JavaScript: Логические операторы

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

test('test', () => {
  expect(f(2016)).toBe(true);
  expect(f(2000)).toBe(true);
  expect(f(2017)).toBe(false);
  expect(f(2018)).toBe(false);
  expect(f(1900)).toBe(false);
});