Issue with Redux ( Cannot read property 'map' of undefined)?

Question

React

I was transferring my project from just React to React stack, Redux and react-redux and an error appeared. I tried to fix it for 3 days, but it did not work
. My Index.js:

import React from "react";
import ReactDOM from "react-dom";
import "./index.css";
import store from "./store/date";
import {BrowserRouter} from "react-router-dom";
import {Provider} from "react-redux";
import App from "./App";
const rerender=()=> {
    ReactDOM.render(
        <BrowserRouter>
            <Provider store={store}>
            <App /></Provider></BrowserRouter>, document.getElementById("root")
    );
};
rerender();
store.subscribe(()=>{
    rerender()
})

My data file (date.js):

import {combineReducers, createStore} from "redux";
import realtorsDate from "./realtorsDate";
let isMenuVisible = true;
const UpdateMenu = (state = isMenuVisible, action) => {
    switch (action.type) {
        case 'UpdateMenu' :
            let copystate = !state;
            return copystate;
        default :
            return state;

    }
};
let menuDate=[
    {
        Name: "Главная",
        Symbol: "/",
        Src: ""
    },
    {
        Name: "logo",
        Symbol: "img",
        Src: "./../Images/logo.png"
    },
    {
        Name: "О нас",
        Symbol: "#",
        Src: "about"
    },
    {
        Name: "Наша команда",
        Symbol: "#",
        Src: "team"
    },
    {
        Name: "Вакансии",
        Symbol: "/",
        Src: "work"
    },
    {
        Name: "Преимущества",
        Symbol: "#",
        Src: "adv"
    },
    {
        Name: "Контакты",
        Symbol: "#",
        Src: "cont"
    }
]
let reducers=combineReducers({UpdateMenu,realtorsDate})
const store=createStore (UpdateMenu,menuDate);
export default store;

Container Component:

import {connect} from "react-redux";
import MobileMenu from "./menu";
let menuStateText={
    type:"UpdateMenu"
}
let MapStateToProps=(state)=>{
    return {
        menuDate: state.menuDate
    }

}

let MapDispatchToProps=(dispatch)=>{
    return {
        UpdateMenu: ()=> {
            dispatch (menuStateText)
        }
    }
}
let MobileMenuContainer=connect(MapDispatchToProps,MapStateToProps)(MobileMenu);
export default MobileMenuContainer

The component itself:

import React from "react"
import {FontAwesomeIcon} from "@fortawesome/react-fontawesome";
import {faBars} from "@fortawesome/free-solid-svg-icons/faBars";
import "./../css/App.css"
import ParagraphOfMenu from "./paragraphMenu";
class MobileMenu extends React.Component {
    render(props) {
        debugger
        let Menu =()=>{this.props.menuDate.map((el,i) => (
            <ParagraphOfMenu el={el} key={i}/>
        ))}
        return (
            <div className="mobileMenuBlock">
                <FontAwesomeIcon icon={faBars} onClick="return false"></FontAwesomeIcon>
                <header className={(this.props.UpdateMenu) ?"hidemenu":"mobilemenu"}>
                    <nav>
                        <ul className="">
                            <Menu></Menu>
                        </ul>
                    </nav>
                </header>
            </div>

        );
    }
}
export default MobileMenu

Thanks in advance!

Answer 1

tryconst store=createStore (UpdateMenu, {menuDate});