Simplest Hello World Webpack output with global export

bundle-global.js

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/******/ 	// The require function
/******/ 	function __webpack_require__(moduleId) {

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/******/ 		if(installedModules[moduleId])
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/******/ 		module.loaded = true;

/******/ 		// Return the exports of the module
/******/ 		return module.exports;
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/******/ 	// expose the modules object (__webpack_modules__)
/******/ 	__webpack_require__.m = modules;

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/************************************************************************/
/******/ ([
/* 0 */
/***/ function(module, exports, __webpack_require__) {

	__webpack_require__(1);
	module.exports = __webpack_require__(3);


/***/ },
/* 1 */
/***/ function(module, exports, __webpack_require__) {

	// Make sure the following files are
	//import HelloWorld from './HelloWorld';
	'use strict';

	function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

	var _HelloString = __webpack_require__(2);

	//import React from 'react';

	var _HelloString2 = _interopRequireDefault(_HelloString);

/***/ },
/* 2 */
/***/ function(module, exports) {

	"use strict";

	Object.defineProperty(exports, "__esModule", {
	  value: true
	});
	var HelloString = {
	  world: function world() {
	    return "Hello WORLD! Will this work??";
	  }
	};

	//global.HelloString = HelloString;

	exports["default"] = HelloString;
	module.exports = exports["default"];

/***/ },
/* 3 */
/***/ function(module, exports) {

	/* WEBPACK VAR INJECTION */(function(__dirname) {//const path = require('path');

	"use strict";

	module.exports = {
	  context: __dirname,
	  entry: ["Global"],
	  output: {
	    path: "../app/assets/javascripts/generated",
	    filename: "bundle.js"
	  },
	  resolve: {
	    root: [path.join(__dirname, "js")],
	    extensions: ["", ".js", ".jsx"]
	  },
	  module: {
	    loaders: [{ loader: "babel-loader" }, { test: "HelloString", loader: "expose?HelloString" }]
	  }
	};
	/* WEBPACK VAR INJECTION */}.call(exports, "/"))

/***/ }
/******/ ]);

Example of WEBPACK VAR INJECTION