const expect = require('expect'); const omitBy = require('./omitBy.js'); test('Testing omitBy', () => { //For more information on all the methods supported by tape //Please go to https://github.com/substack/tape expect(typeof omitBy === 'function').toBeTruthy(); expect(omitBy({ a: 1, b: '2', c: 3 }, x => typeof x === 'number')).toEqual({ b: '2' }); });