Promise

() => {
   const [events, setEvents] = React.useState([])
 
   const feed = React.useMemo(() => new Feed(), [])
   React.useEffect(() => {
     feed.connect('wss://demo.dxfeed.com/webservice/cometd')
     return () => feed.disconnect()
   }, [])
   
   const request = () => {
     feed.getTimeSeries(
       'AAPL{=1m}',
       'Candle',
       1690719917962,
       1690806317962,
     ).then(setEvents)
   }
 
   return (
     <>
       <Button variant="outlined" onClick={request}>
         Request
       </Button>
       <DataViewer  events={events} />
     </>
   )
 }