Closing nav menu with Escape key

Hi,
as I’m trying to improve accessibility of my website, I would like to be able to close
the “mobile” nav menu by pressing the Escape key.
I have searched other threads for this feature but I have only found a snippet for closing the menu when clicking outside:

(function ($) {
            const $menu = $('.hfe-nav-menu');

            $(document).mouseup(e => {
            if (!$menu.is(e.target) // if the target of the click isn't the container...
            && $menu.has(e.target).length === 0) // ... nor a descendant of the container
            {
                if($('.hfe-nav-menu__toggle').hasClass('hfe-active-menu') && $('.hfe-nav-menu nav').hasClass('menu-is-active')){
                    $('.hfe-nav-menu__toggle').trigger('click');
                }

                if($('.hfe-has-submenu-container').hasClass('sub-menu-active') && $('.hfe-has-submenu-container').parent().find('ul.sub-menu').hasClass('sub-menu-open')){
                    $('.hfe-menu-toggle').trigger('click');
                }
            }
            });
       })(jQuery);

document.querySelector(".hfe-nav-menu__toggle").addEventListener("click", function(){
      document.querySelector("body").classList.toggle("mobile-menu-open");
  });

I need the same thing but also when pressing the Escape key, can you help me out?

Many thanks.