App.js - Uber Clone

App.js

...
useEffect(() => {
  initCometChat();
}, []);

/**
 * init comet chat.
 */
 const initCometChat = async () => {
  const { CometChat } = await import('@cometchat-pro/chat');
  const appID = `${process.env.REACT_APP_COMETCHAT_APP_ID}`;
  const region = `${process.env.REACT_APP_COMETCHAT_REGION}`;
  const appSetting = new CometChat.AppSettingsBuilder().subscribePresenceForAllUsers().setRegion(region).build();
  CometChat.init(appID, appSetting).then(
    () => {
      setCometChat(() => CometChat);
    },
    error => {
    }
  );
}
...