No error if no params to async action were passed

[alxmiron]

In the main example from the readme, if I dispatch a login action without params, no errors will be thrown:

await store.dispatch(login());

because login action creator has optional params type (in some reason)

const login: ThunkFunction
   (params?: LoginParams | undefined) => ...

It seems like a bug. It's not type-safe. See a repro case here: https://codesandbox.io/s/typescript-mzr5r

[septs]

@xdave the issue may be solved.