book_admin/webpack.base.js

const VueLoaderPlugin = require('vue-loader/lib/plugin');
// const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
const MiniCssExtractPlugin = require('mini-css-extract-plugin');

module.exports = {
    module: {
        rules: [
            {
                test: /\.vue$/,
                loader: 'vue-loader',
                options: {
                    loaders: {
                        scss: 'style-loader!css-loader!sass-loader'
                    },
                },
            },
            {
                test: /\.css$/,
                use:[
                    {
                        loader: MiniCssExtractPlugin.loader,
                        options: {
                            hmr: process.env.NODE_ENV === 'development',
                        },
                    },
                    'css-loader',
                ]
            },
            {
                test: /\.js$/,
                exclude: /node_modules/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        presets: [
                            ['@babel/preset-env']
                        ]
                    }
                }
            },
            {
                test: /\.(png|jpg|gif|svg|woff|ttf)$/,
                loader: 'file-loader',
                options: {
                    name: '[name].[ext]?[hash]'
                }
            }
        ]
    },
    plugins: [
        new MiniCssExtractPlugin({
            // Options similar to the same options in webpackOptions.output
            // all options are optional
            filename: '[name]/main.css',
            ignoreOrder: false, // Enable to remove warnings about conflicting order
        }),
        new VueLoaderPlugin(),
         // new BundleAnalyzerPlugin(),
    ]
};