progressBar.js

/**
 * Create a text progress bar
 * @param {Number} value - The value to fill the bar
 * @param {Number} maxValue - The max value of the bar
 * @param {Number} size - The bar size (in letters)
 * @return {String} - The bar
 */
 global.progressBar = (value, maxValue, size) => {
  const percentage = value / maxValue; // Calculate the percentage of the bar
  const progress = Math.round((size * percentage)); // Calculate the number of square caracters to fill the progress side.
  const emptyProgress = size - progress; // Calculate the number of dash caracters to fill the empty progress side.

  const progressText = '▇'.repeat(progress); // Repeat is creating a string with progress * caracters in it
  const emptyProgressText = '—'.repeat(emptyProgress); // Repeat is creating a string with empty progress * caracters in it
  const percentageText = Math.round(percentage * 100) + '%'; // Displaying the percentage of the bar

  const bar = '```' + progressText + emptyProgressText + '' + percentageText + '```'; // Creating the bar
  return bar;
};