diff --git a/rollup.config.dev.js b/rollup.config.dev.js
index 94fe208..46415cc 100644
--- a/rollup.config.dev.js
+++ b/rollup.config.dev.js
@@ -16,15 +16,15 @@ export default [
       name: '_Anot'
     },
     plugins: [esm()]
-  },
-  {
-    input: 'src/anot.touch.js',
-    output: {
-      file: 'dist/anot.touch.js',
-      format: 'iife',
-      sourcemap: true,
-      name: '_Anot'
-    },
-    plugins: [esm()]
   }
+  // {
+  //   input: 'src/anot.touch.js',
+  //   output: {
+  //     file: 'dist/anot.touch.js',
+  //     format: 'iife',
+  //     sourcemap: true,
+  //     name: '_Anot'
+  //   },
+  //   plugins: [esm()]
+  // }
 ]
diff --git a/src/anot.js b/src/anot.js
index 213dc8c..2a6d829 100644
--- a/src/anot.js
+++ b/src/anot.js
@@ -1,5 +1,5 @@
 import { Anot } from './seed/core'
-import './seed/lang.modern'
+import './seed/lang'
 
 import './filters/index'
 import './dom/modern'
diff --git a/src/anot.touch.js b/src/anot.touch.js
index 9b896e3..ef11796 100644
--- a/src/anot.touch.js
+++ b/src/anot.touch.js
@@ -1,5 +1,5 @@
 import { Anot } from './seed/core'
-import './seed/lang.modern'
+import './seed/lang'
 
 import './filters/index'
 import './dom/modern'
diff --git a/src/directives/duplex/updateDataEvents.modern.js b/src/directives/duplex/updateDataEvents.modern.js
index 591b556..0d77e6d 100644
--- a/src/directives/duplex/updateDataEvents.modern.js
+++ b/src/directives/duplex/updateDataEvents.modern.js
@@ -5,13 +5,7 @@
  * 2. value属性重写
  * 3. 定时器轮询
  */
-import {
-  Anot,
-  getShortID as markID,
-  window,
-  document,
-  msie
-} from '../../seed/core'
+import { Anot, getShortID as markID } from '../../seed/core'
 import { updateModel } from './updateDataHandle'
 
 export function updateDataEvents(dom, data) {
@@ -48,9 +42,6 @@ export function updateDataEvents(dom, data) {
         //https://github.com/RubyLouvre/Anot/issues/1368#issuecomment-220503284
         events.compositionstart = openComposition
         events.compositionend = closeComposition
-        if (Anot.msie) {
-          events.keyup = updateModelKeyDown
-        }
       }
       break
   }
diff --git a/src/directives/important.js b/src/directives/important.js
index c1a55b6..b51adc6 100644
--- a/src/directives/important.js
+++ b/src/directives/important.js
@@ -8,7 +8,6 @@ var impDir = Anot.directive('important', {
     throw 'error! no vmodel called ' + name
   },
   update: function(node, attrName, $id) {
-    if (!Anot.inBrowser) return
     var dom = Anot.vdom(node, 'toDOM')
     if (dom.nodeType === 1) {
       dom.removeAttribute(attrName)
diff --git a/src/directives/on.js b/src/directives/on.js
index 86cfc46..5140ddf 100644
--- a/src/directives/on.js
+++ b/src/directives/on.js
@@ -1,4 +1,4 @@
-import { Anot, inBrowser } from '../seed/core'
+import { Anot } from '../seed/core'
 
 import { addScope, makeHandle } from '../parser/index'
 
diff --git a/src/directives/text.js b/src/directives/text.js
index 4ec13a0..9001f32 100644
--- a/src/directives/text.js
+++ b/src/directives/text.js
@@ -1,4 +1,4 @@
-import { Anot, inBrowser } from '../seed/core'
+import { Anot } from '../seed/core'
 
 Anot.directive('text', {
   delay: true,
@@ -9,10 +9,10 @@ Anot.directive('text', {
     }
     var child = { nodeName: '#text', nodeValue: this.getValue() }
     node.children.splice(0, node.children.length, child)
-    if (inBrowser) {
-      Anot.clearHTML(node.dom)
-      node.dom.appendChild(Anot.vdom(child, 'toDOM'))
-    }
+
+    Anot.clearHTML(node.dom)
+    node.dom.appendChild(Anot.vdom(child, 'toDOM'))
+
     this.node = child
     var type = 'expr'
     this.type = this.name = type
diff --git a/src/dom/attr/modern.js b/src/dom/attr/modern.js
index 46b6db7..a5874bf 100644
--- a/src/dom/attr/modern.js
+++ b/src/dom/attr/modern.js
@@ -1,4 +1,4 @@
-import { Anot, window, document } from '../../seed/core'
+import { Anot } from '../../seed/core'
 import { propMap } from './propMap'
 
 var rsvg = /^\[object SVG\w*Element\]$/
diff --git a/src/dom/css/share.js b/src/dom/css/share.js
index 91acaf1..db953f7 100644
--- a/src/dom/css/share.js
+++ b/src/dom/css/share.js
@@ -1,4 +1,4 @@
-import { Anot, oneObject, cssHooks, window } from '../../seed/core'
+import { Anot, oneObject, cssHooks } from '../../seed/core'
 
 var cssMap = oneObject('float', 'cssFloat')
 export { cssMap, cssHooks }
diff --git a/src/dom/event/modern.js b/src/dom/event/modern.js
index 2424305..a7cc840 100644
--- a/src/dom/event/modern.js
+++ b/src/dom/event/modern.js
@@ -1,4 +1,4 @@
-import { Anot, document } from '../../seed/core'
+import { Anot } from '../../seed/core'
 
 import { avEvent } from './share'
 export { avEvent }
diff --git a/src/dom/event/share.js b/src/dom/event/share.js
index 734c62c..8b9b9aa 100644
--- a/src/dom/event/share.js
+++ b/src/dom/event/share.js
@@ -1,16 +1,7 @@
-import {
-  Anot,
-  _slice,
-  eventHooks,
-  modern,
-  window,
-  document,
-  root,
-  getShortID
-} from '../../seed/core'
+import { Anot, _slice, eventHooks, root, getShortID } from '../../seed/core'
 import { canBubbleUp } from './canBubbleUp'
 /* istanbul ignore if */
-var hackSafari = Anot.modern && document.ontouchstart
+var hackSafari = document.ontouchstart
 
 //添加fn.bind, fn.unbind, bind, unbind
 Anot.fn.bind = function(type, fn, phase) {
@@ -54,7 +45,7 @@ Anot.bind = function(elem, type, fn) {
     /* istanbul ignore if */
     if (value.indexOf(type + ':') === -1) {
       //同一种事件只绑定一次
-      if (canBubbleUp[type] || (Anot.modern && focusBlur[type])) {
+      if (canBubbleUp[type] || focusBlur[type]) {
         delegateEvent(type)
       } else {
         Anot._nativeBind(elem, type, dispatch)
@@ -206,16 +197,14 @@ var eventProto = {
   preventDefault: function() {
     var e = this.originalEvent || {}
     e.returnValue = this.returnValue = false
-    if (modern && e.preventDefault) {
-      e.preventDefault()
-    }
+
+    e.preventDefault()
   },
   stopPropagation: function() {
     var e = this.originalEvent || {}
     e.cancelBubble = this.cancelBubble = true
-    if (modern && e.stopPropagation) {
-      e.stopPropagation()
-    }
+
+    e.stopPropagation()
   },
   stopImmediatePropagation: function() {
     this.stopPropagation()
diff --git a/src/dom/html/index.js b/src/dom/html/index.js
index a9bc632..f51a627 100644
--- a/src/dom/html/index.js
+++ b/src/dom/html/index.js
@@ -1,4 +1,4 @@
-import { Anot, Cache, document, createFragment } from '../../seed/core'
+import { Anot, Cache, createFragment } from '../../seed/core'
 import { fromString } from '../../vtree/fromString'
 export { Anot }
 
diff --git a/src/dom/ready/modern.js b/src/dom/ready/modern.js
index 009c7d8..d19f292 100644
--- a/src/dom/ready/modern.js
+++ b/src/dom/ready/modern.js
@@ -1,4 +1,4 @@
-import { Anot, window, document, root, inBrowser } from '../../seed/core'
+import { Anot, root } from '../../seed/core'
 
 var readyList = []
 
@@ -33,6 +33,4 @@ function bootstrap() {
   Anot.bind(window, 'load', fireReady)
 }
 
-if (inBrowser) {
-  bootstrap()
-}
+bootstrap()
diff --git a/src/dom/shim/modern.js b/src/dom/shim/modern.js
index 1102270..e26ed6c 100644
--- a/src/dom/shim/modern.js
+++ b/src/dom/shim/modern.js
@@ -1,5 +1,5 @@
 //safari5+是把contains方法放在Element.prototype上而不是Node.prototype
-import { Anot, document, window, root } from '../../seed/core'
+import { Anot, root } from '../../seed/core'
 import { fixContains } from './fixContains'
 export { Anot }
 
@@ -9,35 +9,33 @@ Anot.cloneNode = function(a) {
   return a.cloneNode(true)
 }
 
-if (Anot.modern) {
-  if (!document.contains) {
-    Node.prototype.contains = function(child) {
-      //IE6-8没有Node对象
-      return fixContains(this, child)
-    }
+if (!document.contains) {
+  Node.prototype.contains = function(child) {
+    //IE6-8没有Node对象
+    return fixContains(this, child)
   }
-  function fixFF(prop, cb) {
-    //firefox12 http://caniuse.com/#search=outerHTML
-    if (!(prop in root)) {
-      HTMLElement.prototype.__defineGetter__(prop, cb)
-    }
-  }
-  fixFF('outerHTML', function() {
-    //https://developer.mozilla.org/en-US/docs/Web/API/ParentNode/children
-    var div = document.createElement('div')
-    div.appendChild(this)
-    return div.innerHTML
-  })
-  fixFF('children', function() {
-    var children = []
-    for (var i = 0, el; (el = this.childNodes[i++]); ) {
-      if (el.nodeType === 1) {
-        children.push(el)
-      }
-    }
-    return children
-  })
-  fixFF('innerText', function() {
-    return this.textContent
-  })
 }
+function fixFF(prop, cb) {
+  //firefox12 http://caniuse.com/#search=outerHTML
+  if (!(prop in root)) {
+    HTMLElement.prototype.__defineGetter__(prop, cb)
+  }
+}
+fixFF('outerHTML', function() {
+  //https://developer.mozilla.org/en-US/docs/Web/API/ParentNode/children
+  var div = document.createElement('div')
+  div.appendChild(this)
+  return div.innerHTML
+})
+fixFF('children', function() {
+  var children = []
+  for (var i = 0, el; (el = this.childNodes[i++]); ) {
+    if (el.nodeType === 1) {
+      children.push(el)
+    }
+  }
+  return children
+})
+fixFF('innerText', function() {
+  return this.textContent
+})
diff --git a/src/effect/detect.js b/src/effect/detect.js
index 9f2f320..8a773f3 100644
--- a/src/effect/detect.js
+++ b/src/effect/detect.js
@@ -4,7 +4,6 @@
  * ------------------------------------------------------------
  */
 
-import { window } from '../seed/core'
 let checker = {
   TransitionEvent: 'transitionend',
   WebKitTransitionEvent: 'webkitTransitionEnd',
diff --git a/src/effect/index.js b/src/effect/index.js
index 5225291..c336dca 100644
--- a/src/effect/index.js
+++ b/src/effect/index.js
@@ -1,4 +1,4 @@
-import { Anot, window, Cache } from '../seed/core'
+import { Anot, Cache } from '../seed/core'
 import { cssDiff } from '../directives/css'
 import {
   css3,
diff --git a/src/filters/date.js b/src/filters/date.js
index 8163196..e62fa9a 100644
--- a/src/filters/date.js
+++ b/src/filters/date.js
@@ -1,37 +1,3 @@
-/*
- 'yyyy': 4 digit representation of year (e.g. AD 1 => 0001, AD 2010 => 2010)
- 'yy': 2 digit representation of year, padded (00-99). (e.g. AD 2001 => 01, AD 2010 => 10)
- 'y': 1 digit representation of year, e.g. (AD 1 => 1, AD 199 => 199)
- 'MMMM': Month in year (January-December)
- 'MMM': Month in year (Jan-Dec)
- 'MM': Month in year, padded (01-12)
- 'M': Month in year (1-12)
- 'dd': Day in month, padded (01-31)
- 'd': Day in month (1-31)
- 'EEEE': Day in Week,(Sunday-Saturday)
- 'EEE': Day in Week, (Sun-Sat)
- 'HH': Hour in day, padded (00-23)
- 'H': Hour in day (0-23)
- 'hh': Hour in am/pm, padded (01-12)
- 'h': Hour in am/pm, (1-12)
- 'mm': Minute in hour, padded (00-59)
- 'm': Minute in hour (0-59)
- 'ss': Second in minute, padded (00-59)
- 's': Second in minute (0-59)
- 'a': am/pm marker
- 'Z': 4 digit (+sign) representation of the timezone offset (-1200-+1200)
- format string can also be one of the following predefined localizable formats:
- 
- 'medium': equivalent to 'MMM d, y h:mm:ss a' for en_US locale (e.g. Sep 3, 2010 12:05:08 pm)
- 'short': equivalent to 'M/d/yy h:mm a' for en_US locale (e.g. 9/3/10 12:05 pm)
- 'fullDate': equivalent to 'EEEE, MMMM d,y' for en_US locale (e.g. Friday, September 3, 2010)
- 'longDate': equivalent to 'MMMM d, y' for en_US locale (e.g. September 3, 2010
- 'mediumDate': equivalent to 'MMM d, y' for en_US locale (e.g. Sep 3, 2010)
- 'shortDate': equivalent to 'M/d/yy' for en_US locale (e.g. 9/3/10)
- 'mediumTime': equivalent to 'h:mm:ss a' for en_US locale (e.g. 12:05:08 pm)
- 'shortTime': equivalent to 'h:mm a' for en_US locale (e.g. 12:05 pm)
- */
-
 function toInt(str) {
   return parseInt(str, 10) || 0
 }
@@ -44,8 +10,12 @@ function padNumber(num, digits, trim) {
     num = -num
   }
   num = '' + num
-  while (num.length < digits) num = '0' + num
-  if (trim) num = num.substr(num.length - digits)
+  while (num.length < digits) {
+    num = '0' + num
+  }
+  if (trim) {
+    num = num.substr(num.length - digits)
+  }
   return neg + num
 }
 
diff --git a/src/parser/index.js b/src/parser/index.js
index 779c099..c58e9ac 100644
--- a/src/parser/index.js
+++ b/src/parser/index.js
@@ -1,4 +1,4 @@
-import { Anot, msie, Cache } from '../seed/core'
+import { Anot, Cache } from '../seed/core'
 import { clearString, stringPool, fill, rfill, dig } from '../vtree/clearString'
 
 var keyMap = Anot.oneObject(
@@ -105,18 +105,6 @@ export function makeHandle(body) {
   if (rhandleName.test(body)) {
     body = body + '($event)'
   }
-  /* istanbul ignore if */
-  if (msie < 9) {
-    body = body.replace(rfixIE678, function(a, b, c) {
-      return (
-        '__vmodel__.' +
-        b +
-        '.call(__vmodel__' +
-        (/\S/.test(c) ? ',' + c : '') +
-        ')'
-      )
-    })
-  }
   return body
 }
 export function createGetter(expr, type) {
diff --git a/src/renders/Directive.js b/src/renders/Directive.js
index 75654d0..c123ad9 100644
--- a/src/renders/Directive.js
+++ b/src/renders/Directive.js
@@ -1,4 +1,4 @@
-import { Anot, inBrowser } from '../seed/core'
+import { Anot } from '../seed/core'
 
 import { Action, protectedMenbers } from '../vmodel/Action'
 
@@ -11,13 +11,13 @@ import { Action, protectedMenbers } from '../vmodel/Action'
 export function Directive(vm, binding, vdom, render) {
   var type = binding.type
   var decorator = Anot.directives[type]
-  if (inBrowser) {
-    var dom = Anot.vdom(vdom, 'toDOM')
-    if (dom.nodeType === 1) {
-      dom.removeAttribute(binding.attrName)
-    }
-    vdom.dom = dom
+
+  var dom = Anot.vdom(vdom, 'toDOM')
+  if (dom.nodeType === 1) {
+    dom.removeAttribute(binding.attrName)
   }
+  vdom.dom = dom
+
   var callback = decorator.update
     ? function(value) {
         if (!render.mount && /css|visible|duplex/.test(type)) {
diff --git a/src/renders/domRender.js b/src/renders/domRender.js
index dddff76..0c1e0d1 100644
--- a/src/renders/domRender.js
+++ b/src/renders/domRender.js
@@ -1,10 +1,4 @@
-import {
-  Anot,
-  config,
-  inBrowser,
-  delayCompileNodes,
-  directives
-} from '../seed/core'
+import { Anot, config, delayCompileNodes, directives } from '../seed/core'
 import { fromDOM } from '../vtree/fromDOM'
 import { fromString } from '../vtree/fromString'
 
@@ -173,11 +167,11 @@ Render.prototype = {
       //推算出指令类型
       var type = dirs['ms-important'] === $id ? 'important' : 'controller'
       //推算出用户定义时属性名,是使用ms-属性还是:属性
-      var attrName = 'ms-' + type in attrs ? 'ms-' + type : ':' + type
+      var _tmp = 'ms-' + type
+      var attrName = _tmp in attrs ? _tmp : ':' + type
+
+      delete attrs[attrName]
 
-      if (inBrowser) {
-        delete attrs[attrName]
-      }
       var dir = directives[type]
       scope = dir.getScope.call(this, $id, scope)
       if (!scope) {
@@ -237,13 +231,11 @@ Render.prototype = {
   complete() {
     this.yieldDirectives()
     this.beforeReady()
-    if (inBrowser) {
-      var root = this.root
-      if (inBrowser) {
-        var rootDom = Anot.vdom(root, 'toDOM')
-        groupTree(rootDom, root.children)
-      }
-    }
+
+    var root = this.root
+
+    var rootDom = Anot.vdom(root, 'toDOM')
+    groupTree(rootDom, root.children)
 
     this.mount = true
     var fn
@@ -271,9 +263,9 @@ Render.prototype = {
       }
       for (var i = 0, binding; (binding = bindings[i++]); ) {
         var dir = directives[binding.type]
-        if (!inBrowser && /on|duplex|active|hover/.test(binding.type)) {
-          continue
-        }
+        // if (!inBrowser && /on|duplex|active|hover/.test(binding.type)) {
+        //   continue
+        // }
         if (dir.beforeInit) {
           dir.beforeInit.call(binding)
         }
diff --git a/src/seed/browser.js b/src/seed/browser.js
deleted file mode 100644
index 1de9f56..0000000
--- a/src/seed/browser.js
+++ /dev/null
@@ -1,32 +0,0 @@
-export let win =
-  typeof window === 'object' ? window : typeof global === 'object' ? global : {}
-
-export let inBrowser = !!win.location && win.navigator
-/* istanbul ignore if  */
-
-export let document = inBrowser
-  ? win.document
-  : {
-      createElement: Object,
-      createElementNS: Object,
-      documentElement: 'xx',
-      contains: Boolean
-    }
-export var root = inBrowser
-  ? document.documentElement
-  : {
-      outerHTML: 'x'
-    }
-
-let versions = {
-  objectobject: 7, //IE7-8
-  objectundefined: 6, //IE6
-  undefinedfunction: NaN, // other modern browsers
-  undefinedobject: NaN //Mobile Safari 8.0.0 (iOS 8.4.0)
-  //objectfunction chrome 47
-}
-/* istanbul ignore next  */
-export var msie =
-  document.documentMode || versions[typeof document.all + typeof XMLHttpRequest]
-
-export var modern = /NaN|undefined/.test(msie) || msie > 8
diff --git a/src/seed/core.js b/src/seed/core.js
index 32a0000..ebfa712 100644
--- a/src/seed/core.js
+++ b/src/seed/core.js
@@ -1,8 +1,8 @@
-import { win, document, msie, inBrowser, root, modern } from './browser'
 import { Cache } from './cache'
 import { directive, directives, delayCompileNodes } from './directive'
 
-export var window = win
+const root = document.documentElement
+
 export function Anot(el) {
   return new Anot.init(el)
 }
@@ -53,17 +53,7 @@ export function log() {
     Function.apply.call(console.log, console, arguments)
   }
 }
-export {
-  Cache,
-  directive,
-  directives,
-  delayCompileNodes,
-  document,
-  root,
-  msie,
-  modern,
-  inBrowser
-}
+export { Cache, directive, directives, delayCompileNodes, root }
 export function warn() {
   if (hasConsole && Anot.config.debug) {
     var method = console.warn || console.log
@@ -274,12 +264,9 @@ shadowCopy(Anot, {
   error,
   config,
 
-  modern,
-  msie,
   root,
   document,
   window,
-  inBrowser,
 
   isObject,
   range,
diff --git a/src/seed/lang.modern.js b/src/seed/lang.js
similarity index 100%
rename from src/seed/lang.modern.js
rename to src/seed/lang.js
diff --git a/src/vdom/VComment.js b/src/vdom/VComment.js
index 988a013..f9a796d 100644
--- a/src/vdom/VComment.js
+++ b/src/vdom/VComment.js
@@ -1,5 +1,3 @@
-import { document } from '../seed/core'
-
 export function VComment(text) {
   this.nodeName = '#comment'
   this.nodeValue = text
diff --git a/src/vdom/VElement.modern.js b/src/vdom/VElement.modern.js
index 4d7822b..0e6841d 100644
--- a/src/vdom/VElement.modern.js
+++ b/src/vdom/VElement.modern.js
@@ -1,4 +1,4 @@
-import { Anot, document } from '../seed/core'
+import { Anot } from '../seed/core'
 
 export function VElement(type, props, children, isVoidTag) {
   this.nodeName = type
@@ -12,7 +12,7 @@ VElement.prototype = {
     if (this.dom) return this.dom
     var dom,
       tagName = this.nodeName
-    if (Anot.modern && svgTags[tagName]) {
+    if (svgTags[tagName]) {
       dom = createSVG(tagName)
     } else {
       dom = document.createElement(tagName)
@@ -89,6 +89,4 @@ var svgTags = Anot.oneObject(
     'path,polygon,polyline,rect,symbol,text,use,g,svg'
 )
 
-if (Anot.inBrowser) {
-  var supportTemplate = 'content' in document.createElement('template')
-}
+var supportTemplate = 'content' in document.createElement('template')
diff --git a/src/vdom/VText.js b/src/vdom/VText.js
index 19ab661..cdfed6f 100644
--- a/src/vdom/VText.js
+++ b/src/vdom/VText.js
@@ -1,4 +1,4 @@
-import { Anot, document } from '../seed/core'
+import { Anot } from '../seed/core'
 
 export function VText(text) {
   this.nodeName = '#text'
diff --git a/src/vmodel/ProxyArray.js b/src/vmodel/ProxyArray.js
index 2f1daff..03a4109 100644
--- a/src/vmodel/ProxyArray.js
+++ b/src/vmodel/ProxyArray.js
@@ -1,4 +1,4 @@
-import { Anot, ap, platform, modern, isObject } from '../seed/core'
+import { Anot, ap, platform, isObject } from '../seed/core'
 import { Mutation } from './Mutation'
 
 var _splice = ap.splice
@@ -102,9 +102,9 @@ __method__.forEach(function(method) {
 export function listFactory(array, stop, dd) {
   if (!stop) {
     hijackMethods(array)
-    if (modern) {
-      Object.defineProperty(array, '$model', platform.modelAccessor)
-    }
+
+    Object.defineProperty(array, '$model', platform.modelAccessor)
+
     platform.hideProperty(array, '$hashcode', Anot.makeHashCode('$'))
     platform.hideProperty(array, '$events', { __dep__: dd || new Mutation() })
   }
diff --git a/src/vmodel/modern.js b/src/vmodel/modern.js
index 1cc1544..3cade54 100644
--- a/src/vmodel/modern.js
+++ b/src/vmodel/modern.js
@@ -1,4 +1,4 @@
-import { Anot, platform, modern } from '../seed/core'
+import { Anot, platform } from '../seed/core'
 import { $$skipArray } from './reserved'
 import { Action } from './Action'
 import './share'
diff --git a/src/vmodel/proxy.js b/src/vmodel/proxy.js
index 3091c35..21cde20 100644
--- a/src/vmodel/proxy.js
+++ b/src/vmodel/proxy.js
@@ -1,4 +1,4 @@
-import { Anot, platform, isObject, modern } from '../seed/core'
+import { Anot, platform, isObject } from '../seed/core'
 import { $$skipArray } from './reserved'
 import { Mutation } from './Mutation'
 import { Computed } from './Computed'
diff --git a/src/vmodel/share.js b/src/vmodel/share.js
index 363d3b4..9ec06f4 100644
--- a/src/vmodel/share.js
+++ b/src/vmodel/share.js
@@ -1,4 +1,4 @@
-import { Anot, platform, isObject, modern } from '../seed/core'
+import { Anot, platform, isObject } from '../seed/core'
 import { $$skipArray } from './reserved'
 import { Mutation } from './Mutation'
 import { Computed } from './Computed'