function notMyFunction(a, cb) {
    if (a === 'latest') {
        cb(null, '123');
    } else {
        cb('error', null);
    }
}
function deploy(someVariable) {
    return new Promise((resolve, reject) => {
        notMyFunction(someVariable, resolve);
    });
}
deploy('latest').then((time) => {
    // I need access to 123, not null
    console.log(time)
}, (err) => {
    console.log(err)
})