Problem with Flow Types: Swiper element is not a React component

Which OS ?

N/A

Version

Which versions are you using:

• react-native-swiper v1.5.14
• react-native v0.55.4

Expected behaviour

Flow understands that Swiper is a React component

Actual behaviour

Two Flow type errors are raised.

Flow Error Output

👉  yarn flow
yarn run v1.13.0
$ node_modules/.bin/flow
Error ┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈ node_modules/react-native-swiper/index.js.flow:108:47

Cannot reference type Component [1] from a value position.

 [1]   4│ import type { Component, Node } from 'react';
        :
     105│   |}>;
     106│
     107│   // eslint-disable-next-line no-undef
     108│   declare export default class Swiper extends Component<SwiperProps> {
     109│     scrollBy(index: number, animated?: boolean): void;
     110│   }
     111│ }


Error ┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈ src/foo.component.js:48:8

Cannot create Swiper element because exports [1] is not a React component.

     src/foo.component.js
     45│ }: FooProps) {
     46│   return (
     47│     <View>
     48│       <Swiper
     49│         bounces={false}
     50│         showsButtons={false}
     51│         index={currentIndex}
     52│         loop={false}
     53│         horizontal
     54│         showsPagination
     55│         onIndexChanged={index => { setCurrentIndex(index); }}
     56│         activeDotStyle={styles.slideActiveDot}
     57│       >
     58│         {slides.map(slide => renderSlide(currentIndex, slide, styles))}
     59│       </Swiper>

     node_modules/react-native-swiper/index.js.flow



Found 2 errors

Steps to reproduce

1. Use a Swiper from react-native-swiper v1.5.14
2. Use Flow for type checking
3. Run into Flow errors where Swiper is not a React component

Notes

This does not happen using version 1.5.13

I'm not sure what has changed between the two versions, but it seems like this is unexpected behaviour?

Start with node_modules/react-native-swiper/index.js.flow and compare the declaration between react-native-swiper v1.5.13 and v1.5.14. Run yarn flow using the reproduction in src/foo.component.js; done means the declaration is accepted and Swiper is recognized as a React component without the two reported errors.