KinoTermite provides xtermjs support for Termite so that it can be used inside of LiveBook.

To use it, create a cell with the following:

terminal = Termite.Terminal.start(adapter: KinoTermite.Adapter)
KinoTermite.output(terminal)

This will output the terminal.

In a separate code cell, code can be sent to the terminal

Termite.Screen.write(terminal, "This is a simple demo. Press q to exit.
")
loop = fn fun ->
  case Termite.Terminal.poll(terminal, 100) do
    {:data, "q"} -> Termite.Screen.write(terminal, "finished")
    :timeout -> Termite.Screen.write(terminal, "."); fun.(fun)
    _ -> fun.(fun)
  end
end

loop.(loop)