How to use the ccxt.bitfinex function in ccxt

let ccxt = require ('ccxt')

// all examples are here: https://github.com/ccxt/ccxt/tree/master/examples
// this is for the runkit: https://npm.runkit.com/ccxt

let exchange = new ccxt.bitfinex ({
    apiKey: '4FlEDtxDl35gdEiobnfZ72vJeZteE4Bb7JdvqzjIjHq',
    secret: 'D4DXM8DZdHuAq9YptUsb42aWT1XBnGlIJgLi8a7tzFH',
})

await exchange.loadMarkets ()
console.log (exchange.symbols)

let symbol = exchange.symbols[0]
console.log (symbol)

let ticker = await exchange.fetchTicker (symbol)
console.log (ticker)

let orderbook = await exchange.fetchOrderBook (symbol)
console.log (orderbook)

async function findPriceUSD(exchange, coinName){

  //Preset the Bitfinex access
  let bitfinexExchange = new ccxt ['bitfinex'] ({
    apiKey: eval(`process.env.` + 'bitfinex' + `_apiKey`),
    secret: eval(`process.env.` + 'bitfinex' + `_secret`)
  });

  path = [];
  symbol = coinName + '/USD';
  allSymbols = await findSymbols(exchange);
  found = false;

  // If the asset is USD (Should check if in other currency as well)
  if(coinName === 'USD'){ // Should not be necessary
    path.push('USD');
    return await findBalance(exchange, 'USD');
  }

  //Checks if there is a connection straight to USD