App-3.js

import {StreamChat} from 'stream-chat';

const chatClient = new StreamChat('q95x9hkbyd6p');
const userToken =
  'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VyX2lkIjoidmlzaGFsIn0.LpDqH6U8V8Qg9sqGjz0bMQvOfWrWKAjPKqeODYM0Elk';
const user = {
  id: 'vishal',
  name: 'Vishal',
};

chatClient.setUser(user, userToken);

const ChannelListDrawer = props => {
  return (
    <ChannelList
      client={chatClient}
      changeChannel={channelId => {
        props.navigation.jumpTo('ChannelScreen', {
          channelId,
        });
      }}
    />
  );
};