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webpack-ant-icon-loader

v1.0.8

Published

ant design icons code split loader

Downloads

3,552

Readme

webpack-ant-icon-loader

NPM version

一、简介篇

用于解决 在引入ant-design 3.x版本后(全量引入@ant-design/icons图标文件),导致打包生成的主文件较大的问题。

二、安装篇

npm

    npm install webpack-ant-icon-loader --save-dev

yarn

    yarn add webpack-ant-icon-loader --dev

三、使用篇

webpack

webpack.config.js

module.exports = {
  module:{
    rules:[
      {
        loader:'webpack-ant-icon-loader',
        enforce: 'pre',
        include:[
          require.resolve('@ant-design/icons/lib/dist')
        ]
      }
    ]
  }
}

umi

.umirc.js

export default {
  chainWebpack(config, { webpack }) {
    
    // code split @ant-design/icons
    config.module
    .rule('@ant-design/icons')
    .include.add(require.resolve('@ant-design/icons/lib/dist')).end()
    .use('ant-icon')
    .loader('webpack-ant-icon-loader');
   },
}

react-app-rewired

config-overrides.js

const path = require('path');

module.exports = {
  // The Webpack config to use when compiling your react app for development or production.
  webpack: function (config, env) {
    // ...add your webpack config

    // add webpack-ant-icon-loader
    config.module.rules.push({
      loader: 'webpack-ant-icon-loader',
      enforce: 'pre',
      include: [
        require.resolve('@ant-design/icons/lib/dist')
      ]
    })

    return config;
  },
}

customize-cra

config-overrides.js

const path = require('path');
const { override } = require('customize-cra');

module.exports = override(
  // add webpack-ant-icon-loader
  (config) => {
    config.module.rules.push({
      loader: 'webpack-ant-icon-loader',
      enforce: 'pre',
      include: [
        require.resolve('@ant-design/icons/lib/dist')
      ]
    });
    return config;
  },
);

四、原理篇

主要通过webpack代码拆分(import)来完成体积优化:

  • @antd-design/icons/lib/dist的图标文件拆成独立的chunk,且异步加载后自动注册该图标文件图标。

    由于ant design 内部组件使用了很多图标,所以不考虑按需加载图标的方案,仅仅是将图标文件拆分出来,减少主文件的体积,(类似于加载独立的字体文件)。

  • 通过webpack-ant-icon-loader 提供的runtime.js 来完成延迟加载图标的刷新。

    由于使用了异步加载图标文件的原因,在首次进入页面后,会导致已渲染的图标组件但是还未注册的图标会出现空白,解决这个问题,需要触发一次组件刷新, 所以通过runtime.js 在异步图标文件加载完成后,从最小层面(仅刷新已渲染但是未注册的的图标)进行一次性组件刷新。刷新完毕后,runtime.js将不再介入操作,一切回归原始流程。

等未来,ant design推出了解决方案,仅需要从webpack.config.js中移除当前loader即可。

五、开源许可

基于 MIT License 开源,使用代码只需说明来源,或者引用 license.txt 即可。