问Webpack4优化问题
EN

Stack Overflow用户

提问于 2018-10-06 22:23:09

回答 1查看 1.8K关注 0票数 2

快凌晨两点了，为了找个错误，我简直要发疯了。

"Error: webpack.optimize.UglifyJsPlugin has been removed, please use config.optimization.minimize instead."控制台告诉我100次...

我试着这样修改我的webpack.config.js：

optimization: {
        minimize: false
      }

还有这个

  optimization: {
        minimizer: [
          // we specify a custom UglifyJsPlugin here to get source maps in production
          new UglifyJsPlugin({
            cache: true,
            parallel: true,
            uglifyOptions: {
              compress: false,
              ecma: 6,
              mangle: true
            },
            sourceMap: true
          })
        ]
      },

总是同一个问题..。

我的文件是正常的，因为它也是捆绑的，但当我尝试打开它时

"start": "webpack-dev-server --mode development --open --hot"

或

"start": "opener http://localhost:3000 & httpster -p 3000 -d ./dist"

好吧，这没关系，我读了很多关于这个的文章，这是webpack3 -> webpack4版本的一些问题，但我复制了一些配置代码，就是想不出如何解决它(也许是因为我一个接一个地12+小时使用笔记本电脑，累得要死，但我要睡觉了，只希望当我醒来的时候有人，伟大的人，也能帮助我解决这个问题。

如果你是那种想给我一篇文章而不是答案的人--这也很棒！我充满了学习新东西的热情。

但是，如果你在答案和文章上提供帮助-它会给你带来100+的运气:)

下面是我的webpack.config.js和package.json：

(我留下这个const UglifyJsPlugin = require('uglifyjs-webpack-plugin');只是为了向您展示我也试图用它做一些优化)

/webpack.config.js


var webpack = require("webpack")
var path = require("path")
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
process.noDeprecation = true

module.exports = {
    entry: "./src/index.js",
    output: {
        path:path.join(__dirname, 'dist', 'assets'),
        filename: "bundle.js",
        sourceMapFilename: 'bundle.map'
    },
    devtool: '#source-map',
    module: {
        rules: [
            {
                test: /\.js$/,
                exclude: /(node_modules)/,
                loader: 'babel-loader',
                query: {
                    presets: ['env', 'stage-0', 'react']
                }
            },
            {
                test: /\.css$/,
                use: ['style-loader','css-loader', {
                    loader: 'postcss-loader',
                    options: {
                      plugins: () => [require('autoprefixer')]
                    }}]
            },
            {
                test: /\.scss/,
                use: ['style-loader','css-loader', {
                    loader: 'postcss-loader',
                    options: {
                      plugins: () => [require('autoprefixer')]
                    }}, 'sass-loader']
            }
        ]
    },
    plugins: [
        new webpack.DefinePlugin({
            "process.env": {
                NODE_ENV: JSON.stringify("production")
            }
        }),
        new webpack.optimize.UglifyJsPlugin({
            sourceMap: true,
            warnings: false,
            mangle: false
        })
    ]
}

    /package.json 

{
  "name": "try",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "webpack-dev-server --mode development --open --hot",
    "build": "webpack --mode production"
  },
  "keywords": [
    "React",
    "state",
    "setState",
    "explicitly",
    "passing",
    "props"
  ],
  "author": "andrii",
  "license": "ISC",
  "devDependencies": {
    "babel-core": "^6.26.3",
    "babel-loader": "^7.1.5",
    "babel-preset-env": "^1.7.0",
    "babel-preset-react": "^6.24.1",
    "css-loader": "^1.0.0",
    "html-webpack-plugin": "^3.2.0",
    "postcss-loader": "2.0.6",
    "style-loader": "^0.23.0",
    "uuid": "^3.3.2",
    "sass-loader": "6.0.6",
    "webpack": "^4.19.0",
    "webpack-cli": "^3.1.0"
  },
  "dependencies": {
    "babel-plugin-syntax-object-rest-spread": "^6.13.0",
    "babel-preset-stage-2": "^6.24.1",
    "httpster": "1.0.3",
    "isomorphic-fetch": "^2.2.1",
    "prop-types": "^15.6.2",
    "react": "^16.5.1",
    "react-dom": "^16.5.1",
    "react-icons": "^3.1.0",
    "react-redux": "5.0.6",
    "react-router-dom": "^4.3.1",
    "uglifyjs-webpack-plugin": "^2.0.1",
    "webpack-dev-server": "^3.1.8"
  }
}

此外，为了避免任何愤怒的情绪，我听了这个：http://prntscr.com/l31bam on replay on 2+ hours如果你喜欢古典音乐和钢琴-这首曲子很棒。

感谢您的宝贵时间，祝您度过愉快的一天！

json

reactjs

webpack

javascript

回答 1

Stack Overflow用户

发布于 2018-10-07 03:06:50

我在生产环境中使用webpack4，也必须使用UglifyJsPlugin。

首先，我要确保您的package.json中有正确版本的webpack和UglifyJsPlugin我目前有"webpack": "4.20.2",和"uglifyjs-webpack-plugin": "2.0.1",来确保它们已正确安装我建议您通过运行：rm -rf node_modules && npm install或rm -rf node_modules && yarn install来仔细检查是否已安装正确版本。

接下来，我将检查配置。我的webpack.production.js如下所示

 // ...

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

 // ...

     mode: 'production',
     optimization: {
        minimizer: [
            new UglifyJsPlugin({
                cache: true,
                parallel: true,
                sourceMap: false, // set to true if you want JS source maps
            }),
        ],
    },
    module: {
        //...
   },