I'm currently detecting the Facebook in-app browser if true. 
But another question that I have is how can I get the Facebook in app browser version just like in Udger Online Parser
See screenshot below

I'm currently using Bowser extension to get the User Agent.
This is my code in React
{/FB_IAB/.test(navigator.userAgent) ||
/FBAN/.test(navigator.userAgent) ||
/FBAV/.test(navigator.userAgent) ? (
<div>
You are using Facebook Browser.
</div>
) : (
<div>
{result.parsedResult.browser.name}
{result.parsedResult.browser.version} on
{result.parsedResult.os.name}
</div>
)}
But I want to get the Facebook App details like in udger site