13 KiB
13 KiB
This example shows automatically created async commons chunks.
The example entry references two chunks:
- entry chunk
- async require -> chunk X
- async require -> chunk Y
- chunk X
- module
a - module
b - module
c
- module
- chunk Y
- module
a - module
b - module
d
- module
These chunks share modules a and b. The optimization extract these into chunk Z:
Note: Actually the optimization compare size of chunk Z to some minimum value, but this is disabled from this example. In practice there is no configuration needed for this.
- entry chunk
- async require -> chunk X & Z
- async require -> chunk Y & Z
- chunk X
- module
c
- module
- chunk Y
- module
d
- module
- chunk Z
- module
a - module
b
- module
Pretty useful for a router in a SPA.
example.js
// a chunks with a, b, c
require(["./a", "./b", "./c"]);
// a chunk with a, b, d
require.ensure(["./a"], function(require) {
require("./b");
require("./d");
});
dist/output.js
/******/ (function(modules) { /* webpackBootstrap */ })
/******/ (function(modules) { // webpackBootstrap
/******/ // install a JSONP callback for chunk loading
/******/ function webpackJsonpCallback(data) {
/******/ var chunkIds = data[0];
/******/ var moreModules = data[1];
/******/
/******/
/******/ // add "moreModules" to the modules object,
/******/ // then flag all "chunkIds" as loaded and fire callback
/******/ var moduleId, chunkId, i = 0, resolves = [];
/******/ 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(data);
/******/
/******/ while(resolves.length) {
/******/ resolves.shift()();
/******/ }
/******/
/******/ };
/******/
/******/
/******/ // The module cache
/******/ var installedModules = {};
/******/
/******/ // object to store loaded and loading chunks
/******/ // undefined = chunk not loaded, null = chunk preloaded/prefetched
/******/ // Promise = chunk loading, 0 = chunk loaded
/******/ var installedChunks = {
/******/ 1: 0
/******/ };
/******/
/******/
/******/
/******/ // script path function
/******/ function jsonpScriptSrc(chunkId) {
/******/ return __webpack_require__.p + "" + chunkId + ".output.js"
/******/ }
/******/
/******/ // 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) {
/******/ var promises = [];
/******/
/******/
/******/ // JSONP chunk loading for javascript
/******/
/******/ var installedChunkData = installedChunks[chunkId];
/******/ if(installedChunkData !== 0) { // 0 means "already installed".
/******/
/******/ // a Promise means "currently loading".
/******/ if(installedChunkData) {
/******/ promises.push(installedChunkData[2]);
/******/ } else {
/******/ // setup Promise in chunk cache
/******/ var promise = new Promise(function(resolve, reject) {
/******/ installedChunkData = installedChunks[chunkId] = [resolve, reject];
/******/ });
/******/ promises.push(installedChunkData[2] = promise);
/******/
/******/ // start chunk loading
/******/ var script = document.createElement('script');
/******/ var onScriptComplete;
/******/
/******/ script.charset = 'utf-8';
/******/ script.timeout = 120;
/******/ if (__webpack_require__.nc) {
/******/ script.setAttribute("nonce", __webpack_require__.nc);
/******/ }
/******/ script.src = jsonpScriptSrc(chunkId);
/******/
/******/ onScriptComplete = function (event) {
/******/ // avoid mem leaks in IE.
/******/ script.onerror = script.onload = null;
/******/ clearTimeout(timeout);
/******/ var chunk = installedChunks[chunkId];
/******/ if(chunk !== 0) {
/******/ if(chunk) {
/******/ var errorType = event && (event.type === 'load' ? 'missing' : event.type);
/******/ var realSrc = event && event.target && event.target.src;
/******/ var error = new Error('Loading chunk ' + chunkId + ' failed.\n(' + errorType + ': ' + realSrc + ')');
/******/ error.type = errorType;
/******/ error.request = realSrc;
/******/ chunk[1](error);
/******/ }
/******/ installedChunks[chunkId] = undefined;
/******/ }
/******/ };
/******/ var timeout = setTimeout(function(){
/******/ onScriptComplete({ type: 'timeout', target: script });
/******/ }, 120000);
/******/ script.onerror = script.onload = onScriptComplete;
/******/ document.head.appendChild(script);
/******/ }
/******/ }
/******/ return Promise.all(promises);
/******/ };
/******/
/******/ // expose the modules object (__webpack_modules__)
/******/ __webpack_require__.m = modules;
/******/
/******/ // expose the module cache
/******/ __webpack_require__.c = installedModules;
/******/
/******/ // define getter function for harmony exports
/******/ __webpack_require__.d = function(exports, name, getter) {
/******/ if(!__webpack_require__.o(exports, name)) {
/******/ Object.defineProperty(exports, name, { enumerable: true, get: getter });
/******/ }
/******/ };
/******/
/******/ // define __esModule on exports
/******/ __webpack_require__.r = function(exports) {
/******/ if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
/******/ Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
/******/ }
/******/ Object.defineProperty(exports, '__esModule', { value: true });
/******/ };
/******/
/******/ // create a fake namespace object
/******/ // mode & 1: value is a module id, require it
/******/ // mode & 2: merge all properties of value into the ns
/******/ // mode & 4: return value when already ns object
/******/ // mode & 8|1: behave like require
/******/ __webpack_require__.t = function(value, mode) {
/******/ if(mode & 1) value = __webpack_require__(value);
/******/ if(mode & 8) return value;
/******/ if((mode & 4) && typeof value === 'object' && value && value.__esModule) return value;
/******/ var ns = Object.create(null);
/******/ __webpack_require__.r(ns);
/******/ Object.defineProperty(ns, 'default', { enumerable: true, value: value });
/******/ if(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));
/******/ return ns;
/******/ };
/******/
/******/ // 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 = "dist/";
/******/
/******/ // on error function for async loading
/******/ __webpack_require__.oe = function(err) { console.error(err); throw err; };
/******/
/******/ var jsonpArray = window["webpackJsonp"] = window["webpackJsonp"] || [];
/******/ var oldJsonpFunction = jsonpArray.push.bind(jsonpArray);
/******/ jsonpArray.push = webpackJsonpCallback;
/******/ jsonpArray = jsonpArray.slice();
/******/ for(var i = 0; i < jsonpArray.length; i++) webpackJsonpCallback(jsonpArray[i]);
/******/ var parentJsonpFunction = oldJsonpFunction;
/******/
/******/
/******/ // Load entry module and return exports
/******/ return __webpack_require__(__webpack_require__.s = 2);
/******/ })
/************************************************************************/
/******/ ({
/***/ 2:
/*!********************!*\
!*** ./example.js ***!
\********************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
// a chunks with a, b, c
Promise.all(/*! AMD require */[__webpack_require__.e(0), __webpack_require__.e(2)]).then(function() {[__webpack_require__(/*! ./a */ 0), __webpack_require__(/*! ./b */ 1), __webpack_require__(/*! ./c */ 3)];}).catch(__webpack_require__.oe);
// a chunk with a, b, d
Promise.all(/*! require.ensure */[__webpack_require__.e(0), __webpack_require__.e(3)]).then((function(require) {
__webpack_require__(/*! ./b */ 1);
__webpack_require__(/*! ./d */ 4);
}).bind(null, __webpack_require__)).catch(__webpack_require__.oe);
/***/ })
/******/ });
dist/0.output.js
(window["webpackJsonp"] = window["webpackJsonp"] || []).push([[0],[
/* 0 */
/*!**************!*\
!*** ./a.js ***!
\**************/
/*! no static exports found */
/***/ (function(module, exports) {
module.exports = "a";
/***/ }),
/* 1 */
/*!**************!*\
!*** ./b.js ***!
\**************/
/*! no static exports found */
/***/ (function(module, exports) {
module.exports = "b";
/***/ })
]]);
dist/2.output.js
(window["webpackJsonp"] = window["webpackJsonp"] || []).push([[2],{
/***/ 3:
/*!**************!*\
!*** ./c.js ***!
\**************/
/*! no static exports found */
/***/ (function(module, exports) {
module.exports = "c";
/***/ })
}]);
dist/3.output.js
(window["webpackJsonp"] = window["webpackJsonp"] || []).push([[3],{
/***/ 4:
/*!**************!*\
!*** ./d.js ***!
\**************/
/*! no static exports found */
/***/ (function(module, exports) {
module.exports = "d";
/***/ })
}]);
Info
Unoptimized
Hash: 0a1b2c3d4e5f6a7b8c9d
Version: webpack 4.29.6
Asset Size Chunks Chunk Names
0.output.js 405 bytes 0 [emitted]
2.output.js 241 bytes 2 [emitted]
3.output.js 241 bytes 3 [emitted]
output.js 8.54 KiB 1 [emitted] main
Entrypoint main = output.js
chunk {0} 0.output.js 42 bytes <{1}> ={2}= ={3}= [rendered] split chunk (cache group: default)
> ./a ./b ./c [2] ./example.js 2:0-30
> [2] ./example.js 5:0-8:2
[0] ./a.js 21 bytes {0} [built]
amd require ./a [2] ./example.js 2:0-30
require.ensure item ./a [2] ./example.js 5:0-8:2
[1] ./b.js 21 bytes {0} [built]
amd require ./b [2] ./example.js 2:0-30
cjs require ./b [2] ./example.js 6:1-15
chunk {1} output.js (main) 164 bytes >{0}< >{2}< >{3}< [entry] [rendered]
> ./example.js main
[2] ./example.js 164 bytes {1} [built]
single entry ./example.js main
chunk {2} 2.output.js 21 bytes <{1}> ={0}= [rendered]
> ./a ./b ./c [2] ./example.js 2:0-30
[3] ./c.js 21 bytes {2} [built]
amd require ./c [2] ./example.js 2:0-30
chunk {3} 3.output.js 21 bytes <{1}> ={0}= [rendered]
> [2] ./example.js 5:0-8:2
[4] ./d.js 21 bytes {3} [built]
cjs require ./d [2] ./example.js 7:1-15
Production mode
Hash: 0a1b2c3d4e5f6a7b8c9d
Version: webpack 4.29.6
Asset Size Chunks Chunk Names
0.output.js 118 bytes 0 [emitted]
2.output.js 91 bytes 2 [emitted]
3.output.js 91 bytes 3 [emitted]
output.js 2.1 KiB 1 [emitted] main
Entrypoint main = output.js
chunk {0} 0.output.js 42 bytes <{1}> ={2}= ={3}= [rendered] split chunk (cache group: default)
> ./a ./b ./c [2] ./example.js 2:0-30
> [2] ./example.js 5:0-8:2
[0] ./a.js 21 bytes {0} [built]
amd require ./a [2] ./example.js 2:0-30
require.ensure item ./a [2] ./example.js 5:0-8:2
[1] ./b.js 21 bytes {0} [built]
amd require ./b [2] ./example.js 2:0-30
cjs require ./b [2] ./example.js 6:1-15
chunk {1} output.js (main) 164 bytes >{0}< >{2}< >{3}< [entry] [rendered]
> ./example.js main
[2] ./example.js 164 bytes {1} [built]
single entry ./example.js main
chunk {2} 2.output.js 21 bytes <{1}> ={0}= [rendered]
> ./a ./b ./c [2] ./example.js 2:0-30
[3] ./c.js 21 bytes {2} [built]
amd require ./c [2] ./example.js 2:0-30
chunk {3} 3.output.js 21 bytes <{1}> ={0}= [rendered]
> [2] ./example.js 5:0-8:2
[4] ./d.js 21 bytes {3} [built]
cjs require ./d [2] ./example.js 7:1-15