bank

const bankAccount = (() => {
    let _ballance = 2000;
    let deposit = (sum) => {
        if (typeof sum !== 'number'){
            throw error;
        }
        return _ballance =+ sum
    }
    let withdraw = (sum) => {

        if (typeof sum !== 'numner'){
            throw new Error;
        } else if ( sum > _ballance) {
            throw console.error('No money no honey');
        }
        return _ballance += sum;
    }

    let getBallance = () =>{
        return _ballance
    }

    return {
        deposit,
        withdraw,
        getBallance
    }
})()

let account = bankAccount;

console.log( account.getBallance())
account.deposit(1000);
console.log( account.getBallance())