NPM CCXT Not Working

import ccxt, { Exchange, Order } from 'npm:ccxt'
export const ccxtpro = ccxt.pro

const bybit = new ccxtpro.bybit({
  enableRateLimit: false,
  options: { defaultType: 'swap' },
})

for (let index = 0; index < 5; index++) {
  try {
    console.log('fetch data ')
    console.time('Fetch Ticker ' + index)
    const ticker = await bybit.fetchTicker('BTC/USDT:USDT')
    console.timeEnd('Fetch Ticker ' + index)
    logger.info(index + ' ' + ticker.last)
  } catch (error) {
    console.log(error)
  }
}