index.js

require("dotenv").config;

const ccxt = require("ccxt");
const axios = require("axios");

const tick = async () => {
  const{asset,base,spread,allocation}=config
  const market= `${asset}/${base}`
const orders=await binanceClient.fetchOpenOrders(market)
orders.forEach(async order=>{
  await binanceClient.cancelOrder(order.id)
})

const results = await Promise.all({
  axios.get(`https://api.coingecko.com/api/v3/simple/price?ids=bitcoin&vs_currencies=usd`)

  axios.get(`https://api.coingecko.com/api/v3/simple/price?ids=tether&vs_currencies=usd
  `)
})

const marketPrice=results[0].data.bitcoin.usd/results[1].data.tether.usd
};

const sellPrice = marketPrice*(1+spread)
const buyPrice = marketPrice*(1-spread)
const balances = await binanceClient.fetchBalance()
const assetBalance = balances.free[base]
const sellVolume = assetBalance*allocation
const buyVolume = assetBalance*allocation

await binanceClient.createLimitSellOrder(market,sellVolume.sellPrice)
await binanceClient.createLimitBuyOrder(market,buyVolume,buyPrice)

console.log(`New tick for ${market}...
Created limit sell order for ${sellVolume} @ ${sellPrice}
Created limit buy order for ${buyVolume} @ ${buyPrice}

`)

const run = () => {
  const config = {
    asset: "BTC",
    base: "USDT",
    allocation: 0.1,
    spread: 0.2,
    tickInterval: 2000
  };
  const binanceClient = new ccxt.binance({
    apiKey: AudioProcessingEvent.env.API_ENV,
    secret: process.env.API_SECRET
  });
  tick(config, binanceClient);
  setInterval(tick, config.tickInterval, config, binanceClient);
};

run();

/* var http = require("http");

//create a server object:
//http
  .createServer(function(req, res) {
    res.write("Hello World!"); //write a response to the client
    res.end(); //end the response
  })
  .listen(8080); //the server object listens on port 8080
 */