applte/components/dist/col/index.wxml

<wxs src="../wxs/utils.wxs" module="utils" />
<wxs src="./index.wxs" module="computed" />

<view
  class="custom-class {{ utils.bem('col', [span]) }} {{ offset ? 'van-col--offset-' + offset : '' }}"
  style="{{ computed.rootStyle({ gutter }) }}"
>
  <slot />
</view>