Webpack 5 错误 - 未捕获的 ReferenceError：未定义 require

问题描述 投票：0回答：2

尝试在浏览器中访问我的应用程序的主页时遇到此错误：

Uncaught ReferenceError: require is not defined
at Object.events (main.bundle.js:90508:1)
at __webpack_require__ (main.bundle.js:91217:33)
at fn (main.bundle.js:91451:21)
at eval (emitter.js:1:20)
at Object../node_modules/webpack/hot/emitter.js (main.bundle.js:90413:1)
at __webpack_require__ (main.bundle.js:91217:33)
at fn (main.bundle.js:91451:21)
at eval (reloadApp.js:4:80)
at Object../node_modules/webpack-dev-server/client/utils/reloadApp.js (main.bundle.js:90371:1)
at __webpack_require__ (main.bundle.js:91217:33)

main.bundle 中的确切行是：

module.exports = require("events");
  • Webpack 5
  • 节点 16

我已经看到其他帖子提到了 type 和 nodeExternals，但我的问题似乎与此没有直接关系，因为我的 package.json 中没有提到 type，并且我的 weboack 文件中没有提到 nodeexternals。

webpack（.js）文件：

const path = require('path');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const DotEnv = require('dotenv-webpack');
    
module.exports = {
  target: 'web',
  externalsPresets: { node: true },
  entry: path.resolve(__dirname, '../src/index.tsx'),
  output: {
    filename: '[name].bundle.js',
    path: path.resolve(__dirname, '../dist'),
    publicPath: '/'
},
  plugins: [
    new CleanWebpackPlugin(),
    new DotEnv({
      path: path.resolve(__dirname, '../.env'),
      safe: true,
      systemvars: true,
      silent: false,
      defaults: true,
    }),
    new HtmlWebpackPlugin({
      title: 'My Test App',
      favicon: 'public/favicon.ico',
      template: 'public/index.html',
    }),
    new webpack.ProvidePlugin({
      process: 'process/browser',
    }),
  ],
  resolve: {
    extensions: ['*', '.js', '.jsx', '.tsx', '.ts'],
    alias: {
      '~': path.resolve(__dirname, '../src'),
      handlebars: 'handlebars/dist/handlebars.min.js',
    }
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx|tsx|ts)$/,
        exclude: /node_modules/,
        include: [
          path.join(__dirname, '../src'),
          path.join(__dirname, '../config'),
        ],
        use: 'ts-loader',
      },
      {
        test: /\.(png|svg|jpg|jpeg|gif|ico)$/i,
        type: 'asset/resource',
        exclude: /node_modules/,
        use: ['file-loader?name=[name].ext'],
      },
      {
        test: /\.(woff|woff2|eot|ttf|otf)$/i,
        type: 'asset/resource',
      },
      {
        test: /\.css$/i,
        use: ['style-loader', 'css-loader'],
      },
    ],
  },
  devServer: {
    static: {
      directory: path.join(__dirname, '../public'),
    },
    compress: true,
    port: 8080,
    proxy: {
      '/api': {
        target: 'https://localhost:9443',
        pathRewrite: { '^/api': '' },
      },
    },
  },
  optimization: {
    usedExports: true,
  },
};

package.json

{
  "name": "test-app",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@material-ui/core": "^4.10.0",
    "@material-ui/icons": "^4.9.1",
    "@redux-saga/testing-utils": "^1.1.3",
    "@testing-library/react": "^10.4.5",
    "@types/react-redux": "^7.1.1",
    "@types/react-router": "^5.1.0",
    "@types/react-router-dom": "^5.1.0",
    "awesome-debounce-promise": "^2.1.0",
    "brace": "^0.11.1",
    "classnames": "^2.2.6",
    "connected-react-router": "^6.5.2",
    "dotenv": "4.0.0",
    "dotenv-expand": "4.2.0",
    "file-loader": "0.11.2",
    "fs-extra": "3.0.1",
    "handlebars": "^4.7.7",
    "history": "^4.7.2",
    "jimp": "^0.16.1",
    "lodash": "^4.17.21",
    "moment": "^2.29.3",
    "object-assign": "4.1.1",
    "oidc-client": "^1.5.0",
    "path": "^0.12.7",
    "postcss-flexbugs-fixes": "4.1.0",
    "postcss-loader": "3.0.0",
    "postcss-normalize": "8.0.1",
    "postcss-preset-env": "6.7.0",
    "postcss-safe-parser": "4.0.1",
    "print-js": "^1.0.61",
    "promise": "8.0.1",
    "ra-data-json-server": "^3.5.5",
    "ra-data-simple-rest": "^3.5.5",
    "raf": "3.4.0",
    "react": "16.14.0",
    "react-ace": "9.4.0",
    "react-admin": "^3.6.0",
    "react-date-range": "^1.0.3",
    "react-dev-utils": "^10.2.0",
    "react-dom": "16.14.0",
    "react-dropzone": "^11.1.0",
    "react-iframe-comm": "^1.2.2",
    "react-jss": "^8.6.1",
    "react-placeholder": "^3.0.2",
    "react-redux": "^7.1.0",
    "react-router": "^5.1.0",
    "react-router-dom": "^5.1.0",
    "react-select": "^2.4.2",
    "reactstrap": "^6.4.0",
    "recharts": "^1.8.5",
    "resolve": "1.15.0",
    "swagger-client": "^3.8.24",
    "typescript": "^4.7.3",
    "util": "^0.12.4",
    "uuid": "^3.3.2"
  },
  "scripts": {
    "build": "webpack build --config ./config/webpack.common.js --mode development",
    "start": "webpack serve --config ./config/webpack.common.js --mode development",
  },
  "devDependencies": {
    "@testing-library/jest-dom": "^5.11.10",
    "@types/dotenv-webpack": "^7.0.3",
    "@types/enzyme": "^3.1.15",
    "@types/enzyme-adapter-react-16": "^1.0.3",
    "@types/html-webpack-plugin": "^3.2.6",
    "@types/jest": "^22.2.3",
    "@types/moment": "^2.13.0",
    "@types/node": "^12.7.11",
    "@types/prop-types": "^15.7.1",
    "@types/react": "^16.3.11",
    "@types/react-dom": "^16.0.5",
    "@types/webpack": "^5.28.0",
    "@typescript-eslint/eslint-plugin": "^5.27.0",
    "@typescript-eslint/parser": "^5.27.0",
    "clean-webpack-plugin": "^4.0.0",
    "css-loader": "^6.7.1",
    "dotenv-webpack": "^7.1.0",
    "enzyme": "^3.9.0",
    "enzyme-adapter-react-16": "^1.7.0",
    "enzyme-to-json": "^3.3.5",
    "eslint": "^8.16.0",
    "eslint-config-react-app": "^7.0.1",
    "eslint-plugin-import": "^2.26.0",
    "eslint-plugin-react": "^7.30.0",
    "html-webpack-plugin": "^5.5.0",
    "jest": "^24.0.0",
    "jest-fetch-mock": "^2.1.2",
    "jest-junit": "8.0.0",
    "lint-staged": "^7.2.0",
    "prettier": "1.13.5",
    "style-loader": "^3.3.1",
    "ts-jest": "^24.0.0",
    "ts-loader": "^9.3.0",
    "webpack": "^5.73.0",
    "webpack-cli": "^4.9.2",
    "webpack-dev-server": "^4.9.2",
    "webpack-merge": "^5.8.0"
  }
}

tsconfig.json

{
  "compilerOptions": {
    "outDir": "dist",
    "sourceMap": true,
    "module": "commonjs",
    "target": "es6",
    "jsx": "react",
    "noImplicitAny": false,
    "allowJs": true,
    "allowSyntheticDefaultImports": true,
    "skipLibCheck": true,
    "esModuleInterop": true,
    "moduleResolution": "node",
    "resolveJsonModule": true,
    "strictPropertyInitialization": false,
    "preserveSymlinks": true,
    "forceConsistentCasingInFileNames": false,
    "noImplicitThis": true,
    "strictNullChecks": true,
    "baseUrl": ".",
    "noImplicitReturns": true,
    "noUnusedLocals": false,
    "paths": {
      "~/*": ["src/*"]
    },
    "rootDir": "./",
    "suppressImplicitAnyIndexErrors": true
  },
  "exclude": [
    "node_modules",
    "scripts",
    "acceptance-tests",
    "jest",
    "coverage",
    "config"
  ]
}

有人可以帮忙吗？

node.js typescript npm webpack webpack-dev-server
2个回答
5
投票

在查看我的 webpack 配置文件并将源映射添加到配置后，我解决了问题：

  devtool: 'inline-source-map',

当我在 DevTools 中再次查看错误时，我注意到一些奇怪的事情，它显示了文件结构之外的 fs、事件和其他文件夹，这导致我对配置中的这行代码产生疑问：

  externalsPresets: { node: true },

根据文档，描述是

将 Node.js 内置模块（如 fs、path 或 vm）视为外部模块，并在使用时通过 require() 加载它们。

所以我删除了它并得到了更多错误，这导致我通过添加以下后备来解决问题：

  resolve: {
    extensions: ['*', '.js', '.jsx', '.tsx', '.ts'],
    alias: {
      '~': path.resolve(__dirname, '../src'),
      handlebars: 'handlebars/dist/handlebars.min.js',
    },
    fallback: {
      fs: false,
      tls: false,
      net: false,
      path: false,
      zlib: false,
      http: false,
      https: false,
      stream: false,
      crypto: false,
      assert: false,
    },
0
投票

转到

webpack.config.js
（您可以在
node modules
中找到它），将以下内容添加到
resolve
：

fallback: {
        "path": false,
        "os": false,
        "crypto": false
  }
最新问题
© www.soinside.com 2019 - 2024. All rights reserved.