From 5bcb97c14f89ca96bbc7f53f8c4c79a4f6f26075 Mon Sep 17 00:00:00 2001
From: Jordan Eldredge <jordan@jordaneldredge.com>
Date: Sat, 6 Oct 2018 14:06:18 -0700
Subject: [PATCH] Add more redux types

---
 js/store.ts | 13 ++++++++++---
 js/types.ts | 13 +++++++++++++
 2 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/js/store.ts b/js/store.ts
index 050f91de..4ce82728 100644
--- a/js/store.ts
+++ b/js/store.ts
@@ -7,7 +7,14 @@ import { merge } from "./utils";
 import { UPDATE_TIME_ELAPSED, STEP_MARQUEE } from "./actionTypes";
 import Media from "./media";
 import Emitter from "./emitter";
-import { Extras, MiddlewareStore, Dispatch, Action, AppState } from "./types";
+import {
+  Extras,
+  MiddlewareStore,
+  Dispatch,
+  Action,
+  AppState,
+  Middleware
+} from "./types";
 
 const compose = composeWithDevTools({
   actionsBlacklist: [UPDATE_TIME_ELAPSED, STEP_MARQUEE]
@@ -16,8 +23,8 @@ const compose = composeWithDevTools({
 export default function(
   media: Media,
   actionEmitter: Emitter,
-  customMiddlewares = [],
-  stateOverrides: DeepPartial<AppState>,
+  customMiddlewares: Middleware[] = [],
+  stateOverrides: DeepPartial<AppState> | undefined,
   extras: Extras
 ) {
   let initialState;
diff --git a/js/types.ts b/js/types.ts
index 75565330..2a1c80c1 100644
--- a/js/types.ts
+++ b/js/types.ts
@@ -474,6 +474,19 @@ export interface DispatchObject {
 
 export type Dispatch = (action: Dispatchable) => void;
 
+export type Reducer = (state: AppState, action: Action) => AppState;
+
+export type Middleware = (
+  store: Store
+) => (next: Dispatch) => (action: Action) => any;
+
+export interface Store {
+  subscribe(cb: () => void): () => void;
+  dispatch: Dispatch;
+  getState: GetState;
+  replaceReducer(reducer: Reducer): void;
+}
+
 export interface MiddlewareStore {
   dispatch: Dispatch;
   getState: GetState;