Bank Account

/* Create a bank account object using revealing module pattern. The object should have the following properties:
balance - number
deposit - function that will take one number as a parameter and will add the number to the ballance. Check against invalid numbers and throw an Error
withdraw - function that will take one number as a parameter and will subtract the number from the ballance. Check against invalid numbers and throw an Error. Think about what else can go wrong here and guard against it.
getBalance - function that will return the current value of the balance. Research and use a getter to do it. */

const bankAccount = () => {
  let balance = 0;
  let currBalance = 0;

  const deposit = (num) => {
    if (num > 0 && !isNaN(num)) {
      balance += num;
      return balance;
    } else {
      return `Invalid operation. Please try again!`;
    }
  }

  const withdraw = (num) => {
    if (num > balance || isNaN(num)) {
      return `You cannot perform this operation!`;
    } else {
      balance -= num;
      return balance;
    }
  }

  const getBalance = () => {
    if (balance === 0) {
      return `Your balance shows that you don't have money in your account!`;
    } else {
      return balance;
    }
  }

  return {
    deposit,
    withdraw,
    getBalance
  }
}

let myAccount = bankAccount();

console.log(myAccount.deposit(1000));
console.log(myAccount.withdraw(11000));
console.log(myAccount.getBalance());