339 lines
11 KiB
Markdown
339 lines
11 KiB
Markdown
# example.js
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```javascript
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// harmony module
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// import from CommonJs module
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import fs from "./fs";
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import { readFile } from "./fs";
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import * as fs2 from "./fs";
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fs.readFile("file");
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readFile("file");
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fs2.readFile("file");
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// import from harmony module
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import { readFile as readFile2 } from "./reexport-commonjs";
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readFile2("file");
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// import a CommonJs module for sideeffects
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import "./example2";
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```
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# fs.js
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```javascript
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// an example CommonJs module
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// content is omitted for brevity
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exports.readFile = function() {};
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// using module.exports would be equivalent,
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// webpack doesn't care which syntax is used
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// AMD modules are also possible and equivalent to CommonJs modules
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```
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# reexport-commonjs.js
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```javascript
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// reexport a CommonJs module
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export * from "./fs";
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// Note that the default export doesn't reexport via export *
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// (this is not interop-specific, it applies for every export *)
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// Note: reexporting a CommonJs module is a special case,
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// because in this module we have no information about exports
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```
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# example2.js
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```javascript
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// CommonJs module
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// require a harmony module
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var module = require("./harmony");
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var defaultExport = module.default;
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var namedExport = module.named;
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```
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# harmony.js
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```javascript
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// just some exports
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export default "default";
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export var named = "named";
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```
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# dist/output.js
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<details><summary><code>/******/ (function(modules) { /* webpackBootstrap */ })</code></summary>
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```javascript
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/******/ (function(modules) { // webpackBootstrap
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/******/ // The module cache
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/******/ var installedModules = {};
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/******/
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/******/ // The require function
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/******/ function __webpack_require__(moduleId) {
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/******/
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/******/ // Check if module is in cache
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/******/ if(installedModules[moduleId]) {
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/******/ return installedModules[moduleId].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 = installedModules[moduleId] = {
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/******/ i: moduleId,
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/******/ l: false,
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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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/******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
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/******/
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/******/ // Flag the module as loaded
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/******/ module.l = true;
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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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/******/
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/******/ // expose the modules object (__webpack_modules__)
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/******/ __webpack_require__.m = modules;
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/******/
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/******/ // expose the module cache
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/******/ __webpack_require__.c = installedModules;
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/******/
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/******/ // define getter function for harmony exports
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/******/ __webpack_require__.d = function(exports, name, getter) {
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/******/ if(!__webpack_require__.o(exports, name)) {
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/******/ Object.defineProperty(exports, name, { enumerable: true, get: getter });
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/******/ }
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/******/ };
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/******/
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/******/ // define __esModule on exports
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/******/ __webpack_require__.r = function(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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/******/ // create a fake namespace object
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/******/ // mode & 1: value is a module id, require it
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/******/ // mode & 2: merge all properties of value into the ns
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/******/ // mode & 4: return value when already ns object
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/******/ // mode & 8|1: behave like require
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/******/ __webpack_require__.t = function(value, mode) {
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/******/ if(mode & 1) value = __webpack_require__(value);
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/******/ if(mode & 8) return value;
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/******/ if((mode & 4) && typeof value === 'object' && value && value.__esModule) return value;
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/******/ var ns = Object.create(null);
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/******/ __webpack_require__.r(ns);
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/******/ Object.defineProperty(ns, 'default', { enumerable: true, value: value });
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/******/ if(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));
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/******/ return ns;
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/******/ };
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/******/
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/******/ // getDefaultExport function for compatibility with non-harmony modules
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/******/ __webpack_require__.n = function(module) {
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/******/ var getter = module && module.__esModule ?
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/******/ function getDefault() { return module['default']; } :
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/******/ function getModuleExports() { return module; };
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/******/ __webpack_require__.d(getter, 'a', getter);
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/******/ return getter;
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/******/ };
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/******/
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/******/ // Object.prototype.hasOwnProperty.call
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/******/ __webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
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/******/
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/******/ // __webpack_public_path__
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/******/ __webpack_require__.p = "dist/";
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/******/
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/******/
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/******/ // Load entry module and return exports
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/******/ return __webpack_require__(__webpack_require__.s = 0);
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/******/ })
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/************************************************************************/
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```
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</details>
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```javascript
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/******/ ([
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/* 0 */
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/*!********************!*\
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!*** ./example.js ***!
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\********************/
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/*! no exports provided */
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/***/ (function(module, __webpack_exports__, __webpack_require__) {
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"use strict";
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__webpack_require__.r(__webpack_exports__);
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/* harmony import */ var _fs__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./fs */ 1);
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/* harmony import */ var _fs__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(_fs__WEBPACK_IMPORTED_MODULE_0__);
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/* harmony import */ var _reexport_commonjs__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./reexport-commonjs */ 2);
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/* harmony import */ var _example2__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./example2 */ 3);
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/* harmony import */ var _example2__WEBPACK_IMPORTED_MODULE_2___default = /*#__PURE__*/__webpack_require__.n(_example2__WEBPACK_IMPORTED_MODULE_2__);
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// harmony module
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// import from CommonJs module
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_fs__WEBPACK_IMPORTED_MODULE_0___default.a.readFile("file");
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Object(_fs__WEBPACK_IMPORTED_MODULE_0__["readFile"])("file");
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_fs__WEBPACK_IMPORTED_MODULE_0__["readFile"]("file");
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// import from harmony module
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Object(_reexport_commonjs__WEBPACK_IMPORTED_MODULE_1__["readFile"])("file");
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// import a CommonJs module for sideeffects
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/***/ }),
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/* 1 */
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/*!***************!*\
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!*** ./fs.js ***!
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\***************/
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/*! no static exports found */
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/***/ (function(module, exports) {
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// an example CommonJs module
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// content is omitted for brevity
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exports.readFile = function() {};
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// using module.exports would be equivalent,
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// webpack doesn't care which syntax is used
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// AMD modules are also possible and equivalent to CommonJs modules
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/***/ }),
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/* 2 */
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/*!******************************!*\
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!*** ./reexport-commonjs.js ***!
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\******************************/
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/*! no static exports found */
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/***/ (function(module, __webpack_exports__, __webpack_require__) {
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"use strict";
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__webpack_require__.r(__webpack_exports__);
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/* harmony import */ var _fs__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./fs */ 1);
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/* harmony import */ var _fs__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(_fs__WEBPACK_IMPORTED_MODULE_0__);
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/* harmony reexport (unknown) */ for(var __WEBPACK_IMPORT_KEY__ in _fs__WEBPACK_IMPORTED_MODULE_0__) if(__WEBPACK_IMPORT_KEY__ !== 'default') (function(key) { __webpack_require__.d(__webpack_exports__, key, function() { return _fs__WEBPACK_IMPORTED_MODULE_0__[key]; }) }(__WEBPACK_IMPORT_KEY__));
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// reexport a CommonJs module
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// Note that the default export doesn't reexport via export *
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// (this is not interop-specific, it applies for every export *)
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// Note: reexporting a CommonJs module is a special case,
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// because in this module we have no information about exports
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/***/ }),
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/* 3 */
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/*!*********************!*\
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!*** ./example2.js ***!
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\*********************/
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/*! no static exports found */
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/***/ (function(module, exports, __webpack_require__) {
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// CommonJs module
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// require a harmony module
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var module = __webpack_require__(/*! ./harmony */ 4);
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var defaultExport = module.default;
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var namedExport = module.named;
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/***/ }),
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/* 4 */
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/*!********************!*\
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!*** ./harmony.js ***!
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\********************/
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/*! exports provided: default, named */
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/***/ (function(module, __webpack_exports__, __webpack_require__) {
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"use strict";
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__webpack_require__.r(__webpack_exports__);
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/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "named", function() { return named; });
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// just some exports
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/* harmony default export */ __webpack_exports__["default"] = ("default");
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var named = "named";
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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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Hash: 0a1b2c3d4e5f6a7b8c9d
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Version: webpack 4.29.6
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Asset Size Chunks Chunk Names
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output.js 7.05 KiB 0 [emitted] main
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Entrypoint main = output.js
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chunk {0} output.js (main) 1.13 KiB [entry] [rendered]
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> ./example.js main
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[0] ./example.js 373 bytes {0} [built]
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[no exports]
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single entry ./example.js main
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[1] ./fs.js 257 bytes {0} [built]
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harmony side effect evaluation ./fs [0] ./example.js 4:0-22
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harmony side effect evaluation ./fs [0] ./example.js 5:0-32
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harmony side effect evaluation ./fs [0] ./example.js 6:0-28
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harmony import specifier ./fs [0] ./example.js 7:0-2
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harmony import specifier ./fs [0] ./example.js 8:0-8
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harmony import specifier ./fs [0] ./example.js 9:0-12
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harmony side effect evaluation ./fs [2] ./reexport-commonjs.js 2:0-21
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harmony export imported specifier ./fs [2] ./reexport-commonjs.js 2:0-21
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[2] ./reexport-commonjs.js 301 bytes {0} [built]
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harmony side effect evaluation ./reexport-commonjs [0] ./example.js 12:0-60
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harmony import specifier ./reexport-commonjs [0] ./example.js 13:0-9
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[3] ./example2.js 152 bytes {0} [built]
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harmony side effect evaluation ./example2 [0] ./example.js 16:0-20
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[4] ./harmony.js 75 bytes {0} [built]
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[exports: default, named]
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cjs require ./harmony [3] ./example2.js 4:13-33
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```
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## Production mode
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```
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Hash: 0a1b2c3d4e5f6a7b8c9d
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Version: webpack 4.29.6
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Asset Size Chunks Chunk Names
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output.js 1.35 KiB 0 [emitted] main
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Entrypoint main = output.js
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chunk {0} output.js (main) 1.13 KiB [entry] [rendered]
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> ./example.js main
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[0] ./fs.js 257 bytes {0} [built]
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[only some exports used: default, readFile]
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harmony side effect evaluation ./fs [1] ./reexport-commonjs.js 2:0-21
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harmony export imported specifier ./fs [1] ./reexport-commonjs.js 2:0-21
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harmony side effect evaluation ./fs [2] ./example.js 4:0-22
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harmony side effect evaluation ./fs [2] ./example.js 5:0-32
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harmony side effect evaluation ./fs [2] ./example.js 6:0-28
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harmony import specifier ./fs [2] ./example.js 7:0-2
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harmony import specifier ./fs [2] ./example.js 8:0-8
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harmony import specifier ./fs [2] ./example.js 9:0-12
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[1] ./reexport-commonjs.js 301 bytes {0} [built]
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[only some exports used: readFile]
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harmony side effect evaluation ./reexport-commonjs [2] ./example.js 12:0-60
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harmony import specifier ./reexport-commonjs [2] ./example.js 13:0-9
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[2] ./example.js 373 bytes {0} [built]
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[no exports]
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single entry ./example.js main
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[3] ./example2.js 152 bytes {0} [built]
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[no exports used]
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harmony side effect evaluation ./example2 [2] ./example.js 16:0-20
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[4] ./harmony.js 75 bytes {0} [built]
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[exports: default, named]
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cjs require ./harmony [3] ./example2.js 4:13-33
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```
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