根据这一行:https://github.com/pingyuanChen/webpack-uglify-js-plugin/blob/master/index.js#L117

应该是这样的:

var webpack = require("webpack");

module.exports = {

  entry: "./entry.js",
  devtool: "source-map",
  output: {
    path: "./dist",
    filename: "bundle.js"
  },
  plugins: [
    new webpack.optimize.UglifyJsPlugin({
     minimize: true,
     compress: false
    })
  ]
};

实际上，通过根据env / argv策略导出不同的配置，您可以拥有多个构建。

也许我来晚了，但我也有同样的问题，所以我为此写了一个unminifiedwebpack插件。

安装

npm install --save-dev unminified-webpack-plugin

使用

var path = require('path');
var webpack = require('webpack');
var UnminifiedWebpackPlugin = require('unminified-webpack-plugin');

module.exports = {
    entry: {
        index: './src/index.js'
    },
    output: {
        path: path.resolve(__dirname, 'dist'),
        filename: 'library.min.js'
    },
    plugins: [
        new webpack.optimize.UglifyJsPlugin({
            compress: {
                warnings: false
            }
        }),
        new UnminifiedWebpackPlugin()
    ]
};

通过上述操作，您将得到library.min.js和library.js两个文件。不需要执行webpack两次，它只是工作!^ ^

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

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

你可以使用一个配置文件，并使用一个环境变量有条件地包含UglifyJS插件:

const webpack = require('webpack');
const TerserPlugin = require('terser-webpack-plugin');

const PROD = JSON.parse(process.env.PROD_ENV || '0');

module.exports = {

  entry: './entry.js',
  devtool: 'source-map',
  output: {
    path: './dist',
    filename: PROD ? 'bundle.min.js' : 'bundle.js'
  },
  optimization: {
    minimize: PROD,
    minimizer: [
      new TerserPlugin({ parallel: true })
  ]
};

然后当你想缩小它时，设置这个变量:

$ PROD_ENV=1 webpack

编辑:

正如评论中提到的，通常使用NODE_ENV(按照约定)来说明特定环境是生产环境还是开发环境。要检查它，你也可以设置const PROD = (process.env。NODE_ENV === 'production')，然后正常继续。