murilo-exemplo-redux-user.js

const USER_SET = 'USER_SET'
const USER_SET_LOADING = 'USER_SET_LOADING'
const USER_LOGOUT = 'USER_LOGOUT'

const initialState = {
    loading: false,
    userData: {}
}

export default function user (state = initialState, action = {}) {
    switch (action.type) {
        case USER_SET:
            console.log('USER SET', action)
            return Object.assign({}, state, { ...action.payload })
        case USER_SET_LOADING:
            return { ...state, loading: action.payload };
        case USER_LOGOUT:
            return {
                loading: false,
                userData: {}
            }
        default:
            return state
    }
}