jspm extends package.json and supports loading modules from npm, directly from GitHub or from a browser global variable. Plugins are available that really make it extendable to any module system.
You use the familiar `require()` syntax but with prefixes such as “npm:” and “github:”. In the module itself, you can use various methods of exports, including ES6 `export` syntax. ES6 `import` is also supported via transpiling.
var collections = require('npm:lodash-node/modern/collections');
var $ = require('github:components/jquery');
Read more at jspm.io