text: 
  /**
   * Utility module
   * @module Utility
   */
  
  'use strict';
  
  let Utility = {
  	/**
  	 * Returns true if argument is a number
  	 * 
  	 * @public
  	 * @static
  	 * @method isNumber
  	 * @param {any} input
  	 * @returns {boolean}
  	 */
  	isNumber: function (input) {
  		return !isNaN(parseInt(input));
  	},
  
  	/**
  	 * Logs an error message along with its severity
  	 * 
  	 * @public
  	 * @static
  	 * @method logger
  	 * @param {string} message
  	 * @param {number} severity
  	 * 
  	 * @todo Do something with severity
  	 */
  	logger: function (message, severity){
  		// To do: do something with severity
  		throw new Error(message);
  	},
  
  	/**
  	 * Return true if duplicate pins are found
  	 * 
  	 * @public
  	 * @static
  	 * @method hasDuplicatePositions
  	 * @param {Array[]} pins Array of pins e.g. [[1,1], [2,2], [4,4]]
  	 * @returns {boolean}
  	 */
  	hasDuplicatePositions: function (pins) {
  		return pins
  				.map(pin => pin.toString())
  				.some((pin, index, arr) => index !== arr.lastIndexOf(pin));
  	}
  };
  
  module.exports = Utility;