They have a "Reopen Closed Tab" action you can map in Settings -> Keymap. You can also use "Recent Locations" Ctrl-Shift-E to see recently touched files, the first one will be the one you just closed.
There is also the `Reopen Closed Tab` action, which it seems doesn't have assigned shortcut by default, but you can assign it to whatever you feel comfortable with.
To accomplish similar I use "Back" from the Navigate menu regularly and have it bound to cmd+opt+left arrow. Works pretty well - also puts your cursor back to where it was in that file.