webpack.config.js

const webpack = require('webpack');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const pkg = require('./package.json');
const path = require('path');
const libraryName= pkg.name;
module.exports = {
    entry: path.join(__dirname, "./src/ad-pattern-lock.js"),
    output: {
        path: path.join(__dirname, './dist'),
        filename: 'index.js',
        library: libraryName,
        libraryTarget: 'commonjs2',
        publicPath: '/dist/'
    },
    plugins: [
        new MiniCssExtractPlugin({
            // Options similar to the same options in webpackOptions.output
            // both options are optional
            filename: "[name].css",
            chunkFilename: "[id].css"
        })
    ],
    node: {
        net: 'empty',
        tls: 'empty',
        dns: 'empty'
    },
    module: {
        rules : [
            {
                test: /\.css$/,
                use: [
                    MiniCssExtractPlugin.loader,
                    "css-loader",
                ]
            },
            {
                test: /\.(js|jsx)$/,
                use: ["babel-loader"],
                include: path.resolve(__dirname, "src"),
                exclude: /node_modules/,
            }]
    },
    resolve: {
        alias: {
            'react': path.resolve(__dirname, './node_modules/react') ,
            'react-dom': path.resolve(__dirname, './node_modules/react-dom'),
            'assets': path.resolve(__dirname, 'assets')
        }
    },
    externals: {
        // Don't bundle react or react-dom
        react: {
            commonjs: "react",
            commonjs2: "react",
            amd: "React",
            root: "React"
        },
        "react-dom": {
            commonjs: "react-dom",
            commonjs2: "react-dom",
            amd: "ReactDOM",
            root: "ReactDOM"
        }
    }
};