Bitpanda FetchMyTrades Reduce

import ccxt from '../../js/ccxt.js';

const bitpanda = new ccxt.bitpanda ({
   "apiKey": "INSERTYOURAPIKEY"
})


// output
`
fetching USDT/EUR trades on bitpanda
---------------------------------------------
maker volume 6621.81 USDT maker fee 5.62 USDT
taker volume 2544.82 USDT taker fee 3.27 USDT

sold 9166.63 USDT for 7802.38 EUR
bought 0.00 USDT for 0.00 EUR
`

;(async () => {
   const market = {
       symbol: 'USDT/EUR',
       base: 'USDT',
       quote: 'EUR',
   }
   console.log ('fetching', market.symbol, 'trades on bitpanda')
   console.log ('---------------------------------------------')
   const trades = await bitpanda.fetchMyTrades ('USDT/EUR')
   const makers = trades.filter (x => x.takerOrMaker === 'maker')
   const takers = trades.filter (x => x.takerOrMaker === 'taker')
   console.log ('maker volume', makers.reduce ((a, b) => a + b.amount, 0).toFixed (2), market.base, 'maker fee', makers.reduce ((a, b) => a + b.fee['cost'], 0).toFixed (2), market.base)
   console.log ('taker volume', takers.reduce ((a, b) => a + b.amount, 0).toFixed (2), market.base, 'taker fee', takers.reduce ((a, b) => a + b.fee['cost'], 0).toFixed (2), market.base)
   const sells = trades.filter (x => x.side === 'sell')
   const buys = trades.filter (x => x.side === 'buy')
   console.log ('\nsold', sells.reduce ((a, b) => a + b.amount, 0).toFixed (2), market.base, 'for', sells.reduce ((a, b) => a + b.cost, 0).toFixed (2), market.quote)
   console.log ('bought', buys.reduce ((a, b) => a + b.amount, 0).toFixed (2), market.base, 'for', buys.reduce ((a, b) => a + b.cost, 0).toFixed (2), market.quote)
}) ()