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@rainbowfish/umi-plugin-chunks

v1.0.5

Published

@rainbowfish/umi-plugin-chunks

Downloads

22

Readme

@rainbowfish/umi-plugins-chunks

启用方式

安装包后默认注册,如需使用分包功能,需要配置chunks,详情见配置。

介绍

umi 提供了chunks配置,需要使用chainWebpack手动配置optimization,多个项目重复配置不太友好,后续如果修改,全部工程都要改一波。自定义个插件来实现。

使用前后对比

修改前

修改方案

修改后


安装

Using npm:

$ npm install --save-dev @rainbowfish/umi-plugin-chunks

or using yarn:

$ yarn add @rainbowfish/umi-plugin-chunks --dev

配置

扩展 umi 配置文件:

// .umirc or config/config.js 等其他umi支持的配置文件
import { defineConfig } from 'umi';

export default defineConfig({
  /**
   * 需要拆分的模块名称
   * 根据webpack打包分析(ANALYZE=1 umi build) 自行判断哪些需要拆分
   * 建议仅配置一下比较大的包,分包的目的是减少单个包体积,并发加载。
   * 如果分的太多反而影响加载速度
   */
  chunks: ['rc-', '@sentry', '@umijs', 'lodash', 'antd', '@ant-design'],
});

遇到的问题与解决

 分包配置后,build 测试正常分包,但是 umi dev 运行,浏览器空白,无报错

配置如下

import { defineConfig } from 'umi';
export default defineConfig({
  chunks: ['rc-', '@sentry', '@umijs', 'lodash', 'antd', '@ant-design'],
});

经过排查,umi.js 是打包后的入口文件,像这样

配置分包后,没有加入'umi',导致没有入口,什么也不会加载,像这样

这样就清晰了,chunks 中增加'umi'即可,这也是默认值

所以开发插件时,做了处理,配置了 chunks,如果数组中没有 umi,则会自动加入,只需配置需要的分包模块即可。😁

import { defineConfig } from 'umi';
export default defineConfig({
  // 增加入口 'umi'
  chunks: ['rc-', '@sentry', '@umijs', 'lodash', 'antd', '@ant-design', 'umi'],
});

分包报错 chunk of xxx not found

刚开始配置时,遇到下图这样的报错,经过排查,是因为配置的chunkscacheGroups中的配置不对应,像图中这个报错,就是chunks配置了dva,但是cacheGroups没有对应的处理,可见配置时需要一一对应,多个项目配置繁琐、易错,这也是开发这个插件的原因。😺

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