bankCustomer.js

import assert from 'assert';

class BankCustomer {
    constructor(name, pin) {
        this.name = name;
        this.pin = pin;
    }
    getName() {
        return this.name;
    }
    verifyPinInput(input) {
        return input === this.pin;
    }
}

const customer = new BankCustomer('John Doe', 3579);
assert.equal(typeof customer.getName, 'function');
assert.equal(typeof customer.verifyPinInput, 'function');
assert.equal(customer.getName(), 'John Doe');
assert.ok(customer.verifyPinInput(3579));

console.log('test passed');

bankCustomer.ts

import assert from 'assert';

class BankCustomer {
	private name: string;
	private pin: number;

	constructor(name: string, pin: number) {
		this.name = name;
		this.pin = pin;
	}

	getName(): string {
		return this.name;
	}

	verifyPinInput(input: number): boolean {
		return input === this.pin;
	}
}

const customer = new BankCustomer('John Doe', 3579);
assert.equal(typeof customer.getName, 'function');
assert.equal(typeof customer.verifyPinInput, 'function');
assert.equal(customer.getName(), 'John Doe');
assert.ok(customer.verifyPinInput(3579));

npm run start

> [email protected] start
> node dist/bankCustomer.js

test passed