New: Add first proof of concept

.gitignore

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+/.idea/

examples/umd/.gitignore

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+/dist/

examples/umd/index.js

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+const react = require('react')

examples/umd/webpack.config.js

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+const { resolve } = require('path')
+const MicroservicesWebpackPlugin = require('../../index.js')
+
+module.exports = {
+	entry: resolve(__dirname, 'index.js'),
+	externals: {
+		react: 'react'
+	},
+	output: {
+		path: resolve(__dirname, 'dist'),
+		libraryTarget: 'amd'
+	},
+	plugins: [
+		new MicroservicesWebpackPlugin([
+			{ name: 'react', path: `umd/react.production.min.js` },
+		])
+	]
+}

index.js

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+const { join } = require('path');
+const { RawSource } = require('webpack-sources');
+
+class MicroservicesWebpackPlugin {
+	constructor(
+		modules
+	) {
+		this.modules = modules || [];
+		this.url = 'https://unpkg.com/:name@:version/:path';
+		this.paramsRegex = /:([a-z]+)/gi;
+		this.node_modules = join(process.cwd(), 'node_modules');
+
+		this.modules = this.modules
+			.map(({ name, ...other }) => ({
+				name,
+				...other,
+				version: require(join(this.node_modules, name, 'package.json')).version
+			}))
+			.map(({ name, version, path }) => {
+				if (!path.includes('.js')) {
+					throw new Error(`Unsupported extension in ${path}`);
+				}
+
+				const cdn = this.url.replace(this.paramsRegex, (_, type) => ({
+					name,
+					version,
+					path
+				})[type]);
+
+				return {
+					name,
+					cdn
+				}
+			})
+	}
+
+	apply(compiler) {
+		compiler.hooks.emit.tapAsync(MicroservicesWebpackPlugin.name, this.tapAsync.bind(this))
+	}
+
+	tapAsync(compilation, callback) {
+		compilation.assets = Object.keys(compilation.assets)
+			.map((fileName) => {
+				if (!fileName.includes('.js')) {
+					throw new Error(`Unsupported extension in ${path}`);
+				}
+
+				const value = [
+					this.modules
+						.map(({ cdn, name }) => `define('${name}', ['${cdn}'], v => v)`)
+						.join('\n'),
+					compilation.assets[fileName].source()
+				].join('\n');
+
+				return {[fileName]: new RawSource(value)};
+			})
+			.reduce((previous, current) => ({ ...previous, ...current }), {});
+
+		callback()
+	}
+}
+
+// @todo add to externals, remove from chunk
+module.exports = MicroservicesWebpackPlugin;