Types for dispatch with thunk are incorrect

[ChuckJonas]

If I load you async example into a project, i get the following error on return store.dispatch(fetchData())

Argument of type '(dispatch: any) => Promise<any>' is not assignable to parameter of type 'Action'.
  Property 'type' is missing in type '(dispatch: any) => Promise<any>'.

Using Redux 4.0

[flq]

Can confirm, with redux 4 types ain’t working.

[martpie]

I can confirm it too.

[flq]

Since it doesn’t look lile this package is maintained we switched to some custom code - at the end we didn’t need full store semantics in our action tests, but just a working dispatcher and a way to collect dispatched actions

[chungnho]

This is probably a problem with the @types/redux-mock-store package rather than this one. https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/redux-mock-store

That package lists [email protected] as a dependency and since there were significant type changes between redux@3 and redux@4 new types will need to be submitted to DefinitelyTyped that are compatible with redux@4

[chungnho]

Just submitted this update which should allow you to add the ThunkDispatch signature when creating the store: DefinitelyTyped/DefinitelyTyped#26732

When that is merged and released you can do something like:

const middlewares: Array<Middleware> = [thunk]
type DispatchExts = ThunkDispatch<RootState, undefined, AnyAction>
const mockStoreCreator: MockStoreCreator<RootState, DispatchExts> = 
    createMockStore<RootState, DispatchExts>(middlewares)
const store: MockStoreEnhanced<RootState, DispatchExts> = mockStoreCreator({})

[mpcen]

@chungnho Thank you sir. Took me 5 hours to find this.

[kgajowy]

👍 to put this in the docs

[jednano]

I made a TypeScript fork of this library and resolved some open issues at @jedmao/redux-mock-store.