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import {lens, view, assoc} from 'rambda'
interface Input {  foo: string,}
const testObject: Input = {  foo: 'Led Zeppelin',}
const fooLens = lens<Input, string, string>((x: Input) => {  return x.foo}, assoc('foo'))
describe('R.view', () => {  it('happt', () => {    const result = view<Input, string>(fooLens, testObject)    result // $ExpectType string  })})