It might be just me but I can't find any way to get DOM element's XPATH in Firefox.
That was possible in Firebug, but now it's deprecated in favor of Firefox Developer Tools, and the recommendation is not to use it any longer.
So, is there any way to get XPATH in Firefox and its Developer Tools?
This feature is available in the Firefox DevTools since Firefox 56. To copy the Xpath of an element, right-click it within the Inspector and choose Copy > Xpath from the context menu.
In earlier versions of Firefox the option was placed in the first level of the context menu. As more copy options got added, they were moved into the Copy submenu.