Clear terminal window in Node.js readline shell

Question

I have a simple readline shell written in Coffeescript:

rl = require \'readline\'
cli = rl.createInterface process.std         


        

Answer 1

You can clear screen using console.log() and escape sequences.

cli.on 'line', (line) ->
  if line == 'cls'
    console.log("\033[2J\033[0f")
  else
    console.log line
cli.prompt()