diff --git a/dist/behaviors/button.js b/dist/behaviors/button.js
deleted file mode 100644
index 82ee5675..00000000
--- a/dist/behaviors/button.js
+++ /dev/null
@@ -1,57 +0,0 @@
-export default Behavior({
-  properties: {
-    loading: Boolean,
-    // 在自定义组件中，无法与外界的 form 组件联动，暂时不开放
-    // formType: String,
-    openType: String,
-    appParameter: String,
-    // 暂时不开放，直接传入无法设置样式
-    // hoverClass: {
-    //   type: String,
-    //   value: 'button-hover'
-    // },
-    hoverStopPropagation: Boolean,
-    hoverStartTime: {
-      type: Number,
-      value: 20
-    },
-    hoverStayTime: {
-      type: Number,
-      value: 70
-    },
-    lang: {
-      type: String,
-      value: 'en'
-    },
-    sessionFrom: {
-      type: String,
-      value: ''
-    },
-    sendMessageTitle: String,
-    sendMessagePath: String,
-    sendMessageImg: String,
-    showMessageCard: String
-  },
-
-  methods: {
-    bindgetuserinfo(event = {}) {
-      this.triggerEvent('getuserinfo', event.detail || {});
-    },
-
-    bindcontact(event = {}) {
-      this.triggerEvent('contact', event.detail || {});
-    },
-
-    bindgetphonenumber(event = {}) {
-      this.triggerEvent('getphonenumber', event.detail || {});
-    },
-
-    bindopensetting(event = {}) {
-      this.triggerEvent('opensetting', event.detail || {});
-    },
-
-    binderror(event = {}) {
-      this.triggerEvent('error', event.detail || {});
-    }
-  }
-});
diff --git a/dist/behaviors/touch.js b/dist/behaviors/touch.js
deleted file mode 100644
index 19ce84a2..00000000
--- a/dist/behaviors/touch.js
+++ /dev/null
@@ -1,22 +0,0 @@
-export default Behavior({
-  methods: {
-    touchStart(event) {
-      this.direction = '';
-      this.deltaX = 0;
-      this.deltaY = 0;
-      this.offsetX = 0;
-      this.offsetY = 0;
-      this.startX = event.touches[0].clientX;
-      this.startY = event.touches[0].clientY;
-    },
-
-    touchMove(event) {
-      const touch = event.touches[0];
-      this.deltaX = touch.clientX - this.startX;
-      this.deltaY = touch.clientY - this.startY;
-      this.offsetX = Math.abs(this.deltaX);
-      this.offsetY = Math.abs(this.deltaY);
-      this.direction = this.offsetX > this.offsetY ? 'horizontal' : this.offsetX < this.offsetY ? 'vertical' : '';
-    }
-  }
-});
diff --git a/dist/behaviors/transition.js b/dist/behaviors/transition.js
deleted file mode 100644
index 5fca3ab4..00000000
--- a/dist/behaviors/transition.js
+++ /dev/null
@@ -1,54 +0,0 @@
-export default function(showDefaultValue) {
-  return Behavior({
-    properties: {
-      customStyle: String,
-      show: {
-        value: showDefaultValue,
-        type: Boolean,
-        observer(value) {
-          if (value) {
-            this.show();
-          } else {
-            this.setData({
-              type: 'leave'
-            });
-          }
-        }
-      },
-      duration: {
-        type: Number,
-        value: 300
-      }
-    },
-
-    data: {
-      type: '',
-      inited: false,
-      display: false
-    },
-
-    attached() {
-      if (this.data.show) {
-        this.show();
-      }
-    },
-
-    methods: {
-      show() {
-        this.setData({
-          inited: true,
-          display: true,
-          type: 'enter'
-        });
-      },
-
-      onAnimationEnd() {
-        if (!this.data.show) {
-          this.setData({
-            display: false
-          });
-        }
-      }
-    }
-  });
-}
diff --git a/dist/common/classnames.js b/dist/common/classnames.js
deleted file mode 100644
index 12904405..00000000
--- a/dist/common/classnames.js
+++ /dev/null
@@ -1,29 +0,0 @@
-const hasOwn = {}.hasOwnProperty;
-
-export default function classNames() {
-  const classes = [];
-
-  for (let i = 0; i < arguments.length; i++) {
-    const arg = arguments[i];
-    if (!arg) continue;
-
-    const argType = typeof arg;
-
-    if (argType === 'string' || argType === 'number') {
-      classes.push(arg);
-    } else if (Array.isArray(arg) && arg.length) {
-      const inner = classNames.apply(null, arg);
-      if (inner) {
-        classes.push(inner);
-      }
-    } else if (argType === 'object') {
-      for (const key in arg) {
-        if (hasOwn.call(arg, key) && arg[key]) {
-          classes.push(key);
-        }
-      }
-    }
-  }
-
-  return classes.join(' ');
-};
diff --git a/dist/common/index.wxss b/dist/common/index.wxss
deleted file mode 100644
index a042020a..00000000
--- a/dist/common/index.wxss
+++ /dev/null
@@ -1 +0,0 @@
-.van-ellipsis{overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.van-multi-ellipsis--l2{overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.van-multi-ellipsis--l3{overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical}.van-clearfix::after{content:'';display:table;clear:both}.van-hairline,.van-hairline--bottom,.van-hairline--left,.van-hairline--right,.van-hairline--surround,.van-hairline--top,.van-hairline--top-bottom{position:relative}.van-hairline--bottom::after,.van-hairline--left::after,.van-hairline--right::after,.van-hairline--surround::after,.van-hairline--top-bottom::after,.van-hairline--top::after,.van-hairline::after{content:'';position:absolute;top:0;left:0;width:200%;height:200%;-webkit-transform:scale(.5);transform:scale(.5);-webkit-transform-origin:0 0;transform-origin:0 0;pointer-events:none;box-sizing:border-box;border:0 solid #e5e5e5}.van-hairline--top::after{border-top-width:1px}.van-hairline--left::after{border-left-width:1px}.van-hairline--right::after{border-right-width:1px}.van-hairline--bottom::after{border-bottom-width:1px}.van-hairline--top-bottom::after{border-width:1px 0}.van-hairline--surround::after{border-width:1px}
\ No newline at end of file
diff --git a/dist/utils/index.js b/dist/utils/index.js
deleted file mode 100644
index 71ddfc64..00000000
--- a/dist/utils/index.js
+++ /dev/null
@@ -1,13 +0,0 @@
-function isDef(value) {
-  return value !== undefined && value !== null;
-}
-
-function isObj(x) {
-  const type = typeof x;
-  return x !== null && (type === 'object' || type === 'function');
-}
-
-export {
-  isObj,
-  isDef
-};
diff --git a/package.json b/package.json
index 3ff1f92a..1c17d286 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
     "dev": "node build/dev.js",
     "lint": "eslint ./packages --ext .js",
     "release": "sh build/release.sh",
-    "build:lib": "NODE_ENV=production node build/compiler.js",
+    "build:lib": "rm -rf dist && NODE_ENV=production node build/compiler.js",
     "build:site": "rm -rf docs/dist && cross-env NODE_ENV=production webpack --config build/webpack.doc.prd.js && gh-pages -d docs/dist",
     "build:changelog": "vant-doc changelog --tag v0.2.0 ./docs/markdown/changelog.generated.md"
   },