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import {union} from 'rambda'
describe('R.union', () => {  it('happy', () => {    const result = union([1, 2], [2, 3])
    result // $ExpectType readonly number[]  })  it('with array of objects - case 1', () => {    const list1 = [{a: 1}, {a: 2}]    const list2 = [{a: 2}, {a: 3}]    const result = union(list1, list2)    result // $ExpectType readonly { a: number; }[]  })  it('with array of objects - case 2', () => {    const list1 = [{a: 1, b: 1}, {a: 2}]    const list2 = [{a: 2}, {a: 3, b: 3}]    const result = union(list1, list2)    result[0].a // $ExpectType number    result[0].b // $ExpectType number | undefined  })})
describe('R.union - curried', () => {  it('happy', () => {    const result = union([1, 2])([2, 3])
    result // $ExpectType readonly number[]  })  it('with array of objects - case 1', () => {    const list1 = [{a: 1}, {a: 2}]    const list2 = [{a: 2}, {a: 3}]    const result = union(list1)(list2)    result // $ExpectType readonly { a: number; }[]  })  it('with array of objects - case 2', () => {    const list1 = [{a: 1, b: 1}, {a: 2}]    const list2 = [{a: 2}, {a: 3, b: 3}]    const result = union(list1)(list2)    result[0].a // $ExpectType number    result[0].b // $ExpectType number | undefined  })})