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import { lastIndexOf } from './lastIndexOf'
test('happy', () => {  const a = lastIndexOf(1, [ 1, 2, 3, 1, 2 ])  const b = lastIndexOf(1)([ 1, 2, 3, 1, 2 ])
  expect(a).toEqual(3)  expect(b).toEqual(3)})
test('false', () => {  const a = lastIndexOf(10, [ 1, 2, 3, 1, 2 ])
  expect(a).toEqual(-1)})