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!./file.js")(function(fileJsExports) { console.log(fileJsExports); });
file.js
module.exports = "It works";
js/output.js
/******/ (function(modules) { // webpackBootstrap /******/ // install a JSONP callback for chunk loading /******/ var parentJsonpFunction = window["webpackJsonp"]; /******/ window["webpackJsonp"] = function webpackJsonpCallback(chunkIds, moreModules) { /******/ // add "moreModules" to the modules object, /******/ // then flag all "chunkIds" as loaded and fire callback /******/ var moduleId, chunkId, i = 0, callbacks = []; /******/ for(;i < chunkIds.length; i++) { /******/ chunkId = chunkIds[i]; /******/ if(installedChunks[chunkId]) /******/ callbacks.push.apply(callbacks, installedChunks[chunkId]); /******/ installedChunks[chunkId] = 0; /******/ } /******/ for(moduleId in moreModules) { /******/ modules[moduleId] = moreModules[moduleId]; /******/ } /******/ if(parentJsonpFunction) parentJsonpFunction(chunkIds, moreModules); /******/ while(callbacks.length) /******/ callbacks.shift().call(null, __webpack_require__); /******/ }; /******/ // The module cache /******/ var installedModules = {}; /******/ // object to store loaded and loading chunks /******/ // "0" means "already loaded" /******/ // Array means "loading", array contains callbacks /******/ var installedChunks = { /******/ 0:0 /******/ }; /******/ // 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] = { /******/ exports: {}, /******/ id: moduleId, /******/ loaded: false /******/ }; /******/ // Execute the module function /******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__); /******/ // Flag the module as loaded /******/ module.loaded = 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, callback) { /******/ // "0" is the signal for "already loaded" /******/ if(installedChunks[chunkId] === 0) /******/ return callback.call(null, __webpack_require__); /******/ // an array means "currently loading". /******/ if(installedChunks[chunkId] !== undefined) { /******/ installedChunks[chunkId].push(callback); /******/ } else { /******/ // start chunk loading /******/ installedChunks[chunkId] = [callback]; /******/ var head = document.getElementsByTagName('head')[0]; /******/ var script = document.createElement('script'); /******/ script.type = 'text/javascript'; /******/ script.charset = 'utf-8'; /******/ script.async = true; /******/ script.src = __webpack_require__.p + "" + chunkId + ".output.js"; /******/ head.appendChild(script); /******/ } /******/ }; /******/ // expose the modules object (__webpack_modules__) /******/ __webpack_require__.m = modules; /******/ // expose the module cache /******/ __webpack_require__.c = installedModules; /******/ // __webpack_public_path__ /******/ __webpack_require__.p = "js/"; /******/ // Load entry module and return exports /******/ return __webpack_require__(0); /******/ }) /************************************************************************/ /******/ ([ /* 0 */ /*!********************!*\ !*** ./example.js ***! \********************/ /***/ function(module, exports, __webpack_require__) { __webpack_require__(/*! bundle!./file.js */ 1)(function(fileJsExports) { console.log(fileJsExports); }); /***/ }, /* 1 */ /*!*******************************************!*\ !*** (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/* nsure */(1, 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); } }); /***/ } /******/ ]);
js/1.output.js
webpackJsonp([1],{ /***/ 2: /*!*****************!*\ !*** ./file.js ***! \*****************/ /***/ function(module, exports) { module.exports = "It works"; /***/ } });
Info
Uncompressed
Hash: 401ee5c665e77176fd3f
Version: webpack 1.9.10
Time: 102ms
Asset Size Chunks Chunk Names
output.js 4.3 kB 0 [emitted] main
1.output.js 175 bytes 1 [emitted]
chunk {0} output.js (main) 369 bytes [rendered]
> main [0] ./example.js
[0] ./example.js 88 bytes {0} [built]
[1] (webpack)/~/bundle-loader!./file.js 281 bytes {0} [built]
cjs require bundle!./file.js [0] ./example.js 1:0-27
chunk {1} 1.output.js 28 bytes {0} [rendered]
> [1] (webpack)/~/bundle-loader!./file.js 7:0-14:2
[2] ./file.js 28 bytes {1} [built]
cjs require !!./file.js [1] (webpack)/~/bundle-loader!./file.js 8:8-30
Minimized (uglify-js, no zip)
Hash: 05b29e396109d10b7d34
Version: webpack 1.9.10
Time: 235ms
Asset Size Chunks Chunk Names
output.js 899 bytes 0 [emitted] main
1.output.js 57 bytes 1 [emitted]
chunk {0} output.js (main) 369 bytes [rendered]
> main [0] ./example.js
[0] ./example.js 88 bytes {0} [built]
[2] (webpack)/~/bundle-loader!./file.js 281 bytes {0} [built]
cjs require bundle!./file.js [0] ./example.js 1:0-27
chunk {1} 1.output.js 28 bytes {0} [rendered]
> [2] (webpack)/~/bundle-loader!./file.js 7:0-14:2
[1] ./file.js 28 bytes {1} [built]
cjs require !!./file.js [2] (webpack)/~/bundle-loader!./file.js 8:8-30