.text + c.text);
+        } else {
+          // default key for nested array children (likely generated by v-for)
+          if (isTrue(children._isVList) &&
+            isDef(c.tag) &&
+            isUndef(c.key) &&
+            isDef(nestedIndex)) {
+            c.key = "__vlist" + nestedIndex + "_" + i + "__";
+          }
+          res.push(c);
+        }
+      }
+    }
+    return res
+  }
+
+  /*  */
+
+  function initProvide (vm) {
+    var provide = vm.$options.provide;
+    if (provide) {
+      vm._provided = typeof provide === 'function'
+        ? provide.call(vm)
+        : provide;
+    }
+  }
+
+  function initInjections (vm) {
+    var result = resolveInject(vm.$options.inject, vm);
+    if (result) {
+      toggleObserving(false);
+      Object.keys(result).forEach(function (key) {
+        /* istanbul ignore else */
+        {
+          defineReactive$$1(vm, key, result[key], function () {
+            warn(
+              "Avoid mutating an injected value directly since the changes will be " +
+              "overwritten whenever the provided component re-renders. " +
+              "injection being mutated: \"" + key + "\"",
+              vm
+            );
+          });
+        }
+      });
+      toggleObserving(true);
+    }
+  }
+
+  function resolveInject (inject, vm) {
+    if (inject) {
+      // inject is :any because flow is not smart enough to figure out cached
+      var result = Object.create(null);
+      var keys = hasSymbol
+        ? Reflect.ownKeys(inject)
+        : Object.keys(inject);
+
+      for (var i = 0; i < keys.length; i++) {
+        var key = keys[i];
+        // #6574 in case the inject object is observed...
+        if (key === '__ob__') { continue }
+        var provideKey = inject[key].from;
+        var source = vm;
+        while (source) {
+          if (source._provided && hasOwn(source._provided, provideKey)) {
+            result[key] = source._provided[provideKey];
+            break
+          }
+          source = source.$parent;
+        }
+        if (!source) {
+          if ('default' in inject[key]) {
+            var provideDefault = inject[key].default;
+            result[key] = typeof provideDefault === 'function'
+              ? provideDefault.call(vm)
+              : provideDefault;
+          } else {
+            warn(("Injection \"" + key + "\" not found"), vm);
+          }
+        }
+      }
+      return result
+    }
+  }
+
+  /*  */
+
+
+
+  /**
+   * Runtime helper for resolving raw children VNodes into a slot object.
+   */
+  function resolveSlots (
+    children,
+    context
+  ) {
+    if (!children || !children.length) {
+      return {}
+    }
+    var slots = {};
+    for (var i = 0, l = children.length; i < l; i++) {
+      var child = children[i];
+      var data = child.data;
+      // remove slot attribute if the node is resolved as a Vue slot node
+      if (data && data.attrs && data.attrs.slot) {
+        delete data.attrs.slot;
+      }
+      // named slots should only be respected if the vnode was rendered in the
+      // same context.
+      if ((child.context === context || child.fnContext === context) &&
+        data && data.slot != null
+      ) {
+        var name = data.slot;
+        var slot = (slots[name] || (slots[name] = []));
+        if (child.tag === 'template') {
+          slot.push.apply(slot, child.children || []);
+        } else {
+          slot.push(child);
+        }
+      } else {
+        (slots.default || (slots.default = [])).push(child);
+      }
+    }
+    // ignore slots that contains only whitespace
+    for (var name$1 in slots) {
+      if (slots[name$1].every(isWhitespace)) {
+        delete slots[name$1];
+      }
+    }
+    return slots
+  }
+
+  function isWhitespace (node) {
+    return (node.isComment && !node.asyncFactory) || node.text === ' '
+  }
+
+  /*  */
+
+  function normalizeScopedSlots (
+    slots,
+    normalSlots,
+    prevSlots
+  ) {
+    var res;
+    var hasNormalSlots = Object.keys(normalSlots).length > 0;
+    var isStable = slots ? !!slots.$stable : !hasNormalSlots;
+    var key = slots && slots.$key;
+    if (!slots) {
+      res = {};
+    } else if (slots._normalized) {
+      // fast path 1: child component re-render only, parent did not change
+      return slots._normalized
+    } else if (
+      isStable &&
+      prevSlots &&
+      prevSlots !== emptyObject &&
+      key === prevSlots.$key &&
+      !hasNormalSlots &&
+      !prevSlots.$hasNormal
+    ) {
+      // fast path 2: stable scoped slots w/ no normal slots to proxy,
+      // only need to normalize once
+      return prevSlots
+    } else {
+      res = {};
+      for (var key$1 in slots) {
+        if (slots[key$1] && key$1[0] !== '$') {
+          res[key$1] = normalizeScopedSlot(normalSlots, key$1, slots[key$1]);
+        }
+      }
+    }
+    // expose normal slots on scopedSlots
+    for (var key$2 in normalSlots) {
+      if (!(key$2 in res)) {
+        res[key$2] = proxyNormalSlot(normalSlots, key$2);
+      }
+    }
+    // avoriaz seems to mock a non-extensible $scopedSlots object
+    // and when that is passed down this would cause an error
+    if (slots && Object.isExtensible(slots)) {
+      (slots)._normalized = res;
+    }
+    def(res, '$stable', isStable);
+    def(res, '$key', key);
+    def(res, '$hasNormal', hasNormalSlots);
+    return res
+  }
+
+  function normalizeScopedSlot(normalSlots, key, fn) {
+    var normalized = function () {
+      var res = arguments.length ? fn.apply(null, arguments) : fn({});
+      res = res && typeof res === 'object' && !Array.isArray(res)
+        ? [res] // single vnode
+        : normalizeChildren(res);
+      return res && (
+        res.length === 0 ||
+        (res.length === 1 && res[0].isComment) // #9658
+      ) ? undefined
+        : res
+    };
+    // this is a slot using the new v-slot syntax without scope. although it is
+    // compiled as a scoped slot, render fn users would expect it to be present
+    // on this.$slots because the usage is semantically a normal slot.
+    if (fn.proxy) {
+      Object.defineProperty(normalSlots, key, {
+        get: normalized,
+        enumerable: true,
+        configurable: true
+      });
+    }
+    return normalized
+  }
+
+  function proxyNormalSlot(slots, key) {
+    return function () { return slots[key]; }
+  }
+
+  /*  */
+
+  /**
+   * Runtime helper for rendering v-for lists.
+   */
+  function renderList (
+    val,
+    render
+  ) {
+    var ret, i, l, keys, key;
+    if (Array.isArray(val) || typeof val === 'string') {
+      ret = new Array(val.length);
+      for (i = 0, l = val.length; i < l; i++) {
+        ret[i] = render(val[i], i);
+      }
+    } else if (typeof val === 'number') {
+      ret = new Array(val);
+      for (i = 0; i < val; i++) {
+        ret[i] = render(i + 1, i);
+      }
+    } else if (isObject(val)) {
+      if (hasSymbol && val[Symbol.iterator]) {
+        ret = [];
+        var iterator = val[Symbol.iterator]();
+        var result = iterator.next();
+        while (!result.done) {
+          ret.push(render(result.value, ret.length));
+          result = iterator.next();
+        }
+      } else {
+        keys = Object.keys(val);
+        ret = new Array(keys.length);
+        for (i = 0, l = keys.length; i < l; i++) {
+          key = keys[i];
+          ret[i] = render(val[key], key, i);
+        }
+      }
+    }
+    if (!isDef(ret)) {
+      ret = [];
+    }
+    (ret)._isVList = true;
+    return ret
+  }
+
+  /*  */
+
+  /**
+   * Runtime helper for rendering <slot>
+   */
+  function renderSlot (
+    name,
+    fallback,
+    props,
+    bindObject
+  ) {
+    var scopedSlotFn = this.$scopedSlots[name];
+    var nodes;
+    if (scopedSlotFn) { // scoped slot
+      props = props || {};
+      if (bindObject) {
+        if (!isObject(bindObject)) {
+          warn(
+            'slot v-bind without argument expects an Object',
+            this
+          );
+        }
+        props = extend(extend({}, bindObject), props);
+      }
+      nodes = scopedSlotFn(props) || fallback;
+    } else {
+      nodes = this.$slots[name] || fallback;
+    }
+
+    var target = props && props.slot;
+    if (target) {
+      return this.$createElement('template', { slot: target }, nodes)
+    } else {
+      return nodes
+    }
+  }
+
+  /*  */
+
+  /**
+   * Runtime helper for resolving filters
+   */
+  function resolveFilter (id) {
+    return resolveAsset(this.$options, 'filters', id, true) || identity
+  }
+
+  /*  */
+
+  function isKeyNotMatch (expect, actual) {
+    if (Array.isArray(expect)) {
+      return expect.indexOf(actual) === -1
+    } else {
+      return expect !== actual
+    }
+  }
+
+  /**
+   * Runtime helper for checking keyCodes from config.
+   * exposed as Vue.prototype._k
+   * passing in eventKeyName as last argument separately for backwards compat
+   */
+  function checkKeyCodes (
+    eventKeyCode,
+    key,
+    builtInKeyCode,
+    eventKeyName,
+    builtInKeyName
+  ) {
+    var mappedKeyCode = config.keyCodes[key] || builtInKeyCode;
+    if (builtInKeyName && eventKeyName && !config.keyCodes[key]) {
+      return isKeyNotMatch(builtInKeyName, eventKeyName)
+    } else if (mappedKeyCode) {
+      return isKeyNotMatch(mappedKeyCode, eventKeyCode)
+    } else if (eventKeyName) {
+      return hyphenate(eventKeyName) !== key
+    }
+  }
+
+  /*  */
+
+  /**
+   * Runtime helper for merging v-bind="object" into a VNode's data.
+   */
+  function bindObjectProps (
+    data,
+    tag,
+    value,
+    asProp,
+    isSync
+  ) {
+    if (value) {
+      if (!isObject(value)) {
+        warn(
+          'v-bind without argument expects an Object or Array value',
+          this
+        );
+      } else {
+        if (Array.isArray(value)) {
+          value = toObject(value);
+        }
+        var hash;
+        var loop = function ( key ) {
+          if (
+            key === 'class' ||
+            key === 'style' ||
+            isReservedAttribute(key)
+          ) {
+            hash = data;
+          } else {
+            var type = data.attrs && data.attrs.type;
+            hash = asProp || config.mustUseProp(tag, type, key)
+              ? data.domProps || (data.domProps = {})
+              : data.attrs || (data.attrs = {});
+          }
+          var camelizedKey = camelize(key);
+          var hyphenatedKey = hyphenate(key);
+          if (!(camelizedKey in hash) && !(hyphenatedKey in hash)) {
+            hash[key] = value[key];
+
+            if (isSync) {
+              var on = data.on || (data.on = {});
+              on[("update:" + key)] = function ($event) {
+                value[key] = $event;
+              };
+            }
+          }
+        };
+
+        for (var key in value) loop( key );
+      }
+    }
+    return data
+  }
+
+  /*  */
+
+  /**
+   * Runtime helper for rendering static trees.
+   */
+  function renderStatic (
+    index,
+    isInFor
+  ) {
+    var cached = this._staticTrees || (this._staticTrees = []);
+    var tree = cached[index];
+    // if has already-rendered static tree and not inside v-for,
+    // we can reuse the same tree.
+    if (tree && !isInFor) {
+      return tree
+    }
+    // otherwise, render a fresh tree.
+    tree = cached[index] = this.$options.staticRenderFns[index].call(
+      this._renderProxy,
+      null,
+      this // for render fns generated for functional component templates
+    );
+    markStatic(tree, ("__static__" + index), false);
+    return tree
+  }
+
+  /**
+   * Runtime helper for v-once.
+   * Effectively it means marking the node as static with a unique key.
+   */
+  function markOnce (
+    tree,
+    index,
+    key
+  ) {
+    markStatic(tree, ("__once__" + index + (key ? ("_" + key) : "")), true);
+    return tree
+  }
+
+  function markStatic (
+    tree,
+    key,
+    isOnce
+  ) {
+    if (Array.isArray(tree)) {
+      for (var i = 0; i < tree.length; i++) {
+        if (tree[i] && typeof tree[i] !== 'string') {
+          markStaticNode(tree[i], (key + "_" + i), isOnce);
+        }
+      }
+    } else {
+      markStaticNode(tree, key, isOnce);
+    }
+  }
+
+  function markStaticNode (node, key, isOnce) {
+    node.isStatic = true;
+    node.key = key;
+    node.isOnce = isOnce;
+  }
+
+  /*  */
+
+  function bindObjectListeners (data, value) {
+    if (value) {
+      if (!isPlainObject(value)) {
+        warn(
+          'v-on without argument expects an Object value',
+          this
+        );
+      } else {
+        var on = data.on = data.on ? extend({}, data.on) : {};
+        for (var key in value) {
+          var existing = on[key];
+          var ours = value[key];
+          on[key] = existing ? [].concat(existing, ours) : ours;
+        }
+      }
+    }
+    return data
+  }
+
+  /*  */
+
+  function resolveScopedSlots (
+    fns, // see flow/vnode
+    res,
+    // the following are added in 2.6
+    hasDynamicKeys,
+    contentHashKey
+  ) {
+    res = res || { $stable: !hasDynamicKeys };
+    for (var i = 0; i < fns.length; i++) {
+      var slot = fns[i];
+      if (Array.isArray(slot)) {
+        resolveScopedSlots(slot, res, hasDynamicKeys);
+      } else if (slot) {
+        // marker for reverse proxying v-slot without scope on this.$slots
+        if (slot.proxy) {
+          slot.fn.proxy = true;
+        }
+        res[slot.key] = slot.fn;
+      }
+    }
+    if (contentHashKey) {
+      (res).$key = contentHashKey;
+    }
+    return res
+  }
+
+  /*  */
+
+  function bindDynamicKeys (baseObj, values) {
+    for (var i = 0; i < values.length; i += 2) {
+      var key = values[i];
+      if (typeof key === 'string' && key) {
+        baseObj[values[i]] = values[i + 1];
+      } else if (key !== '' && key !== null) {
+        // null is a special value for explicitly removing a binding
+        warn(
+          ("Invalid value for dynamic directive argument (expected string or null): " + key),
+          this
+        );
+      }
+    }
+    return baseObj
+  }
+
+  // helper to dynamically append modifier runtime markers to event names.
+  // ensure only append when value is already string, otherwise it will be cast
+  // to string and cause the type check to miss.
+  function prependModifier (value, symbol) {
+    return typeof value === 'string' ? symbol + value : value
+  }
+
+  /*  */
+
+  function installRenderHelpers (target) {
+    target._o = markOnce;
+    target._n = toNumber;
+    target._s = toString;
+    target._l = renderList;
+    target._t = renderSlot;
+    target._q = looseEqual;
+    target._i = looseIndexOf;
+    target._m = renderStatic;
+    target._f = resolveFilter;
+    target._k = checkKeyCodes;
+    target._b = bindObjectProps;
+    target._v = createTextVNode;
+    target._e = createEmptyVNode;
+    target._u = resolveScopedSlots;
+    target._g = bindObjectListeners;
+    target._d = bindDynamicKeys;
+    target._p = prependModifier;
+  }
+
+  /*  */
+
+  function FunctionalRenderContext (
+    data,
+    props,
+    children,
+    parent,
+    Ctor
+  ) {
+    var this$1 = this;
+
+    var options = Ctor.options;
+    // ensure the createElement function in functional components
+    // gets a unique context - this is necessary for correct named slot check
+    var contextVm;
+    if (hasOwn(parent, '_uid')) {
+      contextVm = Object.create(parent);
+      // $flow-disable-line
+      contextVm._original = parent;
+    } else {
+      // the context vm passed in is a functional context as well.
+      // in this case we want to make sure we are able to get a hold to the
+      // real context instance.
+      contextVm = parent;
+      // $flow-disable-line
+      parent = parent._original;
+    }
+    var isCompiled = isTrue(options._compiled);
+    var needNormalization = !isCompiled;
+
+    this.data = data;
+    this.props = props;
+    this.children = children;
+    this.parent = parent;
+    this.listeners = data.on || emptyObject;
+    this.injections = resolveInject(options.inject, parent);
+    this.slots = function () {
+      if (!this$1.$slots) {
+        normalizeScopedSlots(
+          data.scopedSlots,
+          this$1.$slots = resolveSlots(children, parent)
+        );
+      }
+      return this$1.$slots
+    };
+
+    Object.defineProperty(this, 'scopedSlots', ({
+      enumerable: true,
+      get: function get () {
+        return normalizeScopedSlots(data.scopedSlots, this.slots())
+      }
+    }));
+
+    // support for compiled functional template
+    if (isCompiled) {
+      // exposing $options for renderStatic()
+      this.$options = options;
+      // pre-resolve slots for renderSlot()
+      this.$slots = this.slots();
+      this.$scopedSlots = normalizeScopedSlots(data.scopedSlots, this.$slots);
+    }
+
+    if (options._scopeId) {
+      this._c = function (a, b, c, d) {
+        var vnode = createElement(contextVm, a, b, c, d, needNormalization);
+        if (vnode && !Array.isArray(vnode)) {
+          vnode.fnScopeId = options._scopeId;
+          vnode.fnContext = parent;
+        }
+        return vnode
+      };
+    } else {
+      this._c = function (a, b, c, d) { return createElement(contextVm, a, b, c, d, needNormalization); };
+    }
+  }
+
+  installRenderHelpers(FunctionalRenderContext.prototype);
+
+  function createFunctionalComponent (
+    Ctor,
+    propsData,
+    data,
+    contextVm,
+    children
+  ) {
+    var options = Ctor.options;
+    var props = {};
+    var propOptions = options.props;
+    if (isDef(propOptions)) {
+      for (var key in propOptions) {
+        props[key] = validateProp(key, propOptions, propsData || emptyObject);
+      }
+    } else {
+      if (isDef(data.attrs)) { mergeProps(props, data.attrs); }
+      if (isDef(data.props)) { mergeProps(props, data.props); }
+    }
+
+    var renderContext = new FunctionalRenderContext(
+      data,
+      props,
+      children,
+      contextVm,
+      Ctor
+    );
+
+    var vnode = options.render.call(null, renderContext._c, renderContext);
+
+    if (vnode instanceof VNode) {
+      return cloneAndMarkFunctionalResult(vnode, data, renderContext.parent, options, renderContext)
+    } else if (Array.isArray(vnode)) {
+      var vnodes = normalizeChildren(vnode) || [];
+      var res = new Array(vnodes.length);
+      for (var i = 0; i < vnodes.length; i++) {
+        res[i] = cloneAndMarkFunctionalResult(vnodes[i], data, renderContext.parent, options, renderContext);
+      }
+      return res
+    }
+  }
+
+  function cloneAndMarkFunctionalResult (vnode, data, contextVm, options, renderContext) {
+    // #7817 clone node before setting fnContext, otherwise if the node is reused
+    // (e.g. it was from a cached normal slot) the fnContext causes named slots
+    // that should not be matched to match.
+    var clone = cloneVNode(vnode);
+    clone.fnContext = contextVm;
+    clone.fnOptions = options;
+    {
+      (clone.devtoolsMeta = clone.devtoolsMeta || {}).renderContext = renderContext;
+    }
+    if (data.slot) {
+      (clone.data || (clone.data = {})).slot = data.slot;
+    }
+    return clone
+  }
+
+  function mergeProps (to, from) {
+    for (var key in from) {
+      to[camelize(key)] = from[key];
+    }
+  }
+
+  /*  */
+
+  /*  */
+
+  /*  */
+
+  /*  */
+
+  // inline hooks to be invoked on component VNodes during patch
+  var componentVNodeHooks = {
+    init: function init (vnode, hydrating) {
+      if (
+        vnode.componentInstance &&
+        !vnode.componentInstance._isDestroyed &&
+        vnode.data.keepAlive
+      ) {
+        // kept-alive components, treat as a patch
+        var mountedNode = vnode; // work around flow
+        componentVNodeHooks.prepatch(mountedNode, mountedNode);
+      } else {
+        var child = vnode.componentInstance = createComponentInstanceForVnode(
+          vnode,
+          activeInstance
+        );
+        child.$mount(hydrating ? vnode.elm : undefined, hydrating);
+      }
+    },
+
+    prepatch: function prepatch (oldVnode, vnode) {
+      var options = vnode.componentOptions;
+      var child = vnode.componentInstance = oldVnode.componentInstance;
+      updateChildComponent(
+        child,
+        options.propsData, // updated props
+        options.listeners, // updated listeners
+        vnode, // new parent vnode
+        options.children // new children
+      );
+    },
+
+    insert: function insert (vnode) {
+      var context = vnode.context;
+      var componentInstance = vnode.componentInstance;
+      if (!componentInstance._isMounted) {
+        componentInstance._isMounted = true;
+        callHook(componentInstance, 'mounted');
+      }
+      if (vnode.data.keepAlive) {
+        if (context._isMounted) {
+          // vue-router#1212
+          // During updates, a kept-alive component's child components may
+          // change, so directly walking the tree here may call activated hooks
+          // on incorrect children. Instead we push them into a queue which will
+          // be processed after the whole patch process ended.
+          queueActivatedComponent(componentInstance);
+        } else {
+          activateChildComponent(componentInstance, true /* direct */);
+        }
+      }
+    },
+
+    destroy: function destroy (vnode) {
+      var componentInstance = vnode.componentInstance;
+      if (!componentInstance._isDestroyed) {
+        if (!vnode.data.keepAlive) {
+          componentInstance.$destroy();
+        } else {
+          deactivateChildComponent(componentInstance, true /* direct */);
+        }
+      }
+    }
+  };
+
+  var hooksToMerge = Object.keys(componentVNodeHooks);
+
+  function createComponent (
+    Ctor,
+    data,
+    context,
+    children,
+    tag
+  ) {
+    if (isUndef(Ctor)) {
+      return
+    }
+
+    var baseCtor = context.$options._base;
+
+    // plain options object: turn it into a constructor
+    if (isObject(Ctor)) {
+      Ctor = baseCtor.extend(Ctor);
+    }
+
+    // if at this stage it's not a constructor or an async component factory,
+    // reject.
+    if (typeof Ctor !== 'function') {
+      {
+        warn(("Invalid Component definition: " + (String(Ctor))), context);
+      }
+      return
+    }
+
+    // async component
+    var asyncFactory;
+    if (isUndef(Ctor.cid)) {
+      asyncFactory = Ctor;
+      Ctor = resolveAsyncComponent(asyncFactory, baseCtor);
+      if (Ctor === undefined) {
+        // return a placeholder node for async component, which is rendered
+        // as a comment node but preserves all the raw information for the node.
+        // the information will be used for async server-rendering and hydration.
+        return createAsyncPlaceholder(
+          asyncFactory,
+          data,
+          context,
+          children,
+          tag
+        )
+      }
+    }
+
+    data = data || {};
+
+    // resolve constructor options in case global mixins are applied after
+    // component constructor creation
+    resolveConstructorOptions(Ctor);
+
+    // transform component v-model data into props & events
+    if (isDef(data.model)) {
+      transformModel(Ctor.options, data);
+    }
+
+    // extract props
+    var propsData = extractPropsFromVNodeData(data, Ctor, tag);
+
+    // functional component
+    if (isTrue(Ctor.options.functional)) {
+      return createFunctionalComponent(Ctor, propsData, data, context, children)
+    }
+
+    // extract listeners, since these needs to be treated as
+    // child component listeners instead of DOM listeners
+    var listeners = data.on;
+    // replace with listeners with .native modifier
+    // so it gets processed during parent component patch.
+    data.on = data.nativeOn;
+
+    if (isTrue(Ctor.options.abstract)) {
+      // abstract components do not keep anything
+      // other than props & listeners & slot
+
+      // work around flow
+      var slot = data.slot;
+      data = {};
+      if (slot) {
+        data.slot = slot;
+      }
+    }
+
+    // install component management hooks onto the placeholder node
+    installComponentHooks(data);
+
+    // return a placeholder vnode
+    var name = Ctor.options.name || tag;
+    var vnode = new VNode(
+      ("vue-component-" + (Ctor.cid) + (name ? ("-" + name) : '')),
+      data, undefined, undefined, undefined, context,
+      { Ctor: Ctor, propsData: propsData, listeners: listeners, tag: tag, children: children },
+      asyncFactory
+    );
+
+    return vnode
+  }
+
+  function createComponentInstanceForVnode (
+    vnode, // we know it's MountedComponentVNode but flow doesn't
+    parent // activeInstance in lifecycle state
+  ) {
+    var options = {
+      _isComponent: true,
+      _parentVnode: vnode,
+      parent: parent
+    };
+    // check inline-template render functions
+    var inlineTemplate = vnode.data.inlineTemplate;
+    if (isDef(inlineTemplate)) {
+      options.render = inlineTemplate.render;
+      options.staticRenderFns = inlineTemplate.staticRenderFns;
+    }
+    return new vnode.componentOptions.Ctor(options)
+  }
+
+  function installComponentHooks (data) {
+    var hooks = data.hook || (data.hook = {});
+    for (var i = 0; i < hooksToMerge.length; i++) {
+      var key = hooksToMerge[i];
+      var existing = hooks[key];
+      var toMerge = componentVNodeHooks[key];
+      if (existing !== toMerge && !(existing && existing._merged)) {
+        hooks[key] = existing ? mergeHook$1(toMerge, existing) : toMerge;
+      }
+    }
+  }
+
+  function mergeHook$1 (f1, f2) {
+    var merged = function (a, b) {
+      // flow complains about extra args which is why we use any
+      f1(a, b);
+      f2(a, b);
+    };
+    merged._merged = true;
+    return merged
+  }
+
+  // transform component v-model info (value and callback) into
+  // prop and event handler respectively.
+  function transformModel (options, data) {
+    var prop = (options.model && options.model.prop) || 'value';
+    var event = (options.model && options.model.event) || 'input'
+    ;(data.attrs || (data.attrs = {}))[prop] = data.model.value;
+    var on = data.on || (data.on = {});
+    var existing = on[event];
+    var callback = data.model.callback;
+    if (isDef(existing)) {
+      if (
+        Array.isArray(existing)
+          ? existing.indexOf(callback) === -1
+          : existing !== callback
+      ) {
+        on[event] = [callback].concat(existing);
+      }
+    } else {
+      on[event] = callback;
+    }
+  }
+
+  /*  */
+
+  var SIMPLE_NORMALIZE = 1;
+  var ALWAYS_NORMALIZE = 2;
+
+  // wrapper function for providing a more flexible interface
+  // without getting yelled at by flow
+  function createElement (
+    context,
+    tag,
+    data,
+    children,
+    normalizationType,
+    alwaysNormalize
+  ) {
+    if (Array.isArray(data) || isPrimitive(data)) {
+      normalizationType = children;
+      children = data;
+      data = undefined;
+    }
+    if (isTrue(alwaysNormalize)) {
+      normalizationType = ALWAYS_NORMALIZE;
+    }
+    return _createElement(context, tag, data, children, normalizationType)
+  }
+
+  function _createElement (
+    context,
+    tag,
+    data,
+    children,
+    normalizationType
+  ) {
+    if (isDef(data) && isDef((data).__ob__)) {
+      warn(
+        "Avoid using observed data object as vnode data: " + (JSON.stringify(data)) + "\n" +
+        'Always create fresh vnode data objects in each render!',
+        context
+      );
+      return createEmptyVNode()
+    }
+    // object syntax in v-bind
+    if (isDef(data) && isDef(data.is)) {
+      tag = data.is;
+    }
+    if (!tag) {
+      // in case of component :is set to falsy value
+      return createEmptyVNode()
+    }
+    // warn against non-primitive key
+    if (isDef(data) && isDef(data.key) && !isPrimitive(data.key)
+    ) {
+      {
+        warn(
+          'Avoid using non-primitive value as key, ' +
+          'use string/number value instead.',
+          context
+        );
+      }
+    }
+    // support single function children as default scoped slot
+    if (Array.isArray(children) &&
+      typeof children[0] === 'function'
+    ) {
+      data = data || {};
+      data.scopedSlots = { default: children[0] };
+      children.length = 0;
+    }
+    if (normalizationType === ALWAYS_NORMALIZE) {
+      children = normalizeChildren(children);
+    } else if (normalizationType === SIMPLE_NORMALIZE) {
+      children = simpleNormalizeChildren(children);
+    }
+    var vnode, ns;
+    if (typeof tag === 'string') {
+      var Ctor;
+      ns = (context.$vnode && context.$vnode.ns) || config.getTagNamespace(tag);
+      if (config.isReservedTag(tag)) {
+        // platform built-in elements
+        if (isDef(data) && isDef(data.nativeOn)) {
+          warn(
+            ("The .native modifier for v-on is only valid on components but it was used on <" + tag + ">."),
+            context
+          );
+        }
+        vnode = new VNode(
+          config.parsePlatformTagName(tag), data, children,
+          undefined, undefined, context
+        );
+      } else if ((!data || !data.pre) && isDef(Ctor = resolveAsset(context.$options, 'components', tag))) {
+        // component
+        vnode = createComponent(Ctor, data, context, children, tag);
+      } else {
+        // unknown or unlisted namespaced elements
+        // check at runtime because it may get assigned a namespace when its
+        // parent normalizes children
+        vnode = new VNode(
+          tag, data, children,
+          undefined, undefined, context
+        );
+      }
+    } else {
+      // direct component options / constructor
+      vnode = createComponent(tag, data, context, children);
+    }
+    if (Array.isArray(vnode)) {
+      return vnode
+    } else if (isDef(vnode)) {
+      if (isDef(ns)) { applyNS(vnode, ns); }
+      if (isDef(data)) { registerDeepBindings(data); }
+      return vnode
+    } else {
+      return createEmptyVNode()
+    }
+  }
+
+  function applyNS (vnode, ns, force) {
+    vnode.ns = ns;
+    if (vnode.tag === 'foreignObject') {
+      // use default namespace inside foreignObject
+      ns = undefined;
+      force = true;
+    }
+    if (isDef(vnode.children)) {
+      for (var i = 0, l = vnode.children.length; i < l; i++) {
+        var child = vnode.children[i];
+        if (isDef(child.tag) && (
+          isUndef(child.ns) || (isTrue(force) && child.tag !== 'svg'))) {
+          applyNS(child, ns, force);
+        }
+      }
+    }
+  }
+
+  // ref #5318
+  // necessary to ensure parent re-render when deep bindings like :style and
+  // :class are used on slot nodes
+  function registerDeepBindings (data) {
+    if (isObject(data.style)) {
+      traverse(data.style);
+    }
+    if (isObject(data.class)) {
+      traverse(data.class);
+    }
+  }
+
+  /*  */
+
+  function initRender (vm) {
+    vm._vnode = null; // the root of the child tree
+    vm._staticTrees = null; // v-once cached trees
+    var options = vm.$options;
+    var parentVnode = vm.$vnode = options._parentVnode; // the placeholder node in parent tree
+    var renderContext = parentVnode && parentVnode.context;
+    vm.$slots = resolveSlots(options._renderChildren, renderContext);
+    vm.$scopedSlots = emptyObject;
+    // bind the createElement fn to this instance
+    // so that we get proper render context inside it.
+    // args order: tag, data, children, normalizationType, alwaysNormalize
+    // internal version is used by render functions compiled from templates
+    vm._c = function (a, b, c, d) { return createElement(vm, a, b, c, d, false); };
+    // normalization is always applied for the public version, used in
+    // user-written render functions.
+    vm.$createElement = function (a, b, c, d) { return createElement(vm, a, b, c, d, true); };
+
+    // $attrs & $listeners are exposed for easier HOC creation.
+    // they need to be reactive so that HOCs using them are always updated
+    var parentData = parentVnode && parentVnode.data;
+
+    /* istanbul ignore else */
+    {
+      defineReactive$$1(vm, '$attrs', parentData && parentData.attrs || emptyObject, function () {
+        !isUpdatingChildComponent && warn("$attrs is readonly.", vm);
+      }, true);
+      defineReactive$$1(vm, '$listeners', options._parentListeners || emptyObject, function () {
+        !isUpdatingChildComponent && warn("$listeners is readonly.", vm);
+      }, true);
+    }
+  }
+
+  var currentRenderingInstance = null;
+
+  function renderMixin (Vue) {
+    // install runtime convenience helpers
+    installRenderHelpers(Vue.prototype);
+
+    Vue.prototype.$nextTick = function (fn) {
+      return nextTick(fn, this)
+    };
+
+    Vue.prototype._render = function () {
+      var vm = this;
+      var ref = vm.$options;
+      var render = ref.render;
+      var _parentVnode = ref._parentVnode;
+
+      if (_parentVnode) {
+        vm.$scopedSlots = normalizeScopedSlots(
+          _parentVnode.data.scopedSlots,
+          vm.$slots,
+          vm.$scopedSlots
+        );
+      }
+
+      // set parent vnode. this allows render functions to have access
+      // to the data on the placeholder node.
+      vm.$vnode = _parentVnode;
+      // render self
+      var vnode;
+      try {
+        // There's no need to maintain a stack because all render fns are called
+        // separately from one another. Nested component's render fns are called
+        // when parent component is patched.
+        currentRenderingInstance = vm;
+        vnode = render.call(vm._renderProxy, vm.$createElement);
+      } catch (e) {
+        handleError(e, vm, "render");
+        // return error render result,
+        // or previous vnode to prevent render error causing blank component
+        /* istanbul ignore else */
+        if (vm.$options.renderError) {
+          try {
+            vnode = vm.$options.renderError.call(vm._renderProxy, vm.$createElement, e);
+          } catch (e) {
+            handleError(e, vm, "renderError");
+            vnode = vm._vnode;
+          }
+        } else {
+          vnode = vm._vnode;
+        }
+      } finally {
+        currentRenderingInstance = null;
+      }
+      // if the returned array contains only a single node, allow it
+      if (Array.isArray(vnode) && vnode.length === 1) {
+        vnode = vnode[0];
+      }
+      // return empty vnode in case the render function errored out
+      if (!(vnode instanceof VNode)) {
+        if (Array.isArray(vnode)) {
+          warn(
+            'Multiple root nodes returned from render function. Render function ' +
+            'should return a single root node.',
+            vm
+          );
+        }
+        vnode = createEmptyVNode();
+      }
+      // set parent
+      vnode.parent = _parentVnode;
+      return vnode
+    };
+  }
+
+  /*  */
+
+  function ensureCtor (comp, base) {
+    if (
+      comp.__esModule ||
+      (hasSymbol && comp[Symbol.toStringTag] === 'Module')
+    ) {
+      comp = comp.default;
+    }
+    return isObject(comp)
+      ? base.extend(comp)
+      : comp
+  }
+
+  function createAsyncPlaceholder (
+    factory,
+    data,
+    context,
+    children,
+    tag
+  ) {
+    var node = createEmptyVNode();
+    node.asyncFactory = factory;
+    node.asyncMeta = { data: data, context: context, children: children, tag: tag };
+    return node
+  }
+
+  function resolveAsyncComponent (
+    factory,
+    baseCtor
+  ) {
+    if (isTrue(factory.error) && isDef(factory.errorComp)) {
+      return factory.errorComp
+    }
+
+    if (isDef(factory.resolved)) {
+      return factory.resolved
+    }
+
+    var owner = currentRenderingInstance;
+    if (owner && isDef(factory.owners) && factory.owners.indexOf(owner) === -1) {
+      // already pending
+      factory.owners.push(owner);
+    }
+
+    if (isTrue(factory.loading) && isDef(factory.loadingComp)) {
+      return factory.loadingComp
+    }
+
+    if (owner && !isDef(factory.owners)) {
+      var owners = factory.owners = [owner];
+      var sync = true;
+      var timerLoading = null;
+      var timerTimeout = null
+
+      ;(owner).$on('hook:destroyed', function () { return remove(owners, owner); });
+
+      var forceRender = function (renderCompleted) {
+        for (var i = 0, l = owners.length; i < l; i++) {
+          (owners[i]).$forceUpdate();
+        }
+
+        if (renderCompleted) {
+          owners.length = 0;
+          if (timerLoading !== null) {
+            clearTimeout(timerLoading);
+            timerLoading = null;
+          }
+          if (timerTimeout !== null) {
+            clearTimeout(timerTimeout);
+            timerTimeout = null;
+          }
+        }
+      };
+
+      var resolve = once(function (res) {
+        // cache resolved
+        factory.resolved = ensureCtor(res, baseCtor);
+        // invoke callbacks only if this is not a synchronous resolve
+        // (async resolves are shimmed as synchronous during SSR)
+        if (!sync) {
+          forceRender(true);
+        } else {
+          owners.length = 0;
+        }
+      });
+
+      var reject = once(function (reason) {
+        warn(
+          "Failed to resolve async component: " + (String(factory)) +
+          (reason ? ("\nReason: " + reason) : '')
+        );
+        if (isDef(factory.errorComp)) {
+          factory.error = true;
+          forceRender(true);
+        }
+      });
+
+      var res = factory(resolve, reject);
+
+      if (isObject(res)) {
+        if (isPromise(res)) {
+          // () => Promise
+          if (isUndef(factory.resolved)) {
+            res.then(resolve, reject);
+          }
+        } else if (isPromise(res.component)) {
+          res.component.then(resolve, reject);
+
+          if (isDef(res.error)) {
+            factory.errorComp = ensureCtor(res.error, baseCtor);
+          }
+
+          if (isDef(res.loading)) {
+            factory.loadingComp = ensureCtor(res.loading, baseCtor);
+            if (res.delay === 0) {
+              factory.loading = true;
+            } else {
+              timerLoading = setTimeout(function () {
+                timerLoading = null;
+                if (isUndef(factory.resolved) && isUndef(factory.error)) {
+                  factory.loading = true;
+                  forceRender(false);
+                }
+              }, res.delay || 200);
+            }
+          }
+
+          if (isDef(res.timeout)) {
+            timerTimeout = setTimeout(function () {
+              timerTimeout = null;
+              if (isUndef(factory.resolved)) {
+                reject(
+                  "timeout (" + (res.timeout) + "ms)"
+                );
+              }
+            }, res.timeout);
+          }
+        }
+      }
+
+      sync = false;
+      // return in case resolved synchronously
+      return factory.loading
+        ? factory.loadingComp
+        : factory.resolved
+    }
+  }
+
+  /*  */
+
+  function isAsyncPlaceholder (node) {
+    return node.isComment && node.asyncFactory
+  }
+
+  /*  */
+
+  function getFirstComponentChild (children) {
+    if (Array.isArray(children)) {
+      for (var i = 0; i < children.length; i++) {
+        var c = children[i];
+        if (isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) {
+          return c
+        }
+      }
+    }
+  }
+
+  /*  */
+
+  /*  */
+
+  function initEvents (vm) {
+    vm._events = Object.create(null);
+    vm._hasHookEvent = false;
+    // init parent attached events
+    var listeners = vm.$options._parentListeners;
+    if (listeners) {
+      updateComponentListeners(vm, listeners);
+    }
+  }
+
+  var target;
+
+  function add (event, fn) {
+    target.$on(event, fn);
+  }
+
+  function remove$1 (event, fn) {
+    target.$off(event, fn);
+  }
+
+  function createOnceHandler (event, fn) {
+    var _target = target;
+    return function onceHandler () {
+      var res = fn.apply(null, arguments);
+      if (res !== null) {
+        _target.$off(event, onceHandler);
+      }
+    }
+  }
+
+  function updateComponentListeners (
+    vm,
+    listeners,
+    oldListeners
+  ) {
+    target = vm;
+    updateListeners(listeners, oldListeners || {}, add, remove$1, createOnceHandler, vm);
+    target = undefined;
+  }
+
+  function eventsMixin (Vue) {
+    var hookRE = /^hook:/;
+    Vue.prototype.$on = function (event, fn) {
+      var vm = this;
+      if (Array.isArray(event)) {
+        for (var i = 0, l = event.length; i < l; i++) {
+          vm.$on(event[i], fn);
+        }
+      } else {
+        (vm._events[event] || (vm._events[event] = [])).push(fn);
+        // optimize hook:event cost by using a boolean flag marked at registration
+        // instead of a hash lookup
+        if (hookRE.test(event)) {
+          vm._hasHookEvent = true;
+        }
+      }
+      return vm
+    };
+
+    Vue.prototype.$once = function (event, fn) {
+      var vm = this;
+      function on () {
+        vm.$off(event, on);
+        fn.apply(vm, arguments);
+      }
+      on.fn = fn;
+      vm.$on(event, on);
+      return vm
+    };
+
+    Vue.prototype.$off = function (event, fn) {
+      var vm = this;
+      // all
+      if (!arguments.length) {
+        vm._events = Object.create(null);
+        return vm
+      }
+      // array of events
+      if (Array.isArray(event)) {
+        for (var i$1 = 0, l = event.length; i$1 < l; i$1++) {
+          vm.$off(event[i$1], fn);
+        }
+        return vm
+      }
+      // specific event
+      var cbs = vm._events[event];
+      if (!cbs) {
+        return vm
+      }
+      if (!fn) {
+        vm._events[event] = null;
+        return vm
+      }
+      // specific handler
+      var cb;
+      var i = cbs.length;
+      while (i--) {
+        cb = cbs[i];
+        if (cb === fn || cb.fn === fn) {
+          cbs.splice(i, 1);
+          break
+        }
+      }
+      return vm
+    };
+
+    Vue.prototype.$emit = function (event) {
+      var vm = this;
+      {
+        var lowerCaseEvent = event.toLowerCase();
+        if (lowerCaseEvent !== event && vm._events[lowerCaseEvent]) {
+          tip(
+            "Event \"" + lowerCaseEvent + "\" is emitted in component " +
+            (formatComponentName(vm)) + " but the handler is registered for \"" + event + "\". " +
+            "Note that HTML attributes are case-insensitive and you cannot use " +
+            "v-on to listen to camelCase events when using in-DOM templates. " +
+            "You should probably use \"" + (hyphenate(event)) + "\" instead of \"" + event + "\"."
+          );
+        }
+      }
+      var cbs = vm._events[event];
+      if (cbs) {
+        cbs = cbs.length > 1 ? toArray(cbs) : cbs;
+        var args = toArray(arguments, 1);
+        var info = "event handler for \"" + event + "\"";
+        for (var i = 0, l = cbs.length; i < l; i++) {
+          invokeWithErrorHandling(cbs[i], vm, args, vm, info);
+        }
+      }
+      return vm
+    };
+  }
+
+  /*  */
+
+  var activeInstance = null;
+  var isUpdatingChildComponent = false;
+
+  function setActiveInstance(vm) {
+    var prevActiveInstance = activeInstance;
+    activeInstance = vm;
+    return function () {
+      activeInstance = prevActiveInstance;
+    }
+  }
+
+  function initLifecycle (vm) {
+    var options = vm.$options;
+
+    // locate first non-abstract parent
+    var parent = options.parent;
+    if (parent && !options.abstract) {
+      while (parent.$options.abstract && parent.$parent) {
+        parent = parent.$parent;
+      }
+      parent.$children.push(vm);
+    }
+
+    vm.$parent = parent;
+    vm.$root = parent ? parent.$root : vm;
+
+    vm.$children = [];
+    vm.$refs = {};
+
+    vm._watcher = null;
+    vm._inactive = null;
+    vm._directInactive = false;
+    vm._isMounted = false;
+    vm._isDestroyed = false;
+    vm._isBeingDestroyed = false;
+  }
+
+  function lifecycleMixin (Vue) {
+    Vue.prototype._update = function (vnode, hydrating) {
+      var vm = this;
+      var prevEl = vm.$el;
+      var prevVnode = vm._vnode;
+      var restoreActiveInstance = setActiveInstance(vm);
+      vm._vnode = vnode;
+      // Vue.prototype.__patch__ is injected in entry points
+      // based on the rendering backend used.
+      if (!prevVnode) {
+        // initial render
+        vm.$el = vm.__patch__(vm.$el, vnode, hydrating, false /* removeOnly */);
+      } else {
+        // updates
+        vm.$el = vm.__patch__(prevVnode, vnode);
+      }
+      restoreActiveInstance();
+      // update __vue__ reference
+      if (prevEl) {
+        prevEl.__vue__ = null;
+      }
+      if (vm.$el) {
+        vm.$el.__vue__ = vm;
+      }
+      // if parent is an HOC, update its $el as well
+      if (vm.$vnode && vm.$parent && vm.$vnode === vm.$parent._vnode) {
+        vm.$parent.$el = vm.$el;
+      }
+      // updated hook is called by the scheduler to ensure that children are
+      // updated in a parent's updated hook.
+    };
+
+    Vue.prototype.$forceUpdate = function () {
+      var vm = this;
+      if (vm._watcher) {
+        vm._watcher.update();
+      }
+    };
+
+    Vue.prototype.$destroy = function () {
+      var vm = this;
+      if (vm._isBeingDestroyed) {
+        return
+      }
+      callHook(vm, 'beforeDestroy');
+      vm._isBeingDestroyed = true;
+      // remove self from parent
+      var parent = vm.$parent;
+      if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) {
+        remove(parent.$children, vm);
+      }
+      // teardown watchers
+      if (vm._watcher) {
+        vm._watcher.teardown();
+      }
+      var i = vm._watchers.length;
+      while (i--) {
+        vm._watchers[i].teardown();
+      }
+      // remove reference from data ob
+      // frozen object may not have observer.
+      if (vm._data.__ob__) {
+        vm._data.__ob__.vmCount--;
+      }
+      // call the last hook...
+      vm._isDestroyed = true;
+      // invoke destroy hooks on current rendered tree
+      vm.__patch__(vm._vnode, null);
+      // fire destroyed hook
+      callHook(vm, 'destroyed');
+      // turn off all instance listeners.
+      vm.$off();
+      // remove __vue__ reference
+      if (vm.$el) {
+        vm.$el.__vue__ = null;
+      }
+      // release circular reference (#6759)
+      if (vm.$vnode) {
+        vm.$vnode.parent = null;
+      }
+    };
+  }
+
+  function mountComponent (
+    vm,
+    el,
+    hydrating
+  ) {
+    vm.$el = el;
+    if (!vm.$options.render) {
+      vm.$options.render = createEmptyVNode;
+      {
+        /* istanbul ignore if */
+        if ((vm.$options.template && vm.$options.template.charAt(0) !== '#') ||
+          vm.$options.el || el) {
+          warn(
+            'You are using the runtime-only build of Vue where the template ' +
+            'compiler is not available. Either pre-compile the templates into ' +
+            'render functions, or use the compiler-included build.',
+            vm
+          );
+        } else {
+          warn(
+            'Failed to mount component: template or render function not defined.',
+            vm
+          );
+        }
+      }
+    }
+    callHook(vm, 'beforeMount');
+
+    var updateComponent;
+    /* istanbul ignore if */
+    if (config.performance && mark) {
+      updateComponent = function () {
+        var name = vm._name;
+        var id = vm._uid;
+        var startTag = "vue-perf-start:" + id;
+        var endTag = "vue-perf-end:" + id;
+
+        mark(startTag);
+        var vnode = vm._render();
+        mark(endTag);
+        measure(("vue " + name + " render"), startTag, endTag);
+
+        mark(startTag);
+        vm._update(vnode, hydrating);
+        mark(endTag);
+        measure(("vue " + name + " patch"), startTag, endTag);
+      };
+    } else {
+      updateComponent = function () {
+        vm._update(vm._render(), hydrating);
+      };
+    }
+
+    // we set this to vm._watcher inside the watcher's constructor
+    // since the watcher's initial patch may call $forceUpdate (e.g. inside child
+    // component's mounted hook), which relies on vm._watcher being already defined
+    new Watcher(vm, updateComponent, noop, {
+      before: function before () {
+        if (vm._isMounted && !vm._isDestroyed) {
+          callHook(vm, 'beforeUpdate');
+        }
+      }
+    }, true /* isRenderWatcher */);
+    hydrating = false;
+
+    // manually mounted instance, call mounted on self
+    // mounted is called for render-created child components in its inserted hook
+    if (vm.$vnode == null) {
+      vm._isMounted = true;
+      callHook(vm, 'mounted');
+    }
+    return vm
+  }
+
+  function updateChildComponent (
+    vm,
+    propsData,
+    listeners,
+    parentVnode,
+    renderChildren
+  ) {
+    {
+      isUpdatingChildComponent = true;
+    }
+
+    // determine whether component has slot children
+    // we need to do this before overwriting $options._renderChildren.
+
+    // check if there are dynamic scopedSlots (hand-written or compiled but with
+    // dynamic slot names). Static scoped slots compiled from template has the
+    // "$stable" marker.
+    var newScopedSlots = parentVnode.data.scopedSlots;
+    var oldScopedSlots = vm.$scopedSlots;
+    var hasDynamicScopedSlot = !!(
+      (newScopedSlots && !newScopedSlots.$stable) ||
+      (oldScopedSlots !== emptyObject && !oldScopedSlots.$stable) ||
+      (newScopedSlots && vm.$scopedSlots.$key !== newScopedSlots.$key)
+    );
+
+    // Any static slot children from the parent may have changed during parent's
+    // update. Dynamic scoped slots may also have changed. In such cases, a forced
+    // update is necessary to ensure correctness.
+    var needsForceUpdate = !!(
+      renderChildren ||               // has new static slots
+      vm.$options._renderChildren ||  // has old static slots
+      hasDynamicScopedSlot
+    );
+
+    vm.$options._parentVnode = parentVnode;
+    vm.$vnode = parentVnode; // update vm's placeholder node without re-render
+
+    if (vm._vnode) { // update child tree's parent
+      vm._vnode.parent = parentVnode;
+    }
+    vm.$options._renderChildren = renderChildren;
+
+    // update $attrs and $listeners hash
+    // these are also reactive so they may trigger child update if the child
+    // used them during render
+    vm.$attrs = parentVnode.data.attrs || emptyObject;
+    vm.$listeners = listeners || emptyObject;
+
+    // update props
+    if (propsData && vm.$options.props) {
+      toggleObserving(false);
+      var props = vm._props;
+      var propKeys = vm.$options._propKeys || [];
+      for (var i = 0; i < propKeys.length; i++) {
+        var key = propKeys[i];
+        var propOptions = vm.$options.props; // wtf flow?
+        props[key] = validateProp(key, propOptions, propsData, vm);
+      }
+      toggleObserving(true);
+      // keep a copy of raw propsData
+      vm.$options.propsData = propsData;
+    }
+
+    // update listeners
+    listeners = listeners || emptyObject;
+    var oldListeners = vm.$options._parentListeners;
+    vm.$options._parentListeners = listeners;
+    updateComponentListeners(vm, listeners, oldListeners);
+
+    // resolve slots + force update if has children
+    if (needsForceUpdate) {
+      vm.$slots = resolveSlots(renderChildren, parentVnode.context);
+      vm.$forceUpdate();
+    }
+
+    {
+      isUpdatingChildComponent = false;
+    }
+  }
+
+  function isInInactiveTree (vm) {
+    while (vm && (vm = vm.$parent)) {
+      if (vm._inactive) { return true }
+    }
+    return false
+  }
+
+  function activateChildComponent (vm, direct) {
+    if (direct) {
+      vm._directInactive = false;
+      if (isInInactiveTree(vm)) {
+        return
+      }
+    } else if (vm._directInactive) {
+      return
+    }
+    if (vm._inactive || vm._inactive === null) {
+      vm._inactive = false;
+      for (var i = 0; i < vm.$children.length; i++) {
+        activateChildComponent(vm.$children[i]);
+      }
+      callHook(vm, 'activated');
+    }
+  }
+
+  function deactivateChildComponent (vm, direct) {
+    if (direct) {
+      vm._directInactive = true;
+      if (isInInactiveTree(vm)) {
+        return
+      }
+    }
+    if (!vm._inactive) {
+      vm._inactive = true;
+      for (var i = 0; i < vm.$children.length; i++) {
+        deactivateChildComponent(vm.$children[i]);
+      }
+      callHook(vm, 'deactivated');
+    }
+  }
+
+  function callHook (vm, hook) {
+    // #7573 disable dep collection when invoking lifecycle hooks
+    pushTarget();
+    var handlers = vm.$options[hook];
+    var info = hook + " hook";
+    if (handlers) {
+      for (var i = 0, j = handlers.length; i < j; i++) {
+        invokeWithErrorHandling(handlers[i], vm, null, vm, info);
+      }
+    }
+    if (vm._hasHookEvent) {
+      vm.$emit('hook:' + hook);
+    }
+    popTarget();
+  }
+
+  /*  */
+
+  var MAX_UPDATE_COUNT = 100;
+
+  var queue = [];
+  var activatedChildren = [];
+  var has = {};
+  var circular = {};
+  var waiting = false;
+  var flushing = false;
+  var index = 0;
+
+  /**
+   * Reset the scheduler's state.
+   */
+  function resetSchedulerState () {
+    index = queue.length = activatedChildren.length = 0;
+    has = {};
+    {
+      circular = {};
+    }
+    waiting = flushing = false;
+  }
+
+  // Async edge case #6566 requires saving the timestamp when event listeners are
+  // attached. However, calling performance.now() has a perf overhead especially
+  // if the page has thousands of event listeners. Instead, we take a timestamp
+  // every time the scheduler flushes and use that for all event listeners
+  // attached during that flush.
+  var currentFlushTimestamp = 0;
+
+  // Async edge case fix requires storing an event listener's attach timestamp.
+  var getNow = Date.now;
+
+  // Determine what event timestamp the browser is using. Annoyingly, the
+  // timestamp can either be hi-res (relative to page load) or low-res
+  // (relative to UNIX epoch), so in order to compare time we have to use the
+  // same timestamp type when saving the flush timestamp.
+  // All IE versions use low-res event timestamps, and have problematic clock
+  // implementations (#9632)
+  if (inBrowser && !isIE) {
+    var performance = window.performance;
+    if (
+      performance &&
+      typeof performance.now === 'function' &&
+      getNow() > document.createEvent('Event').timeStamp
+    ) {
+      // if the event timestamp, although evaluated AFTER the Date.now(), is
+      // smaller than it, it means the event is using a hi-res timestamp,
+      // and we need to use the hi-res version for event listener timestamps as
+      // well.
+      getNow = function () { return performance.now(); };
+    }
+  }
+
+  /**
+   * Flush both queues and run the watchers.
+   */
+  function flushSchedulerQueue () {
+    currentFlushTimestamp = getNow();
+    flushing = true;
+    var watcher, id;
+
+    // Sort queue before flush.
+    // This ensures that:
+    // 1. Components are updated from parent to child. (because parent is always
+    //    created before the child)
+    // 2. A component's user watchers are run before its render watcher (because
+    //    user watchers are created before the render watcher)
+    // 3. If a component is destroyed during a parent component's watcher run,
+    //    its watchers can be skipped.
+    queue.sort(function (a, b) { return a.id - b.id; });
+
+    // do not cache length because more watchers might be pushed
+    // as we run existing watchers
+    for (index = 0; index < queue.length; index++) {
+      watcher = queue[index];
+      if (watcher.before) {
+        watcher.before();
+      }
+      id = watcher.id;
+      has[id] = null;
+      watcher.run();
+      // in dev build, check and stop circular updates.
+      if (has[id] != null) {
+        circular[id] = (circular[id] || 0) + 1;
+        if (circular[id] > MAX_UPDATE_COUNT) {
+          warn(
+            'You may have an infinite update loop ' + (
+              watcher.user
+                ? ("in watcher with expression \"" + (watcher.expression) + "\"")
+                : "in a component render function."
+            ),
+            watcher.vm
+          );
+          break
+        }
+      }
+    }
+
+    // keep copies of post queues before resetting state
+    var activatedQueue = activatedChildren.slice();
+    var updatedQueue = queue.slice();
+
+    resetSchedulerState();
+
+    // call component updated and activated hooks
+    callActivatedHooks(activatedQueue);
+    callUpdatedHooks(updatedQueue);
+
+    // devtool hook
+    /* istanbul ignore if */
+    if (devtools && config.devtools) {
+      devtools.emit('flush');
+    }
+  }
+
+  function callUpdatedHooks (queue) {
+    var i = queue.length;
+    while (i--) {
+      var watcher = queue[i];
+      var vm = watcher.vm;
+      if (vm._watcher === watcher && vm._isMounted && !vm._isDestroyed) {
+        callHook(vm, 'updated');
+      }
+    }
+  }
+
+  /**
+   * Queue a kept-alive component that was activated during patch.
+   * The queue will be processed after the entire tree has been patched.
+   */
+  function queueActivatedComponent (vm) {
+    // setting _inactive to false here so that a render function can
+    // rely on checking whether it's in an inactive tree (e.g. router-view)
+    vm._inactive = false;
+    activatedChildren.push(vm);
+  }
+
+  function callActivatedHooks (queue) {
+    for (var i = 0; i < queue.length; i++) {
+      queue[i]._inactive = true;
+      activateChildComponent(queue[i], true /* true */);
+    }
+  }
+
+  /**
+   * Push a watcher into the watcher queue.
+   * Jobs with duplicate IDs will be skipped unless it's
+   * pushed when the queue is being flushed.
+   */
+  function queueWatcher (watcher) {
+    var id = watcher.id;
+    if (has[id] == null) {
+      has[id] = true;
+      if (!flushing) {
+        queue.push(watcher);
+      } else {
+        // if already flushing, splice the watcher based on its id
+        // if already past its id, it will be run next immediately.
+        var i = queue.length - 1;
+        while (i > index && queue[i].id > watcher.id) {
+          i--;
+        }
+        queue.splice(i + 1, 0, watcher);
+      }
+      // queue the flush
+      if (!waiting) {
+        waiting = true;
+
+        if (!config.async) {
+          flushSchedulerQueue();
+          return
+        }
+        nextTick(flushSchedulerQueue);
+      }
+    }
+  }
+
+  /*  */
+
+
+
+  var uid$2 = 0;
+
+  /**
+   * A watcher parses an expression, collects dependencies,
+   * and fires callback when the expression value changes.
+   * This is used for both the $watch() api and directives.
+   */
+  var Watcher = function Watcher (
+    vm,
+    expOrFn,
+    cb,
+    options,
+    isRenderWatcher
+  ) {
+    this.vm = vm;
+    if (isRenderWatcher) {
+      vm._watcher = this;
+    }
+    vm._watchers.push(this);
+    // options
+    if (options) {
+      this.deep = !!options.deep;
+      this.user = !!options.user;
+      this.lazy = !!options.lazy;
+      this.sync = !!options.sync;
+      this.before = options.before;
+    } else {
+      this.deep = this.user = this.lazy = this.sync = false;
+    }
+    this.cb = cb;
+    this.id = ++uid$2; // uid for batching
+    this.active = true;
+    this.dirty = this.lazy; // for lazy watchers
+    this.deps = [];
+    this.newDeps = [];
+    this.depIds = new _Set();
+    this.newDepIds = new _Set();
+    this.expression = expOrFn.toString();
+    // parse expression for getter
+    if (typeof expOrFn === 'function') {
+      this.getter = expOrFn;
+    } else {
+      this.getter = parsePath(expOrFn);
+      if (!this.getter) {
+        this.getter = noop;
+        warn(
+          "Failed watching path: \"" + expOrFn + "\" " +
+          'Watcher only accepts simple dot-delimited paths. ' +
+          'For full control, use a function instead.',
+          vm
+        );
+      }
+    }
+    this.value = this.lazy
+      ? undefined
+      : this.get();
+  };
+
+  /**
+   * Evaluate the getter, and re-collect dependencies.
+   */
+  Watcher.prototype.get = function get () {
+    pushTarget(this);
+    var value;
+    var vm = this.vm;
+    try {
+      value = this.getter.call(vm, vm);
+    } catch (e) {
+      if (this.user) {
+        handleError(e, vm, ("getter for watcher \"" + (this.expression) + "\""));
+      } else {
+        throw e
+      }
+    } finally {
+      // "touch" every property so they are all tracked as
+      // dependencies for deep watching
+      if (this.deep) {
+        traverse(value);
+      }
+      popTarget();
+      this.cleanupDeps();
+    }
+    return value
+  };
+
+  /**
+   * Add a dependency to this directive.
+   */
+  Watcher.prototype.addDep = function addDep (dep) {
+    var id = dep.id;
+    if (!this.newDepIds.has(id)) {
+      this.newDepIds.add(id);
+      this.newDeps.push(dep);
+      if (!this.depIds.has(id)) {
+        dep.addSub(this);
+      }
+    }
+  };
+
+  /**
+   * Clean up for dependency collection.
+   */
+  Watcher.prototype.cleanupDeps = function cleanupDeps () {
+    var i = this.deps.length;
+    while (i--) {
+      var dep = this.deps[i];
+      if (!this.newDepIds.has(dep.id)) {
+        dep.removeSub(this);
+      }
+    }
+    var tmp = this.depIds;
+    this.depIds = this.newDepIds;
+    this.newDepIds = tmp;
+    this.newDepIds.clear();
+    tmp = this.deps;
+    this.deps = this.newDeps;
+    this.newDeps = tmp;
+    this.newDeps.length = 0;
+  };
+
+  /**
+   * Subscriber interface.
+   * Will be called when a dependency changes.
+   */
+  Watcher.prototype.update = function update () {
+    /* istanbul ignore else */
+    if (this.lazy) {
+      this.dirty = true;
+    } else if (this.sync) {
+      this.run();
+    } else {
+      queueWatcher(this);
+    }
+  };
+
+  /**
+   * Scheduler job interface.
+   * Will be called by the scheduler.
+   */
+  Watcher.prototype.run = function run () {
+    if (this.active) {
+      var value = this.get();
+      if (
+        value !== this.value ||
+        // Deep watchers and watchers on Object/Arrays should fire even
+        // when the value is the same, because the value may
+        // have mutated.
+        isObject(value) ||
+        this.deep
+      ) {
+        // set new value
+        var oldValue = this.value;
+        this.value = value;
+        if (this.user) {
+          try {
+            this.cb.call(this.vm, value, oldValue);
+          } catch (e) {
+            handleError(e, this.vm, ("callback for watcher \"" + (this.expression) + "\""));
+          }
+        } else {
+          this.cb.call(this.vm, value, oldValue);
+        }
+      }
+    }
+  };
+
+  /**
+   * Evaluate the value of the watcher.
+   * This only gets called for lazy watchers.
+   */
+  Watcher.prototype.evaluate = function evaluate () {
+    this.value = this.get();
+    this.dirty = false;
+  };
+
+  /**
+   * Depend on all deps collected by this watcher.
+   */
+  Watcher.prototype.depend = function depend () {
+    var i = this.deps.length;
+    while (i--) {
+      this.deps[i].depend();
+    }
+  };
+
+  /**
+   * Remove self from all dependencies' subscriber list.
+   */
+  Watcher.prototype.teardown = function teardown () {
+    if (this.active) {
+      // remove self from vm's watcher list
+      // this is a somewhat expensive operation so we skip it
+      // if the vm is being destroyed.
+      if (!this.vm._isBeingDestroyed) {
+        remove(this.vm._watchers, this);
+      }
+      var i = this.deps.length;
+      while (i--) {
+        this.deps[i].removeSub(this);
+      }
+      this.active = false;
+    }
+  };
+
+  /*  */
+
+  var sharedPropertyDefinition = {
+    enumerable: true,
+    configurable: true,
+    get: noop,
+    set: noop
+  };
+
+  function proxy (target, sourceKey, key) {
+    sharedPropertyDefinition.get = function proxyGetter () {
+      return this[sourceKey][key]
+    };
+    sharedPropertyDefinition.set = function proxySetter (val) {
+      this[sourceKey][key] = val;
+    };
+    Object.defineProperty(target, key, sharedPropertyDefinition);
+  }
+
+  function initState (vm) {
+    vm._watchers = [];
+    var opts = vm.$options;
+    if (opts.props) { initProps(vm, opts.props); }
+    if (opts.methods) { initMethods(vm, opts.methods); }
+    if (opts.data) {
+      initData(vm);
+    } else {
+      observe(vm._data = {}, true /* asRootData */);
+    }
+    if (opts.computed) { initComputed(vm, opts.computed); }
+    if (opts.watch && opts.watch !== nativeWatch) {
+      initWatch(vm, opts.watch);
+    }
+  }
+
+  function initProps (vm, propsOptions) {
+    var propsData = vm.$options.propsData || {};
+    var props = vm._props = {};
+    // cache prop keys so that future props updates can iterate using Array
+    // instead of dynamic object key enumeration.
+    var keys = vm.$options._propKeys = [];
+    var isRoot = !vm.$parent;
+    // root instance props should be converted
+    if (!isRoot) {
+      toggleObserving(false);
+    }
+    var loop = function ( key ) {
+      keys.push(key);
+      var value = validateProp(key, propsOptions, propsData, vm);
+      /* istanbul ignore else */
+      {
+        var hyphenatedKey = hyphenate(key);
+        if (isReservedAttribute(hyphenatedKey) ||
+            config.isReservedAttr(hyphenatedKey)) {
+          warn(
+            ("\"" + hyphenatedKey + "\" is a reserved attribute and cannot be used as component prop."),
+            vm
+          );
+        }
+        defineReactive$$1(props, key, value, function () {
+          if (!isRoot && !isUpdatingChildComponent) {
+            warn(
+              "Avoid mutating a prop directly since the value will be " +
+              "overwritten whenever the parent component re-renders. " +
+              "Instead, use a data or computed property based on the prop's " +
+              "value. Prop being mutated: \"" + key + "\"",
+              vm
+            );
+          }
+        });
+      }
+      // static props are already proxied on the component's prototype
+      // during Vue.extend(). We only need to proxy props defined at
+      // instantiation here.
+      if (!(key in vm)) {
+        proxy(vm, "_props", key);
+      }
+    };
+
+    for (var key in propsOptions) loop( key );
+    toggleObserving(true);
+  }
+
+  function initData (vm) {
+    var data = vm.$options.data;
+    data = vm._data = typeof data === 'function'
+      ? getData(data, vm)
+      : data || {};
+    if (!isPlainObject(data)) {
+      data = {};
+      warn(
+        'data functions should return an object:\n' +
+        'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function',
+        vm
+      );
+    }
+    // proxy data on instance
+    var keys = Object.keys(data);
+    var props = vm.$options.props;
+    var methods = vm.$options.methods;
+    var i = keys.length;
+    while (i--) {
+      var key = keys[i];
+      {
+        if (methods && hasOwn(methods, key)) {
+          warn(
+            ("Method \"" + key + "\" has already been defined as a data property."),
+            vm
+          );
+        }
+      }
+      if (props && hasOwn(props, key)) {
+        warn(
+          "The data property \"" + key + "\" is already declared as a prop. " +
+          "Use prop default value instead.",
+          vm
+        );
+      } else if (!isReserved(key)) {
+        proxy(vm, "_data", key);
+      }
+    }
+    // observe data
+    observe(data, true /* asRootData */);
+  }
+
+  function getData (data, vm) {
+    // #7573 disable dep collection when invoking data getters
+    pushTarget();
+    try {
+      return data.call(vm, vm)
+    } catch (e) {
+      handleError(e, vm, "data()");
+      return {}
+    } finally {
+      popTarget();
+    }
+  }
+
+  var computedWatcherOptions = { lazy: true };
+
+  function initComputed (vm, computed) {
+    // $flow-disable-line
+    var watchers = vm._computedWatchers = Object.create(null);
+    // computed properties are just getters during SSR
+    var isSSR = isServerRendering();
+
+    for (var key in computed) {
+      var userDef = computed[key];
+      var getter = typeof userDef === 'function' ? userDef : userDef.get;
+      if (getter == null) {
+        warn(
+          ("Getter is missing for computed property \"" + key + "\"."),
+          vm
+        );
+      }
+
+      if (!isSSR) {
+        // create internal watcher for the computed property.
+        watchers[key] = new Watcher(
+          vm,
+          getter || noop,
+          noop,
+          computedWatcherOptions
+        );
+      }
+
+      // component-defined computed properties are already defined on the
+      // component prototype. We only need to define computed properties defined
+      // at instantiation here.
+      if (!(key in vm)) {
+        defineComputed(vm, key, userDef);
+      } else {
+        if (key in vm.$data) {
+          warn(("The computed property \"" + key + "\" is already defined in data."), vm);
+        } else if (vm.$options.props && key in vm.$options.props) {
+          warn(("The computed property \"" + key + "\" is already defined as a prop."), vm);
+        }
+      }
+    }
+  }
+
+  function defineComputed (
+    target,
+    key,
+    userDef
+  ) {
+    var shouldCache = !isServerRendering();
+    if (typeof userDef === 'function') {
+      sharedPropertyDefinition.get = shouldCache
+        ? createComputedGetter(key)
+        : createGetterInvoker(userDef);
+      sharedPropertyDefinition.set = noop;
+    } else {
+      sharedPropertyDefinition.get = userDef.get
+        ? shouldCache && userDef.cache !== false
+          ? createComputedGetter(key)
+          : createGetterInvoker(userDef.get)
+        : noop;
+      sharedPropertyDefinition.set = userDef.set || noop;
+    }
+    if (sharedPropertyDefinition.set === noop) {
+      sharedPropertyDefinition.set = function () {
+        warn(
+          ("Computed property \"" + key + "\" was assigned to but it has no setter."),
+          this
+        );
+      };
+    }
+    Object.defineProperty(target, key, sharedPropertyDefinition);
+  }
+
+  function createComputedGetter (key) {
+    return function computedGetter () {
+      var watcher = this._computedWatchers && this._computedWatchers[key];
+      if (watcher) {
+        if (watcher.dirty) {
+          watcher.evaluate();
+        }
+        if (Dep.target) {
+          watcher.depend();
+        }
+        return watcher.value
+      }
+    }
+  }
+
+  function createGetterInvoker(fn) {
+    return function computedGetter () {
+      return fn.call(this, this)
+    }
+  }
+
+  function initMethods (vm, methods) {
+    var props = vm.$options.props;
+    for (var key in methods) {
+      {
+        if (typeof methods[key] !== 'function') {
+          warn(
+            "Method \"" + key + "\" has type \"" + (typeof methods[key]) + "\" in the component definition. " +
+            "Did you reference the function correctly?",
+            vm
+          );
+        }
+        if (props && hasOwn(props, key)) {
+          warn(
+            ("Method \"" + key + "\" has already been defined as a prop."),
+            vm
+          );
+        }
+        if ((key in vm) && isReserved(key)) {
+          warn(
+            "Method \"" + key + "\" conflicts with an existing Vue instance method. " +
+            "Avoid defining component methods that start with _ or $."
+          );
+        }
+      }
+      vm[key] = typeof methods[key] !== 'function' ? noop : bind(methods[key], vm);
+    }
+  }
+
+  function initWatch (vm, watch) {
+    for (var key in watch) {
+      var handler = watch[key];
+      if (Array.isArray(handler)) {
+        for (var i = 0; i < handler.length; i++) {
+          createWatcher(vm, key, handler[i]);
+        }
+      } else {
+        createWatcher(vm, key, handler);
+      }
+    }
+  }
+
+  function createWatcher (
+    vm,
+    expOrFn,
+    handler,
+    options
+  ) {
+    if (isPlainObject(handler)) {
+      options = handler;
+      handler = handler.handler;
+    }
+    if (typeof handler === 'string') {
+      handler = vm[handler];
+    }
+    return vm.$watch(expOrFn, handler, options)
+  }
+
+  function stateMixin (Vue) {
+    // flow somehow has problems with directly declared definition object
+    // when using Object.defineProperty, so we have to procedurally build up
+    // the object here.
+    var dataDef = {};
+    dataDef.get = function () { return this._data };
+    var propsDef = {};
+    propsDef.get = function () { return this._props };
+    {
+      dataDef.set = function () {
+        warn(
+          'Avoid replacing instance root $data. ' +
+          'Use nested data properties instead.',
+          this
+        );
+      };
+      propsDef.set = function () {
+        warn("$props is readonly.", this);
+      };
+    }
+    Object.defineProperty(Vue.prototype, '$data', dataDef);
+    Object.defineProperty(Vue.prototype, '$props', propsDef);
+
+    Vue.prototype.$set = set;
+    Vue.prototype.$delete = del;
+
+    Vue.prototype.$watch = function (
+      expOrFn,
+      cb,
+      options
+    ) {
+      var vm = this;
+      if (isPlainObject(cb)) {
+        return createWatcher(vm, expOrFn, cb, options)
+      }
+      options = options || {};
+      options.user = true;
+      var watcher = new Watcher(vm, expOrFn, cb, options);
+      if (options.immediate) {
+        try {
+          cb.call(vm, watcher.value);
+        } catch (error) {
+          handleError(error, vm, ("callback for immediate watcher \"" + (watcher.expression) + "\""));
+        }
+      }
+      return function unwatchFn () {
+        watcher.teardown();
+      }
+    };
+  }
+
+  /*  */
+
+  var uid$3 = 0;
+
+  function initMixin (Vue) {
+    Vue.prototype._init = function (options) {
+      var vm = this;
+      // a uid
+      vm._uid = uid$3++;
+
+      var startTag, endTag;
+      /* istanbul ignore if */
+      if (config.performance && mark) {
+        startTag = "vue-perf-start:" + (vm._uid);
+        endTag = "vue-perf-end:" + (vm._uid);
+        mark(startTag);
+      }
+
+      // a flag to avoid this being observed
+      vm._isVue = true;
+      // merge options
+      if (options && options._isComponent) {
+        // optimize internal component instantiation
+        // since dynamic options merging is pretty slow, and none of the
+        // internal component options needs special treatment.
+        initInternalComponent(vm, options);
+      } else {
+        vm.$options = mergeOptions(
+          resolveConstructorOptions(vm.constructor),
+          options || {},
+          vm
+        );
+      }
+      /* istanbul ignore else */
+      {
+        initProxy(vm);
+      }
+      // expose real self
+      vm._self = vm;
+      initLifecycle(vm);
+      initEvents(vm);
+      initRender(vm);
+      callHook(vm, 'beforeCreate');
+      initInjections(vm); // resolve injections before data/props
+      initState(vm);
+      initProvide(vm); // resolve provide after data/props
+      callHook(vm, 'created');
+
+      /* istanbul ignore if */
+      if (config.performance && mark) {
+        vm._name = formatComponentName(vm, false);
+        mark(endTag);
+        measure(("vue " + (vm._name) + " init"), startTag, endTag);
+      }
+
+      if (vm.$options.el) {
+        vm.$mount(vm.$options.el);
+      }
+    };
+  }
+
+  function initInternalComponent (vm, options) {
+    var opts = vm.$options = Object.create(vm.constructor.options);
+    // doing this because it's faster than dynamic enumeration.
+    var parentVnode = options._parentVnode;
+    opts.parent = options.parent;
+    opts._parentVnode = parentVnode;
+
+    var vnodeComponentOptions = parentVnode.componentOptions;
+    opts.propsData = vnodeComponentOptions.propsData;
+    opts._parentListeners = vnodeComponentOptions.listeners;
+    opts._renderChildren = vnodeComponentOptions.children;
+    opts._componentTag = vnodeComponentOptions.tag;
+
+    if (options.render) {
+      opts.render = options.render;
+      opts.staticRenderFns = options.staticRenderFns;
+    }
+  }
+
+  function resolveConstructorOptions (Ctor) {
+    var options = Ctor.options;
+    if (Ctor.super) {
+      var superOptions = resolveConstructorOptions(Ctor.super);
+      var cachedSuperOptions = Ctor.superOptions;
+      if (superOptions !== cachedSuperOptions) {
+        // super option changed,
+        // need to resolve new options.
+        Ctor.superOptions = superOptions;
+        // check if there are any late-modified/attached options (#4976)
+        var modifiedOptions = resolveModifiedOptions(Ctor);
+        // update base extend options
+        if (modifiedOptions) {
+          extend(Ctor.extendOptions, modifiedOptions);
+        }
+        options = Ctor.options = mergeOptions(superOptions, Ctor.extendOptions);
+        if (options.name) {
+          options.components[options.name] = Ctor;
+        }
+      }
+    }
+    return options
+  }
+
+  function resolveModifiedOptions (Ctor) {
+    var modified;
+    var latest = Ctor.options;
+    var sealed = Ctor.sealedOptions;
+    for (var key in latest) {
+      if (latest[key] !== sealed[key]) {
+        if (!modified) { modified = {}; }
+        modified[key] = latest[key];
+      }
+    }
+    return modified
+  }
+
+  function Vue (options) {
+    if (!(this instanceof Vue)
+    ) {
+      warn('Vue is a constructor and should be called with the `new` keyword');
+    }
+    this._init(options);
+  }
+
+  initMixin(Vue);
+  stateMixin(Vue);
+  eventsMixin(Vue);
+  lifecycleMixin(Vue);
+  renderMixin(Vue);
+
+  /*  */
+
+  function initUse (Vue) {
+    Vue.use = function (plugin) {
+      var installedPlugins = (this._installedPlugins || (this._installedPlugins = []));
+      if (installedPlugins.indexOf(plugin) > -1) {
+        return this
+      }
+
+      // additional parameters
+      var args = toArray(arguments, 1);
+      args.unshift(this);
+      if (typeof plugin.install === 'function') {
+        plugin.install.apply(plugin, args);
+      } else if (typeof plugin === 'function') {
+        plugin.apply(null, args);
+      }
+      installedPlugins.push(plugin);
+      return this
+    };
+  }
+
+  /*  */
+
+  function initMixin$1 (Vue) {
+    Vue.mixin = function (mixin) {
+      this.options = mergeOptions(this.options, mixin);
+      return this
+    };
+  }
+
+  /*  */
+
+  function initExtend (Vue) {
+    /**
+     * Each instance constructor, including Vue, has a unique
+     * cid. This enables us to create wrapped "child
+     * constructors" for prototypal inheritance and cache them.
+     */
+    Vue.cid = 0;
+    var cid = 1;
+
+    /**
+     * Class inheritance
+     */
+    Vue.extend = function (extendOptions) {
+      extendOptions = extendOptions || {};
+      var Super = this;
+      var SuperId = Super.cid;
+      var cachedCtors = extendOptions._Ctor || (extendOptions._Ctor = {});
+      if (cachedCtors[SuperId]) {
+        return cachedCtors[SuperId]
+      }
+
+      var name = extendOptions.name || Super.options.name;
+      if (name) {
+        validateComponentName(name);
+      }
+
+      var Sub = function VueComponent (options) {
+        this._init(options);
+      };
+      Sub.prototype = Object.create(Super.prototype);
+      Sub.prototype.constructor = Sub;
+      Sub.cid = cid++;
+      Sub.options = mergeOptions(
+        Super.options,
+        extendOptions
+      );
+      Sub['super'] = Super;
+
+      // For props and computed properties, we define the proxy getters on
+      // the Vue instances at extension time, on the extended prototype. This
+      // avoids Object.defineProperty calls for each instance created.
+      if (Sub.options.props) {
+        initProps$1(Sub);
+      }
+      if (Sub.options.computed) {
+        initComputed$1(Sub);
+      }
+
+      // allow further extension/mixin/plugin usage
+      Sub.extend = Super.extend;
+      Sub.mixin = Super.mixin;
+      Sub.use = Super.use;
+
+      // create asset registers, so extended classes
+      // can have their private assets too.
+      ASSET_TYPES.forEach(function (type) {
+        Sub[type] = Super[type];
+      });
+      // enable recursive self-lookup
+      if (name) {
+        Sub.options.components[name] = Sub;
+      }
+
+      // keep a reference to the super options at extension time.
+      // later at instantiation we can check if Super's options have
+      // been updated.
+      Sub.superOptions = Super.options;
+      Sub.extendOptions = extendOptions;
+      Sub.sealedOptions = extend({}, Sub.options);
+
+      // cache constructor
+      cachedCtors[SuperId] = Sub;
+      return Sub
+    };
+  }
+
+  function initProps$1 (Comp) {
+    var props = Comp.options.props;
+    for (var key in props) {
+      proxy(Comp.prototype, "_props", key);
+    }
+  }
+
+  function initComputed$1 (Comp) {
+    var computed = Comp.options.computed;
+    for (var key in computed) {
+      defineComputed(Comp.prototype, key, computed[key]);
+    }
+  }
+
+  /*  */
+
+  function initAssetRegisters (Vue) {
+    /**
+     * Create asset registration methods.
+     */
+    ASSET_TYPES.forEach(function (type) {
+      Vue[type] = function (
+        id,
+        definition
+      ) {
+        if (!definition) {
+          return this.options[type + 's'][id]
+        } else {
+          /* istanbul ignore if */
+          if (type === 'component') {
+            validateComponentName(id);
+          }
+          if (type === 'component' && isPlainObject(definition)) {
+            definition.name = definition.name || id;
+            definition = this.options._base.extend(definition);
+          }
+          if (type === 'directive' && typeof definition === 'function') {
+            definition = { bind: definition, update: definition };
+          }
+          this.options[type + 's'][id] = definition;
+          return definition
+        }
+      };
+    });
+  }
+
+  /*  */
+
+
+
+  function getComponentName (opts) {
+    return opts && (opts.Ctor.options.name || opts.tag)
+  }
+
+  function matches (pattern, name) {
+    if (Array.isArray(pattern)) {
+      return pattern.indexOf(name) > -1
+    } else if (typeof pattern === 'string') {
+      return pattern.split(',').indexOf(name) > -1
+    } else if (isRegExp(pattern)) {
+      return pattern.test(name)
+    }
+    /* istanbul ignore next */
+    return false
+  }
+
+  function pruneCache (keepAliveInstance, filter) {
+    var cache = keepAliveInstance.cache;
+    var keys = keepAliveInstance.keys;
+    var _vnode = keepAliveInstance._vnode;
+    for (var key in cache) {
+      var cachedNode = cache[key];
+      if (cachedNode) {
+        var name = getComponentName(cachedNode.componentOptions);
+        if (name && !filter(name)) {
+          pruneCacheEntry(cache, key, keys, _vnode);
+        }
+      }
+    }
+  }
+
+  function pruneCacheEntry (
+    cache,
+    key,
+    keys,
+    current
+  ) {
+    var cached$$1 = cache[key];
+    if (cached$$1 && (!current || cached$$1.tag !== current.tag)) {
+      cached$$1.componentInstance.$destroy();
+    }
+    cache[key] = null;
+    remove(keys, key);
+  }
+
+  var patternTypes = [String, RegExp, Array];
+
+  var KeepAlive = {
+    name: 'keep-alive',
+    abstract: true,
+
+    props: {
+      include: patternTypes,
+      exclude: patternTypes,
+      max: [String, Number]
+    },
+
+    created: function created () {
+      this.cache = Object.create(null);
+      this.keys = [];
+    },
+
+    destroyed: function destroyed () {
+      for (var key in this.cache) {
+        pruneCacheEntry(this.cache, key, this.keys);
+      }
+    },
+
+    mounted: function mounted () {
+      var this$1 = this;
+
+      this.$watch('include', function (val) {
+        pruneCache(this$1, function (name) { return matches(val, name); });
+      });
+      this.$watch('exclude', function (val) {
+        pruneCache(this$1, function (name) { return !matches(val, name); });
+      });
+    },
+
+    render: function render () {
+      var slot = this.$slots.default;
+      var vnode = getFirstComponentChild(slot);
+      var componentOptions = vnode && vnode.componentOptions;
+      if (componentOptions) {
+        // check pattern
+        var name = getComponentName(componentOptions);
+        var ref = this;
+        var include = ref.include;
+        var exclude = ref.exclude;
+        if (
+          // not included
+          (include && (!name || !matches(include, name))) ||
+          // excluded
+          (exclude && name && matches(exclude, name))
+        ) {
+          return vnode
+        }
+
+        var ref$1 = this;
+        var cache = ref$1.cache;
+        var keys = ref$1.keys;
+        var key = vnode.key == null
+          // same constructor may get registered as different local components
+          // so cid alone is not enough (#3269)
+          ? componentOptions.Ctor.cid + (componentOptions.tag ? ("::" + (componentOptions.tag)) : '')
+          : vnode.key;
+        if (cache[key]) {
+          vnode.componentInstance = cache[key].componentInstance;
+          // make current key freshest
+          remove(keys, key);
+          keys.push(key);
+        } else {
+          cache[key] = vnode;
+          keys.push(key);
+          // prune oldest entry
+          if (this.max && keys.length > parseInt(this.max)) {
+            pruneCacheEntry(cache, keys[0], keys, this._vnode);
+          }
+        }
+
+        vnode.data.keepAlive = true;
+      }
+      return vnode || (slot && slot[0])
+    }
+  };
+
+  var builtInComponents = {
+    KeepAlive: KeepAlive
+  };
+
+  /*  */
+
+  function initGlobalAPI (Vue) {
+    // config
+    var configDef = {};
+    configDef.get = function () { return config; };
+    {
+      configDef.set = function () {
+        warn(
+          'Do not replace the Vue.config object, set individual fields instead.'
+        );
+      };
+    }
+    Object.defineProperty(Vue, 'config', configDef);
+
+    // exposed util methods.
+    // NOTE: these are not considered part of the public API - avoid relying on
+    // them unless you are aware of the risk.
+    Vue.util = {
+      warn: warn,
+      extend: extend,
+      mergeOptions: mergeOptions,
+      defineReactive: defineReactive$$1
+    };
+
+    Vue.set = set;
+    Vue.delete = del;
+    Vue.nextTick = nextTick;
+
+    // 2.6 explicit observable API
+    Vue.observable = function (obj) {
+      observe(obj);
+      return obj
+    };
+
+    Vue.options = Object.create(null);
+    ASSET_TYPES.forEach(function (type) {
+      Vue.options[type + 's'] = Object.create(null);
+    });
+
+    // this is used to identify the "base" constructor to extend all plain-object
+    // components with in Weex's multi-instance scenarios.
+    Vue.options._base = Vue;
+
+    extend(Vue.options.components, builtInComponents);
+
+    initUse(Vue);
+    initMixin$1(Vue);
+    initExtend(Vue);
+    initAssetRegisters(Vue);
+  }
+
+  initGlobalAPI(Vue);
+
+  Object.defineProperty(Vue.prototype, '$isServer', {
+    get: isServerRendering
+  });
+
+  Object.defineProperty(Vue.prototype, '$ssrContext', {
+    get: function get () {
+      /* istanbul ignore next */
+      return this.$vnode && this.$vnode.ssrContext
+    }
+  });
+
+  // expose FunctionalRenderContext for ssr runtime helper installation
+  Object.defineProperty(Vue, 'FunctionalRenderContext', {
+    value: FunctionalRenderContext
+  });
+
+  Vue.version = '2.6.12';
+
+  /*  */
+
+  // these are reserved for web because they are directly compiled away
+  // during template compilation
+  var isReservedAttr = makeMap('style,class');
+
+  // attributes that should be using props for binding
+  var acceptValue = makeMap('input,textarea,option,select,progress');
+  var mustUseProp = function (tag, type, attr) {
+    return (
+      (attr === 'value' && acceptValue(tag)) && type !== 'button' ||
+      (attr === 'selected' && tag === 'option') ||
+      (attr === 'checked' && tag === 'input') ||
+      (attr === 'muted' && tag === 'video')
+    )
+  };
+
+  var isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck');
+
+  var isValidContentEditableValue = makeMap('events,caret,typing,plaintext-only');
+
+  var convertEnumeratedValue = function (key, value) {
+    return isFalsyAttrValue(value) || value === 'false'
+      ? 'false'
+      // allow arbitrary string value for contenteditable
+      : key === 'contenteditable' && isValidContentEditableValue(value)
+        ? value
+        : 'true'
+  };
+
+  var isBooleanAttr = makeMap(
+    'allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' +
+    'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' +
+    'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' +
+    'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' +
+    'required,reversed,scoped,seamless,selected,sortable,translate,' +
+    'truespeed,typemustmatch,visible'
+  );
+
+  var xlinkNS = 'http://www.w3.org/1999/xlink';
+
+  var isXlink = function (name) {
+    return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink'
+  };
+
+  var getXlinkProp = function (name) {
+    return isXlink(name) ? name.slice(6, name.length) : ''
+  };
+
+  var isFalsyAttrValue = function (val) {
+    return val == null || val === false
+  };
+
+  /*  */
+
+  function genClassForVnode (vnode) {
+    var data = vnode.data;
+    var parentNode = vnode;
+    var childNode = vnode;
+    while (isDef(childNode.componentInstance)) {
+      childNode = childNode.componentInstance._vnode;
+      if (childNode && childNode.data) {
+        data = mergeClassData(childNode.data, data);
+      }
+    }
+    while (isDef(parentNode = parentNode.parent)) {
+      if (parentNode && parentNode.data) {
+        data = mergeClassData(data, parentNode.data);
+      }
+    }
+    return renderClass(data.staticClass, data.class)
+  }
+
+  function mergeClassData (child, parent) {
+    return {
+      staticClass: concat(child.staticClass, parent.staticClass),
+      class: isDef(child.class)
+        ? [child.class, parent.class]
+        : parent.class
+    }
+  }
+
+  function renderClass (
+    staticClass,
+    dynamicClass
+  ) {
+    if (isDef(staticClass) || isDef(dynamicClass)) {
+      return concat(staticClass, stringifyClass(dynamicClass))
+    }
+    /* istanbul ignore next */
+    return ''
+  }
+
+  function concat (a, b) {
+    return a ? b ? (a + ' ' + b) : a : (b || '')
+  }
+
+  function stringifyClass (value) {
+    if (Array.isArray(value)) {
+      return stringifyArray(value)
+    }
+    if (isObject(value)) {
+      return stringifyObject(value)
+    }
+    if (typeof value === 'string') {
+      return value
+    }
+    /* istanbul ignore next */
+    return ''
+  }
+
+  function stringifyArray (value) {
+    var res = '';
+    var stringified;
+    for (var i = 0, l = value.length; i < l; i++) {
+      if (isDef(stringified = stringifyClass(value[i])) && stringified !== '') {
+        if (res) { res += ' '; }
+        res += stringified;
+      }
+    }
+    return res
+  }
+
+  function stringifyObject (value) {
+    var res = '';
+    for (var key in value) {
+      if (value[key]) {
+        if (res) { res += ' '; }
+        res += key;
+      }
+    }
+    return res
+  }
+
+  /*  */
+
+  var namespaceMap = {
+    svg: 'http://www.w3.org/2000/svg',
+    math: 'http://www.w3.org/1998/Math/MathML'
+  };
+
+  var isHTMLTag = makeMap(
+    'html,body,base,head,link,meta,style,title,' +
+    'address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,' +
+    'div,dd,dl,dt,figcaption,figure,picture,hr,img,li,main,ol,p,pre,ul,' +
+    'a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,' +
+    's,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video,' +
+    'embed,object,param,source,canvas,script,noscript,del,ins,' +
+    'caption,col,colgroup,table,thead,tbody,td,th,tr,' +
+    'button,datalist,fieldset,form,input,label,legend,meter,optgroup,option,' +
+    'output,progress,select,textarea,' +
+    'details,dialog,menu,menuitem,summary,' +
+    'content,element,shadow,template,blockquote,iframe,tfoot'
+  );
+
+  // this map is intentionally selective, only covering SVG elements that may
+  // contain child elements.
+  var isSVG = makeMap(
+    'svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,font-face,' +
+    'foreignObject,g,glyph,image,line,marker,mask,missing-glyph,path,pattern,' +
+    'polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view',
+    true
+  );
+
+  var isPreTag = function (tag) { return tag === 'pre'; };
+
+  var isReservedTag = function (tag) {
+    return isHTMLTag(tag) || isSVG(tag)
+  };
+
+  function getTagNamespace (tag) {
+    if (isSVG(tag)) {
+      return 'svg'
+    }
+    // basic support for MathML
+    // note it doesn't support other MathML elements being component roots
+    if (tag === 'math') {
+      return 'math'
+    }
+  }
+
+  var unknownElementCache = Object.create(null);
+  function isUnknownElement (tag) {
+    /* istanbul ignore if */
+    if (!inBrowser) {
+      return true
+    }
+    if (isReservedTag(tag)) {
+      return false
+    }
+    tag = tag.toLowerCase();
+    /* istanbul ignore if */
+    if (unknownElementCache[tag] != null) {
+      return unknownElementCache[tag]
+    }
+    var el = document.createElement(tag);
+    if (tag.indexOf('-') > -1) {
+      // http://stackoverflow.com/a/28210364/1070244
+      return (unknownElementCache[tag] = (
+        el.constructor === window.HTMLUnknownElement ||
+        el.constructor === window.HTMLElement
+      ))
+    } else {
+      return (unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString()))
+    }
+  }
+
+  var isTextInputType = makeMap('text,number,password,search,email,tel,url');
+
+  /*  */
+
+  /**
+   * Query an element selector if it's not an element already.
+   */
+  function query (el) {
+    if (typeof el === 'string') {
+      var selected = document.querySelector(el);
+      if (!selected) {
+        warn(
+          'Cannot find element: ' + el
+        );
+        return document.createElement('div')
+      }
+      return selected
+    } else {
+      return el
+    }
+  }
+
+  /*  */
+
+  function createElement$1 (tagName, vnode) {
+    var elm = document.createElement(tagName);
+    if (tagName !== 'select') {
+      return elm
+    }
+    // false or null will remove the attribute but undefined will not
+    if (vnode.data && vnode.data.attrs && vnode.data.attrs.multiple !== undefined) {
+      elm.setAttribute('multiple', 'multiple');
+    }
+    return elm
+  }
+
+  function createElementNS (namespace, tagName) {
+    return document.createElementNS(namespaceMap[namespace], tagName)
+  }
+
+  function createTextNode (text) {
+    return document.createTextNode(text)
+  }
+
+  function createComment (text) {
+    return document.createComment(text)
+  }
+
+  function insertBefore (parentNode, newNode, referenceNode) {
+    parentNode.insertBefore(newNode, referenceNode);
+  }
+
+  function removeChild (node, child) {
+    node.removeChild(child);
+  }
+
+  function appendChild (node, child) {
+    node.appendChild(child);
+  }
+
+  function parentNode (node) {
+    return node.parentNode
+  }
+
+  function nextSibling (node) {
+    return node.nextSibling
+  }
+
+  function tagName (node) {
+    return node.tagName
+  }
+
+  function setTextContent (node, text) {
+    node.textContent = text;
+  }
+
+  function setStyleScope (node, scopeId) {
+    node.setAttribute(scopeId, '');
+  }
+
+  var nodeOps = /*#__PURE__*/Object.freeze({
+    createElement: createElement$1,
+    createElementNS: createElementNS,
+    createTextNode: createTextNode,
+    createComment: createComment,
+    insertBefore: insertBefore,
+    removeChild: removeChild,
+    appendChild: appendChild,
+    parentNode: parentNode,
+    nextSibling: nextSibling,
+    tagName: tagName,
+    setTextContent: setTextContent,
+    setStyleScope: setStyleScope
+  });
+
+  /*  */
+
+  var ref = {
+    create: function create (_, vnode) {
+      registerRef(vnode);
+    },
+    update: function update (oldVnode, vnode) {
+      if (oldVnode.data.ref !== vnode.data.ref) {
+        registerRef(oldVnode, true);
+        registerRef(vnode);
+      }
+    },
+    destroy: function destroy (vnode) {
+      registerRef(vnode, true);
+    }
+  };
+
+  function registerRef (vnode, isRemoval) {
+    var key = vnode.data.ref;
+    if (!isDef(key)) { return }
+
+    var vm = vnode.context;
+    var ref = vnode.componentInstance || vnode.elm;
+    var refs = vm.$refs;
+    if (isRemoval) {
+      if (Array.isArray(refs[key])) {
+        remove(refs[key], ref);
+      } else if (refs[key] === ref) {
+        refs[key] = undefined;
+      }
+    } else {
+      if (vnode.data.refInFor) {
+        if (!Array.isArray(refs[key])) {
+          refs[key] = [ref];
+        } else if (refs[key].indexOf(ref) < 0) {
+          // $flow-disable-line
+          refs[key].push(ref);
+        }
+      } else {
+        refs[key] = ref;
+      }
+    }
+  }
+
+  /**
+   * Virtual DOM patching algorithm based on Snabbdom by
+   * Simon Friis Vindum (@paldepind)
+   * Licensed under the MIT License
+   * https://github.com/paldepind/snabbdom/blob/master/LICENSE
+   *
+   * modified by Evan You (@yyx990803)
+   *
+   * Not type-checking this because this file is perf-critical and the cost
+   * of making flow understand it is not worth it.
+   */
+
+  var emptyNode = new VNode('', {}, []);
+
+  var hooks = ['create', 'activate', 'update', 'remove', 'destroy'];
+
+  function sameVnode (a, b) {
+    return (
+      a.key === b.key && (
+        (
+          a.tag === b.tag &&
+          a.isComment === b.isComment &&
+          isDef(a.data) === isDef(b.data) &&
+          sameInputType(a, b)
+        ) || (
+          isTrue(a.isAsyncPlaceholder) &&
+          a.asyncFactory === b.asyncFactory &&
+          isUndef(b.asyncFactory.error)
+        )
+      )
+    )
+  }
+
+  function sameInputType (a, b) {
+    if (a.tag !== 'input') { return true }
+    var i;
+    var typeA = isDef(i = a.data) && isDef(i = i.attrs) && i.type;
+    var typeB = isDef(i = b.data) && isDef(i = i.attrs) && i.type;
+    return typeA === typeB || isTextInputType(typeA) && isTextInputType(typeB)
+  }
+
+  function createKeyToOldIdx (children, beginIdx, endIdx) {
+    var i, key;
+    var map = {};
+    for (i = beginIdx; i <= endIdx; ++i) {
+      key = children[i].key;
+      if (isDef(key)) { map[key] = i; }
+    }
+    return map
+  }
+
+  function createPatchFunction (backend) {
+    var i, j;
+    var cbs = {};
+
+    var modules = backend.modules;
+    var nodeOps = backend.nodeOps;
+
+    for (i = 0; i < hooks.length; ++i) {
+      cbs[hooks[i]] = [];
+      for (j = 0; j < modules.length; ++j) {
+        if (isDef(modules[j][hooks[i]])) {
+          cbs[hooks[i]].push(modules[j][hooks[i]]);
+        }
+      }
+    }
+
+    function emptyNodeAt (elm) {
+      return new VNode(nodeOps.tagName(elm).toLowerCase(), {}, [], undefined, elm)
+    }
+
+    function createRmCb (childElm, listeners) {
+      function remove$$1 () {
+        if (--remove$$1.listeners === 0) {
+          removeNode(childElm);
+        }
+      }
+      remove$$1.listeners = listeners;
+      return remove$$1
+    }
+
+    function removeNode (el) {
+      var parent = nodeOps.parentNode(el);
+      // element may have already been removed due to v-html / v-text
+      if (isDef(parent)) {
+        nodeOps.removeChild(parent, el);
+      }
+    }
+
+    function isUnknownElement$$1 (vnode, inVPre) {
+      return (
+        !inVPre &&
+        !vnode.ns &&
+        !(
+          config.ignoredElements.length &&
+          config.ignoredElements.some(function (ignore) {
+            return isRegExp(ignore)
+              ? ignore.test(vnode.tag)
+              : ignore === vnode.tag
+          })
+        ) &&
+        config.isUnknownElement(vnode.tag)
+      )
+    }
+
+    var creatingElmInVPre = 0;
+
+    function createElm (
+      vnode,
+      insertedVnodeQueue,
+      parentElm,
+      refElm,
+      nested,
+      ownerArray,
+      index
+    ) {
+      if (isDef(vnode.elm) && isDef(ownerArray)) {
+        // This vnode was used in a previous render!
+        // now it's used as a new node, overwriting its elm would cause
+        // potential patch errors down the road when it's used as an insertion
+        // reference node. Instead, we clone the node on-demand before creating
+        // associated DOM element for it.
+        vnode = ownerArray[index] = cloneVNode(vnode);
+      }
+
+      vnode.isRootInsert = !nested; // for transition enter check
+      if (createComponent(vnode, insertedVnodeQueue, parentElm, refElm)) {
+        return
+      }
+
+      var data = vnode.data;
+      var children = vnode.children;
+      var tag = vnode.tag;
+      if (isDef(tag)) {
+        {
+          if (data && data.pre) {
+            creatingElmInVPre++;
+          }
+          if (isUnknownElement$$1(vnode, creatingElmInVPre)) {
+            warn(
+              'Unknown custom element: <' + tag + '> - did you ' +
+              'register the component correctly? For recursive components, ' +
+              'make sure to provide the "name" option.',
+              vnode.context
+            );
+          }
+        }
+
+        vnode.elm = vnode.ns
+          ? nodeOps.createElementNS(vnode.ns, tag)
+          : nodeOps.createElement(tag, vnode);
+        setScope(vnode);
+
+        /* istanbul ignore if */
+        {
+          createChildren(vnode, children, insertedVnodeQueue);
+          if (isDef(data)) {
+            invokeCreateHooks(vnode, insertedVnodeQueue);
+          }
+          insert(parentElm, vnode.elm, refElm);
+        }
+
+        if (data && data.pre) {
+          creatingElmInVPre--;
+        }
+      } else if (isTrue(vnode.isComment)) {
+        vnode.elm = nodeOps.createComment(vnode.text);
+        insert(parentElm, vnode.elm, refElm);
+      } else {
+        vnode.elm = nodeOps.createTextNode(vnode.text);
+        insert(parentElm, vnode.elm, refElm);
+      }
+    }
+
+    function createComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
+      var i = vnode.data;
+      if (isDef(i)) {
+        var isReactivated = isDef(vnode.componentInstance) && i.keepAlive;
+        if (isDef(i = i.hook) && isDef(i = i.init)) {
+          i(vnode, false /* hydrating */);
+        }
+        // after calling the init hook, if the vnode is a child component
+        // it should've created a child instance and mounted it. the child
+        // component also has set the placeholder vnode's elm.
+        // in that case we can just return the element and be done.
+        if (isDef(vnode.componentInstance)) {
+          initComponent(vnode, insertedVnodeQueue);
+          insert(parentElm, vnode.elm, refElm);
+          if (isTrue(isReactivated)) {
+            reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm);
+          }
+          return true
+        }
+      }
+    }
+
+    function initComponent (vnode, insertedVnodeQueue) {
+      if (isDef(vnode.data.pendingInsert)) {
+        insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert);
+        vnode.data.pendingInsert = null;
+      }
+      vnode.elm = vnode.componentInstance.$el;
+      if (isPatchable(vnode)) {
+        invokeCreateHooks(vnode, insertedVnodeQueue);
+        setScope(vnode);
+      } else {
+        // empty component root.
+        // skip all element-related modules except for ref (#3455)
+        registerRef(vnode);
+        // make sure to invoke the insert hook
+        insertedVnodeQueue.push(vnode);
+      }
+    }
+
+    function reactivateComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
+      var i;
+      // hack for #4339: a reactivated component with inner transition
+      // does not trigger because the inner node's created hooks are not called
+      // again. It's not ideal to involve module-specific logic in here but
+      // there doesn't seem to be a better way to do it.
+      var innerNode = vnode;
+      while (innerNode.componentInstance) {
+        innerNode = innerNode.componentInstance._vnode;
+        if (isDef(i = innerNode.data) && isDef(i = i.transition)) {
+          for (i = 0; i < cbs.activate.length; ++i) {
+            cbs.activate[i](emptyNode, innerNode);
+          }
+          insertedVnodeQueue.push(innerNode);
+          break
+        }
+      }
+      // unlike a newly created component,
+      // a reactivated keep-alive component doesn't insert itself
+      insert(parentElm, vnode.elm, refElm);
+    }
+
+    function insert (parent, elm, ref$$1) {
+      if (isDef(parent)) {
+        if (isDef(ref$$1)) {
+          if (nodeOps.parentNode(ref$$1) === parent) {
+            nodeOps.insertBefore(parent, elm, ref$$1);
+          }
+        } else {
+          nodeOps.appendChild(parent, elm);
+        }
+      }
+    }
+
+    function createChildren (vnode, children, insertedVnodeQueue) {
+      if (Array.isArray(children)) {
+        {
+          checkDuplicateKeys(children);
+        }
+        for (var i = 0; i < children.length; ++i) {
+          createElm(children[i], insertedVnodeQueue, vnode.elm, null, true, children, i);
+        }
+      } else if (isPrimitive(vnode.text)) {
+        nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(String(vnode.text)));
+      }
+    }
+
+    function isPatchable (vnode) {
+      while (vnode.componentInstance) {
+        vnode = vnode.componentInstance._vnode;
+      }
+      return isDef(vnode.tag)
+    }
+
+    function invokeCreateHooks (vnode, insertedVnodeQueue) {
+      for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
+        cbs.create[i$1](emptyNode, vnode);
+      }
+      i = vnode.data.hook; // Reuse variable
+      if (isDef(i)) {
+        if (isDef(i.create)) { i.create(emptyNode, vnode); }
+        if (isDef(i.insert)) { insertedVnodeQueue.push(vnode); }
+      }
+    }
+
+    // set scope id attribute for scoped CSS.
+    // this is implemented as a special case to avoid the overhead
+    // of going through the normal attribute patching process.
+    function setScope (vnode) {
+      var i;
+      if (isDef(i = vnode.fnScopeId)) {
+        nodeOps.setStyleScope(vnode.elm, i);
+      } else {
+        var ancestor = vnode;
+        while (ancestor) {
+          if (isDef(i = ancestor.context) && isDef(i = i.$options._scopeId)) {
+            nodeOps.setStyleScope(vnode.elm, i);
+          }
+          ancestor = ancestor.parent;
+        }
+      }
+      // for slot content they should also get the scopeId from the host instance.
+      if (isDef(i = activeInstance) &&
+        i !== vnode.context &&
+        i !== vnode.fnContext &&
+        isDef(i = i.$options._scopeId)
+      ) {
+        nodeOps.setStyleScope(vnode.elm, i);
+      }
+    }
+
+    function addVnodes (parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) {
+      for (; startIdx <= endIdx; ++startIdx) {
+        createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm, false, vnodes, startIdx);
+      }
+    }
+
+    function invokeDestroyHook (vnode) {
+      var i, j;
+      var data = vnode.data;
+      if (isDef(data)) {
+        if (isDef(i = data.hook) && isDef(i = i.destroy)) { i(vnode); }
+        for (i = 0; i < cbs.destroy.length; ++i) { cbs.destroy[i](vnode); }
+      }
+      if (isDef(i = vnode.children)) {
+        for (j = 0; j < vnode.children.length; ++j) {
+          invokeDestroyHook(vnode.children[j]);
+        }
+      }
+    }
+
+    function removeVnodes (vnodes, startIdx, endIdx) {
+      for (; startIdx <= endIdx; ++startIdx) {
+        var ch = vnodes[startIdx];
+        if (isDef(ch)) {
+          if (isDef(ch.tag)) {
+            removeAndInvokeRemoveHook(ch);
+            invokeDestroyHook(ch);
+          } else { // Text node
+            removeNode(ch.elm);
+          }
+        }
+      }
+    }
+
+    function removeAndInvokeRemoveHook (vnode, rm) {
+      if (isDef(rm) || isDef(vnode.data)) {
+        var i;
+        var listeners = cbs.remove.length + 1;
+        if (isDef(rm)) {
+          // we have a recursively passed down rm callback
+          // increase the listeners count
+          rm.listeners += listeners;
+        } else {
+          // directly removing
+          rm = createRmCb(vnode.elm, listeners);
+        }
+        // recursively invoke hooks on child component root node
+        if (isDef(i = vnode.componentInstance) && isDef(i = i._vnode) && isDef(i.data)) {
+          removeAndInvokeRemoveHook(i, rm);
+        }
+        for (i = 0; i < cbs.remove.length; ++i) {
+          cbs.remove[i](vnode, rm);
+        }
+        if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) {
+          i(vnode, rm);
+        } else {
+          rm();
+        }
+      } else {
+        removeNode(vnode.elm);
+      }
+    }
+
+    function updateChildren (parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) {
+      var oldStartIdx = 0;
+      var newStartIdx = 0;
+      var oldEndIdx = oldCh.length - 1;
+      var oldStartVnode = oldCh[0];
+      var oldEndVnode = oldCh[oldEndIdx];
+      var newEndIdx = newCh.length - 1;
+      var newStartVnode = newCh[0];
+      var newEndVnode = newCh[newEndIdx];
+      var oldKeyToIdx, idxInOld, vnodeToMove, refElm;
+
+      // removeOnly is a special flag used only by <transition-group>
+      // to ensure removed elements stay in correct relative positions
+      // during leaving transitions
+      var canMove = !removeOnly;
+
+      {
+        checkDuplicateKeys(newCh);
+      }
+
+      while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {
+        if (isUndef(oldStartVnode)) {
+          oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left
+        } else if (isUndef(oldEndVnode)) {
+          oldEndVnode = oldCh[--oldEndIdx];
+        } else if (sameVnode(oldStartVnode, newStartVnode)) {
+          patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
+          oldStartVnode = oldCh[++oldStartIdx];
+          newStartVnode = newCh[++newStartIdx];
+        } else if (sameVnode(oldEndVnode, newEndVnode)) {
+          patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
+          oldEndVnode = oldCh[--oldEndIdx];
+          newEndVnode = newCh[--newEndIdx];
+        } else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right
+          patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
+          canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm));
+          oldStartVnode = oldCh[++oldStartIdx];
+          newEndVnode = newCh[--newEndIdx];
+        } else if (sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left
+          patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
+          canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm);
+          oldEndVnode = oldCh[--oldEndIdx];
+          newStartVnode = newCh[++newStartIdx];
+        } else {
+          if (isUndef(oldKeyToIdx)) { oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx); }
+          idxInOld = isDef(newStartVnode.key)
+            ? oldKeyToIdx[newStartVnode.key]
+            : findIdxInOld(newStartVnode, oldCh, oldStartIdx, oldEndIdx);
+          if (isUndef(idxInOld)) { // New element
+            createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
+          } else {
+            vnodeToMove = oldCh[idxInOld];
+            if (sameVnode(vnodeToMove, newStartVnode)) {
+              patchVnode(vnodeToMove, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
+              oldCh[idxInOld] = undefined;
+              canMove && nodeOps.insertBefore(parentElm, vnodeToMove.elm, oldStartVnode.elm);
+            } else {
+              // same key but different element. treat as new element
+              createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
+            }
+          }
+          newStartVnode = newCh[++newStartIdx];
+        }
+      }
+      if (oldStartIdx > oldEndIdx) {
+        refElm = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
+        addVnodes(parentElm, refElm, newCh, newStartIdx, newEndIdx, insertedVnodeQueue);
+      } else if (newStartIdx > newEndIdx) {
+        removeVnodes(oldCh, oldStartIdx, oldEndIdx);
+      }
+    }
+
+    function checkDuplicateKeys (children) {
+      var seenKeys = {};
+      for (var i = 0; i < children.length; i++) {
+        var vnode = children[i];
+        var key = vnode.key;
+        if (isDef(key)) {
+          if (seenKeys[key]) {
+            warn(
+              ("Duplicate keys detected: '" + key + "'. This may cause an update error."),
+              vnode.context
+            );
+          } else {
+            seenKeys[key] = true;
+          }
+        }
+      }
+    }
+
+    function findIdxInOld (node, oldCh, start, end) {
+      for (var i = start; i < end; i++) {
+        var c = oldCh[i];
+        if (isDef(c) && sameVnode(node, c)) { return i }
+      }
+    }
+
+    function patchVnode (
+      oldVnode,
+      vnode,
+      insertedVnodeQueue,
+      ownerArray,
+      index,
+      removeOnly
+    ) {
+      if (oldVnode === vnode) {
+        return
+      }
+
+      if (isDef(vnode.elm) && isDef(ownerArray)) {
+        // clone reused vnode
+        vnode = ownerArray[index] = cloneVNode(vnode);
+      }
+
+      var elm = vnode.elm = oldVnode.elm;
+
+      if (isTrue(oldVnode.isAsyncPlaceholder)) {
+        if (isDef(vnode.asyncFactory.resolved)) {
+          hydrate(oldVnode.elm, vnode, insertedVnodeQueue);
+        } else {
+          vnode.isAsyncPlaceholder = true;
+        }
+        return
+      }
+
+      // reuse element for static trees.
+      // note we only do this if the vnode is cloned -
+      // if the new node is not cloned it means the render functions have been
+      // reset by the hot-reload-api and we need to do a proper re-render.
+      if (isTrue(vnode.isStatic) &&
+        isTrue(oldVnode.isStatic) &&
+        vnode.key === oldVnode.key &&
+        (isTrue(vnode.isCloned) || isTrue(vnode.isOnce))
+      ) {
+        vnode.componentInstance = oldVnode.componentInstance;
+        return
+      }
+
+      var i;
+      var data = vnode.data;
+      if (isDef(data) && isDef(i = data.hook) && isDef(i = i.prepatch)) {
+        i(oldVnode, vnode);
+      }
+
+      var oldCh = oldVnode.children;
+      var ch = vnode.children;
+      if (isDef(data) && isPatchable(vnode)) {
+        for (i = 0; i < cbs.update.length; ++i) { cbs.update[i](oldVnode, vnode); }
+        if (isDef(i = data.hook) && isDef(i = i.update)) { i(oldVnode, vnode); }
+      }
+      if (isUndef(vnode.text)) {
+        if (isDef(oldCh) && isDef(ch)) {
+          if (oldCh !== ch) { updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly); }
+        } else if (isDef(ch)) {
+          {
+            checkDuplicateKeys(ch);
+          }
+          if (isDef(oldVnode.text)) { nodeOps.setTextContent(elm, ''); }
+          addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue);
+        } else if (isDef(oldCh)) {
+          removeVnodes(oldCh, 0, oldCh.length - 1);
+        } else if (isDef(oldVnode.text)) {
+          nodeOps.setTextContent(elm, '');
+        }
+      } else if (oldVnode.text !== vnode.text) {
+        nodeOps.setTextContent(elm, vnode.text);
+      }
+      if (isDef(data)) {
+        if (isDef(i = data.hook) && isDef(i = i.postpatch)) { i(oldVnode, vnode); }
+      }
+    }
+
+    function invokeInsertHook (vnode, queue, initial) {
+      // delay insert hooks for component root nodes, invoke them after the
+      // element is really inserted
+      if (isTrue(initial) && isDef(vnode.parent)) {
+        vnode.parent.data.pendingInsert = queue;
+      } else {
+        for (var i = 0; i < queue.length; ++i) {
+          queue[i].data.hook.insert(queue[i]);
+        }
+      }
+    }
+
+    var hydrationBailed = false;
+    // list of modules that can skip create hook during hydration because they
+    // are already rendered on the client or has no need for initialization
+    // Note: style is excluded because it relies on initial clone for future
+    // deep updates (#7063).
+    var isRenderedModule = makeMap('attrs,class,staticClass,staticStyle,key');
+
+    // Note: this is a browser-only function so we can assume elms are DOM nodes.
+    function hydrate (elm, vnode, insertedVnodeQueue, inVPre) {
+      var i;
+      var tag = vnode.tag;
+      var data = vnode.data;
+      var children = vnode.children;
+      inVPre = inVPre || (data && data.pre);
+      vnode.elm = elm;
+
+      if (isTrue(vnode.isComment) && isDef(vnode.asyncFactory)) {
+        vnode.isAsyncPlaceholder = true;
+        return true
+      }
+      // assert node match
+      {
+        if (!assertNodeMatch(elm, vnode, inVPre)) {
+          return false
+        }
+      }
+      if (isDef(data)) {
+        if (isDef(i = data.hook) && isDef(i = i.init)) { i(vnode, true /* hydrating */); }
+        if (isDef(i = vnode.componentInstance)) {
+          // child component. it should have hydrated its own tree.
+          initComponent(vnode, insertedVnodeQueue);
+          return true
+        }
+      }
+      if (isDef(tag)) {
+        if (isDef(children)) {
+          // empty element, allow client to pick up and populate children
+          if (!elm.hasChildNodes()) {
+            createChildren(vnode, children, insertedVnodeQueue);
+          } else {
+            // v-html and domProps: innerHTML
+            if (isDef(i = data) && isDef(i = i.domProps) && isDef(i = i.innerHTML)) {
+              if (i !== elm.innerHTML) {
+                /* istanbul ignore if */
+                if (typeof console !== 'undefined' &&
+                  !hydrationBailed
+                ) {
+                  hydrationBailed = true;
+                  console.warn('Parent: ', elm);
+                  console.warn('server innerHTML: ', i);
+                  console.warn('client innerHTML: ', elm.innerHTML);
+                }
+                return false
+              }
+            } else {
+              // iterate and compare children lists
+              var childrenMatch = true;
+              var childNode = elm.firstChild;
+              for (var i$1 = 0; i$1 < children.length; i$1++) {
+                if (!childNode || !hydrate(childNode, children[i$1], insertedVnodeQueue, inVPre)) {
+                  childrenMatch = false;
+                  break
+                }
+                childNode = childNode.nextSibling;
+              }
+              // if childNode is not null, it means the actual childNodes list is
+              // longer than the virtual children list.
+              if (!childrenMatch || childNode) {
+                /* istanbul ignore if */
+                if (typeof console !== 'undefined' &&
+                  !hydrationBailed
+                ) {
+                  hydrationBailed = true;
+                  console.warn('Parent: ', elm);
+                  console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children);
+                }
+                return false
+              }
+            }
+          }
+        }
+        if (isDef(data)) {
+          var fullInvoke = false;
+          for (var key in data) {
+            if (!isRenderedModule(key)) {
+              fullInvoke = true;
+              invokeCreateHooks(vnode, insertedVnodeQueue);
+              break
+            }
+          }
+          if (!fullInvoke && data['class']) {
+            // ensure collecting deps for deep class bindings for future updates
+            traverse(data['class']);
+          }
+        }
+      } else if (elm.data !== vnode.text) {
+        elm.data = vnode.text;
+      }
+      return true
+    }
+
+    function assertNodeMatch (node, vnode, inVPre) {
+      if (isDef(vnode.tag)) {
+        return vnode.tag.indexOf('vue-component') === 0 || (
+          !isUnknownElement$$1(vnode, inVPre) &&
+          vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase())
+        )
+      } else {
+        return node.nodeType === (vnode.isComment ? 8 : 3)
+      }
+    }
+
+    return function patch (oldVnode, vnode, hydrating, removeOnly) {
+      if (isUndef(vnode)) {
+        if (isDef(oldVnode)) { invokeDestroyHook(oldVnode); }
+        return
+      }
+
+      var isInitialPatch = false;
+      var insertedVnodeQueue = [];
+
+      if (isUndef(oldVnode)) {
+        // empty mount (likely as component), create new root element
+        isInitialPatch = true;
+        createElm(vnode, insertedVnodeQueue);
+      } else {
+        var isRealElement = isDef(oldVnode.nodeType);
+        if (!isRealElement && sameVnode(oldVnode, vnode)) {
+          // patch existing root node
+          patchVnode(oldVnode, vnode, insertedVnodeQueue, null, null, removeOnly);
+        } else {
+          if (isRealElement) {
+            // mounting to a real element
+            // check if this is server-rendered content and if we can perform
+            // a successful hydration.
+            if (oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) {
+              oldVnode.removeAttribute(SSR_ATTR);
+              hydrating = true;
+            }
+            if (isTrue(hydrating)) {
+              if (hydrate(oldVnode, vnode, insertedVnodeQueue)) {
+                invokeInsertHook(vnode, insertedVnodeQueue, true);
+                return oldVnode
+              } else {
+                warn(
+                  'The client-side rendered virtual DOM tree is not matching ' +
+                  'server-rendered content. This is likely caused by incorrect ' +
+                  'HTML markup, for example nesting block-level elements inside ' +
+                  '<p>, or missing <tbody>. Bailing hydration and performing ' +
+                  'full client-side render.'
+                );
+              }
+            }
+            // either not server-rendered, or hydration failed.
+            // create an empty node and replace it
+            oldVnode = emptyNodeAt(oldVnode);
+          }
+
+          // replacing existing element
+          var oldElm = oldVnode.elm;
+          var parentElm = nodeOps.parentNode(oldElm);
+
+          // create new node
+          createElm(
+            vnode,
+            insertedVnodeQueue,
+            // extremely rare edge case: do not insert if old element is in a
+            // leaving transition. Only happens when combining transition +
+            // keep-alive + HOCs. (#4590)
+            oldElm._leaveCb ? null : parentElm,
+            nodeOps.nextSibling(oldElm)
+          );
+
+          // update parent placeholder node element, recursively
+          if (isDef(vnode.parent)) {
+            var ancestor = vnode.parent;
+            var patchable = isPatchable(vnode);
+            while (ancestor) {
+              for (var i = 0; i < cbs.destroy.length; ++i) {
+                cbs.destroy[i](ancestor);
+              }
+              ancestor.elm = vnode.elm;
+              if (patchable) {
+                for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
+                  cbs.create[i$1](emptyNode, ancestor);
+                }
+                // #6513
+                // invoke insert hooks that may have been merged by create hooks.
+                // e.g. for directives that uses the "inserted" hook.
+                var insert = ancestor.data.hook.insert;
+                if (insert.merged) {
+                  // start at index 1 to avoid re-invoking component mounted hook
+                  for (var i$2 = 1; i$2 < insert.fns.length; i$2++) {
+                    insert.fns[i$2]();
+                  }
+                }
+              } else {
+                registerRef(ancestor);
+              }
+              ancestor = ancestor.parent;
+            }
+          }
+
+          // destroy old node
+          if (isDef(parentElm)) {
+            removeVnodes([oldVnode], 0, 0);
+          } else if (isDef(oldVnode.tag)) {
+            invokeDestroyHook(oldVnode);
+          }
+        }
+      }
+
+      invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch);
+      return vnode.elm
+    }
+  }
+
+  /*  */
+
+  var directives = {
+    create: updateDirectives,
+    update: updateDirectives,
+    destroy: function unbindDirectives (vnode) {
+      updateDirectives(vnode, emptyNode);
+    }
+  };
+
+  function updateDirectives (oldVnode, vnode) {
+    if (oldVnode.data.directives || vnode.data.directives) {
+      _update(oldVnode, vnode);
+    }
+  }
+
+  function _update (oldVnode, vnode) {
+    var isCreate = oldVnode === emptyNode;
+    var isDestroy = vnode === emptyNode;
+    var oldDirs = normalizeDirectives$1(oldVnode.data.directives, oldVnode.context);
+    var newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context);
+
+    var dirsWithInsert = [];
+    var dirsWithPostpatch = [];
+
+    var key, oldDir, dir;
+    for (key in newDirs) {
+      oldDir = oldDirs[key];
+      dir = newDirs[key];
+      if (!oldDir) {
+        // new directive, bind
+        callHook$1(dir, 'bind', vnode, oldVnode);
+        if (dir.def && dir.def.inserted) {
+          dirsWithInsert.push(dir);
+        }
+      } else {
+        // existing directive, update
+        dir.oldValue = oldDir.value;
+        dir.oldArg = oldDir.arg;
+        callHook$1(dir, 'update', vnode, oldVnode);
+        if (dir.def && dir.def.componentUpdated) {
+          dirsWithPostpatch.push(dir);
+        }
+      }
+    }
+
+    if (dirsWithInsert.length) {
+      var callInsert = function () {
+        for (var i = 0; i < dirsWithInsert.length; i++) {
+          callHook$1(dirsWithInsert[i], 'inserted', vnode, oldVnode);
+        }
+      };
+      if (isCreate) {
+        mergeVNodeHook(vnode, 'insert', callInsert);
+      } else {
+        callInsert();
+      }
+    }
+
+    if (dirsWithPostpatch.length) {
+      mergeVNodeHook(vnode, 'postpatch', function () {
+        for (var i = 0; i < dirsWithPostpatch.length; i++) {
+          callHook$1(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode);
+        }
+      });
+    }
+
+    if (!isCreate) {
+      for (key in oldDirs) {
+        if (!newDirs[key]) {
+          // no longer present, unbind
+          callHook$1(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy);
+        }
+      }
+    }
+  }
+
+  var emptyModifiers = Object.create(null);
+
+  function normalizeDirectives$1 (
+    dirs,
+    vm
+  ) {
+    var res = Object.create(null);
+    if (!dirs) {
+      // $flow-disable-line
+      return res
+    }
+    var i, dir;
+    for (i = 0; i < dirs.length; i++) {
+      dir = dirs[i];
+      if (!dir.modifiers) {
+        // $flow-disable-line
+        dir.modifiers = emptyModifiers;
+      }
+      res[getRawDirName(dir)] = dir;
+      dir.def = resolveAsset(vm.$options, 'directives', dir.name, true);
+    }
+    // $flow-disable-line
+    return res
+  }
+
+  function getRawDirName (dir) {
+    return dir.rawName || ((dir.name) + "." + (Object.keys(dir.modifiers || {}).join('.')))
+  }
+
+  function callHook$1 (dir, hook, vnode, oldVnode, isDestroy) {
+    var fn = dir.def && dir.def[hook];
+    if (fn) {
+      try {
+        fn(vnode.elm, dir, vnode, oldVnode, isDestroy);
+      } catch (e) {
+        handleError(e, vnode.context, ("directive " + (dir.name) + " " + hook + " hook"));
+      }
+    }
+  }
+
+  var baseModules = [
+    ref,
+    directives
+  ];
+
+  /*  */
+
+  function updateAttrs (oldVnode, vnode) {
+    var opts = vnode.componentOptions;
+    if (isDef(opts) && opts.Ctor.options.inheritAttrs === false) {
+      return
+    }
+    if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {
+      return
+    }
+    var key, cur, old;
+    var elm = vnode.elm;
+    var oldAttrs = oldVnode.data.attrs || {};
+    var attrs = vnode.data.attrs || {};
+    // clone observed objects, as the user probably wants to mutate it
+    if (isDef(attrs.__ob__)) {
+      attrs = vnode.data.attrs = extend({}, attrs);
+    }
+
+    for (key in attrs) {
+      cur = attrs[key];
+      old = oldAttrs[key];
+      if (old !== cur) {
+        setAttr(elm, key, cur);
+      }
+    }
+    // #4391: in IE9, setting type can reset value for input[type=radio]
+    // #6666: IE/Edge forces progress value down to 1 before setting a max
+    /* istanbul ignore if */
+    if ((isIE || isEdge) && attrs.value !== oldAttrs.value) {
+      setAttr(elm, 'value', attrs.value);
+    }
+    for (key in oldAttrs) {
+      if (isUndef(attrs[key])) {
+        if (isXlink(key)) {
+          elm.removeAttributeNS(xlinkNS, getXlinkProp(key));
+        } else if (!isEnumeratedAttr(key)) {
+          elm.removeAttribute(key);
+        }
+      }
+    }
+  }
+
+  function setAttr (el, key, value) {
+    if (el.tagName.indexOf('-') > -1) {
+      baseSetAttr(el, key, value);
+    } else if (isBooleanAttr(key)) {
+      // set attribute for blank value
+      // e.g. <option disabled>Select one</option>
+      if (isFalsyAttrValue(value)) {
+        el.removeAttribute(key);
+      } else {
+        // technically allowfullscreen is a boolean attribute for <iframe>,
+        // but Flash expects a value of "true" when used on <embed> tag
+        value = key === 'allowfullscreen' && el.tagName === 'EMBED'
+          ? 'true'
+          : key;
+        el.setAttribute(key, value);
+      }
+    } else if (isEnumeratedAttr(key)) {
+      el.setAttribute(key, convertEnumeratedValue(key, value));
+    } else if (isXlink(key)) {
+      if (isFalsyAttrValue(value)) {
+        el.removeAttributeNS(xlinkNS, getXlinkProp(key));
+      } else {
+        el.setAttributeNS(xlinkNS, key, value);
+      }
+    } else {
+      baseSetAttr(el, key, value);
+    }
+  }
+
+  function baseSetAttr (el, key, value) {
+    if (isFalsyAttrValue(value)) {
+      el.removeAttribute(key);
+    } else {
+      // #7138: IE10 & 11 fires input event when setting placeholder on
+      // <textarea>... block the first input event and remove the blocker
+      // immediately.
+      /* istanbul ignore if */
+      if (
+        isIE && !isIE9 &&
+        el.tagName === 'TEXTAREA' &&
+        key === 'placeholder' && value !== '' && !el.__ieph
+      ) {
+        var blocker = function (e) {
+          e.stopImmediatePropagation();
+          el.removeEventListener('input', blocker);
+        };
+        el.addEventListener('input', blocker);
+        // $flow-disable-line
+        el.__ieph = true; /* IE placeholder patched */
+      }
+      el.setAttribute(key, value);
+    }
+  }
+
+  var attrs = {
+    create: updateAttrs,
+    update: updateAttrs
+  };
+
+  /*  */
+
+  function updateClass (oldVnode, vnode) {
+    var el = vnode.elm;
+    var data = vnode.data;
+    var oldData = oldVnode.data;
+    if (
+      isUndef(data.staticClass) &&
+      isUndef(data.class) && (
+        isUndef(oldData) || (
+          isUndef(oldData.staticClass) &&
+          isUndef(oldData.class)
+        )
+      )
+    ) {
+      return
+    }
+
+    var cls = genClassForVnode(vnode);
+
+    // handle transition classes
+    var transitionClass = el._transitionClasses;
+    if (isDef(transitionClass)) {
+      cls = concat(cls, stringifyClass(transitionClass));
+    }
+
+    // set the class
+    if (cls !== el._prevClass) {
+      el.setAttribute('class', cls);
+      el._prevClass = cls;
+    }
+  }
+
+  var klass = {
+    create: updateClass,
+    update: updateClass
+  };
+
+  /*  */
+
+  var validDivisionCharRE = /[\w).+\-_$\]]/;
+
+  function parseFilters (exp) {
+    var inSingle = false;
+    var inDouble = false;
+    var inTemplateString = false;
+    var inRegex = false;
+    var curly = 0;
+    var square = 0;
+    var paren = 0;
+    var lastFilterIndex = 0;
+    var c, prev, i, expression, filters;
+
+    for (i = 0; i < exp.length; i++) {
+      prev = c;
+      c = exp.charCodeAt(i);
+      if (inSingle) {
+        if (c === 0x27 && prev !== 0x5C) { inSingle = false; }
+      } else if (inDouble) {
+        if (c === 0x22 && prev !== 0x5C) { inDouble = false; }
+      } else if (inTemplateString) {
+        if (c === 0x60 && prev !== 0x5C) { inTemplateString = false; }
+      } else if (inRegex) {
+        if (c === 0x2f && prev !== 0x5C) { inRegex = false; }
+      } else if (
+        c === 0x7C && // pipe
+        exp.charCodeAt(i + 1) !== 0x7C &&
+        exp.charCodeAt(i - 1) !== 0x7C &&
+        !curly && !square && !paren
+      ) {
+        if (expression === undefined) {
+          // first filter, end of expression
+          lastFilterIndex = i + 1;
+          expression = exp.slice(0, i).trim();
+        } else {
+          pushFilter();
+        }
+      } else {
+        switch (c) {
+          case 0x22: inDouble = true; break         // "
+          case 0x27: inSingle = true; break         // '
+          case 0x60: inTemplateString = true; break // `
+          case 0x28: paren++; break                 // (
+          case 0x29: paren--; break                 // )
+          case 0x5B: square++; break                // [
+          case 0x5D: square--; break                // ]
+          case 0x7B: curly++; break                 // {
+          case 0x7D: curly--; break                 // }
+        }
+        if (c === 0x2f) { // /
+          var j = i - 1;
+          var p = (void 0);
+          // find first non-whitespace prev char
+          for (; j >= 0; j--) {
+            p = exp.charAt(j);
+            if (p !== ' ') { break }
+          }
+          if (!p || !validDivisionCharRE.test(p)) {
+            inRegex = true;
+          }
+        }
+      }
+    }
+
+    if (expression === undefined) {
+      expression = exp.slice(0, i).trim();
+    } else if (lastFilterIndex !== 0) {
+      pushFilter();
+    }
+
+    function pushFilter () {
+      (filters || (filters = [])).push(exp.slice(lastFilterIndex, i).trim());
+      lastFilterIndex = i + 1;
+    }
+
+    if (filters) {
+      for (i = 0; i < filters.length; i++) {
+        expression = wrapFilter(expression, filters[i]);
+      }
+    }
+
+    return expression
+  }
+
+  function wrapFilter (exp, filter) {
+    var i = filter.indexOf('(');
+    if (i < 0) {
+      // _f: resolveFilter
+      return ("_f(\"" + filter + "\")(" + exp + ")")
+    } else {
+      var name = filter.slice(0, i);
+      var args = filter.slice(i + 1);
+      return ("_f(\"" + name + "\")(" + exp + (args !== ')' ? ',' + args : args))
+    }
+  }
+
+  /*  */
+
+
+
+  /* eslint-disable no-unused-vars */
+  function baseWarn (msg, range) {
+    console.error(("[Vue compiler]: " + msg));
+  }
+  /* eslint-enable no-unused-vars */
+
+  function pluckModuleFunction (
+    modules,
+    key
+  ) {
+    return modules
+      ? modules.map(function (m) { return m[key]; }).filter(function (_) { return _; })
+      : []
+  }
+
+  function addProp (el, name, value, range, dynamic) {
+    (el.props || (el.props = [])).push(rangeSetItem({ name: name, value: value, dynamic: dynamic }, range));
+    el.plain = false;
+  }
+
+  function addAttr (el, name, value, range, dynamic) {
+    var attrs = dynamic
+      ? (el.dynamicAttrs || (el.dynamicAttrs = []))
+      : (el.attrs || (el.attrs = []));
+    attrs.push(rangeSetItem({ name: name, value: value, dynamic: dynamic }, range));
+    el.plain = false;
+  }
+
+  // add a raw attr (use this in preTransforms)
+  function addRawAttr (el, name, value, range) {
+    el.attrsMap[name] = value;
+    el.attrsList.push(rangeSetItem({ name: name, value: value }, range));
+  }
+
+  function addDirective (
+    el,
+    name,
+    rawName,
+    value,
+    arg,
+    isDynamicArg,
+    modifiers,
+    range
+  ) {
+    (el.directives || (el.directives = [])).push(rangeSetItem({
+      name: name,
+      rawName: rawName,
+      value: value,
+      arg: arg,
+      isDynamicArg: isDynamicArg,
+      modifiers: modifiers
+    }, range));
+    el.plain = false;
+  }
+
+  function prependModifierMarker (symbol, name, dynamic) {
+    return dynamic
+      ? ("_p(" + name + ",\"" + symbol + "\")")
+      : symbol + name // mark the event as captured
+  }
+
+  function addHandler (
+    el,
+    name,
+    value,
+    modifiers,
+    important,
+    warn,
+    range,
+    dynamic
+  ) {
+    modifiers = modifiers || emptyObject;
+    // warn prevent and passive modifier
+    /* istanbul ignore if */
+    if (
+      warn &&
+      modifiers.prevent && modifiers.passive
+    ) {
+      warn(
+        'passive and prevent can\'t be used together. ' +
+        'Passive handler can\'t prevent default event.',
+        range
+      );
+    }
+
+    // normalize click.right and click.middle since they don't actually fire
+    // this is technically browser-specific, but at least for now browsers are
+    // the only target envs that have right/middle clicks.
+    if (modifiers.right) {
+      if (dynamic) {
+        name = "(" + name + ")==='click'?'contextmenu':(" + name + ")";
+      } else if (name === 'click') {
+        name = 'contextmenu';
+        delete modifiers.right;
+      }
+    } else if (modifiers.middle) {
+      if (dynamic) {
+        name = "(" + name + ")==='click'?'mouseup':(" + name + ")";
+      } else if (name === 'click') {
+        name = 'mouseup';
+      }
+    }
+
+    // check capture modifier
+    if (modifiers.capture) {
+      delete modifiers.capture;
+      name = prependModifierMarker('!', name, dynamic);
+    }
+    if (modifiers.once) {
+      delete modifiers.once;
+      name = prependModifierMarker('~', name, dynamic);
+    }
+    /* istanbul ignore if */
+    if (modifiers.passive) {
+      delete modifiers.passive;
+      name = prependModifierMarker('&', name, dynamic);
+    }
+
+    var events;
+    if (modifiers.native) {
+      delete modifiers.native;
+      events = el.nativeEvents || (el.nativeEvents = {});
+    } else {
+      events = el.events || (el.events = {});
+    }
+
+    var newHandler = rangeSetItem({ value: value.trim(), dynamic: dynamic }, range);
+    if (modifiers !== emptyObject) {
+      newHandler.modifiers = modifiers;
+    }
+
+    var handlers = events[name];
+    /* istanbul ignore if */
+    if (Array.isArray(handlers)) {
+      important ? handlers.unshift(newHandler) : handlers.push(newHandler);
+    } else if (handlers) {
+      events[name] = important ? [newHandler, handlers] : [handlers, newHandler];
+    } else {
+      events[name] = newHandler;
+    }
+
+    el.plain = false;
+  }
+
+  function getRawBindingAttr (
+    el,
+    name
+  ) {
+    return el.rawAttrsMap[':' + name] ||
+      el.rawAttrsMap['v-bind:' + name] ||
+      el.rawAttrsMap[name]
+  }
+
+  function getBindingAttr (
+    el,
+    name,
+    getStatic
+  ) {
+    var dynamicValue =
+      getAndRemoveAttr(el, ':' + name) ||
+      getAndRemoveAttr(el, 'v-bind:' + name);
+    if (dynamicValue != null) {
+      return parseFilters(dynamicValue)
+    } else if (getStatic !== false) {
+      var staticValue = getAndRemoveAttr(el, name);
+      if (staticValue != null) {
+        return JSON.stringify(staticValue)
+      }
+    }
+  }
+
+  // note: this only removes the attr from the Array (attrsList) so that it
+  // doesn't get processed by processAttrs.
+  // By default it does NOT remove it from the map (attrsMap) because the map is
+  // needed during codegen.
+  function getAndRemoveAttr (
+    el,
+    name,
+    removeFromMap
+  ) {
+    var val;
+    if ((val = el.attrsMap[name]) != null) {
+      var list = el.attrsList;
+      for (var i = 0, l = list.length; i < l; i++) {
+        if (list[i].name === name) {
+          list.splice(i, 1);
+          break
+        }
+      }
+    }
+    if (removeFromMap) {
+      delete el.attrsMap[name];
+    }
+    return val
+  }
+
+  function getAndRemoveAttrByRegex (
+    el,
+    name
+  ) {
+    var list = el.attrsList;
+    for (var i = 0, l = list.length; i < l; i++) {
+      var attr = list[i];
+      if (name.test(attr.name)) {
+        list.splice(i, 1);
+        return attr
+      }
+    }
+  }
+
+  function rangeSetItem (
+    item,
+    range
+  ) {
+    if (range) {
+      if (range.start != null) {
+        item.start = range.start;
+      }
+      if (range.end != null) {
+        item.end = range.end;
+      }
+    }
+    return item
+  }
+
+  /*  */
+
+  /**
+   * Cross-platform code generation for component v-model
+   */
+  function genComponentModel (
+    el,
+    value,
+    modifiers
+  ) {
+    var ref = modifiers || {};
+    var number = ref.number;
+    var trim = ref.trim;
+
+    var baseValueExpression = '$$v';
+    var valueExpression = baseValueExpression;
+    if (trim) {
+      valueExpression =
+        "(typeof " + baseValueExpression + " === 'string'" +
+        "? " + baseValueExpression + ".trim()" +
+        ": " + baseValueExpression + ")";
+    }
+    if (number) {
+      valueExpression = "_n(" + valueExpression + ")";
+    }
+    var assignment = genAssignmentCode(value, valueExpression);
+
+    el.model = {
+      value: ("(" + value + ")"),
+      expression: JSON.stringify(value),
+      callback: ("function (" + baseValueExpression + ") {" + assignment + "}")
+    };
+  }
+
+  /**
+   * Cross-platform codegen helper for generating v-model value assignment code.
+   */
+  function genAssignmentCode (
+    value,
+    assignment
+  ) {
+    var res = parseModel(value);
+    if (res.key === null) {
+      return (value + "=" + assignment)
+    } else {
+      return ("$set(" + (res.exp) + ", " + (res.key) + ", " + assignment + ")")
+    }
+  }
+
+  /**
+   * Parse a v-model expression into a base path and a final key segment.
+   * Handles both dot-path and possible square brackets.
+   *
+   * Possible cases:
+   *
+   * - test
+   * - test[key]
+   * - test[test1[key]]
+   * - test["a"][key]
+   * - xxx.test[a[a].test1[key]]
+   * - test.xxx.a["asa"][test1[key]]
+   *
+   */
+
+  var len, str, chr, index$1, expressionPos, expressionEndPos;
+
+
+
+  function parseModel (val) {
+    // Fix https://github.com/vuejs/vue/pull/7730
+    // allow v-model="obj.val " (trailing whitespace)
+    val = val.trim();
+    len = val.length;
+
+    if (val.indexOf('[') < 0 || val.lastIndexOf(']') < len - 1) {
+      index$1 = val.lastIndexOf('.');
+      if (index$1 > -1) {
+        return {
+          exp: val.slice(0, index$1),
+          key: '"' + val.slice(index$1 + 1) + '"'
+        }
+      } else {
+        return {
+          exp: val,
+          key: null
+        }
+      }
+    }
+
+    str = val;
+    index$1 = expressionPos = expressionEndPos = 0;
+
+    while (!eof()) {
+      chr = next();
+      /* istanbul ignore if */
+      if (isStringStart(chr)) {
+        parseString(chr);
+      } else if (chr === 0x5B) {
+        parseBracket(chr);
+      }
+    }
+
+    return {
+      exp: val.slice(0, expressionPos),
+      key: val.slice(expressionPos + 1, expressionEndPos)
+    }
+  }
+
+  function next () {
+    return str.charCodeAt(++index$1)
+  }
+
+  function eof () {
+    return index$1 >= len
+  }
+
+  function isStringStart (chr) {
+    return chr === 0x22 || chr === 0x27
+  }
+
+  function parseBracket (chr) {
+    var inBracket = 1;
+    expressionPos = index$1;
+    while (!eof()) {
+      chr = next();
+      if (isStringStart(chr)) {
+        parseString(chr);
+        continue
+      }
+      if (chr === 0x5B) { inBracket++; }
+      if (chr === 0x5D) { inBracket--; }
+      if (inBracket === 0) {
+        expressionEndPos = index$1;
+        break
+      }
+    }
+  }
+
+  function parseString (chr) {
+    var stringQuote = chr;
+    while (!eof()) {
+      chr = next();
+      if (chr === stringQuote) {
+        break
+      }
+    }
+  }
+
+  /*  */
+
+  var warn$1;
+
+  // in some cases, the event used has to be determined at runtime
+  // so we used some reserved tokens during compile.
+  var RANGE_TOKEN = '__r';
+  var CHECKBOX_RADIO_TOKEN = '__c';
+
+  function model (
+    el,
+    dir,
+    _warn
+  ) {
+    warn$1 = _warn;
+    var value = dir.value;
+    var modifiers = dir.modifiers;
+    var tag = el.tag;
+    var type = el.attrsMap.type;
+
+    {
+      // inputs with type="file" are read only and setting the input's
+      // value will throw an error.
+      if (tag === 'input' && type === 'file') {
+        warn$1(
+          "<" + (el.tag) + " v-model=\"" + value + "\" type=\"file\">:\n" +
+          "File inputs are read only. Use a v-on:change listener instead.",
+          el.rawAttrsMap['v-model']
+        );
+      }
+    }
+
+    if (el.component) {
+      genComponentModel(el, value, modifiers);
+      // component v-model doesn't need extra runtime
+      return false
+    } else if (tag === 'select') {
+      genSelect(el, value, modifiers);
+    } else if (tag === 'input' && type === 'checkbox') {
+      genCheckboxModel(el, value, modifiers);
+    } else if (tag === 'input' && type === 'radio') {
+      genRadioModel(el, value, modifiers);
+    } else if (tag === 'input' || tag === 'textarea') {
+      genDefaultModel(el, value, modifiers);
+    } else if (!config.isReservedTag(tag)) {
+      genComponentModel(el, value, modifiers);
+      // component v-model doesn't need extra runtime
+      return false
+    } else {
+      warn$1(
+        "<" + (el.tag) + " v-model=\"" + value + "\">: " +
+        "v-model is not supported on this element type. " +
+        'If you are working with contenteditable, it\'s recommended to ' +
+        'wrap a library dedicated for that purpose inside a custom component.',
+        el.rawAttrsMap['v-model']
+      );
+    }
+
+    // ensure runtime directive metadata
+    return true
+  }
+
+  function genCheckboxModel (
+    el,
+    value,
+    modifiers
+  ) {
+    var number = modifiers && modifiers.number;
+    var valueBinding = getBindingAttr(el, 'value') || 'null';
+    var trueValueBinding = getBindingAttr(el, 'true-value') || 'true';
+    var falseValueBinding = getBindingAttr(el, 'false-value') || 'false';
+    addProp(el, 'checked',
+      "Array.isArray(" + value + ")" +
+      "?_i(" + value + "," + valueBinding + ")>-1" + (
+        trueValueBinding === 'true'
+          ? (":(" + value + ")")
+          : (":_q(" + value + "," + trueValueBinding + ")")
+      )
+    );
+    addHandler(el, 'change',
+      "var $$a=" + value + "," +
+          '$$el=$event.target,' +
+          "$$c=$$el.checked?(" + trueValueBinding + "):(" + falseValueBinding + ");" +
+      'if(Array.isArray($$a)){' +
+        "var $$v=" + (number ? '_n(' + valueBinding + ')' : valueBinding) + "," +
+            '$$i=_i($$a,$$v);' +
+        "if($$el.checked){$$i<0&&(" + (genAssignmentCode(value, '$$a.concat([$$v])')) + ")}" +
+        "else{$$i>-1&&(" + (genAssignmentCode(value, '$$a.slice(0,$$i).concat($$a.slice($$i+1))')) + ")}" +
+      "}else{" + (genAssignmentCode(value, '$$c')) + "}",
+      null, true
+    );
+  }
+
+  function genRadioModel (
+    el,
+    value,
+    modifiers
+  ) {
+    var number = modifiers && modifiers.number;
+    var valueBinding = getBindingAttr(el, 'value') || 'null';
+    valueBinding = number ? ("_n(" + valueBinding + ")") : valueBinding;
+    addProp(el, 'checked', ("_q(" + value + "," + valueBinding + ")"));
+    addHandler(el, 'change', genAssignmentCode(value, valueBinding), null, true);
+  }
+
+  function genSelect (
+    el,
+    value,
+    modifiers
+  ) {
+    var number = modifiers && modifiers.number;
+    var selectedVal = "Array.prototype.filter" +
+      ".call($event.target.options,function(o){return o.selected})" +
+      ".map(function(o){var val = \"_value\" in o ? o._value : o.value;" +
+      "return " + (number ? '_n(val)' : 'val') + "})";
+
+    var assignment = '$event.target.multiple ? $$selectedVal : $$selectedVal[0]';
+    var code = "var $$selectedVal = " + selectedVal + ";";
+    code = code + " " + (genAssignmentCode(value, assignment));
+    addHandler(el, 'change', code, null, true);
+  }
+
+  function genDefaultModel (
+    el,
+    value,
+    modifiers
+  ) {
+    var type = el.attrsMap.type;
+
+    // warn if v-bind:value conflicts with v-model
+    // except for inputs with v-bind:type
+    {
+      var value$1 = el.attrsMap['v-bind:value'] || el.attrsMap[':value'];
+      var typeBinding = el.attrsMap['v-bind:type'] || el.attrsMap[':type'];
+      if (value$1 && !typeBinding) {
+        var binding = el.attrsMap['v-bind:value'] ? 'v-bind:value' : ':value';
+        warn$1(
+          binding + "=\"" + value$1 + "\" conflicts with v-model on the same element " +
+          'because the latter already expands to a value binding internally',
+          el.rawAttrsMap[binding]
+        );
+      }
+    }
+
+    var ref = modifiers || {};
+    var lazy = ref.lazy;
+    var number = ref.number;
+    var trim = ref.trim;
+    var needCompositionGuard = !lazy && type !== 'range';
+    var event = lazy
+      ? 'change'
+      : type === 'range'
+        ? RANGE_TOKEN
+        : 'input';
+
+    var valueExpression = '$event.target.value';
+    if (trim) {
+      valueExpression = "$event.target.value.trim()";
+    }
+    if (number) {
+      valueExpression = "_n(" + valueExpression + ")";
+    }
+
+    var code = genAssignmentCode(value, valueExpression);
+    if (needCompositionGuard) {
+      code = "if($event.target.composing)return;" + code;
+    }
+
+    addProp(el, 'value', ("(" + value + ")"));
+    addHandler(el, event, code, null, true);
+    if (trim || number) {
+      addHandler(el, 'blur', '$forceUpdate()');
+    }
+  }
+
+  /*  */
+
+  // normalize v-model event tokens that can only be determined at runtime.
+  // it's important to place the event as the first in the array because
+  // the whole point is ensuring the v-model callback gets called before
+  // user-attached handlers.
+  function normalizeEvents (on) {
+    /* istanbul ignore if */
+    if (isDef(on[RANGE_TOKEN])) {
+      // IE input[type=range] only supports `change` event
+      var event = isIE ? 'change' : 'input';
+      on[event] = [].concat(on[RANGE_TOKEN], on[event] || []);
+      delete on[RANGE_TOKEN];
+    }
+    // This was originally intended to fix #4521 but no longer necessary
+    // after 2.5. Keeping it for backwards compat with generated code from < 2.4
+    /* istanbul ignore if */
+    if (isDef(on[CHECKBOX_RADIO_TOKEN])) {
+      on.change = [].concat(on[CHECKBOX_RADIO_TOKEN], on.change || []);
+      delete on[CHECKBOX_RADIO_TOKEN];
+    }
+  }
+
+  var target$1;
+
+  function createOnceHandler$1 (event, handler, capture) {
+    var _target = target$1; // save current target element in closure
+    return function onceHandler () {
+      var res = handler.apply(null, arguments);
+      if (res !== null) {
+        remove$2(event, onceHandler, capture, _target);
+      }
+    }
+  }
+
+  // #9446: Firefox <= 53 (in particular, ESR 52) has incorrect Event.timeStamp
+  // implementation and does not fire microtasks in between event propagation, so
+  // safe to exclude.
+  var useMicrotaskFix = isUsingMicroTask && !(isFF && Number(isFF[1]) <= 53);
+
+  function add$1 (
+    name,
+    handler,
+    capture,
+    passive
+  ) {
+    // async edge case #6566: inner click event triggers patch, event handler
+    // attached to outer element during patch, and triggered again. This
+    // happens because browsers fire microtask ticks between event propagation.
+    // the solution is simple: we save the timestamp when a handler is attached,
+    // and the handler would only fire if the event passed to it was fired
+    // AFTER it was attached.
+    if (useMicrotaskFix) {
+      var attachedTimestamp = currentFlushTimestamp;
+      var original = handler;
+      handler = original._wrapper = function (e) {
+        if (
+          // no bubbling, should always fire.
+          // this is just a safety net in case event.timeStamp is unreliable in
+          // certain weird environments...
+          e.target === e.currentTarget ||
+          // event is fired after handler attachment
+          e.timeStamp >= attachedTimestamp ||
+          // bail for environments that have buggy event.timeStamp implementations
+          // #9462 iOS 9 bug: event.timeStamp is 0 after history.pushState
+          // #9681 QtWebEngine event.timeStamp is negative value
+          e.timeStamp <= 0 ||
+          // #9448 bail if event is fired in another document in a multi-page
+          // electron/nw.js app, since event.timeStamp will be using a different
+          // starting reference
+          e.target.ownerDocument !== document
+        ) {
+          return original.apply(this, arguments)
+        }
+      };
+    }
+    target$1.addEventListener(
+      name,
+      handler,
+      supportsPassive
+        ? { capture: capture, passive: passive }
+        : capture
+    );
+  }
+
+  function remove$2 (
+    name,
+    handler,
+    capture,
+    _target
+  ) {
+    (_target || target$1).removeEventListener(
+      name,
+      handler._wrapper || handler,
+      capture
+    );
+  }
+
+  function updateDOMListeners (oldVnode, vnode) {
+    if (isUndef(oldVnode.data.on) && isUndef(vnode.data.on)) {
+      return
+    }
+    var on = vnode.data.on || {};
+    var oldOn = oldVnode.data.on || {};
+    target$1 = vnode.elm;
+    normalizeEvents(on);
+    updateListeners(on, oldOn, add$1, remove$2, createOnceHandler$1, vnode.context);
+    target$1 = undefined;
+  }
+
+  var events = {
+    create: updateDOMListeners,
+    update: updateDOMListeners
+  };
+
+  /*  */
+
+  var svgContainer;
+
+  function updateDOMProps (oldVnode, vnode) {
+    if (isUndef(oldVnode.data.domProps) && isUndef(vnode.data.domProps)) {
+      return
+    }
+    var key, cur;
+    var elm = vnode.elm;
+    var oldProps = oldVnode.data.domProps || {};
+    var props = vnode.data.domProps || {};
+    // clone observed objects, as the user probably wants to mutate it
+    if (isDef(props.__ob__)) {
+      props = vnode.data.domProps = extend({}, props);
+    }
+
+    for (key in oldProps) {
+      if (!(key in props)) {
+        elm[key] = '';
+      }
+    }
+
+    for (key in props) {
+      cur = props[key];
+      // ignore children if the node has textContent or innerHTML,
+      // as these will throw away existing DOM nodes and cause removal errors
+      // on subsequent patches (#3360)
+      if (key === 'textContent' || key === 'innerHTML') {
+        if (vnode.children) { vnode.children.length = 0; }
+        if (cur === oldProps[key]) { continue }
+        // #6601 work around Chrome version <= 55 bug where single textNode
+        // replaced by innerHTML/textContent retains its parentNode property
+        if (elm.childNodes.length === 1) {
+          elm.removeChild(elm.childNodes[0]);
+        }
+      }
+
+      if (key === 'value' && elm.tagName !== 'PROGRESS') {
+        // store value as _value as well since
+        // non-string values will be stringified
+        elm._value = cur;
+        // avoid resetting cursor position when value is the same
+        var strCur = isUndef(cur) ? '' : String(cur);
+        if (shouldUpdateValue(elm, strCur)) {
+          elm.value = strCur;
+        }
+      } else if (key === 'innerHTML' && isSVG(elm.tagName) && isUndef(elm.innerHTML)) {
+        // IE doesn't support innerHTML for SVG elements
+        svgContainer = svgContainer || document.createElement('div');
+        svgContainer.innerHTML = "<svg>" + cur + "</svg>";
+        var svg = svgContainer.firstChild;
+        while (elm.firstChild) {
+          elm.removeChild(elm.firstChild);
+        }
+        while (svg.firstChild) {
+          elm.appendChild(svg.firstChild);
+        }
+      } else if (
+        // skip the update if old and new VDOM state is the same.
+        // `value` is handled separately because the DOM value may be temporarily
+        // out of sync with VDOM state due to focus, composition and modifiers.
+        // This  #4521 by skipping the unnecessary `checked` update.
+        cur !== oldProps[key]
+      ) {
+        // some property updates can throw
+        // e.g. `value` on <progress> w/ non-finite value
+        try {
+          elm[key] = cur;
+        } catch (e) {}
+      }
+    }
+  }
+
+  // check platforms/web/util/attrs.js acceptValue
+
+
+  function shouldUpdateValue (elm, checkVal) {
+    return (!elm.composing && (
+      elm.tagName === 'OPTION' ||
+      isNotInFocusAndDirty(elm, checkVal) ||
+      isDirtyWithModifiers(elm, checkVal)
+    ))
+  }
+
+  function isNotInFocusAndDirty (elm, checkVal) {
+    // return true when textbox (.number and .trim) loses focus and its value is
+    // not equal to the updated value
+    var notInFocus = true;
+    // #6157
+    // work around IE bug when accessing document.activeElement in an iframe
+    try { notInFocus = document.activeElement !== elm; } catch (e) {}
+    return notInFocus && elm.value !== checkVal
+  }
+
+  function isDirtyWithModifiers (elm, newVal) {
+    var value = elm.value;
+    var modifiers = elm._vModifiers; // injected by v-model runtime
+    if (isDef(modifiers)) {
+      if (modifiers.number) {
+        return toNumber(value) !== toNumber(newVal)
+      }
+      if (modifiers.trim) {
+        return value.trim() !== newVal.trim()
+      }
+    }
+    return value !== newVal
+  }
+
+  var domProps = {
+    create: updateDOMProps,
+    update: updateDOMProps
+  };
+
+  /*  */
+
+  var parseStyleText = cached(function (cssText) {
+    var res = {};
+    var listDelimiter = /;(?![^(]*\))/g;
+    var propertyDelimiter = /:(.+)/;
+    cssText.split(listDelimiter).forEach(function (item) {
+      if (item) {
+        var tmp = item.split(propertyDelimiter);
+        tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim());
+      }
+    });
+    return res
+  });
+
+  // merge static and dynamic style data on the same vnode
+  function normalizeStyleData (data) {
+    var style = normalizeStyleBinding(data.style);
+    // static style is pre-processed into an object during compilation
+    // and is always a fresh object, so it's safe to merge into it
+    return data.staticStyle
+      ? extend(data.staticStyle, style)
+      : style
+  }
+
+  // normalize possible array / string values into Object
+  function normalizeStyleBinding (bindingStyle) {
+    if (Array.isArray(bindingStyle)) {
+      return toObject(bindingStyle)
+    }
+    if (typeof bindingStyle === 'string') {
+      return parseStyleText(bindingStyle)
+    }
+    return bindingStyle
+  }
+
+  /**
+   * parent component style should be after child's
+   * so that parent component's style could override it
+   */
+  function getStyle (vnode, checkChild) {
+    var res = {};
+    var styleData;
+
+    if (checkChild) {
+      var childNode = vnode;
+      while (childNode.componentInstance) {
+        childNode = childNode.componentInstance._vnode;
+        if (
+          childNode && childNode.data &&
+          (styleData = normalizeStyleData(childNode.data))
+        ) {
+          extend(res, styleData);
+        }
+      }
+    }
+
+    if ((styleData = normalizeStyleData(vnode.data))) {
+      extend(res, styleData);
+    }
+
+    var parentNode = vnode;
+    while ((parentNode = parentNode.parent)) {
+      if (parentNode.data && (styleData = normalizeStyleData(parentNode.data))) {
+        extend(res, styleData);
+      }
+    }
+    return res
+  }
+
+  /*  */
+
+  var cssVarRE = /^--/;
+  var importantRE = /\s*!important$/;
+  var setProp = function (el, name, val) {
+    /* istanbul ignore if */
+    if (cssVarRE.test(name)) {
+      el.style.setProperty(name, val);
+    } else if (importantRE.test(val)) {
+      el.style.setProperty(hyphenate(name), val.replace(importantRE, ''), 'important');
+    } else {
+      var normalizedName = normalize(name);
+      if (Array.isArray(val)) {
+        // Support values array created by autoprefixer, e.g.
+        // {display: ["-webkit-box", "-ms-flexbox", "flex"]}
+        // Set them one by one, and the browser will only set those it can recognize
+        for (var i = 0, len = val.length; i < len; i++) {
+          el.style[normalizedName] = val[i];
+        }
+      } else {
+        el.style[normalizedName] = val;
+      }
+    }
+  };
+
+  var vendorNames = ['Webkit', 'Moz', 'ms'];
+
+  var emptyStyle;
+  var normalize = cached(function (prop) {
+    emptyStyle = emptyStyle || document.createElement('div').style;
+    prop = camelize(prop);
+    if (prop !== 'filter' && (prop in emptyStyle)) {
+      return prop
+    }
+    var capName = prop.charAt(0).toUpperCase() + prop.slice(1);
+    for (var i = 0; i < vendorNames.length; i++) {
+      var name = vendorNames[i] + capName;
+      if (name in emptyStyle) {
+        return name
+      }
+    }
+  });
+
+  function updateStyle (oldVnode, vnode) {
+    var data = vnode.data;
+    var oldData = oldVnode.data;
+
+    if (isUndef(data.staticStyle) && isUndef(data.style) &&
+      isUndef(oldData.staticStyle) && isUndef(oldData.style)
+    ) {
+      return
+    }
+
+    var cur, name;
+    var el = vnode.elm;
+    var oldStaticStyle = oldData.staticStyle;
+    var oldStyleBinding = oldData.normalizedStyle || oldData.style || {};
+
+    // if static style exists, stylebinding already merged into it when doing normalizeStyleData
+    var oldStyle = oldStaticStyle || oldStyleBinding;
+
+    var style = normalizeStyleBinding(vnode.data.style) || {};
+
+    // store normalized style under a different key for next diff
+    // make sure to clone it if it's reactive, since the user likely wants
+    // to mutate it.
+    vnode.data.normalizedStyle = isDef(style.__ob__)
+      ? extend({}, style)
+      : style;
+
+    var newStyle = getStyle(vnode, true);
+
+    for (name in oldStyle) {
+      if (isUndef(newStyle[name])) {
+        setProp(el, name, '');
+      }
+    }
+    for (name in newStyle) {
+      cur = newStyle[name];
+      if (cur !== oldStyle[name]) {
+        // ie9 setting to null has no effect, must use empty string
+        setProp(el, name, cur == null ? '' : cur);
+      }
+    }
+  }
+
+  var style = {
+    create: updateStyle,
+    update: updateStyle
+  };
+
+  /*  */
+
+  var whitespaceRE = /\s+/;
+
+  /**
+   * Add class with compatibility for SVG since classList is not supported on
+   * SVG elements in IE
+   */
+  function addClass (el, cls) {
+    /* istanbul ignore if */
+    if (!cls || !(cls = cls.trim())) {
+      return
+    }
+
+    /* istanbul ignore else */
+    if (el.classList) {
+      if (cls.indexOf(' ') > -1) {
+        cls.split(whitespaceRE).forEach(function (c) { return el.classList.add(c); });
+      } else {
+        el.classList.add(cls);
+      }
+    } else {
+      var cur = " " + (el.getAttribute('class') || '') + " ";
+      if (cur.indexOf(' ' + cls + ' ') < 0) {
+        el.setAttribute('class', (cur + cls).trim());
+      }
+    }
+  }
+
+  /**
+   * Remove class with compatibility for SVG since classList is not supported on
+   * SVG elements in IE
+   */
+  function removeClass (el, cls) {
+    /* istanbul ignore if */
+    if (!cls || !(cls = cls.trim())) {
+      return
+    }
+
+    /* istanbul ignore else */
+    if (el.classList) {
+      if (cls.indexOf(' ') > -1) {
+        cls.split(whitespaceRE).forEach(function (c) { return el.classList.remove(c); });
+      } else {
+        el.classList.remove(cls);
+      }
+      if (!el.classList.length) {
+        el.removeAttribute('class');
+      }
+    } else {
+      var cur = " " + (el.getAttribute('class') || '') + " ";
+      var tar = ' ' + cls + ' ';
+      while (cur.indexOf(tar) >= 0) {
+        cur = cur.replace(tar, ' ');
+      }
+      cur = cur.trim();
+      if (cur) {
+        el.setAttribute('class', cur);
+      } else {
+        el.removeAttribute('class');
+      }
+    }
+  }
+
+  /*  */
+
+  function resolveTransition (def$$1) {
+    if (!def$$1) {
+      return
+    }
+    /* istanbul ignore else */
+    if (typeof def$$1 === 'object') {
+      var res = {};
+      if (def$$1.css !== false) {
+        extend(res, autoCssTransition(def$$1.name || 'v'));
+      }
+      extend(res, def$$1);
+      return res
+    } else if (typeof def$$1 === 'string') {
+      return autoCssTransition(def$$1)
+    }
+  }
+
+  var autoCssTransition = cached(function (name) {
+    return {
+      enterClass: (name + "-enter"),
+      enterToClass: (name + "-enter-to"),
+      enterActiveClass: (name + "-enter-active"),
+      leaveClass: (name + "-leave"),
+      leaveToClass: (name + "-leave-to"),
+      leaveActiveClass: (name + "-leave-active")
+    }
+  });
+
+  var hasTransition = inBrowser && !isIE9;
+  var TRANSITION = 'transition';
+  var ANIMATION = 'animation';
+
+  // Transition property/event sniffing
+  var transitionProp = 'transition';
+  var transitionEndEvent = 'transitionend';
+  var animationProp = 'animation';
+  var animationEndEvent = 'animationend';
+  if (hasTransition) {
+    /* istanbul ignore if */
+    if (window.ontransitionend === undefined &&
+      window.onwebkittransitionend !== undefined
+    ) {
+      transitionProp = 'WebkitTransition';
+      transitionEndEvent = 'webkitTransitionEnd';
+    }
+    if (window.onanimationend === undefined &&
+      window.onwebkitanimationend !== undefined
+    ) {
+      animationProp = 'WebkitAnimation';
+      animationEndEvent = 'webkitAnimationEnd';
+    }
+  }
+
+  // binding to window is necessary to make hot reload work in IE in strict mode
+  var raf = inBrowser
+    ? window.requestAnimationFrame
+      ? window.requestAnimationFrame.bind(window)
+      : setTimeout
+    : /* istanbul ignore next */ function (fn) { return fn(); };
+
+  function nextFrame (fn) {
+    raf(function () {
+      raf(fn);
+    });
+  }
+
+  function addTransitionClass (el, cls) {
+    var transitionClasses = el._transitionClasses || (el._transitionClasses = []);
+    if (transitionClasses.indexOf(cls) < 0) {
+      transitionClasses.push(cls);
+      addClass(el, cls);
+    }
+  }
+
+  function removeTransitionClass (el, cls) {
+    if (el._transitionClasses) {
+      remove(el._transitionClasses, cls);
+    }
+    removeClass(el, cls);
+  }
+
+  function whenTransitionEnds (
+    el,
+    expectedType,
+    cb
+  ) {
+    var ref = getTransitionInfo(el, expectedType);
+    var type = ref.type;
+    var timeout = ref.timeout;
+    var propCount = ref.propCount;
+    if (!type) { return cb() }
+    var event = type === TRANSITION ? transitionEndEvent : animationEndEvent;
+    var ended = 0;
+    var end = function () {
+      el.removeEventListener(event, onEnd);
+      cb();
+    };
+    var onEnd = function (e) {
+      if (e.target === el) {
+        if (++ended >= propCount) {
+          end();
+        }
+      }
+    };
+    setTimeout(function () {
+      if (ended < propCount) {
+        end();
+      }
+    }, timeout + 1);
+    el.addEventListener(event, onEnd);
+  }
+
+  var transformRE = /\b(transform|all)(,|$)/;
+
+  function getTransitionInfo (el, expectedType) {
+    var styles = window.getComputedStyle(el);
+    // JSDOM may return undefined for transition properties
+    var transitionDelays = (styles[transitionProp + 'Delay'] || '').split(', ');
+    var transitionDurations = (styles[transitionProp + 'Duration'] || '').split(', ');
+    var transitionTimeout = getTimeout(transitionDelays, transitionDurations);
+    var animationDelays = (styles[animationProp + 'Delay'] || '').split(', ');
+    var animationDurations = (styles[animationProp + 'Duration'] || '').split(', ');
+    var animationTimeout = getTimeout(animationDelays, animationDurations);
+
+    var type;
+    var timeout = 0;
+    var propCount = 0;
+    /* istanbul ignore if */
+    if (expectedType === TRANSITION) {
+      if (transitionTimeout > 0) {
+        type = TRANSITION;
+        timeout = transitionTimeout;
+        propCount = transitionDurations.length;
+      }
+    } else if (expectedType === ANIMATION) {
+      if (animationTimeout > 0) {
+        type = ANIMATION;
+        timeout = animationTimeout;
+        propCount = animationDurations.length;
+      }
+    } else {
+      timeout = Math.max(transitionTimeout, animationTimeout);
+      type = timeout > 0
+        ? transitionTimeout > animationTimeout
+          ? TRANSITION
+          : ANIMATION
+        : null;
+      propCount = type
+        ? type === TRANSITION
+          ? transitionDurations.length
+          : animationDurations.length
+        : 0;
+    }
+    var hasTransform =
+      type === TRANSITION &&
+      transformRE.test(styles[transitionProp + 'Property']);
+    return {
+      type: type,
+      timeout: timeout,
+      propCount: propCount,
+      hasTransform: hasTransform
+    }
+  }
+
+  function getTimeout (delays, durations) {
+    /* istanbul ignore next */
+    while (delays.length < durations.length) {
+      delays = delays.concat(delays);
+    }
+
+    return Math.max.apply(null, durations.map(function (d, i) {
+      return toMs(d) + toMs(delays[i])
+    }))
+  }
+
+  // Old versions of Chromium (below 61.0.3163.100) formats floating pointer numbers
+  // in a locale-dependent way, using a comma instead of a dot.
+  // If comma is not replaced with a dot, the input will be rounded down (i.e. acting
+  // as a floor function) causing unexpected behaviors
+  function toMs (s) {
+    return Number(s.slice(0, -1).replace(',', '.')) * 1000
+  }
+
+  /*  */
+
+  function enter (vnode, toggleDisplay) {
+    var el = vnode.elm;
+
+    // call leave callback now
+    if (isDef(el._leaveCb)) {
+      el._leaveCb.cancelled = true;
+      el._leaveCb();
+    }
+
+    var data = resolveTransition(vnode.data.transition);
+    if (isUndef(data)) {
+      return
+    }
+
+    /* istanbul ignore if */
+    if (isDef(el._enterCb) || el.nodeType !== 1) {
+      return
+    }
+
+    var css = data.css;
+    var type = data.type;
+    var enterClass = data.enterClass;
+    var enterToClass = data.enterToClass;
+    var enterActiveClass = data.enterActiveClass;
+    var appearClass = data.appearClass;
+    var appearToClass = data.appearToClass;
+    var appearActiveClass = data.appearActiveClass;
+    var beforeEnter = data.beforeEnter;
+    var enter = data.enter;
+    var afterEnter = data.afterEnter;
+    var enterCancelled = data.enterCancelled;
+    var beforeAppear = data.beforeAppear;
+    var appear = data.appear;
+    var afterAppear = data.afterAppear;
+    var appearCancelled = data.appearCancelled;
+    var duration = data.duration;
+
+    // activeInstance will always be the <transition> component managing this
+    // transition. One edge case to check is when the <transition> is placed
+    // as the root node of a child component. In that case we need to check
+    // <transition>'s parent for appear check.
+    var context = activeInstance;
+    var transitionNode = activeInstance.$vnode;
+    while (transitionNode && transitionNode.parent) {
+      context = transitionNode.context;
+      transitionNode = transitionNode.parent;
+    }
+
+    var isAppear = !context._isMounted || !vnode.isRootInsert;
+
+    if (isAppear && !appear && appear !== '') {
+      return
+    }
+
+    var startClass = isAppear && appearClass
+      ? appearClass
+      : enterClass;
+    var activeClass = isAppear && appearActiveClass
+      ? appearActiveClass
+      : enterActiveClass;
+    var toClass = isAppear && appearToClass
+      ? appearToClass
+      : enterToClass;
+
+    var beforeEnterHook = isAppear
+      ? (beforeAppear || beforeEnter)
+      : beforeEnter;
+    var enterHook = isAppear
+      ? (typeof appear === 'function' ? appear : enter)
+      : enter;
+    var afterEnterHook = isAppear
+      ? (afterAppear || afterEnter)
+      : afterEnter;
+    var enterCancelledHook = isAppear
+      ? (appearCancelled || enterCancelled)
+      : enterCancelled;
+
+    var explicitEnterDuration = toNumber(
+      isObject(duration)
+        ? duration.enter
+        : duration
+    );
+
+    if (explicitEnterDuration != null) {
+      checkDuration(explicitEnterDuration, 'enter', vnode);
+    }
+
+    var expectsCSS = css !== false && !isIE9;
+    var userWantsControl = getHookArgumentsLength(enterHook);
+
+    var cb = el._enterCb = once(function () {
+      if (expectsCSS) {
+        removeTransitionClass(el, toClass);
+        removeTransitionClass(el, activeClass);
+      }
+      if (cb.cancelled) {
+        if (expectsCSS) {
+          removeTransitionClass(el, startClass);
+        }
+        enterCancelledHook && enterCancelledHook(el);
+      } else {
+        afterEnterHook && afterEnterHook(el);
+      }
+      el._enterCb = null;
+    });
+
+    if (!vnode.data.show) {
+      // remove pending leave element on enter by injecting an insert hook
+      mergeVNodeHook(vnode, 'insert', function () {
+        var parent = el.parentNode;
+        var pendingNode = parent && parent._pending && parent._pending[vnode.key];
+        if (pendingNode &&
+          pendingNode.tag === vnode.tag &&
+          pendingNode.elm._leaveCb
+        ) {
+          pendingNode.elm._leaveCb();
+        }
+        enterHook && enterHook(el, cb);
+      });
+    }
+
+    // start enter transition
+    beforeEnterHook && beforeEnterHook(el);
+    if (expectsCSS) {
+      addTransitionClass(el, startClass);
+      addTransitionClass(el, activeClass);
+      nextFrame(function () {
+        removeTransitionClass(el, startClass);
+        if (!cb.cancelled) {
+          addTransitionClass(el, toClass);
+          if (!userWantsControl) {
+            if (isValidDuration(explicitEnterDuration)) {
+              setTimeout(cb, explicitEnterDuration);
+            } else {
+              whenTransitionEnds(el, type, cb);
+            }
+          }
+        }
+      });
+    }
+
+    if (vnode.data.show) {
+      toggleDisplay && toggleDisplay();
+      enterHook && enterHook(el, cb);
+    }
+
+    if (!expectsCSS && !userWantsControl) {
+      cb();
+    }
+  }
+
+  function leave (vnode, rm) {
+    var el = vnode.elm;
+
+    // call enter callback now
+    if (isDef(el._enterCb)) {
+      el._enterCb.cancelled = true;
+      el._enterCb();
+    }
+
+    var data = resolveTransition(vnode.data.transition);
+    if (isUndef(data) || el.nodeType !== 1) {
+      return rm()
+    }
+
+    /* istanbul ignore if */
+    if (isDef(el._leaveCb)) {
+      return
+    }
+
+    var css = data.css;
+    var type = data.type;
+    var leaveClass = data.leaveClass;
+    var leaveToClass = data.leaveToClass;
+    var leaveActiveClass = data.leaveActiveClass;
+    var beforeLeave = data.beforeLeave;
+    var leave = data.leave;
+    var afterLeave = data.afterLeave;
+    var leaveCancelled = data.leaveCancelled;
+    var delayLeave = data.delayLeave;
+    var duration = data.duration;
+
+    var expectsCSS = css !== false && !isIE9;
+    var userWantsControl = getHookArgumentsLength(leave);
+
+    var explicitLeaveDuration = toNumber(
+      isObject(duration)
+        ? duration.leave
+        : duration
+    );
+
+    if (isDef(explicitLeaveDuration)) {
+      checkDuration(explicitLeaveDuration, 'leave', vnode);
+    }
+
+    var cb = el._leaveCb = once(function () {
+      if (el.parentNode && el.parentNode._pending) {
+        el.parentNode._pending[vnode.key] = null;
+      }
+      if (expectsCSS) {
+        removeTransitionClass(el, leaveToClass);
+        removeTransitionClass(el, leaveActiveClass);
+      }
+      if (cb.cancelled) {
+        if (expectsCSS) {
+          removeTransitionClass(el, leaveClass);
+        }
+        leaveCancelled && leaveCancelled(el);
+      } else {
+        rm();
+        afterLeave && afterLeave(el);
+      }
+      el._leaveCb = null;
+    });
+
+    if (delayLeave) {
+      delayLeave(performLeave);
+    } else {
+      performLeave();
+    }
+
+    function performLeave () {
+      // the delayed leave may have already been cancelled
+      if (cb.cancelled) {
+        return
+      }
+      // record leaving element
+      if (!vnode.data.show && el.parentNode) {
+        (el.parentNode._pending || (el.parentNode._pending = {}))[(vnode.key)] = vnode;
+      }
+      beforeLeave && beforeLeave(el);
+      if (expectsCSS) {
+        addTransitionClass(el, leaveClass);
+        addTransitionClass(el, leaveActiveClass);
+        nextFrame(function () {
+          removeTransitionClass(el, leaveClass);
+          if (!cb.cancelled) {
+            addTransitionClass(el, leaveToClass);
+            if (!userWantsControl) {
+              if (isValidDuration(explicitLeaveDuration)) {
+                setTimeout(cb, explicitLeaveDuration);
+              } else {
+                whenTransitionEnds(el, type, cb);
+              }
+            }
+          }
+        });
+      }
+      leave && leave(el, cb);
+      if (!expectsCSS && !userWantsControl) {
+        cb();
+      }
+    }
+  }
+
+  // only used in dev mode
+  function checkDuration (val, name, vnode) {
+    if (typeof val !== 'number') {
+      warn(
+        "<transition> explicit " + name + " duration is not a valid number - " +
+        "got " + (JSON.stringify(val)) + ".",
+        vnode.context
+      );
+    } else if (isNaN(val)) {
+      warn(
+        "<transition> explicit " + name + " duration is NaN - " +
+        'the duration expression might be incorrect.',
+        vnode.context
+      );
+    }
+  }
+
+  function isValidDuration (val) {
+    return typeof val === 'number' && !isNaN(val)
+  }
+
+  /**
+   * Normalize a transition hook's argument length. The hook may be:
+   * - a merged hook (invoker) with the original in .fns
+   * - a wrapped component method (check ._length)
+   * - a plain function (.length)
+   */
+  function getHookArgumentsLength (fn) {
+    if (isUndef(fn)) {
+      return false
+    }
+    var invokerFns = fn.fns;
+    if (isDef(invokerFns)) {
+      // invoker
+      return getHookArgumentsLength(
+        Array.isArray(invokerFns)
+          ? invokerFns[0]
+          : invokerFns
+      )
+    } else {
+      return (fn._length || fn.length) > 1
+    }
+  }
+
+  function _enter (_, vnode) {
+    if (vnode.data.show !== true) {
+      enter(vnode);
+    }
+  }
+
+  var transition = inBrowser ? {
+    create: _enter,
+    activate: _enter,
+    remove: function remove$$1 (vnode, rm) {
+      /* istanbul ignore else */
+      if (vnode.data.show !== true) {
+        leave(vnode, rm);
+      } else {
+        rm();
+      }
+    }
+  } : {};
+
+  var platformModules = [
+    attrs,
+    klass,
+    events,
+    domProps,
+    style,
+    transition
+  ];
+
+  /*  */
+
+  // the directive module should be applied last, after all
+  // built-in modules have been applied.
+  var modules = platformModules.concat(baseModules);
+
+  var patch = createPatchFunction({ nodeOps: nodeOps, modules: modules });
+
+  /**
+   * Not type checking this file because flow doesn't like attaching
+   * properties to Elements.
+   */
+
+  /* istanbul ignore if */
+  if (isIE9) {
+    // http://www.matts411.com/post/internet-explorer-9-oninput/
+    document.addEventListener('selectionchange', function () {
+      var el = document.activeElement;
+      if (el && el.vmodel) {
+        trigger(el, 'input');
+      }
+    });
+  }
+
+  var directive = {
+    inserted: function inserted (el, binding, vnode, oldVnode) {
+      if (vnode.tag === 'select') {
+        // #6903
+        if (oldVnode.elm && !oldVnode.elm._vOptions) {
+          mergeVNodeHook(vnode, 'postpatch', function () {
+            directive.componentUpdated(el, binding, vnode);
+          });
+        } else {
+          setSelected(el, binding, vnode.context);
+        }
+        el._vOptions = [].map.call(el.options, getValue);
+      } else if (vnode.tag === 'textarea' || isTextInputType(el.type)) {
+        el._vModifiers = binding.modifiers;
+        if (!binding.modifiers.lazy) {
+          el.addEventListener('compositionstart', onCompositionStart);
+          el.addEventListener('compositionend', onCompositionEnd);
+          // Safari < 10.2 & UIWebView doesn't fire compositionend when
+          // switching focus before confirming composition choice
+          // this also fixes the issue where some browsers e.g. iOS Chrome
+          // fires "change" instead of "input" on autocomplete.
+          el.addEventListener('change', onCompositionEnd);
+          /* istanbul ignore if */
+          if (isIE9) {
+            el.vmodel = true;
+          }
+        }
+      }
+    },
+
+    componentUpdated: function componentUpdated (el, binding, vnode) {
+      if (vnode.tag === 'select') {
+        setSelected(el, binding, vnode.context);
+        // in case the options rendered by v-for have changed,
+        // it's possible that the value is out-of-sync with the rendered options.
+        // detect such cases and filter out values that no longer has a matching
+        // option in the DOM.
+        var prevOptions = el._vOptions;
+        var curOptions = el._vOptions = [].map.call(el.options, getValue);
+        if (curOptions.some(function (o, i) { return !looseEqual(o, prevOptions[i]); })) {
+          // trigger change event if
+          // no matching option found for at least one value
+          var needReset = el.multiple
+            ? binding.value.some(function (v) { return hasNoMatchingOption(v, curOptions); })
+            : binding.value !== binding.oldValue && hasNoMatchingOption(binding.value, curOptions);
+          if (needReset) {
+            trigger(el, 'change');
+          }
+        }
+      }
+    }
+  };
+
+  function setSelected (el, binding, vm) {
+    actuallySetSelected(el, binding, vm);
+    /* istanbul ignore if */
+    if (isIE || isEdge) {
+      setTimeout(function () {
+        actuallySetSelected(el, binding, vm);
+      }, 0);
+    }
+  }
+
+  function actuallySetSelected (el, binding, vm) {
+    var value = binding.value;
+    var isMultiple = el.multiple;
+    if (isMultiple && !Array.isArray(value)) {
+      warn(
+        "<select multiple v-model=\"" + (binding.expression) + "\"> " +
+        "expects an Array value for its binding, but got " + (Object.prototype.toString.call(value).slice(8, -1)),
+        vm
+      );
+      return
+    }
+    var selected, option;
+    for (var i = 0, l = el.options.length; i < l; i++) {
+      option = el.options[i];
+      if (isMultiple) {
+        selected = looseIndexOf(value, getValue(option)) > -1;
+        if (option.selected !== selected) {
+          option.selected = selected;
+        }
+      } else {
+        if (looseEqual(getValue(option), value)) {
+          if (el.selectedIndex !== i) {
+            el.selectedIndex = i;
+          }
+          return
+        }
+      }
+    }
+    if (!isMultiple) {
+      el.selectedIndex = -1;
+    }
+  }
+
+  function hasNoMatchingOption (value, options) {
+    return options.every(function (o) { return !looseEqual(o, value); })
+  }
+
+  function getValue (option) {
+    return '_value' in option
+      ? option._value
+      : option.value
+  }
+
+  function onCompositionStart (e) {
+    e.target.composing = true;
+  }
+
+  function onCompositionEnd (e) {
+    // prevent triggering an input event for no reason
+    if (!e.target.composing) { return }
+    e.target.composing = false;
+    trigger(e.target, 'input');
+  }
+
+  function trigger (el, type) {
+    var e = document.createEvent('HTMLEvents');
+    e.initEvent(type, true, true);
+    el.dispatchEvent(e);
+  }
+
+  /*  */
+
+  // recursively search for possible transition defined inside the component root
+  function locateNode (vnode) {
+    return vnode.componentInstance && (!vnode.data || !vnode.data.transition)
+      ? locateNode(vnode.componentInstance._vnode)
+      : vnode
+  }
+
+  var show = {
+    bind: function bind (el, ref, vnode) {
+      var value = ref.value;
+
+      vnode = locateNode(vnode);
+      var transition$$1 = vnode.data && vnode.data.transition;
+      var originalDisplay = el.__vOriginalDisplay =
+        el.style.display === 'none' ? '' : el.style.display;
+      if (value && transition$$1) {
+        vnode.data.show = true;
+        enter(vnode, function () {
+          el.style.display = originalDisplay;
+        });
+      } else {
+        el.style.display = value ? originalDisplay : 'none';
+      }
+    },
+
+    update: function update (el, ref, vnode) {
+      var value = ref.value;
+      var oldValue = ref.oldValue;
+
+      /* istanbul ignore if */
+      if (!value === !oldValue) { return }
+      vnode = locateNode(vnode);
+      var transition$$1 = vnode.data && vnode.data.transition;
+      if (transition$$1) {
+        vnode.data.show = true;
+        if (value) {
+          enter(vnode, function () {
+            el.style.display = el.__vOriginalDisplay;
+          });
+        } else {
+          leave(vnode, function () {
+            el.style.display = 'none';
+          });
+        }
+      } else {
+        el.style.display = value ? el.__vOriginalDisplay : 'none';
+      }
+    },
+
+    unbind: function unbind (
+      el,
+      binding,
+      vnode,
+      oldVnode,
+      isDestroy
+    ) {
+      if (!isDestroy) {
+        el.style.display = el.__vOriginalDisplay;
+      }
+    }
+  };
+
+  var platformDirectives = {
+    model: directive,
+    show: show
+  };
+
+  /*  */
+
+  var transitionProps = {
+    name: String,
+    appear: Boolean,
+    css: Boolean,
+    mode: String,
+    type: String,
+    enterClass: String,
+    leaveClass: String,
+    enterToClass: String,
+    leaveToClass: String,
+    enterActiveClass: String,
+    leaveActiveClass: String,
+    appearClass: String,
+    appearActiveClass: String,
+    appearToClass: String,
+    duration: [Number, String, Object]
+  };
+
+  // in case the child is also an abstract component, e.g. <keep-alive>
+  // we want to recursively retrieve the real component to be rendered
+  function getRealChild (vnode) {
+    var compOptions = vnode && vnode.componentOptions;
+    if (compOptions && compOptions.Ctor.options.abstract) {
+      return getRealChild(getFirstComponentChild(compOptions.children))
+    } else {
+      return vnode
+    }
+  }
+
+  function extractTransitionData (comp) {
+    var data = {};
+    var options = comp.$options;
+    // props
+    for (var key in options.propsData) {
+      data[key] = comp[key];
+    }
+    // events.
+    // extract listeners and pass them directly to the transition methods
+    var listeners = options._parentListeners;
+    for (var key$1 in listeners) {
+      data[camelize(key$1)] = listeners[key$1];
+    }
+    return data
+  }
+
+  function placeholder (h, rawChild) {
+    if (/\d-keep-alive$/.test(rawChild.tag)) {
+      return h('keep-alive', {
+        props: rawChild.componentOptions.propsData
+      })
+    }
+  }
+
+  function hasParentTransition (vnode) {
+    while ((vnode = vnode.parent)) {
+      if (vnode.data.transition) {
+        return true
+      }
+    }
+  }
+
+  function isSameChild (child, oldChild) {
+    return oldChild.key === child.key && oldChild.tag === child.tag
+  }
+
+  var isNotTextNode = function (c) { return c.tag || isAsyncPlaceholder(c); };
+
+  var isVShowDirective = function (d) { return d.name === 'show'; };
+
+  var Transition = {
+    name: 'transition',
+    props: transitionProps,
+    abstract: true,
+
+    render: function render (h) {
+      var this$1 = this;
+
+      var children = this.$slots.default;
+      if (!children) {
+        return
+      }
+
+      // filter out text nodes (possible whitespaces)
+      children = children.filter(isNotTextNode);
+      /* istanbul ignore if */
+      if (!children.length) {
+        return
+      }
+
+      // warn multiple elements
+      if (children.length > 1) {
+        warn(
+          '<transition> can only be used on a single element. Use ' +
+          '<transition-group> for lists.',
+          this.$parent
+        );
+      }
+
+      var mode = this.mode;
+
+      // warn invalid mode
+      if (mode && mode !== 'in-out' && mode !== 'out-in'
+      ) {
+        warn(
+          'invalid <transition> mode: ' + mode,
+          this.$parent
+        );
+      }
+
+      var rawChild = children[0];
+
+      // if this is a component root node and the component's
+      // parent container node also has transition, skip.
+      if (hasParentTransition(this.$vnode)) {
+        return rawChild
+      }
+
+      // apply transition data to child
+      // use getRealChild() to ignore abstract components e.g. keep-alive
+      var child = getRealChild(rawChild);
+      /* istanbul ignore if */
+      if (!child) {
+        return rawChild
+      }
+
+      if (this._leaving) {
+        return placeholder(h, rawChild)
+      }
+
+      // ensure a key that is unique to the vnode type and to this transition
+      // component instance. This key will be used to remove pending leaving nodes
+      // during entering.
+      var id = "__transition-" + (this._uid) + "-";
+      child.key = child.key == null
+        ? child.isComment
+          ? id + 'comment'
+          : id + child.tag
+        : isPrimitive(child.key)
+          ? (String(child.key).indexOf(id) === 0 ? child.key : id + child.key)
+          : child.key;
+
+      var data = (child.data || (child.data = {})).transition = extractTransitionData(this);
+      var oldRawChild = this._vnode;
+      var oldChild = getRealChild(oldRawChild);
+
+      // mark v-show
+      // so that the transition module can hand over the control to the directive
+      if (child.data.directives && child.data.directives.some(isVShowDirective)) {
+        child.data.show = true;
+      }
+
+      if (
+        oldChild &&
+        oldChild.data &&
+        !isSameChild(child, oldChild) &&
+        !isAsyncPlaceholder(oldChild) &&
+        // #6687 component root is a comment node
+        !(oldChild.componentInstance && oldChild.componentInstance._vnode.isComment)
+      ) {
+        // replace old child transition data with fresh one
+        // important for dynamic transitions!
+        var oldData = oldChild.data.transition = extend({}, data);
+        // handle transition mode
+        if (mode === 'out-in') {
+          // return placeholder node and queue update when leave finishes
+          this._leaving = true;
+          mergeVNodeHook(oldData, 'afterLeave', function () {
+            this$1._leaving = false;
+            this$1.$forceUpdate();
+          });
+          return placeholder(h, rawChild)
+        } else if (mode === 'in-out') {
+          if (isAsyncPlaceholder(child)) {
+            return oldRawChild
+          }
+          var delayedLeave;
+          var performLeave = function () { delayedLeave(); };
+          mergeVNodeHook(data, 'afterEnter', performLeave);
+          mergeVNodeHook(data, 'enterCancelled', performLeave);
+          mergeVNodeHook(oldData, 'delayLeave', function (leave) { delayedLeave = leave; });
+        }
+      }
+
+      return rawChild
+    }
+  };
+
+  /*  */
+
+  var props = extend({
+    tag: String,
+    moveClass: String
+  }, transitionProps);
+
+  delete props.mode;
+
+  var TransitionGroup = {
+    props: props,
+
+    beforeMount: function beforeMount () {
+      var this$1 = this;
+
+      var update = this._update;
+      this._update = function (vnode, hydrating) {
+        var restoreActiveInstance = setActiveInstance(this$1);
+        // force removing pass
+        this$1.__patch__(
+          this$1._vnode,
+          this$1.kept,
+          false, // hydrating
+          true // removeOnly (!important, avoids unnecessary moves)
+        );
+        this$1._vnode = this$1.kept;
+        restoreActiveInstance();
+        update.call(this$1, vnode, hydrating);
+      };
+    },
+
+    render: function render (h) {
+      var tag = this.tag || this.$vnode.data.tag || 'span';
+      var map = Object.create(null);
+      var prevChildren = this.prevChildren = this.children;
+      var rawChildren = this.$slots.default || [];
+      var children = this.children = [];
+      var transitionData = extractTransitionData(this);
+
+      for (var i = 0; i < rawChildren.length; i++) {
+        var c = rawChildren[i];
+        if (c.tag) {
+          if (c.key != null && String(c.key).indexOf('__vlist') !== 0) {
+            children.push(c);
+            map[c.key] = c
+            ;(c.data || (c.data = {})).transition = transitionData;
+          } else {
+            var opts = c.componentOptions;
+            var name = opts ? (opts.Ctor.options.name || opts.tag || '') : c.tag;
+            warn(("<transition-group> children must be keyed: <" + name + ">"));
+          }
+        }
+      }
+
+      if (prevChildren) {
+        var kept = [];
+        var removed = [];
+        for (var i$1 = 0; i$1 < prevChildren.length; i$1++) {
+          var c$1 = prevChildren[i$1];
+          c$1.data.transition = transitionData;
+          c$1.data.pos = c$1.elm.getBoundingClientRect();
+          if (map[c$1.key]) {
+            kept.push(c$1);
+          } else {
+            removed.push(c$1);
+          }
+        }
+        this.kept = h(tag, null, kept);
+        this.removed = removed;
+      }
+
+      return h(tag, null, children)
+    },
+
+    updated: function updated () {
+      var children = this.prevChildren;
+      var moveClass = this.moveClass || ((this.name || 'v') + '-move');
+      if (!children.length || !this.hasMove(children[0].elm, moveClass)) {
+        return
+      }
+
+      // we divide the work into three loops to avoid mixing DOM reads and writes
+      // in each iteration - which helps prevent layout thrashing.
+      children.forEach(callPendingCbs);
+      children.forEach(recordPosition);
+      children.forEach(applyTranslation);
+
+      // force reflow to put everything in position
+      // assign to this to avoid being removed in tree-shaking
+      // $flow-disable-line
+      this._reflow = document.body.offsetHeight;
+
+      children.forEach(function (c) {
+        if (c.data.moved) {
+          var el = c.elm;
+          var s = el.style;
+          addTransitionClass(el, moveClass);
+          s.transform = s.WebkitTransform = s.transitionDuration = '';
+          el.addEventListener(transitionEndEvent, el._moveCb = function cb (e) {
+            if (e && e.target !== el) {
+              return
+            }
+            if (!e || /transform$/.test(e.propertyName)) {
+              el.removeEventListener(transitionEndEvent, cb);
+              el._moveCb = null;
+              removeTransitionClass(el, moveClass);
+            }
+          });
+        }
+      });
+    },
+
+    methods: {
+      hasMove: function hasMove (el, moveClass) {
+        /* istanbul ignore if */
+        if (!hasTransition) {
+          return false
+        }
+        /* istanbul ignore if */
+        if (this._hasMove) {
+          return this._hasMove
+        }
+        // Detect whether an element with the move class applied has
+        // CSS transitions. Since the element may be inside an entering
+        // transition at this very moment, we make a clone of it and remove
+        // all other transition classes applied to ensure only the move class
+        // is applied.
+        var clone = el.cloneNode();
+        if (el._transitionClasses) {
+          el._transitionClasses.forEach(function (cls) { removeClass(clone, cls); });
+        }
+        addClass(clone, moveClass);
+        clone.style.display = 'none';
+        this.$el.appendChild(clone);
+        var info = getTransitionInfo(clone);
+        this.$el.removeChild(clone);
+        return (this._hasMove = info.hasTransform)
+      }
+    }
+  };
+
+  function callPendingCbs (c) {
+    /* istanbul ignore if */
+    if (c.elm._moveCb) {
+      c.elm._moveCb();
+    }
+    /* istanbul ignore if */
+    if (c.elm._enterCb) {
+      c.elm._enterCb();
+    }
+  }
+
+  function recordPosition (c) {
+    c.data.newPos = c.elm.getBoundingClientRect();
+  }
+
+  function applyTranslation (c) {
+    var oldPos = c.data.pos;
+    var newPos = c.data.newPos;
+    var dx = oldPos.left - newPos.left;
+    var dy = oldPos.top - newPos.top;
+    if (dx || dy) {
+      c.data.moved = true;
+      var s = c.elm.style;
+      s.transform = s.WebkitTransform = "translate(" + dx + "px," + dy + "px)";
+      s.transitionDuration = '0s';
+    }
+  }
+
+  var platformComponents = {
+    Transition: Transition,
+    TransitionGroup: TransitionGroup
+  };
+
+  /*  */
+
+  // install platform specific utils
+  Vue.config.mustUseProp = mustUseProp;
+  Vue.config.isReservedTag = isReservedTag;
+  Vue.config.isReservedAttr = isReservedAttr;
+  Vue.config.getTagNamespace = getTagNamespace;
+  Vue.config.isUnknownElement = isUnknownElement;
+
+  // install platform runtime directives & components
+  extend(Vue.options.directives, platformDirectives);
+  extend(Vue.options.components, platformComponents);
+
+  // install platform patch function
+  Vue.prototype.__patch__ = inBrowser ? patch : noop;
+
+  // public mount method
+  Vue.prototype.$mount = function (
+    el,
+    hydrating
+  ) {
+    el = el && inBrowser ? query(el) : undefined;
+    return mountComponent(this, el, hydrating)
+  };
+
+  // devtools global hook
+  /* istanbul ignore next */
+  if (inBrowser) {
+    setTimeout(function () {
+      if (config.devtools) {
+        if (devtools) {
+          devtools.emit('init', Vue);
+        } else {
+          console[console.info ? 'info' : 'log'](
+            'Download the Vue Devtools extension for a better development experience:\n' +
+            'https://github.com/vuejs/vue-devtools'
+          );
+        }
+      }
+      if (config.productionTip !== false &&
+        typeof console !== 'undefined'
+      ) {
+        console[console.info ? 'info' : 'log'](
+          "You are running Vue in development mode.\n" +
+          "Make sure to turn on production mode when deploying for production.\n" +
+          "See more tips at https://vuejs.org/guide/deployment.html"
+        );
+      }
+    }, 0);
+  }
+
+  /*  */
+
+  var defaultTagRE = /\{\{((?:.|\r?\n)+?)\}\}/g;
+  var regexEscapeRE = /[-.*+?^${}()|[\]\/\\]/g;
+
+  var buildRegex = cached(function (delimiters) {
+    var open = delimiters[0].replace(regexEscapeRE, '\\$&');
+    var close = delimiters[1].replace(regexEscapeRE, '\\$&');
+    return new RegExp(open + '((?:.|\\n)+?)' + close, 'g')
+  });
+
+
+
+  function parseText (
+    text,
+    delimiters
+  ) {
+    var tagRE = delimiters ? buildRegex(delimiters) : defaultTagRE;
+    if (!tagRE.test(text)) {
+      return
+    }
+    var tokens = [];
+    var rawTokens = [];
+    var lastIndex = tagRE.lastIndex = 0;
+    var match, index, tokenValue;
+    while ((match = tagRE.exec(text))) {
+      index = match.index;
+      // push text token
+      if (index > lastIndex) {
+        rawTokens.push(tokenValue = text.slice(lastIndex, index));
+        tokens.push(JSON.stringify(tokenValue));
+      }
+      // tag token
+      var exp = parseFilters(match[1].trim());
+      tokens.push(("_s(" + exp + ")"));
+      rawTokens.push({ '@binding': exp });
+      lastIndex = index + match[0].length;
+    }
+    if (lastIndex < text.length) {
+      rawTokens.push(tokenValue = text.slice(lastIndex));
+      tokens.push(JSON.stringify(tokenValue));
+    }
+    return {
+      expression: tokens.join('+'),
+      tokens: rawTokens
+    }
+  }
+
+  /*  */
+
+  function transformNode (el, options) {
+    var warn = options.warn || baseWarn;
+    var staticClass = getAndRemoveAttr(el, 'class');
+    if (staticClass) {
+      var res = parseText(staticClass, options.delimiters);
+      if (res) {
+        warn(
+          "class=\"" + staticClass + "\": " +
+          'Interpolation inside attributes has been removed. ' +
+          'Use v-bind or the colon shorthand instead. For example, ' +
+          'instead of <div class="{{ val }}">, use <div :class="val">.',
+          el.rawAttrsMap['class']
+        );
+      }
+    }
+    if (staticClass) {
+      el.staticClass = JSON.stringify(staticClass);
+    }
+    var classBinding = getBindingAttr(el, 'class', false /* getStatic */);
+    if (classBinding) {
+      el.classBinding = classBinding;
+    }
+  }
+
+  function genData (el) {
+    var data = '';
+    if (el.staticClass) {
+      data += "staticClass:" + (el.staticClass) + ",";
+    }
+    if (el.classBinding) {
+      data += "class:" + (el.classBinding) + ",";
+    }
+    return data
+  }
+
+  var klass$1 = {
+    staticKeys: ['staticClass'],
+    transformNode: transformNode,
+    genData: genData
+  };
+
+  /*  */
+
+  function transformNode$1 (el, options) {
+    var warn = options.warn || baseWarn;
+    var staticStyle = getAndRemoveAttr(el, 'style');
+    if (staticStyle) {
+      /* istanbul ignore if */
+      {
+        var res = parseText(staticStyle, options.delimiters);
+        if (res) {
+          warn(
+            "style=\"" + staticStyle + "\": " +
+            'Interpolation inside attributes has been removed. ' +
+            'Use v-bind or the colon shorthand instead. For example, ' +
+            'instead of <div style="{{ val }}">, use <div :style="val">.',
+            el.rawAttrsMap['style']
+          );
+        }
+      }
+      el.staticStyle = JSON.stringify(parseStyleText(staticStyle));
+    }
+
+    var styleBinding = getBindingAttr(el, 'style', false /* getStatic */);
+    if (styleBinding) {
+      el.styleBinding = styleBinding;
+    }
+  }
+
+  function genData$1 (el) {
+    var data = '';
+    if (el.staticStyle) {
+      data += "staticStyle:" + (el.staticStyle) + ",";
+    }
+    if (el.styleBinding) {
+      data += "style:(" + (el.styleBinding) + "),";
+    }
+    return data
+  }
+
+  var style$1 = {
+    staticKeys: ['staticStyle'],
+    transformNode: transformNode$1,
+    genData: genData$1
+  };
+
+  /*  */
+
+  var decoder;
+
+  var he = {
+    decode: function decode (html) {
+      decoder = decoder || document.createElement('div');
+      decoder.innerHTML = html;
+      return decoder.textContent
+    }
+  };
+
+  /*  */
+
+  var isUnaryTag = makeMap(
+    'area,base,br,col,embed,frame,hr,img,input,isindex,keygen,' +
+    'link,meta,param,source,track,wbr'
+  );
+
+  // Elements that you can, intentionally, leave open
+  // (and which close themselves)
+  var canBeLeftOpenTag = makeMap(
+    'colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr,source'
+  );
+
+  // HTML5 tags https://html.spec.whatwg.org/multipage/indices.html#elements-3
+  // Phrasing Content https://html.spec.whatwg.org/multipage/dom.html#phrasing-content
+  var isNonPhrasingTag = makeMap(
+    'address,article,aside,base,blockquote,body,caption,col,colgroup,dd,' +
+    'details,dialog,div,dl,dt,fieldset,figcaption,figure,footer,form,' +
+    'h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,legend,li,menuitem,meta,' +
+    'optgroup,option,param,rp,rt,source,style,summary,tbody,td,tfoot,th,thead,' +
+    'title,tr,track'
+  );
+
+  /**
+   * Not type-checking this file because it's mostly vendor code.
+   */
+
+  // Regular Expressions for parsing tags and attributes
+  var attribute = /^\s*([^\s"'<>\/=]+)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/;
+  var dynamicArgAttribute = /^\s*((?:v-[\w-]+:|@|:|#)\[[^=]+\][^\s"'<>\/=]*)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/;
+  var ncname = "[a-zA-Z_][\\-\\.0-9_a-zA-Z" + (unicodeRegExp.source) + "]*";
+  var qnameCapture = "((?:" + ncname + "\\:)?" + ncname + ")";
+  var startTagOpen = new RegExp(("^<" + qnameCapture));
+  var startTagClose = /^\s*(\/?)>/;
+  var endTag = new RegExp(("^<\\/" + qnameCapture + "[^>]*>"));
+  var doctype = /^<!DOCTYPE [^>]+>/i;
+  // #7298: escape - to avoid being passed as HTML comment when inlined in page
+  var comment = /^<!\--/;
+  var conditionalComment = /^<!\[/;
+
+  // Special Elements (can contain anything)
+  var isPlainTextElement = makeMap('script,style,textarea', true);
+  var reCache = {};
+
+  var decodingMap = {
+    '&lt;': '<',
+    '&gt;': '>',
+    '&quot;': '"',
+    '&amp;': '&',
+    '&#10;': '\n',
+    '&#9;': '\t',
+    '&#39;': "'"
+  };
+  var encodedAttr = /&(?:lt|gt|quot|amp|#39);/g;
+  var encodedAttrWithNewLines = /&(?:lt|gt|quot|amp|#39|#10|#9);/g;
+
+  // #5992
+  var isIgnoreNewlineTag = makeMap('pre,textarea', true);
+  var shouldIgnoreFirstNewline = function (tag, html) { return tag && isIgnoreNewlineTag(tag) && html[0] === '\n'; };
+
+  function decodeAttr (value, shouldDecodeNewlines) {
+    var re = shouldDecodeNewlines ? encodedAttrWithNewLines : encodedAttr;
+    return value.replace(re, function (match) { return decodingMap[match]; })
+  }
+
+  function parseHTML (html, options) {
+    var stack = [];
+    var expectHTML = options.expectHTML;
+    var isUnaryTag$$1 = options.isUnaryTag || no;
+    var canBeLeftOpenTag$$1 = options.canBeLeftOpenTag || no;
+    var index = 0;
+    var last, lastTag;
+    while (html) {
+      last = html;
+      // Make sure we're not in a plaintext content element like script/style
+      if (!lastTag || !isPlainTextElement(lastTag)) {
+        var textEnd = html.indexOf('<');
+        if (textEnd === 0) {
+          // Comment:
+          if (comment.test(html)) {
+            var commentEnd = html.indexOf('-->');
+
+            if (commentEnd >= 0) {
+              if (options.shouldKeepComment) {
+                options.comment(html.substring(4, commentEnd), index, index + commentEnd + 3);
+              }
+              advance(commentEnd + 3);
+              continue
+            }
+          }
+
+          // http://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment
+          if (conditionalComment.test(html)) {
+            var conditionalEnd = html.indexOf(']>');
+
+            if (conditionalEnd >= 0) {
+              advance(conditionalEnd + 2);
+              continue
+            }
+          }
+
+          // Doctype:
+          var doctypeMatch = html.match(doctype);
+          if (doctypeMatch) {
+            advance(doctypeMatch[0].length);
+            continue
+          }
+
+          // End tag:
+          var endTagMatch = html.match(endTag);
+          if (endTagMatch) {
+            var curIndex = index;
+            advance(endTagMatch[0].length);
+            parseEndTag(endTagMatch[1], curIndex, index);
+            continue
+          }
+
+          // Start tag:
+          var startTagMatch = parseStartTag();
+          if (startTagMatch) {
+            handleStartTag(startTagMatch);
+            if (shouldIgnoreFirstNewline(startTagMatch.tagName, html)) {
+              advance(1);
+            }
+            continue
+          }
+        }
+
+        var text = (void 0), rest = (void 0), next = (void 0);
+        if (textEnd >= 0) {
+          rest = html.slice(textEnd);
+          while (
+            !endTag.test(rest) &&
+            !startTagOpen.test(rest) &&
+            !comment.test(rest) &&
+            !conditionalComment.test(rest)
+          ) {
+            // < in plain text, be forgiving and treat it as text
+            next = rest.indexOf('<', 1);
+            if (next < 0) { break }
+            textEnd += next;
+            rest = html.slice(textEnd);
+          }
+          text = html.substring(0, textEnd);
+        }
+
+        if (textEnd < 0) {
+          text = html;
+        }
+
+        if (text) {
+          advance(text.length);
+        }
+
+        if (options.chars && text) {
+          options.chars(text, index - text.length, index);
+        }
+      } else {
+        var endTagLength = 0;
+        var stackedTag = lastTag.toLowerCase();
+        var reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)(</' + stackedTag + '[^>]*>)', 'i'));
+        var rest$1 = html.replace(reStackedTag, function (all, text, endTag) {
+          endTagLength = endTag.length;
+          if (!isPlainTextElement(stackedTag) && stackedTag !== 'noscript') {
+            text = text
+              .replace(/<!\--([\s\S]*?)-->/g, '$1') // #7298
+              .replace(/<!\[CDATA\[([\s\S]*?)]]>/g, '$1');
+          }
+          if (shouldIgnoreFirstNewline(stackedTag, text)) {
+            text = text.slice(1);
+          }
+          if (options.chars) {
+            options.chars(text);
+          }
+          return ''
+        });
+        index += html.length - rest$1.length;
+        html = rest$1;
+        parseEndTag(stackedTag, index - endTagLength, index);
+      }
+
+      if (html === last) {
+        options.chars && options.chars(html);
+        if (!stack.length && options.warn) {
+          options.warn(("Mal-formatted tag at end of template: \"" + html + "\""), { start: index + html.length });
+        }
+        break
+      }
+    }
+
+    // Clean up any remaining tags
+    parseEndTag();
+
+    function advance (n) {
+      index += n;
+      html = html.substring(n);
+    }
+
+    function parseStartTag () {
+      var start = html.match(startTagOpen);
+      if (start) {
+        var match = {
+          tagName: start[1],
+          attrs: [],
+          start: index
+        };
+        advance(start[0].length);
+        var end, attr;
+        while (!(end = html.match(startTagClose)) && (attr = html.match(dynamicArgAttribute) || html.match(attribute))) {
+          attr.start = index;
+          advance(attr[0].length);
+          attr.end = index;
+          match.attrs.push(attr);
+        }
+        if (end) {
+          match.unarySlash = end[1];
+          advance(end[0].length);
+          match.end = index;
+          return match
+        }
+      }
+    }
+
+    function handleStartTag (match) {
+      var tagName = match.tagName;
+      var unarySlash = match.unarySlash;
+
+      if (expectHTML) {
+        if (lastTag === 'p' && isNonPhrasingTag(tagName)) {
+          parseEndTag(lastTag);
+        }
+        if (canBeLeftOpenTag$$1(tagName) && lastTag === tagName) {
+          parseEndTag(tagName);
+        }
+      }
+
+      var unary = isUnaryTag$$1(tagName) || !!unarySlash;
+
+      var l = match.attrs.length;
+      var attrs = new Array(l);
+      for (var i = 0; i < l; i++) {
+        var args = match.attrs[i];
+        var value = args[3] || args[4] || args[5] || '';
+        var shouldDecodeNewlines = tagName === 'a' && args[1] === 'href'
+          ? options.shouldDecodeNewlinesForHref
+          : options.shouldDecodeNewlines;
+        attrs[i] = {
+          name: args[1],
+          value: decodeAttr(value, shouldDecodeNewlines)
+        };
+        if (options.outputSourceRange) {
+          attrs[i].start = args.start + args[0].match(/^\s*/).length;
+          attrs[i].end = args.end;
+        }
+      }
+
+      if (!unary) {
+        stack.push({ tag: tagName, lowerCasedTag: tagName.toLowerCase(), attrs: attrs, start: match.start, end: match.end });
+        lastTag = tagName;
+      }
+
+      if (options.start) {
+        options.start(tagName, attrs, unary, match.start, match.end);
+      }
+    }
+
+    function parseEndTag (tagName, start, end) {
+      var pos, lowerCasedTagName;
+      if (start == null) { start = index; }
+      if (end == null) { end = index; }
+
+      // Find the closest opened tag of the same type
+      if (tagName) {
+        lowerCasedTagName = tagName.toLowerCase();
+        for (pos = stack.length - 1; pos >= 0; pos--) {
+          if (stack[pos].lowerCasedTag === lowerCasedTagName) {
+            break
+          }
+        }
+      } else {
+        // If no tag name is provided, clean shop
+        pos = 0;
+      }
+
+      if (pos >= 0) {
+        // Close all the open elements, up the stack
+        for (var i = stack.length - 1; i >= pos; i--) {
+          if (i > pos || !tagName &&
+            options.warn
+          ) {
+            options.warn(
+              ("tag <" + (stack[i].tag) + "> has no matching end tag."),
+              { start: stack[i].start, end: stack[i].end }
+            );
+          }
+          if (options.end) {
+            options.end(stack[i].tag, start, end);
+          }
+        }
+
+        // Remove the open elements from the stack
+        stack.length = pos;
+        lastTag = pos && stack[pos - 1].tag;
+      } else if (lowerCasedTagName === 'br') {
+        if (options.start) {
+          options.start(tagName, [], true, start, end);
+        }
+      } else if (lowerCasedTagName === 'p') {
+        if (options.start) {
+          options.start(tagName, [], false, start, end);
+        }
+        if (options.end) {
+          options.end(tagName, start, end);
+        }
+      }
+    }
+  }
+
+  /*  */
+
+  var onRE = /^@|^v-on:/;
+  var dirRE = /^v-|^@|^:|^#/;
+  var forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/;
+  var forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/;
+  var stripParensRE = /^\(|\)$/g;
+  var dynamicArgRE = /^\[.*\]$/;
+
+  var argRE = /:(.*)$/;
+  var bindRE = /^:|^\.|^v-bind:/;
+  var modifierRE = /\.[^.\]]+(?=[^\]]*$)/g;
+
+  var slotRE = /^v-slot(:|$)|^#/;
+
+  var lineBreakRE = /[\r\n]/;
+  var whitespaceRE$1 = /\s+/g;
+
+  var invalidAttributeRE = /[\s"'<>\/=]/;
+
+  var decodeHTMLCached = cached(he.decode);
+
+  var emptySlotScopeToken = "_empty_";
+
+  // configurable state
+  var warn$2;
+  var delimiters;
+  var transforms;
+  var preTransforms;
+  var postTransforms;
+  var platformIsPreTag;
+  var platformMustUseProp;
+  var platformGetTagNamespace;
+  var maybeComponent;
+
+  function createASTElement (
+    tag,
+    attrs,
+    parent
+  ) {
+    return {
+      type: 1,
+      tag: tag,
+      attrsList: attrs,
+      attrsMap: makeAttrsMap(attrs),
+      rawAttrsMap: {},
+      parent: parent,
+      children: []
+    }
+  }
+
+  /**
+   * Convert HTML string to AST.
+   */
+  function parse (
+    template,
+    options
+  ) {
+    warn$2 = options.warn || baseWarn;
+
+    platformIsPreTag = options.isPreTag || no;
+    platformMustUseProp = options.mustUseProp || no;
+    platformGetTagNamespace = options.getTagNamespace || no;
+    var isReservedTag = options.isReservedTag || no;
+    maybeComponent = function (el) { return !!el.component || !isReservedTag(el.tag); };
+
+    transforms = pluckModuleFunction(options.modules, 'transformNode');
+    preTransforms = pluckModuleFunction(options.modules, 'preTransformNode');
+    postTransforms = pluckModuleFunction(options.modules, 'postTransformNode');
+
+    delimiters = options.delimiters;
+
+    var stack = [];
+    var preserveWhitespace = options.preserveWhitespace !== false;
+    var whitespaceOption = options.whitespace;
+    var root;
+    var currentParent;
+    var inVPre = false;
+    var inPre = false;
+    var warned = false;
+
+    function warnOnce (msg, range) {
+      if (!warned) {
+        warned = true;
+        warn$2(msg, range);
+      }
+    }
+
+    function closeElement (element) {
+      trimEndingWhitespace(element);
+      if (!inVPre && !element.processed) {
+        element = processElement(element, options);
+      }
+      // tree management
+      if (!stack.length && element !== root) {
+        // allow root elements with v-if, v-else-if and v-else
+        if (root.if && (element.elseif || element.else)) {
+          {
+            checkRootConstraints(element);
+          }
+          addIfCondition(root, {
+            exp: element.elseif,
+            block: element
+          });
+        } else {
+          warnOnce(
+            "Component template should contain exactly one root element. " +
+            "If you are using v-if on multiple elements, " +
+            "use v-else-if to chain them instead.",
+            { start: element.start }
+          );
+        }
+      }
+      if (currentParent && !element.forbidden) {
+        if (element.elseif || element.else) {
+          processIfConditions(element, currentParent);
+        } else {
+          if (element.slotScope) {
+            // scoped slot
+            // keep it in the children list so that v-else(-if) conditions can
+            // find it as the prev node.
+            var name = element.slotTarget || '"default"'
+            ;(currentParent.scopedSlots || (currentParent.scopedSlots = {}))[name] = element;
+          }
+          currentParent.children.push(element);
+          element.parent = currentParent;
+        }
+      }
+
+      // final children cleanup
+      // filter out scoped slots
+      element.children = element.children.filter(function (c) { return !(c).slotScope; });
+      // remove trailing whitespace node again
+      trimEndingWhitespace(element);
+
+      // check pre state
+      if (element.pre) {
+        inVPre = false;
+      }
+      if (platformIsPreTag(element.tag)) {
+        inPre = false;
+      }
+      // apply post-transforms
+      for (var i = 0; i < postTransforms.length; i++) {
+        postTransforms[i](element, options);
+      }
+    }
+
+    function trimEndingWhitespace (el) {
+      // remove trailing whitespace node
+      if (!inPre) {
+        var lastNode;
+        while (
+          (lastNode = el.children[el.children.length - 1]) &&
+          lastNode.type === 3 &&
+          lastNode.text === ' '
+        ) {
+          el.children.pop();
+        }
+      }
+    }
+
+    function checkRootConstraints (el) {
+      if (el.tag === 'slot' || el.tag === 'template') {
+        warnOnce(
+          "Cannot use <" + (el.tag) + "> as component root element because it may " +
+          'contain multiple nodes.',
+          { start: el.start }
+        );
+      }
+      if (el.attrsMap.hasOwnProperty('v-for')) {
+        warnOnce(
+          'Cannot use v-for on stateful component root element because ' +
+          'it renders multiple elements.',
+          el.rawAttrsMap['v-for']
+        );
+      }
+    }
+
+    parseHTML(template, {
+      warn: warn$2,
+      expectHTML: options.expectHTML,
+      isUnaryTag: options.isUnaryTag,
+      canBeLeftOpenTag: options.canBeLeftOpenTag,
+      shouldDecodeNewlines: options.shouldDecodeNewlines,
+      shouldDecodeNewlinesForHref: options.shouldDecodeNewlinesForHref,
+      shouldKeepComment: options.comments,
+      outputSourceRange: options.outputSourceRange,
+      start: function start (tag, attrs, unary, start$1, end) {
+        // check namespace.
+        // inherit parent ns if there is one
+        var ns = (currentParent && currentParent.ns) || platformGetTagNamespace(tag);
+
+        // handle IE svg bug
+        /* istanbul ignore if */
+        if (isIE && ns === 'svg') {
+          attrs = guardIESVGBug(attrs);
+        }
+
+        var element = createASTElement(tag, attrs, currentParent);
+        if (ns) {
+          element.ns = ns;
+        }
+
+        {
+          if (options.outputSourceRange) {
+            element.start = start$1;
+            element.end = end;
+            element.rawAttrsMap = element.attrsList.reduce(function (cumulated, attr) {
+              cumulated[attr.name] = attr;
+              return cumulated
+            }, {});
+          }
+          attrs.forEach(function (attr) {
+            if (invalidAttributeRE.test(attr.name)) {
+              warn$2(
+                "Invalid dynamic argument expression: attribute names cannot contain " +
+                "spaces, quotes, <, >, / or =.",
+                {
+                  start: attr.start + attr.name.indexOf("["),
+                  end: attr.start + attr.name.length
+                }
+              );
+            }
+          });
+        }
+
+        if (isForbiddenTag(element) && !isServerRendering()) {
+          element.forbidden = true;
+          warn$2(
+            'Templates should only be responsible for mapping the state to the ' +
+            'UI. Avoid placing tags with side-effects in your templates, such as ' +
+            "<" + tag + ">" + ', as they will not be parsed.',
+            { start: element.start }
+          );
+        }
+
+        // apply pre-transforms
+        for (var i = 0; i < preTransforms.length; i++) {
+          element = preTransforms[i](element, options) || element;
+        }
+
+        if (!inVPre) {
+          processPre(element);
+          if (element.pre) {
+            inVPre = true;
+          }
+        }
+        if (platformIsPreTag(element.tag)) {
+          inPre = true;
+        }
+        if (inVPre) {
+          processRawAttrs(element);
+        } else if (!element.processed) {
+          // structural directives
+          processFor(element);
+          processIf(element);
+          processOnce(element);
+        }
+
+        if (!root) {
+          root = element;
+          {
+            checkRootConstraints(root);
+          }
+        }
+
+        if (!unary) {
+          currentParent = element;
+          stack.push(element);
+        } else {
+          closeElement(element);
+        }
+      },
+
+      end: function end (tag, start, end$1) {
+        var element = stack[stack.length - 1];
+        // pop stack
+        stack.length -= 1;
+        currentParent = stack[stack.length - 1];
+        if (options.outputSourceRange) {
+          element.end = end$1;
+        }
+        closeElement(element);
+      },
+
+      chars: function chars (text, start, end) {
+        if (!currentParent) {
+          {
+            if (text === template) {
+              warnOnce(
+                'Component template requires a root element, rather than just text.',
+                { start: start }
+              );
+            } else if ((text = text.trim())) {
+              warnOnce(
+                ("text \"" + text + "\" outside root element will be ignored."),
+                { start: start }
+              );
+            }
+          }
+          return
+        }
+        // IE textarea placeholder bug
+        /* istanbul ignore if */
+        if (isIE &&
+          currentParent.tag === 'textarea' &&
+          currentParent.attrsMap.placeholder === text
+        ) {
+          return
+        }
+        var children = currentParent.children;
+        if (inPre || text.trim()) {
+          text = isTextTag(currentParent) ? text : decodeHTMLCached(text);
+        } else if (!children.length) {
+          // remove the whitespace-only node right after an opening tag
+          text = '';
+        } else if (whitespaceOption) {
+          if (whitespaceOption === 'condense') {
+            // in condense mode, remove the whitespace node if it contains
+            // line break, otherwise condense to a single space
+            text = lineBreakRE.test(text) ? '' : ' ';
+          } else {
+            text = ' ';
+          }
+        } else {
+          text = preserveWhitespace ? ' ' : '';
+        }
+        if (text) {
+          if (!inPre && whitespaceOption === 'condense') {
+            // condense consecutive whitespaces into single space
+            text = text.replace(whitespaceRE$1, ' ');
+          }
+          var res;
+          var child;
+          if (!inVPre && text !== ' ' && (res = parseText(text, delimiters))) {
+            child = {
+              type: 2,
+              expression: res.expression,
+              tokens: res.tokens,
+              text: text
+            };
+          } else if (text !== ' ' || !children.length || children[children.length - 1].text !== ' ') {
+            child = {
+              type: 3,
+              text: text
+            };
+          }
+          if (child) {
+            if (options.outputSourceRange) {
+              child.start = start;
+              child.end = end;
+            }
+            children.push(child);
+          }
+        }
+      },
+      comment: function comment (text, start, end) {
+        // adding anything as a sibling to the root node is forbidden
+        // comments should still be allowed, but ignored
+        if (currentParent) {
+          var child = {
+            type: 3,
+            text: text,
+            isComment: true
+          };
+          if (options.outputSourceRange) {
+            child.start = start;
+            child.end = end;
+          }
+          currentParent.children.push(child);
+        }
+      }
+    });
+    return root
+  }
+
+  function processPre (el) {
+    if (getAndRemoveAttr(el, 'v-pre') != null) {
+      el.pre = true;
+    }
+  }
+
+  function processRawAttrs (el) {
+    var list = el.attrsList;
+    var len = list.length;
+    if (len) {
+      var attrs = el.attrs = new Array(len);
+      for (var i = 0; i < len; i++) {
+        attrs[i] = {
+          name: list[i].name,
+          value: JSON.stringify(list[i].value)
+        };
+        if (list[i].start != null) {
+          attrs[i].start = list[i].start;
+          attrs[i].end = list[i].end;
+        }
+      }
+    } else if (!el.pre) {
+      // non root node in pre blocks with no attributes
+      el.plain = true;
+    }
+  }
+
+  function processElement (
+    element,
+    options
+  ) {
+    processKey(element);
+
+    // determine whether this is a plain element after
+    // removing structural attributes
+    element.plain = (
+      !element.key &&
+      !element.scopedSlots &&
+      !element.attrsList.length
+    );
+
+    processRef(element);
+    processSlotContent(element);
+    processSlotOutlet(element);
+    processComponent(element);
+    for (var i = 0; i < transforms.length; i++) {
+      element = transforms[i](element, options) || element;
+    }
+    processAttrs(element);
+    return element
+  }
+
+  function processKey (el) {
+    var exp = getBindingAttr(el, 'key');
+    if (exp) {
+      {
+        if (el.tag === 'template') {
+          warn$2(
+            "<template> cannot be keyed. Place the key on real elements instead.",
+            getRawBindingAttr(el, 'key')
+          );
+        }
+        if (el.for) {
+          var iterator = el.iterator2 || el.iterator1;
+          var parent = el.parent;
+          if (iterator && iterator === exp && parent && parent.tag === 'transition-group') {
+            warn$2(
+              "Do not use v-for index as key on <transition-group> children, " +
+              "this is the same as not using keys.",
+              getRawBindingAttr(el, 'key'),
+              true /* tip */
+            );
+          }
+        }
+      }
+      el.key = exp;
+    }
+  }
+
+  function processRef (el) {
+    var ref = getBindingAttr(el, 'ref');
+    if (ref) {
+      el.ref = ref;
+      el.refInFor = checkInFor(el);
+    }
+  }
+
+  function processFor (el) {
+    var exp;
+    if ((exp = getAndRemoveAttr(el, 'v-for'))) {
+      var res = parseFor(exp);
+      if (res) {
+        extend(el, res);
+      } else {
+        warn$2(
+          ("Invalid v-for expression: " + exp),
+          el.rawAttrsMap['v-for']
+        );
+      }
+    }
+  }
+
+
+
+  function parseFor (exp) {
+    var inMatch = exp.match(forAliasRE);
+    if (!inMatch) { return }
+    var res = {};
+    res.for = inMatch[2].trim();
+    var alias = inMatch[1].trim().replace(stripParensRE, '');
+    var iteratorMatch = alias.match(forIteratorRE);
+    if (iteratorMatch) {
+      res.alias = alias.replace(forIteratorRE, '').trim();
+      res.iterator1 = iteratorMatch[1].trim();
+      if (iteratorMatch[2]) {
+        res.iterator2 = iteratorMatch[2].trim();
+      }
+    } else {
+      res.alias = alias;
+    }
+    return res
+  }
+
+  function processIf (el) {
+    var exp = getAndRemoveAttr(el, 'v-if');
+    if (exp) {
+      el.if = exp;
+      addIfCondition(el, {
+        exp: exp,
+        block: el
+      });
+    } else {
+      if (getAndRemoveAttr(el, 'v-else') != null) {
+        el.else = true;
+      }
+      var elseif = getAndRemoveAttr(el, 'v-else-if');
+      if (elseif) {
+        el.elseif = elseif;
+      }
+    }
+  }
+
+  function processIfConditions (el, parent) {
+    var prev = findPrevElement(parent.children);
+    if (prev && prev.if) {
+      addIfCondition(prev, {
+        exp: el.elseif,
+        block: el
+      });
+    } else {
+      warn$2(
+        "v-" + (el.elseif ? ('else-if="' + el.elseif + '"') : 'else') + " " +
+        "used on element <" + (el.tag) + "> without corresponding v-if.",
+        el.rawAttrsMap[el.elseif ? 'v-else-if' : 'v-else']
+      );
+    }
+  }
+
+  function findPrevElement (children) {
+    var i = children.length;
+    while (i--) {
+      if (children[i].type === 1) {
+        return children[i]
+      } else {
+        if (children[i].text !== ' ') {
+          warn$2(
+            "text \"" + (children[i].text.trim()) + "\" between v-if and v-else(-if) " +
+            "will be ignored.",
+            children[i]
+          );
+        }
+        children.pop();
+      }
+    }
+  }
+
+  function addIfCondition (el, condition) {
+    if (!el.ifConditions) {
+      el.ifConditions = [];
+    }
+    el.ifConditions.push(condition);
+  }
+
+  function processOnce (el) {
+    var once$$1 = getAndRemoveAttr(el, 'v-once');
+    if (once$$1 != null) {
+      el.once = true;
+    }
+  }
+
+  // handle content being passed to a component as slot,
+  // e.g. <template slot="xxx">, <div slot-scope="xxx">
+  function processSlotContent (el) {
+    var slotScope;
+    if (el.tag === 'template') {
+      slotScope = getAndRemoveAttr(el, 'scope');
+      /* istanbul ignore if */
+      if (slotScope) {
+        warn$2(
+          "the \"scope\" attribute for scoped slots have been deprecated and " +
+          "replaced by \"slot-scope\" since 2.5. The new \"slot-scope\" attribute " +
+          "can also be used on plain elements in addition to <template> to " +
+          "denote scoped slots.",
+          el.rawAttrsMap['scope'],
+          true
+        );
+      }
+      el.slotScope = slotScope || getAndRemoveAttr(el, 'slot-scope');
+    } else if ((slotScope = getAndRemoveAttr(el, 'slot-scope'))) {
+      /* istanbul ignore if */
+      if (el.attrsMap['v-for']) {
+        warn$2(
+          "Ambiguous combined usage of slot-scope and v-for on <" + (el.tag) + "> " +
+          "(v-for takes higher priority). Use a wrapper <template> for the " +
+          "scoped slot to make it clearer.",
+          el.rawAttrsMap['slot-scope'],
+          true
+        );
+      }
+      el.slotScope = slotScope;
+    }
+
+    // slot="xxx"
+    var slotTarget = getBindingAttr(el, 'slot');
+    if (slotTarget) {
+      el.slotTarget = slotTarget === '""' ? '"default"' : slotTarget;
+      el.slotTargetDynamic = !!(el.attrsMap[':slot'] || el.attrsMap['v-bind:slot']);
+      // preserve slot as an attribute for native shadow DOM compat
+      // only for non-scoped slots.
+      if (el.tag !== 'template' && !el.slotScope) {
+        addAttr(el, 'slot', slotTarget, getRawBindingAttr(el, 'slot'));
+      }
+    }
+
+    // 2.6 v-slot syntax
+    {
+      if (el.tag === 'template') {
+        // v-slot on <template>
+        var slotBinding = getAndRemoveAttrByRegex(el, slotRE);
+        if (slotBinding) {
+          {
+            if (el.slotTarget || el.slotScope) {
+              warn$2(
+                "Unexpected mixed usage of different slot syntaxes.",
+                el
+              );
+            }
+            if (el.parent && !maybeComponent(el.parent)) {
+              warn$2(
+                "<template v-slot> can only appear at the root level inside " +
+                "the receiving component",
+                el
+              );
+            }
+          }
+          var ref = getSlotName(slotBinding);
+          var name = ref.name;
+          var dynamic = ref.dynamic;
+          el.slotTarget = name;
+          el.slotTargetDynamic = dynamic;
+          el.slotScope = slotBinding.value || emptySlotScopeToken; // force it into a scoped slot for perf
+        }
+      } else {
+        // v-slot on component, denotes default slot
+        var slotBinding$1 = getAndRemoveAttrByRegex(el, slotRE);
+        if (slotBinding$1) {
+          {
+            if (!maybeComponent(el)) {
+              warn$2(
+                "v-slot can only be used on components or <template>.",
+                slotBinding$1
+              );
+            }
+            if (el.slotScope || el.slotTarget) {
+              warn$2(
+                "Unexpected mixed usage of different slot syntaxes.",
+                el
+              );
+            }
+            if (el.scopedSlots) {
+              warn$2(
+                "To avoid scope ambiguity, the default slot should also use " +
+                "<template> syntax when there are other named slots.",
+                slotBinding$1
+              );
+            }
+          }
+          // add the component's children to its default slot
+          var slots = el.scopedSlots || (el.scopedSlots = {});
+          var ref$1 = getSlotName(slotBinding$1);
+          var name$1 = ref$1.name;
+          var dynamic$1 = ref$1.dynamic;
+          var slotContainer = slots[name$1] = createASTElement('template', [], el);
+          slotContainer.slotTarget = name$1;
+          slotContainer.slotTargetDynamic = dynamic$1;
+          slotContainer.children = el.children.filter(function (c) {
+            if (!c.slotScope) {
+              c.parent = slotContainer;
+              return true
+            }
+          });
+          slotContainer.slotScope = slotBinding$1.value || emptySlotScopeToken;
+          // remove children as they are returned from scopedSlots now
+          el.children = [];
+          // mark el non-plain so data gets generated
+          el.plain = false;
+        }
+      }
+    }
+  }
+
+  function getSlotName (binding) {
+    var name = binding.name.replace(slotRE, '');
+    if (!name) {
+      if (binding.name[0] !== '#') {
+        name = 'default';
+      } else {
+        warn$2(
+          "v-slot shorthand syntax requires a slot name.",
+          binding
+        );
+      }
+    }
+    return dynamicArgRE.test(name)
+      // dynamic [name]
+      ? { name: name.slice(1, -1), dynamic: true }
+      // static name
+      : { name: ("\"" + name + "\""), dynamic: false }
+  }
+
+  // handle <slot/> outlets
+  function processSlotOutlet (el) {
+    if (el.tag === 'slot') {
+      el.slotName = getBindingAttr(el, 'name');
+      if (el.key) {
+        warn$2(
+          "`key` does not work on <slot> because slots are abstract outlets " +
+          "and can possibly expand into multiple elements. " +
+          "Use the key on a wrapping element instead.",
+          getRawBindingAttr(el, 'key')
+        );
+      }
+    }
+  }
+
+  function processComponent (el) {
+    var binding;
+    if ((binding = getBindingAttr(el, 'is'))) {
+      el.component = binding;
+    }
+    if (getAndRemoveAttr(el, 'inline-template') != null) {
+      el.inlineTemplate = true;
+    }
+  }
+
+  function processAttrs (el) {
+    var list = el.attrsList;
+    var i, l, name, rawName, value, modifiers, syncGen, isDynamic;
+    for (i = 0, l = list.length; i < l; i++) {
+      name = rawName = list[i].name;
+      value = list[i].value;
+      if (dirRE.test(name)) {
+        // mark element as dynamic
+        el.hasBindings = true;
+        // modifiers
+        modifiers = parseModifiers(name.replace(dirRE, ''));
+        // support .foo shorthand syntax for the .prop modifier
+        if (modifiers) {
+          name = name.replace(modifierRE, '');
+        }
+        if (bindRE.test(name)) { // v-bind
+          name = name.replace(bindRE, '');
+          value = parseFilters(value);
+          isDynamic = dynamicArgRE.test(name);
+          if (isDynamic) {
+            name = name.slice(1, -1);
+          }
+          if (
+            value.trim().length === 0
+          ) {
+            warn$2(
+              ("The value for a v-bind expression cannot be empty. Found in \"v-bind:" + name + "\"")
+            );
+          }
+          if (modifiers) {
+            if (modifiers.prop && !isDynamic) {
+              name = camelize(name);
+              if (name === 'innerHtml') { name = 'innerHTML'; }
+            }
+            if (modifiers.camel && !isDynamic) {
+              name = camelize(name);
+            }
+            if (modifiers.sync) {
+              syncGen = genAssignmentCode(value, "$event");
+              if (!isDynamic) {
+                addHandler(
+                  el,
+                  ("update:" + (camelize(name))),
+                  syncGen,
+                  null,
+                  false,
+                  warn$2,
+                  list[i]
+                );
+                if (hyphenate(name) !== camelize(name)) {
+                  addHandler(
+                    el,
+                    ("update:" + (hyphenate(name))),
+                    syncGen,
+                    null,
+                    false,
+                    warn$2,
+                    list[i]
+                  );
+                }
+              } else {
+                // handler w/ dynamic event name
+                addHandler(
+                  el,
+                  ("\"update:\"+(" + name + ")"),
+                  syncGen,
+                  null,
+                  false,
+                  warn$2,
+                  list[i],
+                  true // dynamic
+                );
+              }
+            }
+          }
+          if ((modifiers && modifiers.prop) || (
+            !el.component && platformMustUseProp(el.tag, el.attrsMap.type, name)
+          )) {
+            addProp(el, name, value, list[i], isDynamic);
+          } else {
+            addAttr(el, name, value, list[i], isDynamic);
+          }
+        } else if (onRE.test(name)) { // v-on
+          name = name.replace(onRE, '');
+          isDynamic = dynamicArgRE.test(name);
+          if (isDynamic) {
+            name = name.slice(1, -1);
+          }
+          addHandler(el, name, value, modifiers, false, warn$2, list[i], isDynamic);
+        } else { // normal directives
+          name = name.replace(dirRE, '');
+          // parse arg
+          var argMatch = name.match(argRE);
+          var arg = argMatch && argMatch[1];
+          isDynamic = false;
+          if (arg) {
+            name = name.slice(0, -(arg.length + 1));
+            if (dynamicArgRE.test(arg)) {
+              arg = arg.slice(1, -1);
+              isDynamic = true;
+            }
+          }
+          addDirective(el, name, rawName, value, arg, isDynamic, modifiers, list[i]);
+          if (name === 'model') {
+            checkForAliasModel(el, value);
+          }
+        }
+      } else {
+        // literal attribute
+        {
+          var res = parseText(value, delimiters);
+          if (res) {
+            warn$2(
+              name + "=\"" + value + "\": " +
+              'Interpolation inside attributes has been removed. ' +
+              'Use v-bind or the colon shorthand instead. For example, ' +
+              'instead of <div id="{{ val }}">, use <div :id="val">.',
+              list[i]
+            );
+          }
+        }
+        addAttr(el, name, JSON.stringify(value), list[i]);
+        // #6887 firefox doesn't update muted state if set via attribute
+        // even immediately after element creation
+        if (!el.component &&
+            name === 'muted' &&
+            platformMustUseProp(el.tag, el.attrsMap.type, name)) {
+          addProp(el, name, 'true', list[i]);
+        }
+      }
+    }
+  }
+
+  function checkInFor (el) {
+    var parent = el;
+    while (parent) {
+      if (parent.for !== undefined) {
+        return true
+      }
+      parent = parent.parent;
+    }
+    return false
+  }
+
+  function parseModifiers (name) {
+    var match = name.match(modifierRE);
+    if (match) {
+      var ret = {};
+      match.forEach(function (m) { ret[m.slice(1)] = true; });
+      return ret
+    }
+  }
+
+  function makeAttrsMap (attrs) {
+    var map = {};
+    for (var i = 0, l = attrs.length; i < l; i++) {
+      if (
+        map[attrs[i].name] && !isIE && !isEdge
+      ) {
+        warn$2('duplicate attribute: ' + attrs[i].name, attrs[i]);
+      }
+      map[attrs[i].name] = attrs[i].value;
+    }
+    return map
+  }
+
+  // for script (e.g. type="x/template") or style, do not decode content
+  function isTextTag (el) {
+    return el.tag === 'script' || el.tag === 'style'
+  }
+
+  function isForbiddenTag (el) {
+    return (
+      el.tag === 'style' ||
+      (el.tag === 'script' && (
+        !el.attrsMap.type ||
+        el.attrsMap.type === 'text/javascript'
+      ))
+    )
+  }
+
+  var ieNSBug = /^xmlns:NS\d+/;
+  var ieNSPrefix = /^NS\d+:/;
+
+  /* istanbul ignore next */
+  function guardIESVGBug (attrs) {
+    var res = [];
+    for (var i = 0; i < attrs.length; i++) {
+      var attr = attrs[i];
+      if (!ieNSBug.test(attr.name)) {
+        attr.name = attr.name.replace(ieNSPrefix, '');
+        res.push(attr);
+      }
+    }
+    return res
+  }
+
+  function checkForAliasModel (el, value) {
+    var _el = el;
+    while (_el) {
+      if (_el.for && _el.alias === value) {
+        warn$2(
+          "<" + (el.tag) + " v-model=\"" + value + "\">: " +
+          "You are binding v-model directly to a v-for iteration alias. " +
+          "This will not be able to modify the v-for source array because " +
+          "writing to the alias is like modifying a function local variable. " +
+          "Consider using an array of objects and use v-model on an object property instead.",
+          el.rawAttrsMap['v-model']
+        );
+      }
+      _el = _el.parent;
+    }
+  }
+
+  /*  */
+
+  function preTransformNode (el, options) {
+    if (el.tag === 'input') {
+      var map = el.attrsMap;
+      if (!map['v-model']) {
+        return
+      }
+
+      var typeBinding;
+      if (map[':type'] || map['v-bind:type']) {
+        typeBinding = getBindingAttr(el, 'type');
+      }
+      if (!map.type && !typeBinding && map['v-bind']) {
+        typeBinding = "(" + (map['v-bind']) + ").type";
+      }
+
+      if (typeBinding) {
+        var ifCondition = getAndRemoveAttr(el, 'v-if', true);
+        var ifConditionExtra = ifCondition ? ("&&(" + ifCondition + ")") : "";
+        var hasElse = getAndRemoveAttr(el, 'v-else', true) != null;
+        var elseIfCondition = getAndRemoveAttr(el, 'v-else-if', true);
+        // 1. checkbox
+        var branch0 = cloneASTElement(el);
+        // process for on the main node
+        processFor(branch0);
+        addRawAttr(branch0, 'type', 'checkbox');
+        processElement(branch0, options);
+        branch0.processed = true; // prevent it from double-processed
+        branch0.if = "(" + typeBinding + ")==='checkbox'" + ifConditionExtra;
+        addIfCondition(branch0, {
+          exp: branch0.if,
+          block: branch0
+        });
+        // 2. add radio else-if condition
+        var branch1 = cloneASTElement(el);
+        getAndRemoveAttr(branch1, 'v-for', true);
+        addRawAttr(branch1, 'type', 'radio');
+        processElement(branch1, options);
+        addIfCondition(branch0, {
+          exp: "(" + typeBinding + ")==='radio'" + ifConditionExtra,
+          block: branch1
+        });
+        // 3. other
+        var branch2 = cloneASTElement(el);
+        getAndRemoveAttr(branch2, 'v-for', true);
+        addRawAttr(branch2, ':type', typeBinding);
+        processElement(branch2, options);
+        addIfCondition(branch0, {
+          exp: ifCondition,
+          block: branch2
+        });
+
+        if (hasElse) {
+          branch0.else = true;
+        } else if (elseIfCondition) {
+          branch0.elseif = elseIfCondition;
+        }
+
+        return branch0
+      }
+    }
+  }
+
+  function cloneASTElement (el) {
+    return createASTElement(el.tag, el.attrsList.slice(), el.parent)
+  }
+
+  var model$1 = {
+    preTransformNode: preTransformNode
+  };
+
+  var modules$1 = [
+    klass$1,
+    style$1,
+    model$1
+  ];
+
+  /*  */
+
+  function text (el, dir) {
+    if (dir.value) {
+      addProp(el, 'textContent', ("_s(" + (dir.value) + ")"), dir);
+    }
+  }
+
+  /*  */
+
+  function html (el, dir) {
+    if (dir.value) {
+      addProp(el, 'innerHTML', ("_s(" + (dir.value) + ")"), dir);
+    }
+  }
+
+  var directives$1 = {
+    model: model,
+    text: text,
+    html: html
+  };
+
+  /*  */
+
+  var baseOptions = {
+    expectHTML: true,
+    modules: modules$1,
+    directives: directives$1,
+    isPreTag: isPreTag,
+    isUnaryTag: isUnaryTag,
+    mustUseProp: mustUseProp,
+    canBeLeftOpenTag: canBeLeftOpenTag,
+    isReservedTag: isReservedTag,
+    getTagNamespace: getTagNamespace,
+    staticKeys: genStaticKeys(modules$1)
+  };
+
+  /*  */
+
+  var isStaticKey;
+  var isPlatformReservedTag;
+
+  var genStaticKeysCached = cached(genStaticKeys$1);
+
+  /**
+   * Goal of the optimizer: walk the generated template AST tree
+   * and detect sub-trees that are purely static, i.e. parts of
+   * the DOM that never needs to change.
+   *
+   * Once we detect these sub-trees, we can:
+   *
+   * 1. Hoist them into constants, so that we no longer need to
+   *    create fresh nodes for them on each re-render;
+   * 2. Completely skip them in the patching process.
+   */
+  function optimize (root, options) {
+    if (!root) { return }
+    isStaticKey = genStaticKeysCached(options.staticKeys || '');
+    isPlatformReservedTag = options.isReservedTag || no;
+    // first pass: mark all non-static nodes.
+    markStatic$1(root);
+    // second pass: mark static roots.
+    markStaticRoots(root, false);
+  }
+
+  function genStaticKeys$1 (keys) {
+    return makeMap(
+      'type,tag,attrsList,attrsMap,plain,parent,children,attrs,start,end,rawAttrsMap' +
+      (keys ? ',' + keys : '')
+    )
+  }
+
+  function markStatic$1 (node) {
+    node.static = isStatic(node);
+    if (node.type === 1) {
+      // do not make component slot content static. this avoids
+      // 1. components not able to mutate slot nodes
+      // 2. static slot content fails for hot-reloading
+      if (
+        !isPlatformReservedTag(node.tag) &&
+        node.tag !== 'slot' &&
+        node.attrsMap['inline-template'] == null
+      ) {
+        return
+      }
+      for (var i = 0, l = node.children.length; i < l; i++) {
+        var child = node.children[i];
+        markStatic$1(child);
+        if (!child.static) {
+          node.static = false;
+        }
+      }
+      if (node.ifConditions) {
+        for (var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
+          var block = node.ifConditions[i$1].block;
+          markStatic$1(block);
+          if (!block.static) {
+            node.static = false;
+          }
+        }
+      }
+    }
+  }
+
+  function markStaticRoots (node, isInFor) {
+    if (node.type === 1) {
+      if (node.static || node.once) {
+        node.staticInFor = isInFor;
+      }
+      // For a node to qualify as a static root, it should have children that
+      // are not just static text. Otherwise the cost of hoisting out will
+      // outweigh the benefits and it's better off to just always render it fresh.
+      if (node.static && node.children.length && !(
+        node.children.length === 1 &&
+        node.children[0].type === 3
+      )) {
+        node.staticRoot = true;
+        return
+      } else {
+        node.staticRoot = false;
+      }
+      if (node.children) {
+        for (var i = 0, l = node.children.length; i < l; i++) {
+          markStaticRoots(node.children[i], isInFor || !!node.for);
+        }
+      }
+      if (node.ifConditions) {
+        for (var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) {
+          markStaticRoots(node.ifConditions[i$1].block, isInFor);
+        }
+      }
+    }
+  }
+
+  function isStatic (node) {
+    if (node.type === 2) { // expression
+      return false
+    }
+    if (node.type === 3) { // text
+      return true
+    }
+    return !!(node.pre || (
+      !node.hasBindings && // no dynamic bindings
+      !node.if && !node.for && // not v-if or v-for or v-else
+      !isBuiltInTag(node.tag) && // not a built-in
+      isPlatformReservedTag(node.tag) && // not a component
+      !isDirectChildOfTemplateFor(node) &&
+      Object.keys(node).every(isStaticKey)
+    ))
+  }
+
+  function isDirectChildOfTemplateFor (node) {
+    while (node.parent) {
+      node = node.parent;
+      if (node.tag !== 'template') {
+        return false
+      }
+      if (node.for) {
+        return true
+      }
+    }
+    return false
+  }
+
+  /*  */
+
+  var fnExpRE = /^([\w$_]+|\([^)]*?\))\s*=>|^function(?:\s+[\w$]+)?\s*\(/;
+  var fnInvokeRE = /\([^)]*?\);*$/;
+  var simplePathRE = /^[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['[^']*?']|\["[^"]*?"]|\[\d+]|\[[A-Za-z_$][\w$]*])*$/;
+
+  // KeyboardEvent.keyCode aliases
+  var keyCodes = {
+    esc: 27,
+    tab: 9,
+    enter: 13,
+    space: 32,
+    up: 38,
+    left: 37,
+    right: 39,
+    down: 40,
+    'delete': [8, 46]
+  };
+
+  // KeyboardEvent.key aliases
+  var keyNames = {
+    // #7880: IE11 and Edge use `Esc` for Escape key name.
+    esc: ['Esc', 'Escape'],
+    tab: 'Tab',
+    enter: 'Enter',
+    // #9112: IE11 uses `Spacebar` for Space key name.
+    space: [' ', 'Spacebar'],
+    // #7806: IE11 uses key names without `Arrow` prefix for arrow keys.
+    up: ['Up', 'ArrowUp'],
+    left: ['Left', 'ArrowLeft'],
+    right: ['Right', 'ArrowRight'],
+    down: ['Down', 'ArrowDown'],
+    // #9112: IE11 uses `Del` for Delete key name.
+    'delete': ['Backspace', 'Delete', 'Del']
+  };
+
+  // #4868: modifiers that prevent the execution of the listener
+  // need to explicitly return null so that we can determine whether to remove
+  // the listener for .once
+  var genGuard = function (condition) { return ("if(" + condition + ")return null;"); };
+
+  var modifierCode = {
+    stop: '$event.stopPropagation();',
+    prevent: '$event.preventDefault();',
+    self: genGuard("$event.target !== $event.currentTarget"),
+    ctrl: genGuard("!$event.ctrlKey"),
+    shift: genGuard("!$event.shiftKey"),
+    alt: genGuard("!$event.altKey"),
+    meta: genGuard("!$event.metaKey"),
+    left: genGuard("'button' in $event && $event.button !== 0"),
+    middle: genGuard("'button' in $event && $event.button !== 1"),
+    right: genGuard("'button' in $event && $event.button !== 2")
+  };
+
+  function genHandlers (
+    events,
+    isNative
+  ) {
+    var prefix = isNative ? 'nativeOn:' : 'on:';
+    var staticHandlers = "";
+    var dynamicHandlers = "";
+    for (var name in events) {
+      var handlerCode = genHandler(events[name]);
+      if (events[name] && events[name].dynamic) {
+        dynamicHandlers += name + "," + handlerCode + ",";
+      } else {
+        staticHandlers += "\"" + name + "\":" + handlerCode + ",";
+      }
+    }
+    staticHandlers = "{" + (staticHandlers.slice(0, -1)) + "}";
+    if (dynamicHandlers) {
+      return prefix + "_d(" + staticHandlers + ",[" + (dynamicHandlers.slice(0, -1)) + "])"
+    } else {
+      return prefix + staticHandlers
+    }
+  }
+
+  function genHandler (handler) {
+    if (!handler) {
+      return 'function(){}'
+    }
+
+    if (Array.isArray(handler)) {
+      return ("[" + (handler.map(function (handler) { return genHandler(handler); }).join(',')) + "]")
+    }
+
+    var isMethodPath = simplePathRE.test(handler.value);
+    var isFunctionExpression = fnExpRE.test(handler.value);
+    var isFunctionInvocation = simplePathRE.test(handler.value.replace(fnInvokeRE, ''));
+
+    if (!handler.modifiers) {
+      if (isMethodPath || isFunctionExpression) {
+        return handler.value
+      }
+      return ("function($event){" + (isFunctionInvocation ? ("return " + (handler.value)) : handler.value) + "}") // inline statement
+    } else {
+      var code = '';
+      var genModifierCode = '';
+      var keys = [];
+      for (var key in handler.modifiers) {
+        if (modifierCode[key]) {
+          genModifierCode += modifierCode[key];
+          // left/right
+          if (keyCodes[key]) {
+            keys.push(key);
+          }
+        } else if (key === 'exact') {
+          var modifiers = (handler.modifiers);
+          genModifierCode += genGuard(
+            ['ctrl', 'shift', 'alt', 'meta']
+              .filter(function (keyModifier) { return !modifiers[keyModifier]; })
+              .map(function (keyModifier) { return ("$event." + keyModifier + "Key"); })
+              .join('||')
+          );
+        } else {
+          keys.push(key);
+        }
+      }
+      if (keys.length) {
+        code += genKeyFilter(keys);
+      }
+      // Make sure modifiers like prevent and stop get executed after key filtering
+      if (genModifierCode) {
+        code += genModifierCode;
+      }
+      var handlerCode = isMethodPath
+        ? ("return " + (handler.value) + "($event)")
+        : isFunctionExpression
+          ? ("return (" + (handler.value) + ")($event)")
+          : isFunctionInvocation
+            ? ("return " + (handler.value))
+            : handler.value;
+      return ("function($event){" + code + handlerCode + "}")
+    }
+  }
+
+  function genKeyFilter (keys) {
+    return (
+      // make sure the key filters only apply to KeyboardEvents
+      // #9441: can't use 'keyCode' in $event because Chrome autofill fires fake
+      // key events that do not have keyCode property...
+      "if(!$event.type.indexOf('key')&&" +
+      (keys.map(genFilterCode).join('&&')) + ")return null;"
+    )
+  }
+
+  function genFilterCode (key) {
+    var keyVal = parseInt(key, 10);
+    if (keyVal) {
+      return ("$event.keyCode!==" + keyVal)
+    }
+    var keyCode = keyCodes[key];
+    var keyName = keyNames[key];
+    return (
+      "_k($event.keyCode," +
+      (JSON.stringify(key)) + "," +
+      (JSON.stringify(keyCode)) + "," +
+      "$event.key," +
+      "" + (JSON.stringify(keyName)) +
+      ")"
+    )
+  }
+
+  /*  */
+
+  function on (el, dir) {
+    if (dir.modifiers) {
+      warn("v-on without argument does not support modifiers.");
+    }
+    el.wrapListeners = function (code) { return ("_g(" + code + "," + (dir.value) + ")"); };
+  }
+
+  /*  */
+
+  function bind$1 (el, dir) {
+    el.wrapData = function (code) {
+      return ("_b(" + code + ",'" + (el.tag) + "'," + (dir.value) + "," + (dir.modifiers && dir.modifiers.prop ? 'true' : 'false') + (dir.modifiers && dir.modifiers.sync ? ',true' : '') + ")")
+    };
+  }
+
+  /*  */
+
+  var baseDirectives = {
+    on: on,
+    bind: bind$1,
+    cloak: noop
+  };
+
+  /*  */
+
+
+
+
+
+  var CodegenState = function CodegenState (options) {
+    this.options = options;
+    this.warn = options.warn || baseWarn;
+    this.transforms = pluckModuleFunction(options.modules, 'transformCode');
+    this.dataGenFns = pluckModuleFunction(options.modules, 'genData');
+    this.directives = extend(extend({}, baseDirectives), options.directives);
+    var isReservedTag = options.isReservedTag || no;
+    this.maybeComponent = function (el) { return !!el.component || !isReservedTag(el.tag); };
+    this.onceId = 0;
+    this.staticRenderFns = [];
+    this.pre = false;
+  };
+
+
+
+  function generate (
+    ast,
+    options
+  ) {
+    var state = new CodegenState(options);
+    var code = ast ? genElement(ast, state) : '_c("div")';
+    return {
+      render: ("with(this){return " + code + "}"),
+      staticRenderFns: state.staticRenderFns
+    }
+  }
+
+  function genElement (el, state) {
+    if (el.parent) {
+      el.pre = el.pre || el.parent.pre;
+    }
+
+    if (el.staticRoot && !el.staticProcessed) {
+      return genStatic(el, state)
+    } else if (el.once && !el.onceProcessed) {
+      return genOnce(el, state)
+    } else if (el.for && !el.forProcessed) {
+      return genFor(el, state)
+    } else if (el.if && !el.ifProcessed) {
+      return genIf(el, state)
+    } else if (el.tag === 'template' && !el.slotTarget && !state.pre) {
+      return genChildren(el, state) || 'void 0'
+    } else if (el.tag === 'slot') {
+      return genSlot(el, state)
+    } else {
+      // component or element
+      var code;
+      if (el.component) {
+        code = genComponent(el.component, el, state);
+      } else {
+        var data;
+        if (!el.plain || (el.pre && state.maybeComponent(el))) {
+          data = genData$2(el, state);
+        }
+
+        var children = el.inlineTemplate ? null : genChildren(el, state, true);
+        code = "_c('" + (el.tag) + "'" + (data ? ("," + data) : '') + (children ? ("," + children) : '') + ")";
+      }
+      // module transforms
+      for (var i = 0; i < state.transforms.length; i++) {
+        code = state.transforms[i](el, code);
+      }
+      return code
+    }
+  }
+
+  // hoist static sub-trees out
+  function genStatic (el, state) {
+    el.staticProcessed = true;
+    // Some elements (templates) need to behave differently inside of a v-pre
+    // node.  All pre nodes are static roots, so we can use this as a location to
+    // wrap a state change and reset it upon exiting the pre node.
+    var originalPreState = state.pre;
+    if (el.pre) {
+      state.pre = el.pre;
+    }
+    state.staticRenderFns.push(("with(this){return " + (genElement(el, state)) + "}"));
+    state.pre = originalPreState;
+    return ("_m(" + (state.staticRenderFns.length - 1) + (el.staticInFor ? ',true' : '') + ")")
+  }
+
+  // v-once
+  function genOnce (el, state) {
+    el.onceProcessed = true;
+    if (el.if && !el.ifProcessed) {
+      return genIf(el, state)
+    } else if (el.staticInFor) {
+      var key = '';
+      var parent = el.parent;
+      while (parent) {
+        if (parent.for) {
+          key = parent.key;
+          break
+        }
+        parent = parent.parent;
+      }
+      if (!key) {
+        state.warn(
+          "v-once can only be used inside v-for that is keyed. ",
+          el.rawAttrsMap['v-once']
+        );
+        return genElement(el, state)
+      }
+      return ("_o(" + (genElement(el, state)) + "," + (state.onceId++) + "," + key + ")")
+    } else {
+      return genStatic(el, state)
+    }
+  }
+
+  function genIf (
+    el,
+    state,
+    altGen,
+    altEmpty
+  ) {
+    el.ifProcessed = true; // avoid recursion
+    return genIfConditions(el.ifConditions.slice(), state, altGen, altEmpty)
+  }
+
+  function genIfConditions (
+    conditions,
+    state,
+    altGen,
+    altEmpty
+  ) {
+    if (!conditions.length) {
+      return altEmpty || '_e()'
+    }
+
+    var condition = conditions.shift();
+    if (condition.exp) {
+      return ("(" + (condition.exp) + ")?" + (genTernaryExp(condition.block)) + ":" + (genIfConditions(conditions, state, altGen, altEmpty)))
+    } else {
+      return ("" + (genTernaryExp(condition.block)))
+    }
+
+    // v-if with v-once should generate code like (a)?_m(0):_m(1)
+    function genTernaryExp (el) {
+      return altGen
+        ? altGen(el, state)
+        : el.once
+          ? genOnce(el, state)
+          : genElement(el, state)
+    }
+  }
+
+  function genFor (
+    el,
+    state,
+    altGen,
+    altHelper
+  ) {
+    var exp = el.for;
+    var alias = el.alias;
+    var iterator1 = el.iterator1 ? ("," + (el.iterator1)) : '';
+    var iterator2 = el.iterator2 ? ("," + (el.iterator2)) : '';
+
+    if (state.maybeComponent(el) &&
+      el.tag !== 'slot' &&
+      el.tag !== 'template' &&
+      !el.key
+    ) {
+      state.warn(
+        "<" + (el.tag) + " v-for=\"" + alias + " in " + exp + "\">: component lists rendered with " +
+        "v-for should have explicit keys. " +
+        "See https://vuejs.org/guide/list.html#key for more info.",
+        el.rawAttrsMap['v-for'],
+        true /* tip */
+      );
+    }
+
+    el.forProcessed = true; // avoid recursion
+    return (altHelper || '_l') + "((" + exp + ")," +
+      "function(" + alias + iterator1 + iterator2 + "){" +
+        "return " + ((altGen || genElement)(el, state)) +
+      '})'
+  }
+
+  function genData$2 (el, state) {
+    var data = '{';
+
+    // directives first.
+    // directives may mutate the el's other properties before they are generated.
+    var dirs = genDirectives(el, state);
+    if (dirs) { data += dirs + ','; }
+
+    // key
+    if (el.key) {
+      data += "key:" + (el.key) + ",";
+    }
+    // ref
+    if (el.ref) {
+      data += "ref:" + (el.ref) + ",";
+    }
+    if (el.refInFor) {
+      data += "refInFor:true,";
+    }
+    // pre
+    if (el.pre) {
+      data += "pre:true,";
+    }
+    // record original tag name for components using "is" attribute
+    if (el.component) {
+      data += "tag:\"" + (el.tag) + "\",";
+    }
+    // module data generation functions
+    for (var i = 0; i < state.dataGenFns.length; i++) {
+      data += state.dataGenFns[i](el);
+    }
+    // attributes
+    if (el.attrs) {
+      data += "attrs:" + (genProps(el.attrs)) + ",";
+    }
+    // DOM props
+    if (el.props) {
+      data += "domProps:" + (genProps(el.props)) + ",";
+    }
+    // event handlers
+    if (el.events) {
+      data += (genHandlers(el.events, false)) + ",";
+    }
+    if (el.nativeEvents) {
+      data += (genHandlers(el.nativeEvents, true)) + ",";
+    }
+    // slot target
+    // only for non-scoped slots
+    if (el.slotTarget && !el.slotScope) {
+      data += "slot:" + (el.slotTarget) + ",";
+    }
+    // scoped slots
+    if (el.scopedSlots) {
+      data += (genScopedSlots(el, el.scopedSlots, state)) + ",";
+    }
+    // component v-model
+    if (el.model) {
+      data += "model:{value:" + (el.model.value) + ",callback:" + (el.model.callback) + ",expression:" + (el.model.expression) + "},";
+    }
+    // inline-template
+    if (el.inlineTemplate) {
+      var inlineTemplate = genInlineTemplate(el, state);
+      if (inlineTemplate) {
+        data += inlineTemplate + ",";
+      }
+    }
+    data = data.replace(/,$/, '') + '}';
+    // v-bind dynamic argument wrap
+    // v-bind with dynamic arguments must be applied using the same v-bind object
+    // merge helper so that class/style/mustUseProp attrs are handled correctly.
+    if (el.dynamicAttrs) {
+      data = "_b(" + data + ",\"" + (el.tag) + "\"," + (genProps(el.dynamicAttrs)) + ")";
+    }
+    // v-bind data wrap
+    if (el.wrapData) {
+      data = el.wrapData(data);
+    }
+    // v-on data wrap
+    if (el.wrapListeners) {
+      data = el.wrapListeners(data);
+    }
+    return data
+  }
+
+  function genDirectives (el, state) {
+    var dirs = el.directives;
+    if (!dirs) { return }
+    var res = 'directives:[';
+    var hasRuntime = false;
+    var i, l, dir, needRuntime;
+    for (i = 0, l = dirs.length; i < l; i++) {
+      dir = dirs[i];
+      needRuntime = true;
+      var gen = state.directives[dir.name];
+      if (gen) {
+        // compile-time directive that manipulates AST.
+        // returns true if it also needs a runtime counterpart.
+        needRuntime = !!gen(el, dir, state.warn);
+      }
+      if (needRuntime) {
+        hasRuntime = true;
+        res += "{name:\"" + (dir.name) + "\",rawName:\"" + (dir.rawName) + "\"" + (dir.value ? (",value:(" + (dir.value) + "),expression:" + (JSON.stringify(dir.value))) : '') + (dir.arg ? (",arg:" + (dir.isDynamicArg ? dir.arg : ("\"" + (dir.arg) + "\""))) : '') + (dir.modifiers ? (",modifiers:" + (JSON.stringify(dir.modifiers))) : '') + "},";
+      }
+    }
+    if (hasRuntime) {
+      return res.slice(0, -1) + ']'
+    }
+  }
+
+  function genInlineTemplate (el, state) {
+    var ast = el.children[0];
+    if (el.children.length !== 1 || ast.type !== 1) {
+      state.warn(
+        'Inline-template components must have exactly one child element.',
+        { start: el.start }
+      );
+    }
+    if (ast && ast.type === 1) {
+      var inlineRenderFns = generate(ast, state.options);
+      return ("inlineTemplate:{render:function(){" + (inlineRenderFns.render) + "},staticRenderFns:[" + (inlineRenderFns.staticRenderFns.map(function (code) { return ("function(){" + code + "}"); }).join(',')) + "]}")
+    }
+  }
+
+  function genScopedSlots (
+    el,
+    slots,
+    state
+  ) {
+    // by default scoped slots are considered "stable", this allows child
+    // components with only scoped slots to skip forced updates from parent.
+    // but in some cases we have to bail-out of this optimization
+    // for example if the slot contains dynamic names, has v-if or v-for on them...
+    var needsForceUpdate = el.for || Object.keys(slots).some(function (key) {
+      var slot = slots[key];
+      return (
+        slot.slotTargetDynamic ||
+        slot.if ||
+        slot.for ||
+        containsSlotChild(slot) // is passing down slot from parent which may be dynamic
+      )
+    });
+
+    // #9534: if a component with scoped slots is inside a conditional branch,
+    // it's possible for the same component to be reused but with different
+    // compiled slot content. To avoid that, we generate a unique key based on
+    // the generated code of all the slot contents.
+    var needsKey = !!el.if;
+
+    // OR when it is inside another scoped slot or v-for (the reactivity may be
+    // disconnected due to the intermediate scope variable)
+    // #9438, #9506
+    // TODO: this can be further optimized by properly analyzing in-scope bindings
+    // and skip force updating ones that do not actually use scope variables.
+    if (!needsForceUpdate) {
+      var parent = el.parent;
+      while (parent) {
+        if (
+          (parent.slotScope && parent.slotScope !== emptySlotScopeToken) ||
+          parent.for
+        ) {
+          needsForceUpdate = true;
+          break
+        }
+        if (parent.if) {
+          needsKey = true;
+        }
+        parent = parent.parent;
+      }
+    }
+
+    var generatedSlots = Object.keys(slots)
+      .map(function (key) { return genScopedSlot(slots[key], state); })
+      .join(',');
+
+    return ("scopedSlots:_u([" + generatedSlots + "]" + (needsForceUpdate ? ",null,true" : "") + (!needsForceUpdate && needsKey ? (",null,false," + (hash(generatedSlots))) : "") + ")")
+  }
+
+  function hash(str) {
+    var hash = 5381;
+    var i = str.length;
+    while(i) {
+      hash = (hash * 33) ^ str.charCodeAt(--i);
+    }
+    return hash >>> 0
+  }
+
+  function containsSlotChild (el) {
+    if (el.type === 1) {
+      if (el.tag === 'slot') {
+        return true
+      }
+      return el.children.some(containsSlotChild)
+    }
+    return false
+  }
+
+  function genScopedSlot (
+    el,
+    state
+  ) {
+    var isLegacySyntax = el.attrsMap['slot-scope'];
+    if (el.if && !el.ifProcessed && !isLegacySyntax) {
+      return genIf(el, state, genScopedSlot, "null")
+    }
+    if (el.for && !el.forProcessed) {
+      return genFor(el, state, genScopedSlot)
+    }
+    var slotScope = el.slotScope === emptySlotScopeToken
+      ? ""
+      : String(el.slotScope);
+    var fn = "function(" + slotScope + "){" +
+      "return " + (el.tag === 'template'
+        ? el.if && isLegacySyntax
+          ? ("(" + (el.if) + ")?" + (genChildren(el, state) || 'undefined') + ":undefined")
+          : genChildren(el, state) || 'undefined'
+        : genElement(el, state)) + "}";
+    // reverse proxy v-slot without scope on this.$slots
+    var reverseProxy = slotScope ? "" : ",proxy:true";
+    return ("{key:" + (el.slotTarget || "\"default\"") + ",fn:" + fn + reverseProxy + "}")
+  }
+
+  function genChildren (
+    el,
+    state,
+    checkSkip,
+    altGenElement,
+    altGenNode
+  ) {
+    var children = el.children;
+    if (children.length) {
+      var el$1 = children[0];
+      // optimize single v-for
+      if (children.length === 1 &&
+        el$1.for &&
+        el$1.tag !== 'template' &&
+        el$1.tag !== 'slot'
+      ) {
+        var normalizationType = checkSkip
+          ? state.maybeComponent(el$1) ? ",1" : ",0"
+          : "";
+        return ("" + ((altGenElement || genElement)(el$1, state)) + normalizationType)
+      }
+      var normalizationType$1 = checkSkip
+        ? getNormalizationType(children, state.maybeComponent)
+        : 0;
+      var gen = altGenNode || genNode;
+      return ("[" + (children.map(function (c) { return gen(c, state); }).join(',')) + "]" + (normalizationType$1 ? ("," + normalizationType$1) : ''))
+    }
+  }
+
+  // determine the normalization needed for the children array.
+  // 0: no normalization needed
+  // 1: simple normalization needed (possible 1-level deep nested array)
+  // 2: full normalization needed
+  function getNormalizationType (
+    children,
+    maybeComponent
+  ) {
+    var res = 0;
+    for (var i = 0; i < children.length; i++) {
+      var el = children[i];
+      if (el.type !== 1) {
+        continue
+      }
+      if (needsNormalization(el) ||
+          (el.ifConditions && el.ifConditions.some(function (c) { return needsNormalization(c.block); }))) {
+        res = 2;
+        break
+      }
+      if (maybeComponent(el) ||
+          (el.ifConditions && el.ifConditions.some(function (c) { return maybeComponent(c.block); }))) {
+        res = 1;
+      }
+    }
+    return res
+  }
+
+  function needsNormalization (el) {
+    return el.for !== undefined || el.tag === 'template' || el.tag === 'slot'
+  }
+
+  function genNode (node, state) {
+    if (node.type === 1) {
+      return genElement(node, state)
+    } else if (node.type === 3 && node.isComment) {
+      return genComment(node)
+    } else {
+      return genText(node)
+    }
+  }
+
+  function genText (text) {
+    return ("_v(" + (text.type === 2
+      ? text.expression // no need for () because already wrapped in _s()
+      : transformSpecialNewlines(JSON.stringify(text.text))) + ")")
+  }
+
+  function genComment (comment) {
+    return ("_e(" + (JSON.stringify(comment.text)) + ")")
+  }
+
+  function genSlot (el, state) {
+    var slotName = el.slotName || '"default"';
+    var children = genChildren(el, state);
+    var res = "_t(" + slotName + (children ? ("," + children) : '');
+    var attrs = el.attrs || el.dynamicAttrs
+      ? genProps((el.attrs || []).concat(el.dynamicAttrs || []).map(function (attr) { return ({
+          // slot props are camelized
+          name: camelize(attr.name),
+          value: attr.value,
+          dynamic: attr.dynamic
+        }); }))
+      : null;
+    var bind$$1 = el.attrsMap['v-bind'];
+    if ((attrs || bind$$1) && !children) {
+      res += ",null";
+    }
+    if (attrs) {
+      res += "," + attrs;
+    }
+    if (bind$$1) {
+      res += (attrs ? '' : ',null') + "," + bind$$1;
+    }
+    return res + ')'
+  }
+
+  // componentName is el.component, take it as argument to shun flow's pessimistic refinement
+  function genComponent (
+    componentName,
+    el,
+    state
+  ) {
+    var children = el.inlineTemplate ? null : genChildren(el, state, true);
+    return ("_c(" + componentName + "," + (genData$2(el, state)) + (children ? ("," + children) : '') + ")")
+  }
+
+  function genProps (props) {
+    var staticProps = "";
+    var dynamicProps = "";
+    for (var i = 0; i < props.length; i++) {
+      var prop = props[i];
+      var value = transformSpecialNewlines(prop.value);
+      if (prop.dynamic) {
+        dynamicProps += (prop.name) + "," + value + ",";
+      } else {
+        staticProps += "\"" + (prop.name) + "\":" + value + ",";
+      }
+    }
+    staticProps = "{" + (staticProps.slice(0, -1)) + "}";
+    if (dynamicProps) {
+      return ("_d(" + staticProps + ",[" + (dynamicProps.slice(0, -1)) + "])")
+    } else {
+      return staticProps
+    }
+  }
+
+  // #3895, #4268
+  function transformSpecialNewlines (text) {
+    return text
+      .replace(/\u2028/g, '\\u2028')
+      .replace(/\u2029/g, '\\u2029')
+  }
+
+  /*  */
+
+
+
+  // these keywords should not appear inside expressions, but operators like
+  // typeof, instanceof and in are allowed
+  var prohibitedKeywordRE = new RegExp('\\b' + (
+    'do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const,' +
+    'super,throw,while,yield,delete,export,import,return,switch,default,' +
+    'extends,finally,continue,debugger,function,arguments'
+  ).split(',').join('\\b|\\b') + '\\b');
+
+  // these unary operators should not be used as property/method names
+  var unaryOperatorsRE = new RegExp('\\b' + (
+    'delete,typeof,void'
+  ).split(',').join('\\s*\\([^\\)]*\\)|\\b') + '\\s*\\([^\\)]*\\)');
+
+  // strip strings in expressions
+  var stripStringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g;
+
+  // detect problematic expressions in a template
+  function detectErrors (ast, warn) {
+    if (ast) {
+      checkNode(ast, warn);
+    }
+  }
+
+  function checkNode (node, warn) {
+    if (node.type === 1) {
+      for (var name in node.attrsMap) {
+        if (dirRE.test(name)) {
+          var value = node.attrsMap[name];
+          if (value) {
+            var range = node.rawAttrsMap[name];
+            if (name === 'v-for') {
+              checkFor(node, ("v-for=\"" + value + "\""), warn, range);
+            } else if (name === 'v-slot' || name[0] === '#') {
+              checkFunctionParameterExpression(value, (name + "=\"" + value + "\""), warn, range);
+            } else if (onRE.test(name)) {
+              checkEvent(value, (name + "=\"" + value + "\""), warn, range);
+            } else {
+              checkExpression(value, (name + "=\"" + value + "\""), warn, range);
+            }
+          }
+        }
+      }
+      if (node.children) {
+        for (var i = 0; i < node.children.length; i++) {
+          checkNode(node.children[i], warn);
+        }
+      }
+    } else if (node.type === 2) {
+      checkExpression(node.expression, node.text, warn, node);
+    }
+  }
+
+  function checkEvent (exp, text, warn, range) {
+    var stripped = exp.replace(stripStringRE, '');
+    var keywordMatch = stripped.match(unaryOperatorsRE);
+    if (keywordMatch && stripped.charAt(keywordMatch.index - 1) !== '$') {
+      warn(
+        "avoid using JavaScript unary operator as property name: " +
+        "\"" + (keywordMatch[0]) + "\" in expression " + (text.trim()),
+        range
+      );
+    }
+    checkExpression(exp, text, warn, range);
+  }
+
+  function checkFor (node, text, warn, range) {
+    checkExpression(node.for || '', text, warn, range);
+    checkIdentifier(node.alias, 'v-for alias', text, warn, range);
+    checkIdentifier(node.iterator1, 'v-for iterator', text, warn, range);
+    checkIdentifier(node.iterator2, 'v-for iterator', text, warn, range);
+  }
+
+  function checkIdentifier (
+    ident,
+    type,
+    text,
+    warn,
+    range
+  ) {
+    if (typeof ident === 'string') {
+      try {
+        new Function(("var " + ident + "=_"));
+      } catch (e) {
+        warn(("invalid " + type + " \"" + ident + "\" in expression: " + (text.trim())), range);
+      }
+    }
+  }
+
+  function checkExpression (exp, text, warn, range) {
+    try {
+      new Function(("return " + exp));
+    } catch (e) {
+      var keywordMatch = exp.replace(stripStringRE, '').match(prohibitedKeywordRE);
+      if (keywordMatch) {
+        warn(
+          "avoid using JavaScript keyword as property name: " +
+          "\"" + (keywordMatch[0]) + "\"\n  Raw expression: " + (text.trim()),
+          range
+        );
+      } else {
+        warn(
+          "invalid expression: " + (e.message) + " in\n\n" +
+          "    " + exp + "\n\n" +
+          "  Raw expression: " + (text.trim()) + "\n",
+          range
+        );
+      }
+    }
+  }
+
+  function checkFunctionParameterExpression (exp, text, warn, range) {
+    try {
+      new Function(exp, '');
+    } catch (e) {
+      warn(
+        "invalid function parameter expression: " + (e.message) + " in\n\n" +
+        "    " + exp + "\n\n" +
+        "  Raw expression: " + (text.trim()) + "\n",
+        range
+      );
+    }
+  }
+
+  /*  */
+
+  var range = 2;
+
+  function generateCodeFrame (
+    source,
+    start,
+    end
+  ) {
+    if ( start === void 0 ) start = 0;
+    if ( end === void 0 ) end = source.length;
+
+    var lines = source.split(/\r?\n/);
+    var count = 0;
+    var res = [];
+    for (var i = 0; i < lines.length; i++) {
+      count += lines[i].length + 1;
+      if (count >= start) {
+        for (var j = i - range; j <= i + range || end > count; j++) {
+          if (j < 0 || j >= lines.length) { continue }
+          res.push(("" + (j + 1) + (repeat$1(" ", 3 - String(j + 1).length)) + "|  " + (lines[j])));
+          var lineLength = lines[j].length;
+          if (j === i) {
+            // push underline
+            var pad = start - (count - lineLength) + 1;
+            var length = end > count ? lineLength - pad : end - start;
+            res.push("   |  " + repeat$1(" ", pad) + repeat$1("^", length));
+          } else if (j > i) {
+            if (end > count) {
+              var length$1 = Math.min(end - count, lineLength);
+              res.push("   |  " + repeat$1("^", length$1));
+            }
+            count += lineLength + 1;
+          }
+        }
+        break
+      }
+    }
+    return res.join('\n')
+  }
+
+  function repeat$1 (str, n) {
+    var result = '';
+    if (n > 0) {
+      while (true) { // eslint-disable-line
+        if (n & 1) { result += str; }
+        n >>>= 1;
+        if (n <= 0) { break }
+        str += str;
+      }
+    }
+    return result
+  }
+
+  /*  */
+
+
+
+  function createFunction (code, errors) {
+    try {
+      return new Function(code)
+    } catch (err) {
+      errors.push({ err: err, code: code });
+      return noop
+    }
+  }
+
+  function createCompileToFunctionFn (compile) {
+    var cache = Object.create(null);
+
+    return function compileToFunctions (
+      template,
+      options,
+      vm
+    ) {
+      options = extend({}, options);
+      var warn$$1 = options.warn || warn;
+      delete options.warn;
+
+      /* istanbul ignore if */
+      {
+        // detect possible CSP restriction
+        try {
+          new Function('return 1');
+        } catch (e) {
+          if (e.toString().match(/unsafe-eval|CSP/)) {
+            warn$$1(
+              'It seems you are using the standalone build of Vue.js in an ' +
+              'environment with Content Security Policy that prohibits unsafe-eval. ' +
+              'The template compiler cannot work in this environment. Consider ' +
+              'relaxing the policy to allow unsafe-eval or pre-compiling your ' +
+              'templates into render functions.'
+            );
+          }
+        }
+      }
+
+      // check cache
+      var key = options.delimiters
+        ? String(options.delimiters) + template
+        : template;
+      if (cache[key]) {
+        return cache[key]
+      }
+
+      // compile
+      var compiled = compile(template, options);
+
+      // check compilation errors/tips
+      {
+        if (compiled.errors && compiled.errors.length) {
+          if (options.outputSourceRange) {
+            compiled.errors.forEach(function (e) {
+              warn$$1(
+                "Error compiling template:\n\n" + (e.msg) + "\n\n" +
+                generateCodeFrame(template, e.start, e.end),
+                vm
+              );
+            });
+          } else {
+            warn$$1(
+              "Error compiling template:\n\n" + template + "\n\n" +
+              compiled.errors.map(function (e) { return ("- " + e); }).join('\n') + '\n',
+              vm
+            );
+          }
+        }
+        if (compiled.tips && compiled.tips.length) {
+          if (options.outputSourceRange) {
+            compiled.tips.forEach(function (e) { return tip(e.msg, vm); });
+          } else {
+            compiled.tips.forEach(function (msg) { return tip(msg, vm); });
+          }
+        }
+      }
+
+      // turn code into functions
+      var res = {};
+      var fnGenErrors = [];
+      res.render = createFunction(compiled.render, fnGenErrors);
+      res.staticRenderFns = compiled.staticRenderFns.map(function (code) {
+        return createFunction(code, fnGenErrors)
+      });
+
+      // check function generation errors.
+      // this should only happen if there is a bug in the compiler itself.
+      // mostly for codegen development use
+      /* istanbul ignore if */
+      {
+        if ((!compiled.errors || !compiled.errors.length) && fnGenErrors.length) {
+          warn$$1(
+            "Failed to generate render function:\n\n" +
+            fnGenErrors.map(function (ref) {
+              var err = ref.err;
+              var code = ref.code;
+
+              return ((err.toString()) + " in\n\n" + code + "\n");
+          }).join('\n'),
+            vm
+          );
+        }
+      }
+
+      return (cache[key] = res)
+    }
+  }
+
+  /*  */
+
+  function createCompilerCreator (baseCompile) {
+    return function createCompiler (baseOptions) {
+      function compile (
+        template,
+        options
+      ) {
+        var finalOptions = Object.create(baseOptions);
+        var errors = [];
+        var tips = [];
+
+        var warn = function (msg, range, tip) {
+          (tip ? tips : errors).push(msg);
+        };
+
+        if (options) {
+          if (options.outputSourceRange) {
+            // $flow-disable-line
+            var leadingSpaceLength = template.match(/^\s*/)[0].length;
+
+            warn = function (msg, range, tip) {
+              var data = { msg: msg };
+              if (range) {
+                if (range.start != null) {
+                  data.start = range.start + leadingSpaceLength;
+                }
+                if (range.end != null) {
+                  data.end = range.end + leadingSpaceLength;
+                }
+              }
+              (tip ? tips : errors).push(data);
+            };
+          }
+          // merge custom modules
+          if (options.modules) {
+            finalOptions.modules =
+              (baseOptions.modules || []).concat(options.modules);
+          }
+          // merge custom directives
+          if (options.directives) {
+            finalOptions.directives = extend(
+              Object.create(baseOptions.directives || null),
+              options.directives
+            );
+          }
+          // copy other options
+          for (var key in options) {
+            if (key !== 'modules' && key !== 'directives') {
+              finalOptions[key] = options[key];
+            }
+          }
+        }
+
+        finalOptions.warn = warn;
+
+        var compiled = baseCompile(template.trim(), finalOptions);
+        {
+          detectErrors(compiled.ast, warn);
+        }
+        compiled.errors = errors;
+        compiled.tips = tips;
+        return compiled
+      }
+
+      return {
+        compile: compile,
+        compileToFunctions: createCompileToFunctionFn(compile)
+      }
+    }
+  }
+
+  /*  */
+
+  // `createCompilerCreator` allows creating compilers that use alternative
+  // parser/optimizer/codegen, e.g the SSR optimizing compiler.
+  // Here we just export a default compiler using the default parts.
+  var createCompiler = createCompilerCreator(function baseCompile (
+    template,
+    options
+  ) {
+    var ast = parse(template.trim(), options);
+    if (options.optimize !== false) {
+      optimize(ast, options);
+    }
+    var code = generate(ast, options);
+    return {
+      ast: ast,
+      render: code.render,
+      staticRenderFns: code.staticRenderFns
+    }
+  });
+
+  /*  */
+
+  var ref$1 = createCompiler(baseOptions);
+  var compile = ref$1.compile;
+  var compileToFunctions = ref$1.compileToFunctions;
+
+  /*  */
+
+  // check whether current browser encodes a char inside attribute values
+  var div;
+  function getShouldDecode (href) {
+    div = div || document.createElement('div');
+    div.innerHTML = href ? "<a href=\"\n\"/>" : "<div a=\"\n\"/>";
+    return div.innerHTML.indexOf('&#10;') > 0
+  }
+
+  // #3663: IE encodes newlines inside attribute values while other browsers don't
+  var shouldDecodeNewlines = inBrowser ? getShouldDecode(false) : false;
+  // #6828: chrome encodes content in a[href]
+  var shouldDecodeNewlinesForHref = inBrowser ? getShouldDecode(true) : false;
+
+  /*  */
+
+  var idToTemplate = cached(function (id) {
+    var el = query(id);
+    return el && el.innerHTML
+  });
+
+  var mount = Vue.prototype.$mount;
+  Vue.prototype.$mount = function (
+    el,
+    hydrating
+  ) {
+    el = el && query(el);
+
+    /* istanbul ignore if */
+    if (el === document.body || el === document.documentElement) {
+      warn(
+        "Do not mount Vue to <html> or <body> - mount to normal elements instead."
+      );
+      return this
+    }
+
+    var options = this.$options;
+    // resolve template/el and convert to render function
+    if (!options.render) {
+      var template = options.template;
+      if (template) {
+        if (typeof template === 'string') {
+          if (template.charAt(0) === '#') {
+            template = idToTemplate(template);
+            /* istanbul ignore if */
+            if (!template) {
+              warn(
+                ("Template element not found or is empty: " + (options.template)),
+                this
+              );
+            }
+          }
+        } else if (template.nodeType) {
+          template = template.innerHTML;
+        } else {
+          {
+            warn('invalid template option:' + template, this);
+          }
+          return this
+        }
+      } else if (el) {
+        template = getOuterHTML(el);
+      }
+      if (template) {
+        /* istanbul ignore if */
+        if (config.performance && mark) {
+          mark('compile');
+        }
+
+        var ref = compileToFunctions(template, {
+          outputSourceRange: "development" !== 'production',
+          shouldDecodeNewlines: shouldDecodeNewlines,
+          shouldDecodeNewlinesForHref: shouldDecodeNewlinesForHref,
+          delimiters: options.delimiters,
+          comments: options.comments
+        }, this);
+        var render = ref.render;
+        var staticRenderFns = ref.staticRenderFns;
+        options.render = render;
+        options.staticRenderFns = staticRenderFns;
+
+        /* istanbul ignore if */
+        if (config.performance && mark) {
+          mark('compile end');
+          measure(("vue " + (this._name) + " compile"), 'compile', 'compile end');
+        }
+      }
+    }
+    return mount.call(this, el, hydrating)
+  };
+
+  /**
+   * Get outerHTML of elements, taking care
+   * of SVG elements in IE as well.
+   */
+  function getOuterHTML (el) {
+    if (el.outerHTML) {
+      return el.outerHTML
+    } else {
+      var container = document.createElement('div');
+      container.appendChild(el.cloneNode(true));
+      return container.innerHTML
+    }
+  }
+
+  Vue.compile = compileToFunctions;
+
+  return Vue;
+
+}));
diff --git a/assets/web/welcome.html b/assets/web/welcome.html
index 94643f98..374f3b13 100644
--- a/assets/web/welcome.html
+++ b/assets/web/welcome.html
@@ -1,45 +1,57 @@
 <main role="main" id="app" style="max-width: 600px; margin: 0 auto">
-  <div class="container-parent">
-    <div class="container py-3">
-      <h1 class="mb-0">Welcome to Sunshine!</h1>
-      <p class="mb-0 align-self-start">
-        Before Getting Started, write down below these credentials
-      </p>
-    </div>
-  </div>
+  <header>
+    <h1 class="mb-0">Welcome to Sunshine!</h1>
+    <p class="mb-0 align-self-start">
+      Before Getting Started, write down below these credentials
+    </p>
+  </header>
   <div class="alert alert-warning">
     These Credentials down below are needed to access the rest of the
     application.<br />
     Keep them safe, since <b>you will never see them again!</b>
   </div>
-  <form @submit.prevent="save" class="card p-4" style="width: 100%">
+  <form @submit.prevent="save">
     <div class="mb-2">
-      <label for="" class="form-label">Username: </label>
+      <label for="usernameInput" class="form-label">Username:</label>
       <input
         type="text"
         class="form-control"
+        id="usernameInput"
+        autocomplete="username"
         v-model="passwordData.newUsername"
       />
     </div>
     <div class="mb-2">
-      <label for="" class="form-label">Password: </label>
+      <label for="passwordInput" class="form-label">Password:</label>
       <input
         type="password"
         class="form-control"
+        id="passwordInput"
+        autocomplete="new-password"
         v-model="passwordData.newPassword"
         required
       />
     </div>
     <div class="mb-2">
-      <label for="" class="form-label">Password: </label>
+      <label for="confirmPasswordInput" class="form-label"
+        >Password (confirm):</label
+      >
       <input
         type="password"
         class="form-control"
+        id="confirmPasswordInput"
+        autocomplete="new-password"
         v-model="passwordData.confirmNewPassword"
         required
       />
     </div>
-    <button class="mb-2 btn btn-primary" style="margin: 1em auto">Login</button>
+    <button
+      type="submit"
+      class="btn btn-primary w-100 mb-2"
+      v-bind:disabled="loading"
+    >
+      Login
+    </button>
     <div class="alert alert-danger" v-if="error"><b>Error: </b>{{error}}</div>
     <div class="alert alert-success" v-if="success">
       <b>Success! </b>This page will reload soon, your browser will ask you for
@@ -55,6 +67,7 @@
       return {
         error: null,
         success: false,
+        loading: false,
         passwordData: {
           newUsername: "sunshine",
           newPassword: "",
@@ -65,10 +78,12 @@
     methods: {
       save() {
         this.error = null;
+        this.loading = true;
         fetch("/api/password", {
           method: "POST",
           body: JSON.stringify(this.passwordData),
         }).then((r) => {
+          this.loading = false;
           if (r.status == 200) {
             r.json().then((rj) => {
               if (rj.status.toString() === "true") {
diff --git a/FindFFmpeg.cmake b/cmake/FindFFMPEG.cmake
similarity index 100%
rename from FindFFmpeg.cmake
rename to cmake/FindFFMPEG.cmake
diff --git a/cmake/FindLIBDRM.cmake b/cmake/FindLIBDRM.cmake
new file mode 100644
index 00000000..fd0548c1
--- /dev/null
+++ b/cmake/FindLIBDRM.cmake
@@ -0,0 +1,21 @@
+# - Try to find Libdrm
+# Once done this will define
+#
+#  LIBDRM_FOUND - system has Libdrm
+#  LIBDRM_INCLUDE_DIRS - the Libdrm include directory
+#  LIBDRM_LIBRARIES - the libraries needed to use Libdrm
+#  LIBDRM_DEFINITIONS - Compiler switches required for using Libdrm
+
+# Use pkg-config to get the directories and then use these values
+# in the find_path() and find_library() calls
+find_package(PkgConfig)
+pkg_check_modules(PC_LIBDRM libdrm)
+
+set(LIBDRM_DEFINITIONS ${PC_LIBDRM_CFLAGS})
+
+find_path(LIBDRM_INCLUDE_DIRS drm.h PATHS ${PC_LIBDRM_INCLUDEDIR} ${PC_LIBDRM_INCLUDE_DIRS} PATH_SUFFIXES libdrm)
+find_library(LIBDRM_LIBRARIES NAMES libdrm.so PATHS ${PC_LIBDRM_LIBDIR} ${PC_LIBDRM_LIBRARY_DIRS})
+mark_as_advanced(LIBDRM_INCLUDE_DIRS LIBDRM_LIBRARIES)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(LIBDRM REQUIRED_VARS LIBDRM_LIBRARIES LIBDRM_INCLUDE_DIRS)
\ No newline at end of file
diff --git a/gen-deb.in b/gen-deb.in
index 09ec1025..be81bcff 100755
--- a/gen-deb.in
+++ b/gen-deb.in
@@ -37,8 +37,8 @@ Package: sunshine
 Architecture: amd64
 Maintainer: @loki
 Priority: optional
-Version: 0.9.1
-Depends: libssl1.1, libavdevice58, libboost-thread1.67.0 | libboost-thread1.71.0, libboost-filesystem1.67.0 | libboost-filesystem1.71.0, libboost-log1.67.0 | libboost-log1.71.0, libpulse0, libopus0, libxcb-shm0, libxcb-xfixes0, libxtst6, libevdev2
+Version: 0.10.2
+Depends: libssl1.1, libavdevice58, libboost-thread1.67.0 | libboost-thread1.71.0, libboost-filesystem1.67.0 | libboost-filesystem1.71.0, libboost-log1.67.0 | libboost-log1.71.0, libpulse0, libopus0, libxcb-shm0, libxcb-xfixes0, libxtst6, libevdev2, libdrm2
 Description: Gamestream host for Moonlight
 EOF
 
@@ -88,6 +88,13 @@ if [ -f /etc/sunshine/sunshine.conf ]; then
 	echo "chmod 666 /etc/sunshine/sunshine.conf"
 	chmod 666 /etc/sunshine/sunshine.conf
 fi
+
+# Ensure Sunshine can grab images from KMS
+path_to_setcap=$(which setcap)
+if [ -x "$path_to_setcap" ] ; then
+  echo "$path_to_setcap cap_sys_admin+ep /usr/bin/sunshine"
+	$path_to_setcap cap_sys_admin+ep /usr/bin/sunshine
+fi
 EOF
 
 cat << 'EOF' > $RULES/85-sunshine-rules.rules
diff --git a/sunshine/audio.cpp b/sunshine/audio.cpp
index cb4fac28..4279eb4c 100644
--- a/sunshine/audio.cpp
+++ b/sunshine/audio.cpp
@@ -130,7 +130,7 @@ void capture(safe::mail_t mail, config_t config, void *channel_data) {
 
   auto &control = ref->control;
   if(!control) {
-    BOOST_LOG(error) << "Couldn't create audio control"sv;
+    shutdown_event->view();
 
     return;
   }
@@ -223,21 +223,29 @@ int map_stream(int channels, bool quality) {
 }
 
 int start_audio_control(audio_ctx_t &ctx) {
+  auto fg = util::fail_guard([]() {
+    BOOST_LOG(warning) << "There will be no audio"sv;
+  });
+
   ctx.sink_flag = std::make_unique<std::atomic_bool>(false);
 
-  if(!(ctx.control = platf::audio_control())) {
-    return -1;
-  }
-
-  auto sink = ctx.control->sink_info();
-  if(!sink) {
-    return -1;
-  }
-
   // The default sink has not been replaced yet.
   ctx.restore_sink = false;
 
+  if(!(ctx.control = platf::audio_control())) {
+    return 0;
+  }
+
+  auto sink = ctx.control->sink_info();
+  if(!sink) {
+    // Let the calling code know it failed
+    ctx.control.reset();
+    return 0;
+  }
+
   ctx.sink = std::move(*sink);
+
+  fg.disable();
   return 0;
 }
 
diff --git a/sunshine/confighttp.cpp b/sunshine/confighttp.cpp
index 64d92722..799ac677 100644
--- a/sunshine/confighttp.cpp
+++ b/sunshine/confighttp.cpp
@@ -221,6 +221,27 @@ void getTroubleshootingPage(resp_https_t response, req_https_t request) {
   response->write(header + content);
 }
 
+void getBootstrapCss(resp_https_t response, req_https_t request) {
+  print_req(request);
+
+  std::string content = read_file(WEB_DIR "third_party/bootstrap.min.css");
+  response->write(content);
+}
+
+void getBootstrapJs(resp_https_t response, req_https_t request) {
+  print_req(request);
+
+  std::string content = read_file(WEB_DIR "third_party/bootstrap.bundle.min.js");
+  response->write(content);
+}
+
+void getVueJs(resp_https_t response, req_https_t request) {
+  print_req(request);
+
+  std::string content = read_file(WEB_DIR "third_party/vue.js");
+  response->write(content);
+}
+
 void getApps(resp_https_t response, req_https_t request) {
   if(!authenticate(response, request)) return;
 
@@ -550,27 +571,30 @@ void start() {
   ctx->use_certificate_chain_file(config::nvhttp.cert);
   ctx->use_private_key_file(config::nvhttp.pkey, boost::asio::ssl::context::pem);
   https_server_t server { ctx, 0 };
-  server.default_resource                           = not_found;
-  server.resource["^/$"]["GET"]                     = getIndexPage;
-  server.resource["^/pin$"]["GET"]                  = getPinPage;
-  server.resource["^/apps$"]["GET"]                 = getAppsPage;
-  server.resource["^/clients$"]["GET"]              = getClientsPage;
-  server.resource["^/config$"]["GET"]               = getConfigPage;
-  server.resource["^/password$"]["GET"]             = getPasswordPage;
-  server.resource["^/welcome$"]["GET"]              = getWelcomePage;
+  server.default_resource                                          = not_found;
+  server.resource["^/$"]["GET"]                                    = getIndexPage;
+  server.resource["^/pin$"]["GET"]                                 = getPinPage;
+  server.resource["^/apps$"]["GET"]                                = getAppsPage;
+  server.resource["^/clients$"]["GET"]                             = getClientsPage;
+  server.resource["^/config$"]["GET"]                              = getConfigPage;
+  server.resource["^/password$"]["GET"]                            = getPasswordPage;
+  server.resource["^/welcome$"]["GET"]                             = getWelcomePage;
   server.resource["^/troubleshooting$"]["GET"]      = getTroubleshootingPage;
-  server.resource["^/api/pin"]["POST"]              = savePin;
-  server.resource["^/api/apps$"]["GET"]             = getApps;
-  server.resource["^/api/apps$"]["POST"]            = saveApp;
-  server.resource["^/api/config$"]["GET"]           = getConfig;
-  server.resource["^/api/config$"]["POST"]          = saveConfig;
-  server.resource["^/api/password$"]["POST"]        = savePassword;
-  server.resource["^/api/apps/([0-9]+)$"]["DELETE"] = deleteApp;
+  server.resource["^/api/pin"]["POST"]                             = savePin;
+  server.resource["^/api/apps$"]["GET"]                            = getApps;
+  server.resource["^/api/apps$"]["POST"]                           = saveApp;
+  server.resource["^/api/config$"]["GET"]                          = getConfig;
+  server.resource["^/api/config$"]["POST"]                         = saveConfig;
+  server.resource["^/api/password$"]["POST"]                       = savePassword;
+  server.resource["^/api/apps/([0-9]+)$"]["DELETE"]                = deleteApp;
   server.resource["^/api/clients/unpair$"]["POST"]  = unpairAll;
   server.resource["^/api/apps/close"]["POST"]       = closeApp;
-  server.config.reuse_address                       = true;
-  server.config.address                             = "0.0.0.0"s;
-  server.config.port                                = port_https;
+  server.resource["^/third_party/bootstrap.min.css$"]["GET"]       = getBootstrapCss;
+  server.resource["^/third_party/bootstrap.bundle.min.js$"]["GET"] = getBootstrapJs;
+  server.resource["^/third_party/vue.js$"]["GET"]                  = getVueJs;
+  server.config.reuse_address                                      = true;
+  server.config.address                                            = "0.0.0.0"s;
+  server.config.port                                               = port_https;
 
   try {
     server.bind();
diff --git a/sunshine/platform/common.h b/sunshine/platform/common.h
index 1f6b8498..4fe87b7c 100644
--- a/sunshine/platform/common.h
+++ b/sunshine/platform/common.h
@@ -147,10 +147,6 @@ public:
   std::int32_t pixel_pitch {};
   std::int32_t row_pitch {};
 
-  img_t()              = default;
-  img_t(const img_t &) = delete;
-  img_t(img_t &&)      = delete;
-
   virtual ~img_t() = default;
 };
 
diff --git a/sunshine/platform/linux/graphics.cpp b/sunshine/platform/linux/graphics.cpp
new file mode 100644
index 00000000..d006d33b
--- /dev/null
+++ b/sunshine/platform/linux/graphics.cpp
@@ -0,0 +1,707 @@
+#include "graphics.h"
+#include "sunshine/video.h"
+
+#include <fcntl.h>
+
+// I want to have as little build dependencies as possible
+// There aren't that many DRM_FORMAT I need to use, so define them here
+//
+// They aren't likely to change any time soon.
+#define fourcc_code(a, b, c, d) ((std::uint32_t)(a) | ((std::uint32_t)(b) << 8) | \
+                                 ((std::uint32_t)(c) << 16) | ((std::uint32_t)(d) << 24))
+#define DRM_FORMAT_R8 fourcc_code('R', '8', ' ', ' ')       /* [7:0] R */
+#define DRM_FORMAT_GR88 fourcc_code('G', 'R', '8', '8')     /* [15:0] G:R 8:8 little endian */
+#define DRM_FORMAT_ARGB8888 fourcc_code('A', 'R', '2', '4') /* [31:0] A:R:G:B 8:8:8:8 little endian */
+#define DRM_FORMAT_XRGB8888 fourcc_code('X', 'R', '2', '4') /* [31:0] x:R:G:B 8:8:8:8 little endian */
+#define DRM_FORMAT_XBGR8888 fourcc_code('X', 'B', '2', '4') /* [31:0] x:B:G:R 8:8:8:8 little endian */
+
+
+#define SUNSHINE_SHADERS_DIR SUNSHINE_ASSETS_DIR "/shaders/opengl"
+
+using namespace std::literals;
+namespace gl {
+GladGLContext ctx;
+
+void drain_errors(const std::string_view &prefix) {
+  GLenum err;
+  while((err = ctx.GetError()) != GL_NO_ERROR) {
+    BOOST_LOG(error) << "GL: "sv << prefix << ": ["sv << util::hex(err).to_string_view() << ']';
+  }
+}
+
+tex_t::~tex_t() {
+  if(!size() == 0) {
+    ctx.DeleteTextures(size(), begin());
+  }
+}
+
+tex_t tex_t::make(std::size_t count) {
+  tex_t textures { count };
+
+  ctx.GenTextures(textures.size(), textures.begin());
+
+  float color[] = { 0.0f, 0.0f, 0.0f, 1.0f };
+
+  for(auto tex : textures) {
+    gl::ctx.BindTexture(GL_TEXTURE_2D, tex);
+    gl::ctx.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); // x
+    gl::ctx.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); // y
+    gl::ctx.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    gl::ctx.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    gl::ctx.TexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, color);
+  }
+
+  return textures;
+}
+
+frame_buf_t::~frame_buf_t() {
+  if(begin()) {
+    ctx.DeleteFramebuffers(size(), begin());
+  }
+}
+
+frame_buf_t frame_buf_t::make(std::size_t count) {
+  frame_buf_t frame_buf { count };
+
+  ctx.GenFramebuffers(frame_buf.size(), frame_buf.begin());
+
+  return frame_buf;
+}
+
+std::string shader_t::err_str() {
+  int length;
+  ctx.GetShaderiv(handle(), GL_INFO_LOG_LENGTH, &length);
+
+  std::string string;
+  string.resize(length);
+
+  ctx.GetShaderInfoLog(handle(), length, &length, string.data());
+
+  string.resize(length - 1);
+
+  return string;
+}
+
+util::Either<shader_t, std::string> shader_t::compile(const std::string_view &source, GLenum type) {
+  shader_t shader;
+
+  auto data    = source.data();
+  GLint length = source.length();
+
+  shader._shader.el = ctx.CreateShader(type);
+  ctx.ShaderSource(shader.handle(), 1, &data, &length);
+  ctx.CompileShader(shader.handle());
+
+  int status = 0;
+  ctx.GetShaderiv(shader.handle(), GL_COMPILE_STATUS, &status);
+
+  if(!status) {
+    return shader.err_str();
+  }
+
+  return shader;
+}
+
+GLuint shader_t::handle() const {
+  return _shader.el;
+}
+
+buffer_t buffer_t::make(util::buffer_t<GLint> &&offsets, const char *block, const std::string_view &data) {
+  buffer_t buffer;
+  buffer._block   = block;
+  buffer._size    = data.size();
+  buffer._offsets = std::move(offsets);
+
+  ctx.GenBuffers(1, &buffer._buffer.el);
+  ctx.BindBuffer(GL_UNIFORM_BUFFER, buffer.handle());
+  ctx.BufferData(GL_UNIFORM_BUFFER, data.size(), (const std::uint8_t *)data.data(), GL_DYNAMIC_DRAW);
+
+  return buffer;
+}
+
+GLuint buffer_t::handle() const {
+  return _buffer.el;
+}
+
+const char *buffer_t::block() const {
+  return _block;
+}
+
+void buffer_t::update(const std::string_view &view, std::size_t offset) {
+  ctx.BindBuffer(GL_UNIFORM_BUFFER, handle());
+  ctx.BufferSubData(GL_UNIFORM_BUFFER, offset, view.size(), (const void *)view.data());
+}
+
+void buffer_t::update(std::string_view *members, std::size_t count, std::size_t offset) {
+  util::buffer_t<std::uint8_t> buffer { _size };
+
+  for(int x = 0; x < count; ++x) {
+    auto val = members[x];
+
+    std::copy_n((const std::uint8_t *)val.data(), val.size(), &buffer[_offsets[x]]);
+  }
+
+  update(util::view(buffer.begin(), buffer.end()), offset);
+}
+
+std::string program_t::err_str() {
+  int length;
+  ctx.GetProgramiv(handle(), GL_INFO_LOG_LENGTH, &length);
+
+  std::string string;
+  string.resize(length);
+
+  ctx.GetShaderInfoLog(handle(), length, &length, string.data());
+
+  string.resize(length - 1);
+
+  return string;
+}
+
+util::Either<program_t, std::string> program_t::link(const shader_t &vert, const shader_t &frag) {
+  program_t program;
+
+  program._program.el = ctx.CreateProgram();
+
+  ctx.AttachShader(program.handle(), vert.handle());
+  ctx.AttachShader(program.handle(), frag.handle());
+
+  // p_handle stores a copy of the program handle, since program will be moved before
+  // the fail guard funcion is called.
+  auto fg = util::fail_guard([p_handle = program.handle(), &vert, &frag]() {
+    ctx.DetachShader(p_handle, vert.handle());
+    ctx.DetachShader(p_handle, frag.handle());
+  });
+
+  ctx.LinkProgram(program.handle());
+
+  int status = 0;
+  ctx.GetProgramiv(program.handle(), GL_LINK_STATUS, &status);
+
+  if(!status) {
+    return program.err_str();
+  }
+
+  return program;
+}
+
+void program_t::bind(const buffer_t &buffer) {
+  ctx.UseProgram(handle());
+  auto i = ctx.GetUniformBlockIndex(handle(), buffer.block());
+
+  ctx.BindBufferBase(GL_UNIFORM_BUFFER, i, buffer.handle());
+}
+
+std::optional<buffer_t> program_t::uniform(const char *block, std::pair<const char *, std::string_view> *members, std::size_t count) {
+  auto i = ctx.GetUniformBlockIndex(handle(), block);
+  if(i == GL_INVALID_INDEX) {
+    BOOST_LOG(error) << "Couldn't find index of ["sv << block << ']';
+    return std::nullopt;
+  }
+
+  int size;
+  ctx.GetActiveUniformBlockiv(handle(), i, GL_UNIFORM_BLOCK_DATA_SIZE, &size);
+
+  bool error_flag = false;
+
+  util::buffer_t<GLint> offsets { count };
+  auto indices = (std::uint32_t *)alloca(count * sizeof(std::uint32_t));
+  auto names   = (const char **)alloca(count * sizeof(const char *));
+  auto names_p = names;
+
+  std::for_each_n(members, count, [names_p](auto &member) mutable {
+    *names_p++ = std::get<0>(member);
+  });
+
+  std::fill_n(indices, count, GL_INVALID_INDEX);
+  ctx.GetUniformIndices(handle(), count, names, indices);
+
+  for(int x = 0; x < count; ++x) {
+    if(indices[x] == GL_INVALID_INDEX) {
+      error_flag = true;
+
+      BOOST_LOG(error) << "Couldn't find ["sv << block << '.' << members[x].first << ']';
+    }
+  }
+
+  if(error_flag) {
+    return std::nullopt;
+  }
+
+  ctx.GetActiveUniformsiv(handle(), count, indices, GL_UNIFORM_OFFSET, offsets.begin());
+  util::buffer_t<std::uint8_t> buffer { (std::size_t)size };
+
+  for(int x = 0; x < count; ++x) {
+    auto val = std::get<1>(members[x]);
+
+    std::copy_n((const std::uint8_t *)val.data(), val.size(), &buffer[offsets[x]]);
+  }
+
+  return buffer_t::make(std::move(offsets), block, std::string_view { (char *)buffer.begin(), buffer.size() });
+}
+
+GLuint program_t::handle() const {
+  return _program.el;
+}
+
+} // namespace gl
+
+namespace gbm {
+device_destroy_fn device_destroy;
+create_device_fn create_device;
+
+int init() {
+  static void *handle { nullptr };
+  static bool funcs_loaded = false;
+
+  if(funcs_loaded) return 0;
+
+  if(!handle) {
+    handle = dyn::handle({ "libgbm.so.1", "libgbm.so" });
+    if(!handle) {
+      return -1;
+    }
+  }
+
+  std::vector<std::tuple<GLADapiproc *, const char *>> funcs {
+    { (GLADapiproc *)&device_destroy, "gbm_device_destroy" },
+    { (GLADapiproc *)&create_device, "gbm_create_device" },
+  };
+
+  if(dyn::load(handle, funcs)) {
+    return -1;
+  }
+
+  funcs_loaded = true;
+  return 0;
+}
+} // namespace gbm
+
+namespace egl {
+constexpr auto EGL_LINUX_DMA_BUF_EXT         = 0x3270;
+constexpr auto EGL_LINUX_DRM_FOURCC_EXT      = 0x3271;
+constexpr auto EGL_DMA_BUF_PLANE0_FD_EXT     = 0x3272;
+constexpr auto EGL_DMA_BUF_PLANE0_OFFSET_EXT = 0x3273;
+constexpr auto EGL_DMA_BUF_PLANE0_PITCH_EXT  = 0x3274;
+
+bool fail() {
+  return eglGetError() != EGL_SUCCESS;
+}
+
+display_t make_display(gbm::gbm_t::pointer gbm) {
+  constexpr auto EGL_PLATFORM_GBM_MESA = 0x31D7;
+
+  display_t display = eglGetPlatformDisplay(EGL_PLATFORM_GBM_MESA, gbm, nullptr);
+
+  if(fail()) {
+    BOOST_LOG(error) << "Couldn't open EGL display: ["sv << util::hex(eglGetError()).to_string_view() << ']';
+    return nullptr;
+  }
+
+  int major, minor;
+  if(!eglInitialize(display.get(), &major, &minor)) {
+    BOOST_LOG(error) << "Couldn't initialize EGL display: ["sv << util::hex(eglGetError()).to_string_view() << ']';
+    return nullptr;
+  }
+
+  const char *extension_st = eglQueryString(display.get(), EGL_EXTENSIONS);
+  const char *version      = eglQueryString(display.get(), EGL_VERSION);
+  const char *vendor       = eglQueryString(display.get(), EGL_VENDOR);
+  const char *apis         = eglQueryString(display.get(), EGL_CLIENT_APIS);
+
+  BOOST_LOG(debug) << "EGL: ["sv << vendor << "]: version ["sv << version << ']';
+  BOOST_LOG(debug) << "API's supported: ["sv << apis << ']';
+
+  const char *extensions[] {
+    "EGL_KHR_create_context",
+    "EGL_KHR_surfaceless_context",
+    "EGL_EXT_image_dma_buf_import",
+    "EGL_KHR_image_pixmap"
+  };
+
+  for(auto ext : extensions) {
+    if(!std::strstr(extension_st, ext)) {
+      BOOST_LOG(error) << "Missing extension: ["sv << ext << ']';
+      return nullptr;
+    }
+  }
+
+  return display;
+}
+
+std::optional<ctx_t> make_ctx(display_t::pointer display) {
+  constexpr int conf_attr[] {
+    EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT, EGL_NONE
+  };
+
+  int count;
+  EGLConfig conf;
+  if(!eglChooseConfig(display, conf_attr, &conf, 1, &count)) {
+    BOOST_LOG(error) << "Couldn't set config attributes: ["sv << util::hex(eglGetError()).to_string_view() << ']';
+    return std::nullopt;
+  }
+
+  if(!eglBindAPI(EGL_OPENGL_API)) {
+    BOOST_LOG(error) << "Couldn't bind API: ["sv << util::hex(eglGetError()).to_string_view() << ']';
+    return std::nullopt;
+  }
+
+  constexpr int attr[] {
+    EGL_CONTEXT_CLIENT_VERSION, 3, EGL_NONE
+  };
+
+  ctx_t ctx { display, eglCreateContext(display, conf, EGL_NO_CONTEXT, attr) };
+  if(fail()) {
+    BOOST_LOG(error) << "Couldn't create EGL context: ["sv << util::hex(eglGetError()).to_string_view() << ']';
+    return std::nullopt;
+  }
+
+  TUPLE_EL_REF(ctx_p, 1, ctx.el);
+  if(!eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, ctx_p)) {
+    BOOST_LOG(error) << "Couldn't make current display"sv;
+    return std::nullopt;
+  }
+
+  if(!gladLoadGLContext(&gl::ctx, eglGetProcAddress)) {
+    BOOST_LOG(error) << "Couldn't load OpenGL library"sv;
+    return std::nullopt;
+  }
+
+  BOOST_LOG(debug) << "GL: vendor: "sv << gl::ctx.GetString(GL_VENDOR);
+  BOOST_LOG(debug) << "GL: renderer: "sv << gl::ctx.GetString(GL_RENDERER);
+  BOOST_LOG(debug) << "GL: version: "sv << gl::ctx.GetString(GL_VERSION);
+  BOOST_LOG(debug) << "GL: shader: "sv << gl::ctx.GetString(GL_SHADING_LANGUAGE_VERSION);
+
+  gl::ctx.PixelStorei(GL_UNPACK_ALIGNMENT, 1);
+
+  return ctx;
+}
+std::optional<rgb_t> import_source(display_t::pointer egl_display, const surface_descriptor_t &xrgb) {
+  EGLAttrib img_attr_planes[13] {
+    EGL_LINUX_DRM_FOURCC_EXT, DRM_FORMAT_XRGB8888,
+    EGL_WIDTH, xrgb.width,
+    EGL_HEIGHT, xrgb.height,
+    EGL_DMA_BUF_PLANE0_FD_EXT, xrgb.fd,
+    EGL_DMA_BUF_PLANE0_OFFSET_EXT, xrgb.offset,
+    EGL_DMA_BUF_PLANE0_PITCH_EXT, xrgb.pitch,
+    EGL_NONE
+  };
+
+  rgb_t rgb {
+    egl_display,
+    eglCreateImage(egl_display, EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, nullptr, img_attr_planes),
+    gl::tex_t::make(1)
+  };
+
+  if(!rgb->xrgb8) {
+    BOOST_LOG(error) << "Couldn't import RGB Image: "sv << util::hex(eglGetError()).to_string_view();
+
+    return std::nullopt;
+  }
+
+  gl::ctx.BindTexture(GL_TEXTURE_2D, rgb->tex[0]);
+  gl::ctx.EGLImageTargetTexture2DOES(GL_TEXTURE_2D, rgb->xrgb8);
+
+  gl::ctx.BindTexture(GL_TEXTURE_2D, 0);
+
+  gl_drain_errors;
+
+  return rgb;
+}
+
+std::optional<nv12_t> import_target(display_t::pointer egl_display, std::array<file_t, nv12_img_t::num_fds> &&fds, const surface_descriptor_t &r8, const surface_descriptor_t &gr88) {
+  EGLAttrib img_attr_planes[2][13] {
+    { EGL_LINUX_DRM_FOURCC_EXT, DRM_FORMAT_R8,
+      EGL_WIDTH, r8.width,
+      EGL_HEIGHT, r8.height,
+      EGL_DMA_BUF_PLANE0_FD_EXT, r8.fd,
+      EGL_DMA_BUF_PLANE0_OFFSET_EXT, r8.offset,
+      EGL_DMA_BUF_PLANE0_PITCH_EXT, r8.pitch,
+      EGL_NONE },
+
+    { EGL_LINUX_DRM_FOURCC_EXT, DRM_FORMAT_GR88,
+      EGL_WIDTH, gr88.width,
+      EGL_HEIGHT, gr88.height,
+      EGL_DMA_BUF_PLANE0_FD_EXT, r8.fd,
+      EGL_DMA_BUF_PLANE0_OFFSET_EXT, gr88.offset,
+      EGL_DMA_BUF_PLANE0_PITCH_EXT, gr88.pitch,
+      EGL_NONE },
+  };
+
+  nv12_t nv12 {
+    egl_display,
+    eglCreateImage(egl_display, EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, nullptr, img_attr_planes[0]),
+    eglCreateImage(egl_display, EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, nullptr, img_attr_planes[1]),
+    gl::tex_t::make(2),
+    gl::frame_buf_t::make(2),
+    std::move(fds)
+  };
+
+  if(!nv12->r8 || !nv12->bg88) {
+    BOOST_LOG(error) << "Couldn't create KHR Image"sv;
+
+    return std::nullopt;
+  }
+
+  gl::ctx.BindTexture(GL_TEXTURE_2D, nv12->tex[0]);
+  gl::ctx.EGLImageTargetTexture2DOES(GL_TEXTURE_2D, nv12->r8);
+
+  gl::ctx.BindTexture(GL_TEXTURE_2D, nv12->tex[1]);
+  gl::ctx.EGLImageTargetTexture2DOES(GL_TEXTURE_2D, nv12->bg88);
+
+  nv12->buf.bind(std::begin(nv12->tex), std::end(nv12->tex));
+
+  gl_drain_errors;
+
+  return nv12;
+}
+
+void sws_t::set_colorspace(std::uint32_t colorspace, std::uint32_t color_range) {
+  video::color_t *color_p;
+  switch(colorspace) {
+  case 5: // SWS_CS_SMPTE170M
+    color_p = &video::colors[0];
+    break;
+  case 1: // SWS_CS_ITU709
+    color_p = &video::colors[2];
+    break;
+  case 9: // SWS_CS_BT2020
+  default:
+    BOOST_LOG(warning) << "Colorspace: ["sv << colorspace << "] not yet supported: switching to default"sv;
+    color_p = &video::colors[0];
+  };
+
+  if(color_range > 1) {
+    // Full range
+    ++color_p;
+  }
+
+  std::string_view members[] {
+    util::view(color_p->color_vec_y),
+    util::view(color_p->color_vec_u),
+    util::view(color_p->color_vec_v),
+    util::view(color_p->range_y),
+    util::view(color_p->range_uv),
+  };
+
+  color_matrix.update(members, sizeof(members) / sizeof(decltype(members[0])));
+
+  program[0].bind(color_matrix);
+  program[1].bind(color_matrix);
+}
+
+std::optional<sws_t> sws_t::make(int in_width, int in_height, int out_width, int out_heigth, gl::tex_t &&tex) {
+  sws_t sws;
+
+  sws.serial = std::numeric_limits<std::uint64_t>::max();
+
+  // Ensure aspect ratio is maintained
+  auto scalar       = std::fminf(out_width / (float)in_width, out_heigth / (float)in_height);
+  auto out_width_f  = in_width * scalar;
+  auto out_height_f = in_height * scalar;
+
+  // result is always positive
+  auto offsetX_f = (out_width - out_width_f) / 2;
+  auto offsetY_f = (out_heigth - out_height_f) / 2;
+
+  sws.out_width  = out_width_f;
+  sws.out_height = out_height_f;
+
+  sws.in_width  = in_width;
+  sws.in_height = in_height;
+
+  sws.offsetX = offsetX_f;
+  sws.offsetY = offsetY_f;
+
+  auto width_i = 1.0f / sws.out_width;
+
+  {
+    const char *sources[] {
+      SUNSHINE_SHADERS_DIR "/ConvertUV.frag",
+      SUNSHINE_SHADERS_DIR "/ConvertUV.vert",
+      SUNSHINE_SHADERS_DIR "/ConvertY.frag",
+      SUNSHINE_SHADERS_DIR "/Scene.vert",
+      SUNSHINE_SHADERS_DIR "/Scene.frag",
+    };
+
+    GLenum shader_type[2] {
+      GL_FRAGMENT_SHADER,
+      GL_VERTEX_SHADER,
+    };
+
+    constexpr auto count = sizeof(sources) / sizeof(const char *);
+
+    util::Either<gl::shader_t, std::string> compiled_sources[count];
+
+    bool error_flag = false;
+    for(int x = 0; x < count; ++x) {
+      auto &compiled_source = compiled_sources[x];
+
+      compiled_source = gl::shader_t::compile(read_file(sources[x]), shader_type[x % 2]);
+      gl_drain_errors;
+
+      if(compiled_source.has_right()) {
+        BOOST_LOG(error) << sources[x] << ": "sv << compiled_source.right();
+        error_flag = true;
+      }
+    }
+
+    if(error_flag) {
+      return std::nullopt;
+    }
+
+    auto program = gl::program_t::link(compiled_sources[3].left(), compiled_sources[4].left());
+    if(program.has_right()) {
+      BOOST_LOG(error) << "GL linker: "sv << program.right();
+      return std::nullopt;
+    }
+
+    // Cursor - shader
+    sws.program[2] = std::move(program.left());
+
+    program = gl::program_t::link(compiled_sources[1].left(), compiled_sources[0].left());
+    if(program.has_right()) {
+      BOOST_LOG(error) << "GL linker: "sv << program.right();
+      return std::nullopt;
+    }
+
+    // UV - shader
+    sws.program[1] = std::move(program.left());
+
+    program = gl::program_t::link(compiled_sources[3].left(), compiled_sources[2].left());
+    if(program.has_right()) {
+      BOOST_LOG(error) << "GL linker: "sv << program.right();
+      return std::nullopt;
+    }
+
+    // Y - shader
+    sws.program[0] = std::move(program.left());
+  }
+
+  auto loc_width_i = gl::ctx.GetUniformLocation(sws.program[1].handle(), "width_i");
+  if(loc_width_i < 0) {
+    BOOST_LOG(error) << "Couldn't find uniform [width_i]"sv;
+    return std::nullopt;
+  }
+
+  gl::ctx.UseProgram(sws.program[1].handle());
+  gl::ctx.Uniform1fv(loc_width_i, 1, &width_i);
+
+  auto color_p = &video::colors[0];
+  std::pair<const char *, std::string_view> members[] {
+    std::make_pair("color_vec_y", util::view(color_p->color_vec_y)),
+    std::make_pair("color_vec_u", util::view(color_p->color_vec_u)),
+    std::make_pair("color_vec_v", util::view(color_p->color_vec_v)),
+    std::make_pair("range_y", util::view(color_p->range_y)),
+    std::make_pair("range_uv", util::view(color_p->range_uv)),
+  };
+
+  auto color_matrix = sws.program[0].uniform("ColorMatrix", members, sizeof(members) / sizeof(decltype(members[0])));
+  if(!color_matrix) {
+    return std::nullopt;
+  }
+
+  sws.color_matrix = std::move(*color_matrix);
+
+  sws.tex = std::move(tex);
+
+  sws.cursor_framebuffer = gl::frame_buf_t::make(1);
+  sws.cursor_framebuffer.bind(&sws.tex[0], &sws.tex[1]);
+
+  sws.program[0].bind(sws.color_matrix);
+  sws.program[1].bind(sws.color_matrix);
+
+  gl::ctx.BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+  gl_drain_errors;
+
+  return std::move(sws);
+}
+
+std::optional<sws_t> sws_t::make(int in_width, int in_height, int out_width, int out_heigth) {
+  auto tex = gl::tex_t::make(2);
+  gl::ctx.BindTexture(GL_TEXTURE_2D, tex[0]);
+  gl::ctx.TexStorage2D(GL_TEXTURE_2D, 1, GL_RGBA8, in_width, in_height);
+
+  return make(in_width, in_height, out_width, out_heigth, std::move(tex));
+}
+
+void sws_t::load_ram(platf::img_t &img) {
+  gl::ctx.BindTexture(GL_TEXTURE_2D, tex[0]);
+  gl::ctx.TexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, img.width, img.height, GL_BGRA, GL_UNSIGNED_BYTE, img.data);
+}
+
+void sws_t::load_vram(cursor_t &img, int offset_x, int offset_y, int framebuffer) {
+  gl::ctx.BindFramebuffer(GL_FRAMEBUFFER, framebuffer);
+  gl::ctx.ReadBuffer(GL_COLOR_ATTACHMENT0);
+  gl::ctx.BindTexture(GL_TEXTURE_2D, tex[0]);
+  gl::ctx.CopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, offset_x, offset_y, in_width, in_height);
+
+  if(img.data) {
+    gl::ctx.BindTexture(GL_TEXTURE_2D, tex[1]);
+    if(serial != img.serial) {
+      serial = img.serial;
+
+      gl::ctx.TexStorage2D(GL_TEXTURE_2D, 1, GL_RGBA8, img.width, img.height);
+      gl::ctx.TexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, img.width, img.height, GL_BGRA, GL_UNSIGNED_BYTE, img.data);
+    }
+
+    gl::ctx.Enable(GL_BLEND);
+    GLenum attachment = GL_COLOR_ATTACHMENT0;
+    gl::ctx.BindFramebuffer(GL_FRAMEBUFFER, cursor_framebuffer[0]);
+    gl::ctx.DrawBuffers(1, &attachment);
+
+#ifndef NDEBUG
+    auto status = gl::ctx.CheckFramebufferStatus(GL_FRAMEBUFFER);
+    if(status != GL_FRAMEBUFFER_COMPLETE) {
+      BOOST_LOG(error) << "Pass Cursor: CheckFramebufferStatus() --> [0x"sv << util::hex(status).to_string_view() << ']';
+      return;
+    }
+#endif
+
+    gl::ctx.UseProgram(program[2].handle());
+    gl::ctx.Viewport(img.x, img.y, img.width, img.height);
+    gl::ctx.DrawArrays(GL_TRIANGLES, 0, 3);
+
+    gl::ctx.Disable(GL_BLEND);
+  }
+
+  gl::ctx.BindTexture(GL_TEXTURE_2D, 0);
+}
+
+int sws_t::convert(nv12_t &nv12) {
+  gl::ctx.BindTexture(GL_TEXTURE_2D, tex[0]);
+
+  GLenum attachments[] {
+    GL_COLOR_ATTACHMENT0,
+    GL_COLOR_ATTACHMENT1
+  };
+
+  for(int x = 0; x < sizeof(attachments) / sizeof(decltype(attachments[0])); ++x) {
+    gl::ctx.BindFramebuffer(GL_FRAMEBUFFER, nv12->buf[x]);
+    gl::ctx.DrawBuffers(1, &attachments[x]);
+
+#ifndef NDEBUG
+    auto status = gl::ctx.CheckFramebufferStatus(GL_FRAMEBUFFER);
+    if(status != GL_FRAMEBUFFER_COMPLETE) {
+      BOOST_LOG(error) << "Pass "sv << x << ": CheckFramebufferStatus() --> [0x"sv << util::hex(status).to_string_view() << ']';
+      return -1;
+    }
+#endif
+
+    gl::ctx.UseProgram(program[x].handle());
+    gl::ctx.Viewport(offsetX / (x + 1), offsetY / (x + 1), out_width / (x + 1), out_height / (x + 1));
+    gl::ctx.DrawArrays(GL_TRIANGLES, 0, 3);
+  }
+
+  gl::ctx.BindTexture(GL_TEXTURE_2D, 0);
+
+  gl::ctx.Flush();
+
+  return 0;
+}
+} // namespace egl
+
+void free_frame(AVFrame *frame) {
+  av_frame_free(&frame);
+}
\ No newline at end of file
diff --git a/sunshine/platform/linux/graphics.h b/sunshine/platform/linux/graphics.h
new file mode 100644
index 00000000..3513047f
--- /dev/null
+++ b/sunshine/platform/linux/graphics.h
@@ -0,0 +1,267 @@
+#ifndef SUNSHINE_PLATFORM_LINUX_OPENGL_H
+#define SUNSHINE_PLATFORM_LINUX_OPENGL_H
+
+#include <optional>
+#include <string_view>
+
+#include <glad/egl.h>
+#include <glad/gl.h>
+
+#include "misc.h"
+#include "sunshine/main.h"
+#include "sunshine/platform/common.h"
+#include "sunshine/utility.h"
+
+#define SUNSHINE_STRINGIFY(x) #x
+#define gl_drain_errors_helper(x) gl::drain_errors("line " SUNSHINE_STRINGIFY(x))
+#define gl_drain_errors gl_drain_errors_helper(__LINE__)
+
+extern "C" int close(int __fd);
+
+struct AVFrame;
+void free_frame(AVFrame *frame);
+
+using frame_t = util::safe_ptr<AVFrame, free_frame>;
+
+namespace gl {
+extern GladGLContext ctx;
+void drain_errors(const std::string_view &prefix);
+
+class tex_t : public util::buffer_t<GLuint> {
+  using util::buffer_t<GLuint>::buffer_t;
+
+public:
+  tex_t(tex_t &&) = default;
+  tex_t &operator=(tex_t &&) = default;
+
+  ~tex_t();
+
+  static tex_t make(std::size_t count);
+};
+
+class frame_buf_t : public util::buffer_t<GLuint> {
+  using util::buffer_t<GLuint>::buffer_t;
+
+public:
+  frame_buf_t(frame_buf_t &&) = default;
+  frame_buf_t &operator=(frame_buf_t &&) = default;
+
+  ~frame_buf_t();
+
+  static frame_buf_t make(std::size_t count);
+
+  template<class It>
+  void bind(It it_begin, It it_end) {
+    using namespace std::literals;
+    if(std::distance(it_begin, it_end) > size()) {
+      BOOST_LOG(warning) << "To many elements to bind"sv;
+      return;
+    }
+
+    int x = 0;
+    std::for_each(it_begin, it_end, [&](auto tex) {
+      ctx.BindFramebuffer(GL_FRAMEBUFFER, (*this)[x]);
+      ctx.BindTexture(GL_TEXTURE_2D, tex);
+
+      ctx.FramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + x, tex, 0);
+
+      ++x;
+    });
+  }
+};
+
+class shader_t {
+  KITTY_USING_MOVE_T(shader_internal_t, GLuint, std::numeric_limits<GLuint>::max(), {
+    if(el != std::numeric_limits<GLuint>::max()) {
+      ctx.DeleteShader(el);
+    }
+  });
+
+public:
+  std::string err_str();
+
+  static util::Either<shader_t, std::string> compile(const std::string_view &source, GLenum type);
+
+  GLuint handle() const;
+
+private:
+  shader_internal_t _shader;
+};
+
+class buffer_t {
+  KITTY_USING_MOVE_T(buffer_internal_t, GLuint, std::numeric_limits<GLuint>::max(), {
+    if(el != std::numeric_limits<GLuint>::max()) {
+      ctx.DeleteBuffers(1, &el);
+    }
+  });
+
+public:
+  static buffer_t make(util::buffer_t<GLint> &&offsets, const char *block, const std::string_view &data);
+
+  GLuint handle() const;
+
+  const char *block() const;
+
+  void update(const std::string_view &view, std::size_t offset = 0);
+  void update(std::string_view *members, std::size_t count, std::size_t offset = 0);
+
+private:
+  const char *_block;
+
+  std::size_t _size;
+
+  util::buffer_t<GLint> _offsets;
+
+  buffer_internal_t _buffer;
+};
+
+class program_t {
+  KITTY_USING_MOVE_T(program_internal_t, GLuint, std::numeric_limits<GLuint>::max(), {
+    if(el != std::numeric_limits<GLuint>::max()) {
+      ctx.DeleteProgram(el);
+    }
+  });
+
+public:
+  std::string err_str();
+
+  static util::Either<program_t, std::string> link(const shader_t &vert, const shader_t &frag);
+
+  void bind(const buffer_t &buffer);
+
+  std::optional<buffer_t> uniform(const char *block, std::pair<const char *, std::string_view> *members, std::size_t count);
+
+  GLuint handle() const;
+
+private:
+  program_internal_t _program;
+};
+} // namespace gl
+
+namespace gbm {
+struct device;
+typedef void (*device_destroy_fn)(device *gbm);
+typedef device *(*create_device_fn)(int fd);
+
+extern device_destroy_fn device_destroy;
+extern create_device_fn create_device;
+
+using gbm_t = util::dyn_safe_ptr<device, &device_destroy>;
+
+int init();
+
+} // namespace gbm
+
+namespace egl {
+using display_t = util::dyn_safe_ptr_v2<void, EGLBoolean, &eglTerminate>;
+
+struct rgb_img_t {
+  display_t::pointer display;
+  EGLImage xrgb8;
+
+  gl::tex_t tex;
+};
+
+struct nv12_img_t {
+  display_t::pointer display;
+  EGLImage r8;
+  EGLImage bg88;
+
+  gl::tex_t tex;
+  gl::frame_buf_t buf;
+
+  // sizeof(va::DRMPRIMESurfaceDescriptor::objects) / sizeof(va::DRMPRIMESurfaceDescriptor::objects[0]);
+  static constexpr std::size_t num_fds = 4;
+
+  std::array<file_t, num_fds> fds;
+};
+
+KITTY_USING_MOVE_T(rgb_t, rgb_img_t, , {
+  if(el.xrgb8) {
+    eglDestroyImage(el.display, el.xrgb8);
+  }
+});
+
+KITTY_USING_MOVE_T(nv12_t, nv12_img_t, , {
+  if(el.r8) {
+    eglDestroyImage(el.display, el.r8);
+  }
+
+  if(el.bg88) {
+    eglDestroyImage(el.display, el.bg88);
+  }
+});
+
+KITTY_USING_MOVE_T(ctx_t, (std::tuple<display_t::pointer, EGLContext>), , {
+  TUPLE_2D_REF(disp, ctx, el);
+  if(ctx) {
+    eglMakeCurrent(disp, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+    eglDestroyContext(disp, ctx);
+  }
+});
+
+struct surface_descriptor_t {
+  int fd;
+
+  int width;
+  int height;
+  int offset;
+  int pitch;
+};
+
+display_t make_display(gbm::gbm_t::pointer gbm);
+std::optional<ctx_t> make_ctx(display_t::pointer display);
+
+std::optional<rgb_t> import_source(
+  display_t::pointer egl_display,
+  const surface_descriptor_t &xrgb);
+
+std::optional<nv12_t> import_target(
+  display_t::pointer egl_display,
+  std::array<file_t, nv12_img_t::num_fds> &&fds,
+  const surface_descriptor_t &r8, const surface_descriptor_t &gr88);
+
+class cursor_t : public platf::img_t {
+public:
+  int x, y;
+
+  unsigned long serial;
+
+  std::vector<std::uint8_t> buffer;
+};
+
+class sws_t {
+public:
+  static std::optional<sws_t> make(int in_width, int in_height, int out_width, int out_heigth, gl::tex_t &&tex);
+  static std::optional<sws_t> make(int in_width, int in_height, int out_width, int out_heigth);
+
+  int convert(nv12_t &nv12);
+
+  void load_ram(platf::img_t &img);
+  void load_vram(cursor_t &img, int offset_x, int offset_y, int framebuffer);
+
+  void set_colorspace(std::uint32_t colorspace, std::uint32_t color_range);
+
+  // The first texture is the monitor image.
+  // The second texture is the cursor image
+  gl::tex_t tex;
+
+  // The cursor image will be blended into this framebuffer
+  gl::frame_buf_t cursor_framebuffer;
+
+  // Y - shader, UV - shader, Cursor - shader
+  gl::program_t program[3];
+  gl::buffer_t color_matrix;
+
+  int out_width, out_height;
+  int in_width, in_height;
+  int offsetX, offsetY;
+
+  // Store latest cursor for load_vram
+  std::uint64_t serial;
+};
+
+bool fail();
+} // namespace egl
+
+#endif
\ No newline at end of file
diff --git a/sunshine/platform/linux/kmsgrab.cpp b/sunshine/platform/linux/kmsgrab.cpp
new file mode 100644
index 00000000..d775946a
--- /dev/null
+++ b/sunshine/platform/linux/kmsgrab.cpp
@@ -0,0 +1,745 @@
+#include <drm_fourcc.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+
+#include <filesystem>
+
+#include "sunshine/main.h"
+#include "sunshine/platform/common.h"
+#include "sunshine/round_robin.h"
+#include "sunshine/utility.h"
+
+// Cursor rendering support through x11
+#include "graphics.h"
+#include "vaapi.h"
+#include "x11grab.h"
+
+using namespace std::literals;
+namespace fs = std::filesystem;
+
+namespace platf {
+
+namespace kms {
+using plane_res_t = util::safe_ptr<drmModePlaneRes, drmModeFreePlaneResources>;
+using plane_t     = util::safe_ptr<drmModePlane, drmModeFreePlane>;
+using fb_t        = util::safe_ptr<drmModeFB, drmModeFreeFB>;
+using crtc_t      = util::safe_ptr<drmModeCrtc, drmModeFreeCrtc>;
+using obj_prop_t  = util::safe_ptr<drmModeObjectProperties, drmModeFreeObjectProperties>;
+using prop_t      = util::safe_ptr<drmModePropertyRes, drmModeFreeProperty>;
+
+static int env_width;
+static int env_height;
+
+std::string_view plane_type(std::uint64_t val) {
+  switch(val) {
+  case DRM_PLANE_TYPE_OVERLAY:
+    return "DRM_PLANE_TYPE_OVERLAY"sv;
+  case DRM_PLANE_TYPE_PRIMARY:
+    return "DRM_PLANE_TYPE_PRIMARY"sv;
+  case DRM_PLANE_TYPE_CURSOR:
+    return "DRM_PLANE_TYPE_CURSOR"sv;
+  }
+
+  return "UNKNOWN"sv;
+}
+
+class plane_it_t : public util::it_wrap_t<plane_t::element_type, plane_it_t> {
+public:
+  plane_it_t(int fd, std::uint32_t *plane_p, std::uint32_t *end)
+      : fd { fd }, plane_p { plane_p }, end { end } {
+    inc();
+  }
+
+  plane_it_t(int fd, std::uint32_t *end)
+      : fd { fd }, plane_p { end }, end { end } {}
+
+  void inc() {
+    this->plane.reset();
+
+    for(; plane_p != end; ++plane_p) {
+      plane_t plane = drmModeGetPlane(fd, *plane_p);
+
+      if(!plane) {
+        BOOST_LOG(error) << "Couldn't get drm plane ["sv << (end - plane_p) << "]: "sv << strerror(errno);
+        continue;
+      }
+
+      // If this plane is unused
+      if(plane->fb_id) {
+        this->plane = util::make_shared<plane_t>(plane.release());
+
+        // One last increment
+        ++plane_p;
+        break;
+      }
+    }
+  }
+
+  bool eq(const plane_it_t &other) const {
+    return plane_p == other.plane_p;
+  }
+
+  plane_t::pointer get() {
+    return plane.get();
+  }
+
+  int fd;
+  std::uint32_t *plane_p;
+  std::uint32_t *end;
+
+  util::shared_t<plane_t> plane;
+};
+
+class card_t {
+public:
+  int init(const char *path) {
+    fd.el = open(path, O_RDWR);
+
+    if(fd.el < 0) {
+      BOOST_LOG(error) << "Couldn't open: "sv << path << ": "sv << strerror(errno);
+      return -1;
+    }
+
+    if(drmSetClientCap(fd.el, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1)) {
+      BOOST_LOG(error) << "Couldn't expose some/all drm planes for card: "sv << path;
+      return -1;
+    }
+
+    if(drmSetClientCap(fd.el, DRM_CLIENT_CAP_ATOMIC, 1)) {
+      BOOST_LOG(warning) << "Couldn't expose some properties for card: "sv << path;
+    }
+
+    plane_res.reset(drmModeGetPlaneResources(fd.el));
+    if(!plane_res) {
+      BOOST_LOG(error) << "Couldn't get drm plane resources"sv;
+      return -1;
+    }
+
+    return 0;
+  }
+
+  fb_t fb(plane_t::pointer plane) {
+    return drmModeGetFB(fd.el, plane->fb_id);
+  }
+
+  crtc_t crtc(std::uint32_t id) {
+    return drmModeGetCrtc(fd.el, id);
+  }
+
+  file_t handleFD(std::uint32_t handle) {
+    file_t fb_fd;
+
+    auto status = drmPrimeHandleToFD(fd.el, handle, 0 /* flags */, &fb_fd.el);
+    if(status) {
+      return {};
+    }
+
+    return fb_fd;
+  }
+
+
+  std::vector<std::pair<prop_t, std::uint64_t>> props(std::uint32_t id, std::uint32_t type) {
+    obj_prop_t obj_prop = drmModeObjectGetProperties(fd.el, id, type);
+
+    std::vector<std::pair<prop_t, std::uint64_t>> props;
+    props.reserve(obj_prop->count_props);
+
+    for(auto x = 0; x < obj_prop->count_props; ++x) {
+      props.emplace_back(drmModeGetProperty(fd.el, obj_prop->props[x]), obj_prop->prop_values[x]);
+    }
+
+    return props;
+  }
+
+  std::vector<std::pair<prop_t, std::uint64_t>> plane_props(std::uint32_t id) {
+    return props(id, DRM_MODE_OBJECT_PLANE);
+  }
+
+  std::vector<std::pair<prop_t, std::uint64_t>> crtc_props(std::uint32_t id) {
+    return props(id, DRM_MODE_OBJECT_CRTC);
+  }
+
+  std::vector<std::pair<prop_t, std::uint64_t>> connector_props(std::uint32_t id) {
+    return props(id, DRM_MODE_OBJECT_CONNECTOR);
+  }
+
+  plane_t
+  operator[](std::uint32_t index) {
+    return drmModeGetPlane(fd.el, plane_res->planes[index]);
+  }
+
+  std::uint32_t count() {
+    return plane_res->count_planes;
+  }
+
+  plane_it_t begin() const {
+    return plane_it_t { fd.el, plane_res->planes, plane_res->planes + plane_res->count_planes };
+  }
+
+  plane_it_t end() const {
+    return plane_it_t { fd.el, plane_res->planes + plane_res->count_planes };
+  }
+
+
+  file_t fd;
+  plane_res_t plane_res;
+};
+
+struct kms_img_t : public img_t {
+  ~kms_img_t() override {
+    delete[] data;
+    data = nullptr;
+  }
+};
+
+void print(plane_t::pointer plane, fb_t::pointer fb, crtc_t::pointer crtc) {
+  if(crtc) {
+    BOOST_LOG(debug) << "crtc("sv << crtc->x << ", "sv << crtc->y << ')';
+    BOOST_LOG(debug) << "crtc("sv << crtc->width << ", "sv << crtc->height << ')';
+    BOOST_LOG(debug) << "plane->possible_crtcs == "sv << plane->possible_crtcs;
+  }
+
+  BOOST_LOG(debug)
+    << "x("sv << plane->x
+    << ") y("sv << plane->y
+    << ") crtc_x("sv << plane->crtc_x
+    << ") crtc_y("sv << plane->crtc_y
+    << ") crtc_id("sv << plane->crtc_id
+    << ')';
+
+  BOOST_LOG(debug)
+    << "Resolution: "sv << fb->width << 'x' << fb->height
+    << ": Pitch: "sv << fb->pitch
+    << ": bpp: "sv << fb->bpp
+    << ": depth: "sv << fb->depth;
+
+  std::stringstream ss;
+
+  ss << "Format ["sv;
+  std::for_each_n(plane->formats, plane->count_formats - 1, [&ss](auto format) {
+    ss << util::view(format) << ", "sv;
+  });
+
+  ss << util::view(plane->formats[plane->count_formats - 1]) << ']';
+
+  BOOST_LOG(debug) << ss.str();
+}
+
+class display_t : public platf::display_t {
+public:
+  display_t(mem_type_e mem_type) : platf::display_t(), mem_type { mem_type } {}
+  ~display_t() {
+    while(!thread_pool.cancel(loop_id))
+      ;
+  }
+
+  mem_type_e mem_type;
+
+  std::chrono::nanoseconds delay;
+
+  // Done on a seperate thread to prevent additional latency to capture code
+  // This code detects if the framebuffer has been removed from KMS
+  void task_loop() {
+    capture_e capture = capture_e::reinit;
+
+    std::uint32_t framebuffer_count = 0;
+
+    auto end = std::end(card);
+    for(auto plane = std::begin(card); plane != end; ++plane) {
+      if(++framebuffer_count != framebuffer_index) {
+        continue;
+      }
+
+      auto fb = card.fb(plane.get());
+      if(!fb) {
+        BOOST_LOG(error) << "Couldn't get drm fb for plane ["sv << plane->fb_id << "]: "sv << strerror(errno);
+        capture = capture_e::error;
+      }
+
+      auto crct = card.crtc(plane->crtc_id);
+
+      bool different =
+        fb->width != img_width ||
+        fb->height != img_height ||
+        fb->pitch != pitch ||
+        crct->x != offset_x ||
+        crct->y != offset_y;
+
+      if(!different) {
+        capture = capture_e::ok;
+        break;
+      }
+    }
+
+    this->status = capture;
+
+    loop_id = thread_pool.pushDelayed(&display_t::task_loop, 2s, this).task_id;
+  }
+
+  int init(const std::string &display_name, int framerate) {
+    delay = std::chrono::nanoseconds { 1s } / framerate;
+
+    int monitor_index = util::from_view(display_name);
+    int monitor       = 0;
+
+    fs::path card_dir { "/dev/dri"sv };
+    for(auto &entry : fs::directory_iterator { card_dir }) {
+      auto file = entry.path().filename();
+
+      auto filestring = file.generic_u8string();
+      if(std::string_view { filestring }.substr(0, 4) != "card"sv) {
+        continue;
+      }
+
+      kms::card_t card;
+      if(card.init(entry.path().c_str())) {
+        return {};
+      }
+
+      std::uint32_t framebuffer_index = 0;
+
+      auto end = std::end(card);
+      for(auto plane = std::begin(card); plane != end; ++plane) {
+        ++framebuffer_index;
+
+        bool cursor = false;
+
+        auto props = card.plane_props(plane->plane_id);
+        for(auto &[prop, val] : props) {
+          if(prop->name == "type"sv) {
+            BOOST_LOG(verbose) << prop->name << "::"sv << kms::plane_type(val);
+
+            if(val == DRM_PLANE_TYPE_CURSOR) {
+              // Don't count as a monitor when it is a cursor
+              cursor = true;
+              break;
+            }
+          }
+        }
+
+        if(cursor) {
+          continue;
+        }
+
+        if(monitor != monitor_index) {
+          ++monitor;
+          continue;
+        }
+
+        auto fb = card.fb(plane.get());
+        if(!fb) {
+          BOOST_LOG(error) << "Couldn't get drm fb for plane ["sv << plane->fb_id << "]: "sv << strerror(errno);
+          return -1;
+        }
+
+        if(!fb->handle) {
+          BOOST_LOG(error)
+            << "Couldn't get handle for DRM Framebuffer ["sv << plane->fb_id << "]: Possibly not permitted: do [sudo setcap cap_sys_admin+ep sunshine]"sv;
+          return -1;
+        }
+
+        fb_fd = card.handleFD(fb->handle);
+        if(fb_fd.el < 0) {
+          BOOST_LOG(error) << "Couldn't get primary file descriptor for Framebuffer ["sv << fb->fb_id << "]: "sv << strerror(errno);
+          continue;
+        }
+
+        BOOST_LOG(info) << "Found monitor for DRM screencasting"sv;
+
+        auto crct = card.crtc(plane->crtc_id);
+        kms::print(plane.get(), fb.get(), crct.get());
+
+        img_width  = fb->width;
+        img_height = fb->height;
+
+        width  = crct->width;
+        height = crct->height;
+
+        pitch = fb->pitch;
+
+        this->env_width  = ::platf::kms::env_width;
+        this->env_height = ::platf::kms::env_height;
+
+        offset_x = crct->x;
+        offset_y = crct->y;
+
+        this->card = std::move(card);
+
+        this->framebuffer_index = framebuffer_index;
+
+        goto break_loop;
+      }
+    }
+
+  // Neatly break from nested for loop
+  break_loop:
+    if(monitor != monitor_index) {
+      BOOST_LOG(error) << "Couldn't find monitor ["sv << monitor_index << ']';
+
+      return -1;
+    }
+
+    cursor_opt = x11::cursor_t::make();
+
+    status = capture_e::ok;
+
+    thread_pool.start(1);
+    loop_id = thread_pool.pushDelayed(&display_t::task_loop, 2s, this).task_id;
+
+    return 0;
+  }
+
+  // When the framebuffer is reinitialized, this id can no longer be found
+  std::uint32_t framebuffer_index;
+
+  capture_e status;
+
+  int img_width, img_height;
+  int pitch;
+
+  card_t card;
+  file_t fb_fd;
+
+  std::optional<x11::cursor_t> cursor_opt;
+
+  util::TaskPool::task_id_t loop_id;
+  util::ThreadPool thread_pool;
+};
+
+class display_ram_t : public display_t {
+public:
+  display_ram_t(mem_type_e mem_type) : display_t(mem_type) {}
+
+  int init(const std::string &display_name, int framerate) {
+    if(!gbm::create_device) {
+      BOOST_LOG(warning) << "libgbm not initialized"sv;
+      return -1;
+    }
+
+    if(display_t::init(display_name, framerate)) {
+      return -1;
+    }
+
+    gbm.reset(gbm::create_device(card.fd.el));
+    if(!gbm) {
+      BOOST_LOG(error) << "Couldn't create GBM device: ["sv << util::hex(eglGetError()).to_string_view() << ']';
+      return -1;
+    }
+
+    display = egl::make_display(gbm.get());
+    if(!display) {
+      return -1;
+    }
+
+    auto ctx_opt = egl::make_ctx(display.get());
+    if(!ctx_opt) {
+      return -1;
+    }
+
+    ctx = std::move(*ctx_opt);
+
+    auto rgb_opt = egl::import_source(display.get(),
+      {
+        fb_fd.el,
+        img_width,
+        img_height,
+        0,
+        pitch,
+      });
+
+    if(!rgb_opt) {
+      return -1;
+    }
+
+    rgb = std::move(*rgb_opt);
+
+    return 0;
+  }
+
+  capture_e capture(snapshot_cb_t &&snapshot_cb, std::shared_ptr<img_t> img, bool *cursor) {
+    auto next_frame = std::chrono::steady_clock::now();
+
+    while(img) {
+      auto now = std::chrono::steady_clock::now();
+
+      if(next_frame > now) {
+        std::this_thread::sleep_for((next_frame - now) / 3 * 2);
+      }
+      while(next_frame > now) {
+        now = std::chrono::steady_clock::now();
+      }
+      next_frame = now + delay;
+
+      auto status = snapshot(img.get(), 1000ms, *cursor);
+      switch(status) {
+      case platf::capture_e::reinit:
+      case platf::capture_e::error:
+        return status;
+      case platf::capture_e::timeout:
+        std::this_thread::sleep_for(1ms);
+        continue;
+      case platf::capture_e::ok:
+        img = snapshot_cb(img);
+        break;
+      default:
+        BOOST_LOG(error) << "Unrecognized capture status ["sv << (int)status << ']';
+        return status;
+      }
+    }
+
+    return capture_e::ok;
+  }
+
+  std::shared_ptr<hwdevice_t> make_hwdevice(pix_fmt_e pix_fmt) override {
+    if(mem_type == mem_type_e::vaapi) {
+      return va::make_hwdevice(width, height);
+    }
+
+    return std::make_shared<hwdevice_t>();
+  }
+
+  capture_e snapshot(img_t *img_out_base, std::chrono::milliseconds timeout, bool cursor) {
+    gl::ctx.BindTexture(GL_TEXTURE_2D, rgb->tex[0]);
+    gl::ctx.GetTextureSubImage(rgb->tex[0], 0, offset_x, offset_y, 0, width, height, 1, GL_BGRA, GL_UNSIGNED_BYTE, img_out_base->height * img_out_base->row_pitch, img_out_base->data);
+
+    if(cursor_opt && cursor) {
+      cursor_opt->blend(*img_out_base, offset_x, offset_y);
+    }
+
+    return status;
+  }
+
+  std::shared_ptr<img_t> alloc_img() override {
+    auto img         = std::make_shared<kms_img_t>();
+    img->width       = width;
+    img->height      = height;
+    img->pixel_pitch = 4;
+    img->row_pitch   = img->pixel_pitch * width;
+    img->data        = new std::uint8_t[height * img->row_pitch];
+
+    return img;
+  }
+
+  int dummy_img(platf::img_t *img) override {
+    snapshot(img, 1s, false);
+    return 0;
+  }
+
+  gbm::gbm_t gbm;
+  egl::display_t display;
+  egl::ctx_t ctx;
+
+  egl::rgb_t rgb;
+};
+
+class display_vram_t : public display_t {
+public:
+  display_vram_t(mem_type_e mem_type) : display_t(mem_type) {}
+
+  std::shared_ptr<hwdevice_t> make_hwdevice(pix_fmt_e pix_fmt) override {
+    if(mem_type == mem_type_e::vaapi) {
+      return va::make_hwdevice(width, height, dup(card.fd.el), offset_x, offset_y,
+        {
+          fb_fd.el,
+          img_width,
+          img_height,
+          0,
+          pitch,
+        });
+    }
+
+    BOOST_LOG(error) << "Unsupported pixel format for egl::display_vram_t: "sv << platf::from_pix_fmt(pix_fmt);
+    return nullptr;
+  }
+
+  std::shared_ptr<img_t> alloc_img() override {
+    auto img = std::make_shared<egl::cursor_t>();
+
+    img->serial      = std::numeric_limits<decltype(img->serial)>::max();
+    img->data        = nullptr;
+    img->pixel_pitch = 4;
+
+    return img;
+  }
+
+  int dummy_img(platf::img_t *img) override {
+    return 0;
+  }
+
+  capture_e capture(snapshot_cb_t &&snapshot_cb, std::shared_ptr<img_t> img, bool *cursor) {
+    auto next_frame = std::chrono::steady_clock::now();
+
+    while(img) {
+      auto now = std::chrono::steady_clock::now();
+
+      if(next_frame > now) {
+        std::this_thread::sleep_for((next_frame - now) / 3 * 2);
+      }
+      while(next_frame > now) {
+        now = std::chrono::steady_clock::now();
+      }
+      next_frame = now + delay;
+
+      auto status = snapshot(img.get(), 1000ms, *cursor);
+      switch(status) {
+      case platf::capture_e::reinit:
+      case platf::capture_e::error:
+        return status;
+      case platf::capture_e::timeout:
+        std::this_thread::sleep_for(1ms);
+        continue;
+      case platf::capture_e::ok:
+        img = snapshot_cb(img);
+        break;
+      default:
+        BOOST_LOG(error) << "Unrecognized capture status ["sv << (int)status << ']';
+        return status;
+      }
+    }
+
+    return capture_e::ok;
+  }
+
+  capture_e snapshot(img_t *img_out_base, std::chrono::milliseconds /* timeout */, bool cursor) {
+    if(!cursor || !cursor_opt) {
+      img_out_base->data = nullptr;
+      return capture_e::ok;
+    }
+
+    auto img = (egl::cursor_t *)img_out_base;
+    cursor_opt->capture(*img);
+
+    img->x -= offset_x;
+    img->y -= offset_y;
+
+    return status;
+  }
+
+  int init(const std::string &display_name, int framerate) {
+    if(display_t::init(display_name, framerate)) {
+      return -1;
+    }
+
+    if(!va::validate(card.fd.el)) {
+      BOOST_LOG(warning) << "Monitor "sv << display_name << " doesn't support hardware encoding. Reverting back to GPU -> RAM -> GPU"sv;
+      return -1;
+    }
+
+    return 0;
+  }
+};
+} // namespace kms
+
+std::shared_ptr<display_t> kms_display(mem_type_e hwdevice_type, const std::string &display_name, int framerate) {
+  if(hwdevice_type == mem_type_e::vaapi) {
+    auto disp = std::make_shared<kms::display_vram_t>(hwdevice_type);
+
+    if(!disp->init(display_name, framerate)) {
+      return disp;
+    }
+
+    // In the case of failure, attempt the old method for VAAPI
+  }
+
+  auto disp = std::make_shared<kms::display_ram_t>(hwdevice_type);
+
+  if(disp->init(display_name, framerate)) {
+    return nullptr;
+  }
+
+  return disp;
+}
+
+// A list of names of displays accepted as display_name
+std::vector<std::string> kms_display_names() {
+  kms::env_width  = 0;
+  kms::env_height = 0;
+
+  int count = 0;
+
+  if(!gbm::create_device) {
+    BOOST_LOG(warning) << "libgbm not initialized"sv;
+    return {};
+  }
+
+  std::vector<std::string> display_names;
+
+  fs::path card_dir { "/dev/dri"sv };
+  for(auto &entry : fs::directory_iterator { card_dir }) {
+    auto file = entry.path().filename();
+
+    auto filestring = file.generic_u8string();
+    if(std::string_view { filestring }.substr(0, 4) != "card"sv) {
+      continue;
+    }
+
+    kms::card_t card;
+    if(card.init(entry.path().c_str())) {
+      return {};
+    }
+
+    auto end = std::end(card);
+    for(auto plane = std::begin(card); plane != end; ++plane) {
+      auto fb = card.fb(plane.get());
+      if(!fb) {
+        BOOST_LOG(error) << "Couldn't get drm fb for plane ["sv << plane->fb_id << "]: "sv << strerror(errno);
+        continue;
+      }
+
+      if(!fb->handle) {
+        BOOST_LOG(error)
+          << "Couldn't get handle for DRM Framebuffer ["sv << plane->fb_id << "]: Possibly not permitted: do [sudo setcap cap_sys_admin+ep sunshine]"sv;
+        break;
+      }
+
+      bool cursor = false;
+      {
+        BOOST_LOG(verbose) << "PLANE INFO ["sv << count << ']';
+        auto props = card.plane_props(plane->plane_id);
+        for(auto &[prop, val] : props) {
+          if(prop->name == "type"sv) {
+            BOOST_LOG(verbose) << prop->name << "::"sv << kms::plane_type(val);
+
+            if(val == DRM_PLANE_TYPE_CURSOR) {
+              cursor = true;
+            }
+          }
+          else {
+            BOOST_LOG(verbose) << prop->name << "::"sv << val;
+          }
+        }
+      }
+
+      {
+        BOOST_LOG(verbose) << "CRTC INFO"sv;
+        auto props = card.crtc_props(plane->crtc_id);
+        for(auto &[prop, val] : props) {
+          BOOST_LOG(verbose) << prop->name << "::"sv << val;
+        }
+      }
+
+      // This appears to return the offset of the monitor
+      auto crtc = card.crtc(plane->crtc_id);
+      if(!crtc) {
+        BOOST_LOG(error) << "Couldn't get crtc info: "sv << strerror(errno);
+        return {};
+      }
+
+      kms::env_width  = std::max(kms::env_width, (int)(crtc->x + crtc->width));
+      kms::env_height = std::max(kms::env_height, (int)(crtc->y + crtc->height));
+
+      kms::print(plane.get(), fb.get(), crtc.get());
+
+      if(!cursor) {
+        display_names.emplace_back(std::to_string(count++));
+      }
+    }
+  }
+
+  return display_names;
+}
+
+} // namespace platf
\ No newline at end of file
diff --git a/sunshine/platform/linux/misc.cpp b/sunshine/platform/linux/misc.cpp
index c4c63e84..0e80c379 100644
--- a/sunshine/platform/linux/misc.cpp
+++ b/sunshine/platform/linux/misc.cpp
@@ -7,7 +7,10 @@
 
 #include <fstream>
 
+#include "graphics.h"
 #include "misc.h"
+#include "vaapi.h"
+
 #include "sunshine/main.h"
 #include "sunshine/platform/common.h"
 
@@ -20,6 +23,47 @@
 using namespace std::literals;
 namespace fs = std::filesystem;
 
+namespace dyn {
+void *handle(const std::vector<const char *> &libs) {
+  void *handle;
+
+  for(auto lib : libs) {
+    handle = dlopen(lib, RTLD_LAZY | RTLD_LOCAL);
+    if(handle) {
+      return handle;
+    }
+  }
+
+  std::stringstream ss;
+  ss << "Couldn't find any of the following libraries: ["sv << libs.front();
+  std::for_each(std::begin(libs) + 1, std::end(libs), [&](auto lib) {
+    ss << ", "sv << lib;
+  });
+
+  ss << ']';
+
+  BOOST_LOG(error) << ss.str();
+
+  return nullptr;
+}
+
+int load(void *handle, const std::vector<std::tuple<apiproc *, const char *>> &funcs, bool strict) {
+  int err = 0;
+  for(auto &func : funcs) {
+    TUPLE_2D_REF(fn, name, func);
+
+    *fn = SUNSHINE_GNUC_EXTENSION(apiproc) dlsym(handle, name);
+
+    if(!*fn && strict) {
+      BOOST_LOG(error) << "Couldn't find function: "sv << name;
+
+      err = -1;
+    }
+  }
+
+  return err;
+}
+} // namespace dyn
 namespace platf {
 using ifaddr_t = util::safe_ptr<ifaddrs, freeifaddrs>;
 
@@ -93,46 +137,94 @@ std::string get_mac_address(const std::string_view &address) {
   BOOST_LOG(warning) << "Unable to find MAC address for "sv << address;
   return "00:00:00:00:00:00"s;
 }
-} // namespace platf
 
-namespace dyn {
-void *handle(const std::vector<const char *> &libs) {
-  void *handle;
+enum class source_e {
+#ifdef SUNSHINE_BUILD_DRM
+  KMS,
+#endif
+#ifdef SUNSHINE_BUILD_X11
+  X11,
+#endif
+};
+static source_e source;
 
-  for(auto lib : libs) {
-    handle = dlopen(lib, RTLD_LAZY | RTLD_LOCAL);
-    if(handle) {
-      return handle;
-    }
+#ifdef SUNSHINE_BUILD_DRM
+std::vector<std::string> kms_display_names();
+std::shared_ptr<display_t> kms_display(mem_type_e hwdevice_type, const std::string &display_name, int framerate);
+
+bool verify_kms() {
+  return !kms_display_names().empty();
+}
+#endif
+
+#ifdef SUNSHINE_BUILD_X11
+std::vector<std::string> x11_display_names();
+std::shared_ptr<display_t> x11_display(mem_type_e hwdevice_type, const std::string &display_name, int framerate);
+
+bool verify_x11() {
+  return !x11_display_names().empty();
+}
+#endif
+
+std::vector<std::string> display_names() {
+  switch(source) {
+#ifdef SUNSHINE_BUILD_DRM
+  case source_e::KMS:
+    return kms_display_names();
+#endif
+#ifdef SUNSHINE_BUILD_X11
+  case source_e::X11:
+    return x11_display_names();
+#endif
   }
 
-  std::stringstream ss;
-  ss << "Couldn't find any of the following libraries: ["sv << libs.front();
-  std::for_each(std::begin(libs) + 1, std::end(libs), [&](auto lib) {
-    ss << ", "sv << lib;
-  });
+  return {};
+}
 
-  ss << ']';
-
-  BOOST_LOG(error) << ss.str();
+std::shared_ptr<display_t> display(mem_type_e hwdevice_type, const std::string &display_name, int framerate) {
+  switch(source) {
+#ifdef SUNSHINE_BUILD_DRM
+  case source_e::KMS:
+    return kms_display(hwdevice_type, display_name, framerate);
+#endif
+#ifdef SUNSHINE_BUILD_X11
+  case source_e::X11:
+    return x11_display(hwdevice_type, display_name, framerate);
+#endif
+  }
 
   return nullptr;
 }
 
-int load(void *handle, const std::vector<std::tuple<apiproc *, const char *>> &funcs, bool strict) {
-  int err = 0;
-  for(auto &func : funcs) {
-    TUPLE_2D_REF(fn, name, func);
+std::unique_ptr<deinit_t> init() {
+  // These are allowed to fail.
+  gbm::init();
+  va::init();
 
-    *fn = SUNSHINE_GNUC_EXTENSION(apiproc) dlsym(handle, name);
+#ifdef SUNSHINE_BUILD_DRM
+  if(verify_kms()) {
+    BOOST_LOG(info) << "Using KMS for screencasting"sv;
+    source = source_e::KMS;
+    goto found_source;
+  }
+#endif
+#ifdef SUNSHINE_BUILD_X11
+  if(verify_x11()) {
+    BOOST_LOG(info) << "Using X11 for screencasting"sv;
+    source = source_e::X11;
+    goto found_source;
+  }
+#endif
+  // Did not find a source
+  return nullptr;
 
-    if(!*fn && strict) {
-      BOOST_LOG(error) << "Couldn't find function: "sv << name;
-
-      err = -1;
-    }
+// Normally, I would simply use if-else statements to achieve this result,
+// but due to the macro's, (*spits on ground*), it would be too messy
+found_source:
+  if(!gladLoaderLoadEGL(EGL_NO_DISPLAY) || !eglGetPlatformDisplay) {
+    BOOST_LOG(warning) << "Couldn't load EGL library"sv;
   }
 
-  return err;
+  return std::make_unique<deinit_t>();
 }
-} // namespace dyn
\ No newline at end of file
+} // namespace platf
\ No newline at end of file
diff --git a/sunshine/platform/linux/misc.h b/sunshine/platform/linux/misc.h
index 70c9d880..cdefff64 100644
--- a/sunshine/platform/linux/misc.h
+++ b/sunshine/platform/linux/misc.h
@@ -1,8 +1,17 @@
 #ifndef SUNSHINE_PLATFORM_MISC_H
 #define SUNSHINE_PLATFORM_MISC_H
 
+#include <unistd.h>
 #include <vector>
 
+#include "sunshine/utility.h"
+
+KITTY_USING_MOVE_T(file_t, int, -1, {
+  if(el >= 0) {
+    close(el);
+  }
+});
+
 namespace dyn {
 typedef void (*apiproc)(void);
 
diff --git a/sunshine/platform/linux/publish.cpp b/sunshine/platform/linux/publish.cpp
index 05208cbb..825f3740 100644
--- a/sunshine/platform/linux/publish.cpp
+++ b/sunshine/platform/linux/publish.cpp
@@ -426,4 +426,4 @@ public:
 
   return std::make_unique<deinit_t>(std::thread { avahi::simple_poll_loop, poll.get() });
 }
-}; // namespace platf::publish
\ No newline at end of file
+} // namespace platf::publish
\ No newline at end of file
diff --git a/sunshine/platform/linux/vaapi.cpp b/sunshine/platform/linux/vaapi.cpp
index c9d0426b..c9071696 100644
--- a/sunshine/platform/linux/vaapi.cpp
+++ b/sunshine/platform/linux/vaapi.cpp
@@ -4,42 +4,21 @@
 #include <fcntl.h>
 
 #include <glad/egl.h>
-#include <glad/gl.h>
 
 extern "C" {
 #include <libavcodec/avcodec.h>
 }
 
+#include "graphics.h"
 #include "misc.h"
 #include "sunshine/config.h"
 #include "sunshine/main.h"
 #include "sunshine/platform/common.h"
 #include "sunshine/utility.h"
-#include "sunshine/video.h"
-
-// I want to have as little build dependencies as possible
-// There aren't that many DRM_FORMAT I need to use, so define them here
-//
-// They aren't likely to change any time soon.
-#define fourcc_code(a, b, c, d) ((std::uint32_t)(a) | ((std::uint32_t)(b) << 8) | \
-                                 ((std::uint32_t)(c) << 16) | ((std::uint32_t)(d) << 24))
-#define DRM_FORMAT_R8 fourcc_code('R', '8', ' ', ' ')   /* [7:0] R */
-#define DRM_FORMAT_GR88 fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */
-
-
-#define SUNSHINE_SHADERS_DIR SUNSHINE_ASSETS_DIR "/shaders/opengl"
-
-#define STRINGIFY(x) #x
-#define gl_drain_errors_helper(x) gl::drain_errors("line " STRINGIFY(x))
-#define gl_drain_errors gl_drain_errors_helper(__LINE__)
 
 using namespace std::literals;
 
-static void free_frame(AVFrame *frame) {
-  av_frame_free(&frame);
-}
-
-using frame_t = util::safe_ptr<AVFrame, free_frame>;
+extern "C" struct AVBufferRef;
 
 namespace va {
 constexpr auto SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME_2 = 0x40000000;
@@ -95,6 +74,119 @@ struct DRMPRIMESurfaceDescriptor {
   } layers[4];
 };
 
+/** Currently defined profiles */
+enum class profile_e {
+  // Profile ID used for video processing.
+  ProfileNone             = -1,
+  MPEG2Simple             = 0,
+  MPEG2Main               = 1,
+  MPEG4Simple             = 2,
+  MPEG4AdvancedSimple     = 3,
+  MPEG4Main               = 4,
+  H264Baseline            = 5,
+  H264Main                = 6,
+  H264High                = 7,
+  VC1Simple               = 8,
+  VC1Main                 = 9,
+  VC1Advanced             = 10,
+  H263Baseline            = 11,
+  JPEGBaseline            = 12,
+  H264ConstrainedBaseline = 13,
+  VP8Version0_3           = 14,
+  H264MultiviewHigh       = 15,
+  H264StereoHigh          = 16,
+  HEVCMain                = 17,
+  HEVCMain10              = 18,
+  VP9Profile0             = 19,
+  VP9Profile1             = 20,
+  VP9Profile2             = 21,
+  VP9Profile3             = 22,
+  HEVCMain12              = 23,
+  HEVCMain422_10          = 24,
+  HEVCMain422_12          = 25,
+  HEVCMain444             = 26,
+  HEVCMain444_10          = 27,
+  HEVCMain444_12          = 28,
+  HEVCSccMain             = 29,
+  HEVCSccMain10           = 30,
+  HEVCSccMain444          = 31,
+  AV1Profile0             = 32,
+  AV1Profile1             = 33,
+  HEVCSccMain444_10       = 34,
+
+  // Profile ID used for protected video playback.
+  Protected = 35
+};
+
+enum class entry_e {
+  VLD        = 1,
+  IZZ        = 2,
+  IDCT       = 3,
+  MoComp     = 4,
+  Deblocking = 5,
+  EncSlice   = 6, /* slice level encode */
+  EncPicture = 7, /* pictuer encode, JPEG, etc */
+  /*
+     * For an implementation that supports a low power/high performance variant
+     * for slice level encode, it can choose to expose the
+     * VAEntrypointEncSliceLP entrypoint. Certain encoding tools may not be
+     * available with this entrypoint (e.g. interlace, MBAFF) and the
+     * application can query the encoding configuration attributes to find
+     * out more details if this entrypoint is supported.
+     */
+  EncSliceLP = 8,
+  VideoProc  = 10, /**< Video pre/post-processing. */
+  /**
+     * \brief FEI
+     *
+     * The purpose of FEI (Flexible Encoding Infrastructure) is to allow applications to
+     * have more controls and trade off quality for speed with their own IPs.
+     * The application can optionally provide input to ENC for extra encode control
+     * and get the output from ENC. Application can chose to modify the ENC
+     * output/PAK input during encoding, but the performance impact is significant.
+     *
+     * On top of the existing buffers for normal encode, there will be
+     * one extra input buffer (VAEncMiscParameterFEIFrameControl) and
+     * three extra output buffers (VAEncFEIMVBufferType, VAEncFEIMBModeBufferType
+     * and VAEncFEIDistortionBufferType) for FEI entry function.
+     * If separate PAK is set, two extra input buffers
+     * (VAEncFEIMVBufferType, VAEncFEIMBModeBufferType) are needed for PAK input.
+     **/
+  FEI = 11,
+  /**
+     * \brief Stats
+     *
+     * A pre-processing function for getting some statistics and motion vectors is added,
+     * and some extra controls for Encode pipeline are provided. The application can
+     * optionally call the statistics function to get motion vectors and statistics like
+     * variances, distortions before calling Encode function via this entry point.
+     *
+     * Checking whether Statistics is supported can be performed with vaQueryConfigEntrypoints().
+     * If Statistics entry point is supported, then the list of returned entry-points will
+     * include #Stats. Supported pixel format, maximum resolution and statistics
+     * specific attributes can be obtained via normal attribute query. One input buffer
+     * (VAStatsStatisticsParameterBufferType) and one or two output buffers
+     * (VAStatsStatisticsBufferType, VAStatsStatisticsBottomFieldBufferType (for interlace only)
+     * and VAStatsMVBufferType) are needed for this entry point.
+     **/
+  Stats = 12,
+  /**
+     * \brief ProtectedTEEComm
+     *
+     * A function for communicating with TEE (Trusted Execution Environment).
+     **/
+  ProtectedTEEComm = 13,
+  /**
+     * \brief ProtectedContent
+     *
+     * A function for protected content to decrypt encrypted content.
+     **/
+  ProtectedContent = 14,
+};
+
+
+typedef VAStatus (*queryConfigEntrypoints_fn)(VADisplay dpy, profile_e profile, entry_e *entrypoint_list, int *num_entrypoints);
+typedef int (*maxNumEntrypoints_fn)(VADisplay dpy);
 typedef VADisplay (*getDisplayDRM_fn)(int fd);
 typedef VAStatus (*terminate_fn)(VADisplay dpy);
 typedef VAStatus (*initialize_fn)(VADisplay dpy, int *major_version, int *minor_version);
@@ -108,18 +200,20 @@ typedef VAStatus (*exportSurfaceHandle_fn)(
   uint32_t mem_type, uint32_t flags,
   void *descriptor);
 
-getDisplayDRM_fn getDisplayDRM;
-terminate_fn terminate;
-initialize_fn initialize;
-errorStr_fn errorStr;
-setErrorCallback_fn setErrorCallback;
-setInfoCallback_fn setInfoCallback;
-queryVendorString_fn queryVendorString;
-exportSurfaceHandle_fn exportSurfaceHandle;
+static maxNumEntrypoints_fn maxNumEntrypoints;
+static queryConfigEntrypoints_fn queryConfigEntrypoints;
+static getDisplayDRM_fn getDisplayDRM;
+static terminate_fn terminate;
+static initialize_fn initialize;
+static errorStr_fn errorStr;
+static setErrorCallback_fn setErrorCallback;
+static setInfoCallback_fn setInfoCallback;
+static queryVendorString_fn queryVendorString;
+static exportSurfaceHandle_fn exportSurfaceHandle;
 
 using display_t = util::dyn_safe_ptr_v2<void, VAStatus, &terminate>;
 
-int init() {
+int init_main_va() {
   static void *handle { nullptr };
   static bool funcs_loaded = false;
 
@@ -133,6 +227,8 @@ int init() {
   }
 
   std::vector<std::tuple<dyn::apiproc *, const char *>> funcs {
+    { (dyn::apiproc *)&maxNumEntrypoints, "vaMaxNumEntrypoints" },
+    { (dyn::apiproc *)&queryConfigEntrypoints, "vaQueryConfigEntrypoints" },
     { (dyn::apiproc *)&terminate, "vaTerminate" },
     { (dyn::apiproc *)&initialize, "vaInitialize" },
     { (dyn::apiproc *)&errorStr, "vaErrorStr" },
@@ -150,8 +246,8 @@ int init() {
   return 0;
 }
 
-int init_drm() {
-  if(init()) {
+int init() {
+  if(init_main_va()) {
     return -1;
   }
 
@@ -178,716 +274,43 @@ int init_drm() {
   funcs_loaded = true;
   return 0;
 }
-} // namespace va
-
-namespace gbm {
-struct device;
-typedef void (*device_destroy_fn)(device *gbm);
-typedef device *(*create_device_fn)(int fd);
-
-device_destroy_fn device_destroy;
-create_device_fn create_device;
-
-int init() {
-  static void *handle { nullptr };
-  static bool funcs_loaded = false;
-
-  if(funcs_loaded) return 0;
-
-  if(!handle) {
-    handle = dyn::handle({ "libgbm.so.1", "libgbm.so" });
-    if(!handle) {
-      return -1;
-    }
-  }
-
-  std::vector<std::tuple<GLADapiproc *, const char *>> funcs {
-    { (GLADapiproc *)&device_destroy, "gbm_device_destroy" },
-    { (GLADapiproc *)&create_device, "gbm_create_device" },
-  };
-
-  if(dyn::load(handle, funcs)) {
-    return -1;
-  }
-
-  funcs_loaded = true;
-  return 0;
-}
-
-} // namespace gbm
-
-namespace gl {
-static GladGLContext ctx;
-
-void drain_errors(const std::string_view &prefix) {
-  GLenum err;
-  while((err = ctx.GetError()) != GL_NO_ERROR) {
-    BOOST_LOG(error) << "GL: "sv << prefix << ": ["sv << util::hex(err).to_string_view() << ']';
-  }
-}
-
-class tex_t : public util::buffer_t<GLuint> {
-  using util::buffer_t<GLuint>::buffer_t;
-
-public:
-  tex_t(tex_t &&) = default;
-  tex_t &operator=(tex_t &&) = default;
-
-  ~tex_t() {
-    if(!size() == 0) {
-      ctx.DeleteTextures(size(), begin());
-    }
-  }
-
-  static tex_t make(std::size_t count) {
-    tex_t textures { count };
-
-    ctx.GenTextures(textures.size(), textures.begin());
-
-    float color[] = { 0.0f, 0.0f, 0.0f, 1.0f };
-
-    for(auto tex : textures) {
-      gl::ctx.BindTexture(GL_TEXTURE_2D, tex);
-      gl::ctx.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); // x
-      gl::ctx.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); // y
-      gl::ctx.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-      gl::ctx.TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-      gl::ctx.TexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, color);
-    }
-
-    return textures;
-  }
-};
-
-class frame_buf_t : public util::buffer_t<GLuint> {
-  using util::buffer_t<GLuint>::buffer_t;
-
-public:
-  frame_buf_t(frame_buf_t &&) = default;
-  frame_buf_t &operator=(frame_buf_t &&) = default;
-
-  ~frame_buf_t() {
-    if(begin()) {
-      ctx.DeleteFramebuffers(size(), begin());
-    }
-  }
-
-  static frame_buf_t make(std::size_t count) {
-    frame_buf_t frame_buf { count };
-
-    ctx.GenFramebuffers(frame_buf.size(), frame_buf.begin());
-
-    return frame_buf;
-  }
-
-  template<class It>
-  void bind(It it_begin, It it_end) {
-    if(std::distance(it_begin, it_end) > size()) {
-      BOOST_LOG(warning) << "To many elements to bind"sv;
-      return;
-    }
-
-    int x = 0;
-    std::for_each(it_begin, it_end, [&](auto tex) {
-      ctx.BindFramebuffer(GL_FRAMEBUFFER, (*this)[x]);
-      ctx.BindTexture(GL_TEXTURE_2D, tex);
-
-      ctx.FramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + x, tex, 0);
-
-      ++x;
-    });
-  }
-};
-
-class shader_t {
-  KITTY_USING_MOVE_T(shader_internal_t, GLuint, std::numeric_limits<GLuint>::max(), {
-    if(el != std::numeric_limits<GLuint>::max()) {
-      ctx.DeleteShader(el);
-    }
-  });
-
-public:
-  std::string err_str() {
-    int length;
-    ctx.GetShaderiv(handle(), GL_INFO_LOG_LENGTH, &length);
-
-    std::string string;
-    string.resize(length);
-
-    ctx.GetShaderInfoLog(handle(), length, &length, string.data());
-
-    string.resize(length - 1);
-
-    return string;
-  }
-
-  static util::Either<shader_t, std::string> compile(const std::string_view &source, GLenum type) {
-    shader_t shader;
-
-    auto data    = source.data();
-    GLint length = source.length();
-
-    shader._shader.el = ctx.CreateShader(type);
-    ctx.ShaderSource(shader.handle(), 1, &data, &length);
-    ctx.CompileShader(shader.handle());
-
-    int status = 0;
-    ctx.GetShaderiv(shader.handle(), GL_COMPILE_STATUS, &status);
-
-    if(!status) {
-      return shader.err_str();
-    }
-
-    return shader;
-  }
-
-  GLuint handle() const {
-    return _shader.el;
-  }
-
-private:
-  shader_internal_t _shader;
-};
-
-class buffer_t {
-  KITTY_USING_MOVE_T(buffer_internal_t, GLuint, std::numeric_limits<GLuint>::max(), {
-    if(el != std::numeric_limits<GLuint>::max()) {
-      ctx.DeleteBuffers(1, &el);
-    }
-  });
-
-public:
-  static buffer_t make(util::buffer_t<GLint> &&offsets, const char *block, const std::string_view &data) {
-    buffer_t buffer;
-    buffer._block   = block;
-    buffer._size    = data.size();
-    buffer._offsets = std::move(offsets);
-
-    ctx.GenBuffers(1, &buffer._buffer.el);
-    ctx.BindBuffer(GL_UNIFORM_BUFFER, buffer.handle());
-    ctx.BufferData(GL_UNIFORM_BUFFER, data.size(), (const std::uint8_t *)data.data(), GL_DYNAMIC_DRAW);
-
-    return buffer;
-  }
-
-  GLuint handle() const {
-    return _buffer.el;
-  }
-
-  const char *block() const {
-    return _block;
-  }
-
-  void update(const std::string_view &view, std::size_t offset = 0) {
-    ctx.BindBuffer(GL_UNIFORM_BUFFER, handle());
-    ctx.BufferSubData(GL_UNIFORM_BUFFER, offset, view.size(), (const void *)view.data());
-  }
-
-  void update(std::string_view *members, std::size_t count, std::size_t offset = 0) {
-    util::buffer_t<std::uint8_t> buffer { _size };
-
-    for(int x = 0; x < count; ++x) {
-      auto val = members[x];
-
-      std::copy_n((const std::uint8_t *)val.data(), val.size(), &buffer[_offsets[x]]);
-    }
-
-    update(util::view(buffer.begin(), buffer.end()), offset);
-  }
-
-private:
-  const char *_block;
-
-  std::size_t _size;
-
-  util::buffer_t<GLint> _offsets;
-
-  buffer_internal_t _buffer;
-};
-
-class program_t {
-  KITTY_USING_MOVE_T(program_internal_t, GLuint, std::numeric_limits<GLuint>::max(), {
-    if(el != std::numeric_limits<GLuint>::max()) {
-      ctx.DeleteProgram(el);
-    }
-  });
-
-public:
-  std::string err_str() {
-    int length;
-    ctx.GetProgramiv(handle(), GL_INFO_LOG_LENGTH, &length);
-
-    std::string string;
-    string.resize(length);
-
-    ctx.GetShaderInfoLog(handle(), length, &length, string.data());
-
-    string.resize(length - 1);
-
-    return string;
-  }
-
-  static util::Either<program_t, std::string> link(const shader_t &vert, const shader_t &frag) {
-    program_t program;
-
-    program._program.el = ctx.CreateProgram();
-
-    ctx.AttachShader(program.handle(), vert.handle());
-    ctx.AttachShader(program.handle(), frag.handle());
-
-    // p_handle stores a copy of the program handle, since program will be moved before
-    // the fail guard funcion is called.
-    auto fg = util::fail_guard([p_handle = program.handle(), &vert, &frag]() {
-      ctx.DetachShader(p_handle, vert.handle());
-      ctx.DetachShader(p_handle, frag.handle());
-    });
-
-    ctx.LinkProgram(program.handle());
-
-    int status = 0;
-    ctx.GetProgramiv(program.handle(), GL_LINK_STATUS, &status);
-
-    if(!status) {
-      return program.err_str();
-    }
-
-    return program;
-  }
-
-  void bind(const buffer_t &buffer) {
-    ctx.UseProgram(handle());
-    auto i = ctx.GetUniformBlockIndex(handle(), buffer.block());
-
-    ctx.BindBufferBase(GL_UNIFORM_BUFFER, i, buffer.handle());
-  }
-
-  std::optional<buffer_t> uniform(const char *block, std::pair<const char *, std::string_view> *members, std::size_t count) {
-    auto i = ctx.GetUniformBlockIndex(handle(), block);
-    if(i == GL_INVALID_INDEX) {
-      BOOST_LOG(error) << "Couldn't find index of ["sv << block << ']';
-      return std::nullopt;
-    }
-
-    int size;
-    ctx.GetActiveUniformBlockiv(handle(), i, GL_UNIFORM_BLOCK_DATA_SIZE, &size);
-
-    bool error_flag = false;
-
-    util::buffer_t<GLint> offsets { count };
-    auto indices = (std::uint32_t *)alloca(count * sizeof(std::uint32_t));
-    auto names   = (const char **)alloca(count * sizeof(const char *));
-    auto names_p = names;
-
-    std::for_each_n(members, count, [names_p](auto &member) mutable {
-      *names_p++ = std::get<0>(member);
-    });
-
-    std::fill_n(indices, count, GL_INVALID_INDEX);
-    ctx.GetUniformIndices(handle(), count, names, indices);
-
-    for(int x = 0; x < count; ++x) {
-      if(indices[x] == GL_INVALID_INDEX) {
-        error_flag = true;
-
-        BOOST_LOG(error) << "Couldn't find ["sv << block << '.' << members[x].first << ']';
-      }
-    }
-
-    if(error_flag) {
-      return std::nullopt;
-    }
-
-    ctx.GetActiveUniformsiv(handle(), count, indices, GL_UNIFORM_OFFSET, offsets.begin());
-    util::buffer_t<std::uint8_t> buffer { (std::size_t)size };
-
-    for(int x = 0; x < count; ++x) {
-      auto val = std::get<1>(members[x]);
-
-      std::copy_n((const std::uint8_t *)val.data(), val.size(), &buffer[offsets[x]]);
-    }
-
-    return buffer_t::make(std::move(offsets), block, std::string_view { (char *)buffer.begin(), buffer.size() });
-  }
-
-  GLuint handle() const {
-    return _program.el;
-  }
-
-private:
-  program_internal_t _program;
-};
-} // namespace gl
-
-namespace platf {
-namespace egl {
-
-constexpr auto EGL_LINUX_DMA_BUF_EXT         = 0x3270;
-constexpr auto EGL_LINUX_DRM_FOURCC_EXT      = 0x3271;
-constexpr auto EGL_DMA_BUF_PLANE0_FD_EXT     = 0x3272;
-constexpr auto EGL_DMA_BUF_PLANE0_OFFSET_EXT = 0x3273;
-constexpr auto EGL_DMA_BUF_PLANE0_PITCH_EXT  = 0x3274;
-
-using display_t = util::dyn_safe_ptr_v2<void, EGLBoolean, &eglTerminate>;
-using gbm_t     = util::dyn_safe_ptr<gbm::device, &gbm::device_destroy>;
 
 int vaapi_make_hwdevice_ctx(platf::hwdevice_t *base, AVBufferRef **hw_device_buf);
 
-KITTY_USING_MOVE_T(file_t, int, -1, {
-  if(el >= 0) {
-    close(el);
-  }
-});
-
-struct nv12_img_t {
-  display_t::pointer display;
-  EGLImage r8;
-  EGLImage bg88;
-
-  gl::tex_t tex;
-  gl::frame_buf_t buf;
-
-  static constexpr std::size_t num_fds =
-    sizeof(va::DRMPRIMESurfaceDescriptor::objects) / sizeof(va::DRMPRIMESurfaceDescriptor::objects[0]);
-
-  std::array<file_t, num_fds> fds;
-};
-
-KITTY_USING_MOVE_T(nv12_t, nv12_img_t, , {
-  if(el.r8) {
-    eglDestroyImageKHR(el.display, el.r8);
-  }
-
-  if(el.bg88) {
-    eglDestroyImageKHR(el.display, el.bg88);
-  }
-});
-
-KITTY_USING_MOVE_T(ctx_t, (std::tuple<display_t::pointer, EGLContext>), , {
-  TUPLE_2D_REF(disp, ctx, el);
-  if(ctx) {
-    if(ctx == eglGetCurrentContext()) {
-      eglMakeCurrent(disp, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
-    }
-    eglDestroyContext(disp, ctx);
-  }
-});
-
-bool fail() {
-  return eglGetError() != EGL_SUCCESS;
-}
-
-class egl_t : public platf::hwdevice_t {
+class va_t : public platf::hwdevice_t {
 public:
-  std::optional<nv12_t> import(va::VASurfaceID surface) {
-    // No deallocation necessary
-    va::DRMPRIMESurfaceDescriptor prime;
+  int init(int in_width, int in_height, file_t &&render_device) {
+    file = std::move(render_device);
 
-    auto status = va::exportSurfaceHandle(
-      va_display,
-      surface,
-      va::SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME_2,
-      va::EXPORT_SURFACE_WRITE_ONLY | va::EXPORT_SURFACE_COMPOSED_LAYERS,
-      &prime);
-    if(status) {
-
-      BOOST_LOG(error) << "Couldn't export va surface handle: ["sv << (int)surface << "]: "sv << va::errorStr(status);
-
-      return std::nullopt;
-    }
-
-    // Keep track of file descriptors
-    std::array<file_t, nv12_img_t::num_fds> fds;
-    for(int x = 0; x < prime.num_objects; ++x) {
-      fds[x] = prime.objects[x].fd;
-    }
-
-    int img_attr_planes[2][13] {
-      { EGL_LINUX_DRM_FOURCC_EXT, DRM_FORMAT_R8,
-        EGL_WIDTH, (int)prime.width,
-        EGL_HEIGHT, (int)prime.height,
-        EGL_DMA_BUF_PLANE0_FD_EXT, prime.objects[prime.layers[0].object_index[0]].fd,
-        EGL_DMA_BUF_PLANE0_OFFSET_EXT, (int)prime.layers[0].offset[0],
-        EGL_DMA_BUF_PLANE0_PITCH_EXT, (int)prime.layers[0].pitch[0],
-        EGL_NONE },
-
-      { EGL_LINUX_DRM_FOURCC_EXT, DRM_FORMAT_GR88,
-        EGL_WIDTH, (int)prime.width / 2,
-        EGL_HEIGHT, (int)prime.height / 2,
-        EGL_DMA_BUF_PLANE0_FD_EXT, prime.objects[prime.layers[0].object_index[1]].fd,
-        EGL_DMA_BUF_PLANE0_OFFSET_EXT, (int)prime.layers[0].offset[1],
-        EGL_DMA_BUF_PLANE0_PITCH_EXT, (int)prime.layers[0].pitch[1],
-        EGL_NONE },
-    };
-
-    nv12_t nv12 {
-      display.get(),
-      eglCreateImageKHR(display.get(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, nullptr, img_attr_planes[0]),
-      eglCreateImageKHR(display.get(), EGL_NO_CONTEXT, EGL_LINUX_DMA_BUF_EXT, nullptr, img_attr_planes[1]),
-      gl::tex_t::make(2),
-      gl::frame_buf_t::make(2),
-      std::move(fds)
-    };
-
-    if(!nv12->r8 || !nv12->bg88) {
-      BOOST_LOG(error) << "Couldn't create KHR Image"sv;
-
-      return std::nullopt;
-    }
-
-    gl::ctx.BindTexture(GL_TEXTURE_2D, nv12->tex[0]);
-    gl::ctx.EGLImageTargetTexture2DOES(GL_TEXTURE_2D, nv12->r8);
-
-    gl::ctx.BindTexture(GL_TEXTURE_2D, nv12->tex[1]);
-    gl::ctx.EGLImageTargetTexture2DOES(GL_TEXTURE_2D, nv12->bg88);
-
-    nv12->buf.bind(std::begin(nv12->tex), std::end(nv12->tex));
-
-    gl_drain_errors;
-
-    return nv12;
-  }
-
-  void set_colorspace(std::uint32_t colorspace, std::uint32_t color_range) override {
-    video::color_t *color_p;
-    switch(colorspace) {
-    case 5: // SWS_CS_SMPTE170M
-      color_p = &video::colors[0];
-      break;
-    case 1: // SWS_CS_ITU709
-      color_p = &video::colors[2];
-      break;
-    case 9: // SWS_CS_BT2020
-    default:
-      BOOST_LOG(warning) << "Colorspace: ["sv << colorspace << "] not yet supported: switching to default"sv;
-      color_p = &video::colors[0];
-    };
-
-    if(color_range > 1) {
-      // Full range
-      ++color_p;
-    }
-
-    std::string_view members[] {
-      util::view(color_p->color_vec_y),
-      util::view(color_p->color_vec_u),
-      util::view(color_p->color_vec_v),
-      util::view(color_p->range_y),
-      util::view(color_p->range_uv),
-    };
-
-    color_matrix.update(members, sizeof(members) / sizeof(decltype(members[0])));
-  }
-
-  int init(int in_width, int in_height, const char *render_device) {
     if(!va::initialize || !gbm::create_device) {
       if(!va::initialize) BOOST_LOG(warning) << "libva not initialized"sv;
       if(!gbm::create_device) BOOST_LOG(warning) << "libgbm not initialized"sv;
       return -1;
     }
 
-    file.el = open(render_device, O_RDWR);
-
-    if(file.el < 0) {
-      char error_buf[1024];
-      BOOST_LOG(error) << "Couldn't open ["sv << render_device << "]: "sv << strerror_r(errno, error_buf, sizeof(error_buf));
-      return -1;
-    }
+    this->data = (void *)vaapi_make_hwdevice_ctx;
 
     gbm.reset(gbm::create_device(file.el));
     if(!gbm) {
-      BOOST_LOG(error) << "Couldn't create GBM device: ["sv << util::hex(eglGetError()).to_string_view() << ']';
+      char string[1024];
+      BOOST_LOG(error) << "Couldn't create GBM device: ["sv << strerror_r(errno, string, sizeof(string)) << ']';
       return -1;
     }
 
-    constexpr auto EGL_PLATFORM_GBM_MESA = 0x31D7;
-
-    display.reset(eglGetPlatformDisplay(EGL_PLATFORM_GBM_MESA, gbm.get(), nullptr));
-    if(fail()) {
-      BOOST_LOG(error) << "Couldn't open EGL display: ["sv << util::hex(eglGetError()).to_string_view() << ']';
+    display = egl::make_display(gbm.get());
+    if(!display) {
       return -1;
     }
 
-    int major, minor;
-    if(!eglInitialize(display.get(), &major, &minor)) {
-      BOOST_LOG(error) << "Couldn't initialize EGL display: ["sv << util::hex(eglGetError()).to_string_view() << ']';
+    auto ctx_opt = egl::make_ctx(display.get());
+    if(!ctx_opt) {
       return -1;
     }
 
-    const char *extension_st = eglQueryString(display.get(), EGL_EXTENSIONS);
-    const char *version      = eglQueryString(display.get(), EGL_VERSION);
-    const char *vendor       = eglQueryString(display.get(), EGL_VENDOR);
-    const char *apis         = eglQueryString(display.get(), EGL_CLIENT_APIS);
+    ctx = std::move(*ctx_opt);
 
-    BOOST_LOG(debug) << "EGL: ["sv << vendor << "]: version ["sv << version << ']';
-    BOOST_LOG(debug) << "API's supported: ["sv << apis << ']';
-
-    const char *extensions[] {
-      "EGL_KHR_create_context",
-      "EGL_KHR_surfaceless_context",
-      "EGL_EXT_image_dma_buf_import",
-      "EGL_KHR_image_pixmap"
-    };
-
-    for(auto ext : extensions) {
-      if(!std::strstr(extension_st, ext)) {
-        BOOST_LOG(error) << "Missing extension: ["sv << ext << ']';
-        return -1;
-      }
-    }
-
-    constexpr int conf_attr[] {
-      EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT, EGL_NONE
-    };
-
-    int count;
-    EGLConfig conf;
-    if(!eglChooseConfig(display.get(), conf_attr, &conf, 1, &count)) {
-      BOOST_LOG(error) << "Couldn't set config attributes: ["sv << util::hex(eglGetError()).to_string_view() << ']';
-      return -1;
-    }
-
-    if(!eglBindAPI(EGL_OPENGL_API)) {
-      BOOST_LOG(error) << "Couldn't bind API: ["sv << util::hex(eglGetError()).to_string_view() << ']';
-      return -1;
-    }
-
-    constexpr int attr[] {
-      EGL_CONTEXT_CLIENT_VERSION, 3, EGL_NONE
-    };
-
-    ctx.el = { display.get(), eglCreateContext(display.get(), conf, EGL_NO_CONTEXT, attr) };
-    if(fail()) {
-      BOOST_LOG(error) << "Couldn't create EGL context: ["sv << util::hex(eglGetError()).to_string_view() << ']';
-      return -1;
-    }
-
-    TUPLE_EL_REF(ctx_p, 1, ctx.el);
-    if(!eglMakeCurrent(display.get(), EGL_NO_SURFACE, EGL_NO_SURFACE, ctx_p)) {
-      BOOST_LOG(error) << "Couldn't make current display"sv;
-      return -1;
-    }
-
-    if(!gladLoadGLContext(&gl::ctx, eglGetProcAddress)) {
-      BOOST_LOG(error) << "Couldn't load OpenGL library"sv;
-      return -1;
-    }
-
-    BOOST_LOG(debug) << "GL: vendor: "sv << gl::ctx.GetString(GL_VENDOR);
-    BOOST_LOG(debug) << "GL: renderer: "sv << gl::ctx.GetString(GL_RENDERER);
-    BOOST_LOG(debug) << "GL: version: "sv << gl::ctx.GetString(GL_VERSION);
-    BOOST_LOG(debug) << "GL: shader: "sv << gl::ctx.GetString(GL_SHADING_LANGUAGE_VERSION);
-
-    gl::ctx.PixelStorei(GL_UNPACK_ALIGNMENT, 1);
-
-    {
-      const char *sources[] {
-        SUNSHINE_SHADERS_DIR "/ConvertUV.frag",
-        SUNSHINE_SHADERS_DIR "/ConvertUV.vert",
-        SUNSHINE_SHADERS_DIR "/ConvertY.frag",
-        SUNSHINE_SHADERS_DIR "/Scene.vert",
-        SUNSHINE_SHADERS_DIR "/Scene.frag",
-      };
-
-      GLenum shader_type[2] {
-        GL_FRAGMENT_SHADER,
-        GL_VERTEX_SHADER,
-      };
-
-      constexpr auto count = sizeof(sources) / sizeof(const char *);
-
-      util::Either<gl::shader_t, std::string> compiled_sources[count];
-
-      bool error_flag = false;
-      for(int x = 0; x < count; ++x) {
-        auto &compiled_source = compiled_sources[x];
-
-        compiled_source = gl::shader_t::compile(read_file(sources[x]), shader_type[x % 2]);
-        gl_drain_errors;
-
-        if(compiled_source.has_right()) {
-          BOOST_LOG(error) << sources[x] << ": "sv << compiled_source.right();
-          error_flag = true;
-        }
-      }
-
-      if(error_flag) {
-        return -1;
-      }
-
-      auto program = gl::program_t::link(compiled_sources[1].left(), compiled_sources[0].left());
-      if(program.has_right()) {
-        BOOST_LOG(error) << "GL linker: "sv << program.right();
-        return -1;
-      }
-
-      // UV - shader
-      this->program[1] = std::move(program.left());
-
-      program = gl::program_t::link(compiled_sources[3].left(), compiled_sources[2].left());
-      if(program.has_right()) {
-        BOOST_LOG(error) << "GL linker: "sv << program.right();
-        return -1;
-      }
-
-      // Y - shader
-      this->program[0] = std::move(program.left());
-    }
-
-    auto color_p = &video::colors[0];
-    std::pair<const char *, std::string_view> members[] {
-      std::make_pair("color_vec_y", util::view(color_p->color_vec_y)),
-      std::make_pair("color_vec_u", util::view(color_p->color_vec_u)),
-      std::make_pair("color_vec_v", util::view(color_p->color_vec_v)),
-      std::make_pair("range_y", util::view(color_p->range_y)),
-      std::make_pair("range_uv", util::view(color_p->range_uv)),
-    };
-
-    auto color_matrix = program[0].uniform("ColorMatrix", members, sizeof(members) / sizeof(decltype(members[0])));
-    if(!color_matrix) {
-      return -1;
-    }
-
-    this->color_matrix = std::move(*color_matrix);
-
-    tex_in = gl::tex_t::make(1);
-
-    this->in_width  = in_width;
-    this->in_height = in_height;
-
-    data = (void *)vaapi_make_hwdevice_ctx;
-    gl_drain_errors;
-    return 0;
-  }
-
-  int convert(platf::img_t &img) override {
-    auto tex = tex_in[0];
-
-    gl::ctx.BindTexture(GL_TEXTURE_2D, tex);
-    gl::ctx.TexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, in_width, in_height, GL_BGRA, GL_UNSIGNED_BYTE, img.data);
-
-    GLenum attachments[] {
-      GL_COLOR_ATTACHMENT0,
-      GL_COLOR_ATTACHMENT1
-    };
-
-    for(int x = 0; x < sizeof(attachments) / sizeof(decltype(attachments[0])); ++x) {
-      gl::ctx.BindFramebuffer(GL_FRAMEBUFFER, nv12->buf[x]);
-      gl::ctx.DrawBuffers(1, &attachments[x]);
-
-      auto status = gl::ctx.CheckFramebufferStatus(GL_FRAMEBUFFER);
-      if(status != GL_FRAMEBUFFER_COMPLETE) {
-        BOOST_LOG(error) << "Pass "sv << x << ": CheckFramebufferStatus() --> [0x"sv << util::hex(status).to_string_view() << ']';
-        return -1;
-      }
-
-      gl::ctx.BindTexture(GL_TEXTURE_2D, tex);
-
-      gl::ctx.UseProgram(program[x].handle());
-      program[x].bind(color_matrix);
-
-      gl::ctx.Viewport(offsetX / (x + 1), offsetY / (x + 1), out_width / (x + 1), out_height / (x + 1));
-      gl::ctx.DrawArrays(GL_TRIANGLES, 0, 3);
-    }
+    width  = in_width;
+    height = in_height;
 
     return 0;
   }
@@ -902,72 +325,126 @@ public:
       return -1;
     }
 
+    va::DRMPRIMESurfaceDescriptor prime;
     va::VASurfaceID surface = (std::uintptr_t)frame->data[3];
 
-    auto nv12_opt = import(surface);
+    auto status = va::exportSurfaceHandle(
+      this->va_display,
+      surface,
+      va::SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME_2,
+      va::EXPORT_SURFACE_WRITE_ONLY | va::EXPORT_SURFACE_COMPOSED_LAYERS,
+      &prime);
+    if(status) {
+
+      BOOST_LOG(error) << "Couldn't export va surface handle: ["sv << (int)surface << "]: "sv << va::errorStr(status);
+
+      return -1;
+    }
+
+    // Keep track of file descriptors
+    std::array<file_t, egl::nv12_img_t::num_fds> fds;
+    for(int x = 0; x < prime.num_objects; ++x) {
+      fds[x] = prime.objects[x].fd;
+    }
+
+    auto nv12_opt = egl::import_target(
+      display.get(),
+      std::move(fds),
+      {
+        prime.objects[prime.layers[0].object_index[0]].fd,
+        (int)prime.width,
+        (int)prime.height,
+        (int)prime.layers[0].offset[0],
+        (int)prime.layers[0].pitch[0],
+      },
+      {
+        prime.objects[prime.layers[0].object_index[1]].fd,
+        (int)prime.width / 2,
+        (int)prime.height / 2,
+        (int)prime.layers[0].offset[1],
+        (int)prime.layers[0].pitch[1],
+      });
+
     if(!nv12_opt) {
       return -1;
     }
 
-    nv12 = std::move(*nv12_opt);
-
-    // // Ensure aspect ratio is maintained
-    auto scalar       = std::fminf(frame->width / (float)in_width, frame->height / (float)in_height);
-    auto out_width_f  = in_width * scalar;
-    auto out_height_f = in_height * scalar;
-
-    // result is always positive
-    auto offsetX_f = (frame->width - out_width_f) / 2;
-    auto offsetY_f = (frame->height - out_height_f) / 2;
-
-    out_width  = out_width_f;
-    out_height = out_height_f;
-
-    offsetX = offsetX_f;
-    offsetY = offsetY_f;
-
-    auto tex = tex_in[0];
-
-    gl::ctx.BindTexture(GL_TEXTURE_2D, tex);
-    gl::ctx.TexStorage2D(GL_TEXTURE_2D, 1, GL_RGBA8, in_width, in_height);
-
-    auto loc_width_i = gl::ctx.GetUniformLocation(program[1].handle(), "width_i");
-    if(loc_width_i < 0) {
-      BOOST_LOG(error) << "Couldn't find uniform [width_i]"sv;
+    auto sws_opt = egl::sws_t::make(width, height, frame->width, frame->height);
+    if(!sws_opt) {
       return -1;
     }
 
-    auto width_i = 1.0f / out_width;
-    gl::ctx.UseProgram(program[1].handle());
-    gl::ctx.Uniform1fv(loc_width_i, 1, &width_i);
+    this->sws  = std::move(*sws_opt);
+    this->nv12 = std::move(*nv12_opt);
 
-    gl_drain_errors;
     return 0;
   }
 
-  ~egl_t() override {
-    if(gl::ctx.GetError) {
-      gl_drain_errors;
-    }
+  void set_colorspace(std::uint32_t colorspace, std::uint32_t color_range) override {
+    sws.set_colorspace(colorspace, color_range);
   }
 
-  int in_width, in_height;
-  int out_width, out_height;
-  int offsetX, offsetY;
+  va::display_t::pointer va_display;
+  file_t file;
 
   frame_t hwframe;
 
-  va::display_t::pointer va_display;
+  gbm::gbm_t gbm;
+  egl::display_t display;
+  egl::ctx_t ctx;
 
-  file_t file;
-  gbm_t gbm;
-  display_t display;
-  ctx_t ctx;
+  egl::sws_t sws;
+  egl::nv12_t nv12;
 
-  gl::tex_t tex_in;
-  nv12_t nv12;
-  gl::program_t program[2];
-  gl::buffer_t color_matrix;
+  int width, height;
+};
+
+class va_ram_t : public va_t {
+public:
+  int convert(platf::img_t &img) override {
+    sws.load_ram(img);
+
+    sws.convert(nv12);
+    return 0;
+  }
+};
+
+class va_vram_t : public va_t {
+public:
+  int convert(platf::img_t &img) override {
+    sws.load_vram((egl::cursor_t &)img, offset_x, offset_y, framebuffer[0]);
+
+    sws.convert(nv12);
+    return 0;
+  }
+
+  int init(int in_width, int in_height, file_t &&render_device, int offset_x, int offset_y, const egl::surface_descriptor_t &sd) {
+    if(va_t::init(in_width, in_height, std::move(render_device))) {
+      return -1;
+    }
+
+    auto rgb_opt = egl::import_source(display.get(), sd);
+    if(!rgb_opt) {
+      return -1;
+    }
+
+    rgb = std::move(*rgb_opt);
+
+    framebuffer = gl::frame_buf_t::make(1);
+    framebuffer.bind(std::begin(rgb->tex), std::end(rgb->tex));
+
+    this->offset_x = offset_x;
+    this->offset_y = offset_y;
+
+    return 0;
+  }
+
+  file_t fb_fd;
+
+  egl::rgb_t rgb;
+  gl::frame_buf_t framebuffer;
+
+  int offset_x, offset_y;
 };
 
 /**
@@ -1019,8 +496,8 @@ int vaapi_make_hwdevice_ctx(platf::hwdevice_t *base, AVBufferRef **hw_device_buf
     return -1;
   }
 
-  auto egl = (platf::egl::egl_t *)base;
-  auto fd  = dup(egl->file.el);
+  auto va = (va::va_t *)base;
+  auto fd = dup(va->file.el);
 
   auto *priv   = (VAAPIDevicePriv *)av_mallocz(sizeof(VAAPIDevicePriv));
   priv->drm_fd = fd;
@@ -1039,7 +516,7 @@ int vaapi_make_hwdevice_ctx(platf::hwdevice_t *base, AVBufferRef **hw_device_buf
     return -1;
   }
 
-  egl->va_display = display.get();
+  va->va_display = display.get();
 
   va::setErrorCallback(display.get(), __log, &error);
   va::setErrorCallback(display.get(), __log, &info);
@@ -1070,26 +547,91 @@ int vaapi_make_hwdevice_ctx(platf::hwdevice_t *base, AVBufferRef **hw_device_buf
   return 0;
 }
 
-std::shared_ptr<platf::hwdevice_t> make_hwdevice(int width, int height) {
-  auto egl = std::make_shared<egl_t>();
+static bool query(display_t::pointer display, profile_e profile) {
+  std::vector<entry_e> entrypoints;
+  entrypoints.resize(maxNumEntrypoints(display));
 
+  int count;
+  auto status = queryConfigEntrypoints(display, profile, entrypoints.data(), &count);
+  if(status) {
+    BOOST_LOG(error) << "Couldn't query entrypoints: "sv << va::errorStr(status);
+    return false;
+  }
+  entrypoints.resize(count);
+
+  for(auto entrypoint : entrypoints) {
+    if(entrypoint == entry_e::EncSlice || entrypoint == entry_e::EncSliceLP) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+bool validate(int fd) {
+  if(init()) {
+    return false;
+  }
+
+  va::display_t display { va::getDisplayDRM(fd) };
+  if(!display) {
+    char string[1024];
+
+    auto bytes = readlink(("/proc/self/fd/" + std::to_string(fd)).c_str(), string, sizeof(string));
+
+    std::string_view render_device { string, (std::size_t)bytes };
+
+    BOOST_LOG(error) << "Couldn't open a va display from DRM with device: "sv << render_device;
+    return false;
+  }
+
+  int major, minor;
+  auto status = initialize(display.get(), &major, &minor);
+  if(status) {
+    BOOST_LOG(error) << "Couldn't initialize va display: "sv << va::errorStr(status);
+    return false;
+  }
+
+  if(!query(display.get(), profile_e::H264Main)) {
+    return false;
+  }
+
+  if(config::video.hevc_mode > 1 && !query(display.get(), profile_e::HEVCMain)) {
+    return false;
+  }
+
+  if(config::video.hevc_mode > 2 && !query(display.get(), profile_e::HEVCMain10)) {
+    return false;
+  }
+
+  return true;
+}
+
+std::shared_ptr<platf::hwdevice_t> make_hwdevice(int width, int height) {
   auto render_device = config::video.adapter_name.empty() ? "/dev/dri/renderD128" : config::video.adapter_name.c_str();
-  if(egl->init(width, height, render_device)) {
+
+  file_t file = open(render_device, O_RDWR);
+  if(file.el < 0) {
+    char string[1024];
+    BOOST_LOG(error) << "Couldn't open "sv << render_device << ": " << strerror_r(errno, string, sizeof(string));
+
+    return nullptr;
+  }
+
+  auto egl = std::make_shared<va::va_ram_t>();
+  if(egl->init(width, height, std::move(file))) {
     return nullptr;
   }
 
   return egl;
 }
-} // namespace egl
 
-std::unique_ptr<deinit_t> init() {
-  gbm::init();
-  va::init_drm();
-
-  if(!gladLoaderLoadEGL(EGL_NO_DISPLAY) || !eglGetPlatformDisplay) {
-    BOOST_LOG(warning) << "Couldn't load EGL library"sv;
+std::shared_ptr<platf::hwdevice_t> make_hwdevice(int width, int height, file_t &&card, int offset_x, int offset_y, const egl::surface_descriptor_t &sd) {
+  auto egl = std::make_shared<va::va_vram_t>();
+  if(egl->init(width, height, std::move(card), offset_x, offset_y, sd)) {
+    return nullptr;
   }
 
-  return std::make_unique<deinit_t>();
+  return egl;
 }
-} // namespace platf
\ No newline at end of file
+} // namespace va
\ No newline at end of file
diff --git a/sunshine/platform/linux/vaapi.h b/sunshine/platform/linux/vaapi.h
index 10b1b3f1..a7165166 100644
--- a/sunshine/platform/linux/vaapi.h
+++ b/sunshine/platform/linux/vaapi.h
@@ -1,8 +1,19 @@
-#ifndef SUNSHINE_DISPLAY_H
-#define SUNSHINE_DISPLAY_H
+#ifndef SUNSHINE_VAAPI_H
+#define SUNSHINE_VAAPI_H
 
+#include "misc.h"
 #include "sunshine/platform/common.h"
-namespace platf::egl {
-std::shared_ptr<hwdevice_t> make_hwdevice(int width, int height);
-} // namespace platf::egl
+
+namespace egl {
+struct surface_descriptor_t;
+}
+namespace va {
+std::shared_ptr<platf::hwdevice_t> make_hwdevice(int width, int height);
+std::shared_ptr<platf::hwdevice_t> make_hwdevice(int width, int height, file_t &&card, int offset_x, int offset_y, const egl::surface_descriptor_t &sd);
+
+// Ensure the render device pointed to by fd is capable of encoding h264
+bool validate(int fd);
+
+int init();
+} // namespace va
 #endif
\ No newline at end of file
diff --git a/sunshine/platform/linux/display.cpp b/sunshine/platform/linux/x11grab.cpp
similarity index 52%
rename from sunshine/platform/linux/display.cpp
rename to sunshine/platform/linux/x11grab.cpp
index 133e5905..8d4f2b4f 100644
--- a/sunshine/platform/linux/display.cpp
+++ b/sunshine/platform/linux/x11grab.cpp
@@ -20,25 +20,252 @@
 #include "sunshine/main.h"
 #include "sunshine/task_pool.h"
 
+#include "graphics.h"
+#include "misc.h"
 #include "vaapi.h"
+#include "x11grab.h"
 
 using namespace std::literals;
 
 namespace platf {
+int load_xcb();
+int load_x11();
+
+namespace x11 {
+#define _FN(x, ret, args)    \
+  typedef ret(*x##_fn) args; \
+  static x##_fn x
+
+_FN(GetImage, XImage *,
+  (
+    Display * display,
+    Drawable d,
+    int x, int y,
+    unsigned int width, unsigned int height,
+    unsigned long plane_mask,
+    int format));
+
+_FN(OpenDisplay, Display *, (_Xconst char *display_name));
+_FN(GetWindowAttributes, Status,
+  (
+    Display * display,
+    Window w,
+    XWindowAttributes *window_attributes_return));
+
+_FN(CloseDisplay, int, (Display * display));
+_FN(Free, int, (void *data));
+_FN(InitThreads, Status, (void));
+
+namespace rr {
+_FN(GetScreenResources, XRRScreenResources *, (Display * dpy, Window window));
+_FN(GetOutputInfo, XRROutputInfo *, (Display * dpy, XRRScreenResources *resources, RROutput output));
+_FN(GetCrtcInfo, XRRCrtcInfo *, (Display * dpy, XRRScreenResources *resources, RRCrtc crtc));
+_FN(FreeScreenResources, void, (XRRScreenResources * resources));
+_FN(FreeOutputInfo, void, (XRROutputInfo * outputInfo));
+_FN(FreeCrtcInfo, void, (XRRCrtcInfo * crtcInfo));
+
+int init() {
+  static void *handle { nullptr };
+  static bool funcs_loaded = false;
+
+  if(funcs_loaded) return 0;
+
+  if(!handle) {
+    handle = dyn::handle({ "libXrandr.so.2", "libXrandr.so" });
+    if(!handle) {
+      return -1;
+    }
+  }
+
+  std::vector<std::tuple<dyn::apiproc *, const char *>> funcs {
+    { (dyn::apiproc *)&GetScreenResources, "XRRGetScreenResources" },
+    { (dyn::apiproc *)&GetOutputInfo, "XRRGetOutputInfo" },
+    { (dyn::apiproc *)&GetCrtcInfo, "XRRGetCrtcInfo" },
+    { (dyn::apiproc *)&FreeScreenResources, "XRRFreeScreenResources" },
+    { (dyn::apiproc *)&FreeOutputInfo, "XRRFreeOutputInfo" },
+    { (dyn::apiproc *)&FreeCrtcInfo, "XRRFreeCrtcInfo" },
+  };
+
+  if(dyn::load(handle, funcs)) {
+    return -1;
+  }
+
+  funcs_loaded = true;
+  return 0;
+}
+
+} // namespace rr
+namespace fix {
+_FN(GetCursorImage, XFixesCursorImage *, (Display * dpy));
+
+int init() {
+  static void *handle { nullptr };
+  static bool funcs_loaded = false;
+
+  if(funcs_loaded) return 0;
+
+  if(!handle) {
+    handle = dyn::handle({ "libXfixes.so.3", "libXfixes.so" });
+    if(!handle) {
+      return -1;
+    }
+  }
+
+  std::vector<std::tuple<dyn::apiproc *, const char *>> funcs {
+    { (dyn::apiproc *)&GetCursorImage, "XFixesGetCursorImage" },
+  };
+
+  if(dyn::load(handle, funcs)) {
+    return -1;
+  }
+
+  funcs_loaded = true;
+  return 0;
+}
+} // namespace fix
+
+int init() {
+  static void *handle { nullptr };
+  static bool funcs_loaded = false;
+
+  if(funcs_loaded) return 0;
+
+  if(!handle) {
+    handle = dyn::handle({ "libX11.so.6", "libX11.so" });
+    if(!handle) {
+      return -1;
+    }
+  }
+
+  std::vector<std::tuple<dyn::apiproc *, const char *>> funcs {
+    { (dyn::apiproc *)&GetImage, "XGetImage" },
+    { (dyn::apiproc *)&OpenDisplay, "XOpenDisplay" },
+    { (dyn::apiproc *)&GetWindowAttributes, "XGetWindowAttributes" },
+    { (dyn::apiproc *)&Free, "XFree" },
+    { (dyn::apiproc *)&CloseDisplay, "XCloseDisplay" },
+    { (dyn::apiproc *)&InitThreads, "XInitThreads" },
+  };
+
+  if(dyn::load(handle, funcs)) {
+    return -1;
+  }
+
+  funcs_loaded = true;
+  return 0;
+}
+} // namespace x11
+
+namespace xcb {
+static xcb_extension_t *shm_id;
+
+_FN(shm_get_image_reply, xcb_shm_get_image_reply_t *,
+  (
+    xcb_connection_t * c,
+    xcb_shm_get_image_cookie_t cookie,
+    xcb_generic_error_t **e));
+
+_FN(shm_get_image_unchecked, xcb_shm_get_image_cookie_t,
+  (
+    xcb_connection_t * c,
+    xcb_drawable_t drawable,
+    int16_t x, int16_t y,
+    uint16_t width, uint16_t height,
+    uint32_t plane_mask,
+    uint8_t format,
+    xcb_shm_seg_t shmseg,
+    uint32_t offset));
+
+_FN(shm_attach, xcb_void_cookie_t,
+  (xcb_connection_t * c,
+    xcb_shm_seg_t shmseg,
+    uint32_t shmid,
+    uint8_t read_only));
+
+_FN(get_extension_data, xcb_query_extension_reply_t *,
+  (xcb_connection_t * c, xcb_extension_t *ext));
+
+_FN(get_setup, xcb_setup_t *, (xcb_connection_t * c));
+_FN(disconnect, void, (xcb_connection_t * c));
+_FN(connection_has_error, int, (xcb_connection_t * c));
+_FN(connect, xcb_connection_t *, (const char *displayname, int *screenp));
+_FN(setup_roots_iterator, xcb_screen_iterator_t, (const xcb_setup_t *R));
+_FN(generate_id, std::uint32_t, (xcb_connection_t * c));
+
+int init_shm() {
+  static void *handle { nullptr };
+  static bool funcs_loaded = false;
+
+  if(funcs_loaded) return 0;
+
+  if(!handle) {
+    handle = dyn::handle({ "libxcb-shm.so.0", "libxcb-shm.so" });
+    if(!handle) {
+      return -1;
+    }
+  }
+
+  std::vector<std::tuple<dyn::apiproc *, const char *>> funcs {
+    { (dyn::apiproc *)&shm_id, "xcb_shm_id" },
+    { (dyn::apiproc *)&shm_get_image_reply, "xcb_shm_get_image_reply" },
+    { (dyn::apiproc *)&shm_get_image_unchecked, "xcb_shm_get_image_unchecked" },
+    { (dyn::apiproc *)&shm_attach, "xcb_shm_attach" },
+  };
+
+  if(dyn::load(handle, funcs)) {
+    return -1;
+  }
+
+  funcs_loaded = true;
+  return 0;
+}
+
+int init() {
+  static void *handle { nullptr };
+  static bool funcs_loaded = false;
+
+  if(funcs_loaded) return 0;
+
+  if(!handle) {
+    handle = dyn::handle({ "libxcb.so.1", "libxcb.so" });
+    if(!handle) {
+      return -1;
+    }
+  }
+
+  std::vector<std::tuple<dyn::apiproc *, const char *>> funcs {
+    { (dyn::apiproc *)&get_extension_data, "xcb_get_extension_data" },
+    { (dyn::apiproc *)&get_setup, "xcb_get_setup" },
+    { (dyn::apiproc *)&disconnect, "xcb_disconnect" },
+    { (dyn::apiproc *)&connection_has_error, "xcb_connection_has_error" },
+    { (dyn::apiproc *)&connect, "xcb_connect" },
+    { (dyn::apiproc *)&setup_roots_iterator, "xcb_setup_roots_iterator" },
+    { (dyn::apiproc *)&generate_id, "xcb_generate_id" },
+  };
+
+  if(dyn::load(handle, funcs)) {
+    return -1;
+  }
+
+  funcs_loaded = true;
+  return 0;
+}
+
+#undef _FN
+} // namespace xcb
 
 void freeImage(XImage *);
 void freeX(XFixesCursorImage *);
 
-using xcb_connect_t = util::safe_ptr<xcb_connection_t, xcb_disconnect>;
+using xcb_connect_t = util::dyn_safe_ptr<xcb_connection_t, &xcb::disconnect>;
 using xcb_img_t     = util::c_ptr<xcb_shm_get_image_reply_t>;
 
-using xdisplay_t = util::safe_ptr_v2<Display, int, XCloseDisplay>;
+using xdisplay_t = util::dyn_safe_ptr_v2<Display, int, &x11::CloseDisplay>;
 using ximg_t     = util::safe_ptr<XImage, freeImage>;
 using xcursor_t  = util::safe_ptr<XFixesCursorImage, freeX>;
 
-using crtc_info_t   = util::safe_ptr<_XRRCrtcInfo, XRRFreeCrtcInfo>;
-using output_info_t = util::safe_ptr<_XRROutputInfo, XRRFreeOutputInfo>;
-using screen_res_t  = util::safe_ptr<_XRRScreenResources, XRRFreeScreenResources>;
+using crtc_info_t   = util::dyn_safe_ptr<_XRRCrtcInfo, &x11::rr::FreeCrtcInfo>;
+using output_info_t = util::dyn_safe_ptr<_XRROutputInfo, &x11::rr::FreeOutputInfo>;
+using screen_res_t  = util::dyn_safe_ptr<_XRRScreenResources, &x11::rr::FreeScreenResources>;
 
 class shm_id_t {
 public:
@@ -86,8 +313,8 @@ struct shm_img_t : public img_t {
   }
 };
 
-void blend_cursor(Display *display, img_t &img, int offsetX, int offsetY) {
-  xcursor_t overlay { XFixesGetCursorImage(display) };
+static void blend_cursor(Display *display, img_t &img, int offsetX, int offsetY) {
+  xcursor_t overlay { x11::fix::GetCursorImage(display) };
 
   if(!overlay) {
     BOOST_LOG(error) << "Couldn't get cursor from XFixesGetCursorImage"sv;
@@ -151,11 +378,11 @@ struct x11_attr_t : public display_t {
    */
   // int env_width, env_height;
 
-  x11_attr_t(mem_type_e mem_type) : xdisplay { XOpenDisplay(nullptr) }, xwindow {}, xattr {}, mem_type { mem_type } {
-    XInitThreads();
+  x11_attr_t(mem_type_e mem_type) : xdisplay { x11::OpenDisplay(nullptr) }, xwindow {}, xattr {}, mem_type { mem_type } {
+    x11::InitThreads();
   }
 
-  int init(int framerate, const std::string &output_name) {
+  int init(const std::string &display_name, int framerate) {
     if(!xdisplay) {
       BOOST_LOG(error) << "Could not open X11 display"sv;
       return -1;
@@ -168,19 +395,19 @@ struct x11_attr_t : public display_t {
     refresh();
 
     int streamedMonitor = -1;
-    if(!output_name.empty()) {
-      streamedMonitor = (int)util::from_view(output_name);
+    if(!display_name.empty()) {
+      streamedMonitor = (int)util::from_view(display_name);
     }
 
     if(streamedMonitor != -1) {
       BOOST_LOG(info) << "Configuring selected monitor ("sv << streamedMonitor << ") to stream"sv;
-      screen_res_t screenr { XRRGetScreenResources(xdisplay.get(), xwindow) };
+      screen_res_t screenr { x11::rr::GetScreenResources(xdisplay.get(), xwindow) };
       int output = screenr->noutput;
 
       output_info_t result;
       int monitor = 0;
       for(int x = 0; x < output; ++x) {
-        output_info_t out_info { XRRGetOutputInfo(xdisplay.get(), screenr.get(), screenr->outputs[x]) };
+        output_info_t out_info { x11::rr::GetOutputInfo(xdisplay.get(), screenr.get(), screenr->outputs[x]) };
         if(out_info && out_info->connection == RR_Connected) {
           if(monitor++ == streamedMonitor) {
             result = std::move(out_info);
@@ -194,7 +421,7 @@ struct x11_attr_t : public display_t {
         return -1;
       }
 
-      crtc_info_t crt_info { XRRGetCrtcInfo(xdisplay.get(), screenr.get(), result->crtc) };
+      crtc_info_t crt_info { x11::rr::GetCrtcInfo(xdisplay.get(), screenr.get(), result->crtc) };
       BOOST_LOG(info)
         << "Streaming display: "sv << result->name << " with res "sv << crt_info->width << 'x' << crt_info->height << " offset by "sv << crt_info->x << 'x' << crt_info->y;
 
@@ -218,7 +445,7 @@ struct x11_attr_t : public display_t {
    * Called when the display attributes should change.
    */
   void refresh() {
-    XGetWindowAttributes(xdisplay.get(), xwindow, &xattr); //Update xattr's
+    x11::GetWindowAttributes(xdisplay.get(), xwindow, &xattr); //Update xattr's
   }
 
   capture_e capture(snapshot_cb_t &&snapshot_cb, std::shared_ptr<img_t> img, bool *cursor) override {
@@ -263,7 +490,7 @@ struct x11_attr_t : public display_t {
       BOOST_LOG(warning) << "X dimensions changed in non-SHM mode, request reinit"sv;
       return capture_e::reinit;
     }
-    XImage *img { XGetImage(xdisplay.get(), xwindow, offset_x, offset_y, width, height, AllPlanes, ZPixmap) };
+    XImage *img { x11::GetImage(xdisplay.get(), xwindow, offset_x, offset_y, width, height, AllPlanes, ZPixmap) };
 
     auto img_out         = (x11_img_t *)img_out_base;
     img_out->width       = img->width;
@@ -286,7 +513,7 @@ struct x11_attr_t : public display_t {
 
   std::shared_ptr<hwdevice_t> make_hwdevice(pix_fmt_e pix_fmt) override {
     if(mem_type == mem_type_e::vaapi) {
-      return egl::make_hwdevice(width, height);
+      return va::make_hwdevice(width, height);
     }
 
     return std::make_shared<hwdevice_t>();
@@ -316,7 +543,7 @@ struct shm_attr_t : public x11_attr_t {
     refresh_task_id = task_pool.pushDelayed(&shm_attr_t::delayed_refresh, 2s, this).task_id;
   }
 
-  shm_attr_t(mem_type_e mem_type) : x11_attr_t(mem_type), shm_xdisplay { XOpenDisplay(nullptr) } {
+  shm_attr_t(mem_type_e mem_type) : x11_attr_t(mem_type), shm_xdisplay { x11::OpenDisplay(nullptr) } {
     refresh_task_id = task_pool.pushDelayed(&shm_attr_t::delayed_refresh, 2s, this).task_id;
   }
 
@@ -366,9 +593,9 @@ struct shm_attr_t : public x11_attr_t {
       return capture_e::reinit;
     }
     else {
-      auto img_cookie = xcb_shm_get_image_unchecked(xcb.get(), display->root, offset_x, offset_y, width, height, ~0, XCB_IMAGE_FORMAT_Z_PIXMAP, seg, 0);
+      auto img_cookie = xcb::shm_get_image_unchecked(xcb.get(), display->root, offset_x, offset_y, width, height, ~0, XCB_IMAGE_FORMAT_Z_PIXMAP, seg, 0);
 
-      xcb_img_t img_reply { xcb_shm_get_image_reply(xcb.get(), img_cookie, nullptr) };
+      xcb_img_t img_reply { xcb::shm_get_image_reply(xcb.get(), img_cookie, nullptr) };
       if(!img_reply) {
         BOOST_LOG(error) << "Could not get image reply"sv;
         return capture_e::reinit;
@@ -399,26 +626,26 @@ struct shm_attr_t : public x11_attr_t {
     return 0;
   }
 
-  int init(int framerate, const std::string &output_name) {
-    if(x11_attr_t::init(framerate, output_name)) {
+  int init(const std::string &display_name, int framerate) {
+    if(x11_attr_t::init(display_name, framerate)) {
       return 1;
     }
 
-    shm_xdisplay.reset(XOpenDisplay(nullptr));
-    xcb.reset(xcb_connect(nullptr, nullptr));
-    if(xcb_connection_has_error(xcb.get())) {
+    shm_xdisplay.reset(x11::OpenDisplay(nullptr));
+    xcb.reset(xcb::connect(nullptr, nullptr));
+    if(xcb::connection_has_error(xcb.get())) {
       return -1;
     }
 
-    if(!xcb_get_extension_data(xcb.get(), &xcb_shm_id)->present) {
+    if(!xcb::get_extension_data(xcb.get(), xcb::shm_id)->present) {
       BOOST_LOG(error) << "Missing SHM extension"sv;
 
       return -1;
     }
 
-    auto iter = xcb_setup_roots_iterator(xcb_get_setup(xcb.get()));
+    auto iter = xcb::setup_roots_iterator(xcb::get_setup(xcb.get()));
     display   = iter.data;
-    seg       = xcb_generate_id(xcb.get());
+    seg       = xcb::generate_id(xcb.get());
 
     shm_id.id = shmget(IPC_PRIVATE, frame_size(), IPC_CREAT | 0777);
     if(shm_id.id == -1) {
@@ -426,7 +653,7 @@ struct shm_attr_t : public x11_attr_t {
       return -1;
     }
 
-    xcb_shm_attach(xcb.get(), seg, shm_id.id, false);
+    xcb::shm_attach(xcb.get(), seg, shm_id.id, false);
     data.data = shmat(shm_id.id, nullptr, 0);
 
     if((uintptr_t)data.data == -1) {
@@ -443,16 +670,22 @@ struct shm_attr_t : public x11_attr_t {
   }
 };
 
-std::shared_ptr<display_t> display(platf::mem_type_e hwdevice_type, const std::string &output_name, int framerate) {
+std::shared_ptr<display_t> x11_display(platf::mem_type_e hwdevice_type, const std::string &display_name, int framerate) {
   if(hwdevice_type != platf::mem_type_e::system && hwdevice_type != platf::mem_type_e::vaapi && hwdevice_type != platf::mem_type_e::cuda) {
     BOOST_LOG(error) << "Could not initialize display with the given hw device type."sv;
     return nullptr;
   }
 
+  if(xcb::init_shm() || xcb::init() || x11::init() || x11::rr::init() || x11::fix::init()) {
+    BOOST_LOG(error) << "Couldn't init x11 libraries"sv;
+
+    return nullptr;
+  }
+
   // Attempt to use shared memory X11 to avoid copying the frame
   auto shm_disp = std::make_shared<shm_attr_t>(hwdevice_type);
 
-  auto status = shm_disp->init(framerate, output_name);
+  auto status = shm_disp->init(display_name, framerate);
   if(status > 0) {
     // x11_attr_t::init() failed, don't bother trying again.
     return nullptr;
@@ -464,28 +697,34 @@ std::shared_ptr<display_t> display(platf::mem_type_e hwdevice_type, const std::s
 
   // Fallback
   auto x11_disp = std::make_shared<x11_attr_t>(hwdevice_type);
-  if(x11_disp->init(framerate, output_name)) {
+  if(x11_disp->init(display_name, framerate)) {
     return nullptr;
   }
 
   return x11_disp;
 }
 
-std::vector<std::string> display_names() {
+std::vector<std::string> x11_display_names() {
+  if(load_x11() || load_xcb()) {
+    BOOST_LOG(error) << "Couldn't init x11 libraries"sv;
+
+    return {};
+  }
+
   BOOST_LOG(info) << "Detecting connected monitors"sv;
 
-  xdisplay_t xdisplay { XOpenDisplay(nullptr) };
+  xdisplay_t xdisplay { x11::OpenDisplay(nullptr) };
   if(!xdisplay) {
     return {};
   }
 
   auto xwindow = DefaultRootWindow(xdisplay.get());
-  screen_res_t screenr { XRRGetScreenResources(xdisplay.get(), xwindow) };
+  screen_res_t screenr { x11::rr::GetScreenResources(xdisplay.get(), xwindow) };
   int output = screenr->noutput;
 
   int monitor = 0;
   for(int x = 0; x < output; ++x) {
-    output_info_t out_info { XRRGetOutputInfo(xdisplay.get(), screenr.get(), screenr->outputs[x]) };
+    output_info_t out_info { x11::rr::GetOutputInfo(xdisplay.get(), screenr.get(), screenr->outputs[x]) };
     if(out_info && out_info->connection == RR_Connected) {
       ++monitor;
     }
@@ -505,6 +744,69 @@ void freeImage(XImage *p) {
   XDestroyImage(p);
 }
 void freeX(XFixesCursorImage *p) {
-  XFree(p);
+  x11::Free(p);
 }
+
+int load_xcb() {
+  // This will be called once only
+  static int xcb_status = xcb::init_shm() || xcb::init();
+
+  return xcb_status;
+}
+
+int load_x11() {
+  // This will be called once only
+  static int x11_status = x11::init() || x11::rr::init() || x11::fix::init();
+
+  return x11_status;
+}
+
+namespace x11 {
+std::optional<cursor_t> cursor_t::make() {
+  if(load_x11()) {
+    return std::nullopt;
+  }
+
+  cursor_t cursor;
+
+  cursor.ctx.reset((cursor_ctx_t::pointer)x11::OpenDisplay(nullptr));
+
+  return cursor;
+}
+
+void cursor_t::capture(egl::cursor_t &img) {
+  auto display = (xdisplay_t::pointer)ctx.get();
+
+  xcursor_t xcursor = fix::GetCursorImage(display);
+
+  if(img.serial != xcursor->cursor_serial) {
+    auto buf_size = xcursor->width * xcursor->height * sizeof(int);
+
+    if(img.buffer.size() < buf_size) {
+      img.buffer.resize(buf_size);
+    }
+
+    std::transform(xcursor->pixels, xcursor->pixels + buf_size / 4, (int *)img.buffer.data(), [](long pixel) -> int {
+      return pixel;
+    });
+  }
+
+  img.data        = img.buffer.data();
+  img.width       = xcursor->width;
+  img.height      = xcursor->height;
+  img.x           = xcursor->x - xcursor->xhot;
+  img.y           = xcursor->y - xcursor->yhot;
+  img.pixel_pitch = 4;
+  img.row_pitch   = img.pixel_pitch * img.width;
+  img.serial      = xcursor->cursor_serial;
+}
+
+void cursor_t::blend(img_t &img, int offsetX, int offsetY) {
+  blend_cursor((xdisplay_t::pointer)ctx.get(), img, offsetX, offsetY);
+}
+
+void freeCursorCtx(cursor_ctx_t::pointer ctx) {
+  x11::CloseDisplay((xdisplay_t::pointer)ctx);
+}
+} // namespace x11
 } // namespace platf
diff --git a/sunshine/platform/linux/x11grab.h b/sunshine/platform/linux/x11grab.h
new file mode 100644
index 00000000..1440ae76
--- /dev/null
+++ b/sunshine/platform/linux/x11grab.h
@@ -0,0 +1,48 @@
+#ifndef SUNSHINE_X11_GRAB
+#define SUNSHINE_X11_GRAB
+
+#include <optional>
+
+#include "sunshine/platform/common.h"
+#include "sunshine/utility.h"
+
+namespace egl {
+class cursor_t;
+}
+
+namespace platf::x11 {
+
+#ifdef SUNSHINE_BUILD_X11
+struct cursor_ctx_raw_t;
+void freeCursorCtx(cursor_ctx_raw_t *ctx);
+
+using cursor_ctx_t = util::safe_ptr<cursor_ctx_raw_t, freeCursorCtx>;
+
+class cursor_t {
+public:
+  static std::optional<cursor_t> make();
+
+  void capture(egl::cursor_t &img);
+
+  /**
+   * Capture and blend the cursor into the image
+   * 
+   * img <-- destination image
+   * offsetX, offsetY <--- Top left corner of the virtual screen
+   */
+  void blend(img_t &img, int offsetX, int offsetY);
+
+  cursor_ctx_t ctx;
+};
+#else
+class cursor_t {
+public:
+  static std::optional<cursor_t> make() { return std::nullopt; }
+
+  void capture(egl::cursor_t &) {}
+  void blend(img_t &, int, int) {}
+};
+#endif
+} // namespace platf::x11
+
+#endif
\ No newline at end of file
diff --git a/sunshine/platform/windows/display.h b/sunshine/platform/windows/display.h
index 26000d88..37020fef 100644
--- a/sunshine/platform/windows/display.h
+++ b/sunshine/platform/windows/display.h
@@ -69,9 +69,11 @@ struct cursor_t {
 class gpu_cursor_t {
 public:
   gpu_cursor_t() : cursor_view { 0, 0, 0, 0, 0.0f, 1.0f } {};
-  void set_pos(LONG rel_x, LONG rel_y) {
+  void set_pos(LONG rel_x, LONG rel_y, bool visible) {
     cursor_view.TopLeftX = rel_x;
     cursor_view.TopLeftY = rel_y;
+
+    this->visible = visible;
   }
 
   void set_texture(LONG width, LONG height, texture2d_t &&texture) {
@@ -85,6 +87,8 @@ public:
   shader_res_t input_res;
 
   D3D11_VIEWPORT cursor_view;
+
+  bool visible;
 };
 
 class duplication_t {
diff --git a/sunshine/platform/windows/display_vram.cpp b/sunshine/platform/windows/display_vram.cpp
index cc4493ce..9a932665 100644
--- a/sunshine/platform/windows/display_vram.cpp
+++ b/sunshine/platform/windows/display_vram.cpp
@@ -673,7 +673,7 @@ capture_e display_vram_t::snapshot(platf::img_t *img_base, std::chrono::millisec
   }
 
   if(frame_info.LastMouseUpdateTime.QuadPart) {
-    cursor.set_pos(frame_info.PointerPosition.Position.x, frame_info.PointerPosition.Position.y);
+    cursor.set_pos(frame_info.PointerPosition.Position.x, frame_info.PointerPosition.Position.y, frame_info.PointerPosition.Visible && cursor_visible);
   }
 
   if(frame_update_flag) {
@@ -687,10 +687,10 @@ capture_e display_vram_t::snapshot(platf::img_t *img_base, std::chrono::millisec
   }
 
   device_ctx->CopyResource(img->texture.get(), src.get());
-  if(frame_info.PointerPosition.Visible && cursor_visible) {
+  if(cursor.visible) {
     D3D11_VIEWPORT view {
       0.0f, 0.0f,
-      width, height,
+      (float)width, (float)height,
       0.0f, 1.0f
     };
 
diff --git a/sunshine/process.cpp b/sunshine/process.cpp
index 1d8ece13..f68593c0 100644
--- a/sunshine/process.cpp
+++ b/sunshine/process.cpp
@@ -11,6 +11,7 @@
 
 #include <boost/property_tree/json_parser.hpp>
 #include <boost/property_tree/ptree.hpp>
+#include <boost/filesystem.hpp>
 
 #include "main.h"
 #include "utility.h"
@@ -109,14 +110,17 @@ int proc_t::execute(int app_id) {
   if(proc.cmd.empty()) {
     BOOST_LOG(debug) << "Executing [Desktop]"sv;
     placebo = true;
-  }
-  else if(proc.output.empty() || proc.output == "null"sv) {
-    BOOST_LOG(info) << "Executing: ["sv << proc.cmd << ']';
-    _process = bp::child(_process_handle, proc.cmd, _env, bp::std_out > bp::null, bp::std_err > bp::null, ec);
-  }
-  else {
-    BOOST_LOG(info) << "Executing: ["sv << proc.cmd << ']';
-    _process = bp::child(_process_handle, proc.cmd, _env, bp::std_out > _pipe.get(), bp::std_err > _pipe.get(), ec);
+  } else {
+    boost::filesystem::path working_dir = proc.working_dir.empty() ? 
+    boost::filesystem::path(proc.cmd).parent_path() : boost::filesystem::path(proc.working_dir);
+    if(proc.output.empty() || proc.output == "null"sv) {
+      BOOST_LOG(info) << "Executing: ["sv << proc.cmd << ']';
+      _process = bp::child(_process_handle, proc.cmd, _env, bp::start_dir(working_dir), bp::std_out > bp::null, bp::std_err > bp::null, ec);
+    }
+    else {
+      BOOST_LOG(info) << "Executing: ["sv << proc.cmd << ']';
+      _process = bp::child(_process_handle, proc.cmd, _env, bp::start_dir(working_dir), bp::std_out > _pipe.get(), bp::std_err > _pipe.get(), ec);
+    }
   }
 
   if(ec) {
@@ -275,6 +279,7 @@ std::optional<proc::proc_t> parse(const std::string &file_name) {
       auto output             = app_node.get_optional<std::string>("output"s);
       auto name               = parse_env_val(this_env, app_node.get<std::string>("name"s));
       auto cmd                = app_node.get_optional<std::string>("cmd"s);
+      auto working_dir        = app_node.get_optional<std::string>("working-dir"s);
 
       std::vector<proc::cmd_t> prep_cmds;
       if(prep_nodes_opt) {
@@ -312,6 +317,10 @@ std::optional<proc::proc_t> parse(const std::string &file_name) {
         ctx.cmd = parse_env_val(this_env, *cmd);
       }
 
+      if(working_dir) {
+        ctx.working_dir = parse_env_val(this_env, *working_dir);
+      }
+
       ctx.name      = std::move(name);
       ctx.prep_cmds = std::move(prep_cmds);
       ctx.detached  = std::move(detached);
diff --git a/sunshine/process.h b/sunshine/process.h
index 1339b76b..86016b64 100644
--- a/sunshine/process.h
+++ b/sunshine/process.h
@@ -34,6 +34,7 @@ struct cmd_t {
  * cmd -- Runs indefinitely until:
  *    No session is running and a different set of commands it to be executed
  *    Command exits
+ * working_dir -- the process working directory. This is required for some games to run properly.
  * cmd_output --
  *    empty    -- The output of the commands are appended to the output of sunshine
  *    "null"   -- The output of the commands are discarded
@@ -52,6 +53,7 @@ struct ctx_t {
 
   std::string name;
   std::string cmd;
+  std::string working_dir;
   std::string output;
 };
 
diff --git a/sunshine/utility.h b/sunshine/utility.h
index 4740ae6a..af2da53e 100644
--- a/sunshine/utility.h
+++ b/sunshine/utility.h
@@ -389,6 +389,10 @@ auto enm(T &val) -> std::underlying_type_t<T> & {
 }
 
 inline std::int64_t from_chars(const char *begin, const char *end) {
+  if(begin == end) {
+    return 0;
+  }
+
   std::int64_t res {};
   std::int64_t mul = 1;
   while(begin != --end) {
@@ -592,6 +596,14 @@ bool operator!=(std::nullptr_t, const uniq_ptr<T, D> &y) {
   return (bool)y;
 }
 
+template<class P>
+using shared_t = std::shared_ptr<typename P::element_type>;
+
+template<class P, class T>
+shared_t<P> make_shared(T *pointer) {
+  return shared_t<P>(reinterpret_cast<typename P::pointer>(pointer), typename P::deleter_type());
+}
+
 template<class T>
 class wrap_ptr {
 public:
diff --git a/sunshine/video.cpp b/sunshine/video.cpp
index 8039eac8..261d86bc 100644
--- a/sunshine/video.cpp
+++ b/sunshine/video.cpp
@@ -88,7 +88,7 @@ public:
 
     data[0] = sw_frame->data[0] + offsetY;
     if(sw_frame->format == AV_PIX_FMT_NV12) {
-      data[1] = sw_frame->data[1] + offsetUV;
+      data[1] = sw_frame->data[1] + offsetUV * 2;
       data[2] = nullptr;
     }
     else {
@@ -237,10 +237,11 @@ public:
 };
 
 enum flag_e {
-  DEFAULT          = 0x00,
-  SYSTEM_MEMORY    = 0x01,
-  H264_ONLY        = 0x02,
-  LIMITED_GOP_SIZE = 0x04,
+  DEFAULT           = 0x00,
+  PARALLEL_ENCODING = 0x01,
+  H264_ONLY         = 0x02, // When HEVC is to heavy
+  LIMITED_GOP_SIZE  = 0x04, // Some encoders don't like it when you have an infinite GOP_SIZE. *cough* VAAPI *cough*
+  SINGLE_SLICE_ONLY = 0x08, // Never use multiple slices <-- Older intel iGPU's ruin it for everyone else :P
 };
 
 struct encoder_t {
@@ -440,7 +441,7 @@ static encoder_t nvenc {
   DEFAULT,
   dxgi_make_hwdevice_ctx
 #else
-  SYSTEM_MEMORY,
+  PARALLEL_ENCODING,
   cuda_make_hwdevice_ctx
 #endif
 };
@@ -506,7 +507,7 @@ static encoder_t software {
     std::make_optional<encoder_t::option_t>("qp"s, &config::video.qp),
     "libx264"s,
   },
-  H264_ONLY | SYSTEM_MEMORY,
+  H264_ONLY | PARALLEL_ENCODING,
 
   nullptr
 };
@@ -534,7 +535,7 @@ static encoder_t vaapi {
     std::make_optional<encoder_t::option_t>("qp"s, &config::video.qp),
     "h264_vaapi"s,
   },
-  LIMITED_GOP_SIZE | SYSTEM_MEMORY,
+  LIMITED_GOP_SIZE | PARALLEL_ENCODING | SINGLE_SLICE_ONLY,
 
   vaapi_make_hwdevice_ctx
 };
@@ -675,11 +676,10 @@ void captureThread(
         img.reset();
       }
 
-      // Some classes of display cannot have multiple instances at once
-      disp.reset();
-
       // display_wp is modified in this thread only
-      while(!display_wp->expired()) {
+      // Wait for the other shared_ptr's of display to be destroyed.
+      // New displays will only be created in this thread.
+      while(display_wp->use_count() != 1) {
         std::this_thread::sleep_for(100ms);
       }
 
@@ -696,6 +696,7 @@ void captureThread(
       }
 
       display_wp = disp;
+
       // Re-allocate images
       for(auto &img : imgs) {
         img = disp->alloc_img();
@@ -1371,7 +1372,7 @@ void capture(
   auto idr_events = mail->event<bool>(mail::idr);
 
   idr_events->raise(true);
-  if(encoders.front().flags & SYSTEM_MEMORY) {
+  if(encoders.front().flags & PARALLEL_ENCODING) {
     capture_async(std::move(mail), config, channel_data);
   }
   else {
@@ -1537,8 +1538,13 @@ retry:
 
   std::vector<std::pair<encoder_t::flag_e, config_t>> configs {
     { encoder_t::DYNAMIC_RANGE, { 1920, 1080, 60, 1000, 1, 0, 3, 1, 1 } },
-    { encoder_t::SLICE, { 1920, 1080, 60, 1000, 2, 1, 1, 0, 0 } },
   };
+
+  if(!(encoder.flags & SINGLE_SLICE_ONLY)) {
+    configs.emplace_back(
+      std::pair<encoder_t::flag_e, config_t> { encoder_t::SLICE, { 1920, 1080, 60, 1000, 2, 1, 1, 0, 0 } });
+  }
+
   for(auto &[flag, config] : configs) {
     auto h264 = config;
     auto hevc = config;
@@ -1552,6 +1558,11 @@ retry:
     }
   }
 
+  if(encoder.flags & SINGLE_SLICE_ONLY) {
+    encoder.h264.capabilities[encoder_t::SLICE] = false;
+    encoder.hevc.capabilities[encoder_t::SLICE] = false;
+  }
+
   encoder.h264[encoder_t::VUI_PARAMETERS] = encoder.h264[encoder_t::VUI_PARAMETERS] && !config::sunshine.flags[config::flag::FORCE_VIDEO_HEADER_REPLACE];
   encoder.hevc[encoder_t::VUI_PARAMETERS] = encoder.hevc[encoder_t::VUI_PARAMETERS] && !config::sunshine.flags[config::flag::FORCE_VIDEO_HEADER_REPLACE];