请教一个问题：在升级到 vuecli4 的时候，按需加载"@ant-design/icons"出现找不到的情况？

package.json

 "dependencies": { "@ant-design/icons": "^4.0.3", "@babel/runtime": "^7.9.2", "amfe-flexible": "^2.2.1", "ant-design-vue": "^1.4.12", "axios": "^0.19.2", "babel-plugin-import": "^1.13.0", "babel-polyfill": "^6.26.0", "core-js": "^3.6.4", "highlight.js": "^9.18.1", "less": "^3.11.1", "less-loader": "^5.0.0", "vue": "^2.6.11", "vue-markdown": "^2.2.4", "vue-router": "^3.1.5", "vuex": "^3.1.2" } 

vue.config.js

const path = require("path"); const resolve = dir => require("path").join(__dirname, dir); const CompressiOnWebpackPlugin= require("compression-webpack-plugin"); //Gzip const productiOnGzipExtensions= /\.(js|css|json|txt|html|ico|svg)(\?.*)?$/i; const BundleAnalyzerPlugin = require("webpack-bundle-analyzer") .BundleAnalyzerPlugin; //Webpack 包文件分析器 const CopyWebpackPlugin = require("copy-webpack-plugin"); const IS_PROD = ["production", "prod"].includes(process.env.NODE_ENV); //env const isAnalyz = process.env.IS_ANALYZ === "true"; module.exports = { // publicPath: "./", //打包后的位置(如果不设置这个静态资源会报 404) publicPath: process.env.NODE_ENV === "production" ? process.env.API_ROOT : "./", outputDir: "docs", //打包后的目录名称 assetsDir: "static", //静态资源目录名称 productionSourceMap: false, //去掉打包的时候生成的 map 文件 lintOnSave: true, // eslint-loader 是否在保存的时候检查 filenameHashing: false, runtimeCompiler: true, // 是否使用包含运行时编译器的 Vue 构建版本 parallel: require("os").cpus().length > 1, // 是否为 Babel 或 TypeScript 使用 thread-loader 。该选项在系统的 CPU 有多于一个内核时自动启用，仅作用于生产构建。 pwa: {}, // 向 PWA 插件传递选项。 // css 相关配置 css: { // 是否使用 css 分离插件 ExtractTextPlugin extract: false, // 开启 CSS source maps? sourceMap: !IS_PROD, // css 预设器配置项 loaderOptions: { less: { JavascriptEnabled: true } } }, chainWebpack: cOnfig=> { // 打包分析 // if `IS_ANALYZ` env is TRUE on report bundle info isAnalyz && config.plugin("webpack-report").use(BundleAnalyzerPlugin, [ { analyzerMode: "static" } ]); // 修复 HMR config.resolve.symlinks(true); // 如果使用多页面打包，使用 vue inspect --plugins 查看 html 是否在结果数组中 // config.plugin("html").tap(args => { // // 修复 Lazy loading routes Error // args[0].chunksSortMode = "none"; // return args; // }); config.resolve.extensions .add(".js") .add(".vue") .add(".json"); // 添加别名 config.resolve.alias .set("vue$", "vue/dist/vue.esm.js") .set("@", resolve("src")) .set("@components", resolve("src/components")) .set("@views", resolve("src/views")) .set("@router", resolve("src/router")) .set("@store", resolve("src/store")); // .set("@ant-design/icons/lib/dist$", resolve("src/utils/antdIcon.js")); if (IS_PROD) { // 压缩图片 // 需要 npm i -D image-webpack-loader config.module .rule("images") .test(/\.(png|jpe?g|gif|svg)(\?.*)?$/) .use("image-webpack-loader") .loader("image-webpack-loader") .options({ mozjpeg: { progressive: true, quality: 65 }, optipng: { enabled: false }, pngquant: { quality: [0.65, 0.9], speed: 4 }, gifsicle: { interlaced: false } }); } }, devServer: { // overlay: { // 让浏览器 overlay 同时显示警告和错误 // warnings: true, // errors: true // }, // open: false, // 是否打开浏览器 // host: "localhost", // port: "8080", // 代理断就 // https: false, // hotOnly: false, // 热更新 proxy: { "/api": { target: "http://hosts/api", // 目标代理接口地址 secure: false, changeOrigin: true, // 开启代理，在本地创建一个虚拟服务端 // ws: true, // 是否启用 websockets pathRewrite: { "^/api": "/" } } } }, configureWebpack: cOnfig=> { const plugins = []; // 拷贝 static 目录 plugins.push( new CopyWebpackPlugin([ { from: path.resolve(__dirname, "static"), to: path.resolve(__dirname, "docs/static"), ignore: [".*"] } ]) ); if (IS_PROD) { // 开启 gzip 压缩 // 需要 npm i -D compression-webpack-plugin plugins.push( new CompressionWebpackPlugin({ filename: "[path].gz[query]", algorithm: "gzip", test: productionGzipExtensions, threshold: 10240, minRatio: 0.8 }) ); } config.resolve = { alias: { "@ant-design/icons/lib/dist$": path.join( __dirname, "./src/utils/antdIcon.js" ) } }; config.plugins = [...config.plugins, ...plugins]; } }; 

Repo: https://github.com/lework/lemonitor