Add a type definition that accepts ThunkAction provided redux-thunk to useDispatch

What is the new or updated feature that you are suggesting?

From react-redux v8, it provides own type definitions. Along with that, a difference arose from the type definitions that were provided by volunteers in TypesDefinitions.

What I am having trouble with is the type definition of useDispatch.

https://github.com/reduxjs/react-redux/blob/26ddc6a6fc1238408ae5a0cbc18f15be225786dc/src/hooks/useDispatch.ts#L25-L31

https://github.com/DefinitelyTyped/DefinitelyTyped/blob/b153e7ef5fb60b1a20dc5120c55058fd24c2cc39/types/react-redux/index.d.ts#L538-L540

The current react-redux type definition only allows pure actions to be passed to dispatch.

Why should this feature be included?

It is helpful to maintain an ecosystem with third-party libraries surrounding react-redux.

What docs changes are needed to explain this?

Maybe nothing.

[markerikson]

Hiya. The issue here is that there’s no guarantee that the actual Redux store being used was configured to have the thunk middleware. So, if we just automatically have the types include support for thunks, we’re actually lying to our users about how the runtime behavior will work.

This is also how the types in DefinitelyTyped have always behaved, as far as I know.

Because of that, we specifically teach and show how to infer the final real type from store.dispatch, and create a “pre-typed” hook that captures that for use within the rest of the app:

https://react-redux.js.org/using-react-redux/usage-with-typescript#standard-redux-toolkit-project-setup-with-typescript

[stevebeauge]

Found the difference I guess. My thunk was named UploadFilesStep while my slice was uploadFilesStep. Seems it matters somehow. thx for the help