History

Tobias Koppers 18ae73dad4 Refactor chunk graph Chunks are now always in ChunkGroups ChunkGroups have parents and children, Chunks no longer have this AsyncDependenciesBlocks point to a ChunkGroup instead of a list of chunks Entrypoint is now a ChunkGroup (extends from it) move stuff graph modification methods into GraphHelpers Change chunk id recording to source-based Chunks have parents, siblings and children in Stats rename AutomaticCommonsChunksPlugin to SplitChunksPlugin add request property to origin (ChunkGroup) remove moveToParent from AggressiveMergingPlugin fix issues with AggressiveSplittingPlugin remove CommonsChunkPlugin add optimization.runtimeChunk (RuntimeChunkPlugin) fix a filename bug for initial chunks remove extract-text-webpack-plugin from test suite add DebugHash to help debugging hash issues fix issues with entry modules in different chunk as runtime redo optimization.splitChunks options Compilation.entrypoints is now a Map Compilation.chunkGroups has been added remove some unittests update examples update tests with CommonsChunkPlugin		2018-01-19 19:21:30 +01:00
..
templates	only use ES6 modules in example	2016-12-14 12:24:18 +01:00
README.md	Refactor chunk graph	2018-01-19 19:21:30 +01:00
build.js	feat(examples): add example for context modules + code split via import()	2016-12-09 22:58:29 -06:00
example.js	only use ES6 modules in example	2016-12-14 12:24:18 +01:00
template.md	change output from examples for js/ to dist/	2018-01-04 21:39:29 +01:00
webpack.config.js	update example configurations for latest mode changes	2017-12-14 10:53:04 +01:00

README.md

example.js

This example illustrates how to leverage the import() syntax to create ContextModules which are separated into separate chunks for each module in the ./templates folder.

async function getTemplate(templateName) {
	try {
		let template = await import(`./templates/${templateName}`);
		console.log(template);
	} catch(err) {
		console.error("template error");
		return new Error(err);
	}
}

getTemplate("foo");
getTemplate("bar");
getTemplate("baz");

templates/

foo.js
baz.js
bar.js

All templates are of this pattern:

var foo = "foo";

export default foo;

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
/******/ 	var installedChunks = {
/******/ 		3: 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] = {
/******/ 			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 head = document.getElementsByTagName('head')[0];
/******/ 				var script = document.createElement('script');
/******/
/******/ 				script.charset = 'utf-8';
/******/ 				script.timeout = 120000;
/******/
/******/ 				if (__webpack_require__.nc) {
/******/ 					script.setAttribute("nonce", __webpack_require__.nc);
/******/ 				}
/******/ 				script.src = __webpack_require__.p + "" + chunkId + ".output.js";
/******/ 				var timeout = setTimeout(function(){
/******/ 					onScriptComplete({ type: 'timeout', target: script });
/******/ 				}, 120000);
/******/ 				script.onerror = script.onload = onScriptComplete;
/******/ 				function onScriptComplete(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;
/******/ 					}
/******/ 				};
/******/ 				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, {
/******/ 				configurable: false,
/******/ 				enumerable: true,
/******/ 				get: getter
/******/ 			});
/******/ 		}
/******/ 	};
/******/
/******/ 	// define __esModule on exports
/******/ 	__webpack_require__.r = function(exports) {
/******/ 		Object.defineProperty(exports, '__esModule', { value: true });
/******/ 	};
/******/
/******/ 	// 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 = 4);
/******/ })
/************************************************************************/

/******/ ([
/* 0 */,
/* 1 */,
/* 2 */,
/* 3 */
/*!**************************************************!*\
  !*** ./templates lazy ^\.\/.*$ namespace object ***!
  \**************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

var map = {
	"./bar": [
		2,
		2
	],
	"./bar.js": [
		2,
		2
	],
	"./baz": [
		1,
		1
	],
	"./baz.js": [
		1,
		1
	],
	"./foo": [
		0,
		0
	],
	"./foo.js": [
		0,
		0
	]
};
function webpackAsyncContext(req) {
	var ids = map[req];
	if(!ids) {
		return Promise.resolve().then(function() {
			var e = new Error('Cannot find module "' + req + '".');
			e.code = 'MODULE_NOT_FOUND';
			throw e;
		});
	}
	return __webpack_require__.e(ids[1]).then(function() {
		var module = __webpack_require__(ids[0]);
		return module;
	});
}
webpackAsyncContext.keys = function webpackAsyncContextKeys() {
	return Object.keys(map);
};
webpackAsyncContext.id = 3;
module.exports = webpackAsyncContext;

/***/ }),
/* 4 */
/*!********************!*\
  !*** ./example.js ***!
  \********************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {

async function getTemplate(templateName) {
	try {
		let template = await __webpack_require__(3)(`./${templateName}`);
		console.log(template);
	} catch(err) {
		console.error("template error");
		return new Error(err);
	}
}

getTemplate("foo");
getTemplate("bar");
getTemplate("baz");




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

Info

Unoptimized

Hash: 0a1b2c3d4e5f6a7b8c9d
Version: webpack next
      Asset       Size  Chunks             Chunk Names
0.output.js  436 bytes       0  [emitted]  
1.output.js  445 bytes       1  [emitted]  
2.output.js  439 bytes       2  [emitted]  
  output.js   8.03 KiB       3  [emitted]  main
Entrypoint main = output.js
chunk    {0} 0.output.js 41 bytes <{3}> [rendered]
    > ./foo [3] ./templates lazy ^\.\/.*$ namespace object ./foo
    > ./foo.js [3] ./templates lazy ^\.\/.*$ namespace object ./foo.js
    [0] ./templates/foo.js 41 bytes {0} [optional] [built]
        [exports: default]
        context element ./foo.js [3] ./templates lazy ^\.\/.*$ namespace object ./foo.js
        context element ./foo [3] ./templates lazy ^\.\/.*$ namespace object ./foo
chunk    {1} 1.output.js 41 bytes <{3}> [rendered]
    > ./baz [3] ./templates lazy ^\.\/.*$ namespace object ./baz
    > ./baz.js [3] ./templates lazy ^\.\/.*$ namespace object ./baz.js
    [1] ./templates/baz.js 41 bytes {1} [optional] [built]
        [exports: default]
        context element ./baz.js [3] ./templates lazy ^\.\/.*$ namespace object ./baz.js
        context element ./baz [3] ./templates lazy ^\.\/.*$ namespace object ./baz
chunk    {2} 2.output.js 41 bytes <{3}> [rendered]
    > ./bar [3] ./templates lazy ^\.\/.*$ namespace object ./bar
    > ./bar.js [3] ./templates lazy ^\.\/.*$ namespace object ./bar.js
    [2] ./templates/bar.js 41 bytes {2} [optional] [built]
        [exports: default]
        context element ./bar.js [3] ./templates lazy ^\.\/.*$ namespace object ./bar.js
        context element ./bar [3] ./templates lazy ^\.\/.*$ namespace object ./bar
chunk    {3} output.js (main) 456 bytes >{0}< >{1}< >{2}< [entry] [rendered]
    > .\example.js main
    [3] ./templates lazy ^\.\/.*$ namespace object 160 bytes {3} [optional] [built]
        import() context lazy ./templates [4] ./example.js 3:23-60
    [4] ./example.js 296 bytes {3} [built]
        single entry .\example.js  main

Production mode

Hash: 0a1b2c3d4e5f6a7b8c9d
Version: webpack next
      Asset       Size  Chunks             Chunk Names
0.output.js  113 bytes       0  [emitted]  
1.output.js  114 bytes       1  [emitted]  
2.output.js  115 bytes       2  [emitted]  
  output.js    2.1 KiB       3  [emitted]  main
Entrypoint main = output.js
chunk    {0} 0.output.js 41 bytes <{3}> [rendered]
    > ./foo [3] ./templates lazy ^\.\/.*$ namespace object ./foo
    > ./foo.js [3] ./templates lazy ^\.\/.*$ namespace object ./foo.js
    [0] ./templates/foo.js 41 bytes {0} [optional] [built]
        [exports: default]
        context element ./foo.js [3] ./templates lazy ^\.\/.*$ namespace object ./foo.js
        context element ./foo [3] ./templates lazy ^\.\/.*$ namespace object ./foo
chunk    {1} 1.output.js 41 bytes <{3}> [rendered]
    > ./baz [3] ./templates lazy ^\.\/.*$ namespace object ./baz
    > ./baz.js [3] ./templates lazy ^\.\/.*$ namespace object ./baz.js
    [1] ./templates/baz.js 41 bytes {1} [optional] [built]
        [exports: default]
        context element ./baz.js [3] ./templates lazy ^\.\/.*$ namespace object ./baz.js
        context element ./baz [3] ./templates lazy ^\.\/.*$ namespace object ./baz
chunk    {2} 2.output.js 41 bytes <{3}> [rendered]
    > ./bar [3] ./templates lazy ^\.\/.*$ namespace object ./bar
    > ./bar.js [3] ./templates lazy ^\.\/.*$ namespace object ./bar.js
    [2] ./templates/bar.js 41 bytes {2} [optional] [built]
        [exports: default]
        context element ./bar.js [3] ./templates lazy ^\.\/.*$ namespace object ./bar.js
        context element ./bar [3] ./templates lazy ^\.\/.*$ namespace object ./bar
chunk    {3} output.js (main) 456 bytes >{0}< >{1}< >{2}< [entry] [rendered]
    > .\example.js main
    [3] ./templates lazy ^\.\/.*$ namespace object 160 bytes {3} [optional] [built]
        import() context lazy ./templates [4] ./example.js 3:23-60
    [4] ./example.js 296 bytes {3} [built]
        single entry .\example.js  main