This example combines Code Splitting and Loaders. Make sure you have read the documentation of the examples that show the feature alone.

The bundle loader is used to create a wrapper module for file.js that loads this module on demand. The wrapper module returns a function that can be called to asynchronously receive the inner module.

example.js

require("bundle-loader!./file.js")(function(fileJsExports) {
	console.log(fileJsExports);
});

file.js

module.exports = "It works";

js/output.js

/******/ (function(modules) { /* webpackBootstrap */ })

/******/ (function(modules) { // webpackBootstrap
/******/ 	// install a JSONP callback for chunk loading
/******/ 	var parentJsonpFunction = window["webpackJsonp"];
/******/ 	window["webpackJsonp"] = function webpackJsonpCallback(chunkIds, moreModules, executeModules) {
/******/ 		// add "moreModules" to the modules object,
/******/ 		// then flag all "chunkIds" as loaded and fire callback
/******/ 		var moduleId, chunkId, i = 0, resolves = [], result;
/******/ 		for(;i < chunkIds.length; i++) {
/******/ 			chunkId = chunkIds[i];
/******/ 			if(installedChunks[chunkId]) {
/******/ 				resolves.push(installedChunks[chunkId][0]);
/******/ 			}
/******/ 			installedChunks[chunkId] = 0;
/******/ 		}
/******/ 		for(moduleId in moreModules) {
/******/ 			if(Object.prototype.hasOwnProperty.call(moreModules, moduleId)) {
/******/ 				modules[moduleId] = moreModules[moduleId];
/******/ 			}
/******/ 		}
/******/ 		if(parentJsonpFunction) parentJsonpFunction(chunkIds, moreModules, executeModules);
/******/ 		while(resolves.length) {
/******/ 			resolves.shift()();
/******/ 		}
/******/
/******/ 	};
/******/
/******/ 	// The module cache
/******/ 	var installedModules = {};
/******/
/******/ 	// objects to store loaded and loading chunks
/******/ 	var installedChunks = {
/******/ 		1: 0
/******/ 	};
/******/
/******/ 	var resolvedPromise = new Promise(function(resolve) { resolve(); });
/******/
/******/ 	// The require function
/******/ 	function __webpack_require__(moduleId) {
/******/
/******/ 		// Check if module is in cache
/******/ 		if(installedModules[moduleId]) {
/******/ 			return installedModules[moduleId].exports;
/******/ 		}
/******/ 		// Create a new module (and put it into the cache)
/******/ 		var module = installedModules[moduleId] = {
/******/ 			i: moduleId,
/******/ 			l: false,
/******/ 			exports: {}
/******/ 		};
/******/
/******/ 		// Execute the module function
/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
/******/
/******/ 		// Flag the module as loaded
/******/ 		module.l = true;
/******/
/******/ 		// Return the exports of the module
/******/ 		return module.exports;
/******/ 	}
/******/
/******/ 	// This file contains only the entry chunk.
/******/ 	// The chunk loading function for additional chunks
/******/ 	__webpack_require__.e = function requireEnsure(chunkId) {
/******/ 		if(installedChunks[chunkId] === 0) {
/******/ 			return resolvedPromise;
/******/ 		}
/******/
/******/ 		// a Promise means "currently loading".
/******/ 		if(installedChunks[chunkId]) {
/******/ 			return installedChunks[chunkId][2];
/******/ 		}
/******/
/******/ 		// setup Promise in chunk cache
/******/ 		var promise = new Promise(function(resolve, reject) {
/******/ 			installedChunks[chunkId] = [resolve, reject];
/******/ 		});
/******/ 		installedChunks[chunkId][2] = promise;
/******/
/******/ 		// start chunk loading
/******/ 		var head = document.getElementsByTagName('head')[0];
/******/ 		var script = document.createElement('script');
/******/ 		script.type = 'text/javascript';
/******/ 		script.charset = 'utf-8';
/******/ 		script.async = true;
/******/ 		script.timeout = 120000;
/******/
/******/ 		if (__webpack_require__.nc) {
/******/ 			script.setAttribute("nonce", __webpack_require__.nc);
/******/ 		}
/******/ 		script.src = __webpack_require__.p + "" + chunkId + ".output.js";
/******/ 		var timeout = setTimeout(onScriptComplete, 120000);
/******/ 		script.onerror = script.onload = onScriptComplete;
/******/ 		function onScriptComplete() {
/******/ 			// avoid mem leaks in IE.
/******/ 			script.onerror = script.onload = null;
/******/ 			clearTimeout(timeout);
/******/ 			var chunk = installedChunks[chunkId];
/******/ 			if(chunk !== 0) {
/******/ 				if(chunk) {
/******/ 					chunk[1](new Error('Loading chunk ' + chunkId + ' failed.'));
/******/ 				}
/******/ 				installedChunks[chunkId] = undefined;
/******/ 			}
/******/ 		};
/******/ 		head.appendChild(script);
/******/
/******/ 		return promise;
/******/ 	};
/******/
/******/ 	// expose the modules object (__webpack_modules__)
/******/ 	__webpack_require__.m = modules;
/******/
/******/ 	// expose the module cache
/******/ 	__webpack_require__.c = installedModules;
/******/
/******/ 	// identity function for calling harmony imports with the correct context
/******/ 	__webpack_require__.i = function(value) { return value; };
/******/
/******/ 	// define getter function for harmony exports
/******/ 	__webpack_require__.d = function(exports, name, getter) {
/******/ 		if(!__webpack_require__.o(exports, name)) {
/******/ 			Object.defineProperty(exports, name, {
/******/ 				configurable: false,
/******/ 				enumerable: true,
/******/ 				get: getter
/******/ 			});
/******/ 		}
/******/ 	};
/******/
/******/ 	// getDefaultExport function for compatibility with non-harmony modules
/******/ 	__webpack_require__.n = function(module) {
/******/ 		var getter = module && module.__esModule ?
/******/ 			function getDefault() { return module['default']; } :
/******/ 			function getModuleExports() { return module; };
/******/ 		__webpack_require__.d(getter, 'a', getter);
/******/ 		return getter;
/******/ 	};
/******/
/******/ 	// Object.prototype.hasOwnProperty.call
/******/ 	__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
/******/
/******/ 	// __webpack_public_path__
/******/ 	__webpack_require__.p = "js/";
/******/
/******/ 	// on error function for async loading
/******/ 	__webpack_require__.oe = function(err) { console.error(err); throw err; };
/******/
/******/ 	// Load entry module and return exports
/******/ 	return __webpack_require__(__webpack_require__.s = 1);
/******/ })
/************************************************************************/

/******/ ([
/* 0 */
/* unknown exports provided */
/* all exports used */
/*!*******************************************!*\
  !*** (webpack)/~/bundle-loader!./file.js ***!
  \*******************************************/
/***/ (function(module, exports, __webpack_require__) {

var cbs = [], 
	data;
module.exports = function(cb) {
	if(cbs) cbs.push(cb);
	else cb(data);
}
__webpack_require__.e/* require.ensure */(0).then((function(require) {
	data = __webpack_require__(/*! !./file.js */ 2);
	var callbacks = cbs;
	cbs = null;
	for(var i = 0, l = callbacks.length; i < l; i++) {
		callbacks[i](data);
	}
}).bind(null, __webpack_require__)).catch(__webpack_require__.oe);

/***/ }),
/* 1 */
/* unknown exports provided */
/* all exports used */
/*!********************!*\
  !*** ./example.js ***!
  \********************/
/***/ (function(module, exports, __webpack_require__) {

__webpack_require__(/*! bundle-loader!./file.js */ 0)(function(fileJsExports) {
	console.log(fileJsExports);
});


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

js/0.output.js

webpackJsonp([0],{

/***/ 2:
/* unknown exports provided */
/* all exports used */
/*!*****************!*\
  !*** ./file.js ***!
  \*****************/
/***/ (function(module, exports) {

module.exports = "It works";

/***/ })

});

Info

Uncompressed

Hash: b569890a1f87dd375a1a
Version: webpack 2.6.0
      Asset       Size  Chunks             Chunk Names
0.output.js  230 bytes       0  [emitted]  
  output.js    6.86 kB       1  [emitted]  main
Entrypoint main = output.js
chunk    {0} 0.output.js 28 bytes {1} [rendered]
    > [0] (webpack)/~/bundle-loader!./file.js 7:0-14:2
    [2] ./file.js 28 bytes {0} [built]
        cjs require !!./file.js [0] (webpack)/~/bundle-loader!./file.js 8:8-30
chunk    {1} output.js (main) 378 bytes [entry] [rendered]
    > main [1] ./example.js 
    [0] (webpack)/~/bundle-loader!./file.js 281 bytes {1} [built]
        cjs require bundle-loader!./file.js [1] ./example.js 1:0-34
    [1] ./example.js 97 bytes {1} [built]

Minimized (uglify-js, no zip)

Hash: b569890a1f87dd375a1a
Version: webpack 2.6.0
      Asset      Size  Chunks             Chunk Names
0.output.js  58 bytes       0  [emitted]  
  output.js   1.58 kB       1  [emitted]  main
Entrypoint main = output.js
chunk    {0} 0.output.js 28 bytes {1} [rendered]
    > [0] (webpack)/~/bundle-loader!./file.js 7:0-14:2
    [2] ./file.js 28 bytes {0} [built]
        cjs require !!./file.js [0] (webpack)/~/bundle-loader!./file.js 8:8-30
chunk    {1} output.js (main) 378 bytes [entry] [rendered]
    > main [1] ./example.js 
    [0] (webpack)/~/bundle-loader!./file.js 281 bytes {1} [built]
        cjs require bundle-loader!./file.js [1] ./example.js 1:0-34
    [1] ./example.js 97 bytes {1} [built]