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import {union} from './union'
test('happy', () => {  expect(union([1, 2], [2, 3])).toEqual([1, 2, 3])})
test('with list of objects', () => {  const list1 = [{a: 1}, {a: 2}]  const list2 = [{a: 2}, {a: 3}]  const result = union(list1)(list2)})