升级element-ui到2.8.2

package.json

    "axios": "0.17.1",
    "babel-plugin-component": "0.10.1",
    "babel-polyfill": "6.26.0",
    "element-ui": "2.3.2",
    "element-ui": "2.8.2",
    "gulp": "3.9.1",
    "gulp-concat": "2.6.1",
    "gulp-load-plugins": "1.5.0",
    "gulp-shell": "0.6.5",
    "lodash": "4.17.5",
    "node-sass": "4.9.0",
    "npm": "^6.9.0",
    "sass-loader": "6.0.6",
    "svg-sprite-loader": "3.7.3",
    "vue": "2.5.2",

src/assets/scss/_base.scss

    text-transform: uppercase;
    white-space: nowrap;
    color: #fff;
    
    &-lg,
    &-mini {
      margin: 0 5px;
    }
  }
}
.el-table__expand-icon {
  display: inline-block;
  width: 14px;
  vertical-align: middle;
  margin-right: 5px;
}

src/views/modules/sys/menu.vue

        <el-button v-if="isAuth('sys:menu:save')" type="primary" @click="addOrUpdateHandle()">新增</el-button>
      </el-form-item>
    </el-form>
    <el-table
      :data="dataList"
      row-key="menuId"
      border
      style="width: 100%;">
      style="width: 100%; ">
      <el-table-column
        prop="menuId"
        header-align="center"
        align="center"
        width="80"
        label="ID">
      </el-table-column>
      <table-tree-column
        prop="name"
        header-align="center"
        treeKey="menuId"
        width="150"
        label="名称">
      </table-tree-column>
        min-width="150"
        label="名称" >
      </el-table-column>
      <el-table-column
        prop="parentName"
        header-align="center"
</template>
<script>
  import TableTreeColumn from '@/components/table-tree-column'
  import AddOrUpdate from './menu-add-or-update'
  import { treeDataTranslate } from '@/utils'
  export default {
      }
    },
    components: {
      TableTreeColumn,
      AddOrUpdate
    },
    activated () {