webpack.config.js

const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const {CleanWebpackPlugin} = require('clean-webpack-plugin');

module.exports = {
    mode: process.env.NODE_ENV || 'production',
    plugins: [
        new CleanWebpackPlugin(),
        new MiniCssExtractPlugin({
            filename: '[name].css'
        })
    ],
    entry: {
        index: './src/match.scss',
    },
    devtool: 'source-map',
    module: {
        rules: [
            {
                test: /\.scss$/,
                use: [
                    MiniCssExtractPlugin.loader,
                    {
                        loader: 'css-loader',
                        options: {
                            sourceMap: true
                        }
                    },
                    {
                        loader: 'sass-loader',
                        options: {
                            sourceMap: true
                        }
                    }
                ]
            }
        ]
    }
};