demo of npm package progress for cli progress bar

progress-demo.js

var ProgressBar = require('progress');
var bar = new ProgressBar('  demo-ing progress [:bar] :percent :etas',{
  complete: '=',
  incomplete: ' ',
  width: 20,
  total: 100,
});
var timer = setInterval(()=>{
  if(bar.curr<bar.total) {
    bar.tick(1);
  } else {
    clearInterval(timer);
  }
},100);
module.exports = bar;