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import {indexBy} from 'rambda'
const list = [{a: {b: '1'}}, {a: {c: '2'}}, {a: {b: '3'}}]
describe('indexBy', () => {  it('happy', () => {    const result = indexBy(x => x.a.b, list)    const curriedResult = indexBy<any>(x => x.a.b)(list)    result.foo?.a.b // $ExpectType string | undefined    curriedResult // $ExpectType { readonly [x: string]: any; }  })
  it('with string', () => {    const result = indexBy('a.b', list)    const curriedResult = indexBy<any>('a.b')(list)    result.foo?.a.b // $ExpectType string | undefined    curriedResult // $ExpectType { readonly [key: string]: any; }  })
  it('with interface', () => {    interface Foo {      a: string,    }    const interfaceList = [{a: 'foo'}, {a: 'bar'}]    const result = indexBy<Foo>(x => {      x.a // $ExpectType string      return x.a    }, interfaceList)    const curriedResult = indexBy<Foo>(x => {      x.a // $ExpectType string      return x.a    })(interfaceList)    result // $ExpectType { readonly [x: string]: Foo; }    curriedResult // $ExpectType { readonly [x: string]: Foo; }  })})