你应该像这样导出一个数组:

const path = require('path');
const webpack = require('webpack');

const libName = 'YourLibraryName';

function getConfig(env) {
  const config = {
    mode: env,
    output: {
      path: path.resolve('dist'),
      library: libName,
      libraryTarget: 'umd',
      filename: env === 'production' ? `${libName}.min.js` : `${libName}.js`
    },
    target: 'web',
    .... your shared options ...
  };

  return config;
}

module.exports = [
  getConfig('development'),
  getConfig('production'),
];

你可以为webpack创建两个配置，一个可以减少代码，另一个则不能(只需删除优化)。然后同时运行两个配置$ webpack && webpack——config webpack.config.min.js

webpack.config.js:

const webpack = require("webpack");

module.exports = {
  entry: {
    "bundle": "./entry.js",
    "bundle.min": "./entry.js",
  },
  devtool: "source-map",
  output: {
    path: "./dist",
    filename: "[name].js"
  },
  plugins: [
    new webpack.optimize.UglifyJsPlugin({
      include: /\.min\.js$/,
      minimize: true
    })
  ]
};

从Webpack 4开始，Webpack .optimize. uglifyjsplugin已被弃用，使用它会导致错误:

webpack.optimize.UglifyJsPlugin已被删除，请使用config.optimization.minimize代替

正如手册解释的那样，插件可以用最小化选项代替。自定义配置可以通过指定UglifyJsPlugin实例提供给插件:

const webpack = require("webpack");
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');

module.exports = {
  // ...
  optimization: {
    minimize: true,
    minimizer: [new UglifyJsPlugin({
      include: /\.min\.js$/
    })]
  }
};

这是一个简单的设置。一个更有效的解决方案是同时使用Gulp和Webpack，一次完成同样的事情。

我也有同样的问题，必须满足以下所有要求:

缩小版+非缩小版(如问题所示) ES6 跨平台(Windows + Linux)。

我最终解决如下:

webpack.config.js:

const path = require('path');
const MinifyPlugin = require("babel-minify-webpack-plugin");

module.exports = getConfiguration;

function getConfiguration(env) {
    var outFile;
    var plugins = [];
    if (env === 'prod') {
        outFile = 'mylib.dev';
        plugins.push(new MinifyPlugin());
    } else {
        if (env !== 'dev') {
            console.log('Unknown env ' + env + '. Defaults to dev');
        }
        outFile = 'mylib.dev.debug';
    }

    var entry = {};
    entry[outFile] = './src/mylib-entry.js';

    return {
        entry: entry,
        plugins: plugins,
        output: {
            filename: '[name].js',
            path: __dirname
        }
    };
}

package.json:

{
    "name": "mylib.js",
    ...
    "scripts": {
        "build": "npm-run-all webpack-prod webpack-dev",
        "webpack-prod": "npx webpack --env=prod",
        "webpack-dev": "npx webpack --env=dev"
    },
    "devDependencies": {
        ...
        "babel-minify-webpack-plugin": "^0.2.0",
        "npm-run-all": "^4.1.2",
        "webpack": "^3.10.0"
    }
}

然后我可以通过(不要忘记npm install之前):

npm run-script build

你可以用不同的参数运行webpack两次:

$ webpack --minimize

然后检查webpack.config.js中的命令行参数:

var path = require('path'),
  webpack = require('webpack'),
  minimize = process.argv.indexOf('--minimize') !== -1,
  plugins = [];

if (minimize) {
  plugins.push(new webpack.optimize.UglifyJsPlugin());
}

...

例子webpack.config.js

我找到了解决这个问题的新方法。

这使用了一个配置数组，使webpack能够并行地构建精简版和非精简版。这使得构建更快。不需要运行webpack两次。不需要额外的插件。只是webpack。

webpack.config.js

const devConfig = {
  mode: 'development',
  entry: { bundle: './src/entry.js' },
  output: { filename: '[name].js' },
  module: { ... },
  resolve: { ... },
  plugins: { ... }
};

const prodConfig = {
  ...devConfig,
  mode: 'production',
  output: { filename: '[name].min.js' }
};

module.exports = (env) => {
  switch (env) {
    case 'production':
      return [devConfig, prodConfig];
    default:
      return devConfig;
  }
};

运行webpack将只生成非缩小版本。

运行webpack——env=production将同时构建缩小版和非缩小版。