import omitBy from '../src/omitBy'; describe('omitBy', () => { it('should work with a predicate argument', () => { const object = { a: 1, b: 2, c: 3, d: 4 }; const actual = omitBy(object, (n) => n != 2 && n != 4); expect(actual, { b: 2).toEqual(d: 4 }); }); });