This is the vendor build part.

It's built separately from the app part. The vendors dll is only built when the array of vendors has changed and not during the normal development cycle.

The DllPlugin in combination with the `output.library` option exposes the internal require function as global variable in the target environment.

A manifest is created which includes mappings from module names to internal ids.

### webpack.config.js

```javascript
var path = require("path");
var webpack = require("../../../");

module.exports = {
	// mode: "development || "production",
	context: __dirname,
	entry: ["example-vendor"],
	output: {
		filename: "vendor.js", // best use [hash] here too
		path: path.resolve(__dirname, "dist"),
		library: "vendor_lib_[hash]"
	},
	plugins: [
		new webpack.DllPlugin({
			name: "vendor_lib_[hash]",
			path: path.resolve(__dirname, "dist/vendor-manifest.json")
		})
	]
};
```

# example-vendor

```javascript
export function square(n) {
	return n * n;
}
```

# dist/vendor.js

```javascript
var vendor_lib_a132d30959ef28c3f004 =
```
<details><summary><code>/******/ (function(modules) { /* webpackBootstrap */ })</code></summary>

``` js
/******/ (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 = "dist/";
/******/
/******/
/******/ 	// Load entry module and return exports
/******/ 	return __webpack_require__(__webpack_require__.s = 0);
/******/ })
/************************************************************************/
```

</details>

``` js
/******/ ([
/* 0 */
/*!****************!*\
  !*** dll main ***!
  \****************/
/*! no static exports found */
/*! all exports used */
/***/ (function(module, exports, __webpack_require__) {

module.exports = __webpack_require__;

/***/ }),
/* 1 */
/*!*****************************************!*\
  !*** ../node_modules/example-vendor.js ***!
  \*****************************************/
/*! exports provided: square */
/*! all exports used */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "square", function() { return square; });
function square(n) {
	return n * n;
}


/***/ })
/******/ ]);
```

# dist/vendor-manifest.json

```javascript
{"name":"vendor_lib_a132d30959ef28c3f004","content":{"../node_modules/example-vendor.js":{"id":1,"buildMeta":{"exportsType":"namespace","providedExports":["square"]}}}}
```

# Info

## Unoptimized

```
Hash: 0a1b2c3d4e5f6a7b8c9d
Version: webpack 4.39.0
    Asset      Size  Chunks             Chunk Names
vendor.js  4.28 KiB       0  [emitted]  main
Entrypoint main = vendor.js
chunk    {0} vendor.js (main) 57 bytes [entry] [rendered]
    > main
 [0] dll main 12 bytes {0} [built]
     dll entry 
      DllPlugin
     + 1 hidden module
```

## Production mode

```
Hash: 0a1b2c3d4e5f6a7b8c9d
Version: webpack 4.39.0
    Asset      Size  Chunks             Chunk Names
vendor.js  1.06 KiB       0  [emitted]  main
Entrypoint main = vendor.js
chunk    {0} vendor.js (main) 57 bytes [entry] [rendered]
    > main
 [0] dll main 12 bytes {0} [built]
     dll entry 
      DllPlugin
     + 1 hidden module
```
