13 KiB
13 KiB
This example shows the 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: The optimization compares the 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
/******/ (() => { // webpackBootstrap
/******/ var __webpack_modules__ = ({});
/* webpack runtime code */
/************************************************************************/
/******/ // The module cache
/******/ var __webpack_module_cache__ = {};
/******/
/******/ // The require function
/******/ function __webpack_require__(moduleId) {
/******/ // Check if module is in cache
/******/ if(__webpack_module_cache__[moduleId]) {
/******/ return __webpack_module_cache__[moduleId].exports;
/******/ }
/******/ // Create a new module (and put it into the cache)
/******/ var module = __webpack_module_cache__[moduleId] = {
/******/ i: moduleId,
/******/ l: false,
/******/ exports: {}
/******/ };
/******/
/******/ // Execute the module function
/******/ __webpack_modules__[moduleId](module, module.exports, __webpack_require__);
/******/
/******/ // Flag the module as loaded
/******/ module.l = true;
/******/
/******/ // Return the exports of the module
/******/ return module.exports;
/******/ }
/******/
/******/ // expose the modules object (__webpack_modules__)
/******/ __webpack_require__.m = __webpack_modules__;
/******/
/************************************************************************/
/******/ /* webpack/runtime/ensure chunk */
/******/ !function() {
/******/ __webpack_require__.f = {};
/******/ // This file contains only the entry chunk.
/******/ // The chunk loading function for additional chunks
/******/ __webpack_require__.e = (chunkId) => {
/******/ return Promise.all(Object.keys(__webpack_require__.f).reduce((promises, key) => {
/******/ __webpack_require__.f[key](chunkId, promises);
/******/ return promises;
/******/ }, []));
/******/ };
/******/ }();
/******/
/******/ /* webpack/runtime/get javascript chunk filename */
/******/ !function() {
/******/ // This function allow to reference async chunks
/******/ __webpack_require__.u = (chunkId) => {
/******/ // return url for filenames based on template
/******/ return "" + chunkId + ".output.js";
/******/ };
/******/ }();
/******/
/******/ /* webpack/runtime/publicPath */
/******/ !function() {
/******/ __webpack_require__.p = "dist/";
/******/ }();
/******/
/******/ /* webpack/runtime/jsonp chunk loading */
/******/ !function() {
/******/
/******/
/******/ // object to store loaded and loading chunks
/******/ // undefined = chunk not loaded, null = chunk preloaded/prefetched
/******/ // Promise = chunk loading, 0 = chunk loaded
/******/ var installedChunks = {
/******/ 179: 0
/******/ };
/******/
/******/
/******/
/******/
/******/ __webpack_require__.f.j = (chunkId, promises) => {
/******/ // JSONP chunk loading for javascript
/******/ var installedChunkData = Object.prototype.hasOwnProperty.call(installedChunks, chunkId) ? installedChunks[chunkId] : undefined;
/******/ if(installedChunkData !== 0) { // 0 means "already installed".
/******/
/******/ // a Promise means "currently loading".
/******/ if(installedChunkData) {
/******/ promises.push(installedChunkData[2]);
/******/ } else {
/******/ if(true) { // all chunks have JS
/******/ // setup Promise in chunk cache
/******/ var promise = new Promise((resolve, reject) => {
/******/ installedChunkData = installedChunks[chunkId] = [resolve, reject];
/******/ });
/******/ promises.push(installedChunkData[2] = promise);
/******/
/******/ // start chunk loading
/******/ var url = __webpack_require__.p + __webpack_require__.u(chunkId);
/******/ var loadingEnded = () => {
/******/ if(Object.prototype.hasOwnProperty.call(installedChunks, chunkId)) {
/******/ installedChunkData = installedChunks[chunkId];
/******/ if(installedChunkData !== 0) installedChunks[chunkId] = undefined;
/******/ if(installedChunkData) return installedChunkData[1];
/******/ }
/******/ };
/******/ 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 = url;
/******/
/******/ // create error before stack unwound to get useful stacktrace later
/******/ var error = new Error();
/******/ onScriptComplete = function (event) {
/******/ onScriptComplete = function() {};
/******/ // avoid mem leaks in IE.
/******/ script.onerror = script.onload = null;
/******/ clearTimeout(timeout);
/******/ var reportError = loadingEnded();
/******/ if(reportError) {
/******/ var errorType = event && (event.type === 'load' ? 'missing' : event.type);
/******/ var realSrc = event && event.target && event.target.src;
/******/ error.message = 'Loading chunk ' + chunkId + ' failed.\n(' + errorType + ': ' + realSrc + ')';
/******/ error.name = 'ChunkLoadError';
/******/ error.type = errorType;
/******/ error.request = realSrc;
/******/ reportError(error);
/******/ }
/******/ };
/******/ var timeout = setTimeout(function(){
/******/ onScriptComplete({ type: 'timeout', target: script });
/******/ }, 120000);
/******/ script.onerror = script.onload = onScriptComplete;
/******/ document.head.appendChild(script);
/******/ } else installedChunks[chunkId] = 0;
/******/
/******/ // no HMR
/******/ }
/******/ }
/******/
/******/ // no chunk preloading needed
/******/ };
/******/
/******/ // no prefetching
/******/
/******/ // no HMR
/******/
/******/ // no HMR manifest
/******/
/******/ // no deferred startup or startup prefetching
/******/
/******/ // install a JSONP callback for chunk loading
/******/ function webpackJsonpCallback(data) {
/******/ var chunkIds = data[0];
/******/ var moreModules = data[1];
/******/
/******/ var runtime = data[3];
/******/
/******/ // 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(Object.prototype.hasOwnProperty.call(installedChunks, chunkId) && installedChunks[chunkId]) {
/******/ resolves.push(installedChunks[chunkId][0]);
/******/ }
/******/ installedChunks[chunkId] = 0;
/******/ }
/******/ for(moduleId in moreModules) {
/******/ if(Object.prototype.hasOwnProperty.call(moreModules, moduleId)) {
/******/ __webpack_require__.m[moduleId] = moreModules[moduleId];
/******/ }
/******/ }
/******/ if(runtime) runtime(__webpack_require__);
/******/ if(parentJsonpFunction) parentJsonpFunction(data);
/******/
/******/ while(resolves.length) {
/******/ resolves.shift()();
/******/ }
/******/
/******/ };
/******/
/******/ var jsonpArray = window["webpackJsonp"] = window["webpackJsonp"] || [];
/******/ var oldJsonpFunction = jsonpArray.push.bind(jsonpArray);
/******/ jsonpArray.push = webpackJsonpCallback;
/******/
/******/ var parentJsonpFunction = oldJsonpFunction;
/******/ }();
/******/
/************************************************************************/
/*!********************!*\
!*** ./example.js ***!
\********************/
/*! exports [maybe provided (runtime-defined)] [no usage info] */
/*! runtime requirements: __webpack_require__, __webpack_require__.e, __webpack_require__.oe, __webpack_require__.* */
// a chunks with a, b, c
Promise.all(/*! AMD require */[__webpack_require__.e(394), __webpack_require__.e(460)]).then(function() {[__webpack_require__(/*! ./a */ 1), __webpack_require__(/*! ./b */ 2), __webpack_require__(/*! ./c */ 3)];}).catch(__webpack_require__.oe);
// a chunk with a, b, d
Promise.all(/*! require.ensure */[__webpack_require__.e(394), __webpack_require__.e(767)]).then((function(require) {
__webpack_require__(/*! ./b */ 2);
__webpack_require__(/*! ./d */ 4);
}).bind(null, __webpack_require__)).catch(__webpack_require__.oe);
/******/ })()
;
dist/394.output.js
(window["webpackJsonp"] = window["webpackJsonp"] || []).push([[394],[
/* 0 */,
/* 1 */
/*!**************!*\
!*** ./a.js ***!
\**************/
/*! exports [maybe provided (runtime-defined)] [no usage info] */
/*! runtime requirements: module */
/***/ ((module) => {
module.exports = "a";
/***/ }),
/* 2 */
/*!**************!*\
!*** ./b.js ***!
\**************/
/*! exports [maybe provided (runtime-defined)] [no usage info] */
/*! runtime requirements: module */
/***/ ((module) => {
module.exports = "b";
/***/ })
]]);
dist/460.output.js
(window["webpackJsonp"] = window["webpackJsonp"] || []).push([[460],{
/***/ 3:
/*!**************!*\
!*** ./c.js ***!
\**************/
/*! exports [maybe provided (runtime-defined)] [no usage info] */
/*! runtime requirements: module */
/***/ ((module) => {
module.exports = "c";
/***/ })
}]);
dist/767.output.js
(window["webpackJsonp"] = window["webpackJsonp"] || []).push([[767],{
/***/ 4:
/*!**************!*\
!*** ./d.js ***!
\**************/
/*! exports [maybe provided (runtime-defined)] [no usage info] */
/*! runtime requirements: module */
/***/ ((module) => {
module.exports = "d";
/***/ })
}]);
Info
Unoptimized
Hash: 0a1b2c3d4e5f6a7b8c9d
Version: webpack 5.0.0-beta.6
Asset Size
394.output.js 530 bytes [emitted]
460.output.js 300 bytes [emitted]
767.output.js 300 bytes [emitted]
output.js 8.2 KiB [emitted] [name: main]
Entrypoint main = output.js
chunk output.js (main) 164 bytes (javascript) 4.23 KiB (runtime) [entry] [rendered]
> ./example.js main
./example.js 164 bytes [built]
[used exports unknown]
entry ./example.js main
+ 4 hidden chunk modules
chunk 394.output.js 42 bytes [rendered] split chunk (cache group: default)
> ./a ./b ./c ./example.js 2:0-30
> ./example.js 5:0-8:2
./a.js 21 bytes [built]
[used exports unknown]
amd require ./a ./example.js 2:0-30
require.ensure item ./a ./example.js 5:0-8:2
./b.js 21 bytes [built]
[used exports unknown]
amd require ./b ./example.js 2:0-30
cjs require ./b ./example.js 6:1-15
chunk 460.output.js 21 bytes [rendered]
> ./a ./b ./c ./example.js 2:0-30
./c.js 21 bytes [built]
[used exports unknown]
amd require ./c ./example.js 2:0-30
chunk 767.output.js 21 bytes [rendered]
> ./example.js 5:0-8:2
./d.js 21 bytes [built]
[used exports unknown]
cjs require ./d ./example.js 7:1-15
Production mode
Hash: 0a1b2c3d4e5f6a7b8c9d
Version: webpack 5.0.0-beta.6
Asset Size
394.output.js 108 bytes [emitted]
460.output.js 85 bytes [emitted]
767.output.js 85 bytes [emitted]
output.js 1.56 KiB [emitted] [name: main]
Entrypoint main = output.js
chunk output.js (main) 164 bytes (javascript) 4.23 KiB (runtime) [entry] [rendered]
> ./example.js main
./example.js 164 bytes [built]
[no exports used]
entry ./example.js main
+ 4 hidden chunk modules
chunk 394.output.js 42 bytes [rendered] split chunk (cache group: default)
> ./a ./b ./c ./example.js 2:0-30
> ./example.js 5:0-8:2
./a.js 21 bytes [built]
amd require ./a ./example.js 2:0-30
require.ensure item ./a ./example.js 5:0-8:2
./b.js 21 bytes [built]
amd require ./b ./example.js 2:0-30
cjs require ./b ./example.js 6:1-15
chunk 460.output.js 21 bytes [rendered]
> ./a ./b ./c ./example.js 2:0-30
./c.js 21 bytes [built]
amd require ./c ./example.js 2:0-30
chunk 767.output.js 21 bytes [rendered]
> ./example.js 5:0-8:2
./d.js 21 bytes [built]
cjs require ./d ./example.js 7:1-15