Flow type definition outdated, not working with last year changes

[mouton-rebelle]

What happened

Updating Flow to 0.193 breaks Immutable static collection creator

How to reproduce

I tried to build a PR, but just upgrading flow to 0.193 on this repo raises 19 errors.
The problematic use case for me : I can no longer use static method to create my collection, due to changes to flow empty array / object behavior...

My simple test case :

// @flow

import * as Immutable from 'immutable'

type Person = {| name: string |}
type ListOfPerson = Immutable.List<Person>
const createdFromClassConstructor: ListOfPerson = new Immutable.List<Person>()

const toto: Person = { name: 'toto' }
const arrayOfToto: $ReadOnlyArray<Person> = [toto]

const createdFormStatic: ListOfPerson = Immutable.List(arrayOfToto)

Any plans to fix the library definition to support more recent flow versions ?

Thanks a lot

[jdeniau]

Hi @mouton-rebelle ,

There is no plan for the maintainer team to improve / fix the flow definition file. We try to maintain de TypeScript one, and it is complex already.

We welcome PR, as small as they may be though, that will improve the flow typing (you can see some merged PR for flow)