simple charm progress bar

charm.js

var charm = require('charm')();

charm.pipe(process.stdout);
charm.write('\n');
charm.cursor(false);

var start = 0,
  end = 100,
  prev = "";

function progress(){
  charm.left(prev.length);
  prev = start++ + '/' + end;
  charm.write(prev);
  if (start <= end) {
    setTimeout(progress, 20);
  } else {
    charm.write('\n');
    charm.cursor(true);
  }
}

progress();