vant/packages/vant-cli/src/commands/clean.ts

import { emptyDir } from 'fs-extra';
import { ES_DIR, LIB_DIR, DIST_DIR, SITE_DIST_DIR } from '../common/constant';

export async function clean() {
  await Promise.all([
    emptyDir(ES_DIR),
    emptyDir(LIB_DIR),
    emptyDir(DIST_DIR),
    emptyDir(SITE_DIST_DIR)
  ]);
}