mirror of https://github.com/webpack/webpack.git
376 lines
14 KiB
Markdown
376 lines
14 KiB
Markdown
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# example.js
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```javascript
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import { increment as inc } from './increment';
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var a = 1;
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inc(a); // 2
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// async loading
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import("./async-loaded").then(function(asyncLoaded) {
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console.log(asyncLoaded);
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});
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```
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# increment.js
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```javascript
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import { add } from './math';
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export function increment(val) {
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return add(val, 1);
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};
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```
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# dist/output.js
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```javascript
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/******/ (() => { // webpackBootstrap
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/******/ "use strict";
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/******/ var __webpack_modules__ = ([
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/* 0 */,
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/* 1 */
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/*!**********************!*\
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!*** ./increment.js ***!
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\**********************/
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/*! namespace exports */
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/*! export increment [provided] [no usage info] [missing usage info prevents renaming] */
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/*! other exports [not provided] [no usage info] */
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/*! runtime requirements: __webpack_require__, __webpack_require__.r, __webpack_exports__, __webpack_require__.d, __webpack_require__.* */
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/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {
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__webpack_require__.r(__webpack_exports__);
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/* harmony export */ __webpack_require__.d(__webpack_exports__, {
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/* harmony export */ increment: () => (/* binding */ increment)
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/* harmony export */ });
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/* harmony import */ var _math__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./math */ 2);
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function increment(val) {
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return (0,_math__WEBPACK_IMPORTED_MODULE_0__.add)(val, 1);
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};
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/***/ }),
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/* 2 */
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/*!*****************!*\
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!*** ./math.js ***!
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\*****************/
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/*! namespace exports */
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/*! export add [provided] [no usage info] [missing usage info prevents renaming] */
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/*! other exports [not provided] [no usage info] */
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/*! runtime requirements: __webpack_require__.r, __webpack_exports__, __webpack_require__.d, __webpack_require__.* */
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/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {
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__webpack_require__.r(__webpack_exports__);
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/* harmony export */ __webpack_require__.d(__webpack_exports__, {
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/* harmony export */ add: () => (/* binding */ add)
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/* harmony export */ });
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function add() {
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var sum = 0, i = 0, args = arguments, l = args.length;
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while (i < l) {
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sum += args[i++];
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}
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return sum;
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}
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/***/ })
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/******/ ]);
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```
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<details><summary><code>/* webpack runtime code */</code></summary>
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``` js
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/************************************************************************/
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/******/ // The module cache
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/******/ var __webpack_module_cache__ = {};
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/******/
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/******/ // The require function
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/******/ function __webpack_require__(moduleId) {
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/******/ // Check if module is in cache
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/******/ var cachedModule = __webpack_module_cache__[moduleId];
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/******/ if (cachedModule !== undefined) {
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/******/ return cachedModule.exports;
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/******/ }
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/******/ // Create a new module (and put it into the cache)
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/******/ var module = __webpack_module_cache__[moduleId] = {
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/******/ // no module.id needed
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/******/ // no module.loaded needed
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/******/ exports: {}
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/******/ };
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/******/
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/******/ // Execute the module function
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/******/ __webpack_modules__[moduleId](module, module.exports, __webpack_require__);
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/******/
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/******/ // Return the exports of the module
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/******/ return module.exports;
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/******/ }
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/******/
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/******/ // expose the modules object (__webpack_modules__)
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/******/ __webpack_require__.m = __webpack_modules__;
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/******/
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/************************************************************************/
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/******/ /* webpack/runtime/define property getters */
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/******/ (() => {
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/******/ // define getter functions for harmony exports
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/******/ __webpack_require__.d = (exports, definition) => {
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/******/ for(var key in definition) {
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/******/ if(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {
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/******/ Object.defineProperty(exports, key, { enumerable: true, get: definition[key] });
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/******/ }
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/******/ }
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/******/ };
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/******/ })();
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/******/
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/******/ /* webpack/runtime/ensure chunk */
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/******/ (() => {
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/******/ __webpack_require__.f = {};
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/******/ // This file contains only the entry chunk.
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/******/ // The chunk loading function for additional chunks
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/******/ __webpack_require__.e = (chunkId) => {
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/******/ return Promise.all(Object.keys(__webpack_require__.f).reduce((promises, key) => {
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/******/ __webpack_require__.f[key](chunkId, promises);
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/******/ return promises;
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/******/ }, []));
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/******/ };
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/******/ })();
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/******/
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/******/ /* webpack/runtime/get javascript chunk filename */
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/******/ (() => {
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/******/ // This function allow to reference async chunks
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/******/ __webpack_require__.u = (chunkId) => {
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/******/ // return url for filenames based on template
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/******/ return "" + chunkId + ".output.js";
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/******/ };
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/******/ })();
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/******/
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/******/ /* webpack/runtime/hasOwnProperty shorthand */
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/******/ (() => {
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/******/ __webpack_require__.o = (obj, prop) => (Object.prototype.hasOwnProperty.call(obj, prop))
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/******/ })();
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/******/
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/******/ /* webpack/runtime/load script */
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/******/ (() => {
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/******/ var inProgress = {};
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/******/ // data-webpack is not used as build has no uniqueName
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/******/ // loadScript function to load a script via script tag
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/******/ __webpack_require__.l = (url, done, key, chunkId) => {
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/******/ if(inProgress[url]) { inProgress[url].push(done); return; }
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/******/ var script, needAttach;
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/******/ if(key !== undefined) {
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/******/ var scripts = document.getElementsByTagName("script");
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/******/ for(var i = 0; i < scripts.length; i++) {
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/******/ var s = scripts[i];
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/******/ if(s.getAttribute("src") == url) { script = s; break; }
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/******/ }
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/******/ }
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/******/ if(!script) {
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/******/ needAttach = true;
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/******/ script = document.createElement('script');
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/******/
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/******/ script.charset = 'utf-8';
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/******/ if (__webpack_require__.nc) {
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/******/ script.setAttribute("nonce", __webpack_require__.nc);
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/******/ }
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/******/
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/******/
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/******/ script.src = url;
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/******/ }
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/******/ inProgress[url] = [done];
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/******/ var onScriptComplete = (prev, event) => {
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/******/ // avoid mem leaks in IE.
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/******/ script.onerror = script.onload = null;
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/******/ clearTimeout(timeout);
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/******/ var doneFns = inProgress[url];
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/******/ delete inProgress[url];
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/******/ script.parentNode && script.parentNode.removeChild(script);
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/******/ doneFns && doneFns.forEach((fn) => (fn(event)));
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/******/ if(prev) return prev(event);
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/******/ }
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/******/ var timeout = setTimeout(onScriptComplete.bind(null, undefined, { type: 'timeout', target: script }), 120000);
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/******/ script.onerror = onScriptComplete.bind(null, script.onerror);
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/******/ script.onload = onScriptComplete.bind(null, script.onload);
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/******/ needAttach && document.head.appendChild(script);
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/******/ };
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/******/ })();
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/******/
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/******/ /* webpack/runtime/make namespace object */
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/******/ (() => {
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/******/ // define __esModule on exports
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/******/ __webpack_require__.r = (exports) => {
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/******/ if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
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/******/ Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
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/******/ }
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/******/ Object.defineProperty(exports, '__esModule', { value: true });
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/******/ };
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/******/ })();
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/******/
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/******/ /* webpack/runtime/publicPath */
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/******/ (() => {
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/******/ __webpack_require__.p = "dist/";
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/******/ })();
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/******/
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/******/ /* webpack/runtime/jsonp chunk loading */
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/******/ (() => {
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/******/ // no baseURI
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/******/
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/******/ // object to store loaded and loading chunks
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/******/ // undefined = chunk not loaded, null = chunk preloaded/prefetched
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/******/ // [resolve, reject, Promise] = chunk loading, 0 = chunk loaded
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/******/ var installedChunks = {
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/******/ 792: 0
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/******/ };
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/******/
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/******/ __webpack_require__.f.j = (chunkId, promises) => {
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/******/ // JSONP chunk loading for javascript
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/******/ var installedChunkData = __webpack_require__.o(installedChunks, chunkId) ? installedChunks[chunkId] : undefined;
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/******/ if(installedChunkData !== 0) { // 0 means "already installed".
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/******/
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/******/ // a Promise means "currently loading".
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/******/ if(installedChunkData) {
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/******/ promises.push(installedChunkData[2]);
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/******/ } else {
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/******/ if(true) { // all chunks have JS
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/******/ // setup Promise in chunk cache
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/******/ var promise = new Promise((resolve, reject) => (installedChunkData = installedChunks[chunkId] = [resolve, reject]));
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/******/ promises.push(installedChunkData[2] = promise);
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/******/
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/******/ // start chunk loading
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/******/ var url = __webpack_require__.p + __webpack_require__.u(chunkId);
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/******/ // create error before stack unwound to get useful stacktrace later
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/******/ var error = new Error();
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/******/ var loadingEnded = (event) => {
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/******/ if(__webpack_require__.o(installedChunks, chunkId)) {
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/******/ installedChunkData = installedChunks[chunkId];
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/******/ if(installedChunkData !== 0) installedChunks[chunkId] = undefined;
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/******/ if(installedChunkData) {
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/******/ var errorType = event && (event.type === 'load' ? 'missing' : event.type);
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/******/ var realSrc = event && event.target && event.target.src;
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/******/ error.message = 'Loading chunk ' + chunkId + ' failed.\n(' + errorType + ': ' + realSrc + ')';
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/******/ error.name = 'ChunkLoadError';
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/******/ error.type = errorType;
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/******/ error.request = realSrc;
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/******/ installedChunkData[1](error);
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/******/ }
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/******/ }
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/******/ };
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/******/ __webpack_require__.l(url, loadingEnded, "chunk-" + chunkId, chunkId);
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/******/ }
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/******/ }
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/******/ }
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/******/ };
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/******/
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/******/ // no prefetching
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/******/
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/******/ // no preloaded
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/******/
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/******/ // no HMR
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/******/
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/******/ // no HMR manifest
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/******/
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/******/ // no on chunks loaded
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/******/
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/******/ // install a JSONP callback for chunk loading
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/******/ var webpackJsonpCallback = (parentChunkLoadingFunction, data) => {
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/******/ var [chunkIds, moreModules, runtime] = data;
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/******/ // add "moreModules" to the modules object,
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/******/ // then flag all "chunkIds" as loaded and fire callback
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/******/ var moduleId, chunkId, i = 0;
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/******/ if(chunkIds.some((id) => (installedChunks[id] !== 0))) {
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/******/ for(moduleId in moreModules) {
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/******/ if(__webpack_require__.o(moreModules, moduleId)) {
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/******/ __webpack_require__.m[moduleId] = moreModules[moduleId];
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/******/ }
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/******/ }
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/******/ if(runtime) var result = runtime(__webpack_require__);
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/******/ }
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/******/ if(parentChunkLoadingFunction) parentChunkLoadingFunction(data);
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/******/ for(;i < chunkIds.length; i++) {
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/******/ chunkId = chunkIds[i];
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/******/ if(__webpack_require__.o(installedChunks, chunkId) && installedChunks[chunkId]) {
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/******/ installedChunks[chunkId][0]();
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/******/ }
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/******/ installedChunks[chunkId] = 0;
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/******/ }
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/******/
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/******/ }
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/******/
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/******/ var chunkLoadingGlobal = self["webpackChunk"] = self["webpackChunk"] || [];
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/******/ chunkLoadingGlobal.forEach(webpackJsonpCallback.bind(null, 0));
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/******/ chunkLoadingGlobal.push = webpackJsonpCallback.bind(null, chunkLoadingGlobal.push.bind(chunkLoadingGlobal));
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/******/ })();
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/******/
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/************************************************************************/
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```
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</details>
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``` js
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var __webpack_exports__ = {};
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// This entry needs to be wrapped in an IIFE because it needs to be isolated against other modules in the chunk.
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(() => {
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/*!********************!*\
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!*** ./example.js ***!
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\********************/
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/*! namespace exports */
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/*! exports [not provided] [no usage info] */
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/*! runtime requirements: __webpack_require__, __webpack_require__.r, __webpack_exports__, __webpack_require__.e, __webpack_require__.* */
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__webpack_require__.r(__webpack_exports__);
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/* harmony import */ var _increment__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./increment */ 1);
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var a = 1;
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(0,_increment__WEBPACK_IMPORTED_MODULE_0__.increment)(a); // 2
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// async loading
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__webpack_require__.e(/*! import() */ 655).then(__webpack_require__.bind(__webpack_require__, /*! ./async-loaded */ 3)).then(function(asyncLoaded) {
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console.log(asyncLoaded);
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});
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})();
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/******/ })()
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;
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```
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# Info
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## Unoptimized
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```
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asset output.js 11.7 KiB [emitted] (name: main)
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asset 655.output.js 773 bytes [emitted]
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chunk (runtime: main) 655.output.js 24 bytes [rendered]
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> ./async-loaded ./example.js 6:0-24
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./async-loaded.js 24 bytes [built] [code generated]
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[exports: answer]
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[used exports unknown]
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import() ./async-loaded ./example.js 6:0-24
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||
|
|
chunk (runtime: main) output.js (main) 400 bytes (javascript) 5.48 KiB (runtime) [entry] [rendered]
|
||
|
|
> ./example.js main
|
||
|
|
runtime modules 5.48 KiB 8 modules
|
||
|
|
dependent modules 225 bytes [dependent] 2 modules
|
||
|
|
./example.js 175 bytes [built] [code generated]
|
||
|
|
[no exports]
|
||
|
|
[used exports unknown]
|
||
|
|
entry ./example.js main
|
||
|
|
webpack X.X.X compiled successfully
|
||
|
|
```
|
||
|
|
|
||
|
|
## Production mode
|
||
|
|
|
||
|
|
```
|
||
|
|
asset output.js 2.01 KiB [emitted] [minimized] (name: main)
|
||
|
|
asset 655.output.js 124 bytes [emitted] [minimized]
|
||
|
|
chunk (runtime: main) 655.output.js 24 bytes [rendered]
|
||
|
|
> ./async-loaded ./example.js 6:0-24
|
||
|
|
./async-loaded.js 24 bytes [built] [code generated]
|
||
|
|
[exports: answer]
|
||
|
|
import() ./async-loaded ./example.js + 2 modules ./example.js 6:0-24
|
||
|
|
chunk (runtime: main) output.js (main) 400 bytes (javascript) 5.48 KiB (runtime) [entry] [rendered]
|
||
|
|
> ./example.js main
|
||
|
|
runtime modules 5.48 KiB 8 modules
|
||
|
|
./example.js + 2 modules 400 bytes [built] [code generated]
|
||
|
|
[no exports]
|
||
|
|
[no exports used]
|
||
|
|
entry ./example.js main
|
||
|
|
webpack X.X.X compiled successfully
|
||
|
|
```
|