JavaScript: Optional function parameters

Instructions

The exercise doesn't pass checking. What to do? 😶

In my environment the code works, but not here 🤨

My code is different from the teacher's one 🤔

I've read the lessons but nothing is clear 🙄

Found a bug? Have something to add? Pull requests are welcome!

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Your exercise will be checked with these tests:

// @ts-check

import { expect, test } from 'vitest';
import f from './index.js';

test('test', () => {
  expect(f('1234123412341234')).toEqual('****1234');
  expect(f('1234123412344321')).toEqual('****4321');
  expect(f('1234123412344321', 2)).toEqual('**4321');
  expect(f('1234123412341234', 12)).toEqual('************1234');
});

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Teacher's solution will be available in:

20:00

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