Comparison

Feature	webpack/webpack	jrburke/requirejs	substack/node-browserify	jspm/jspm-cli	rollup/rollup
CommonJs require	yes	only wrapping in define	yes	yes	commonjs-plugin
CommonJs require.resolve	yes	no	no	no	no
CommonJs exports	yes	only wrapping in define	yes	yes	commonjs-plugin
AMD define	yes	yes	deamdify	yes	amd-plugin
AMD require	yes	yes	no	yes	no
AMD require loads on demand	yes	with manual configuration	no	yes	no
ES2015 import/export	yes(vr. 2)	no	no	yes	yes
Generate a single bundle	yes	yes♦	yes	yes	yes
Load each file separate	no	yes	no	yes	no
Multiple bundles	yes	with manual configuration	with manual configuration	yes	no
Additional chunks are loaded on demand	yes	yes	no	System.import	no
Multi pages build with common bundle	with manual configuration	yes	with manual configuration	with bundle arithmetic	no
Concat in require require("./fi" + "le")	yes	no♦	no	no	no
Indirect require var r = require; r("./file")	yes	no♦	no	no	no
Expressions in require (guided) require("./templates/" + template)	yes (all files matching included)	no♦	no	no	no
Expressions in require (free) require(moduleName)	with manual configuration	no♦	no	no	no
Requirable files	file system	web	file system	through plugins	file system or through plugins
Plugins	yes	yes	yes	yes	yes
Preprocessing	loaders, transforms	loaders	transforms	plugin translate	plugin transforms
Watch mode	yes	not required	yes	not needed in dev	no
Debugging support	SourceUrl, SourceMaps	not required	SourceMaps	SourceUrl, SourceMaps	SourceUrl, SourceMaps
Node.js built-in libs require("path")	yes	no	yes	yes	node-resolve-plugin
Other Node.js stuff	process, __dir/filename, global	-	process, __dir/filename, global	process, __dir/filename, global for cjs	global (commonjs-plugin)
Replacement for browser	web_modules, .web.js, package.json field, alias config option	alias option	package.json field, alias option	package.json, alias option	no
Minimizing	uglify	uglify, closure compiler	uglifyify	yes	uglify-plugin
Mangle path names	yes	no	partial	yes	not required (path names are not included in the bundle)
Runtime overhead	243B + 20B per module + 4B per dependency	14.7kB + 0B per module + (3B + X) per dependency	415B + 25B per module + (6B + 2X) per dependency	5.5kB for self-executing bundles, 38kB for full loader and polyfill, 0 plain modules, 293B CJS, 139B ES6 System.register before gzip	none for ES2015 modules (other formats may have)
Install size (including dependencies)	9.7MB / 129 packages	11MB / 118 packages	9.1MB / 119 packages	26MB / 131 packages	?MB / 3 packages

♦ in production mode (opposite in development mode)

X is the length of the path string