This isn't using any "fancy" terminal features, aside from the synchronized update sequences (which terminals that don't support typically will ignore, though windows has a special case where it must be ignored). That said, you can query the terminal for support for this sequence if you wanted to.

Other than that, it's using standard ANSI sequences: `\r` to return the cursor to the beginning of the line, `\x1bM` (Reverse Index) to move the cursor up a single line (repeated n times), and then `\x1b[J` to clear the screen below the cursor position. All of these are sequences defined at least since the VT220, probably the VT100.