webpack.config.js

const path = require('path');
const ExtractTextPlugin = require('extract-text-webpack-plugin');

module.exports = {
    mode: 'development',
    entry: './src/index.jsx',
    output: {
        path: path.resolve(__dirname, 'public'),
        filename: 'bundle.js'
    },

    module: {
        rules: [
            {
                test: /\.(jsx|js)$/,
                exclude: /node_modules/,
                loader: 'babel-loader',
                options: {
                    presets: ['@babel/preset-env', '@babel/preset-react']
                }
            }, {
                test: /\.(scss|css)$/,
                use: ExtractTextPlugin.extract({
                    fallback: 'style-loader',
                    use: [{
                        loader: 'css-loader',
                        options: {
                            sourceMap: true
                        }
                    }, {
                        loader: 'sass-loader',
                        options: {
                            sourceMap: true
                        }
                    }]
                })
            }, {
                test: /\.(jpg|png|svg)$/,
                loader: 'file-loader',
                options: {
                    name: 'images/[name].[ext]'
                }
            }, {
                test: /\.otf$/,
                loader: 'file-loader',
                options: {
                    name: 'fonts/[name].[ext]'
                }
            }
        ]
    },

    plugins: [
        new ExtractTextPlugin({
            filename: 'style.css',
            allChunks: true
        })
    ],

    resolve: {
        extensions: ['.js', '.jsx']
    },

    devtool: 'source-map',

    devServer: {
        inline: true,
        contentBase: 'public/',
        historyApiFallback: true
    }
};