webpack/examples/multi-part-library/webpack.config.js

var path = require("path");
module.exports = {
	entry: {
		alpha: "./alpha",
		beta: "./beta"
	},
	output: {
		path: path.join(__dirname, "js"),
		filename: "MyLibrary.[name].js",
		library: ["MyLibrary", "[name]"],
		libraryTarget: "umd"
	}
}