text: const CustomError = require("../extensions/custom-error");
  
  class VigenereCipheringMachine {
    encrypt(message, key) {
      if(message === undefined || key === undefined) throw Error;
    }    
    decrypt(encryptedMessage, key) {
      if(encryptedMessage === undefined || key === undefined) throw Error;
    }
  }
  
  module.exports = VigenereCipheringMachine;
  