webpack.config.js

const path = require("path");

module.exports = {
    resolve: {
        modules: [
            path.resolve("./lib"),
            path.resolve("./node_modules")
        ]
    },
    entry: {
        vendor: ["babel-polyfill", "react", "react-dom", "prop-types", "axios", "lodash.debounce", "lodash.pickby"],
        app: ["./lib/renderers/dom.js"]
    },
    output: {
        path: path.resolve(__dirname, "public"),
        filename: "[name].js"
    },
    module: {
        rules: [
            {
                test: /\.(js|jsx)$/,
                exclude: /node_modules/,
                use: {
                    loader: "babel-loader",
                    options: { presets: ["react", "env", "stage-2"] }
                }
            }
        ]
    },
    optimization: {
        splitChunks: {
            cacheGroups: {
                defaultVendors: {
                    filename: "[name].bundle.js"
                }
            }
        }
    }
};