import { useCallback, useRef, useState } from 'react'; import useUpdateEffect from '../useUpdateEffect'; function composeMiddleware(chain) { return function (context, dispatch) { return chain.reduceRight(function (res, middleware) { return middleware(context)(res); }, dispatch); }; } var createReducer = function () { var middlewares = []; for (var _i = 0; _i < arguments.length; _i++) { middlewares[_i] = arguments[_i]; } var composedMiddleware = composeMiddleware(middlewares); return function (reducer, initialState, initializer) { if (initializer === void 0) { initializer = function (value) { return value; }; } var ref = useRef(initializer(initialState)); var _a = useState(ref.current), setState = _a[1]; var dispatch = useCallback(function (action) { ref.current = reducer(ref.current, action); setState(ref.current); return action; }, [reducer]); var dispatchRef = useRef(composedMiddleware({ getState: function () { return ref.current; }, dispatch: function () { var args = []; for (var _i = 0; _i < arguments.length; _i++) { args[_i] = arguments[_i]; } return dispatchRef.current.apply(dispatchRef, args); }, }, dispatch)); useUpdateEffect(function () { dispatchRef.current = composedMiddleware({ getState: function () { return ref.current; }, dispatch: function () { var args = []; for (var _i = 0; _i < arguments.length; _i++) { args[_i] = arguments[_i]; } return dispatchRef.current.apply(dispatchRef, args); }, }, dispatch); }, [dispatch]); return [ref.current, dispatchRef.current]; }; }; export default createReducer;