# example.js ``` javascript var a = require("./a"); // get module id var aId = require.resolve("./a.js"); // clear module in require.cache delete require.cache[aId]; // require module again, it should be reexecuted var a2 = require("./a"); // vertify it if(a == a2) throw new Error("Cache clear failed :("); ``` # a.js ``` javascript module.exports = Math.random(); ``` # dist/output.js
/******/ (function(modules) { /* webpackBootstrap */ }) ``` javascript /******/ (function(modules) { // webpackBootstrap /******/ // The module cache /******/ var installedModules = {}; /******/ /******/ // 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; /******/ } /******/ /******/ /******/ // 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/"; /******/ /******/ /******/ // Load entry module and return exports /******/ return __webpack_require__(__webpack_require__.s = 0); /******/ }) /************************************************************************/ ```
``` javascript /******/ ([ /* 0 */ /*!********************!*\ !*** ./example.js ***! \********************/ /*! no static exports found */ /***/ (function(module, exports, __webpack_require__) { var a = __webpack_require__(/*! ./a */ 1); // get module id var aId = /*require.resolve*/(/*! ./a.js */ 1); // clear module in require.cache delete __webpack_require__.c[aId]; // require module again, it should be reexecuted var a2 = __webpack_require__(/*! ./a */ 1); // vertify it if(a == a2) throw new Error("Cache clear failed :("); /***/ }), /* 1 */ /*!**************!*\ !*** ./a.js ***! \**************/ /*! no static exports found */ /***/ (function(module, exports) { module.exports = Math.random(); /***/ }) /******/ ]); ``` # Info ## Unoptimized ``` Hash: 0a1b2c3d4e5f6a7b8c9d Version: webpack next Asset Size Chunks Chunk Names output.js 3.26 KiB 0 [emitted] main Entrypoint main = output.js chunk {0} output.js (main) 326 bytes [entry] [rendered] > .\example.js main [0] ./example.js 295 bytes {0} [built] single entry .\example.js main [1] ./a.js 31 bytes {0} [built] require.resolve ./a.js [0] ./example.js 4:10-35 cjs require ./a [0] ./example.js 1:8-22 cjs require ./a [0] ./example.js 10:9-23 ``` ## Production mode ``` Hash: 0a1b2c3d4e5f6a7b8c9d Version: webpack next Asset Size Chunks Chunk Names output.js 667 bytes 0 [emitted] main Entrypoint main = output.js chunk {0} output.js (main) 326 bytes [entry] [rendered] > .\example.js main [0] ./a.js 31 bytes {0} [built] require.resolve ./a.js [1] ./example.js 4:10-35 cjs require ./a [1] ./example.js 1:8-22 cjs require ./a [1] ./example.js 10:9-23 [1] ./example.js 295 bytes {0} [built] single entry .\example.js main ```