Webpack 无法缩小CSS文件

我正试图在我的项目中使用网页4。除了

提取文本网页包插件

，所有插件都可以工作

实际行为：当我构建项目时，完全没有错误，并且文件也缩小了

预期行为：在

dist

文件夹中获取缩小的CSS文件（

styles.CSS

）

输出

文件结构

webpack.config

const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ExtractTextPlugin = require('extract-text-webpack-plugin');

module.exports = {
    entry: {
        'index': './src/index.js',
    },
    resolveLoader: {
        modules: [
            'node_modules',
        ],
    },
    mode: 'production',
    module: {
        rules: [
            {
                test: /\.html$/,
                use: [
                    {
                        loader: 'html-loader',
                        options: {
                            minimize: true,
                        },
                    },
                ],
            },
            {
                test: /\.css$/,
                use: ExtractTextPlugin.extract( 'css-loader' ),
            },
            {
                test: /\.(png|jpg|gif)$/,
                use: [
                    {
                        loader: 'file-loader',
                        options: {
                            name: '[path][name].[ext]',
                            emitFile: false,
                        },
                    },
                ],
            },
        ],
    },
    plugins: [
        new ExtractTextPlugin( {
            filename: './src/styles.css',
        }),
        new HtmlWebpackPlugin({
            template: './src/index.html',
            filename: 'index.html',
            inject: 'body',
            hash: true,
            minify: {
                removeAttributeQuotes: true,
                collapseWhitespace: true,
                html5: true,
                removeComments: true,
                removeEmptyAttributes: true,
                minifyCSS: true,
            },
        }),
        new UglifyJsPlugin({
            cache: true,
            parallel: true,
            uglifyOptions: {
                compress: false,
                ecma: 6,
                mangle: true,
            },
            sourceMap: true,
        }),
    ],
};

const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ExtractTextPlugin = require('extract-text-webpack-plugin');

module.exports = {
    entry: ['./src/index.js', './src/styles.css'],
    resolveLoader: {
        modules: [
            'node_modules',
        ],
    },
    mode: 'production',
    module: {
        rules: [
            {
                test: /\.html$/,
                use: [
                    {
                        loader: 'html-loader',
                        options: {
                            minimize: true,
                        },
                    },
                ],
            },
            {
                test: /\.css$/,
                use: ExtractTextPlugin.extract({
                    loader: 'css-loader',
                    options: {
                        minimize: true,
                    },
                }),
            },
            {
                test: /\.(png|jpg|gif)$/,
                use: [
                    {
                        loader: 'file-loader',
                        options: {
                            name: '[path][name].[ext]',
                            emitFile: false,
                        },
                    },
                ],
            },
        ],
    },
    plugins: [
        new ExtractTextPlugin( {
            filename: './styles.css',
        }),
        new HtmlWebpackPlugin({
            template: './src/index.html',
            filename: 'index.html',
            inject: 'body',
            hash: true,
            minify: {
                removeAttributeQuotes: true,
                collapseWhitespace: true,
                html5: true,
                removeComments: true,
                removeEmptyAttributes: true,
                minifyCSS: true,
            },
        }),
        new UglifyJsPlugin({
            cache: true,
            parallel: true,
            uglifyOptions: {
                compress: false,
                ecma: 6,
                mangle: true,
            },
            sourceMap: true,
        }),
    ],
};

你需要：

将样式表添加到入口点的步骤

条目：['./src/index.js'，'./src/styles.css']

将选项添加到

ExtractTextPlugin

use: ExtractTextPlugin.extract({
   loader: 'css-loader',
   options: {
       minimize: true,
   },
})

更改

插件中文件的路径名

文件名：'./styles.css'

完整配置

const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ExtractTextPlugin = require('extract-text-webpack-plugin');

module.exports = {
    entry: {
        'index': './src/index.js',
    },
    resolveLoader: {
        modules: [
            'node_modules',
        ],
    },
    mode: 'production',
    module: {
        rules: [
            {
                test: /\.html$/,
                use: [
                    {
                        loader: 'html-loader',
                        options: {
                            minimize: true,
                        },
                    },
                ],
            },
            {
                test: /\.css$/,
                use: ExtractTextPlugin.extract( 'css-loader' ),
            },
            {
                test: /\.(png|jpg|gif)$/,
                use: [
                    {
                        loader: 'file-loader',
                        options: {
                            name: '[path][name].[ext]',
                            emitFile: false,
                        },
                    },
                ],
            },
        ],
    },
    plugins: [
        new ExtractTextPlugin( {
            filename: './src/styles.css',
        }),
        new HtmlWebpackPlugin({
            template: './src/index.html',
            filename: 'index.html',
            inject: 'body',
            hash: true,
            minify: {
                removeAttributeQuotes: true,
                collapseWhitespace: true,
                html5: true,
                removeComments: true,
                removeEmptyAttributes: true,
                minifyCSS: true,
            },
        }),
        new UglifyJsPlugin({
            cache: true,
            parallel: true,
            uglifyOptions: {
                compress: false,
                ecma: 6,
                mangle: true,
            },
            sourceMap: true,
        }),
    ],
};

const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ExtractTextPlugin = require('extract-text-webpack-plugin');

module.exports = {
    entry: ['./src/index.js', './src/styles.css'],
    resolveLoader: {
        modules: [
            'node_modules',
        ],
    },
    mode: 'production',
    module: {
        rules: [
            {
                test: /\.html$/,
                use: [
                    {
                        loader: 'html-loader',
                        options: {
                            minimize: true,
                        },
                    },
                ],
            },
            {
                test: /\.css$/,
                use: ExtractTextPlugin.extract({
                    loader: 'css-loader',
                    options: {
                        minimize: true,
                    },
                }),
            },
            {
                test: /\.(png|jpg|gif)$/,
                use: [
                    {
                        loader: 'file-loader',
                        options: {
                            name: '[path][name].[ext]',
                            emitFile: false,
                        },
                    },
                ],
            },
        ],
    },
    plugins: [
        new ExtractTextPlugin( {
            filename: './styles.css',
        }),
        new HtmlWebpackPlugin({
            template: './src/index.html',
            filename: 'index.html',
            inject: 'body',
            hash: true,
            minify: {
                removeAttributeQuotes: true,
                collapseWhitespace: true,
                html5: true,
                removeComments: true,
                removeEmptyAttributes: true,
                minifyCSS: true,
            },
        }),
        new UglifyJsPlugin({
            cache: true,
            parallel: true,
            uglifyOptions: {
                compress: false,
                ecma: 6,
                mangle: true,
            },
            sourceMap: true,
        }),
    ],
};

---

看看这个。希望对配置有所帮助。对于几个月后回答这个问题的人，

css loader

不再有

minimize

选项，现在建议使用

cssnano

或

优化css资产网页包插件进行后期处理。要扩展上面的评论，以下是webpack v4文档的链接，说明如何设置CSS缩小：