BUG: 微信开发者工具 1.01.171018(mac)

在开发者工具中调试: App.onLaunch中调用wx.getNetworkType({}) 没有 res 返回值

App({

    onLaunch: function () {

        wx.getNetworkType({

            success: res => {

                console.log(res)

            }

        })

    }

})