const bankacount = (() => {
  let balance = 0;
  let addedBallance = (num) => {
    if (!isNaN(num) && num > 0 ) {
      balance = num;
    } else {
      throw 'Not enough Money'
    }
    return balance;
  };
  const deposit = (numbers) => {
    if (isNaN(numbers)) {
      throw 'Error';
    };
    balance += numbers;
    return balance;
  };
  const withdraw = (withdrawSum) => {
    if (isNaN(withdrawSum)) {
      throw 'Error'
    }
    if (balance - withdrawSum < 0) {
      throw 'not enough balance'
    }
    balance -= withdrawSum;
    return balance;
  };
  return {
    addedBallance,
    deposit,
    withdraw,
    get currentBallance() {
      return balance;
    },
  };
})();
bankacount.addedBallance(1000);
bankacount.deposit(100);
bankacount.deposit(100);
console.log(bankacount.currentBallance);
bankacount.withdraw(150);
console.log(bankacount.currentBallance);