vant/packages/utils/use/index.js

import useBem from './bem';
import useSfc from './sfc';
import useI18n from './i18n';

export function use(name) {
  name = 'van-' + name;
  return [useSfc(name), useBem(name), useI18n(name)];
}

export function useSlots({ $slots, $scopedSlots }) {
  return (name, props) => {
    if ($scopedSlots[name]) {
      return $scopedSlots[name](props);
    }
    return $slots[name];
  };
}