master.js

const request = require('request-promise');

var API_KEY = process.env.API_KEY;

var urls = { deals: 'https://api.pipedrive.com/v1/deals?start=0&api_token=' + API_KEY,
             activities: 'https://api.pipedrive.com/v1/activities?start=0&api_token=' + API_KEY };

function getIt (url) {
    return request(url).then(function (body) {
        return JSON.parse(body).data;
    }); 
} 

function add (i) {
    return request.post('https://api.pipedrive.com/v1/activities?api_token=' + API_KEY, {
            form: {'subject': '4506-T',
                   'deal_id': i}});
}
                                                                                                                                                    
Promise.all([getIt(urls.deals), getIt(urls.activities)]).then(function(results) {

    var deals = results[0];
    var activities = results[1];

    var apps = {}; 

    /*  
    for (var i in deals) {
        if (deals[i].stage_id === 2) {
            apps[deals[i].id] = deals[i];
        }
    }
    */

    deals.forEach(function(){
        if (deals[i].stage_id === 2) {
            apps[deals[i].id] = deals[i];
        }   
    }); 

    console.log(apps);

});