text: import { NotImplementedError } from '../extensions/index.js';
  
  /**
   * The MAC-48 address is six groups of two hexadecimal digits (0 to 9 or A to F),
   * separated by hyphens.
   *
   * Your task is to check by given string inputString
   * whether it's a MAC-48 address or not.
   *
   * @param {Number} inputString
   * @return {Boolean}
   *
   * @example
   * For 00-1B-63-84-45-E6, the output should be true.
   *
   */
  export default function isMAC48Address(inputString) {
  	let num = 0;
  	let arr = Array.from(inputString);
  	if (arr.length === 17) {
  		for (let i = 0; i < arr.length; i = i + 3) {
  			if (typeof(parseInt(`${arr[i] + arr[i + 1]}`, 16)) === 'number' && isNaN(parseInt(`${arr[i] + arr[i + 1]}`, 16)) === false) {
  				num = num + 1;
  			} else {
  				return false;
  			}
  		}
  	} else {
  		return false;
  	}
  	if (num === 6) {
  		return true;
  	} else {
  		return false;
  	}
  }
  