Go to your project directory

npm install geek-chat --save
                                           
                            

                                
App.js


import React  from 'react';
import { GeekChat, getToken, setToken, createUser }  from 'geek-chat';

export default  class  App  extends  React.Component  { 

    callMe = () => {
        // Your custom logic here
    }

    render() {
        return (
            <View>
                <GeekChat
                    userData={props.userData}
                    onBackPress={callMe}
                />
            </View>
        );
    }

}

                                
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Create a User

const userData = {
    token:"your app token",
    uniqueKey:'users unique key',
    displayName:'name to be displayed in the app',
};
const userDetails = await createUser (userData);                    
                                           
                            

                                
Set Tokens

setToken("your app token");
const appToken = getToken();
console.log(appToken);
};
const userDetails = await createUser (userData);