webpack.config.js

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

module.exports = {
    mode: 'development',
    entry: ['./src/index.js', 'webpack-hot-middleware/client'],
    output: {
        filename: 'bundle.js',
        path: path.resolve(__dirname, 'dist'),
        publicPath: '/'
    },
    module: {
        rules: [
            {
                test: /\.(js|jsx)$/,
                exclude: /node_modules/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        presets: ['@babel/preset-env', '@babel/preset-react']
                    }
                }
            },
            {
                test: /\.css$/,
                use: ['style-loader', 'css-loader']
            },
            {
                test: /\.html$/,
                use: ['html-loader']
            }
        ]
    },
    resolve: {
        extensions: ['.js', '.jsx'],
        modules: [
            'node_modules',
            path.resolve(__dirname, 'src')
        ],
    },
    plugins: [
        new HtmlWebpackPlugin({
            template: './src/index.html',
            inject: 'body',
        }),
        new webpack.HotModuleReplacementPlugin()
    ],
    devServer: {
        hot: true,
        historyApiFallback: true,
        port: 8000
    }
};