webpack.config.js

const path = require('path')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const CleanWebpackPlugin = require('clean-webpack-plugin')
const webpack = require('webpack')

module.exports = {
    entry: './client/index.js',
    output: {
        path: path.resolve(__dirname, 'dist'),
        filename: 'bundle.js',
    },
    devtool: 'inline-source-map',
    plugins: [
        // new CleanWebpackPlugin(['dist/*']) for < v2 versions of CleanWebpackPlugin
        new CleanWebpackPlugin(),
        new HtmlWebpackPlugin({
            template: path.join(__dirname, 'client', 'index.html'),
        }),
        new webpack.HotModuleReplacementPlugin(),
    ],
    devServer: {
        contentBase: path.join(__dirname, 'dist'),
        compress: true,
        hot: true,
        port: 1234,
    },
    resolve: {
        alias: {
            'react-dom': '@hot-loader/react-dom',
        },
    },
    module: {
        rules: [
            {
                test: /\.m?js$/,
                exclude: /(node_modules|bower_components)/,
                use: {
                    loader: 'babel-loader',
                    options: {},
                },
            },
            {
                test: /\.css$/,
                use: ['style-loader', 'css-loader'],
            },
            {
                test: /\.(png|jpe?g|gif)$/,
                use: [
                    {
                        loader: 'file-loader',
                        options: {},
                    },
                ],
            },
        ],
    },
}