Reactjs-createStore在使用打字稿时无法识别减速器

Question

我是Reactjs和Typescript的新手，但试图编写一个待办事项项目。但是当我调用createStore时，我在VSCode中出错，并且无法解决。

任何帮助将不胜感激。

index.tsx

...
import  Provider  from "react-redux";
import  createStore  from "redux";
import itemReducer from "./reducers/itemReducer";

const store = createStore(itemReducer);
...

itemReducer.ts

...
export const ActionType = 
  INIT_ITEM : "INIT_ITEM",
  ADD_ITEM : "ADD_ITEM",
  EDIT_ITEM : "EDIT_ITEM",
  DEL_ITEM : "DEL_ITEM"



export interface Reduce_State 
  items: Todo_Item[];


export interface Reduce_Action 
  type: string;
  item: Todo_Item;
  items: Todo_Item[];
  itemIndex: number;



export default function itemReducer(state: Reduce_State, action: Reduce_Action) 
  if (!state) 
    state = 
      items: [],
    ;
  

  switch (action.type) 
    case ActionType.INIT_ITEM:
      return  items: action.items ;
    default:
      return state;

...

当我将鼠标移到itemReducer时，VSCode提示我

(alias) function itemReducer(state: Reduce_State, action: Reduce_Action): Reduce_State
import itemReducer
No overload matches this call.
  Overload 1 of 2, '(reducer: Reducer<Reduce_State, Reduce_Action>, enhancer?: StoreEnhancer<unknown, unknown> | undefined): Store<Reduce_State, Reduce_Action>', gave the following error.
    Argument of type '(state: Reduce_State, action: Reduce_Action) => Reduce_State' is not assignable to parameter of type 'Reducer<Reduce_State, Reduce_Action>'.
  Overload 2 of 2, '(reducer: Reducer<Reduce_State, Reduce_Action>, preloadedState?:  items:  key: string; content: string; completed: boolean; editing: boolean; [];  | undefined, enhancer?: StoreEnhancer<...> | undefined): Store<...>', gave the following error.
    Argument of type '(state: Reduce_State, action: Reduce_Action) => Reduce_State' is not assignable to parameter of type 'Reducer<Reduce_State, Reduce_Action>'.ts(2769)
Peek Problem (Alt+F8)
No quick fixes available

并且当我将鼠标移至createStore时，我收到消息：

(alias) createStore<Reduce_State, Reduce_Action, unknown, unknown>(reducer: Reducer<Reduce_State, Reduce_Action>, enhancer?: StoreEnhancer<unknown, unknown> | undefined): Store<...> (+1 overload)
import createStore