2 thoughts on “avoid boilerplate load code for single-bundle files

  1. We have this listed in our 2.4 milestone. Milestone we are on right now is 2.3. We have more PR’s to land in master for perf, refactor, and then we start 2.4 which will contain our first feature from the voting list. 2.3 was added to ensure that we are not leaving behind any issues from dropping 2.2.

  2. Wondering if this is still in the works? I know that scope hoisting is now done, but it seems like single-bundle files still contain a fair amount of unnecessary boilerplate. For example, an entrypoint containing the one-liner document.body.focus() produces this output (without -p):

    /******/ (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
    /******/ 			});
    /******/ 		}
    /******/ 	};
    /******/
    /******/ 	// 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 = 0);
    /******/ })
    /************************************************************************/
    /******/ ([
    /* 0 */
    /***/ (function(module, exports) {
    
    document.body.focus();
    
    
    /***/ })
    /******/ ]);
    

    and with -p:

    !function(n){function t(r){if(e[r])return e[r].exports;var o=e[r]={i:r,l:!1,exports:{}};return n[r].call(o.exports,o,o.exports,t),o.l=!0,o.exports}var e={};t.m=n,t.c=e,t.d=function(n,e,r){t.o(n,e)||Object.defineProperty(n,e,{configurable:!1,enumerable:!0,get:r})},t.n=function(n){var e=n&&n.__esModule?function(){return n.default}:function(){return n};return t.d(e,"a",e),e},t.o=function(n,t){return Object.prototype.hasOwnProperty.call(n,t)},t.p="",t(t.s=0)}([function(n,t){document.body.focus()}]);
    

    As you can see, in both cases there seems to be additional code in the output bundle relating to ES modules and exports.

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