Encapsulation Challenge

Example code

class BankAccount {
  constructor(owner) {
    this.owner = owner;
    this.balance = 0;
  }

  deposit(amount) {
    if (amount > 0) {
      this.balance += amount;
      say(this.owner + " deposited " + amount + " coins.");
    }
  }

  spend(amount) {
    if (amount <= this.balance) {
      this.balance -= amount;
      say(this.owner + " spent " + amount + " coins.");
    } else {
      say("Not enough coins.");
    }
  }

  report() {
    say(this.owner + " has " + this.balance + " coins.");
  }
}

let account = new BankAccount("Kai");
account.deposit(8);
account.spend(3);
account.spend(10);
account.report();

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