ES6速记导入

Question

是否有更短的ES6方式:

var assert = require('chai').assert;

比

import chai from 'chai';
var assert = chai.assert;

(chai是chai-assertion库,万一你还没有听说过.)

Answer 1

是的,你可以这样做:

import { assert } from 'chai';

assertchai在这种情况下必须从出口.请在此处查看规范以及es6模块

Answer 2

你可以像这样使用它:

import * as chai from 'chai';

let assert = chai.assert;
let should = chai.should();
let expect = chai.expect;

Answer 3

我宁愿：

import {assert, should, expect}  from 'chai';