Webpack UglifyJs 意外令牌

Question

我在执行 npm run build 时不断收到此错误 真正奇怪的是，当我运行npm run watch 时，编译成功完成。

ERROR in rbz_bundle.js from UglifyJs
Unexpected token: punc (,) [xxx.js:102316,12]

这是我的 package.json 依赖项和脚本：

{
  "scripts": {
    "build": "webpack -p --define process.env.NODE_ENV='\"production\"' --progress --colors --config ./webpack.prod.config.js",
    "watch": "webpack-dev-server -d --hot --inline --define process.env.NODE_ENV='\"development\"' --progress --colors --watch --config ./webpack.dev.config.js",
    "test": "react-scripts test"
  },
  "dependencies": {
    "axios": "^0.17.1",
    "classnames": "^2.2.5",
    "firebase": "^4.10.0",
    "material-ui": "^1.0.0-beta.34",
    "material-ui-icons": "^1.0.0-beta.17",
    "npm": "^5.8.0",
    "prop-types": "^15.6.0",
    "react": "^16.2.0",
    "react-dom": "^16.2.0",
    "react-redux": "^5.0.7",
    "react-router-dom": "^4.2.2",
    "redux": "^3.7.2",
    "redux-thunk": "^2.2.0"
  },
  "devDependencies": {
    "babel-core": "^6.26.0",
    "babel-eslint": "^8.2.2",
    "babel-loader": "^7.1.2",
    "babel-polyfill": "^6.26.0",
    "babel-preset-es2015": "^6.24.1",
    "babel-preset-es2017": "^6.24.1",
    "babel-preset-react": "^6.24.1",
    "babel-preset-stage-0": "^6.24.1",
    "compression-webpack-plugin": "^1.1.7",
    "css-loader": "^0.28.9",
    "eslint": "^4.18.0",
    "eslint-config-react-app": "^2.1.0",
    "eslint-loader": "^1.9.0",
    "eslint-plugin-jsx-a11y": "^6.0.3",
    "eslint-plugin-react": "^7.6.1",
    "extract-text-webpack-plugin": "^3.0.2",
    "html-replace-webpack-plugin": "^2.2.8",
    "node-sass": "^4.7.2",
    "react-hot-loader": "^3.1.3",
    "react-scripts": "^1.1.1",
    "sass-loader": "^6.0.6",
    "style-loader": "^0.19.1",
    "uglifyjs-webpack-plugin": "^1.2.0",
    "webpack": "^3.11.0",
    "webpack-dev-server": "^2.11.1",
    "webpack-watch-livereload-plugin": "0.0.1",
    "write-file-webpack-plugin": "^4.2.0"
  }
}

由于某些未知原因，我无法修复此问题，我看到有人建议添加 "uglify-js": "git+https://github.com/mishoo/UglifyJS2.git#harmony"，但它对我没有任何帮助。

----- 编辑：Webpack.prod.js ------

var webpack = require('webpack')
var path = require('path')
var extractTextPlugin = require('extract-text-webpack-plugin')
require("babel-polyfill")

module.exports = {
  entry: [
    'babel-polyfill', path.resolve(__dirname, 'src', 'index.js')
  ],
  resolve: {
    extensions: ['*', '.js', '.jsx']
  },
  output: {
    path: path.resolve(__dirname, '..', 'xxx', 'static', 'js'),
    publicPath: '../xxx/static/js',
    filename: 'xxx.js'
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: ['babel-loader', 'eslint-loader']
      },
      {
        test: /\.(sass|scss)$/,
        loader: extractTextPlugin.extract({
          fallback: 'style-loader',
          use: ['css-loader', 'sass-loader']
        })
      }
    ]
  },
  plugins: [
    new extractTextPlugin({
      filename: '../xxx/static/css/xxx.css',
      allChunks: true
    }),
    new webpack.optimize.UglifyJsPlugin({
      minimize: true,
      compress: {
        warnings: false
      }
    }),
    new webpack.optimize.AggressiveMergingPlugin(),
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: '"production"'
      }
    })
  ]
}

Answer 1

webpack 好像不支持这种方式webpack.optimize.UglifyJsPlugin

你可以尝试这样使用：

const WebpackUglifyJsPlugin = require('webpack-uglify-js-plugin');

置顶声明插件

module.exports.plugins.push(

        new WebpackUglifyJsPlugin({
            cacheFolder: path.resolve(__dirname, 'target'),
            debug: true,
            minimize: true,
            sourceMap: false,
            output: {
                comments: false
            },
            compressor: {
                warnings: false
            }
        })
    );

查看来自uglifyjs-webpack-plugin的文档