Carebot.js

const XMLHttpRequest = require("xmlhttprequest").XMLHttpRequest();
const mysql = require('mysql');
const config = require('./config');
const pool = mysql.createPool({
  connectionLimit: 10,
  host: config.dbhost,
  user: config.dbuser,
  password: config.dbpass,
  database: config.dbname
});

pool.getConnection( ( err, connection ) => {
  //Use the connection
  connection.query('SELECT name from birthday where DATE_FORMAT(birthday, '%m-%d') = DATE_FORMAT(now(), '%m-%d')', ( error, results, fields ) => {
    //When done with the connection, release it
    connection.release();
    //Handle error after the release
    if ( error ) throw error;
    //Get the list of promises (async requests) for the HTTP requests
    let promises = postMessage(results);
    //Once all the promises have resolved, kill the process
    Promise.all(promises).then((results) => {
      process.exit();
    });
  });
});

postMessage = (results) => {
  //Return a Promise object that resolves when the HTTP request is done
  return results.map( (item ) => {
    return new Promise ( (resolve, reject) => {
      let http = new XMLHttpRequest();
      let postHook = < PLATFORM_API_TO_POST_MESSAGE_TO >
      content = { Content: "![birthday](bday-gif-link) \n" + "Happy Birthday " + firstName + "!!" }

      http.open('POST', postHook, true);

      //This is the callback method that occurs after the HTTP request finishes
      http.onLoad = () => {
        //once we finish the HTTP request, resolve the promise
        resolve(http.responseText);
      }

      http.setRequestHeader('Content-Type', 'application/json;charset=UTF-8');
      http.setRequestHeader('X-Auth-Token', '<You may not need this>')
      http.send(JSON.stringify(content))
    });
  });
}