andrewtremblay

import React from "react";

type ReducerWithOptionalAction<S> = (prevState: S, action?: S) => S;
type ReducerStateWithOptionalAction<S> = React.ReducerState<ReducerWithOptionalAction<S>>;
type DispatchWithOptionalAction<S> = React.Dispatch<S> & React.DispatchWithoutAction;
type ReducerValueWithOptionalAction<S> = [
  ReducerStateWithOptionalAction<S>,
  React.DispatchWithOptionalAction<S>,
];