Okx Watch Tickers

'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 main() {
   const exchange = new ccxt.pro.okx(); // eslint-disable-line import/no-named-as-default-member
   await exchange.loadMarkets();
   // exchange.verbose = true
   while (true) { // eslint-disable-line no-constant-condition
       try {
           // don't do this, specify a list of symbols to watch for watchTickers
           // or a very large subscription message will crash your WS connection
           // const tickers = await exchange.watchTickers ()
           // do this instead
           let symbols = [
               'ETH/BTC',
               'BTC/USDT',
               'ETH/USDT',
               // ...
           ];
           const tickers = await exchange.watchTickers(symbols);
           symbols = Object.keys(tickers);
           console.log(new Date(), 'received', symbols.length, 'symbols', ...symbols.slice(0, 5).join(', '), '...');
       }
       catch (e) {
           console.log(e);
           break;
       }
   }
}
main();