依赖更新 && 构建调整 (#60)

* upgrade dependencies

* 更改所有 saladcss 写法

* fix: 升级依赖导致的样式错误

* fix: build vant css

* use es module when pack && webpack scope hoisting

* fix: vue module version

* delete unused npm script

* fix: build:vant script not work

* fix: webpack config format

* fix: build minify vant.js

* fix: captain ui relative link

packages/vant-css/src/search.css

@@ -1,73 +1,71 @@
 @import './common/var.css';
 @import './icon.css';
 
-@component-namespace van {
-  @b search {
-    position: relative;
-    box-sizing: border-box;
-    padding: 4px 15px;
-    background-color: #F2F2F2;
+.van-search {
+  position: relative;
+  box-sizing: border-box;
+  padding: 4px 15px;
+  background-color: #F2F2F2;
 
-    @m focus {
-      padding-right: 50px;
-    }
+  &--focus {
+    padding-right: 50px;
+  }
 
-    @m showcase {
-      padding: 10px;
-      background-color: #f8f8f8;
+  &--showcase {
+    padding: 10px;
+    background-color: #f8f8f8;
 
-      .van-search__input-wrap {
-        border-color: $c-gray-light;
-      }
-    }
-
-    @e input-wrap {
-      position: relative;
-      padding: 8px 24px 8px 35px;
-      border: 1px solid $c-gray-light;
-      border-radius: 4px;
-      background-color: $c-white;
-    }
-
-    @e input {
-      display: block;
-      width: 100%;
-      height: 14px;
-      font-size: 14px;
-      color: $c-gray-dark;
-      border: none;
-      outline: none;
-      -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
-    }
-
-    @e cancel {
-      position: absolute;
-      line-height: 34px;
-      padding: 4px 0;
-      top: 0;
-      right: 10px;
-      font-size: 14px;
-      color: $c-green;
-    }
-
-    .van-icon-search {
-      color: $c-gray-darker;
-      position: absolute;
-      top: 50%;
-      transform: translateY(-50%);
-      left: 10px;
-      font-size: 16px;
-      line-height: 1;
-    }
-
-    .van-icon-clear {
-      font-size: 14px;
-      line-height: 16px;
-      position: absolute;
-      right: 5px;
-      top: 50%;
-      transform: translateY(-50%);
-      color: #888;
+    .van-search__input-wrap {
+      border-color: $c-gray-light;
     }
   }
+
+  &__input-wrap {
+    position: relative;
+    padding: 8px 24px 8px 35px;
+    border: 1px solid $c-gray-light;
+    border-radius: 4px;
+    background-color: $c-white;
+  }
+
+  &__input {
+    display: block;
+    width: 100%;
+    height: 14px;
+    font-size: 14px;
+    color: $c-gray-dark;
+    border: none;
+    outline: none;
+    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
+  }
+
+  &__cancel {
+    position: absolute;
+    line-height: 34px;
+    padding: 4px 0;
+    top: 0;
+    right: 10px;
+    font-size: 14px;
+    color: $c-green;
+  }
+
+  .van-icon-search {
+    color: $c-gray-darker;
+    position: absolute;
+    top: 50%;
+    transform: translateY(-50%);
+    left: 10px;
+    font-size: 16px;
+    line-height: 1;
+  }
+
+  .van-icon-clear {
+    font-size: 14px;
+    line-height: 16px;
+    position: absolute;
+    right: 5px;
+    top: 50%;
+    transform: translateY(-50%);
+    color: #888;
+  }
 }