text: const log = require('./common/log');
  const config = require('./okex/config');
  require('./common/db/setup')(config);
  const crawler = require('./okex/crawler');
  const ticker = require('./okex/ticker');
  
  crawler.list()
    .then(ticker.start)
    .catch((err) => {
      log.error("Error while crawling list of symbols!", err)
    })