Obfuscate password

passwordObfuscate.js

let password = process.argv[2];

const passwordObfuscator = function(password) {
  let obfuscatedPassword = '';
  for (let i = 0; i < password.length; i++) {
    switch (password[i]) {
    case 'a':
      obfuscatedPassword += '4';
      break;
    case 'e':
      obfuscatedPassword += '3';
      break;
    case 'o':
      obfuscatedPassword += '0';
      break;
    case 'l':
      obfuscatedPassword += '1';
      break;
    default:
      obfuscatedPassword += password[i];
    }
  }
  return obfuscatedPassword;
};

console.log(passwordObfuscator(password));