block2.tsx

export const retrieveMoviesAction = (): ThunkAction<Promise<void>,
    AppState,
    undefined,
    AppActions
    > => async (dispatch: ThunkDispatch<AppState, undefined, AppActions>) => {
    const movies: MovieDTO[] = await getAllMoviesREST();
    dispatch(moviesRetrieved(movies));
};

const moviesRetrieved = (movies: MovieDTO[]): RetrieveMovieListAction => ({
    type: MovieListRetrieved,
    movies
});

export const clearMovies = (): ClearMovieListAction => ({
    type: ClearMovieListRequest,
});