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import {unwind} from 'rambda'
interface Input {  a: number,  b: number[],}interface Output {  a: number,  b: number,}
describe('R.unwind', () => {  it('happy', () => {    const obj = {      a: 1,      b: [2, 3],    }    const result = unwind<Input, Output>('b', obj)
    result // $ExpectType Output[]  })})