微信小程序怎么区分线上和测试环境

{ "debug":true}

globalData: {
      host: ‘XXX‘,
      isDebug:false,
  }

let DEBUG = false;
let baseUrl = ‘‘
var promise =new Promise((resolve, reject) => {
  wx.request({
    url: ‘https://www.zhiyunyi.net//host.json‘,//json数据地址
    headers: {
      ‘Content-Type‘: ‘application/json‘
    },
    success: function (res) {
      console.log(res)
      let obj=res.data;
      getApp().globalData.isDebug=obj.debug
      if(obj.debug){
        getApp().globalData.host=‘https://courtdev.zhiyunyi.net‘//这是测试环境的host
        resolve(getApp().globalData.host); // 这里是关键
      }else{
        getApp().globalData.host=‘https://court.zhiyunyi.net‘//这是线上环境的host
        resolve(getApp().globalData.host); // 这里是关键
      }
    }
  })
})
promise.then(res=>{
 baseUrl=res
})