API to get your Medium posts made for Google Cloud Functions

api.js

const functions = require('firebase-functions');
var XMLHttpRequest = require("xmlhttprequest").XMLHttpRequest;
var xmlParser = require('fast-xml-parser');

const POSTS_URL = 'https://medium.com/feed/@suru.dissanaike';

const FetchData = (response) => {
    var request = new XMLHttpRequest();
    request.onreadystatechange = () => {
        if (request.readyState == 4 && request.status == 200) {

            let xmlData = request.responseText;
            if (xmlParser.validate(xmlData) === true) { //optional (it'll return an object in case it's not valid)
                var jsonObj = xmlParser.parse(xmlData);
                response.send(jsonObj.rss.channel.item)
            }
        }
    }
    request.open("GET", POSTS_URL, true);
    request.send();
}

exports.getMediumPosts = functions.https.onRequest((request, response) => {
    response.set('Access-Control-Allow-Origin', "*")
    response.set('Access-Control-Allow-Methods', 'GET, POST')
    FetchData(response)
});