example.js

var a = require("a");
var b = require("b");
require.ensure(["c"], function(require) {
    require("b").xyz();
    var d = require("d");
});

js/output.js

/******/(function(document, undefined) {
/******/	return function(modules) {
/******/		var installedModules = {}, installedChunks = {0:1};
/******/		function require(moduleId) {
/******/			if(typeof moduleId !== "number") throw new Error("Cannot find module '"+moduleId+"'");
/******/			if(installedModules[moduleId])
/******/				return installedModules[moduleId].exports;
/******/			var module = installedModules[moduleId] = {
/******/				exports: {},
/******/				id: moduleId,
/******/				loaded: false
/******/			};
/******/			modules[moduleId](module, module.exports, require);
/******/			module.loaded = true;
/******/			return module.exports;
/******/		}
/******/		require.e = function(chunkId, callback) {
/******/			if(installedChunks[chunkId] === 1) return callback(require);
/******/			if(installedChunks[chunkId] !== undefined)
/******/				installedChunks[chunkId].push(callback);
/******/			else {
/******/				installedChunks[chunkId] = [callback];
/******/				var head = document.getElementsByTagName('head')[0];
/******/				var script = document.createElement('script');
/******/				script.type = 'text/javascript';
/******/				script.charset = 'utf-8';
/******/				script.src = modules.c+chunkId+modules.a;
/******/				head.appendChild(script);
/******/			}
/******/		};
/******/		require.modules = modules;
/******/		require.cache = installedModules;
/******/		window[modules.b] = function(chunkId, moreModules) {
/******/			for(var moduleId in moreModules)
/******/				modules[moduleId] = moreModules[moduleId];
/******/			var callbacks = installedChunks[chunkId];
/******/			installedChunks[chunkId] = 1;
/******/			for(var i = 0; i < callbacks.length; i++)
/******/				callbacks[i](require);
/******/		};
/******/		return require(0);
/******/	}
/******/})(document)
/******/({a:".output.js",b:"webpackJsonp",c:"",
/******/0: function(module, exports, require) {

/**! .\example.js !**/

var a = require(/*! a */2);
var b = require(/*! b */1);
require.e(1, function(require) {
    require(/*! b */1).xyz();
    var d = require(/*! d */4);
});

/******/},
/******/
/******/1: function(module, exports, require) {

/**! .\~\b.js !**/

// module b

/******/},
/******/
/******/2: function(module, exports, require) {

/**! .\~\a.js !**/

// module a

/******/}
/******/})

js/1.output.js

/******/webpackJsonp(1,{
/******/3: function(module, exports, require) {

/**! .\~\c.js !**/

// module c

/******/},
/******/
/******/4: function(module, exports, require) {

/**! .\~\d.js !**/

// module d

/******/}
/******/})

Minimized

webpackJsonp(1,{3:function(){},4:function(){}});

Info

Uncompressed

Hash: f9f9457a3d5544cebb5ce4117187a471
Compile Time: 47ms
Chunks: 2
Modules: 5
Modules including duplicates: 5
Modules first chunk: 3
main     output.js:     2286 chars/bytes
       1.output.js:      229 chars/bytes

 <id>    <size>  <filename>
       <reason> from <filename>
output.js
    0       154  .\example.js
       main
    1        11  .\~\b.js
       require (2x) from .\example.js
    2        11  .\~\a.js
       require (1x) from .\example.js
1.output.js
    3        11  .\~\c.js
       async require (1x) from .\example.js
    4        11  .\~\d.js
       async require (1x) from .\example.js

Minimized (uglify-js, no zip)

Hash: b4b348db91689f6fb88a039e9d987a96
Compile Time: 203ms
Chunks: 2
Modules: 5
Modules including duplicates: 5
Modules first chunk: 3
main     output.js:      759 chars/bytes
       1.output.js:       48 chars/bytes

 <id>    <size>  <filename>
       <reason> from <filename>
output.js
    0        72  .\example.js
       main
    1         0  .\~\b.js
       require (2x) from .\example.js
    2         0  .\~\a.js
       require (1x) from .\example.js
1.output.js
    3         0  .\~\c.js
       async require (1x) from .\example.js
    4         0  .\~\d.js
       async require (1x) from .\example.js

Graph