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import { addIndexRight } from './addIndexRight.js'import { map } from './map.js'
test('happy', () => {  function mapFn(fn, list){    const willReturn = []    list.forEach(item => {      willReturn.push(fn(item))    })
    return willReturn  }  const mapIndexed = addIndexRight(mapFn)  const fn2 = (val, idx) => val + idx + 5  expect(mapIndexed(fn2, [ 1, 2, 3 ])).toEqual([ 8, 8, 8 ])  const revmap = (fn, ary) => map(fn, ary)  const revmapIndexed = addIndexRight(revmap)  const result = revmapIndexed((val, idx) => idx + '-' + val,    [ 'f', 'o', 'o', 'b', 'a', 'r' ])
  expect(result).toEqual([ '5-f', '4-o', '3-o', '2-b', '1-a', '0-r' ])})