比较

Feature	webpack/webpack	jrburke/requirejs	substack/node-browserify	jspm/jspm-cli
CommonJs require	yes	only wrapping in define	yes	yes
CommonJs require.resolve	yes	no	no	no
CommonJs exports	yes	only wrapping in define	yes	yes
AMD define	yes	yes	deamdify	yes
AMD require	yes	yes	no	yes
AMD require loads on demand	yes	with manual configuration	no	yes
generate a single bundle	yes	yes♦	yes	yes
load each file separate	no	yes	no	yes
multiple bundles	yes	with manual configuration	with manual configuration	yes
additional chunks are loaded on demand	yes	yes	no	System.import
multi pages build with common bundle	with manual configuration	yes	with manual configuration	with bundle arithmetic
concat in require require("./fi" + "le")	yes	no♦	no	no
indirect require var r = require; r("./file")	yes	no♦	no	no
expressions in require (guided) require("./templates/" + template)	yes (all files matching included)	no♦	no	no
expressions in require (free) require(moduleName)	with manual configuration	no♦	no	no
requirable files	file system	web	file system	through plugins
plugins	yes	yes	yes	yes
preprocessing	loaders, transforms	loaders	transforms	plugin translate
watch mode	yes	not required	yes	not needed in dev
debugging support	SourceUrl, SourceMaps	not required	SourceMaps	SourceUrl, SourceMaps
node.js built-in libs require("path")	yes	no	yes	yes
other node.js stuff	process, __dir/filename, global	-	process, __dir/filename, global	process, __dir/filename, global for cjs
replacement for browser	web_modules, .web.js, package.json field, alias config option	alias option	package.json field, alias option	package.json, alias option
minimizing	uglify	uglify, closure compiler	uglifyify	yes
mangle path names	yes	no	partial	yes
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

♦ in production mode (opposite in development mode)

X is the length of the path string