如何修改以下代码以避免嵌套Promises？

需要在Firestore中插入请求承诺的响应。

我还想知道当Firestore Promise解决后，如何将jsonresponse可用以将response.status发送给调用方应用程序。

const functions = require('firebase-functions');
const rp = require('request-promise')
var admin = require("firebase-admin");

var serviceaccount = require("./service_key.json");

admin.initializeApp({
   credential: admin.credential.cert(serviceaccount),databaseURL: "https://melitest-5bc38.firebaseio.com"
});

let db = admin.firestore()

exports.customHttpRequest = functions.https.onRequest((request,response) => { 

const url = 'https://jsonplaceholder.typicode.com/users'

var options = {
    uri: url,method: "GET",json: true
};

rp(options).then((jsonresponse) => {
     for(var i = 0 ; i < jsonresponse.length; i++){
        var obj = jsonresponse[i]
        var docid = obj.id

        // Warning: Avoid nesting promises.eslint(promise/no-nesting)
        db.collection("scrapeusertest").doc(String(docid)).set(obj).then(() =>{ 
            console.log(`Data was upload to firestore and the response was: ${jsonresponse}`)
            response.status(200).send(jsonresponse);
        }).catch(error =>{
            console.log(`Error uploading data Firebase: ${error}`)
        });

    }
    return console.log("Data was send")
})
.catch((err) => {
    console.log('Error:',err)

});
    return null;
});