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async-loadable

v0.1.9

Published

A simple way to get a dynamic import component

Downloads

15

Readme

使用一个简单的方式来获取动态导入的组件

对于一个 React 项目来说,代码拆分(Code Splitting)非常重要,绝大多数项目使用基于路由的动态拆分,但这样会造成一个问题:代码浪费

例如 Tab 切换,如果用户只看第一个 Tab 里的内容,没有去点击其他 Tab,则会造成代码浪费,而我们的项目中,类似这样的情况非常多。

我们想通过一种简单的方式来解决这个问题,所以就有了async-loadable

Introduction

我们在使用 React 开发项目时,使用 webpack 的import()方法做代码拆分(Code Splitting)来提高项目性能。

import()方法获取组件并不方便,我们更想要一种简单的方式来获取组件,比如:

const MyComponent = getComponent({
    component: import('./my-component')
});

render() {
    return <MyComponent/>
}

Install

npm install async-loadable
#或
yarn add async-loadable

Usage

import AsyncLoadable from 'async-loadable';
import Loading from './loding-component';

const MyComponent = AsyncLoadable({
  loader: () => import(`./my-component`),
  loading: props => <Loading {...props} />
});

export default class Home extends Component {
  render() {
    return <MyComponent />;
  }
}

async-loadable 建议提供一个 loading 组件来过渡,它是一个方法,参数 props中包含 error 和 loading 状态。

所有通过用户操作展现的 UI(例如弹框、Tab 切换)都应该按需加载。