diff --git a/packages/uni-cli-shared/lib/preprocess.js b/packages/uni-cli-shared/lib/preprocess.js
index 46faf009a8db104ab62c8b68457f36db7956fce3..861cd65b7e3bc19c3899be92eb0c8975d849be22 100644
--- a/packages/uni-cli-shared/lib/preprocess.js
+++ b/packages/uni-cli-shared/lib/preprocess.js
@@ -5,7 +5,10 @@ const DEFAULT_KEYS = [
   'APP',
   'APP-PLUS-NVUE',
   'APP-VUE',
-  'APP-NVUE'
+  'APP-NVUE',
+  'APP-ANDROID',
+  'APP-IOS',
+  'WEB'
 ]
 
 function normalize (name) {
@@ -44,14 +47,25 @@ module.exports = function initPreprocess (name, platforms, userDefines = {}) {
     nvueContext.APP_PLUS = true
     nvueContext.APP_NVUE = true
     nvueContext.APP_PLUS_NVUE = true
-  }
 
+    if (process.env.UNI_APP_PLATFORM === 'android') {
+      defaultContext.APP_ANDROID = true
+    } else if (process.env.UNI_APP_PLATFORM === 'ios') {
+      defaultContext.APP_IOS = true
+    } else {
+      defaultContext.APP_ANDROID = true
+      defaultContext.APP_IOS = true
+    }
+  }
+  if (name === 'h5') {
+    defaultContext.WEB = true
+  }
   if (name.startsWith('mp-')) {
     vueContext.MP = true
   }
 
   if (name.startsWith('app-')) {
-    vueContext.APP = true
+    vueContext.APP = true
     nvueContext.APP = true
   }
 
diff --git a/packages/uni-template-compiler/__tests__/compiler-mp-alipay.spec.js b/packages/uni-template-compiler/__tests__/compiler-mp-alipay.spec.js
index 14c71afe5709b0240c209b9bdfdc88bc0c2e2102..8d16912de32c6bb61b45c41ab04c86734c5c36d6 100644
--- a/packages/uni-template-compiler/__tests__/compiler-mp-alipay.spec.js
+++ b/packages/uni-template-compiler/__tests__/compiler-mp-alipay.spec.js
@@ -31,11 +31,11 @@ describe('mp:compiler-mp-alipay', () => {
   it('generate ref', () => {
     assertCodegen(
       '<component1 ref="c1">text</component1>',
-      '<component1 vue-id="551070e6-1" ref="__r" data-ref="c1" onVueInit="__l">text</component1>'
+      '<component1 vue-id="551070e6-1" ref="__r" data-ref="c1" onVueInit="__l" vue-slots="{{[\'default\']}}">text</component1>'
     )
     assertCodegen(
       '<component1 :ref="c2">text<text>123213</text></component1>',
-      '<component1 vue-id="551070e6-1" ref="__r" data-ref="{{c2}}" onVueInit="__l">text<text>123213</text></component1>'
+      '<component1 vue-id="551070e6-1" ref="__r" data-ref="{{c2}}" onVueInit="__l" vue-slots="{{[\'default\']}}">text<text>123213</text></component1>'
     )
     assertCodegen(
       '<component1 v-for="item in items" ref="c3"></component1>',
@@ -47,7 +47,7 @@ describe('mp:compiler-mp-alipay', () => {
     )
     assertCodegen(
       '<component1>text</component1>',
-      '<component1 vue-id="551070e6-1" data-com-type="wx" ref="__r" onVueInit="__l">text</component1>',
+      '<component1 vue-id="551070e6-1" data-com-type="wx" ref="__r" onVueInit="__l" vue-slots="{{[\'default\']}}">text</component1>',
       undefined,
       undefined,
       {
@@ -56,7 +56,7 @@ describe('mp:compiler-mp-alipay', () => {
     )
     assertCodegen(
       '<component1 @change="onChange" @cancle="onCancle">text</component1>',
-      '<component1 onChange="__e" onCancle="__e" vue-id="551070e6-1" data-event-opts="{{[[\'^change\',[[\'onChange\']]],[\'^cancle\',[[\'onCancle\']]]]}}" data-com-type="wx" ref="__r" data-event-list="onChange,onCancle" onVueInit="__l">text</component1>',
+      '<component1 onChange="__e" onCancle="__e" vue-id="551070e6-1" data-event-opts="{{[[\'^change\',[[\'onChange\']]],[\'^cancle\',[[\'onCancle\']]]]}}" data-com-type="wx" ref="__r" data-event-list="onChange,onCancle" onVueInit="__l" vue-slots="{{[\'default\']}}">text</component1>',
       undefined,
       undefined,
       {
@@ -65,7 +65,7 @@ describe('mp:compiler-mp-alipay', () => {
     )
     assertCodegen(
       '<credit-pay @change="onChange" @cancle="onCancle">text</credit-pay>',
-      '<plugin-wrapper onChange="__e" onCancle="__e" vue-id="551070e6-1" onPluginWrap="__w" data-event-opts="{{[[\'^change\',[[\'onChange\']]],[\'^cancle\',[[\'onCancle\']]]]}}" data-com-type="wx" data-event-list="onChange,onCancle" onVueInit="__l"><credit-pay onChange="{{\'onChange\'+\'551070e6-1\'}}" onCancle="{{\'onCancle\'+\'551070e6-1\'}}" onVueInit="__l">text</credit-pay></plugin-wrapper>',
+      '<plugin-wrapper onChange="__e" onCancle="__e" vue-id="551070e6-1" onPluginWrap="__w" data-event-opts="{{[[\'^change\',[[\'onChange\']]],[\'^cancle\',[[\'onCancle\']]]]}}" data-com-type="wx" data-event-list="onChange,onCancle" onVueInit="__l" vue-slots="{{[\'default\']}}"><credit-pay onChange="{{\'onChange\'+\'551070e6-1\'}}" onCancle="{{\'onCancle\'+\'551070e6-1\'}}" onVueInit="__l" vue-slots="{{[\'default\']}}">text</credit-pay></plugin-wrapper>',
       undefined,
       undefined,
       {
@@ -82,33 +82,33 @@ describe('mp:compiler-mp-alipay', () => {
   it('generate default slot', () => {
     assertCodegen(
       '<component1>text</component1>',
-      '<component1 vue-id="551070e6-1" onVueInit="__l">text</component1>'
+      '<component1 vue-id="551070e6-1" onVueInit="__l" vue-slots="{{[\'default\']}}">text</component1>'
     )
     assertCodegen(
       '<component1>text<text>123213</text></component1>',
-      '<component1 vue-id="551070e6-1" onVueInit="__l">text<text>123213</text></component1>'
+      '<component1 vue-id="551070e6-1" onVueInit="__l" vue-slots="{{[\'default\']}}">text<text>123213</text></component1>'
     )
     assertCodegen(
       '<component1>text<block slot="right"></block></component1>',
-      '<component1 vue-id="551070e6-1" onVueInit="__l">text<view slot="right"></view></component1>'
+      '<component1 vue-id="551070e6-1" onVueInit="__l" vue-slots="{{[\'default\',\'right\']}}">text<view slot="right"></view></component1>'
     )
   })
 
   it('generate scoped slot', () => {
     assertCodegen(
       '<component1 :text="\'text\'"><template v-slot="props"><view :class="{text:props.text}">{{props.text}}</view></template></component1>',
-      '<component1 vue-id="551070e6-1" text="text" onVueInit="__l"><view slot-scope="props"><view class="{{((props.text)?\'text\':\'\')}}">{{props.text}}</view></view></component1>'
+      '<component1 vue-id="551070e6-1" text="text" onVueInit="__l" vue-slots="{{[\'default\']}}"><view slot-scope="props"><view class="{{((props.text)?\'text\':\'\')}}">{{props.text}}</view></view></component1>'
     )
     assertCodegen(
       '<component1 :text="\'text\'"><template v-slot="{text}"><view :class="{text:text}">{{text}}</view></template></component1>',
-      '<component1 vue-id="551070e6-1" text="text" onVueInit="__l"><view slot-scope="__SCOPED__"><view class="{{((__SCOPED__.text)?\'text\':\'\')}}">{{__SCOPED__.text}}</view></view></component1>'
+      '<component1 vue-id="551070e6-1" text="text" onVueInit="__l" vue-slots="{{[\'default\']}}"><view slot-scope="__SCOPED__"><view class="{{((__SCOPED__.text)?\'text\':\'\')}}">{{__SCOPED__.text}}</view></view></component1>'
     )
   })
 
   it('generate scoped slot with scopedSlotsCompiler: auto', () => {
     assertCodegen(
       '<my-component><template v-slot="{item}">{{item}}<template></my-component>',
-      '<my-component vue-id="551070e6-1" onVueInit="__l"><view slot-scope="__SCOPED__">{{__SCOPED__.item}}</view></my-component>',
+      '<my-component vue-id="551070e6-1" onVueInit="__l" vue-slots="{{[\'default\']}}"><view slot-scope="__SCOPED__">{{__SCOPED__.item}}</view></my-component>',
       'with(this){}',
       {
         scopedSlotsCompiler: 'auto'
@@ -116,7 +116,7 @@ describe('mp:compiler-mp-alipay', () => {
     )
     assertCodegen(
       '<my-component><template v-slot="{item}">{{getValue(item)}}<template></my-component>',
-      '<my-component scoped-slots-compiler="augmented" vue-id="551070e6-1" onVueInit="__l"><block a:if="{{$root.m0}}">{{$root.m1}}</block></my-component>',
+      '<my-component scoped-slots-compiler="augmented" vue-id="551070e6-1" onVueInit="__l" vue-slots="{{[\'default\']}}"><block a:if="{{$root.m0}}">{{$root.m1}}</block></my-component>',
       'with(this){var m0=$hasScopedSlotsParams("551070e6-1");var m1=m0?getValue($getScopedSlotsParams("551070e6-1","default","item")):null;$mp.data=Object.assign({},{$root:{m0:m0,m1:m1}})}',
       {
         scopedSlotsCompiler: 'auto'
@@ -124,7 +124,7 @@ describe('mp:compiler-mp-alipay', () => {
     )
     assertCodegen(
       '<my-component><template v-slot="item">{{getValue(item.text)}}<template></my-component>',
-      '<my-component scoped-slots-compiler="augmented" vue-id="551070e6-1" onVueInit="__l"><block a:if="{{$root.m0}}">{{$root.m1}}</block></my-component>',
+      '<my-component scoped-slots-compiler="augmented" vue-id="551070e6-1" onVueInit="__l" vue-slots="{{[\'default\']}}"><block a:if="{{$root.m0}}">{{$root.m1}}</block></my-component>',
       'with(this){var m0=$hasScopedSlotsParams("551070e6-1");var m1=m0?getValue($getScopedSlotsParams("551070e6-1","default").text):null;$mp.data=Object.assign({},{$root:{m0:m0,m1:m1}})}',
       {
         scopedSlotsCompiler: 'auto'
@@ -207,7 +207,7 @@ describe('mp:compiler-mp-alipay', () => {
   it('generate attrs with mergeVirtualHostAttributes', () => {
     assertCodegen(
       '<custom-view>hello world</custom-view>',
-      '<custom-view vue-id="551070e6-1" onVueInit="__l" virtualHostStyle="{{virtualHostStyle}}" virtualHostClass="{{(virtualHostClass)}}">hello world</custom-view>',
+      '<custom-view vue-id="551070e6-1" onVueInit="__l" virtualHostStyle="{{virtualHostStyle}}" virtualHostClass="{{(virtualHostClass)}}" vue-slots="{{[\'default\']}}">hello world</custom-view>',
       'with(this){}',
       {
         mergeVirtualHostAttributes: true
@@ -215,7 +215,7 @@ describe('mp:compiler-mp-alipay', () => {
     )
     assertCodegen(
       '<custom-view :class="class1" :style="style">hello world</custom-view>',
-      '<custom-view vue-id="551070e6-1" onVueInit="__l" virtualHostStyle="{{(style)+virtualHostStyle}}" virtualHostClass="{{((class1)+\' \'+virtualHostClass)}}">hello world</custom-view>',
+      '<custom-view vue-id="551070e6-1" onVueInit="__l" virtualHostStyle="{{(style)+virtualHostStyle}}" virtualHostClass="{{((class1)+\' \'+virtualHostClass)}}" vue-slots="{{[\'default\']}}">hello world</custom-view>',
       'with(this){}',
       {
         mergeVirtualHostAttributes: true
@@ -223,7 +223,7 @@ describe('mp:compiler-mp-alipay', () => {
     )
     assertCodegen(
       '<view><custom-view>hello world</custom-view></view>',
-      '<view class="{{(virtualHostClass)}}" style="{{virtualHostStyle}}"><custom-view vue-id="551070e6-1" onVueInit="__l">hello world</custom-view></view>',
+      '<view class="{{(virtualHostClass)}}" style="{{virtualHostStyle}}"><custom-view vue-id="551070e6-1" onVueInit="__l" vue-slots="{{[\'default\']}}">hello world</custom-view></view>',
       'with(this){}',
       {
         mergeVirtualHostAttributes: true
@@ -231,7 +231,7 @@ describe('mp:compiler-mp-alipay', () => {
     )
     assertCodegen(
       '<view><custom-view :class="class1" :style="style">hello world</custom-view></view>',
-      '<view class="{{(virtualHostClass)}}" style="{{virtualHostStyle}}"><custom-view vue-id="551070e6-1" onVueInit="__l" virtualHostStyle="{{(style)}}" virtualHostClass="{{(class1)}}">hello world</custom-view></view>',
+      '<view class="{{(virtualHostClass)}}" style="{{virtualHostStyle}}"><custom-view vue-id="551070e6-1" onVueInit="__l" virtualHostStyle="{{(style)}}" virtualHostClass="{{(class1)}}" vue-slots="{{[\'default\']}}">hello world</custom-view></view>',
       'with(this){}',
       {
         mergeVirtualHostAttributes: true
diff --git a/packages/uni-template-compiler/lib/template/generate.js b/packages/uni-template-compiler/lib/template/generate.js
index b2f320d4e3651849d5b4fbb5bf0a65ab71da8404..a2b4071cc575855ea111b28ee47d83dff95acd69 100644
--- a/packages/uni-template-compiler/lib/template/generate.js
+++ b/packages/uni-template-compiler/lib/template/generate.js
@@ -46,61 +46,64 @@ function processElement (ast, state, isRoot) {
     } else if (platformName !== 'mp-baidu') {
       ast.attr['bind:' + INTERNAL_EVENT_LINK] = INTERNAL_EVENT_LINK
     }
-
-    if (mergeVirtualHostAttributes && platform.isComponent(ast.type)) {
-      const obj = {
-        style: VIRTUAL_HOST_STYLE,
-        class: VIRTUAL_HOST_CLASS
-      }
-      Object.keys(obj).forEach(key => {
-        if (key in ast.attr) {
-          ast.attr[obj[key]] = ast.attr[key]
+    // TODO 过滤小程序原生组件
+    {
+      // 处理自定义组件虚拟节点样式
+      if (mergeVirtualHostAttributes) {
+        const obj = {
+          style: VIRTUAL_HOST_STYLE,
+          class: VIRTUAL_HOST_CLASS
         }
-        // 支付宝小程序自定义组件外部属性始终无效
-        if (platformName === 'mp-alipay') {
-          delete ast.attr[key]
+        Object.keys(obj).forEach(key => {
+          if (key in ast.attr) {
+            ast.attr[obj[key]] = ast.attr[key]
+          }
+          // 支付宝小程序自定义组件外部属性始终无效
+          if (platformName === 'mp-alipay') {
+            delete ast.attr[key]
+          }
+        })
+      }
+      // 标记自定义组件插槽
+      const children = ast.children
+      // default slot
+      let defaultSlot = false
+      const slots = []
+      for (let i = children.length - 1; i >= 0; i--) {
+        const childElement = children[i]
+        /**
+         * 仅百度、字节支持使用 block 作为命名插槽根节点
+         * 此处为了统一仅忽略默认插槽
+         * <block slot="left"></block> => <view slot="left"></view>
+         */
+        if (typeof childElement !== 'string' && childElement.attr.slot) {
+          const slot = childElement.attr.slot
+          if (slot && slot !== 'default' && childElement.type === 'block') {
+            childElement.type = 'view'
+          }
+          slots.push(slot)
+        } else {
+          defaultSlot = true
         }
-      })
-    }
-
-    const children = ast.children
-    // default slot
-    let defaultSlot = false
-    const slots = []
-    for (let i = children.length - 1; i >= 0; i--) {
-      const childElement = children[i]
-      /**
-       * 仅百度、字节支持使用 block 作为命名插槽根节点
-       * 此处为了统一仅忽略默认插槽
-       * <block slot="left"></block> => <view slot="left"></view>
-       */
-      if (typeof childElement !== 'string' && childElement.attr.slot) {
-        const slot = childElement.attr.slot
-        if (slot && slot !== 'default' && childElement.type === 'block') {
-          childElement.type = 'view'
+      }
+      if (defaultSlot) {
+        slots.push('default')
+      }
+      if (ast.attr.generic) {
+        Object.keys(ast.attr.generic).forEach(scopedSlotName => {
+          slots.push(scopedSlotName)
+        })
+        if (platformName === 'mp-toutiao' || platformName === 'mp-lark') {
+          // 用于字节跳动|飞书小程序模拟抽象节点
+          ast.attr.generic = `{{${JSON.stringify(ast.attr.generic)}}}`.replace(/"/g, '\'')
+        } else {
+          delete ast.attr.generic
         }
-        slots.push(slot)
-      } else {
-        defaultSlot = true
       }
-    }
-    if (defaultSlot) {
-      slots.push('default')
-    }
-    if (ast.attr.generic) {
-      Object.keys(ast.attr.generic).forEach(scopedSlotName => {
-        slots.push(scopedSlotName)
-      })
-      if (platformName === 'mp-toutiao' || platformName === 'mp-lark') {
-        // 用于字节跳动|飞书小程序模拟抽象节点
-        ast.attr.generic = `{{${JSON.stringify(ast.attr.generic)}}}`.replace(/"/g, '\'')
-      } else {
-        delete ast.attr.generic
+      if (slots.length) { // 标记 slots
+        ast.attr['vue-slots'] = '{{[' + slots.reverse().map(slotName => `'${slotName}'`).join(',') + ']}}'
       }
     }
-    if (slots.length && platformName !== 'mp-alipay') { // 标记 slots
-      ast.attr['vue-slots'] = '{{[' + slots.reverse().map(slotName => `'${slotName}'`).join(',') + ']}}'
-    }
     if (ast.attr.id && ast.attr.id.indexOf('{{') === 0) {
       state.tips.add(uniI18n.__('templateCompiler.idAttribNotAllowInCustomComponentProps', { 0: ast.type }))
     }
diff --git a/src/platforms/mp-alipay/runtime/wrapper/app-parser.js b/src/platforms/mp-alipay/runtime/wrapper/app-parser.js
index db1dc35db11b95d69cb2f917fb283623b3503182..56bfb3984eee324fc0d7f682b70f7fa029ee92e0 100644
--- a/src/platforms/mp-alipay/runtime/wrapper/app-parser.js
+++ b/src/platforms/mp-alipay/runtime/wrapper/app-parser.js
@@ -8,23 +8,6 @@ import {
 } from './util'
 
 export default function parseApp (vm) {
-  Object.defineProperty(Vue.prototype, '$slots', {
-    get () {
-      return this.$scope && this.$scope.props.$slots
-    },
-    set () {
-
-    }
-  })
-  Object.defineProperty(Vue.prototype, '$scopedSlots', {
-    get () {
-      return this.$scope && this.$scope.props.$scopedSlots
-    },
-    set () {
-
-    }
-  })
-
   Vue.prototype.$onAliGetAuthorize = function onAliGetAuthorize (method, $event) {
     my.getPhoneNumber({
       success: (res) => {
diff --git a/src/platforms/mp-alipay/runtime/wrapper/component-parser.js b/src/platforms/mp-alipay/runtime/wrapper/component-parser.js
index 5dc4c94cf2be066c55a47a34e7cbacf02e95d0dc..9cc232f0bd9166f5441309fb218b7170eff65a56 100644
--- a/src/platforms/mp-alipay/runtime/wrapper/component-parser.js
+++ b/src/platforms/mp-alipay/runtime/wrapper/component-parser.js
@@ -22,6 +22,29 @@ import {
   initSpecialMethods
 } from './util'
 
+function initSlots (vm, vueSlots) {
+  const $slots = Object.create(null)
+  // 未启用小程序基础库 2.0 时，组件实例支持支持访问 $slots、$scopedSlots
+  Object.defineProperty(vm, '$slots', {
+    get () {
+      const $scope = this.$scope
+      return ($scope && $scope.props.$slots) || ($scope && $scope.props.$scopedSlots ? {} : $slots)
+    }
+  })
+  Object.defineProperty(vm, '$scopedSlots', {
+    get () {
+      const $scope = this.$scope
+      return ($scope && $scope.props.$scopedSlots) || ($scope && $scope.props.$slots ? {} : $slots)
+    }
+  })
+  // 处理$slots,$scopedSlots（暂不支持动态变化$slots）
+  if (Array.isArray(vueSlots) && vueSlots.length) {
+    vueSlots.forEach(slotName => {
+      $slots[slotName] = true
+    })
+  }
+}
+
 function initVm (VueComponent) {
   if (this.$vm) {
     return
@@ -46,6 +69,8 @@ function initVm (VueComponent) {
     // 初始化 vue 实例
     this.$vm = new VueComponent(options)
 
+    initSlots(this.$vm, properties.vueSlots)
+
     // 触发首次 setData
     this.$vm.$mount()
   } else {
@@ -61,6 +86,9 @@ function initVm (VueComponent) {
       // 初始化 vue 实例
       this.$vm = new VueComponent(options)
       handleRef.call(options.parent.$scope, this)
+
+      initSlots(this.$vm, properties.vueSlots)
+
       // 触发首次 setData
       this.$vm.$mount()
 
@@ -83,9 +111,7 @@ export default function parseComponent (vueComponentOptions) {
   }
 
   Object.keys(properties).forEach(key => {
-    if (key !== 'vueSlots') {
-      props[key] = properties[key].value
-    }
+    props[key] = properties[key].value
   })
 
   const componentOptions = {
diff --git a/src/platforms/mp-toutiao/runtime/wrapper/component-parser.js b/src/platforms/mp-toutiao/runtime/wrapper/component-parser.js
index 8585edfdb082f66f8261709abb52262414e9d4aa..be28d0313c4a1bd90f0080bc117656caad8a4bd8 100644
--- a/src/platforms/mp-toutiao/runtime/wrapper/component-parser.js
+++ b/src/platforms/mp-toutiao/runtime/wrapper/component-parser.js
@@ -69,7 +69,11 @@ export default function parseComponent (vueOptions) {
     })
   }
 
+  const oldDetached = lifetimes.detached
   lifetimes.detached = function detached () {
+    if (typeof oldDetached === 'function') {
+      oldDetached.call(this)
+    }
     currentComponents(this, components => {
       const index = components.indexOf(this)
       if (index >= 0) {
diff --git a/src/platforms/mp-toutiao/runtime/wrapper/page-parser.js b/src/platforms/mp-toutiao/runtime/wrapper/page-parser.js
index fb2a37b615736ecc126f2dd9daacc254787b235e..4776891a4cb033286997ed247d77e4f96069e7d0 100644
--- a/src/platforms/mp-toutiao/runtime/wrapper/page-parser.js
+++ b/src/platforms/mp-toutiao/runtime/wrapper/page-parser.js
@@ -38,7 +38,6 @@ export default function parsePage (vuePageOptions) {
     if (typeof oldDetached === 'function') {
       oldDetached.call(this)
     }
-    this.$vm && this.$vm.$destroy()
     // 清理
     const webviewId = this.__webviewId__
     webviewId && Object.keys(instances).forEach(key => {
diff --git a/src/platforms/mp-toutiao/runtime/wrapper/util.js b/src/platforms/mp-toutiao/runtime/wrapper/util.js
index 3682738eb886237e3d0995771f43a73ae65b7741..44aadf0c4227c8747508e1fc689b9e82ade0e31c 100644
--- a/src/platforms/mp-toutiao/runtime/wrapper/util.js
+++ b/src/platforms/mp-toutiao/runtime/wrapper/util.js
@@ -16,12 +16,13 @@ export function initRefs (vm) {
     Object.defineProperty(vm, '$refs', {
       get () {
         const $refs = {}
-        const components = mpInstance.selectAllComponents('.vue-ref')
+        // mpInstance 销毁后 selectAllComponents 取值为 null
+        const components = mpInstance.selectAllComponents('.vue-ref') || []
         components.forEach(component => {
           const ref = component.dataset.ref
           $refs[ref] = component.$vm || component
         })
-        const forComponents = mpInstance.selectAllComponents('.vue-ref-in-for')
+        const forComponents = mpInstance.selectAllComponents('.vue-ref-in-for') || []
         forComponents.forEach(component => {
           const ref = component.dataset.ref
           if (!$refs[ref]) {