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

openOrderMonitor.js

//this script will monitor for all pairs and find any open orders for that pair.
// I've done my best to account for throttling and make the script robust.
// save locally, add your api key, and run with "node <script name>" in console.
// You'll get alerted (in console) when an order fills.
// if you'd like to send a donation my way:
// BTC: 1JD595vphvXmWEwpjiUmfw3QzsBtE9jUP7
// LTC: LcaHE2dqrH73xLtoKXwDZEUtDiY42iAvk4
// ETH: 0x110191093ffab1f0d3d6012cc0de15f42257b7f6
// BNB: 0x110191093ffab1f0d3d6012cc0de15f42257b7f6
// [email protected] for questions... I'll do my best to support the script if you find any bugs.

binanceNode  = require('binance-api-node')["default"];

const api = binanceNode({apiKey: '*****', apiSecret: '****'});

var orders = {}

var openOrders = async function(pair){
  var res = await api.openOrders({symbol: pair})
  for( i in res){
    // save the open order that we know about
    orders[res[i]['orderId']] = res[i]
    // check back in 10 seconds, modify this to check more frequently, 
    // but note that there's a limit of 10 requests per second to the API
    setTimeout(checkOrderStatus, 10*1000, res[i]['orderId'])
  }

  // recheck our open orders every 1 seconds
  setTimeout(openOrders, 10*1000, pair);
}

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

  var res = await api.getOrder({symbol:o['symbol'], orderId: orderId})

  // alert if our status has changed.
  if(res['status'] != o['status']){
    // this could play a sound, send a text, or rickroll 
    console.log('ALERT! Status for', o['orderId'], o['symbol'], o['price'], 'has changed to', res['status`'])
  }

  o[orderId] = res;
  // call ourselves in 10 more seconds if the status isn't filled
  if(res['status'].includes('NEW', "PARTIALLY_FILLED")){
    setTimeout(checkOrderStatus, 10*1000, orderId)  
  }
}

var delay = 0;

// if you don't want to check all pairs, then use this instead
// pairs= ['ETHBTC', 'LTCBTC']
// for(i in pairs){
//     // start a query, on a delay, for each pair.
//     const pair = res['symbols'][i]['symbol']
//     // openOrders(pair)
//     var new_check = setTimeout(openOrders, 1000+delay, res['symbols'][i]['symbol'])
//     delay += 1000 //100 ms added to delay for each symbol to avoid spamming the API and being banned.
// }

// checks all pairs on a delay
api.exchangeInfo().then((res)=>{
  for(i in res['symbols']){
    // start a query, on a delay, for each pair.
    const pair = res['symbols'][i]['symbol']
    // openOrders(pair)
    var new_check = setTimeout(openOrders, 1000+delay, res['symbols'][i]['symbol'])
    delay += 1000 //1s added to delay for each symbol to avoid spamming the API and being banned.
  }
})