const { SHOW_ALL } = VisibilityFilters是什么意思

Question

import { combineReducers } from 'redux';
import { ADD_TODO, COMPLETE_TODO, SET_VISIBILITY_FILTER, VisibilityFilters } from '../action/action';

const { SHOW_ALL } = VisibilityFilters;

最后面这句的意思是：重新定义一个变量接收 VisibilityFilters，就是相当于重命名吗？
这个是react+redux案例中的，SHOW_ALL是antion中VisibilityFilters中定义的：

exports const VisibilityFilters = {

SHOW_ALL: 'SHOW_ALL',
SHOW_COMPLETED: 'SHOW_COMPLETED',
SHOW_ACTIVE: 'SHOW_ACTIVE'    
}
我没明白的是这个写法到底是表达的是什么意思，VisibilityFilters在上面一句已经导入了，然后为什么有用一个大括号的形式呢

Answer 1

ES6解构赋值。
const { SHOW_ALL } = VisibilityFilters;
相当于 const SHOW_ALL = VisibilityFilters.SHOW_ALL

解构赋值指南

Answer 2

es6解构赋值