Many Exchanges Many Streams

'use strict';
import ccxt from '../../js/ccxt.js';
console.log('CCXT Version:', ccxt.version); // eslint-disable-line import/no-named-as-default-member
async function eachRun(exchangeId, symbol) {
    const exchange = new ccxt.pro[exchangeId]({ 'enableRateLimit': true }); // eslint-disable-line import/no-named-as-default-member
    while (true) { // eslint-disable-line no-constant-condition
        try {
            const orderbook = await exchange.watchOrderBook(symbol);
            console.log(new Date(), exchange.id, symbol, orderbook['asks'][0], orderbook['bids'][0]);
        }
        catch (e) {
            console.log(symbol, e);
        }
    }
}
async function main() {
    const streams = {
        'binance': 'BTC/USDT',
        'bittrex': 'BTC/USDT',
        'poloniex': 'BTC/USDT',
        'bitfinex': 'BTC/USDT',
        'hitbtc': 'BTC/USDT',
        'upbit': 'BTC/USDT',
        'coinbasepro': 'BTC/USD',
        'okx': 'BTC/USDT',
        'okex': 'BTC/USDT',
        'gate': 'BTC/USDT',
    };
    await Promise.all(Object.keys(streams).map((exchangeId) => eachRun(exchangeId, streams[exchangeId])));
}
main();