webpack.config.js

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

module.exports = {
    entry: [
      './src/index.js',
      './src/assets/scss/main.scss',
    ],
    module: {
        rules: [
            {
                test: /\.(js|jsx)$/,
                exclude: /node_modules/,
                use: {
                    loader: 'babel-loader'
                }
            },
            {
                test: /\.scss$/,
                use: ExtractTextPlugin.extract({
                    fallback: "style-loader",
                    use: "css-loader!sass-loader",
                })
            },
            {
                test: /\.(png|jpg|gif|woff|svg|woff2)$/,
                use: [
                    {
                        loader: 'file-loader',
                        options: {},
                    },
                ],
            },
        ],
    },
    output: {
        path: path.resolve('dist'),
        publicPath: '/',
        filename: 'bundle.js'
    },
    devServer: {
        contentBase: '/public',
    },
    plugins: [
        new HtmlWebpackPlugin({
            template: './public/index.html',
            filename: './index.html'
        }),
        new ExtractTextPlugin('style.css')
    ]
};