In questo listato var CONFIG = {
    ORDER_SIDE: 'BID',
    SIZE: 1,
    MAX_OPERATIONS: 8,
    LEVELS: {
        BID: 6,
        ASK: 6
    },
    SECONDS: 5,
    MONITORING_MODE: 'MONITORA_yourlevel' // or 'MONITORA_1Level'
};

var separator = "---------------------------------------------------\r\n";

var BookUtils = {
    getSideData: function (book, side) {
        return (side === 'BID') ? book.Bid : book.Ask;
    },

    getPrice: function (book, side, level) {
        var sideData = this.getSideData(book, side);
        return sideData.Price(level);
    },

    getQuantity: function (book, side, level) {
        var sideData = this.getSideData(book, side);
        return sideData.Quantity(level);
    },

    getBookState: function (book) {
        return {
            bidPrice: book.Bid.Price(0),
            bidQuantity: book.Bid.Quantity(0),
            askPrice: book.Ask.Price(0),
            askQuantity: book.Ask.Quantity(0)
        };
    }
};

var OrderUtils = {
    execOrder: function (side, stock, price, size) {
        return (side === 'BID') ? OrderManager.Buy(stock, price, size) : OrderManager.Sell(stock, price, size);
    },

    updateOrderContext: function (order, side, price) {
        UserContext.order.current = order;
        UserContext.prices[side].oldLevel = price;
        return order;
    },

    processOrModOrder: function (side, stock, price) {
        var currentOrder = UserContext.order.current;
        if (currentOrder) {
            return (currentOrder.Price === price) ? currentOrder 
                : this.updateOrderContext(OrderManager.Modify(currentOrder.OrderCode, price), side, price);
        }
        return this.updateOrderContext(this.execOrder(side, stock, price, CONFIG.SIZE), side, price);
    },

    deleteOrder: function (orderCode) {
        return OrderManager.Delete(orderCode);
    }
};

function formatMessage(template, data) {
    return template.replace(/\{(\w+)\}/g, function(match, key) {
        return typeof data[key] !== 'undefined' ? data[key] : match;
    });
}

var messages = {
    'Initialization Complete': "Inizializzazione completata:\nBid Price 0: {bidPrice}\nAsk Price 0: {askPrice}\n",
    'Order Action': 'Ordine {action}: {orderCode}\n',
    'Price Variation': "Livello da {lastLevel} all'attuale livello {priceLevel}\n",
    'Order Deleted': 'Ordine cancellato: {orderCode}\n',
    'PriceChange': "ULTIMO PREZZO: {currentPrice}, Precedente: {previousPrice}, Ora: {currentTime}\r\n" + separator,
    'message': "{message}\r\n" + separator
};

var Helper = {
    formatState: function (bookState) {
        return separator + 
               "Bid Price \tBid Quant.\tAsk Price \tAsk Quant.\r\n" + 
               separator + 
               bookState.bidPrice + "\t\t" + bookState.bidQuantity + "\t\t" + 
               bookState.askPrice + "\t\t" + bookState.askQuantity + "\r\n" + 
               separator + 
               "Numero Operazione: " + UserContext.status.numOperazione + "\r\n" + 
               separator;
    },

    log: function (type, data) {
        var template = messages[type];
        
        if (template) {
            var message = formatMessage(template, data || {});
            
            // Aggiungiamo lo stato del libro se necessario
            if (type === 'Initialization Complete' || type === 'Price Variation') {
                message += this.formatState(BookUtils.getBookState(UserContext.book));
            }
            
            Log(separator + message);
        }
    },

    priceDirection: function (targetPrice, oldPrice) {
        return (targetPrice > oldPrice) ? 1 : ((targetPrice < oldPrice) ? -1 : 0);
    }
};

function initializeTradeContext(book) {
    return {
        book: book,
        order: { current: null },
        status: { run: true, secondCount: 0, numOperazione: 1 },
        prices: {
            BID: { current: BookUtils.getPrice(book, 'BID', 0), oldLevel: 0 },
            ASK: { current: BookUtils.getPrice(book, 'ASK', 0), oldLevel: 0 }
        }
    };
}

function getTargetPriceLevel(side) {
    var level = (CONFIG.MONITORING_MODE === 'MONITORA_1Level' ? 1 : CONFIG.LEVELS[side]);
    return level - 1;
}

function priceUpdate(side, book) {
    var context = UserContext;
    var status = context.status;
    var prices = context.prices;
    var targetPriceLevel = getTargetPriceLevel(side);
    var targetPrice = BookUtils.getPrice(book, side, targetPriceLevel);
    var oldPrice = prices[side].oldLevel;

    if (targetPrice !== oldPrice) {
        var newOrder = OrderUtils.processOrModOrder(side, stock, targetPrice);
        if (newOrder) {
            prices[side].current = targetPrice;
            var payload = { 
                lastLevel: CONFIG.LEVELS[side] + Helper.priceDirection(targetPrice, oldPrice), 
                priceLevel: targetPriceLevel 
            };
            Helper.log('Price Variation', payload);
            status.secondCount = 0;
            status.numOperazione++;
        }
    }
}

function checkOps() {
    var status = UserContext.status;
    var currentOrder = UserContext.order.current;
    if (status.numOperazione >= CONFIG.MAX_OPERATIONS) {
        if (currentOrder) {
            var deletedOrder = OrderUtils.deleteOrder(currentOrder.OrderCode);
            Helper.log('Order Deleted', { orderCode: deletedOrder.OrderCode });
            status.run = false;
            return true;
        }
    }
    return false;
}

function manageCycle() {
    var status = UserContext.status;
    if (checkOps()) return;
    if (status.secondCount >= CONFIG.SECONDS) {
        priceUpdate(CONFIG.ORDER_SIDE, UserContext.book);
    }
}

function setupTradeContext() {
    var book = Book(ps);
    UserContext = initializeTradeContext(book);
    Helper.log('Initialization Complete', { 
        bidPrice: UserContext.prices.BID.current, 
        askPrice: UserContext.prices.ASK.current 
    });
    manageCycle();
}

function marketEvent() {
    if (!UserContext.status.run) return;
    var eventType = SystemContext.EventType;
    var book = UserContext.book || Book(ps);
    UserContext.book = book;

    switch(eventType) {
        case TSEventType.Price:
            var currentPrice = Val(ps, "LAST");
            if (UserContext.lastPrice !== currentPrice) {
                var currentTime = Now().ToString("HH:mm:ss.ff");
                Helper.log('PriceChange', { 
                    currentPrice: currentPrice, 
                    previousPrice: UserContext.lastPrice, 
                    currentTime: currentTime 
                });
                UserContext.lastPrice = currentPrice;
            }
            break;
        case TSEventType.Time:
            UserContext.status.secondCount++;
            manageCycle();
            break;
    }
}

if (SystemContext.IsFirst) {
    setupTradeContext();
}

marketEvent();  avrei un paio di osservazioni da fare su getSideData in BookUtils: 1  Invece di usare un'espressione ternaria, conviene o meno usare direttamente l'accesso dinamico agli oggetti? 

getSideData: function (book, side) {
    return book[side];  
}  2 Questa funzione viene utilizzata ripetutamente per ottenere i dati Bid o Ask. Potrebbe essere utile memorizzare il risultato in una variabile locale all'interno delle funzioni getPrice e getQuantity per evitare chiamate ripetute ?