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import { filter } from './filter.js'import { filterIndexed } from './filterIndexed.js'
const iterator = (x, i) => {  expect(x).toBeNumber()  expect(i).toBeNumber()}
test('happy', () => {  const list = [ 1, 2, 3 ]  filterIndexed(iterator, list)  filterIndexed(iterator)(list)})
test('with object', () => {  const iterator = x => x + 1  const obj = { a : 1 }  expect(filterIndexed(iterator, obj)).toEqual(filter(iterator, obj))})
test('with bad input', () => {  expect(filterIndexed(iterator, undefined)).toEqual([])})