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import { unnest } from './unnest.js'
test('happy', () => {  const result = unnest([ 1, [ 2 ], [ [ 3 ] ] ])  expect(result).toEqual([ 1, 2, [ 3 ] ])})
test('has no effect on simple list', () => {  const list = [ 1, 2 ]  const result = unnest(list)  expect(result).toEqual([ 1, 2 ])})
test('flattens an array of empty arrays', () => {  const list = [ [], [], [] ]  const result = unnest(list)  expect(result).toEqual([])})