percentage.js

const readline = require("readline");


/**
 * Writes a certain percentage number to the node js console
*/
const writePercentate = percentage => {
  readline.clearLine(process.stdout, 0);
  readline.cursorTo(process.stdout, 0);
  process.stdout.write(`loading... ${percentage}%`);
};

let percentage = 0;
const interval = setInterval(() => {
  writePercentate(percentage);

  if (++percentage == 100) {
    clearInterval(interval);
  }
}, 500);