Resolved: How can i return something from a function like this?

function getUserInv(steamid) {
    manager.getUserInventoryContents(steamid, 440, 2, true, function(err, inventory) {
        if(err) {
            console.log(err);
        } else {
            return inventory
        };
    });
};

console.log(getUserInv('<my steamid>')) //returns undefined

function getUserInv(steamid) {
    return new Promise((resolve, reject) => {
    manager.getUserInventoryContents(steamid, 440, 2, true, function(err, inventory) {
        if(err) {
            reject(err);
        } else {
            resolve(inventory)
        };
    });
}
};

getUserInv('<my steamid>').then(console.log)