text: // 云函数入口文件
  const cloud = require('wx-server-sdk')
  
  cloud.init()
  
  // 云函数入口函数
  exports.main = async (event, context) => {
    const wxContext = cloud.getWXContext()
   
    return {
      event,
      openid: wxContext.OPENID,
      appid: wxContext.APPID,
      unionid: wxContext.UNIONID,
    }
  }