Node JS Script to check Binance for open orders and notify when they are filled.

openOrderMonitor.js

// This script will monitor your open orders on Binance.
// You'll get alerted (in Terminal and via voice prompt) when an order changes status (e,g, filled, canceled).

// Save locally, add your api key, and run with "node <script name>" in Terminal.

// If you don't have node installed: 
// brew install node 

// Install other packages used:
// npm i requirejs binance-api-node say dateformat

binanceNode  = require('binance-api-node')["default"];
const api = binanceNode({apiKey: '*****', apiSecret: '****'});
const say = require('say'); // for voice prompts
const df = require('dateformat'); // for human-readable time stamps

var frequency = 60*1000; // 60 secs - frequency at which to update orders

var orders = {};

var openOrders = async function(){
    // api query wrapped in try/catch to prevent crashing
    try {
        var res = await api.openOrders();
    } catch (err) {
        console.log('ERROR in openOrders, trying again:', err);
        setTimeout(openOrders, frequency);  // retry
        return false;
    }

    for( i in res){
        // save the open order that we
        var order = res[i];
        var orderId = order['orderId'];
        if (!(orderId in orders)) {
            console.log(order);
            orders[orderId] = order;
            // check back in 'frequency' seconds, offsetting each order by 1/10 sec to avoid rate limits
            setTimeout(checkOrderStatus, frequency+i*100, orderId);
        }
    }

    console.log(df(new Date(), 'HH:MM:ss.l'), '---', Object.keys(orders).length, 'orders');

    // recheck our open orders every n seconds
    setTimeout(openOrders, frequency);
}

// updates an order and notifies when it's status changes.
var checkOrderStatus = async function(orderId){
    var o = orders[orderId];

    // api query wrapped in try/catch to prevent crashing
    try {
        var res = await api.getOrder({symbol:o['symbol'], orderId: orderId});
    } catch (err) {
        console.log('ERROR in checkOrderStatus, trying again:', err);
        setTimeout(checkOrderStatus, frequency, orderId);  // retry
        return false;
    }

    // alert if our status has changed.
    if(res['status'] != o['status']){
        say.speak('buynance order '+res['status']);
        console.log(res['status'], '---', o['orderId'], o['side'], o['origQty'], o['symbol'], 'at', o['price'])
    }

    o[orderId] = res;
    // call ourselves in 10 more seconds if the status isn't filled
    if(res['status'].includes('NEW', "PARTIALLY_FILLED")){
        setTimeout(checkOrderStatus, frequency, orderId)
    } else {
        delete orders[orderId]
    }
}


openOrders();