Modify package structure

src/components/borderBox2/index.js

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+import BorderBox2 from './src/main.vue'
+
+export default function (Vue) {
+  Vue.component(BorderBox2.name, BorderBox2)
+}

src/components/borderBox2/src/main.vue

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+<template>
+  <div class="dv-border-box-2" :ref="ref">
+    <svg class="dv-border-svg-container">
+      <polyline class="dv-bb2-line1"
+        :points="`2, 2 ${width - 2} ,2 ${width - 2}, ${height - 2} 2, ${height - 2} 2, 2`" />
+      <polyline class="dv-bb2-line2"
+        :points="`6, 6 ${width - 6}, 6 ${width - 6}, ${height - 6} 6, ${height - 6} 6, 6`" />
+      <circle cx="11" cy="11" r="1" />
+      <circle :cx="width - 11" cy="11" r="1" />
+      <circle :cx="width - 11" :cy="height - 11" r="1" />
+      <circle cx="11" :cy="height - 11" r="1" />
+    </svg>
+
+    <div class="border-box-content">
+      <slot></slot>
+    </div>
+  </div>
+</template>
+
+<script>
+import autoResize from '../../../mixin/autoResize'
+
+export default {
+  name: 'DvBorderBox2',
+  mixins: [autoResize],
+  data () {
+    return {
+      ref: 'border-box-2'
+    }
+  }
+}
+</script>
+
+<style lang="less">
+.dv-border-box-2 {
+  position: relative;
+  width: 100%;
+  height: 100%;
+
+  .dv-border-svg-container {
+    position: absolute;
+    width: 100%;
+    height: 100%;
+    top: 0px;
+    left: 0px;
+
+    polyline {
+      fill: none;
+      stroke-width: 1;
+    }
+
+    circle {
+      fill: #fff;
+    }
+  }
+
+  .dv-bb2-line1 {
+    stroke: #fff;
+  }
+
+  .dv-bb2-line2 {
+    stroke: fade(#fff, 60);
+  }
+
+  .border-box-content {
+    position: relative;
+    width: 100%;
+    height: 100%;
+  }
+}
+</style>