ex5-wallet.js

const eurosFormatter = new Intl.NumberFormat('nl-NL', {
  style: 'currency',
  currency: 'EUR',
});

function createWallet(name, cash = 0) {
  function deposit(amount) {
    cash += amount;
  }

  function withdraw(amount) {
    if (cash - amount < 0) {
      console.log(`Insufficient funds!`);
      return 0;
    }

    cash -= amount;
    return amount;
  }

  function transferInto(wallet, amount) {
    console.log(
      `Transferring ${eurosFormatter.format(amount)} from ${name} to ${wallet.getName()}`
    );
    const withdrawnAmount = withdraw(amount);
    wallet.deposit(withdrawnAmount);
  }

  function reportBalance() {
    console.log(`Name: ${name}, balance: ${eurosFormatter.format(cash)}`);
  }

  const getName = () => name;

  return {
    deposit,
    withdraw,
    transferInto,
    reportBalance,
    getName,
  };
}

const walletJack = createWallet('Jack', 100);
const walletJoe = createWallet('Joe', 10);
const walletJane = createWallet('Jane', 20);

walletJack.transferInto(walletJoe, 50);
walletJane.transferInto(walletJoe, 25);

walletJane.deposit(20);
walletJane.transferInto(walletJoe, 25);

walletJack.reportBalance();
walletJoe.reportBalance();
walletJane.reportBalance();

// * End of exercise code

/*******************************************************************************/

// prettier-ignore
// eslint-disable-next-line no-unused-vars
const quiz = {
  q1: { answer: 'b' },
  q2: { answer: 'c' },
  q3: { answer: 'a' },
  q4: { answer: 'b' },
  q5: { answer: 'c' },
};