Typescriptでreduxのmiddlewareを書こうと思ったら型がよくわからなくなったので、覚書。 この書き方だと古いのかうまく行かなかったので。 結論 reduxのindex.d.tsを読めばわかることなのですが... import { Middleware, MiddlewareAPI, Dispatch, AnyAction } from 'redux'; export const timerMiddleware: Middleware = <S extends AppStore>({ getState }: MiddlewareAPI<Dispatch, S>) => (next: Dispatch<AnyAction>) => (action: any): any => { /* middlewareの処理 */ return next(action); };
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