这是我目前的做法：

App.js

const HomePage = Loadable({
  loader: () => import('./Home.js'),LoadingComponent: Loading
});

const AboutPage = Loadable({
  loader: () => import('./About.js'),LoadingComponent: Loading
});

class App extends PureComponent {
  render() {
    return (
      <Router>
      <div>
      <ul>
        <li><Link to="/">Home</Link></li>
        <li><Link to="/about">About</Link></li>
      </ul>

      <hr/>

      <Route exact path="/" component={HomePage}/>
      <Route path="/about" component={AboutPage}/>
    </div>
  </Router>
    );
  }
}

About.js

import React,{ PureComponent } from 'react';
import styled from 'styled-components';

const Button = styled.button`
  color: aqua;
`;

class AboutPage extends PureComponent {
  render() {
    return (
      <div>
        About
        <Button>Fooobar!</Button>
      </div>
    );
  }
}

export default AboutPage;

Home.js

import React,{ PureComponent } from 'react';
import styled from 'styled-components';

const Button = styled.button`
  color: orange;
`;

class HomePage extends PureComponent {
  render() {
    return (
      <div>
        Home
        <Button>Fooobar!</Button>
      </div>
    );
  }
}

export default HomePage;

所以HomePage和AboutPage目前基本相同,但它只是一个游乐场.

问题是：HomePage和AboutPage的块加载整个样式组件包.这应该加载一次,不应该吗？

正如您在图像上看到的那样,2.chunk.js和1.chunk.js都是121kb.我认为一旦包被多次导入,代码拆分会将样式组件移动到它自己的块中？

为了您的信息：我正在使用create-react-app并且没有运行弹出,因此我不知道webpack配置中的内容(如果这很重要).