webpack 4.x 最小压缩代码

codepen

(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, {
        enumerable: true,
        get: getter
      });
    }
  };
  // define __esModule on exports
  __webpack_require__.r = function(exports) {
    if (typeof Symbol !== 'undefined' && Symbol.toStringTag) {
      Object.defineProperty(exports, Symbol.toStringTag, {
        value: 'Module'
      });
    }
    Object.defineProperty(exports, '__esModule', {
      value: true
    });
  };
  // create a fake namespace object
  /******/
  // mode & 1: value is a module id, require it
  /******/
  // mode & 2: merge all properties of value into the ns
  /******/
  // mode & 4: return value when already ns object
  /******/
  // mode & 8|1: behave like require
  __webpack_require__.t = function(value, mode) {
    if (mode & 1) value = __webpack_require__(value);
    if (mode & 8) return value;
    if ((mode & 4) && typeof value === 'object' && value && value.__esModule) return value;
    var ns = Object.create(null);
    __webpack_require__.r(ns);
    Object.defineProperty(ns, 'default', {
      enumerable: true,
      value: value
    });
    if (mode & 2 && typeof value != 'string') for (var key in value) __webpack_require__.d(ns, key,
    function(key) {
      return value[key];
    }.bind(null, key));
    return ns;
  };
  // 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 = "/";

  // Load entry module and return exports
  return __webpack_require__(__webpack_require__.s = "wNqJ");
})
({
  "wNqJ":
  (function(module, exports) {

    var add = function add() {
      console.log('add');
    };

    add();
  })
});
参考:
webpack模块化实现探究 https://juejin.im/post/5a5ef47c6fb9a01cb13929f5
renmm / blogs

webpack 4.x 最小压缩代码 #13
