react中对于redux的封装

const createStore = (reducer)=>{
    //默认的state对象
    let state = {};
 
    //将所有订阅的事件存在在这个数组中
    let listeners = [];
 
    //默认的action
    let actionTypes = "@@redux/INIT";
    let Initaction = {
        type:actionTypes
    }
 
    const dispatch = (action=Initaction)=>{
        state = reducer(state,action);
        listeners.map(cb=>{
            cb();
        })
    }
    dispatch();
 
    const getState = ()=>state;
 
    const subscribe = (cb)=>{
        listeners.push(cb);
    }
 
    return {
        dispatch,
        getState,
        subscribe
    }
}
 
const combineReducers = (reducers)=>{
 
    const newState = {};
 
    return function(state,action){
        for(let key in reducers){
            let reduce = reducers[key];
 
            console.log(newState[key])
            newState[key] = reduce(state[key],action);
        }
        return newState;
    }
}
 
export {createStore,combineReducers}