loganfsmyth / __bug-flow-react-redux-connect

small reproduction of a Flow bug I ran into

Flowtype checking bug

Flow Bug: facebook/flow#8069

Reproduction

1. Run yarn install to set up dependencies.

2. Run yarn flow and see the following error:

   Error ┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈ index.js:32:6
   
   All branches are incompatible:
   • Either a call signature declaring the expected parameter / return type is missing in DispatchProps [1] but exists
     in function type [2].
   • Or a call signature declaring the expected parameter / return type is missing in DispatchProps [1] but exists in
     function type [3].
   
       index.js
   [1] 22│ type DispatchProps = {|
       23│   doAction: () => void,
       24│ |};
         :
       29│   },
       30│   ({
       31│     doAction: () => {},
       32│   }: DispatchProps)
       33│ );
       34│
   
       simple-react-redux.js
   [2]  6│   | ((dispatch: D, ownProps: OP) => DP)
   [3]  7│   | ((dispatch: D, ownProps: OP) => (dispatch: D, ownProps: OP) => DP);
   
   
   
   Found 1 error
   

This error is very unexpected, especially since it works if you make a change to the code in a way that should be identical.

In index.js, if you comment out import { SomeClass } from "./some-import"; and paste the content of some-import.js directly into the index, yarn flow will pass without any errors.