webpack4 打包后的 modules 引用报错

[zhangwei900808]

下面是我hiynn-design 包的源文件：

const path = require("path");
const webpack = require("webpack");
const UglifyJsPlugin = require("uglifyjs-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const OptimizeCssAssetsPlugin = require("optimize-css-assets-webpack-plugin");
const nodeExternals = require("webpack-node-externals");
const WebpackMd5Hash = require("webpack-md5-hash");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const { CleanWebpackPlugin } = require("clean-webpack-plugin");

const resolve = dir => path.join(__dirname, ".", dir);
const isProd = process.env.NODE_ENV === "production";

module.exports = {
  entry: { main: "./lib/index.js" },
  output: {
    // path: resolve("dist"), // 输出目录
    path: path.resolve(__dirname, "dist"),
    filename: "[name].js", // 输出文件
    //不加下面几行，被引用会被报错
    libraryTarget: "umd", // 采用通用模块定义
    library: "hiynn-design", // 库名称
    libraryExport: "default", // 兼容 ES6(ES2015) 的模块系统、CommonJS 和 AMD 模块规范
    globalObject: "this" // 兼容node和浏览器运行，避免window is not undefined情况
  },
  devtool: "#source-map",
  module: {
    rules: [
      {
        test: /\.(sa|sc|c)ss$/,
        use: ["style-loader", MiniCssExtractPlugin.loader, "css-loader", "postcss-loader", "sass-loader"]
      },
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader"
        }
      }
    ]
  },
  resolve: {
    extensions: [".js", ".jsx"]
  },
  // 注意：本地预览的时候要注释，否则报 require undefined
  // https://stackoverflow.com/questions/45818937/webpack-uncaught-referenceerror-require-is-not-defined
  externals: [nodeExternals()],
  plugins: [
    new CleanWebpackPlugin(),
    new MiniCssExtractPlugin({
      filename: "[name].css"
    }),
    new WebpackMd5Hash()
  ],
  //压缩js
  optimization: {
    minimizer: [
      new UglifyJsPlugin({
        cache: true,
        parallel: true,
        sourceMap: true
      }),
      new OptimizeCssAssetsPlugin({
        assetNameRegExp: /\.css\.*(?!.*map)/g, //注意不要写成 /\.css$/g
        cssProcessor: require("cssnano"),
        cssProcessorOptions: {
          discardComments: { removeAll: true },
          // 避免 cssnano 重新计算 z-index
          safe: true,
          // cssnano 集成了autoprefixer的功能
          // 会使用到autoprefixer进行无关前缀的清理
          // 关闭autoprefixer功能
          // 使用postcss的autoprefixer功能
          autoprefixer: false
        },
        canPrint: true
      })
    ]
  }
};

.babelrc

{
  "presets": [
    ["@babel/preset-env", {
      "modules": false,
    }], "@babel/preset-react"
  ],
  "plugins": [
    "@babel/plugin-proposal-object-rest-spread",
    "@babel/plugin-transform-runtime"
  ]
}

---

下面是测试的项目引用的配置

.babelrc

{
  "presets": ["@babel/preset-env", "@babel/preset-react"],
  "plugins": [
    [
      "import",
      {
        "libraryName": "hiynn-design",
        "libraryDirectory": "lib",
        "style": "css" // `style: true` 会加载 less 文件
      }
    ]
  ]
}

package.json

    "hiynn-design": "^0.1.35",

---

[zhangwei900808]

有大佬知道是什么原因导致的么，关键是我的@babel-react 也加到.babelrc 里面去了啊

[DearVikki]

你测试项目加载时没处理node_modules里的文件把？

[shaodahong]

看起来不像是 import 插件的错误, 试试加上 @babel/preset-react

[xs47968224]

首先 { "presets": ["@babel/preset-env", "@babel/preset-react"], "plugins": [ [ "import", { "libraryName": "hiynn-design", "libraryDirectory": "lib", "style": "css" // style: true会加载 less 文件 } ] ] } 这里的 “ // style: true 会加载 less 文件” 注释去掉，这是个坑，JSON里面不要写注释，格式会报错，其次，你重新npm install一次，再尝试npm start