webpack.config.js

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

module.exports = {
    entry: './src/index.js',
    output: {
        filename: "js/index.js",
        path: path.resolve(__dirname, 'public')
    },
    plugins: [
        new CleanWebpackPlugin(['dist']),
        new MiniCssExtractPlugin({
            // Options similar to the same options in webpackOptions.output
            // both options are optional
            filename: "css/[name].css",
            chunkFilename: "css/[id].css"
        })
    ],
    module: {
        rules: [
            {
                test: /\.scss$/,
                use: [
                    MiniCssExtractPlugin.loader,
                    'css-loader',
                    'sass-loader',

                ]
            },
            {
                test: /\.(woff|woff2|eot|ttf|otf)$/,
                use: [
                    'file-loader'
                ]
            }
        ]
    }
};