fix: merge replaced Object.assign

https://github.com/d2-projects/d2-admin/issues/342

src/components/d2-container/components/mixins/bs.js

@@ -1,4 +1,6 @@
+import { merge } from 'lodash'
 import BScroll from 'better-scroll'
+
 export default {
   props: {
     // 滚动优化的选项
@@ -22,7 +24,7 @@ export default {
   methods: {
     scrollInit () {
       // 初始化 bs
-      this.BS = new BScroll(this.$refs.wrapper, Object.assign({
+      this.BS = new BScroll(this.$refs.wrapper, merge({
         mouseWheel: true,
         click: true,
         scrollbar: {

src/components/d2-mde/index.vue

@@ -3,8 +3,10 @@
 </template>
 
 <script>
+import { merge } from 'lodash'
 import SimpleMDE from 'simplemde'
 import 'simplemde/dist/simplemde.min.css'
+
 export default {
   name: 'd2-mde',
   props: {
@@ -44,7 +46,7 @@ export default {
     // 初始化
     init () {
       // 合并参数
-      const config = Object.assign({}, this.defaultConfig, this.config)
+      const config = merge({}, this.defaultConfig, this.config)
       // 初始化
       this.mde = new SimpleMDE({
         ...config,