react basic project webpack

package.json

{
    "name": "",
    "version": "1.0.0",
    "description": "",
    "main": "index.js",
    "dependencies": {
        "react": "^16.12.0",
        "react-dom": "^16.12.0"
    },
    "devDependencies": {
        "@babel/core": "^7.8.4",
        "@babel/preset-env": "^7.8.4",
        "@babel/preset-react": "^7.8.3",
        "babel-loader": "^8.0.6",
        "webpack": "^4.41.5",
        "webpack-cli": "^3.3.10",
        "webpack-dev-server": "^3.10.2"
    },
    "scripts": {
        "start": "webpack-dev-server --open --mode development",
        "build": "webpack --mode production"
    },
    "keywords": [],
    "author": "",
    "license": "ISC"
}

webpack.config.js

const path = require('path')

module.exports = {
    entry: {
        index: './src/index.js'
    },
    output: {
        path: path.resolve(__dirname, 'dist'),
        filename: 'bundle.js'
    },
    module: {
        rules: [
            {
                test: /\.(js|jsx)$/,
                exclude: /node_modules/,
                use: {
                    loader: 'babel-loader'
                }
            }
        ]
    },
    plugins: [],
    devServer: {
        contentBase: path.join(__dirname, 'public'),
        compress: true,
        port: 3000
    }
}