Webpack 4:mini-css-extract-plugin + sass-loader + splitChunks

css CSS

凯达蒙

2020-03-24

我有以下示例配置,可在Webpack 4中使用mini-css-extract-plugin:

entry: {
   a: ['./js/a.js', './scss/a.scss'],
   b: ['./js/b.js', './scss/b.scss']
},
module: {
    rules: [
       [...],
       {
        test: /\.(css|sass|scss)$/,
        use: [
            MiniCssExtractPlugin.loader,
            {
                loader: 'css-loader',
                options: {
                    importLoaders: 2,
                    sourceMap: true
                }
            },
            {
                loader: 'postcss-loader',
                options: {
                    plugins: () => [
                        require('autoprefixer')
                    ],
                    sourceMap: true
                }
            },
            {
                loader: 'sass-loader',
                options: {
                    sourceMap: true
                }
            }
        ]
},
optimization: {
    splitChunks: {
        cacheGroups: {
            js: {
                test: /\.js$/,
                name: "commons",
                chunks: "all",
                minChunks: 7,
            },
            css: {
                test: /\.(css|sass|scss)$/,
                name: "commons",
                chunks: "all",
                minChunks: 2,
            }
        }
    }
},
plugins: [
    new MiniCssExtractPlugin({
        filename: "dist/[name].css",
    }),
]

以及以下sass文件:

// a.scss
@import 'libA.scss';
@import 'libB.css';
[...] 

// b.scss
@import 'libA.scss';
@import 'libB.css';
[...]

当我运行webpack时,libB.css它没有插入commons.css捆绑中libA.scss

通常,每次导入.css文件都会由splitChunks选项处理(仅css在名称中指定了扩展名时),而sass导入则不会。

我有一个包含多个sass入口点和许多@import sass组件的项目,我想创建一个共享sass模块的公共包。

第3185篇《Webpack 4:mini-css-extract-plugin + sass-loader + splitChunks》来自Winter(https://github.com/aiyld/aiyld.github.io)的站点

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