webpack.config.js

const webpack = require('webpack')
const MiniCssExtractPlugin = require('mini-css-extract-plugin');

module.exports = {
    entry: './src/index.jsx',
    output: {
        path: __dirname + '/public',
        filename: './app.js'
    },
    devServer: {
        port: 8080,
        contentBase: './public',
        historyApiFallback: true
    },
    resolve: {
        extensions: ['*', '.js', '.jsx'],
        alias: {
            modules: __dirname + '/node_modules',
            jquery: 'modules/jquery/dist/jquery.min.js',
            bootstrap: 'modules/bootstrap3/dist/js/bootstrap.min.js'
        }
    },
    plugins: [
        new webpack.ProvidePlugin({
            $: 'jquery',
            jQuery: 'jquery',
            'window.jQuery': 'jquery'
        }),
        new MiniCssExtractPlugin({ filename: 'app.css' })
    ],
    module: {
        rules: [
            {
                test: /.js[x]?$/,
                exclude: /node_modules/,
                use: [
                    {
                        loader: 'babel-loader',
                        query: {
                            presets: ['env', 'react'],
                            plugins: ['transform-object-rest-spread']
                        }
                    }
                ]
            },
            {
                test: /\.(sa|sc|c)ss$/,
                use: [
                    {
                        loader: MiniCssExtractPlugin.loader,
                        options: {
                            hmr: process.env.NODE_ENV === 'development',
                        },
                    },
                    'css-loader'
                ],
            },
            {
                test: /\.(ttf|eot|svg|gif|jpg|png|woff|woff2)(\?v=[0-9]\.[0-9]\.[0-9])?$/,
                use: [
                    {
                        loader: 'file-loader'
                    }
                ]
            }
        ]
    }
}