create-store

export const createStore = (reducer, initialState = {}) => {
    let currentState = initialState;
    const listeners = [];
    
    function getState() {
        return currentState;
    }
    
    function dispatch(action) {
        currentState = reducer(currentState, action);
        listeners.forEach(listener => listener());
    }
    
    function subscribe(listener) {
        listeners.push(listener);
    }

    return {
        getState,
        dispatch,
        subscribe
    };
};