vow promises

test.js

var vow = require('vow'),
    request = require('request'),
    handler = 'http://api.geonames.org/postalCodeLookupJSON?postalcode=6600&country=AT&username=demo';

function getData(remote) {

    if(remote) {
        var promise = new vow.promise();

        request(remote, function(err, req, body) {
            promise.fulfill(body);
        });

        return promise;
    } else {
        return vow.resolve('none');
    }

}

vow.all([
        getData(handler),
        getData(),
        getData(handler),
        getData()
    ])
    .then(function(data) {
        console.log('------------', data);
    });

getData()
    .then(function(data) {
        console.log('synchronously', data);
    });

getData(handler)
    .then(function(data) {
        console.log('asynchronously', data);
    });