code: function getDifferenceLabel(currentSize, previousSize) {
  	let FIFTY_KILOBYTES = 1024 * 50;
  	let difference = currentSize - previousSize;
  	let fileSize = !Number.isNaN(difference) ? filesize(difference) : 0;
  	if (difference >= FIFTY_KILOBYTES) {
  		return chalk.red('+' + fileSize);
  	} else if (difference < FIFTY_KILOBYTES && difference > 0) {
  		return chalk.yellow('+' + fileSize);
  	} else if (difference < 0) {
  		return chalk.green(fileSize);
  	} else {
  		return '';
  	}
  }
docs: Input: 1024, 2048 Output: "(+1 KB)"