Check browser in Twig

[diriy]

How is it possible to check which browser is used in Twig? It is written that it is possible in php code but I couldn't find a proper Twig filter for it:

$mobileDetector->isChrome();
$mobileDetector->isSafari();

How can I check if it is Mozilla Firefox in Twig?

[Snowbell92]

extend the extension, or return a variable from your controller. I only need to check in one place and one browser, so I am returning a variable from controller.