const result = await clc.aggregate()
  .match({
    activityId, 
    status: _.in(['Paying', 'Refunding'])
  })
  .count('pendingOrderCounts')
  .end()
  const {pendingOrderCounts} = result
  console.log('result', result)
  console.log('pendingOrderCounts', pendingOrderCounts)

返回值与文档不符。返回值如下：